JP5114664B2 - Coke extrusion load evaluation method and apparatus - Google Patents

Description

  The present invention relates to a coke cake extrusion load evaluation method and apparatus capable of quantitatively evaluating the influence of furnace wall unevenness on the extrusion load, for example, during coke extrusion in a horizontal chamber furnace type coke oven.

Stable operation of the coke oven is important from the viewpoints of securing production volume, reducing manufacturing costs, and protecting the furnace body. However, in reality, troubles occur due to various reasons, and it is often impossible to maintain stable operation.
For example, when coke is extruded, a part of the pushing force by the extruder ram is applied to the furnace wall surface as a side pressure. This extruding side pressure increases as the force required to extrude the coke increases, and sometimes causes troubles such as broken holes in the furnace wall bricks and furnace wall damage.

For this reason, by estimating how much force (load) is applied to the furnace wall at the time of coke extrusion, it is possible to manage operating conditions so that the above trouble does not occur. Are known.
The wall of the coke oven is often worn locally or carbon is attached, and the force applied to the oven wall during coke extrusion is not uniform throughout, depending on the unevenness of the furnace wall, etc. Therefore, in order to estimate such force (load) more accurately, it is necessary to evaluate the influence of unevenness locally generated on the furnace wall.

Conventionally, a coke extrusion load evaluation apparatus has been used to perform a coke extrusion test necessary for estimating a load applied to a furnace wall. An example of such a device is shown in US Pat.
As shown in FIG. 10, this apparatus has a U-shaped enclosure made up of side movable walls 31 and 32 that are arranged to face each other so that the distance can be adjusted, and a receiving side movable wall 33 that abuts the end face of the side movable wall. When the coke cake 34 is charged into the enclosure and the coke cake 34 in the enclosure is extruded from the release side by the extruder 35, the side movable walls 31 and 32, the receiving side movable wall 33 and A number of load measuring devices 36 provided in the extruder 35 can directly measure the load distribution and the entire load of the side movable wall, the receiving side movable wall, and the extruder.

  The device proposed in this Patent Document 2 can measure the influence of coke cake locally on the furnace wall in more detail by measuring not only the load of the entire support but also the load distribution. However, in the actual furnace wall, as described above, there are multiple irregularities of various shapes in the longitudinal direction of the furnace wall and the furnace height direction. There was a problem that it could not be measured.

In addition, it is presumed that concentrated load is generated locally at the places where the unevenness of the furnace wall exists, especially when evaluating the critical load at which the furnace wall of the coke oven that has deteriorated has progressed. It is necessary to know the local load distribution on the furnace wall accurately.
Conventionally, as a method for evaluating a local load on a furnace wall, it is known to install a pressure sensitive paper at a location of the furnace wall to be evaluated. However, even if this technology is applied to the above test apparatus, the maximum load is finally recorded on the pressure sensitive paper, so there is a possibility that the load distribution will be overestimated, and it is continuous in time. Therefore, there is a problem that it is impossible to measure the load.

JP 2000-144139 A Japanese Patent Laid-Open No. 10-332501

  Therefore, the present invention solves the above-described problems of the prior art, and how the unevenness of various shapes scattered in the longitudinal direction of the furnace wall and the height direction of the furnace affects the extrusion load as a whole. It is an object of the present invention to provide a method and an apparatus that can quantitatively evaluate and can further quantitatively evaluate the load distribution of the uneven portion where local concentrated load is likely to occur in time.

The gist of the present invention for solving the above problems is as follows.
(1) When coke is disposed between the left and right side walls of the coke extrusion load evaluation device, and the coke is extruded from one side to the other along the side wall, a protrusion is provided on at least one side wall and the coke is pushed. The coke is extruded while applying a reaction force to the coke, and the force applied to the left and right side walls when the coke passes through the protrusions, the extrusion force during the extrusion, and the force received when the reaction force is applied are measured. And evaluating the extrusion load based on these measured values and the value of the reaction force.
(2) When extruding coke, a load is loaded on the coke to extrude, and in addition to the measured value and the reaction force value, the load is further evaluated to evaluate the extrusion load. The evaluation method of coke extrusion load according to (1).
(3) Between the side wall and the coke, a sheet-like pressure detecting means capable of continuously measuring a change in force at an arbitrary position in the detection region is disposed, and the pressure detecting means The distribution of force acting on the side wall and the change in force at an arbitrary position are measured continuously in time, and in addition to the measurement value and the reaction force value, the measurement result of the pressure detection means is further added to the extrusion. The method for evaluating a coke extrusion load according to any one of (1) and (2), wherein the load is evaluated.

