JP6909749B2 - How to clean the furnace lid cleaning device and the furnace lid - Google Patents

Description

The present invention relates to a furnace lid cleaning device for cleaning the furnace lid of a coke oven, and a method for cleaning the furnace lid using the same.

Conventionally, there is a furnace lid cleaning device for cleaning the refractory material constituting the furnace lid of the coke oven and the gas passage and knife edge provided around the refractory. For example, the device described in Patent Document 1. Using this device, the gas passage, knife edge, and refractory (specifically, refractory bricks) in the furnace lid with deposits such as tar and carbon generated during carbonization of coal in the furnace. Clean the surface.

Japanese Patent No. 4783559 Japanese Patent No. 5775858

The device described in Patent Document 1 is separately provided with a "side cleaner" for cleaning the side portion of the furnace lid, a "bottom cleaner" for cleaning the lower part of the furnace lid, and a "top cleaner" for cleaning the upper part of the furnace lid. Was there. However, if a separate cleaner is provided for cleaning the side portion, the upper portion, and the lower portion in this way, there is a problem that the structure of the furnace lid cleaning device becomes complicated.

On the other hand, Patent Document 2 describes that one cleaning unit, the "spouting nozzle means", cleans the side portions, the lower portion, and the upper portion of a member made of a refractory material. However, exposing the surface of the refractory to high-pressure water may scrape the refractory and should be avoided if possible. Therefore, it is necessary to consider this point when dealing with the above problem.

In view of some of the above-mentioned problems, the present invention is a furnace lid cleaning device having a simplified configuration, sufficient cleaning, and suppressing the possibility of damaging refractories, and cleaning of the furnace lid using the same. The challenge is to provide a method.

The present invention is a furnace lid cleaning device for cleaning the furnace lid of a coke furnace. The elevating table is provided with a cleaning unit for cleaning at least a side portion of the furnace lid, and a drive device for applying a lateral driving force to the cleaning unit, and the cleaning unit is provided above. A scraper that removes deposits adhering to the hearth by physical contact with the hearth, and a scraper provided below that adheres the supplied high-pressure water to the hearth by the water pressure. A furnace lid cleaning device comprising a combination of a water injection gun for removing adhering deposits, and the scraper and the water injection gun being configured to move within a predetermined range by the driving device. be.

According to this configuration, the scraper is located on the upper side and the water injection gun is located on the lower side, so that the scraper can be applied to the lower part of the furnace lid formed of the refractory, which is particularly liable to be soiled. Further, since the scraper and the water injection gun are configured to move within a predetermined range by the driving device, the scraper and the water injection gun can be moved to sufficiently perform cleaning.

Further, the drive device is provided on the elevator, and the scraper and the water injection gun are configured to rotate about a rotation axis by the drive device, and the cleaning unit is configured to rotate with respect to the scraper. The set of water injection guns may also be configured to have a pair of one side and one side.

According to this configuration, the configuration for movement can be simplified by making the movement of the scraper and the water injection gun a rotational movement about the rotation axis. Further, by configuring the scraper and the water injection gun as a pair on one side and the other side, the furnace lid can be cleaned from one side and the other side, and efficient cleaning is possible.

Further, the driving device can independently drive each pair of the scraper and the water injection gun forming a pair of the one side and the other side on the one side and the other side.

According to this configuration, each pair of scrapers and water injection guns that make up a pair can be driven independently on one side and the other side, so efficient cleaning can be achieved by optimal driving on one side and the other side. It is possible.

Further, a control unit for controlling the elevating device and the driving device can also be provided.

According to this configuration, the elevating device and the driving device can be appropriately operated by the control unit.

Further, the present invention is a method for cleaning the furnace lid of a coke oven using the furnace lid cleaning device, in which the lower portion of the furnace lid is cleaned by using the scraper in the cleaning section. ..

According to this method, even if the scraper is located on the upper side and the water injection gun is located on the lower side, the lower part of the furnace lid can be cleaned by also using the cleaning part for cleaning the side part. It is also possible to clean the upper part of the furnace lid with this cleaning unit.

According to the present invention, it is easy to apply the scraper to the lower part of the furnace lid formed of the refractory, which is particularly liable to get dirty. Moreover, even if the deposits removed from the furnace lid by the scraper adhere to the water injection gun, the water injection gun is unlikely to break down. Therefore, the configuration is simplified, the cleaning can be performed sufficiently, and the possibility of damaging the refractory can be suppressed.

