JP4166428B2 - Apparatus and method for repairing furnace wall in coke oven carbonization chamber - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a furnace wall repairing apparatus and method for a coke oven carbonization chamber that is inserted into a carbonization chamber and an operator enters to repair the furnace wall when repairing the furnace wall of the coke oven carbonization chamber.
[0002]
[Prior art]
Conventionally, furnace wall repair in a coke oven carbonization chamber has been performed by stopping operation of the coke oven or by spraying a repairable portion by inserting a castable injection pipe from a coal inlet at the top of the carbonization chamber.
However, stopping the operation of the coke oven not only causes a large loss of heat, but the preparation work and the restarting operation are complicated, and spraying the castable can cope with simple repairs, but There was a problem in completely repairing a large defect.
[0003]
Therefore, for example, JP-A-8-81681 discloses an example of a heat insulation box for hot repair work as a furnace wall repair device for a coke oven carbonization chamber. Then, the heat insulation box is inserted into the carbonization chamber, and an operator enters the inserted heat insulation box to perform repairs.
Here, the heat insulation box for hot repair disclosed in Japanese Patent Application Laid-Open No. 8-81681 has a side wall with a larger area than the size of the furnace wall collapse hole (that is, the repair part) on both sides of the coking chamber of the coke oven. A cooling water pipe is reciprocated in a U-turn shape as the main frame of a frame that forms a bottom surface and ceiling surface with a width narrower than the furnace wall interval, and a heat insulation board is detachably attached to the frame. It has become a shape.
[0004]
[Problems to be solved by the invention]
However, the width of the coke oven's carbonization chamber is usually very narrow, about 400mm, and in order to accommodate workers inside and provide sufficient insulation, a furnace wall repair device is required. Although the outer width of the steel is almost the furnace wall width of the carbonization chamber, it is necessary as a minimum condition.
[0005]
On the other hand, the furnace wall of the coking oven carbonization chamber is uneven due to coke production and is not flat. Various deposits are also formed on the wall surface.
For this reason, if the furnace wall repair device has a width that is almost the width of the furnace wall, the furnace wall repair device is caught on the furnace wall, and the furnace wall repair device cannot be smoothly inserted into the carbonization chamber.
[0006]
The present invention is to apply a furnace wall repairing apparatus and method capable of smoothly inserting a furnace wall repairing apparatus into a carbonization chamber and sufficiently securing a working space for workers entering the inside. With the goal.
[0007]
[Means for Solving the Problems]
The present invention relates to a furnace wall repair device for a coke oven carbonization chamber that is inserted into a coke oven carbonization chamber and an operator enters inside to repair the furnace wall, and is provided upright on the floor and both sides of the floor. A pair of side wall parts configured by fitting a removable heat insulation panel into a panel frame material, and a ceiling material that bridges the upper ends of the pair of side wall parts and is bent into an inverted U shape to allow expansion and contraction. And an expansion / contraction member that extends over the pair of side wall portions and widens between the side walls, and a cooler duct that circulates air and cools the inside of the furnace wall repair device. The above problems were solved by the furnace wall repair device in the coke oven carbonization chamber.
[0008]
Here, the pre-Symbol scaling member preferably made of a turnbuckle.
The present invention also relates to a method for repairing a coke oven carbonization chamber using any one of the above-described furnace wall repair devices, the first step of inserting the furnace wall repair device into a coke oven carbonization chamber, and the pair The second step of widening the upper side of the side wall portion of the steel sheet with the expansion / contraction member, the third step of entering the worker into the widened interior, and removing the heat insulation panel at the position corresponding to the repaired portion of the coke oven carbonization chamber furnace wall The above-mentioned problem has been solved by a furnace wall repairing method for a coke oven carbonization chamber characterized by comprising a fourth process and a fifth process for repairing the furnace wall.
[0009]
In addition, it is preferable that the second step and the third step are repeated as necessary so that an operator enters the furnace wall repair device.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will be described with reference to FIG.
The furnace wall repair device 3 of the present invention includes a floor portion 6 and a pair of side wall portions 4 that are configured by fitting a detachable heat insulating panel 4a into a panel frame member 4b upright on both sides of the floor portion 6; The upper end of the pair of side wall portions 4 is bridged to form a ceiling material 5 that can be expanded and contracted. The gantry 20 on which the furnace wall repair device 3 of the present invention is loaded will be described later.
