JP6302677B2 - Furnace width measuring device and coke extruder - Google Patents

Description

  The present invention relates to a furnace width measuring device used when measuring the distance between opposing furnace walls in a high temperature furnace such as a coking chamber of a coke oven, and a coke extruder equipped with the furnace width measuring device. It is.

  In various furnaces such as coking chambers of coke ovens used at high temperatures, the furnace walls are made of refractory materials such as refractory bricks. This refractory is known to deteriorate due to heat load, chemical load, mechanical load and the like. For example, a part of the furnace wall may be altered by being held at a high temperature of 1000 ° C. or higher for a long time, or the furnace wall may be eroded by the volatile components of the object to be processed inserted into the furnace. The furnace wall (refractory material) is deteriorated because a part of it adheres to the furnace wall or the furnace wall is damaged by the impact when the workpiece is loaded. For this reason, in the operation of various furnaces, it is necessary to sufficiently manage the condition of the furnace wall.

Here, in the coke oven, for example, as shown in Patent Document 1, a plurality of carbonization chambers and combustion chambers are alternately arranged, and coal charged into the carbonization chamber is discharged from the combustion chamber. Coke is produced by carbonizing with heat. And the coke in a carbonization chamber is extruded by the extrusion ram of a coke extruder.
The carbonization chamber of the coke oven has a short distance between the opposing furnace walls (the furnace width is narrow) so that the coal can be efficiently carbonized by the heat of the combustion chamber. Moreover, since the extrusion ram of a coke extruder is inserted, the opposed furnace walls extend substantially in parallel.

  For this reason, in the coking chamber of the coke oven, it is possible to grasp the deterioration state of the furnace wall by measuring the distance between the facing furnace walls (furnace width). Thus, for example, Patent Documents 2 to 4 propose a furnace width measuring apparatus that can be inserted into a high-temperature carbonization chamber and can measure the furnace width. In addition, since the carbonization chamber of a coke oven is 1100-1200 degreeC and high temperature, the above-mentioned furnace width measuring apparatus needs to be equipped with the heat resistance which can be used in a high temperature environment.

The furnace width measuring apparatus described in Patent Document 2 has a structure in which a non-contact distance meter is accommodated in a water-cooled jacket, and is supplied with cooling water via a cooling pipe to the water-cooled jacket. The contact distance meter is cooling.
The furnace width measuring device described in Patent Document 3 has a structure in which a furnace width distance meter is accommodated in an endothermic box composed of a jacket containing liquid. In addition, handling is improved by adopting a configuration in which the data of the furnace width distance meter in the endothermic box is wirelessly transmitted to the outside.

  A furnace width measuring apparatus described in Patent Document 4 includes a sensor unit in which a laser displacement meter is disposed on the heat absorption surface side of the Peltier element and a cooling fin is disposed on the heat dissipation surface side of the Peltier element, and a housing that accommodates the sensor unit. It is configured with a body. In the furnace width measuring apparatus having this configuration, the laser displacement meter is cooled by supplying cooling air to the space between the casing and the unit and the space where the cooling fins are arranged and operating the Peltier element. ing.

JP 2009-249453 A JP 62-293112 A JP 2002-213922 A JP 2007-232471 A

  By the way, recently, the life of the coke oven has been extended, and the period of use of the refractory in the coking chamber has also become longer. In addition, from the viewpoint of reducing manufacturing costs, the use of low-grade coal has been promoted, and the chemical load on the furnace wall tends to increase due to the impurity components of the coal. For this reason, it is necessary to sufficiently manage the deterioration state of the refractory on the furnace wall by measuring the furnace width of the carbonization chamber, as compared with the prior art.

Here, in the furnace width measuring apparatus described in Patent Document 2, since the cooling pipe is connected, the furnace width measuring apparatus becomes complicated and large, and it is difficult to install the apparatus in a coke extruder or the like. Therefore, there is a possibility that the insertion operation into the carbonization chamber cannot be easily performed.
Further, in the furnace width measuring device described in Patent Document 3, when the temperature of the liquid in the heat absorption box rises, the furnace width distance meter is not sufficiently cooled. After measurement, when measuring the furnace width of another carbonization chamber, it is necessary to sufficiently reduce the temperature of the liquid in the endothermic box, and the measurement of the furnace width of multiple carbonization chambers cannot be performed efficiently. It was.

