JP2000008044A - Heat-insulation apparatus for hot-mending of coke oven and its installation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-insulation apparatus easily installable in a carbonization chamber in a short time without using a large-sized heavy equipment and provide its installation method. SOLUTION: This heat-insulation apparatus is a combination of a heat- insulation box 21 divided into several blocks in the introducing direction of the box into a carbonization chamber 31 and having wheels 24 under the block to enable the transportation by human power, a connecting part having a protrusion and a recess to enable easy engagement and guide plates 1-1, 1-2 divided to small pieces and having guide parts 3, 8 to guide the wheels 24 of each heat-insulation box 21. The heat-insulation boxes are successively introduced into the bottom of the carbonization chamber 31, connected with each other by fitting the protrusion and the recess of the divided guide plates 1-1, 1-2, successively pushed into the carbonization chamber 31 by human power and connected with each other by guiding the wheels 24 under the heat-insulation box with the guiding parts 3, 8 of the guide plate 1-1, 1-2 to enable the easy and quick installation of the heat-insulation apparatus in the carbonization chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating device used for hot repair of a furnace wall of a coking chamber of a room furnace type coke oven and a method of installing the same.

[0002]

2. Description of the Related Art Most coke ovens are constructed of refractory bricks. In particular, the furnace wall bricks in a coking chamber are heated by an adjacent combustion chamber, and the combustion chamber side is always exposed to a high temperature of 1100 to 1300 ° C. ing. On the other hand, the furnace wall brick on the carbonization chamber side is repeatedly cooled and quenched at a high temperature by charging coal at normal temperature. Also, when extruding coke that has been carbonized,
The operation is repeated under severe conditions such as friction and side pressure of red hot coke, and adhesion and separation of carbon generated during carbonization.

[0003] For this reason, furnace wall bricks in the coking chamber may be damaged, cracked, chipped, or the like due to long-term use. Therefore, the furnace wall bricks are regularly inspected, and the damaged furnace wall bricks are hot-replaced and partially repaired. During hot repair, if the temperature of the adjacent combustion chamber is lowered too much, cracks may occur in the furnace wall bricks and joints. In order to minimize the thermal change of the furnace wall bricks and joints during hot repair, maintain the brick temperature at the non-repair site as high as possible, and make sure that the repair section is suitable for the construction of workers. It is necessary to cool down as much as possible and secure the working environment.

Conventionally, in order to hot-replace and repair furnace wall bricks in a coking chamber, a method has been adopted in which a heat insulating device is installed in the coking chamber to replace the brick. As a heat insulating device installed in the carbonization chamber, for example, a vertical duct is attached downward at one end of a ceiling duct having a predetermined length in the horizontal direction, and the suction position can be adjusted up and down on the inner surface side of the vertical duct A plurality of suction holes are provided, and a vertical reinforcing member hanging down from the ceiling duct at an appropriate interval so as to be detachable, and a horizontal reinforcing member connecting the lower ends of the vertical duct and the vertical reinforcing member are attached, and the ceiling and the vertical are attached. There has been proposed a heat insulating box in which a rectangular frame is formed by ducts and vertical and horizontal reinforcing members, and a heat insulating material is spread on one entire surface of the rectangular frame (Japanese Patent Laid-Open No. 6-41538).

As a method of installing a heat insulating device in a carbonization chamber, for example, as shown in FIG.
A pulley 93 is installed near the end of the work deck below the kiln mouth on the extruder side or the coke guide car side of the coking chamber 92 near the coking chamber, and the bottom of the heat insulating box 94 arranged on the work deck on the coke guide car side. Is wound around the pulley 93 and the winch 96 installed outside the furnace, and the cable 95 is wound around the winch 96, so that the heat insulating box 94 is pulled by the tension of the cable 95 into the carbonization chamber 92.
(Japanese Patent Laid-Open Publication No. Hei 8-104875) has been proposed.