(4) Left and right supports disposed on the base at intervals, left and right side walls disposed between the left and right supports to form a coke extrusion space on the inside, and the left and right supports Coke extrusion means arranged along the extrusion direction on the base on one side of the support, and coke extrusion arranged on the base on the other side of the left and right supports , and when the coke is extruded A reaction force applying means for applying a reaction force against the pushing force by the means to the coke, and a coke arranged between the left and right side walls, and arranged in front and rear in the pushing direction, and more than a distance between the left and right side walls. A movable wall having a small width; a protrusion disposed on a surface of the at least one side wall facing the coke; and having a slope that is continuous from the facing surface; and between the support and the side wall; Between movable walls And the evaluation device of the coke pushing load, characterized in that it comprises a load detecting means placed respectively between the reactive force applying means and said movable wall.
(5) A sheet-like pressure detection means capable of continuously measuring a change in force at an arbitrary position in the detection region is further arranged between the charged coke and the left and right side walls. (4) The apparatus for evaluating the coke extrusion load according to (4).
(6) The coke extrusion load evaluation apparatus according to (4) or (5), wherein the protrusion is installed on the side wall so that the position can be arbitrarily changed.
(7) The apparatus for evaluating a coke extrusion load according to any one of (4) to (6), further comprising a load loaded on the coke.

  According to the present invention, it is possible to quantitatively evaluate how the unevenness of various shapes scattered in the longitudinal direction of the furnace wall and the furnace height direction affects the extrusion load as a whole, Since the load distribution at uneven parts where local concentrated load is likely to occur can be evaluated continuously in time, the extrusion load at the time of coke extrusion can be estimated more accurately, and troubles such as broken bricks and furnace wall damage Can be prevented.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view of a coke extrusion load evaluation apparatus showing an embodiment of the present invention, and FIG. 2 is a side view of the same. In the figure, left and right supports 2 and 3 are installed on a base 1 at a certain interval, and are also constant before and after the extrusion direction intersecting the arrangement direction of the left and right supports 2 and 3. A hydraulic cylinder 4 and an air cylinder 6 are installed at intervals. The left and right supports 2 and 3 are fixed so that the installation position can be adjusted with respect to the base.

  A pair of side panels 8, 9 serving as left and right side walls are disposed between the left and right supports, and front and rear panels 10, 11 serving as movable walls are disposed between the opposing cylinders. 9 is disposed in the vicinity of the end portion of the sheet 9, and a press space for the coke cake 14 is formed by the side panel and the front and rear panels.

  The hydraulic cylinder 4 constitutes an extruding means for applying an extruding force to the coke cake 14, and a push block 5 serving as a ram head for transmitting the extruding force to the coke is attached to the tip of the piston rod. Yes. The air cylinder 6 constitutes a reaction force applying means for applying a reaction force against the pushing force, and a receiving block 7 for transmitting the reaction force and receiving the pushing force is attached to the piston rod tip. It has been. Rollers 13 are respectively attached to the base sides of the push-side and receiving-side blocks 5 and 7 so that they can move smoothly on the base.

  Generally, the side pressure applied to the furnace wall decreases from the extruder ram side to the guide wheel side of the carbonization chamber. In order to simulate the decrease in the frictional force due to the decrease in the side pressure in the furnace length direction, when the coke cake 14 surrounded by each panel is pushed out by the hydraulic cylinder 4, the magnitude of the reaction force by the air cylinder 6 is changed. Like that. Thereby, it becomes possible to measure the extrusion force under the condition that the assumed position in the furnace length direction of the coke cake 14 to be actually extruded is changed.

  In the embodiment shown in FIGS. 1 and 2, an example is shown in which the hydraulic cylinder 4 is applied to the pushing means and the air cylinder 6 is applied to the reaction force applying means. However, the present invention is not limited to this embodiment. Either a hydraulic cylinder or an air cylinder may be used for each means. Further, the number of each cylinder is not limited to the example shown in the figure. In general, the hydraulic cylinder 4 can generate the same load with a smaller cylinder than the air cylinder 6, so the hydraulic cylinder 4 is more advantageous for downsizing the apparatus.