  Furthermore, in the furnace width measuring apparatus described in Patent Document 4, the cooling air is supplied to the space between the housing and the unit and the space where the cooling fins are arranged. It was necessary to increase the pump capacity to supply the cooling air. Further, in order to operate the Peltier element and the above-described pump, it is necessary to supply a large amount of power. For this reason, the furnace width measuring apparatus becomes complicated and large, and it becomes difficult to install the furnace width measuring apparatus in a coke extruder or the like, and there is a possibility that the inserting operation into the carbonization chamber cannot be easily performed.

  The present invention has been made in view of the above-described situation, has a relatively simple configuration, can be easily inserted into a high-temperature furnace, and is stable by suppressing the temperature rise of the distance meter. An object of the present invention is to provide a furnace width measuring apparatus capable of measuring the furnace width and a coke extruder equipped with the furnace width measuring apparatus.

In order to solve the above problems, a furnace width measuring apparatus according to the present invention is a furnace width measuring apparatus that is inserted into a furnace and measures a distance between opposed furnace walls, and measures the distance between the furnace walls. A distance meter, an inner container that accommodates the distance meter, an outer container that accommodates the inner container, and a cooling gas supply means that supplies a cooling gas toward the inside of the inner container. A gas flow path is provided between the container and the outer container, and the inner container is provided with an exhaust hole communicating with the gas flow path, and is supplied to the inside of the inner container by the cooling gas supply means. the cooling gas is supplied to the gas passage through the exhaust hole, said being with configurations discharged through the gas passage to the outside of the outer container, said inner container A heat insulating layer is provided between the outer container and the outer container. It is characterized in that the gas flow path to the heat insulating layer is provided.

In the furnace width measuring apparatus having this configuration, the cooling gas is supplied to the inside of the inner container, and the cooling gas is passed through the gas flow path provided between the inner container and the outer container to be outside the outer container. Since it is configured to discharge, the inner container can be cooled from the outside, and it becomes possible to suppress the temperature rise of the distance meter housed inside the inner container, and it is inserted into a high-temperature furnace to reduce the furnace width. Can be measured.
Further, since the cooling gas supplied to the inside of the inner container is passed through the gas flow path provided between the inner container and the outer container, the flow rate of the cooling gas supplied by the cooling gas supply means can be suppressed. it can. In addition, the structure is relatively simple and can be easily inserted into the furnace.

In addition, since a heat insulating layer is provided between the inner container and the outer container, and the gas flow path is provided in the heat insulating layer, the heat from the outside of the outer container is absorbed by the heat insulating layer. It is possible to suppress transmission to. In addition, a gas flow path can be formed relatively easily between the inner container and the outer container.

Moreover, in the furnace width measuring apparatus of this invention, the said gas flow path is good also as a structure currently formed in the surface facing the said furnace wall at least.
In this case, by providing a gas flow path on the surface facing the furnace wall, it is possible to suppress the transmission of radiant heat from the furnace wall to the inside of the inner container, and the temperature of the distance meter accommodated in the inner container. The rise can be suppressed. This is particularly effective when the furnace width is narrow and the distance between the outer vessel and the furnace wall is short, such as a carbonization chamber of a coke oven.

  The coke extruder of the present invention is a coke extruder that extrudes coke accommodated in a carbonization chamber of a coke oven, and the above-mentioned furnace width measuring device is installed in an extrusion ram inserted into the carbonization chamber. It is characterized by.

  According to the coke extruder of this configuration, when extruding coke in the carbonization chamber, the furnace width can be measured by the above-described furnace width measuring device, and the deterioration state of the furnace wall can be accurately evaluated. . In addition, since the furnace width measuring device has a relatively simple structure, even if it is installed in a coke extruder that is moved and used, stable operation can be achieved without hindering the operation of the coke extruder. Can be implemented.

