JP7069987B2 - Coke oven extrusion load analyzer, coke oven management support system, coke oven extrusion load analysis method, computer program and computer-readable recording medium on which the program is recorded. - Google Patents

Description

The present invention is a coke oven extrusion load analyzer that analyzes information to support the management of the kiln state of the coke oven, a coke oven management support system, a coke oven extrusion load analysis method, a computer program, and a computer that records the program. Regarding readable recording media.

In the maintenance of the coke oven body, the inside of the furnace is inspected using a carbonization chamber diagnosis and repair device, a kiln width measuring device, etc. according to a maintenance schedule created in advance. Further, when the coke is extruded, the force exerted by the extruder on the entire coke cake is measured as an extrusion load for each spatial position where the ram of the extruder has advanced from the start of extrusion or for each elapsed time. In the following, it is assumed that the extrusion load is measured for each spatial position where the ram of the extruder has advanced from the start of extrusion. If an abnormality occurs in the waveform of the extrusion load obtained from the extrusion load at each spatial position in one extrusion, it is possible that the kiln has abnormalities such as unevenness of the furnace wall, rough skin, and narrowing of the kiln opening. There is sex. Therefore, if an abnormal extrusion load occurs during coke extrusion, an exceptionally unplanned in-core inspection or maintenance is additionally performed. Conventionally, the determination of whether or not to carry out an unscheduled in-furnace inspection or maintenance has been made by paying attention to the maximum value of the extrusion load in the range of, for example, about 3 cycles.

Specifically, it predicts the maximum value of the extrusion load when extruding coke, determines that clogging has occurred when the predicted maximum value of the extrusion load exceeds a preset threshold value, and prompts countermeasure action. A method has been proposed. For example, Patent Document 1 discloses a method of estimating an extrusion load required for extruding coke from a carbonization chamber based on a linear regression estimation formula for each kiln. Further, Patent Document 2 discloses a method of calculating the probability that coke is clogged when coke is extruded from a carbonization chamber by using a linear regression estimation formula for each kiln.

Japanese Unexamined Patent Publication No. 2012-46679 Japanese Unexamined Patent Publication No. 2012-62363

Kenji Yamanishi, "Abnormality Detection by Data Mining" Kyoritsu Shuppan, May 2009 Takeshi Ide, Masashi Sugiyama, "Abnormality Detection and Change Detection" Kodansha, August 7, 2015

However, in the above Patent Documents 1 and 2, since the occurrence of clogging is predicted only based on the maximum value of the extrusion load, the kiln abnormality such as unevenness of the furnace wall, rough skin, and narrowing of the kiln opening is actually overlooked. It can cause clogging or puncture. Further, although it is possible to find an abnormality in the kiln by a known furnace wall profile measurement method, it is necessary to interrupt the processing of the target kiln in the furnace wall profile measurement, so that the productivity is lowered if the kiln is used frequently. For this reason, there is a desire to find out abnormalities in the kiln without performing furnace wall profile measurement as much as possible.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to detect an abnormality in a kiln that may be overlooked by monitoring only the maximum value of the extrusion load at an early stage and produce the product. Record new and improved coke oven extrusion load analyzers, coke oven management support systems, coke oven extrusion load analysis methods, computer programs and programs that can support kiln management work without compromising performance. The purpose is to provide a computer-readable recording medium.

In order to solve the above problems, according to a certain aspect of the present invention, a plurality of extrusion data including the extrusion load at each extrusion position of the coke by the extrusion ram obtained when the coke is extruded from the kiln of the coke oven are used. The coke oven is provided with a data processing unit that generates an extrusion load change map that represents a temporal change in the extrusion load at each extrusion position, and a display control unit that displays the extrusion load change map on a display device. An analyzer is provided.

The extrusion load analyzer of the coke oven is a display processing unit that displays the peak position indicating the extrusion position when the extrusion load is maximized for each extrusion of coke on the extrusion load change map generated by the data processing unit. The display control unit may display the extrusion load change map processed by the display processing unit on the display device .

Further, the extrusion load analyzer of the coke oven is a display processing unit that normalizes the value of the extrusion load of the extrusion load change map generated by the data processing unit by dividing it by the maximum value of the extrusion load for each extrusion of coke. The display control unit may display the extrusion load change map processed by the display processing unit on the display device .

The data processing unit calculates the surface ratio extrusion load, which is the value obtained by dividing the extrusion load at each extrusion position by the contact area between the coke cake and the furnace wall surface, and represents the temporal change in the surface ratio extrusion load at each extrusion position. A rate extrusion load change map may be generated as an extrusion load change map.

It also has an analysis target selection unit that selects the analysis target kiln that detects abnormalities in the kiln, and the analysis target selection unit has a surface ratio extrusion load for each coke extrusion based on the surface ratio extrusion load calculated by the data processing unit. In the tendency chart in which the representative values of are calculated and the representative values are arranged in chronological order, the kiln to be analyzed is analyzed when the number of times the representative value exceeds the threshold value exceeds the judgment value within the latest predetermined period. May be selected for .

The analysis target selection unit further calculates the degree of change in the representative value of the surface ratio extrusion load, and in the tendency chart in which the degree of change is arranged in chronological order, the number of times the degree of change exceeds the threshold value within the most recent predetermined period. If the judgment value is exceeded, the kiln may be selected as the kiln to be analyzed .

The representative value of the surface ratio extrusion load may be either a cumulative value, an average value, a maximum value or a peak value of the surface ratio extrusion load.

The extrusion load analyzer further includes a management processing unit that detects an abnormality in the analysis target kiln selected by the analysis target selection unit based on the surface ratio extrusion load change map, and the display control unit has an abnormality due to the management processing unit. The detected kiln to be analyzed may be notified as a kiln to be inspected or maintained with priority .

Further, in order to solve the above problems, according to another viewpoint of the present invention, it is a coke oven management support system that supports the management of the coke oven kiln, and analyzes the extrusion load applied to the coke oven when the coke is extruded. The extrusion load analyzer is provided with an extrusion load analyzer that detects abnormalities in the kiln and a display device that displays the analysis results of the extrusion load analyzer, and the extrusion load analyzer is an extrusion ram acquired when coke is extruded from the kiln. A data processing unit that generates an extrusion load change map showing the temporal change of the extrusion load at each extrusion position using a plurality of extrusion data including the extrusion load at each extrusion position of coke, and a display device for displaying the extrusion load change map. A coke oven management support system having a display control unit and a display control unit for displaying on the coke oven is provided.

Further, in order to solve the above problems, according to another aspect of the present invention, the extrusion data including the extrusion load at each extrusion position of the coke by the extrusion ram obtained when the coke is extruded from the kiln of the coke oven. A coke oven including a data processing step for generating an extrusion load change map representing a temporal change in the extrusion load at each extrusion position and a display control step for displaying the extrusion load change map on a display device. Extrusion load analysis method is provided.

