JP2002097472A - Apparatus and method for repairing oven wall of coke oven carbonization chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for repairing the oven walls of a coke oven carbonization chamber which is inserted into the coke oven carbonization chamber for an operator inside the apparatus to repair the oven walls. SOLUTION: The oven wall repairing apparatus 3 is constituted of a floor portion 6, a pair of side wall portions 4 standing upright at both sides of the floor portion and constituted by fitting removable adiabatic panels 4a in a panel frame material 4b, and a ceiling material 5 bridging the upper ends of the pair of the side wall portions and capable of expanding and contracting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to repair of a furnace wall of a coke oven carbonization chamber, which is inserted into a carbonization chamber and a worker enters inside to repair the furnace wall when repairing the furnace wall of the coke oven carbonization chamber. Apparatus and method.

[0002]

2. Description of the Related Art Conventionally, furnace wall repair of a coke oven carbonization chamber has been performed by:
This has been done either by stopping the operation of the coke oven or by spraying the repair part by inserting a castable injection pipe from the coal mouth above the carbonization chamber. However, stopping the operation of the coke oven not only causes a large loss of heat, but also complicates the preparation work and the operation of restarting the operation.Also, spraying castables can be used for simple repairs, There was a problem in completely repairing large defects.

For example, Japanese Patent Application Laid-Open No. 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. And
It is stated that the heat-insulating box can be repaired in a hot state by inserting the heat-insulating box into a carbonization chamber and performing repairs by an operator entering the inserted heat-insulating box. Here, JP-A-8-81681
The insulation box for hot repair work disclosed in Japanese Patent Application Publication No. 2004-27139 is a furnace wall collapse hole (that is, a repair part) on both sides of the coking chamber of a coke oven.
The cooling water pipe is formed in a U-turn reciprocating bypass as the main bone of a framework that constructs a side surface with an area larger than the size of the area and a bottom surface and a ceiling surface with a width smaller than the furnace wall spacing on both sides, and a heat insulating board in the same frame Are detachably attached to form a housing.

[0004]

However, the wall width of the coking chamber of a coke oven is usually very narrow, about 400 mm, so that workers can be housed inside and sufficient insulation should be provided. In order to do so, the outer width of the furnace wall repairing apparatus is set to be almost the same as the furnace wall width of the coking chamber, but it is necessary as a minimum condition.

[0005] On the other hand, the furnace wall of the coking chamber of the coke oven has unevenness due to coke production and is not flat.
Also, various kinds of deposits are formed on the wall surface. For this reason, if the furnace wall repairing device has a width almost the same as the furnace wall width, there is a problem that the furnace wall repairing device catches on the furnace wall, and the furnace wall repairing device cannot be smoothly inserted into the coking chamber.

[0006] The present invention provides a furnace wall repairing apparatus and method capable of smoothly inserting a furnace wall repairing apparatus into a carbonization chamber and securing a sufficient working space for an operator entering the inside. It is intended to apply.

[0007]

SUMMARY OF THE INVENTION The present invention relates to an apparatus for repairing a coke oven carbonization chamber, which is inserted into a coke oven carbonization chamber and into which a worker enters to repair the furnace wall. ,
It comprises a pair of side walls configured to fit removable insulation panels upright on both sides of the floor into a panel frame material, and a ceiling material capable of expanding and contracting by bridging the upper ends of the pair of side walls. The above problem has been solved by a furnace wall repairing apparatus for a coke oven carbonization chamber.

Here, it has been further found that it is preferable to have an expanding / contracting member which extends over the pair of side wall portions and widens the space between the side walls. Note that a turnbuckle is preferable as the expansion member. Further, the present invention is a method of repairing a coke oven carbonization chamber using any of the above furnace wall repairing apparatuses, wherein the first step of inserting the furnace wall repairing apparatus into a coke oven carbonization chamber; The second step of widening the upper side of the side wall portion with the expanding / contracting member, the third step of entering the widened inside by an operator, and removing the heat insulating panel at a position corresponding to the repaired portion of the coke oven carbonization chamber furnace wall. The above problem was solved by a method for repairing a coke oven carbonization chamber furnace wall, comprising a fourth step and a fifth step of repairing the furnace wall.