The front and rear panels 10 and 11 are formed to have a width smaller than the interval between the side panels 8 and 9 in order to move between the side panels 8 and 9 together with the coke in the coke extrusion direction. Further, a roller may be provided at the lower end of the front and rear panels to facilitate movement.
Each panel is suspended and supported vertically by means (not shown) such as a chain block so that it can move when the coke cake 14 is charged and pushed out, and is installed on the base 1.

  The side panels 8 and 9 are movable in the direction (width direction) perpendicular to the coke extrusion direction, and a stopper is provided on the side of the air cylinder 6 on the base 1 so as not to move in the coke extrusion direction during coke extrusion. Is preferred.

  Between the side panels 8 and 9 and the supports 2 and 3, and between the front and rear panels 10 and 11 facing the push side and receiving side blocks 5 and 7, respectively, load cells 12 are installed as load detecting means. . At each location, a plurality of load cells 12 are installed, and the pushing force of the hydraulic cylinder 4, the force received by the air cylinder 6, and the force received by the left and right side panels 8, 9 are, for example, a plurality of measured values. It is detected as the total value of.

  Projections 15 as shown in FIG. 3 are attached to the surfaces of the side panels 8 and 9 facing the coke cake 14 by fixing means such as welding and bolts. In addition, in order to fix to the side panels 8 and 9 so that the position of the protrusion 15 can be arbitrarily changed, fixing with a bolt is preferable. For example, a structure in which a long hole is provided in the extrusion direction of the side panels 8 and 9 and the fixing position of the projection 15 by the bolt can be changed in the extrusion direction can be employed.

As shown in the figure, the protrusion 15 has a wedge shape having a slope 16 continuous with the upper surfaces of the side panels 8 and 9 and a horizontal surface 17 parallel to the upper surface of the panel, and the protrusions 15 have different angles α and lengths d. By preparing a plurality of the above, the influence on the extrusion load due to the difference in the shape of the protrusion can be evaluated.
By using this protrusion 15, the influence on the extrusion load when the wall surface of the coke oven carbonization chamber has irregularities can be measured quantitatively.

  Since the upper part of the coke cake surrounded by each panel is open, a load can be loaded on the coke cake to be measured. In an actual coke oven, there is a self-load distribution in the height direction of the coke. Therefore, by loading the load, the assumed position of the protrusion 15 can be changed in the height direction of the furnace where the self-load is different. As a load to be loaded on the coke cake, it is preferable to use a steel plate and change the thickness of the steel plate or the number of stacked sheets to change the magnitude of the load. When no load is loaded, the deformation behavior due to the coke protrusion during the extrusion process can be observed and recorded from above.

  A position detector 18 such as a laser distance meter is attached to the machine frame on the hydraulic cylinder 4 side provided on the base 1, and the movement distance of the push side block 5 during coke extrusion is continuously measured. It can be measured.

  In the coke cake extrusion load evaluation apparatus configured as described above, for example, the coke cake 14 having a predetermined size obtained by dry distillation in a small electric furnace chamber furnace or the like is used for the side panels 8 and 9 and the front and rear panels 10 and 10 of the apparatus. 11 is placed in the space surrounded by 11. The clearance between the arranged coke cake 14 and the side panels 8 and 9 is adjusted by the movement of the left and right supports 2 and 3. A protrusion 15 is previously attached to the side panel 9 on one side of the left and right supports 2 and 3 as shown in FIG.

Thereafter, the hydraulic cylinder 4 is operated to apply an extrusion force to the coke cake 14, and a reaction force is applied by the air cylinder. As a result, the coke cake 14 moves to the air cylinder side by the force of (extrusion force-reaction force). At that time, the coke cake 14 moves from the initial state (I) of FIG. 4A to move the slope of the protrusion (uphill) (II) and finally ride on the protrusion vertex (III).
When the coke passes through the protrusions 15, the load cell measures the force applied to the left and right side panels, the pushing force when pushing, and the receiving force when applying the reaction force.

  The side panels 8 and 9 are provided with protrusions having an angle α of 9.5 degrees, a slope length d182.5 mm, and a horizontal plane length of 220 mm, and a coke cake having an approximate size of 600 mm in the extrusion direction, 400 mm in width and 380 mm in height. FIG. 4B shows a change in the load detected by the load cell with respect to the coke moving distance (a plurality of total values on each surface) when extruded.