As another method, as shown in FIG. 10, a temporary gantry 103 is installed on the extruder side of a coke oven 101 at the same level as the carbonization chamber 102 floor, and a roller conveyor 104 is placed on the gantry 103. A heat-insulating box 105 having a rectangular frame formed by a ceiling and a vertical duct and vertical and horizontal reinforcing members is placed through the heat-insulating box 10, and a chain 106 introduced from the coke guide vehicle side of the carbonization chamber 102 is placed in the heat-insulating box 10.
5 and the chain 106 is pulled toward the guide vehicle to introduce the heat-insulating box 105 to a predetermined position in the coking chamber 102. Then, the introduced heat-insulating box 105 is provided on the ceiling of the coking chamber 102. The vertical reinforcing member and the horizontal reinforcing member are suspended in the heat insulating box 1 while being suspended from the charging hole 107.
05 and carried out of the carbonization chamber to suspend and install the ceiling and vertical duct at a predetermined height (Japanese Patent Laid-Open No. 6-4)
No. 1538) has been proposed.

[0007]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 6-415.
Since the heat insulation box disclosed in Japanese Patent Publication No. 38 is a large one-piece heat insulation box, a large heavy machine such as a tow truck is required to place the heat insulation box on a roller conveyor on a temporary gantry at the same level as the carbonization chamber floor. There is a disadvantage that there is.

Further, Japanese Patent Application Laid-Open No. 6-41538 described above,
In the method disclosed in Japanese Patent Application Laid-Open No. H08-104875, a heat insulating box such as a temporary mounting base on which a winch or a roller conveyor is mounted on a running rail of an extruder or a coke guide car is used for installing a large integral heat insulating box. It is necessary to install a charging device. For this reason, the work for charging the heat insulation box becomes large, and the heat insulation box charging device hinders the running of the extruder and the coke guide car, and it is necessary to change the kiln discharge schedule of the coke oven. Has disadvantages.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to provide a heat insulating device which can be simply and quickly installed in a carbonization chamber and a method of installing the same.

[0010]

SUMMARY OF THE INVENTION An insulation apparatus for hot repair of a coke oven according to the present invention comprises an insulation box divided into several blocks in the direction of charging into a carbonization chamber so as to be portable by human power. A combination of a small divided guide plate that guides the heat-insulating box into the carbonization chamber. Wheels are provided at the bottom of each heat-insulating box. Has a guide portion for guiding the wheels.

[0011] The heat insulation box of the present invention is divided into several blocks in the direction of charging into the carbonization chamber so that it can be carried by human power. There is no need to use a machine. In addition, the resistance at the time of mounting the heat insulating box is reduced by providing wheels at the bottom of each heat insulating box, and can be pushed by human power. In addition, the small divided guide plate has a guide part that guides the wheels of each heat insulation box straight, and the connection part has an uneven structure that is easy to fit, so that each guide plate can be easily installed and installed in the carbonization chamber In addition, since the connection of each guide plate is the fitting of the concave and convex structure, the connection is easy and no displacement occurs.

A method for installing a heat repair apparatus for hot repair of a coke oven according to the present invention is as follows. After the connection, the wheels of the insulation box divided into several blocks in the direction of loading into the carbonization chamber are guided by the guide portions of each guide plate so as to be portable by human power, and the heat insulation box is sequentially carbonized manually. Push it into the room and connect.

Therefore, in the present invention, by dividing the heat-insulating box into blocks which can be carried by human power, the wheels of the heat-insulating box can be guided by the guide portions of the respective guide plates without installing a large temporary base. It is possible to insert the heat insulation box into the carbonization chamber manually. In addition, since the installation time of the heat insulation box can be shortened and the installation can be performed by using the kiln-interruption time, there is no need to change the operation schedule.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The heat-insulating box of the present invention can be carried by hand so that it is not necessary to use a special large transporter such as a wrecker in carrying or installing in a carbonization chamber. Divide into several blocks in the direction of loading. For example, if the length of the heat-insulating box in the loading direction is divided to be smaller than the width of the work deck in front of the kiln entrance, the wheels provided at the bottom of the heat-insulating box can be attached to each guide plate without installing a large temporary base. While being guided by the guide portion, it is possible to insert the heat-insulating box into the carbonization chamber manually.

In the structure of each of the heat insulating boxes of the present invention, the connecting portion of the rectangular frame portion and the entire surface excluding the repair work portion are covered with a heat insulating material such as gypsum board. The wheels of each heat-insulating box are provided at the front and rear bottoms so as to be guided by a guide portion such as a guide rail of a guide plate. For loading of each insulation box, lift the insulation box by human power, put the wheels of the insulation box on the guide part of the installed guide plate,
Insert them sequentially while pushing them in manually.