It is a side view which shows the outline of the furnace lid cleaning apparatus which concerns on one Embodiment of this invention. FIG. 5 is a cross-sectional view taken along the line aa in FIG. 1 showing the relationship between the cleaning portion of the furnace lid cleaning device and the furnace lid (a state in which the scraper is separated from the side surface of the heat insulating portion). FIG. 5 is a cross-sectional view taken along the line bb in FIG. 1 showing the relationship between the cleaning portion of the furnace lid cleaning device and the furnace lid (a state in which the scraper is in contact with the side surface of the heat insulating portion). It is a top view which shows the relationship (state at the time of cleaning the upper surface of the heat insulating part) of the cleaning part of the furnace lid cleaning apparatus, and the furnace lid. An example of the configuration of the water injection gun of the furnace lid cleaning device is shown, (a) is a cc end view (only the central portion is shown) of (b), and (b) is a vertical sectional view.

Hereinafter, the furnace lid cleaning device 1 according to an actual condition of the present invention will be described. As shown in FIG. 1, the furnace lid cleaning device 1 of the present embodiment includes a cleaning unit 2 for cleaning at least a side portion of the furnace lid L. In FIG. 1, the cleaning unit 2 is shown in three places, upper, middle, and lower, but these are in three states during the movement of the cleaning unit 2 (the state in the upper position in the furnace lid L, the intermediate position). A certain state (a state in a lower position) is shown in one figure at the same time, and the furnace lid cleaning device 1 of the present embodiment includes only one cleaning unit 2.

The cleaning unit 2 includes a combination of the scraper 21 and the water injection gun 22 as a set. The scraper 21 and the water injection gun 22 are attached to an elevating table 23 that can move up and down along the longitudinal direction of the furnace lid L to move up and down. The furnace lid cleaning device 1 includes a rail portion 24 extending in the vertical direction and an elevating device 25 for applying a driving force to the elevating table 23, and the elevating table 23 moves up and down along the rail portion 24. One cleaning unit 2 is provided with two scrapers 21 and two water injection guns 22. That is, this one cleaning unit 2 is configured to have a pair of the scraper 21 and the water injection gun 22 as a pair on one side and the other side (left and right sides in FIGS. 2 to 4). As shown in FIG. 2 or 3, a portion of which the combination of one scraper 21 and one water injection gun 22 is formed of a refractory material (refractory brick) in the furnace lid L at the time of cleaning. It is arranged on one side surface B1 and the other side surface B2 in the width direction of the heat insulating portion B.

The scraper 21 removes deposits adhering to the furnace lid L by physical contact with the furnace lid L, and is mainly attached to the surfaces B1 to B4 of the heat insulating portion B in the furnace lid L. Shave off the kimono.

The scraper 21 has a substantially columnar shape, and has a spiral protrusion (abbreviated by a diagonal line in the drawing) on the side surface. As the scraper 21 rotates in the axial direction, the protrusions that move while rotating with respect to the furnace lid L scrape off the deposits. The shape of the scraper 21 is not limited to a substantially cylindrical shape, and can be changed to various shapes.

Further, in the present embodiment, the water injection gun 22 is configured so that the supplied high-pressure water can be converted into a rotary flow by the water pressure and injected. However, the configuration is not limited to this. The basic configuration of the water injection gun 22 is the same as that described in Japanese Patent Application Laid-Open No. 2014-234466 by the applicant. Specifically, as shown in FIG. 5B, a tubular rotor 222 is rotatably provided in the casing 221. The lower end of the rotor 222 is in contact with and supported by the retainer 223. In the space 224 formed in the casing, as shown in FIG. 5A, the discharge portions 225 arranged at positions deviated in the radial direction, for example, in a parallel relationship as shown in the drawing, are arranged outward. The high-pressure water F is discharged, and when pushed by the rotating water flow generated by the high-pressure water F, the rotor 222 rotates at the upper end portion in the direction R along the inner surface 2211 of the casing. Since the direction of the rotor 222 changes every moment due to this rotational movement, the water flow discharged from the lower end portion of the tubular rotor 222 becomes a rotational flow corresponding to the rotational movement of the upper end portion. This rotating flow is ejected to the outside from the injection port 226 opened at the lower end of the casing.

The water injection gun 22 removes deposits adhering to the furnace lid L by the water pressure of the high-pressure water ejected from the injection port 226, and mainly removes the gas passage L1 and the knife edge in the furnace lid L. The deposits adhering to L2 can be repelled by water pressure.

In the present embodiment, the water pressure of the high-pressure water supplied to the water injection gun 22 and ejected is set to 30 MPa or more and 50 MPa or less. The rotation speed of the rotating flow formed by the water injection gun 22 is set to 1000 rpm. The distance from the injection port of the water injection gun 22 to the furnace lid L is set to 100 mm or more and 150 mm or less. With such a setting, the trajectory of the high-pressure water injected from the water injection gun 22 becomes denser than that of a structure rotated by a hydraulic drive device, for example, and cleaning can be sufficiently performed.