  As described above, according to the present invention, the furnace width is relatively simple and can be easily inserted into a high-temperature furnace, and the furnace width can be stably measured by suppressing the temperature rise of the distance meter. It is possible to provide a furnace width measuring apparatus capable of performing the above and a coke extruder equipped with the furnace width measuring apparatus.

It is a schematic explanatory drawing of the coke oven in which the furnace width measuring apparatus and coke extruder which are one Embodiment of this invention are used. It is side surface explanatory drawing of the carbonization chamber and coke extruder in the coke oven shown in FIG. It is XX sectional drawing in FIG. It is a partially expanded explanatory view of the ram head periphery of the coke extruder which is one Embodiment of this invention. It is a section explanatory view of the furnace width measuring device which is one embodiment of the present invention. FIG. 6 is a YY cross-sectional explanatory diagram in FIG. 5. FIG. 6 is an explanatory diagram of a ZZ cross section in FIG. 5.

Hereinafter, a furnace width measuring apparatus and a coke extruder according to an embodiment of the present invention will be described with reference to the accompanying drawings. In addition, this invention is not limited to the following embodiment.
The furnace width measuring device 50 according to the present embodiment is inserted into the carbonizing chamber 10 of the coke oven 1 and measures the distance (furnace width) between the opposing furnace walls 11, 11 of the carbonizing chamber 10. Moreover, the coke extruder 40 which is this embodiment is provided with the above-mentioned furnace width measuring device 50.

First, the coke oven 1 in which the furnace width measuring device 50 and the coke extruder 40 according to the present embodiment are used will be described.
As shown in FIG. 1, the coke oven 1 includes a plurality of carbonization chambers 10 arranged in parallel, and a combustion chamber 13 is disposed between two adjacent carbonization chambers 10 as shown in FIG. 3. Yes.
As shown in FIG. 1, the carbonization chamber 10 extends in one direction (left-right direction in FIG. 1) when viewed from above, a rising pipe 16 is disposed at one end, and a stand pipe 17 is disposed at the other end. It is arranged. A plurality of insertion holes 18 are formed between the rising pipe 16 and the stand pipe 17.

  A first rail 21 is disposed above the plurality of carbonization chambers 10 arranged in parallel so as to extend in the parallel direction of the carbonization chambers 10. A coal charging vehicle 31 is placed on the first rail 21. The coal charging vehicle 31 is configured to move along the first rail 21. The coal charging vehicle 31 includes a jumper pipe 32 connected to the stand pipe 17 of the carbonization chamber 10. As shown in FIG. 1, this jumper pipe 32 is configured to connect a carbonization chamber 10 (charging furnace 10a) for charging coal and a carbonizing chamber 10 (adjacent kiln 10b) adjacent to the charging furnace 10a. Has been.

  Further, the second rail 22 is arranged on one end side (left side in FIG. 1) in the extending direction of the carbonizing chamber 10 so as to extend in the parallel direction of the carbonizing chamber 10. A coke extruder 40 according to the present embodiment is placed on the second rail 22. The coke extruder 40 is configured to move along the second rail 22.

  Further, the third rail 23 and the fourth rail 24 are arranged on the other end side in the extending direction of the carbonizing chamber 10 (on the right side in FIG. 1) so as to extend in the parallel direction of the carbonizing chamber 10. Yes. A coke guide wheel 35 is placed on the third rail 23, and a fire extinguishing wheel 37 is placed on the fourth rail 24. The coke guide wheel 35 is configured to move along the third rail 23, and the fire extinguishing vehicle 37 is configured to move along the fourth rail 24.

Next, the coke extruder 40 which is this embodiment is demonstrated.
As shown in FIG. 2, the coke extruder 40 according to this embodiment includes a leg portion 41 placed on the second rail 22, a pedestal portion 42, and an extrusion ram 43 inserted into the carbonization chamber 10. Moving means (not shown) for moving the extrusion ram 43 back and forth. The extrusion ram 43 includes a ram beam 44 and a ram head 45 provided at the tip of the ram beam 44.