Further, in order to solve the above-mentioned problems, according to another aspect of the present invention, the extrusion load at each extrusion position of the coke by the extrusion ram acquired when the computer extrudes the coke from the kiln of the coke oven is applied. It is provided with a data processing unit that generates an extrusion load change map showing a temporal change of the extrusion load at each extrusion position using a plurality of including extrusion data, and a display control unit that displays the extrusion load change map on a display device. , A computer program is provided that acts as an extrusion load analyzer for a coke oven.

Further, in order to solve the above-mentioned problems, according to another aspect of the present invention, the computer is subjected to the extrusion load at each extrusion position of the coke by the extrusion ram, which is acquired when the coke is extruded from the kiln of the coke oven. It is provided with a data processing unit that generates an extrusion load change map showing a temporal change of the extrusion load at each extrusion position using a plurality of including extrusion data, and a display control unit that displays the extrusion load change map on a display device. , A computer-readable recording medium containing a program that acts as an extrusion load analyzer for a coke oven is provided.

As described above, according to the present invention, it is possible to detect an abnormality of the kiln that may be overlooked by monitoring only the maximum value of the extrusion load at an early stage and support the kiln management work without lowering the productivity. Will be.

It is explanatory drawing which shows the change by the state of the kiln about the waveform of the extrusion load which shows the relationship between the extrusion position and the extrusion load at the time of extruding coke. It is explanatory drawing explaining the influence of the extrusion load which the furnace body receives per unit area by shrinkage of a coke cake. It is a block diagram which shows the structure of the coke oven management support system which concerns on one Embodiment of this invention. It is a flowchart which shows an example of the extrusion load analysis process which concerns on the same embodiment, and shows the case of presenting the extrusion load change map. It is explanatory drawing which shows an example of the extrusion load change map. It is explanatory drawing which shows the example which displayed the peak position of the extrusion load at the time of each coke extrusion on the extrusion load change map. It is explanatory drawing which shows an example of the extrusion load change map which normalized the extrusion load. It is a flowchart which shows the other example of the extrusion load analysis processing which concerns on this embodiment, and shows the case of presenting the surface ratio extrusion load change map. It is explanatory drawing which shows an example of the list display window which displays the list of the thumbnail of the surface ratio extrusion load change map. It is explanatory drawing which shows the state which showed the analysis target kiln in the list display window. It is explanatory drawing which shows the surface ratio extrusion load change map of the candidate of the analysis target kiln, the tendency chart of the peak value of the surface ratio extrusion load, and the tendency chart about the degree of change of the peak value. It is explanatory drawing which shows an example of the surface ratio extrusion load change map. It is explanatory drawing which shows the example which displayed the peak position of the surface element extrusion load at the time of each coke extrusion on the surface element extrusion load change map. It is explanatory drawing which shows the example which normalized and displayed the surface element extrusion load of the surface element extrusion load change map. It is explanatory drawing which shows the example which binarized and displayed the surface ratio extrusion load change map. It is a block diagram which shows the hardware composition example of the extrusion load analyzer which concerns on this embodiment. As an example, it is explanatory drawing which shows the extrusion load change map generated based on the extrusion data of the kiln to be analyzed. It is explanatory drawing which shows a part of the extrusion load change map which showed the waveform characteristic of the peak position of the extrusion load in the extrusion load change map of FIG. It is a graph which shows the time change of the cumulative value of a surface rate extrusion load. It is a graph which shows the time change of the degree of change of the cumulative value of a surface rate extrusion load.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, so that duplicate description will be omitted.

<1. Overview>
First, an outline of the analysis process by the extrusion load analyzer of the coke oven according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is an explanatory diagram illustrating a change in the waveform of an extrusion load showing a relationship between an extrusion position and an extrusion load when coke is extruded. The upper side of FIG. 1 shows the extrusion load waveform (solid line) in the state of a normal kiln, and the lower side of FIG. 1 shows the extrusion load waveform (solid line) when there is an abnormality in the state of the kiln. For comparison, the extrusion load waveform (broken line) in the normal kiln state shown in the upper side of FIG. 1 is also shown on the lower side of FIG. 1. FIG. 2 is an explanatory diagram illustrating the effect of the load on the furnace body per unit area due to the shrinkage of the coke cake.

In the extrusion load analyzer of the coke oven according to the present embodiment, in the extrusion load waveform showing the relationship between the extrusion position and the extrusion load at the time of extrusion of coke, the extrusion position where the extrusion load is equal to or higher than the reference value (extrusion ram described later). Analyze the temporal changes in the region of the tip). The coke produced in the coke oven kiln is extruded from the kiln from the extruder ram of the extruder and housed in a guide car. Here, the extrusion direction of coke is defined as the furnace length direction, and the position of the extrusion ram in the furnace length direction at the time of coke extrusion is defined as the extrusion position. As shown in the upper part of FIG. 1, the extrusion load during coke extrusion continues to increase from the start of coke extrusion until the entire coke cake is compressed, but the extrusion load decreases when the coke cake starts to move. When there is no abnormality in the kiln, the extrusion load immediately falls below the standard value after the coke cake starts to move.

However, when the condition of the kiln deteriorates, the peak position of the waveform of the extrusion load (the position of the tip of the extrusion ram at the maximum of the extrusion load) and the width of the region where the extrusion load exceeds the reference value (hereinafter, "extrusion load width"). Also called.) Changes appear. The peak position of the extrusion load usually corresponds to the position where the coke cake starts to move. When the condition of the kiln deteriorates and the static friction due to the resistance of the furnace wall increases, the coke cake becomes difficult to move, and the peak position moves to the rear (guide vehicle side) as shown in the lower side of FIG. In addition, even after the coke cake starts to move, some resistance to the furnace wall remains, and the coke cake gets caught on the wall surface of the furnace. Therefore, the extrusion load is unlikely to decrease from the value at the peak position, and as shown in the lower part of FIG. 1, the extrusion load width a ₂ at which the extrusion load is equal to or higher than the reference value is larger than the extrusion load width a ₁ in the normal state. growing.

Based on these findings, the inventor of the present application has come up with the idea of detecting deterioration of the state of the kiln from changes in the peak position of the waveform of the extrusion load and the width of the extrusion load.

Also, when the coke is extruded, a part of the coke cake shrinks before the whole coke cake starts to move, but the contact area between the coke cake and the furnace wall surface changes depending on the state of shrinkage, and the force received by the furnace wall during extrusion changes. However, it is considered that the effect (damage) on the furnace body is different.

For example, as shown in FIG. 2, the length of the kiln (that is, the furnace length) in the extrusion direction is L, and the height of the coke cake 5 is h. The height of the coke cake 5 may be regarded as the same as the height of the kiln (that is, the height of the furnace). Further, when the coke cake 5 in the kiln is extruded toward the guide car by the extrusion ram 10 of the extruder, the position of the end of the kiln on the extruder side is set to 0, and the tip of the extrusion ram 10 in the furnace length direction of the kiln is set to 0. Let x be the position (ie, the extrusion position). For example, as shown on the upper side of FIG. 2, when the entire coke cake 5 starts to move even if the shrinkage amount of the coke cake 5 is small, the extrusion position of the extruded ram ₁₀ when the entire coke cake 5 starts to move is set to x1. The contact area A1 between the coke cake 5 and the wall surface of the furnace can be represented by (L _{× 1 )} × h.