The wheels of each heat insulation box can be replaced with a sled. When a sled is installed at the bottom of each heat insulation box, the connection of the concavo-convex structure of the guide plate is formed as a joint or tenon connection, thereby preventing the connection of each guide plate from being detached. The guide portion of the guide plate is preferably two guide rails each so that the sled is guided between the guide rails. Further, if guide rollers are provided at predetermined intervals between the two guide rails of each guide portion, it becomes easier to load each of the heat insulating boxes, each of which has a sled provided below, into the carbonization chamber.

The guide plate for charging the heat-insulating box has a guide portion such as a guide rail for guiding the heat-insulating box straight. In addition, the guide plate itself is divided into small parts in order to facilitate its installation into the carbonization chamber. The connecting portion of each guide plate has an uneven structure to facilitate connection. For example, as shown in FIG. 6, a joint having a concave portion 61, a groove and a convex portion 62, a mortise joint with a concave portion with a mortise and a convex portion with a tenon, a concave portion with a V-shape and a convex portion with a reverse shape. A V-shaped combination, as shown in FIG. 7, a concave portion 71 is a W-shaped combination and a convex portion 72 is an inverted W-shaped combination, and front and rear guide plates 73, 7 are provided.
3 is provided with a hole 74 for inserting a scat-like connecting metal fitting, and a concavo-convex connection such as a combination of an M-shaped concave portion and an inverted M-shaped convex portion, or the like. Of these, dovetail joints and mortise joints do not occur after connecting each guide plate,
This is the recommended connection structure. In addition, since the concave-convex coupling is only to join the concave and convex portions of each guide plate, the connection is easy. In this case, the guide portions such as the guide rails are formed in accordance with the concave-convex structure of the connection portion, and when the respective guide plates are connected, the guide portions such as the guide rails are connected like one rail.

Since it is desired that the guide plate does not deform as much as possible due to the high heat in the carbonization chamber, it is preferable that the guide plate be made of a refractory material such as a castable which has relatively small thermal expansion and deformation.
Further, it is necessary to attach a stopper to the innermost guide plate so that the heat insulation box is not pushed too far into the carbonization chamber. Furthermore, in the case of a guide plate with an uneven connection, holes for connecting metal fittings are installed before and after each guide plate, and a caulk-shaped connecting metal fitting is inserted into a hole of the front and rear guide plates, thereby taking out from the carbonization chamber. And the generation of gaps between the guide plates when the heat-insulating box is pushed in can be prevented. In addition, when the connection fitting is not used, it is desirable to provide a hole for hooking a hook bar on each guide plate in order to facilitate removal from the carbonization chamber after completion of hot repair.

As shown in FIG. 8, the method of installing the heat insulating apparatus of the present invention is such that a concave portion and a convex portion of the connection portion of the concave-convex structure of the guide plate 83 are fitted to the bottom portion 82 of the carbonization chamber 81 requiring repair. Connected and installed, the length exceeds the repair part. Each guide plate 83 is connected straight by fitting and connecting the concave and convex portions of the concave-convex structure, and the guide portion 84 such as a guide rail becomes like two rails. In this case, the guide portion 84 of the innermost guide plate 83
Use the one with a stopper attached to the tip.

Next, the charging of the heat-insulating box 85 is performed by the front wheels 8 of the heat-insulating box 85 having only the rear connection portion opened.
6 into a guide portion 84 such as a guide rail of a guide plate 83.
After that, the heat insulation box 85 is pushed in, and the rear wheel 86 is placed on a guide portion 84 such as a guide rail of a guide plate. Next, a heat insulating box 8 with front and rear connection parts opened.
5 is connected to the guide portion 84 of the guide plate 83.
And then repeatedly presses the heat-insulating box 85 in order. The front-side wheel 86 of the heat-insulating box 85 is inserted into the stopper of the guide portion 84 of the rearmost guide plate 83.
Abut. As a result, a heat insulating device is formed by the heat insulating box 85 which is hermetically connected to a length from the kiln opening to the length exceeding the repairing portion. After that, it enters into the heat insulation device formed by each heat insulation box 85 from the kiln opening, and the space between each heat insulation box 85 is connected and sealed by a connection fitting. In addition, 87 is a work deck, and 88 is an extruder.