In the present embodiment, as shown in FIG. 4, a guide column 46 is erected on the distal end side of the ram beam 44, and the guide column 46 and the ram head 45 are connected by a ram guide 47 extending in parallel with the ram beam 44. Has been. A shielding plate 48 is provided at a connection portion of the ram guide 47 with the ram head 45.
And the furnace width measuring apparatus 50 which is this embodiment is installed in the front end side of the ram beam 44. FIG. In the present embodiment, as shown in FIG. 4, the furnace width measuring device 50 is disposed between the guide column 46 and the ram head 45, and the ram guide 47 is disposed above the furnace width measuring device 50.

Next, the furnace width measuring apparatus 50 which is this embodiment is demonstrated.
This furnace width measuring device 50 is inserted into the carbonization chamber 10 together with the extrusion ram 43, and, as shown in FIG. 3, a pair of furnace walls 11, 11 facing the carbonization chamber 10 (furnace walls located on the combustion chamber 13 side). ) Is measured.
As shown in FIG. 5, the furnace width measuring apparatus 50 according to the present embodiment supplies an inner container 51, an outer container 55 that houses the inner container 51, and cooling air (air) toward the inside of the inner container 51. And an air supply unit 59 to be supplied.
A heat insulating layer 61 made of a heat insulating material is provided between the inner container 51 and the outer container 55. Windows 58 are formed on the surfaces of the inner vessel 51, the outer vessel 55, and the heat insulating layer 61 that face the pair of furnace walls 11, 11 facing the carbonization chamber 10 (furnace walls located on the combustion chamber 13 side). Has been.

  A pair of laser rangefinders 71, 71 are arranged inside the inner vessel 51, and face each of a pair of furnace walls 11, 11 (furnace walls located on the combustion chamber 13 side) facing the carbonization chamber 10. The laser beam L is irradiated to measure the distance from the furnace wall 11. More specifically, a reflection mirror 72 that reflects the laser light L from the laser distance meter 71 and controls the traveling direction of the laser light L is disposed inside the inner container 51, and the laser light L passes through the window 58. It is comprised so that it may irradiate toward the exterior of the outer side container 55 via.

  Further, a cooler 73 is disposed inside the inner container 51, and air is supplied from the air supply unit 59 to the cooler 73 via the three-way valve 74. The cooler 73 separates the supplied air into cold air W1 and hot air W2. The cool air W1 from the cooler 73 is used for cooling the inner container 51, and the hot air W2 from the cooler 73 is used as purge air for the window 58.

And the gas flow path 64 is provided in the surface facing the furnace wall 11 among the heat insulation layers 61 arrange | positioned between the inner side container 51 and the outer side container 55. As shown in FIG.
In the present embodiment, as shown in FIGS. 5 to 7, an exhaust hole 52 is provided above the inner container 51, and communicates with the exhaust hole 52 and above the furnace wall 11 above the inner container 51. A duct portion 65 extending along the opposing surface is provided.

One end of the duct portion 65 (the right end in FIGS. 6 and 7) is provided with a communication path 66 extending in the vertical direction, and the duct portion 65 and the gas flow path 64 communicate with each other via the connection path 66. Has been.
As shown in FIGS. 5 to 7, the air that has cooled the inside of the inner container 51 is exhausted from the exhaust hole 52 to the duct portion 65, and is supplied to the gas flow path 64 through the duct portion 65 and the communication path 66. The gas passage 64 passes through the window 58 and is discharged to the outside of the outer container 55.

Next, an embodiment of a method for operating the coke oven 1 configured as described above will be described.
First, coal is charged into the carbonization chamber 10 (charging furnace 10a) of the coke oven 1. The coal charging vehicle 31 is moved to the top of the charging furnace 10a, the lids of the stand pipes 17 of the charging furnace 10a and the adjacent kiln 10b are opened, the jumper pipe 32 is connected, and each of the charging furnaces 10a is connected. The lid of the charging hole 18 is opened, and coal is charged into the charging furnace 10a.