  In FIG. 4B, (a) is the total load value (extrusion force) measured by the load cell 12 provided between the push-side block 5 and the front panel 10, and (b) is the receiving-side value. The total load value (reaction force) measured by the load cell 12 provided between the block 7 and the rear panel 11 is measured by the load cell 12 provided between the support 3 and the right side panel 9. (D) is the total load value (left wall force) measured by the load cell 12 provided between the support 2 and the left side panel 8 respectively. Show.

When the pushing force is applied to the coke cake 14 by the hydraulic cylinder (pushing means) 4, the air pressure of the air cylinder 6 is controlled so that the reaction force by the air cylinder (reaction force applying means) 6 becomes constant. By changing the set value of the reaction force to be constant (the pushing force also changes depending on the setting value of the reaction force), the evaluation of the pushing force assuming an arbitrary position in the furnace length direction in the actual coke oven carbonization chamber can be performed. It becomes possible.
Specifically, when the vicinity of the extruder ram is assumed, the reaction force by the air cylinder 6 is set large, and when the guide wheel side is assumed, the reaction force is set small.

In FIG. 4B, the difference between the extrusion force (a) and the reaction force (b) corresponds to the load required when the coke cake 14 passes through the protruding portion. There is a difference between the pushing force (i) and the reaction force (b) from the position where the coke cake 14 travels about 100 mm. At almost the same time, the force (c) and left The receiving power (d) of the entire wall has begun to increase.
As the travel distance further increases, the difference between the pushing force of (A) and the reaction force of (B) increases, and the receiving force of the entire right wall (C) and the receiving force of the entire left wall (D) further increase. Then, each value becomes maximum at a moving distance (470 to 500 mm) corresponding to a position where the coke cake 14 shown in (III) of FIG.

  Coke extrusion load measurement test as described above is performed by changing the shape of the protrusion, air cylinder reaction force, upper load load in various ways, and measuring the force, pushing force, and receiving force applied to the side wall in each case, By evaluating the extrusion load based on these measured values and reaction force values, as well as the load, extrusion is performed when irregularities of various shapes exist at various positions in the furnace length direction and furnace height direction of the coke oven. It is possible to quantitatively evaluate the impact on the power and furnace wall load.

  In the above embodiment, the load of the entire wall is measured as the total value (average value) of each load cell, and the partial load is not measured. In order to accurately estimate the critical load at which the furnace wall breaks, quantitatively determine the distribution of the local concentrated load that is estimated to occur in the irregularities during extrusion of the coke cake, and It is desirable to measure and evaluate continuously in time.

  Therefore, an embodiment will be described in which the distribution of the load at the time of extruding the coke cake and the change in the load at an arbitrary location on the furnace wall can be continuously measured.

  FIG. 6 shows an example in which a load distribution or load change can be continuously measured using a sheet-like pressure detecting means capable of detecting a load applied to the furnace wall as a surface. As a sheet-like pressure detecting means, A commercially available pressure sensor sheet 19 is used and disposed between the side panel 9 and the coke cake 14 so that the load distribution around the convex portion when the coke cake 14 is extruded and the temporal change of the load can be measured. It is a thing.

  The pressure sensor sheet 19 has a structure in which two resin sheets each having a row electrode and a column electrode are bonded together, and the intersection of the row and column of electrodes constitutes an individual pressure detection point (sensor cell). The electric resistance value of each sensor cell decreases according to the pressure applied to the sheet. When pressure is applied to the sensor sheet, the change in the electrical resistance value of the sensor cell is read at high speed through each electrode, and the read data is processed by dedicated measurement software, and the pressure distribution in the measurement area of the sensor sheet Or the time change of pressure at any position is output.

The surface of the pressure sensor sheet is protected by, for example, a plastic thin film. However, since the coke lump is damaged when strongly contacted, the protective sheet 20 is preferably inserted between the sensor sheet and the coke cake. More preferably, the side panel side 9 is also charged.
As the protective sheet 20, a commercially available cardboard (craft paper), a thin metal sheet, or the like can be used alone or in combination.

  When the protective sheet 20 is inserted, the force applied to the sensor sheet is attenuated by the protective sheet, so the measured load is not a true value. Therefore, the true load value is obtained by correcting the load measured by the load cell based on the load distribution obtained by the sensor sheet.