When the heat insulation box is inserted and the installation of the heat insulation device is completed, the damaged portion of the furnace wall of the coking chamber is repaired. Removal of the heat insulation device after repair of the damaged part of the coking chamber furnace wall is completed involves repeatedly pulling out and disconnecting each heat insulation box, and removing each heat insulation box. Next, when the connecting metal is not used, the guide plate is pulled out of the carbonization chamber in order by hooking the hook at the tip of the hook into the hole provided on the guide plate for hooking the hook. In this case, since each guide plate is merely connected by fitting the concave and convex portions of the concave and convex structure, the guide plates can be easily separated. When connecting metal fittings are used, the guide plates may be sequentially pulled out in any manner, and the connecting metal fittings may be removed in front of the kiln.

[0022]

EXAMPLE 1 An example of a heat insulating apparatus for hot repair of a coke oven and an installation method thereof according to the present invention are described as follows. The concave and convex structure of a connecting portion of a guide plate is a V-shaped concave portion and an inverted V-shaped convex portion. FIG.
This will be described with reference to FIG. The heat insulation device of the present invention is shown in FIG.
And a heat insulating box divided into blocks as shown in FIG. The installation method of the heat insulating device of the present invention is performed by the method shown in FIG.

As shown in FIG. 1, the guide plate 1-1, which is located at the innermost side of the furnace and is divided into small portions, has a V-shaped concave portion 2 on the kiln opening side on the short side of the rectangle. Further, two guide portions 3 are provided on the upper surface in parallel with the long side, and a V-shaped concave portion 2 is provided.
A stopper 4 is provided at the tip of the guide portion 3 on the opposite side to the above. A hole 5 for inserting a fitting for connecting the guide plate 1-2 to be connected is provided in a portion located inside the furnace from the center of the V-shaped concave portion 2.

The guide plate 1-2 connected to the guide plate 1-1 and subsequent to the guide plate 1-2 has an inverted V-shaped convex portion 6 at the tip inside the furnace.
Have a V-shaped recess 7 at the rear end. Further, two guide portions 8 are provided on the upper surface in parallel with the long side, and a portion located on the kiln opening side from the center of the inverted V-shaped convex portion 6 and a furnace inside from the center of the V-shaped concave portion 7. Are provided with holes 9 and 10 for connecting fittings for connecting between the guide plates 1-1 and 1-2 to be connected.

When the guide plate 1-2 is connected by fitting the inverted V-shaped convex portion 6 of the guide plate 1-2 to the V-shaped concave portion 2 of the guide plate 1-1 at the furnace bottom of the carbonization chamber, The two guide portions 3 and 8 form a double guide rail. Similarly, when the inverted V-shaped convex portion 6 of the guide plate 1-2 is fitted and connected to the V-shaped concave portion 7 of the guide plate 1-2, the two guide portions 8, 8 are connected to the two guide rails. Form. In this case, after fitting the inverted V-shaped convex portion 6 of the guide plate 1-2 to the V-shaped concave portion 2 of the guide plate 1-1 and connecting the same, the connecting fitting 11 in the form of a scoop is provided between the holes 5 and 9.
Insert Similarly, after fitting the inverted V-shaped convex portion 6 of the guide plate 1-2 into the V-shaped concave portion 7 of the guide plate 1-2 and connecting the same, a connecting member in the form of a scoop is provided between the holes 9 and 10. 11
Insert

As shown in FIG. 2, the heat insulation box 21
It is not necessary to use special heavy equipment such as wreckers when carrying or installing in a furnace, and it is divided into several blocks in the direction of charging into the carbonization chamber to a size that can be carried by human power. Transported by workers and installed in the furnace. The heat insulation box 21-1 located on the innermost side of the furnace is
The rectangular frame portion 22 and the upper, lower, left, right and front surfaces are sealed by a heat insulating wall 23 such as a gypsum board.

The other heat-insulating box 21 is sealed with the frame portion 22 from above, below, left and right by heat-insulating walls 23 such as gypsum board, and the front and rear faces are opened so as not to obstruct the passage of repair workers. When installed in the carbonization chamber, a part of the heat insulating wall 23 of the heat insulating box 21 that is located at the repaired portion of the furnace wall is cut out. Each insulation box 21
When loading into the carbonization chamber, for example, the guide plate 1
Wheels 24 guided to the guide parts 3, 8 of -1, 1-2
At both bottoms. Although not shown, the heat insulating boxes 21 and 21 can be hermetically connected by connection fittings such as bolts and latches.