[0011]
Since an operator enters the furnace wall repairing apparatus 3, the internal temperature needs to be a certain temperature (for example, about 50 ° C.) or less. Therefore, may be provided for click Radakuto 8 performs internal cooling of the furnace wall repair device 3 by circulating air 10.
The heat insulation panel 4 a is fitted into the panel frame member 4 b and constitutes the side wall portion 4 of the furnace wall repair device 3. The inner surface of the heat insulating panel 4a is, for example, a thin steel plate 14a, and has a structure in which a heat insulating material 14b is attached to the outer surface side. As the heat insulating material 14b, for example, kao wool (trade name, manufactured by Isolite Industry Co., Ltd.), which is a fireproof heat insulating fiber, can be suitably applied.
[0012]
The heat insulation panel 4a can be freely removed at a required location. As shown in FIG. 1, the operator removes the heat insulation panel at a position corresponding to the repair location 19 and performs necessary repairs. Do it.
Next, the expansion / contraction member 7 for expanding the upper part of the side wall part 4 so that the operator can freely enter the inside will be described.
[0013]
The present invention is characterized in that the width of the furnace wall repairing device 3 is made narrower than the width of the furnace wall of the coke oven carbonizing chamber 1 as shown in FIG. By doing so, when the furnace wall repairing device 3 is inserted into the coke oven carbonization chamber 1, the trouble that the device gets caught on the furnace wall can be solved.
However, since the width of the furnace wall repair device 3 cannot be sufficiently secured as it is, the operator cannot freely enter the device.
[0014]
Therefore, as shown in FIG.2 (b), the width | variety of the upper part side of the furnace wall repair apparatus 3 is expanded using the expansion / contraction member 7. FIG. By doing so, a certain width required for entering the apparatus can be secured. That is, since a person (operator) needs more width of the body part and the head than the feet, the upper part of the device is pushed wide when entering the device. Here, as the expansion / contraction member 7, a turnbuckle as shown in FIG. 4 is suitable. This turnbuckle has a structure in which the threaded portion 7b is expanded / contracted in accordance with the forward / reverse rotation of the tightening portion 7a.
[0015]
However, the expansion / contraction member 7 is not limited to the turnbuckle, and a hydraulic jack, a hydraulic cylinder, or the like may be used. Needless to say, the operating mechanism is not limited to hydraulic pressure, and may be pneumatic or mechanical.
Further, the expansion / contraction member 7 may be attached as required, and may be inserted into the inside while being widened, or may be attached in advance to a required position. The widening of the expansion / contraction member 7 may be performed one by one by the operator as necessary, or may be performed simultaneously by remote operation by performing automation.
[0016]
Next, the ceiling material 5 will be described.
In this embodiment, the ceiling material 5 of the furnace wall repair device 3 as shown in FIG. 1 and inverted U-shaped, it is enabling scaling by deflecting the ceiling material.
[0017]
Next, the gantry 20 will be described with reference to FIG.
The coke oven carbonization chamber 1 is a furnace with a narrow width and a high height, and a very deep depth.
On the other hand, the furnace wall repairing apparatus 3 of the present invention cannot be made very rigid because the ceiling portion can be expanded and contracted. However, it is necessary to enable transportation such as crane hanging at the minimum. Therefore, the furnace wall repair device 3 itself needs to be as compact and lightweight as possible. On the other hand, the height of the coke oven carbonization chamber is around 6 m, and the number of repaired portions of the furnace wall tends to be particularly high on the upper side around 5 m in height.
[0018]
Therefore, the furnace wall repairing apparatus 3 of the present invention is made compact so that the worker can enter it, and a stand 20 is provided separately.
The gantry 20 is assembled in advance to a required height with a gantry frame member 21 such as a square pipe. The height of the gantry 20 may be appropriately determined according to the height of the repaired portion of the furnace wall.
Next, the furnace wall repair method of the coke oven carbonization chamber of the present invention will be described.
[0019]
First, the roller channel 23 is inserted into the coke oven carbonization chamber 1 and laid on the bottom surface of the carbonization chamber, and the roller 22 is disposed. The gantry 20 is placed on the roller 22 and inserted into the furnace. Needless to say, a wheel may be attached to the gantry 20 in place of the roller 22. Here, the width of the gantry 20 is preferably equal to the width of the floor portion 6 of the furnace wall repairing apparatus 3.