If necessary, the second step and the third step
It is preferable that the step is repeated so that the worker enters the inside of the furnace wall repair device.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described with reference to FIG. The furnace wall repairing device 3 of the present invention includes a floor 6, and a pair of side walls 4, which are configured by fitting a removable heat insulating panel 4 a upright on both sides of the floor 6 and a detachable heat insulating panel 4 a to a panel frame member 4 b, Bridge the upper ends of the pair of side walls 4,
It is composed of 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.

Since the worker enters the furnace wall repairing apparatus 3, it is necessary to keep the internal temperature below a certain temperature (for example, about 50 ° C.). Therefore, for example, a cooler duct 8 is provided, and the inside of the furnace wall repairing device 3 is cooled by circulating the air 10. The heat insulating panel 4a is fitted into the panel frame member 4b, and forms the side wall 4 of the furnace wall repairing 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 fire-resistant heat insulating fiber, can be suitably applied.

The heat insulating panel 4a is capable of freely removing a required portion, as shown in FIG.
The operator removes the heat insulating panel at a position corresponding to the repairing point 19 and performs necessary repairs. Next, a description will be given of the expansion / contraction member 7 for expanding the upper portion of the side wall portion 4 so that an operator can freely enter the inside.

The present invention is characterized in that the width of the furnace wall repairing device 3 is made smaller than the furnace wall width of the coke oven carbonization 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, it is possible to eliminate the trouble that the device gets stuck on the furnace wall. However, since the width of the furnace wall repair device 3 cannot be sufficiently ensured as it is, an operator cannot enter the device freely.

For this reason, as shown in FIG. 2B, the width of the upper part of the furnace wall repairing device 3 is increased by using the expanding / contracting member 7. In this way, a certain width required to enter the device can be secured. That is, since a person (operator) needs more width of the body and the head than under the feet, when entering the apparatus, the upper part of the apparatus is pushed and spread. Here, as the expanding / contracting member 7, a turnbuckle as shown in FIG. 4 is preferable. This turn buckle corresponds to the forward and reverse rotation of the fastening portion 7a,
It has a structure that expands and contracts the screw portion 7b.

However, the expansion / contraction member 7 is not limited to a turnbuckle, and a hydraulic jack, a hydraulic cylinder or the like may be used. Also, the operation mechanism is not limited to hydraulic pressure,
Needless to say, it may be pneumatic or mechanical. Further, the expanding / contracting member 7 may be detachable, if necessary, and may enter the inside while expanding the width, or may be previously attached at a required position. The widening of the expanding / contracting member 7 may be performed one by one by an operator as necessary, or may be performed simultaneously by remote control by automation.

Next, the ceiling member 5 will be described. In the present embodiment, as shown in FIG. 1, the ceiling member 5 of the furnace wall repair device 3 has an inverted U-shape, and the ceiling member is flexed to enable expansion and contraction. However, the present invention is not limited to this. Absent. For example, it is also possible to make the ceiling material 5 a sliding type,
Needless to say, a bellows type may be used.

Next, the gantry 20 will be described with reference to FIG. The coke oven carbonization chamber 1 is a narrow and high furnace having a very large depth. On the other hand, the furnace wall repairing device 3 of the present invention cannot be made to have a very high rigidity because the ceiling portion can be freely expanded and contracted. However, it is necessary to be able to carry at least a crane. Therefore, the furnace wall repairing 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 about 6 m, and the repaired portion of the furnace wall tends to be particularly large on the upper side of about 5 m in height.

For this reason, the furnace wall repairing device 3 of the present invention is made compact enough to allow a worker to enter, and a stand 20 is separately provided. 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 determined as appropriate in accordance with the height of the repair location on the furnace wall. Next, the method for repairing the furnace wall of the coke oven carbonization chamber of the present invention will be described.