On the other hand, when the entire coke cake 5 does not start moving unless the shrinkage amount of the coke cake 5 becomes large, as shown in the lower part of FIG. 2, the extrusion position x ₂ of the extrusion ram 10 when the entire coke cake 5 starts to move is set. , It is larger than the extrusion position x ₁ shown on the upper side of FIG. 2 (that is, x ₂ > x ₁ ). Therefore, the contact area A ₂ (= (L × ₂ ) × h) between the coke cake 5 and the furnace wall surface is smaller than the contact area A ₁ , and the extrusion load per unit area that the furnace wall surface receives from the coke cake 5 is large. It is expected to grow. From this, it is considered that not only the change in the peak position and the extrusion load width of the extrusion load waveform but also the extrusion load per unit area can be used as an index for detecting the deterioration of the state of the kiln.

As described above, the extrusion load analyzer of the coke oven according to the present embodiment has a temporal change in the peak position of the extrusion load, a temporal change in the extrusion load width, a temporal change in the extrusion load per unit area, and the like. Analyzes the temporal change of the index expressed by the value related to the extrusion load, processes it in a format that can visually determine that there is an abnormality in the kiln from the analysis result, and presents it to the operator as an extrusion load change map. .. This makes it possible to detect anomalies in the kiln that cannot be captured only by the maximum value of the extrusion load, without using a known furnace wall profile measurement method.

For example, a worker who manages a kiln can use the presented extrusion load change map to indicate a temporal change in the peak position of the extrusion load, a temporal change in the extrusion load width, or a temporal change in the extrusion load per unit area. By looking at and capturing the characteristics that appear when the kiln is abnormal, it is possible to detect signs of an abnormality in the kiln. As a result, the worker can take appropriate countermeasure actions at an early stage, and it is expected that the number of kiln abnormalities such as clogging or puncture will be reduced. In addition, it is not necessary to carry out additional inspections and maintenance in the furnace other than planned, and it is expected that the operation of the coke oven will be stable and the productivity will be improved.

<2. Configuration of coke oven management support system>
The configuration of the coke oven management support system 1 according to the present embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the coke oven management support system 1 according to the present embodiment. The coke oven management support system 1 is a system that supports the management of a coke oven kiln, and includes an extrusion load analyzer 100, an input device 200, and a display device 300, as shown in FIG.

[2-1. Extrusion load analyzer]
The extrusion load analyzer 100 analyzes the extrusion load applied to the kiln when coke is extruded, and detects an abnormality in the kiln. As shown in FIG. 3, the extrusion load analyzer 100 includes a data acquisition unit 110, a data processing unit 120, a display control unit 130, an analysis target selection unit 140, a display processing unit 150, and a management processing unit 160. , A data storage unit 170 is provided.

The data acquisition unit 110 acquires extrusion data including an extrusion position and an extrusion load when coke is extruded from the kiln, which is acquired in a coke oven composed of a plurality of kilns. The data acquisition unit 110 acquires the extrusion data every time the coke is extruded from the kiln, and outputs the extruded data to the data processing unit 120, for example.

The data processing unit 120 uses a plurality of extrusion data for each kiln to generate an extrusion load change map showing a temporal change of the extrusion load for each extrusion position. The extrusion load change map is information representing the temporal change of the extrusion load during coke extrusion, which is expressed by the extrusion load itself or a value related to the extrusion load. The data processing unit 120 creates an extrusion load change map for each kiln. The data processing unit 120 updates the extrusion load change map every time, for example, the extrusion of the coke cake is completed and the data is acquired. A detailed description of the generation of the extrusion load change map will be described later. The data processing unit 120 records the generated extrusion load change map in the data storage unit 170.

The display control unit 130 controls each functional unit of the extrusion load analyzer 100 that functions to display the extrusion load change map on the display device 300. For example, the display control unit 130 acquires a designated extrusion load change map from the data storage unit 170 based on the operation information input from the operator via the input device 200, and causes the display device 300 to display the designated extrusion load change map. Further, the display control unit 130 controls the analysis target selection unit 140, the display processing unit 150, and the management processing unit 160 to analyze or display the extrusion load change map. The display control unit 130 can display the processing results of the analysis target selection unit 140, the display processing unit 150, and the management processing unit 160 on the display device 300.

The analysis target selection unit 140 selects a kiln (hereinafter, also referred to as an “analysis target kiln”) for which it is necessary to analyze in detail whether or not an abnormality has occurred in the kiln from a plurality of kilns constituting the coke oven. The analysis target selection unit 140 selects the analysis target kiln from the temporal change of the extrusion load based on the extrusion load change map generated for each kiln. The details of the method of selecting the kiln to be analyzed will be described later.

The display processing unit 150 performs processing for displaying the extrusion load change map by emphasizing the characteristics of the temporal change of the extrusion load. The display processing unit 150 displays, for example, a waveform representing a change in the peak position of the extrusion load, which is the extrusion load, on the extrusion load change map, or normalizes the extrusion load change map. Alternatively, the display processing unit 150 may perform binarization processing so that the extrusion load represents only a range of a predetermined value or more in the extrusion load change map.

The management processing unit 160 identifies kilns in which changes are observed in the waveform characteristics of the extrusion load from the extrusion load change map, and provides management information for notifying the operator of the kiln in which the priority of the in-core inspection or maintenance should be increased. Generate. Based on the management information generated by the management processing unit 160, the display control unit 130 notifies the operator of the kiln to be inspected or maintained in the furnace with priority, and prompts the operator to take action.

The data storage unit 170 stores the extrusion load change map generated by the data processing unit 120. The data storage unit 170 may store not only the extrusion load change map but also the extrusion data used for creating the extrusion load change map.

[2-2. Input device]
The input device 200 is a device for inputting information for the operator to operate the extrusion load analyzer 100. The input device 200 is an operating means operated by the user, such as a mouse, a keyboard, a touch panel, buttons, switches, and levers. The operation information input from the input device 200 is input to the extrusion load analysis device 100, and the display control unit 130 controls each functional unit of the extrusion load analysis device 100 based on the input operation information.

[2-3. Display device]
The display device 300 is a device that displays information output from the extrusion load analyzer 100. The display device 300 is, for example, a CRT display device, a liquid crystal display device, a plasma display device, an EL display device, a lamp, or the like. The display device 300 displays, for example, an extrusion load change map generated by the extrusion load analyzer 100, and visually notifies the operator of the analysis result. In addition to the display device 300, the coke oven management support system 1 may include a voice output device (not shown) capable of aurally notifying information such as a speaker.

<3. Extrusion load analysis method>
The extrusion load analyzer 100 of the coke oven according to the present embodiment generates an extrusion load change map showing the temporal change of the extrusion load at each extrusion position, and the operator visually recognizes that there is an abnormality in the kiln from the analysis result. It is processed into a format that can be discriminated and presented to the operator. Hereinafter, the processing of the coke oven management support system 1 that generates an extrusion load change map by the extrusion load analyzer 100 and presents it to the operator to support the operator's management work will be described.