The installation of the heat insulating device consisting of the guide plate 1 and the heat insulating box 21 in the furnace requires the repair of the furnace wall of the carbonization chamber 31 as shown in FIG. From the kiln mouth side near the place, the worker 32
Inserts the guide plate 1-1. Next, V of the guide plate 1-1
After the worker 32 fits the inverted V-shaped convex portion 6 of the guide plate 1-2 into the U-shaped concave portion 2 and connects and connects the same, the holes 5 and 9 are inserted.
The connecting fitting 11 in the form of a stub is inserted between them. Further, after the worker 32 fits the inverted V-shaped convex portion 6 of the guide plate 1-2 into the V-shaped concave portion 7 of the guide plate 1-2 and connects and connects the same, the gap between the hole 9 and the hole 10 is changed. Is repeatedly inserted, and the guide plate 1-1 at the tip is positioned deeper than a place where the furnace wall of the carbonization chamber 31 needs repair.

Next, the worker 32 lifts the heat insulation box 21-1 located farthest in the furnace, and the heat insulation box 21-1 is lifted.
The wheel 24 of 1-1 is placed on the two guide portions 8, 8 of the guide plate 1-2 of the kiln opening, and is pushed straight into the carbonization chamber 31. Next, the worker 32 lifts the heat insulation box 21,
The wheels 24 of the heat-insulating box 21 are placed on the two guide portions 8 of the guide plate 1-2 of the kiln opening, and are pushed straight into the carbonization chamber 31 so that the heat-insulating boxes 21-1 and 21-1
Is hermetically connected by a connector (not shown) such as a bolt or a latch. Further, the worker 32 lifts the heat-insulating box 21, places the wheels 24 of the heat-insulating box 21 on the two guide portions 8, 8 of the guide plate 1-2 of the kiln opening, and pushes it straight into the carbonization chamber 31 so that the heat-insulating box 21 and The connection with the heat insulating box 21 is repeatedly sealed and connected by bolts, latches, or the like (not shown).
Push in until the wheel 24 of 1-1 contacts the stopper 4 at the tip of the guide portion 3 of the guide plate 1-1.

Thus, the heat insulating box 21 extends from the kiln opening to the inner side of the place where the furnace wall of the coking chamber 31 needs repair.
The passages cut off from the heat of the furnace wall are formed by -1, 21. The repair worker uses the heat insulation boxes 21-1, 21
Through the passage cut off from the heat of the furnace wall to enter and exit the carbonization chamber 31 from the kiln mouth, and from the part where the heat insulating wall 23 is cut off and opened, transshipment of the part requiring repair Perform repairs.

After the repair of the damaged portion of the furnace wall of the carbonization chamber 31 is completed, the heat insulation device is removed by repeatedly pulling out the heat insulation boxes 21 and releasing the connecting members, and removing each heat insulation box 21. Next, guide plates 1-1 and 1-
No. 2 hooks the hook at the tip of the hook bar into the hole 10 provided in the guide plate 1-2 of the kiln opening, and pulls out from the carbonization chamber 31 in order. In this case, each of the guide plates 1-1 and 1-2 has a hole 9 and a hole 10
Between the holes 5 and 9 and the connecting fitting 11 in the form of a scallops
Because they are connected by, they can be drawn out in any way. Therefore, if the connecting metal fittings 11 in the order of connecting the guide plates 1-2 and 1-1 are removed in order, only the concave portions 7 and the convex portions 6 of the concave-convex structure are in contact with each other.
It can be easily removed.

Example 2 Furnace height 7125 mm, furnace width 460 mm, furnace length 16500 m
In the conventional method of installing a heat insulation device for repairing the carbonization chamber using a crane and a winch when repairing partial reloading of a furnace wall damaged during operation at an operation rate of 100% in a coke oven of m In each case of the method of the present invention in which the heat insulating device described in 1 was installed manually, the time required for installing the heat insulating device, repairing the furnace wall, and removing the heat insulating device was examined. FIG. 4 shows the results. FIG. 5 shows a comparison of the operation schedule of the coke oven in that case.