[0020]
Next, the furnace wall repair device 3 is loaded on the gantry 20 using a crane, a tow truck, or the like.
The furnace wall repair device 3 is provided with wheels 11 and is slid on the gantry 20 and inserted into the furnace. For insertion into the furnace, an operator may push it in by hand, or a chain block or the like may be used. Here, since the width of the furnace wall repairing device 3 is narrower than the width in the furnace, all troubles caught on the furnace wall at the time of insertion can be solved.
[0021]
When the furnace wall repair device 3 is inserted into the furnace, air 10 is supplied to the cooler duct 8 to cool the inside of the furnace wall repair device 3.
When the worker enters the inside of the furnace wall repairing apparatus 3, the width of the upper side of the furnace wall repairing apparatus 3 is widened by using the expansion / contraction member 7, as already described in FIG.
And the heat insulation panel applicable to the repair location investigated beforehand by another means is removed, and a furnace wall repair is performed.
[0022]
After completion of the repair, the expansion / contraction member 7 is reduced and removed while being removed as necessary, or after the expansion, the expansion / contraction members 7 are simultaneously reduced in width and the supply of the air 10 is stopped, and then the furnace wall repair device 3 Is pulled out of the furnace and hung with a crane or a tow truck. Finally, the gantry 20 is pulled out, and the roller 22 and the roller channel 23 are removed to complete the operation.
[0023]
【The invention's effect】
According to the present invention, it is possible to eliminate the trouble that the furnace wall repair device gets caught in the furnace wall when inserted into the furnace, and it is possible to secure a sufficient working space for the worker entering the inside. It was.
As a result, the work efficiency of furnace wall repair could be greatly improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view (a) and a view taken along line AA of a furnace wall repair device of the present invention (b).
FIG. 2 is a schematic diagram for explaining expansion / contraction of a wall surface panel portion of a furnace wall repair device.
FIG. 3 is a side sectional view showing a furnace wall repairing device installed in a coke oven carbonization chamber.
FIG. 4 is a perspective view of a turnbuckle.
[Explanation of symbols]
1 Coke oven carbonization chamber 2 Worker 3 Furnace wall repair device (box)
4 Side wall
4a Thermal insulation panel
4b Panel frame material
4c sheet steel
4d Thermal insulation material 5 Ceiling material 6 Floor material 7 Expansion / contraction member (turn buckle)
7a Tightening part
7b Screw part 8 Cooler duct 9 Charging port
10 Air
11 wheels
14a sheet steel
14b insulation
18 Refractory brick
19 Repair Department (Brick missing part)
20 frame
21 Mounting frame material (square pipe)
22 Laura
23 Roller channel

Claims (4)

A furnace wall repair device for a coke oven carbonization chamber that is inserted into a coke oven carbonization chamber and an operator enters inside to repair the furnace wall.
The floor,
A pair of side wall portions that are upright on both sides of the floor portion and are configured by inserting a removable heat insulation panel into a panel frame member,
A ceiling member that bridges the upper ends of the pair of side wall portions, and that can be expanded and contracted by bending as an inverted U shape ;
An expansion / contraction member that extends over the pair of side wall portions and widens between the side walls;
A cooler duct that circulates air to cool the inside of the furnace wall repair device;
A furnace wall repair device for a coke oven carbonization chamber characterized by comprising: The furnace wall repair device for a coke oven carbonization chamber according to claim 1 , wherein the expansion / contraction member is a turnbuckle. A furnace wall repair method for a coke oven carbonization chamber using the furnace wall repair apparatus according to claim 1 or 2 ,
A first step of inserting the furnace wall repair device into a coke oven carbonization chamber;
A second step of widening the upper side of the pair of side wall portions with an expansion / contraction member;
A third step for workers to enter the widened interior;
A fourth step of removing the heat insulation panel at a position corresponding to the repaired portion of the coke oven carbonization chamber furnace wall, a fifth step of repairing the furnace wall,
A method of repairing a furnace wall of a coke oven carbonization chamber characterized by comprising: 4. The method of repairing a furnace wall in a coke oven carbonization chamber according to claim 3 , wherein the second step and the third step are repeated, and an operator enters the interior of the furnace wall repair device.

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