[3-1. Extrusion load waveform change map presentation process]
First, the process of presenting the extrusion load waveform change map, which is an example of the extrusion load change map, will be described with reference to FIG. Here, the extrusion load waveform change map is a map showing changes in the waveform of the extrusion load at the extrusion position. FIG. 4 is a flowchart showing an example of the extrusion load analysis process according to the present embodiment, and shows a case where an extrusion load waveform change map is presented.

First, the extrusion load analyzer 100 acquires extrusion data for generating an extrusion load waveform change map by the data acquisition unit 110 (S100). The data acquisition unit 110 acquires extrusion data of the entire coke oven kiln in a predetermined period (for example, one year) from the latest extrusion of coke. The extrusion data includes the extrusion date and time of coke, the kiln number assigned to identify the kiln, and the extrusion load (P1, P2, ...) For each extrusion position. An extrusion cycle number that specifies the extrusion cycle may be used instead of the extrusion date and time. Further, instead of the extrusion load, a measured value such as a current value or a torque value of a motor that drives the extrusion ram may be used. One extrusion of coke produces one extrusion data. The data acquisition unit 110 outputs the acquired extrusion data to the data processing unit 120.

In order to generate an extrusion load waveform change map for each kiln from the input extrusion data, the data processing unit 120 first classifies the extrusion data of all the coke oven kilns for each kiln and arranges the stratified data in chronological order. Generate (S110). The data processing unit 120 classifies the extrusion data for each kiln based on the kiln number of the extrusion data. Then, the data processing unit 120 arranges the extrusion data of each kiln in chronological order based on the extrusion date and time, and generates stratified data in which the extrusion load at each extrusion position is stratified. As a result, stratified data is generated for each kiln, for example, stratified data of kiln number # 1, stratified data of kiln number # 2, and so on. The layering process of arranging the extrusion data in chronological order may be performed by arranging the extrusion cycle numbers in order of the extrusion cycle numbers when the extrusion cycle numbers are acquired in the extrusion data.

When the extrusion data is stratified, the data processing unit 120 generates an extrusion load waveform change map of each kiln using the stratified data (S120). The extrusion load waveform change map visually represents the change in waveform characteristics of the extrusion load. For example, as shown in FIG. 5, a contour diagram in which the extrusion position is plotted on the horizontal axis and the extrusion time (or extrusion cycle number) is plotted on the vertical axis, and the value of the extrusion load at each extrusion position is expressed in shades is shown in the extrusion load waveform. It may be generated as a change map. In the extrusion load waveform change map shown in FIG. 5, the lighter the color, the higher the extrusion load. By arranging the extrusion data of one time in chronological order, it becomes possible to easily visually recognize how the portion where the extrusion load is high changes with the passage of time. The data processing unit 120 records the generated extrusion load waveform change map in the data storage unit 170.

When displaying the extrusion load waveform change map on the display device 300, the display processing unit 150 may perform a process of presenting the waveform feature change to the operator in an easy-to-understand manner. For example, as shown in FIG. 6, the peak position of the extrusion load at the time of each coke extrusion may be displayed on the extrusion load waveform change map. The waveform (solid line) shown in FIG. 6 represents the change in the peak position of the extrusion load, which makes it easier to visually grasp the tendency of the peak position.

Alternatively, the value of the extrusion load in the extrusion load waveform change map may be normalized and displayed. For example, as shown in the extrusion load waveform change map shown on the left side of FIG. 7, it may be difficult to clearly recognize the temporal change of the extrusion position or the peak position where the extrusion load becomes high. In such a case, the extrusion load is divided by the maximum value of the extrusion load and normalized, and as shown on the right side of FIG. 7, the extrusion load waveform change map showing the temporal change of the normalized extrusion load at each extrusion position. May be presented. By normalizing the extrusion load, the waveform feature change is emphasized as can be seen from the portion surrounded by the broken line in FIG. 7, so that the tendency of the peak position can be easily grasped visually.

Returning to the description of FIG. 4, when the extrusion load waveform change map is generated in step S120, the analysis target selection unit 140 configures a plurality of coke ovens based on the generated extrusion load waveform change map of each kiln. Among the kilns, a kiln (a kiln to be analyzed) that needs to be analyzed in detail whether or not an abnormality has occurred in the kiln is selected (S130). For example, in the extrusion load waveform change map represented by the contour diagram shown in FIG. 5, the range of shades that exceeds the reference value of the extrusion load (for example, 30 tons) becomes behind the extrusion position (that is, the guide wheel as the extrusion cycle progresses). If it spreads to the side), it often indicates a malfunction of the kiln. Therefore, in the analysis target selection unit 140, for example, for each coke extrusion, the range of shades in which the extrusion load is equal to or greater than the reference value (that is, the extrusion load width) is equal to or greater than the threshold value, and the period during which the extrusion load is equal to or greater than the threshold value is set. When the kiln is continuously upset for a predetermined period (for example, three extrusion cycles) or more, it is considered that there is a waveform change in the kiln malfunction, and the kiln is selected as the kiln to be analyzed.

The analysis target selection unit 140 performs the process of step S130 based on the extrusion load waveform change map of all the kilns of the coke oven. After step S130 is executed by the analysis target selection unit 140, the display control unit 130 determines whether or not it has been confirmed whether or not all the kilns are to be analyzed (S140), and confirms all the kilns. The analysis target selection unit 140 is made to repeatedly carry out the process of step S130 until the above is completed.

After confirming whether or not all the kilns are to be analyzed, the display control unit 130 gives priority to the operator to inspect or maintain the kiln to be analyzed selected in step S130. Notify the kiln that should be used and urge the response (S150). The information to be notified to the operator is generated from the management information generated based on the extrusion load waveform change map in the management processing unit 160. Here, the management information includes confirmation of the carbon adhesion status from the guide vehicle side, confirmation of narrowing of the kiln opening, removal of adhered carbon at the entrance, cutting of the kiln entrance brick, repair of cracks, and the like. For example, if the extrusion load continues to be high for about a week in the latter half of extrusion, there is a high possibility that the kiln opening will be narrowed. Therefore, confirmation of narrowing of the kiln opening (in-furnace inspection) is associated with the kiln in such a state as management information.

The management processing unit 160 changes, for example, to raise the priority of performing an in-furnace inspection or maintenance of the kiln to be analyzed and to advance the scheduled maintenance date. At this time, the management processing unit 160 compares the latest maintenance implementation status with the trouble occurrence status, and formulates a countermeasure plan different from the latest countermeasure. The display control unit 130 sets the kilns requiring inspection or maintenance in the furnace and the actions required for each kiln, via the display device 300, based on the countermeasure plan drafted by the management processing unit 160 included in the management information. Instruct the worker to notify. As a result, the worker can preferentially grasp the kiln to be inspected or maintained in the furnace, and can take necessary actions at an early stage.