  After the coal charging is completed, the coal is carbonized in the carbonization chamber 10. In the present embodiment, as shown in FIG. 3, a pair of furnace walls of the carbonization chamber 10 is used to efficiently transfer heat from the combustion chambers 13 provided between the parallel carbonization chambers 10 to the coal. 11, 11 (the furnace wall located on the combustion chamber 13 side) is relatively short. That is, the furnace width of the carbonization chamber 10 is narrowed.

  When the dry distillation of coal is completed, the coke C in the carbonization chamber 10 is discharged using the coke extruder 40. As shown in FIG. 1, the coke extruder 40 on the second rail 22 is moved to one end side of the carbonizing chamber 10 c that discharges the coke C. On the other hand, the coke guide wheel 35 on the third rail 23 and the fire extinguisher 37 on the fourth rail 24 are moved to the other end side of the carbonizing chamber 10c for discharging the coke C.

Then, as shown in FIGS. 2 and 3, the extrusion ram 43 of the coke extruder 40 is inserted from one end side of the carbonization chamber 10 (left side in FIGS. 2 and 3), and the coke C in the carbonization chamber 10 is carbonized. It discharges | emits to the fire extinguisher 37 through the coke guide wheel 35 arrange | positioned at the other end side of the chamber 10. FIG.
At this time, in this embodiment, the furnace width measuring device 50 is inserted into the carbonization chamber 10 together with the extrusion ram 43.

In the furnace width measuring device 50 inserted into the carbonization chamber 10, the distance between the opposing pair of furnace walls 11, 11 (furnace wall on the combustion chamber 13 side) is measured by a pair of laser distance meters 71, 71, respectively. Then, the furnace width of the carbonization chamber 10 is calculated.
At this time, the inside of the carbonization chamber 10 is set to a high temperature of 1100 to 1200 ° C. Therefore, in the present embodiment, air is supplied from the air supply unit 59 to the cooler 73, and the inside of the inner container 51 is cooled by the cold air W1 from the cooler 73, and the air that has cooled the inside of the inner container 51 is The inner container 51 is cooled from the outside by being supplied from the exhaust hole 52 to the gas flow path 64 via the duct portion 65 and the communication path 66, and passing through the gas flow path 64. The laser distance meter 71 in 51 is protected from heat.

  In the furnace width measuring apparatus 50 according to the present embodiment configured as described above, cooling air (air) is supplied to the inside of the inner container 51 by the air supply unit 59, and the inner container 51 is used using this air. The inside of the inner container 51 is cooled and the air that has cooled the inside of the inner container 51 is supplied to the gas flow path 64 through the exhaust hole 52, the duct portion 65, and the communication path 66, and passes through the gas flow path 64. Therefore, the inner container 51 can be cooled from the outside by the air passing through the gas flow path 64, and the temperature rise of the laser rangefinder 71 accommodated in the inner container 51 can be suppressed, 1100 to 1200 ° C. The furnace width can be measured with high accuracy even if it is inserted into the high-temperature carbonization chamber 10.

In addition, since the air supplied to the inside of the inner container 51 is passed through the gas flow path 64 provided between the inner container 51 and the outer container 55, the cooling air supplied by the air supply unit 59 ( The flow rate of air) can be suppressed.
Furthermore, since the structure is relatively simple, it can be installed in the coke extruder 40 and inserted into the carbonization chamber 10 having a narrow furnace width relatively easily, and the furnace width can be measured efficiently. can do.

  Furthermore, in the furnace width measuring apparatus 50 according to the present embodiment, the heat insulating layer 61 is provided between the inner vessel 51 and the outer vessel 55, and the gas flow path 64 is provided in the heat insulating layer 61. The layer 61 can suppress heat from the outside of the outer container 55 from being transmitted to the inner container 51. Further, the gas flow path 64 can be formed relatively easily between the inner container 51 and the outer container 55.