Next, an example in which a change in pressure is continuously recorded using such a pressure sensor sheet will be described.
A commercial product (manufactured by Nitta Co., Ltd.) was used for the pressure sensor sheet, which was set as shown in FIG. 6, and an extrusion test was performed using the same protrusions as in FIG.

  The sensor sheet used has a total of 1768 pressure detection points (sensor cells) of 17 x 17 mm per point, 52 points in the horizontal direction (coke extrusion direction) and 34 points in the height direction. It was. Further, as the protective sheet 22, a kraft paper having a thickness of about 0.5 mm and a metal sheet having a thickness of about 0.1 mm were used, which were interposed on both sides of the sensor sheet.

  As shown in FIG. 6, the pressure sensor sheet 19 is connected to a sensor control / data recording system 22 via a sensor connector 21 so as to record the measured values by the pressure sensor sheet at predetermined time intervals. In addition, the sensor control / data recording system 24 simultaneously records the load data measured by each load cell and the position data from the position detector during the coke cake extrusion, and these measurement data are recorded in the pressure sensor sheet. The analysis can be performed corresponding to the data of the load distribution on the projection surface by 1: 1.

  In FIGS. 7-1 (a) to 7-3 (e), during the coke cake extrusion, the distribution of the load of the pressure sensor sheet measured at the protruding surface disposed on the right wall is shown for each 100 mm of the movement distance of the coke cake 14. Shown in In FIG. 7, in order to clarify the load distribution and the positional relationship between the protrusions, the outlines of the protrusions (side arrows and front arrows) are superimposed on the sensor cell array of the sensor sheet.

  From FIGS. 7-1 (a) to 7-3 (e), the coke cake and the projecting surface are in local contact with the movement of the coke cake (extruded from the left side to the right side in the figure). It can be read that the point cloud on which the load acts also moves, that the contact area increases when the force received by the entire right wall increases.

An example of information obtained as a result of measurement using such a pressure sensor sheet will be described next.
FIG. 8 shows the relationship between the contact area between the projection surface and the coke cake, the total load acting on the projection surface, the contact pressure (= total load / contact area), and the distance of movement of the coke cake. From this figure, it can be seen that as the coke cake moves, the overall load increases, but the contact area also increases, and as a result, the contact area changes at a substantially constant value.

  FIG. 9 shows the relationship between the load acting on one sensor cell of the pressure sensor sheet and the moving distance of the coke cake. Here, the sensor cell A has a vertical cell number 20 and a horizontal cell number 30 in FIG. 7A, and the sensor cell B has a vertical cell number 20 and a horizontal cell in FIG. Number 38 is shown. From this figure, it is possible to grasp the load value acting on a specific position of the projection surface and its temporal change.

  In the embodiment using the pressure sensor sheet, as described above, the load acting on the side wall surface can be measured continuously in time within the measurement range of the sensor sheet. For this reason, it is possible to record and evaluate quantitatively and temporally the distribution of the local concentrated load that is estimated to occur in a portion having unevenness on the furnace wall. It is possible to estimate the extrusion load at the time of coke extrusion more accurately and to accurately estimate the limit load at which the furnace wall of the coke oven that has deteriorated has progressed. Troubles such as holes and furnace wall damage can be prevented more reliably.

  In the case of using the sheet-like pressure detecting means, the pressure sensor sheet 21 is arranged on the right wall in the extruding direction in the example of FIG. 6, but it is arranged on the left wall or on the left and right walls at the same time. It is also possible to simultaneously measure the distribution of loads acting on the wall. Further, the configuration (material, thickness, number of use, etc.) of the protective sheet 22 should be appropriately selected according to the strength of the load acting on the furnace wall. For example, when the load acting on the furnace wall is weak Apply a sheet with less thickness or use fewer sheets.

In the above embodiment, the case where the protrusion is directly formed as a protrusion has been described, but the protrusion can be used as a part of the recess as shown in FIG. Can be done.
Moreover, the side panel which forms a side wall can also change the friction state of a surface by changing a material and surface shape. As the bottom surface in contact with the coke, the surface of the base can be used, but in order to obtain a predetermined friction state, a bottom can be provided separately from the base.

  Furthermore, although the panels are used as the side walls and the front and rear walls, a thick block shape can be similarly implemented. When the front and rear panels are made of thick members, the push-side and receiving-side blocks 5 and 7 can be omitted, and the front and rear panels can be pushed directly by the cylinder heads of the cylinders 4 and 6.