[3-2. Surface ratio extrusion load change map presentation process]
Next, the process of presenting the surface ratio extrusion load change map, which is an example of the extrusion load change map, will be described with reference to FIG. Here, the surface ratio extrusion load change map is a map showing changes in the surface ratio extrusion load at the extrusion position. FIG. 8 is a flowchart showing an example of the extrusion load analysis process according to the present embodiment, and shows a case where a surface ratio extrusion load change map is presented.

(S200: Calculation of typical value of surface ratio extrusion load in each kiln or its degree of change)
First, in the extrusion load analyzer 100, when the extrusion data for generating the surface ratio extrusion load change map is acquired by the data acquisition unit 110, the data processing unit 120 obtains the extrusion data for each kiln of the coke oven. The representative value of the surface ratio extrusion load or the degree of change thereof is calculated (S200). In the surface ratio extrusion load PS (x), the height h of the coke cake is constant, and the extrusion load _P (x) at the extrusion position x is the contact area between the coke cake and the furnace wall surface ((L-x) × h). It is a value divided by and is calculated for each extrusion position x. That is, the planar extrusion load _PS (x) is defined by the following equation (1).

When the surface ratio extrusion load _PS (x) is used for operation management, a representative value of the surface ratio extrusion load _PS (x) is calculated, and the state of the kiln is determined based on the representative value. As a representative value of the surface ratio extrusion load _PS (x), for example, the cumulative value, the average value, the maximum value, or the peak value (the extrusion load becomes the maximum) from the start of extrusion of coke to the end of extrusion (or during extrusion). Time) etc. can be used. These values are expressed as follows.

(A) Cumulative value The cumulative value of the surface ratio extrusion load from the start of coke extrusion (extrusion position 0 [m]) to the end of extrusion (extrusion position X = _L [m]) is the surface ratio extrusion load PS (x). Can be used as a representative value of. That is, the cumulative value _{PS_accum} of the face ratio extrusion load is expressed by the following equation (2).

By using the cumulative value _{PS_accum} of the surface ratio extrusion load represented by the above equation (2) as a representative value of the surface ratio extrusion load _PS (x), a waveform change that cannot be captured by the maximum value of the extrusion load (for example). It is possible to increase the detection sensitivity (the tendency of the extrusion load to decrease after the extrusion load peaks).

(B) Mean value The average value from the start of coke extrusion (extrusion position 0 [m]) to the end of extrusion (extrusion position X = _L [m]) is used as a representative value of the surface ratio extrusion load PS (x). be able to. That is, the average value _{PS_avg} of the surface ratio extrusion load is expressed by the following equation (3).

By using the average value _{PS_avg} of the surface ratio extrusion load represented by the above equation (3) as a representative value of the surface ratio extrusion load _PS (x), a waveform change that cannot be captured by the maximum value of the extrusion load (for example). It is possible to increase the detection sensitivity (the tendency of the extrusion load to decrease after the extrusion load peaks). Further, by using the average value _{PS_avg} of the surface ratio extrusion load, it is possible to evaluate the influence of the surface ratio extrusion load applied to the furnace wall surface from the start to the end of extrusion of coke.

(C) Maximum value, peak value (when the extrusion load is maximum)
The maximum value of the surface ratio extrusion load _PS (x) can be used as a representative value. The maximum value _{PS_max} of the face ratio extrusion load is expressed by the following equation (4-1). Alternatively, the value of the surface ratio extrusion load (hereinafter referred to as "peak value of the surface ratio extrusion load") at the extrusion position ( _{x_peak} [m]) where the extrusion load of coke is maximized is referred to as the surface ratio extrusion load PS. It may be used as a representative value of (x). The peak value _{PS_peak} of the face ratio extrusion load is expressed by the following equation (4-2).

The maximum value _{PS_max} and the peak value _{PS_peak} of the surface ratio extrusion load are indexes focusing on the maximum value of the extrusion load and the change in the extrusion position, and can increase the detection sensitivity of the change in the maximum value of the extrusion load. Will be. The maximum value _{PS_max} and the peak value _{PS_peak} of the surface ratio extrusion load may be used in combination with the average value _{PS_avg} for operation management.

The cumulative value _{PS_accum} and the average value _{PS_avg} of the surface ratio extrusion load are from the start of extrusion to the end of extrusion in consideration of the accumulation of the surface ratio extrusion load from the start of coke extrusion to the end of extrusion or to the value below the reference value. It is an index considering the influence from the extrusion load on the furnace body in total up to. Further, the maximum value _{PS_max} and the peak value _{PS_peak} of the surface ratio extrusion load are indexes indicating the maximum effect of the instantaneous extrusion load during coke extrusion.

Further, as information for selecting the surface ratio extrusion load change map, the degree of change of the representative value of the surface ratio extrusion load may be calculated. The degree of change can be calculated using the representative value of the surface ratio extrusion load calculated in the past, and indicates the degree of change over time of the representative value. The degree of change can be calculated by expressing the behavior of the observed value (the nature of the data) with a probability distribution and using a change point detection technique or anomaly detection technique that estimates the abnormality or degree of change of the observed value from the probability distribution. .. For example, such techniques include, for example, Change Finder (see, for example, Non-Patent Document 1), Multivariate Statistical Process Control (MSPC), machine learning methods such as singular spectrum conversion or graph carlasso, and the like. (See, for example, Non-Patent Document 2).

By using the degree of change in the representative value of the surface ratio extrusion load, it is possible to capture the change in the representative value from the normal state. For example, the degree of change of the cumulative value _{PS_accum} and the average value _{PS_avg} of the surface ratio extrusion load can be detected where the waveform characteristics of the decreasing tendency of the extrusion load change after the extrusion load reaches the peak value. Further, for example, the degree of change of the maximum value _{PS_max} of the surface ratio extrusion load and the peak value _{PS_peak} can detect where the waveform feature corresponding to the change of the maximum value or the peak value of the extrusion load changes.

The data processing unit 120 records the extrusion data acquired by the data acquisition unit 110, the surface ratio extrusion load calculated for each extrusion data, and the degree of change in the representative value or the representative value in the data storage unit 170. do.

(S210: Display of information on the latest surface ratio extrusion load)
Next, the display control unit 130 causes the display device 300 to display information on the latest surface ratio extrusion load for each kiln constituting the coke oven. For example, the display control unit 130 arranges each kiln in descending order of the representative value of the surface ratio extrusion load or the degree of change thereof in a predetermined period (for example, one week) from the latest coke extrusion, and the latest surface ratio extrusion load of each kiln. May display information about. As a result, information on the kiln that is likely to have an abnormality is presented to the worker with priority.

The information of each kiln displayed on the display device 300 includes a kiln number, a representative value of the nearest surface ratio extrusion load of the kiln, or a value of the degree of change thereof. Alternatively, as shown in FIG. 9, the display device 300 may display a list display window 310 for displaying a list of thumbnails of the surface ratio extrusion load change map, which will be described later, generated for each kiln. The surface ratio extrusion load map is information representing the temporal change of the surface ratio extrusion load at each extrusion position, and can be created based on the information recorded in the data storage unit 170. In the list display window 310, in addition to the surface ratio extrusion load change map, a time series chart of the surface ratio extrusion load may be displayed side by side. In the list display window 310, for example, the surface ratio extrusion load change map of the kiln having a large representative value of the nearest surface ratio extrusion load of the kiln or the value of the degree of change thereof may be displayed in the upper left of the screen.