The scraper 21 is provided above and the water injection gun 22 is provided below in the cleaning unit 2. The scraper 21 and the water injection gun 22 are configured to rotate with respect to the lift 23 in a predetermined range (predetermined angle) when viewed from above or below with respect to the rotation shaft 26. Specifically, in this rotary motion, a rotary shaft 26 having an axis along the vertical axis is provided on the base end side of each scraper 21, and the scraper 21 and water injection are provided on the movable member 27 connected to the rotary shaft 26. Since the gun 22 is fixed, the movable member 27 moves (specifically, rotates) within a predetermined range in response to the driving force of the driving device 28 that gives a driving force in the lateral direction. Then, as shown in FIG. 2 or 3, this rotary motion is a motion that approaches and separates from the side surfaces B1 and B2 of the heat insulating portion B in the furnace lid L. By rotating the scraper 21 and the water injection gun 22 in this way, cleaning can be sufficiently performed. Further, by making the movement of the scraper 21 and the water injection gun 22 a rotational movement about the rotation shaft 26, the configuration for movement can be simplified.

As described above, one cleaning unit 2 is configured to have a pair of a scraper 21 and a water injection gun 22 on one side and a pair on the other side. Therefore, as shown in FIG. 4, in the rotational movement, one side (the set of the pair shown on the left side of FIG. 4) is first operated toward the center side of the heat insulating portion B in the left-right direction. After that, it can be returned to the original position, and then the other side (the pair of the pair shown on the right side of FIG. 4) can move toward the center side of the heat insulating portion B. The operation is an operation for preventing contact between the pair on one side and the pair on the other side (the pair of the scraper 21 and the water injection gun 22), and at the same time when the pair on one side of the cleaning unit 2 returns to the original position, the other The side set may be operated. In addition, it can be an exercise in which one side and the other side are operated at the same time. When each pair of one side and the other side is operated at the same time to move toward the center side of the heat insulating portion B and then moved to the vicinity of the center of the heat insulating portion B, one side is moved in the direction of returning to the original position. , The other side moves as it is and moves in the direction of returning to the original position at the moving end. By appropriately performing this rotational movement, the lower surface B4 can be cleaned in addition to the side surfaces B1 and B2 of the furnace lid L. It is also possible to clean the upper surface B3 with the one cleaning unit 2. With this configuration, the furnace lid L can be cleaned from one side and the other side, so that efficient cleaning is possible. Further, since each pair of the scraper 21 and the water injection gun 22 forming a pair can be driven independently on one side and the other side, more efficient cleaning can be performed by optimal driving on one side and the other side. It is possible.

Focusing on the scraper 21, as shown in FIG. 3, the scraper 21 is brought into contact with the side surfaces B1 and B2 of the heat insulating portion B when cleaning is performed, and as shown in FIG. 2 when not. The scraper 21 can be separated from the side surfaces B1 and B2 of the heat insulating portion B. At these times, the high-pressure water does not necessarily have to be injected from the water injection gun 22.

The scraper 21 is also used for cleaning the lower surface B4 of the heat insulating portion B (FIG. 4 shows the relationship with the upper surface B3, but the relationship with the lower surface B4 is also the same). By the rotational movement, the scraper 21 can be brought into contact with the lower surface B4 of the heat insulating portion B at the time of cleaning, and the entire area of the lower surface B4 can be covered.

On the other hand, when cleaning the upper surface B3 of the heat insulating portion B, the scraper 21 is not used and the water injection gun 22 is used. As shown in FIG. 4, the rotational movement can cover the entire upper surface B3 while applying the high-pressure water from the water injection gun 22 to the upper surface B3 of the heat insulating portion B when cleaning is performed.

Regarding the elevating range when the cleaning unit 2 moves up and down by the elevating mechanism, the upper end is the position where the water injection gun 22 exists so that high pressure water can be injected to the knife edge L2 at the upper part of the furnace lid L, specifically. Is a position above the upper surface B3 (cleaning unit 2 shown in the upper part of FIG. 1). Further, the lower end is a position where the scraper 21 can come into contact with the lower surface B4 of the heat insulating portion B of the furnace lid L (cleaning portion 2 shown at the lower part of FIG. 1).

As another configuration of the furnace lid cleaning device 1, although details are not shown and described, high-pressure water supply sources (water storage tank, pump, piping) and each part (particularly, the lifting device 25 and the driving device 28) are provided. It is equipped with a control unit for control.