  In the furnace width measuring apparatus 50 according to the present embodiment, the gas flow path 64 is formed on the surface facing the furnace wall 11 on the combustion chamber 13 side, so that the radiant heat from the furnace wall 11 is generated by the inner container 51. It is possible to suppress the transmission to the inside of the inner container 51, and it is possible to suppress the temperature rise of the laser rangefinder 71 accommodated inside the inner container 51.

  Furthermore, the furnace width measuring apparatus 50 according to the present embodiment has a cooler 73 that separates the air supplied from the air supply unit 59 into the cold air W1 and the hot air W2 inside the inner vessel 51. Since the inside of the inner container 51 is cooled by the cold air W <b> 1 from 73, the laser rangefinder 71 can be efficiently cooled. In addition, since the hot air W2 from the cooler 73 is used as purge air for the window portion 58, it is possible to accurately measure the furnace width by the laser distance meter 71 while suppressing dust and the like from adhering to the window portion 58. The supplied air can be used effectively.

  Moreover, in the coke extruder 40 which is this embodiment, since the above-mentioned furnace width measuring apparatus 50 is installed in the extrusion ram 43 inserted in the carbonization chamber 10, the coke C in the carbonization chamber 10 is extruded. In this case, the furnace width can be measured by the above-described furnace width measuring device 50, and the deterioration state of the furnace wall 11 can be accurately evaluated. Further, since the furnace width measuring device 50 has a relatively simple structure, even if it is installed in a coke extruder 40 that is used by moving to each carbonization chamber 10 along the second rail 22, the coke is measured. The operation can be stably performed without hindering the operation of the extruder 40.

As mentioned above, although the furnace width measuring apparatus and the coke extruder which are the embodiments of the present invention have been described, the present invention is not limited thereto, and can be appropriately changed without departing from the technical idea of the present invention. .
For example, the arrangement of the carbonization chamber, the coal charging vehicle, the coke guide vehicle, the structure of the fire extinguisher, etc. are not limited to those exemplified in the present embodiment.

Moreover, although demonstrated as what used air as a gas for cooling, it is not limited to this, You may use another gas.
Furthermore, in this embodiment, although it demonstrated as what has arrange | positioned the cooler inside the inner side container, it is not limited to this, You may use the gas for cooling as it is, and it cools outside the inner side container. Used gas may be used.

Further, the configurations of the exhaust hole, the duct portion, the communication path, and the gas flow path are not limited to the present embodiment, and may be other configurations.
Furthermore, in this embodiment, although demonstrated as what uses a laser distance meter, it is not limited to this, You may use the distance meter of another structure.
Moreover, although this embodiment demonstrated as what makes a coke oven object, it is not limited to this, You may apply to the furnace width measurement of the various furnaces of another use.

DESCRIPTION OF SYMBOLS 1 Coke oven 10 Coking chamber 40 Coke extruder 43 Extrusion ram 50 Furnace width measuring device 51 Inner vessel 52 Exhaust hole 55 Outer vessel 59 Air supply part (cooling gas supply means)
61 Heat insulation layer 64 Gas flow path 71 Laser distance meter (distance meter)

Claims (3)

A furnace width measuring device that is inserted into a furnace and measures the distance between opposing furnace walls,
Distance meter for measuring the distance between the furnace walls, an inner container for accommodating the distance meter, an outer container for accommodating the inner container, and a cooling gas supply means for supplying a cooling gas toward the inside of the inner container And having
A gas flow path is provided between the inner container and the outer container, and the inner container is provided with an exhaust hole communicating with the gas flow path.
The cooling gas supplied to the inside of the inner container by the cooling gas supply means is supplied to the gas flow path through the exhaust hole and passes through the gas flow path to the outside of the outer container. It is said that it is configured to be discharged ,
A furnace width measuring apparatus , wherein a heat insulating layer is provided between the inner container and the outer container, and the gas flow path is provided in the heat insulating layer . The furnace width measuring device according to claim 1, wherein the gas flow path is formed on at least a surface facing the furnace wall. A coke extruder for extruding coke contained in a carbonization chamber of a coke oven,
A coke extruder having the furnace width measuring device according to claim 1 or 2 installed in an extrusion ram inserted into the carbonization chamber.

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