(S220: Selection of kiln candidates to be analyzed)
When the representative value of the latest surface ratio extrusion load or the value of the degree of change thereof is calculated for each kiln, whether or not an abnormality has occurred in the kiln among the plurality of kilns constituting the coke oven by the analysis target selection unit 140. Candidates for kilns (kilns to be analyzed) that need to be analyzed in detail are selected (S220). For example, empirically, a threshold value is determined for the latest representative value of the surface ratio extrusion load or the degree of change thereof, using a preset representative value of the surface ratio extrusion load or a reference value of the degree of change thereof as a threshold value.

The analysis target selection unit 140 selects a kiln whose representative value of the latest surface ratio extrusion load or the degree of change thereof exceeds a threshold value, and notifies the display control unit 130 of the selected kiln. The display control unit 130 notifies the operator of the kiln selected by the analysis target selection unit 140 via the display device 300. For example, as shown in FIG. 10, the display control unit 130 has a frame for the surface ratio extrusion load change map of the selected kiln from the surface ratio extrusion load change maps of each kiln displayed in the list display window 310. Display 320. In this way, by displaying an object indicating that the kiln of the surface ratio extrusion load change map has been selected as a candidate for analysis, the operator visually prompts the operator to inspect or maintain the kiln. be able to.

(S230: Selection of kiln to be analyzed)
Next, the analysis target selection unit 140 selects an analysis target kiln for detailed analysis from all the analysis target kiln candidates selected in S220 (S230). The analysis target selection unit 140 determines the threshold value for each kiln, for example, based on the representative value of the surface ratio extrusion load in the latest predetermined period or the tendency chart of the degree of change thereof, using a preset threshold value. Then, the analysis target selection unit 140 determines the kiln when, as a result of the threshold value determination, the number of times the representative value of the surface ratio extrusion load or the degree of change thereof exceeds the threshold value exceeds the determination value within the latest predetermined period. Select as the kiln to be analyzed. Specifically, for example, when the threshold value is exceeded three times or more in the representative value of the surface ratio extrusion load for the most recent week or the tendency chart of the degree of change thereof, the kiln is selected as the analysis target kiln.

In FIG. 11, a surface ratio extrusion load change map of a candidate kiln to be analyzed, a trend chart of peak values of the surface ratio extrusion load corresponding to the surface ratio extrusion load change map, and a change point detection technique are used for surface ratio extrusion. A trend chart for the degree of change calculated from the peak value of the load is shown. In the trend chart of FIG. 11, the change finder is applied as a change point detection technique to calculate the degree of change of the peak value.

(S240, S250: Detailed analysis of the kiln to be analyzed)
After that, detailed analysis information is presented for the kiln to be analyzed selected in step S230 using the surface ratio extrusion load change map. For example, when the operator operates the input device 200 and selects the thumbnail of the surface ratio extrusion load change map of the kiln whose detailed status is to be confirmed, the display processing unit 150 is selected based on the operation information from the input device 200. Instruct the display processing unit 150 to display the details of the surface ratio extrusion load change map of the kiln. The display processing unit 150 enlarges the selected surface ratio extrusion load change map and displays it on the display device 300.

As shown in FIG. 12, for example, the surface ratio extrusion load change map displayed by the display processing unit 150 has an extrusion position on the horizontal axis and an extrusion time (or extrusion cycle number) on the vertical axis, and the surface at each extrusion position. A contour diagram may be used in which the value of the rate extrusion load is expressed in shades. In the surface ratio extrusion load change map shown in FIG. 12, the lighter the color, the higher the surface ratio extrusion load. By arranging the single extrusion data in chronological order, it becomes possible to easily visually recognize how the portion where the surface ratio extrusion load is high changes with the passage of time.

When displaying the surface ratio extrusion load change map on the display device 300, the display processing unit 150 may perform a process of presenting the waveform feature change to the operator in an easy-to-understand manner. For example, as shown in FIG. 13, the peak position of the surface ratio extrusion load at the time of extrusion of each coke may be displayed on the surface ratio extrusion load change map. The waveform (solid line) shown in FIG. 13 represents the change in the peak position of the surface ratio extrusion load, and it is easy to visually grasp the tendency of the peak position.

Alternatively, the surface ratio extrusion load of the surface ratio extrusion load change map may be normalized and displayed. For example, as shown in the map of change in surface ratio extrusion load shown on the left side of FIG. 14, it may be difficult to clearly recognize the temporal change of the extrusion position and the peak position where the surface ratio extrusion load becomes high. In such a case, the surface ratio extrusion load is divided by the maximum value of the surface ratio extrusion load to normalize, and as shown on the right side of FIG. 14, the time change of the normalized surface ratio extrusion load at each extrusion position is obtained. A surface ratio extrusion load change map may be presented. Since the change in waveform characteristics is emphasized by normalizing the surface ratio extrusion load, it becomes clear in the surface ratio extrusion load change map on the right side of FIG. 14 that there is a portion where the surface ratio extrusion load is high. This makes it easier to visually grasp the tendency of the peak position.

Further, as shown in FIG. 15, the surface ratio extrusion load change map is binarized based on the reference value of the surface ratio extrusion load, and the region where the surface ratio extrusion load is less than the reference value and the region where the surface ratio extrusion load is equal to or more than the reference value are divided. It may be processed so that it is displayed in two parts. In the example of FIG. 15, the region where the surface ratio extrusion load is less than the reference value is shown in black, and the region where the surface ratio extrusion load is greater than or equal to the reference value is shown in white. By binarizing the surface ratio extrusion load change map in this way, it is possible to visually and clearly show the region where the surface ratio extrusion load is high.

By using such a surface ratio extrusion load change map, it is possible to roughly capture the tendency of the peak value of the surface ratio extrusion load and the tendency of the cumulative value or the average value of the surface ratio extrusion load. The tendency of the peak value of the surface ratio extrusion load can be recognized from the change in the peak position of the surface ratio extrusion load change map. Further, the tendency of the cumulative value or the average value of the surface ratio extrusion load can be recognized from the change in the width of the region where the surface ratio extrusion load is equal to or more than the reference value.

The display processing unit 150 may automatically perform the processing of step S240 for all the kilns to be analyzed. Alternatively, the process of step S240 may be performed for all the kilns to be analyzed selected by the operator. The display control unit 130 confirms whether or not the processing of step S240 has been performed for all the analysis target kilns or all the analysis target kilns selected by the operator (S250), and for all the analysis target kilns to be confirmed. The display processing unit 150 is repeatedly executed in step S240 until the confirmation is completed.

(S260: Notification)
When the confirmation of all the kilns to be analyzed to be confirmed is completed, the display control unit 130 notifies the operator of the kiln to be inspected or maintained in the furnace with priority, and prompts the response (S260). The information to be notified to the operator is generated by the management processing unit 160 based on the management information generated based on the surface ratio extrusion load change map.