As shown in FIGS. 4 and 5, in the case of the conventional method, the installation and removal of the heat insulating device using a crane and a winch requires a long time to install the heat insulating device, and the kiln is delayed due to a delay in taking out the kiln. It is necessary to change the kiln delivery schedule,
It takes a long time for total repair. On the other hand, in the case of the method of the present invention, it is possible to install and remove the heat insulating device manually without using a large facility that hinders the running of the extruder or the coke guide vehicle, using the intermittent kiln discharge time. Since it is possible, the installation and removal of the heat insulating device can be performed without changing the kiln discharge schedule due to the delay of the kiln discharge. The time required for total repair could be reduced by 40% compared to the conventional method.

[0034]

According to the heat insulating apparatus for hot repair of a coke oven of the present invention, the heat insulating box divided into several blocks in the direction of charging into the coking chamber so as to be portable by human power has wheels at the bottom. Since the small divided guide plate for guiding each heat insulation box into the carbonization chamber has a connection portion having an uneven structure that can be easily fitted, and a guide portion for guiding the wheels of each heat insulation box, a wrecker, a winch, etc. It can be installed in a carbonization room and removed from a carbonization room by using the intermittent kiln unloading time manually without using.

According to the method of installing a heat insulating apparatus for hot repair of a coke oven of the present invention, the heat insulating box is divided into blocks so as to be portable by human power, so that it is connected to the furnace bottom without installing a large temporary base. By guiding the wheels of the heat-insulating box with the guide portions of the respective guide plates, the heat-insulating box can be manually inserted into the carbonization chamber.
In addition, the installation time of the heat insulating device can be shortened, and the installation can be performed by using the intermittent kiln opening time, so that there is no need to change the operation schedule due to the kiln delay.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a guide plate of a heat insulating device of the present invention.

FIG. 2 is a perspective view showing an example of a heat insulating box of the heat insulating device of the present invention.

FIG. 3 is a schematic explanatory view of a method for installing a heat insulating device of the present invention.

FIG. 4 is a graph comparing the repair time between the conventional method and the method of the present invention in Example 2.

FIG. 5 is a graph comparing operation schedules of the conventional method and the method of the present invention in Example 2.

FIG. 6 is a perspective view showing one example of a dovetailed joint type with a guide plate of the heat insulating device of the present invention.

FIG. 7 is a perspective view showing an example of W-shaped uneven bonding of the guide plate of the heat insulating device of the present invention.

FIG. 8 is a schematic explanatory view of a method for installing the heat insulating device of the present invention from the side of an extruder.

FIG. 9 is a schematic explanatory view of a method of installing a heat insulating box disclosed in Japanese Patent Application Laid-Open No. 8-104875.

FIG. 10 is a schematic explanatory view of a method of installing a heat insulating box disclosed in Japanese Patent Application Laid-Open No. 6-41538.

[Explanation of symbols]

 1-1, 1-2, 73, 83 Guide plate 2, 7, 61, 71 Concave portion 3, 8, 84 Guide portion 4 Stopper 5, 9, 10, 74 Hole 6, 62, 72 Convex portion 11 Connection fitting 21, 21-1, 85, 94, 105 Insulation box 22 Frame part 23 Insulation wall 24, 86 Wheel 31, 81, 92, 102 Carbonization chamber 32 Worker 82 Bottom 87 Work deck 88 Extruder 91, 101 Coke oven 93 Pulley 95 Cable 96 Winch 103 Temporary stand 104 Roller conveyor 106 Chain 107 Coal charging hole

Claims (2)

[Claims] An insulated box divided into several blocks in the direction of charging into a carbonization chamber and a small divided guide plate for guiding each heat insulation box into the carbonization chamber are combined so as to be portable by human power. A coke characterized in that it has a wheel at the bottom of each heat insulation box, and has a connection portion having an uneven structure that allows each guide plate to be easily fitted, and a guide portion that guides the wheel of each heat insulation box. Heat insulation equipment for furnace hot repair. 2. A coke oven having a bottom portion in a coking chamber which is inserted into the coking chamber with the concave and convex portions of the concavo-convex structure of the small divided guide plate being fitted and connected in sequence. The heat insulation device for coke oven hot repair, characterized in that the heat insulation box for the hot repair of the coke oven is characterized in that the wheels of the heat insulation box divided into blocks are guided by the guide portions of the respective guide plates and the heat insulation box is sequentially pushed into the carbonization chamber by human power and connected. Installation method.