In the cleaning unit 2 of the present embodiment configured as described above, the scraper 21 is located above and the water injection gun 22 is located below. Due to this positional relationship, the scraper 21 can be applied to the lower portion (lower surface B4) of the heat insulating portion B formed of the refractory material in the furnace lid L, which is particularly liable to be contaminated due to the deposits dripping downward. Moreover, in the present embodiment, since the water injection gun 22 is configured to be converted into a rotary flow by the water pressure of the supplied high-pressure water, the mechanism for forming the rotary flow (for example, a hydraulic drive device) is a water injection gun. It is not necessary to install it outside the 22. Therefore, the configuration of the cleaning unit 2 can be simplified. Further, since there is no external mechanism that easily breaks down, even if the deposits removed from the furnace lid L by the scraper 21 adhere to the water injection gun 22, the water injection gun 22 is less likely to break down, which is advantageous. ..

Next, a method of cleaning the furnace lid L of the coke oven using the furnace lid cleaning device 1 will be briefly described. First, the furnace lid cleaning device 1 is arranged so as to face the heat insulating portion B of the furnace lid L removed from the coke oven. In this state, the cleaning unit 2 is moved up and down by the elevating device 25 for cleaning (the up and down movement is one direction (one-way direction), and it is not necessary to reciprocate). At that time, a rotary motion in which the movable member 27 rotates within a predetermined range is also used as appropriate. In this way, since the furnace lid L can be cleaned by one cleaning unit 2, the furnace lid cleaning device 1 of the present embodiment can be efficiently cleaned even though it has a simplified configuration.

Further, in the cleaning, the upper part of the furnace lid L is cleaned by using the water injection gun 22 alone in the cleaning unit 2. Even in the cleaning section 2 where the scraper 21 is located above and the water injection gun 22 is located below as in the present embodiment, the lower portion of the furnace lid L is also used for cleaning the side portions. It is advantageous in that it can be cleaned. It is also possible to clean the upper part as well as the side part and the lower part.

The furnace lid cleaning device 1 according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

For example, in the above embodiment, one cleaning unit 2 is configured to be able to clean all four sides (one side, the other side), the lower part, and the upper part of the furnace lid L. However, the present invention is not limited to this, and for example, the side portion (one side, the other side) and the lower portion may be cleaned by one cleaning unit 2, and the upper portion may be cleaned by the other cleaning unit 2. good. The cleaning device in this case is provided with two cleaning units 2, but even so, separate cleaning units 2 are provided for each of the side portion (one side, the other side), the lower portion, and the upper portion. Compared to the above configuration, the side portion and the lower portion can be cleaned together by one cleaning unit 2, which is advantageous in that the configuration of the furnace lid cleaning device 1 as a whole can be simplified.

Further, the water injection gun 22 constituting the embodiment is configured so that the supplied high-pressure water can be converted into a rotary flow by the water pressure and injected. However, the configuration of the water injection gun is not limited to this, and for example, the entire water injection gun can be moved by hydraulic drive to make the supplied high-pressure water a rotary flow or the like.

Further, in the above-described embodiment, the upper part of the furnace lid L is cleaned by using the water injection gun 22 alone. However, the present invention is not limited to this, and for example, a scraper dedicated to the upper portion may be provided on the movable member 27, and the scraper dedicated to the upper portion may be used in combination with the water injection gun 22 for cleaning if necessary.

1 Furnace lid cleaning device 2 Cleaning section 21 Scraper 22 Water injection gun 23 Lifting platform 25 Lifting device 26 Rotating shaft 28 Drive device L Furnace lid L1 Gas path L2 Knife edge B Insulation

Claims (5)

It is a furnace lid cleaning device for cleaning the furnace lid of a coke oven.
The furnace lid cleaning device is
A lift that can be raised and lowered,
An elevating device that applies a vertical driving force to the elevating platform,
A cleaning unit provided on the elevator and cleaning at least a side portion of the furnace lid, and a cleaning unit.
A drive device that applies a lateral driving force to the cleaning unit is provided.
The cleaning part
A scraper provided above and which removes deposits adhering to the furnace lid by physical contact with the furnace lid.
A water injection gun, which is provided below and uses the supplied high-pressure water to remove deposits adhering to the furnace lid by the water pressure, and a water injection gun.
As a set,
A furnace lid cleaning device in which the scraper and the water injection gun are configured to be moved within a predetermined range by the driving device. The drive device is provided on the lift and lift.
The scraper and the water injection gun are configured to rotate about a rotation axis by the drive device.
The furnace lid cleaning device according to claim 1, wherein the cleaning unit is configured to have a pair of the scraper and the water injection gun on one side and the other side. The furnace lid cleaning device according to claim 2, wherein the driving device drives each pair of the scraper and the water injection gun forming a pair of the one side and the other side independently on the one side and the other side. .. The furnace lid cleaning device according to any one of claims 1 to 3, further comprising a control unit that controls the elevating device and the driving device. A method for cleaning the furnace lid of a coke oven using the furnace lid cleaning device according to any one of claims 1 to 4.
A method for cleaning a furnace lid, which cleans the lower part of the furnace lid by using the scraper in the cleaning section.

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