The management processing unit 160 automatically detects an abnormality in the kiln based on the abnormality detection condition by using the surface ratio extrusion load change map generated in step S240. As an abnormality detection condition, for example, when the peak position of the surface ratio extrusion load is located behind the extrusion position (guide vehicle side) from the threshold value, the width of the region where the normalized value of the surface ratio extrusion load is equal to or more than the reference value is When it becomes equal to or more than the threshold value, when the range in which the surface ratio extrusion load becomes equal to or more than the reference value becomes equal to or more than the threshold value, etc. are set. The management processing unit 160 detects that there is an abnormality in the kiln when at least one of the abnormality detection conditions set in this way is satisfied.

Then, the management processing unit 160 changes, for example, to raise the priority of the inspection in the furnace or the maintenance of the kiln to be analyzed so as to advance the scheduled maintenance implementation date. At this time, the management processing unit 160 compares the latest maintenance implementation status with the trouble occurrence status, and formulates a countermeasure plan different from the latest countermeasure. The display control unit 130 sets the kilns requiring inspection or maintenance in the furnace and the actions required for each kiln, via the display device 300, based on the countermeasure plan drafted by the management processing unit 160 included in the management information. Instruct the worker to notify. As a result, the worker can preferentially grasp the kiln to be inspected or maintained in the furnace, and can take necessary actions at an early stage.

<4. Hardware configuration example>
Hereinafter, the hardware configuration of the extrusion load analyzer 100 according to the present embodiment will be described in detail with reference to FIG. 16. FIG. 16 is a block diagram showing a hardware configuration example of the extrusion load analyzer 100 according to the embodiment of the present invention.

The extrusion load analyzer 100 mainly includes a CPU 901, a ROM 903, and a RAM 905. Further, the extrusion load analyzer 100 further includes a bus 907, an input device 909, an output device 911, a storage device 913, a drive 915, a connection port 917, and a communication device 919.

The CPU 901 functions as an arithmetic processing device and a control device, and controls all or a part of the operation in the extrusion load analyzer 100 according to various programs recorded in the ROM 903, the RAM 905, the storage device 913, or the removable recording medium 921. .. The ROM 903 stores programs, calculation parameters, and the like used by the CPU 901. The RAM 905 primaryly stores a program used by the CPU 901, parameters that are appropriately changed in the execution of the program, and the like. These are connected to each other by a bus 907 composed of an internal bus such as a CPU bus.

The bus 907 is connected to an external bus such as a PCI (Peripheral Component Interconnect / Interface) bus via a bridge.

The input device 909 is an operating means operated by the user, such as a mouse, a keyboard, a touch panel, buttons, switches, and levers. Further, the input device 909 may be, for example, a remote control means (so-called remote controller) using infrared rays or other radio waves, or an external connection device 923 such as a PDA corresponding to the operation of the extrusion load analyzer 100. There may be. Further, the input device 909 is composed of, for example, an input control circuit that generates an input signal based on the information input by the user using the above-mentioned operating means and outputs the input signal to the CPU 901. By operating the input device 909, the user of the extrusion load analyzer 100 can input various data to the extrusion load analyzer 100 and instruct the processing operation.

The output device 911 is composed of a device capable of visually or audibly notifying the user of the acquired information. Such devices include display devices such as CRT display devices, liquid crystal display devices, plasma display devices, EL display devices and lamps, audio output devices such as speakers and headphones, printer devices, mobile phones, facsimiles and the like. The output device 911 outputs, for example, the results obtained by various processes performed by the extrusion load analyzer 100. Specifically, the display device displays the results obtained by various processes performed by the extrusion load analyzer 100 as text or an image. On the other hand, the audio output device converts an audio signal composed of reproduced audio data, acoustic data, and the like into an analog signal and outputs the signal.

The storage device 913 is a data storage device configured as an example of the storage unit of the extrusion load analyzer 100. The storage device 913 is composed of, for example, a magnetic storage device such as an HDD (Hard Disk Drive), a semiconductor storage device, an optical storage device, an optical magnetic storage device, or the like. The storage device 913 stores programs executed by the CPU 901, various data, various data acquired from the outside, and the like.

The drive 915 is a reader / writer for a recording medium, and is built in or externally attached to the extrusion load analyzer 100. The drive 915 reads the information recorded on the removable recording medium 921 such as a mounted magnetic disk, optical disk, magneto-optical disk, or semiconductor memory, and outputs the information to the RAM 905. The drive 915 can also write a record to a removable recording medium 921 such as a mounted magnetic disk, optical disk, magneto-optical disk, or semiconductor memory. The removable recording medium 921 is, for example, a CD media, a DVD media, a Blu-ray (registered trademark) media, or the like. Further, the removable recording medium 921 may be a compact flash (registered trademark) (CompactFlash: CF), a flash memory, an SD memory card (Secure Digital memory card), or the like. Further, the removable recording medium 921 may be, for example, an IC card (Integrated Circuit card) or an electronic device equipped with a non-contact type IC chip.

The connection port 917 is a port for directly connecting the device to the extrusion load analyzer 100. As an example of the connection port 917, there are a USB (Universal Serial Bus) port, an IEEE1394 port, a SCSI (Small Computer System Interface) port, an RS-232C port, and the like. By connecting the externally connected device 923 to the connection port 917, the extrusion load analyzer 100 acquires various data directly from the externally connected device 923 and provides various data to the externally connected device 923.

The communication device 919 is, for example, a communication interface composed of a communication device or the like for connecting to the communication network 925. The communication device 919 is, for example, a communication card for a wired or wireless LAN (Local Area Network), Bluetooth (registered trademark), WUSB (Wireless USB), or the like. Further, the communication device 919 may be a router for optical communication, a router for ADSL (Asymmetric Digital Subscriber Line), a modem for various communications, or the like. The communication device 919 can transmit and receive signals and the like to and from the Internet and other communication devices in accordance with a predetermined protocol such as TCP / IP. Further, the communication network 925 connected to the communication device 919 is configured by a network connected by wire or wirelessly, and may be, for example, the Internet, a home LAN, infrared communication, radio wave communication, satellite communication, or the like. ..

The above is an example of a hardware configuration capable of realizing the functions of the extrusion load analyzer 100 according to the embodiment of the present invention. Each of the above-mentioned components may be configured by using general-purpose members, or may be configured by hardware specialized for the function of each component. Therefore, it is possible to appropriately change the hardware configuration to be used according to the technical level at the time of implementing the present embodiment.

Using the extrusion load analyzer of the coke oven management support system of the present invention, the sign of the occurrence of a hole in the kiln of the coke oven was detected. FIG. 17 shows an extrusion load waveform change map generated based on the extrusion data of the kiln to be analyzed. FIG. 18 shows a part of the extrusion load waveform change map showing the waveform characteristics of the peak position of the extrusion load in the extrusion load waveform change map of FIG. From the temporal change of the extrusion load at the extrusion position shown in FIGS. 17 and 18, the peak position of the extrusion load moves to the rear of the extrusion position (that is, the guide wheel side) as time elapses, and the extrusion is performed. It was confirmed that the width of the area where the load value was high was widened. From this, it was found that some kind of malfunction had appeared in the kiln.