It is a top view of the evaluation apparatus of the coke extrusion load which shows embodiment of this invention. It is a side view of the evaluation apparatus of the coke extrusion load which shows embodiment of this invention. It is a figure explaining the form of the processus | protrusion used by this invention. It is a figure for demonstrating embodiment of this invention, (a) is a schematic diagram during coke extrusion, (b) is an example of a measurement result. It is a figure explaining the other example of embodiment of this invention. It is a figure explaining the other example of embodiment of this invention which further used the sheet-like pressure detection means (pressure sensor sheet). It is a figure which shows an example of the measurement result of the load distribution by the pressure sensor sheet | seat in an initial state when a coke cake passes the slope of a processus | protrusion. Similarly, it is a figure which shows an example of the measurement result in the state in the middle. Similarly, it is a figure which shows an example of the measurement result in the state in which the coke cake got over the slope of a protrusion. It is a figure which shows the relationship between the movement distance of a coke cake measured by the apparatus which concerns on embodiment of this invention, the contact area of a projection surface and a coke cake, the whole load which acts on a projection surface, and a contact pressure. . It is a figure which shows the relationship between the moving distance of the coke cake measured with the apparatus which concerns on embodiment of this invention, and the load which acts per sensor cell. It is a figure which shows the measuring apparatus of the conventional coke extrusion load.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2, 3 Support body 4 Hydraulic cylinder 5 Push side block 6 Air cylinder 7 Receiving side block 8, 9 Side panel 10, 11 Front and rear panel 12 Load cell 13 Roller 14 Coke cake 15 Protrusion 16 Protrusion slope 17 Protrusion slope Horizontal plane 18 Position detector 19 Pressure sensor sheet 20 Protective sheet 21 Sensor connector 22 Sensor control / data recording system

Claims (7)

  When coke is disposed between the left and right side walls of the coke extrusion load evaluation device and the coke is extruded from one side to the other along the side wall, a protrusion is provided on at least one side wall, and the coke is extruded. When the coke is extruded while applying a reaction force, measure the force applied to the left and right side walls when the coke passes through the protrusion, the extrusion force during extrusion, and the force received when applying the reaction force. A method for evaluating a coke extrusion load, wherein the extrusion load is evaluated based on these measured values and the reaction force value.   When extruding coke, a load is loaded on the coke to extrude, and in addition to the measured value and the reaction force value, the load is further applied to evaluate the extrusion load. The evaluation method of coke extrusion load of 1.   Between the side wall and the coke, a sheet-like pressure detecting means capable of continuously measuring a change in force at an arbitrary position in the detection region is arranged, and by the sheet-like pressure detecting means, The distribution of force acting on the side wall and the change in force at an arbitrary position are measured continuously in time, and in addition to the measurement value and the reaction force value, the measurement result of the pressure detection means is further added to the extrusion. 3. The method for evaluating a coke extrusion load according to claim 1, wherein the load is evaluated. Left and right supports installed at intervals on the base,
Left and right side walls that are spaced apart between the left and right supports and that form a coke extrusion space inside;
Coke extrusion means disposed along the extrusion direction on a base on one side of the left and right supports;
A reaction force applying means that is disposed on a base on the other side of the left and right supports, and that exerts a reaction force against the extrusion force by the coke extrusion means during coke extrusion on the coke ;
Front and rear movable walls disposed in front and rear in the extrusion direction so as to surround the coke disposed between the left and right side walls, and having a width smaller than the interval between the left and right side walls;
A projection that is installed on a surface facing at least one of the side walls of the coke and has a slope that is continuous from the facing surface;
Load detecting means provided between the support and the side wall, between the pushing means and the movable wall, and between the reaction force applying means and the movable wall, respectively. Evaluation device for coke extrusion load.
  A sheet-like pressure detecting means capable of continuously measuring a change in force at an arbitrary position in the detection region is disposed between the inserted coke and the left and right side walls. The apparatus for evaluating a coke extrusion load according to claim 4.   6. The apparatus for evaluating a coke extrusion load according to claim 4, wherein the protrusion is installed on the side wall so that the position can be arbitrarily changed.   The apparatus for evaluating a coke extrusion load according to any one of claims 4 to 6, further comprising a load loaded on the coke.

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