Further, in the kiln to be analyzed, the surface ratio extrusion load is calculated based on the extrusion data for one week before the occurrence of a hole, and the cumulative value of the surface ratio extrusion load of each extrusion data is calculated using the equation (2). At the same time, the degree of change in the cumulative value of the surface ratio extrusion load was calculated. FIG. 19 shows the time change of the cumulative value of the surface ratio extrusion load, and FIG. 20 shows the time change of the degree of change of the cumulative value of the surface ratio extrusion load. The puncture occurred in the extrusion of coke performed after the extrusion date and time dt8.

As shown in FIG. 19, the cumulative value of the face-to-face extrusion load showed a value of around 1.5 before the extrusion date and time dt5, but increased as it approached the occurrence of a hole after the extrusion date and time dt6. Further, as shown in FIG. 20, the degree of change in the cumulative value of the surface ratio extrusion load also increased in the same manner as the cumulative value of the surface ratio extrusion load. From this, it can be said that it is possible to automatically detect the malfunction of the kiln in advance by performing the threshold value determination on the cumulative value of the surface ratio extrusion load shown in FIG. 19 or the degree of change shown in FIG. .. Then, it can be inferred that it was possible to take appropriate measures such as inspecting the inside of the furnace by confirming the extrusion load waveform change map after receiving the detection of the malfunction of the kiln.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to these examples. It is clear that a person having ordinary knowledge in the field of the art to which the present invention belongs can come up with various modifications or modifications within the scope of the technical ideas described in the claims. , These are also naturally understood to belong to the technical scope of the present invention.

For example, in the above embodiment, the extrusion load waveform change map or the surface ratio extrusion load change map shows an example of a two-dimensional contour diagram, but the present invention is not limited to such an example. For example, a three-dimensional visualization graph may be obtained by taking an extrusion load or a surface ratio extrusion load as the third axis.

Further, in the above embodiment, the input device and the display device are separate from the extrusion load analyzer, but the present invention is not limited to this example, and the extrusion load analyzer is provided with an input unit and a display unit. May be good.

1 Coke furnace management support system 5 Coke cake 10 Ram 100 Extrusion load analyzer 110 Data acquisition unit 120 Data processing unit 130 Display control unit 140 Analysis target selection unit 150 Display processing unit 160 Management processing unit 170 Data storage unit 200 Input device 300 Display Device 310 List display window 320 frame

Claims (12)

Extrusion that represents the temporal change of the extrusion load at each extrusion position using a plurality of extrusion data including the extrusion load at each extrusion position of the coke by the extrusion ram obtained when the coke is extruded from the kiln of the coke oven. A data processing unit that generates a load change map,
A display control unit that displays the extrusion load change map on the display device,
A coke oven extrusion load analyzer. On the extrusion load change map generated by the data processing unit, a display processing unit that performs processing for displaying the peak position indicating the extrusion position when the extrusion load is maximized for each extrusion of coke is further provided.
The extrusion load analysis device for a coke oven according to claim 1 , wherein the display control unit causes the display device to display the extrusion load change map processed by the display processing unit . Further provided with a display processing unit that performs a process of dividing the value of the extrusion load of the extrusion load change map generated by the data processing unit by the maximum value of the extrusion load for each extrusion of coke to normalize.
The extrusion load analysis device for a coke oven according to claim 1 , wherein the display control unit causes the display device to display the extrusion load change map processed by the display processing unit . The data processing unit
The surface ratio extrusion load, which is the value obtained by dividing the extrusion load at each extrusion position by the contact area between the coke cake and the furnace wall surface, is calculated.
The extrusion load analyzer for a coke oven according to claim 1, wherein a surface ratio extrusion load change map representing a temporal change in the surface ratio extrusion load at each extrusion position is generated as the extrusion load change map. It is further equipped with an analysis target selection unit that selects the analysis target kiln that detects the abnormality of the kiln.
The analysis target selection unit
Based on the surface ratio extrusion load calculated by the data processing unit, a representative value of the surface ratio extrusion load is calculated for each coke extrusion.
In a tendency chart in which the representative values are arranged in chronological order, the kiln is selected as the analysis target kiln when the number of times the representative value exceeds the threshold value exceeds the judgment value within the latest predetermined period. , The extrusion load analyzer for the coke oven according to claim 4 . The analysis target selection unit
Further, the degree of change of the representative value of the surface ratio extrusion load is calculated.
In a tendency chart in which the degree of change is arranged in chronological order, the kiln is selected as the kiln to be analyzed when the number of times the degree of change exceeds the threshold value exceeds the judgment value within the most recent predetermined period. , The extruded load analyzer for a coke oven according to claim 5 . The extrusion load analyzer for a coke oven according to claim 5 or 6 , wherein the representative value of the surface ratio extrusion load is any one of a cumulative value, an average value, a maximum value, and a peak value of the surface ratio extrusion load. A management processing unit for detecting an abnormality in the analysis target kiln selected by the analysis target selection unit based on the surface ratio extrusion load change map is further provided.
The coke according to any one of claims 5 to 7 , wherein the display control unit notifies the kiln to be analyzed in which an abnormality is detected by the control processing unit as a kiln to be preferentially inspected or maintained in the furnace. Extruded load analyzer for furnace. A coke oven management support system that supports the management of coke oven kilns.
An extrusion load analyzer that analyzes the extrusion load applied to the kiln when coke is extruded and detects abnormalities in the kiln.
A display device that displays the analysis results of the extrusion load analyzer and
Equipped with
The extrusion load analyzer is
Extrusion load change representing the temporal change of the extrusion load at each extrusion position using a plurality of extrusion data including the extrusion load at each extrusion position of the coke by the extrusion ram acquired when extruding the coke from the kiln. The data processing unit that generates the map and
A display control unit that displays the extrusion load change map on the display device,
Has a coke oven management support system. Extrusion that represents the temporal change of the extrusion load at each extrusion position using a plurality of extrusion data including the extrusion load at each extrusion position of the coke by the extrusion ram obtained when the coke is extruded from the kiln of the coke oven. Data processing steps to generate a load change map and
A display control step for displaying the extrusion load change map on the display device,
Extrusion load analysis method for coke ovens, including. Computer,
Extrusion that represents the temporal change of the extrusion load at each extrusion position using a plurality of extrusion data including the extrusion load at each extrusion position of the coke by the extrusion ram obtained when the coke is extruded from the kiln of the coke oven. A data processing unit that generates a load change map,
A display control unit that displays the extrusion load change map on the display device,
A computer program that functions as an extrusion load analyzer for a coke oven. On the computer
Extrusion that represents the temporal change of the extrusion load at each extrusion position using a plurality of extrusion data including the extrusion load at each extrusion position of the coke by the extrusion ram obtained when the coke is extruded from the kiln of the coke oven. A data processing unit that generates a load change map,
A display control unit that displays the extrusion load change map on the display device,
A computer-readable recording medium containing a program that acts as an extrusion load analyzer for a coke oven.

Images