First, the roller channel 23 is inserted into the coke oven carbonization chamber 1, laid on the bottom of the carbonization chamber, and the rollers 22 are arranged. The gantry 20 is placed on the rollers 22 and inserted into the furnace. Needless to say, a method may be adopted in which wheels are attached to the gantry 20 instead of the rollers 22. here,
It is preferable that the width of the gantry 20 is equal to the width of the floor 6 of the furnace wall repair device 3.

Next, using a crane, a tow truck, etc.,
The furnace wall repair device 3 is loaded on the gantry 20. Furnace wall repair equipment 3
Is provided with wheels 11 and is inserted into the furnace by sliding on a gantry 20. For insertion into the furnace, the 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 made smaller than the inner width of the furnace, it is possible to eliminate all troubles that get stuck on the furnace wall at the time of insertion.

After 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 repair device 3,
As described above with reference to FIG. 2, the width of the upper portion of the furnace wall repairing device 3 is increased by using the expanding / contracting member 7. Then, the heat insulation panel corresponding to the repaired part which has been investigated in advance by another means is removed, and the furnace wall is repaired.

After completion of the repair, the expanding / contracting member 7 is contracted and retracted as necessary, and then withdrawn, or after the retreating, the enlarging / contracting member 7 is simultaneously contracted and the supply of the air 10 is stopped. The repair device 3 is pulled out of the furnace and suspended by a crane, a tow truck, or the like. Finally, the gantry 20 is pulled out, the roller 22 and the roller channel 23 are removed, and the operation is completed.

[0023]

According to the present invention, it is possible to eliminate the trouble that the furnace wall repairing device gets stuck on the furnace wall when the furnace wall repairing device is inserted into the furnace, and to secure a sufficient working space for workers entering the inside. Is now available. as a result,
The work efficiency of furnace wall repair was greatly improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view (a) and AA of a furnace wall repair apparatus of the present invention.
FIG.

FIG. 2 is a schematic diagram illustrating expansion and contraction of a wall surface panel portion of the furnace wall repair device.

FIG. 3 is a side sectional view showing a furnace wall repairing apparatus installed in a coke oven carbonization chamber.

FIG. 4 is a perspective view of a turnbuckle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Coke oven carbonization room 2 Worker 3 Furnace wall repair device (box) 4 Side wall 4a Insulation panel 4b Panel frame 4c Thin steel plate 4d Insulation 5 Ceiling 6 Floor 7 Scaling member (turn buckle) 7a Tightening part 7b Screw part 8 Cooler duct 9 Charging port 10 Air 11 Wheel 14a Thin steel plate 14b Insulation material 18 Firebrick 19 Repair part (brick missing part) 20 Frame 21 Frame material (square pipe) 22 Roller 23 Roller channel

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Michio Honma 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. Chome (without address) Mizushima Works, Kawasaki Steel Corporation (72) Inventor Munekatsu Kuroda 1-chome, Mizushima, Kawasaki-dori, Kurashiki City, Okayama Prefecture Chiaki 4-16-38 Nakaune, Kurashiki-shi, Okayama Prefecture Yamazaki Mizushima Sales Office F-term (reference) 4H012 EA00

Claims (5)

[Claims] 1. A furnace wall repairing apparatus for a coke oven carbonization chamber, which is inserted into a coke oven carbonization chamber and in which an operator enters to repair the furnace wall, comprising a floor and uprights on both sides of the floor. And a pair of side walls configured by fitting a removable heat insulating panel to the panel frame material, and bridge the upper ends of the pair of side walls,
An apparatus for repairing a coke oven carbonization chamber wall, comprising a scalable ceiling material. 2. The furnace wall repairing apparatus for a coke oven carbonization chamber according to claim 1, further comprising an expanding / contracting member provided at a position above the pair of side walls to widen the space between the side walls. A furnace wall repairing apparatus for a coke oven carbonization chamber. 3. The apparatus according to claim 2, wherein the expansion and contraction member is a turnbuckle. 4. A method for repairing a coke oven carbonization chamber using the furnace wall repair apparatus according to claim 1, wherein the furnace wall repair apparatus is inserted into a coke oven carbonization chamber. , A second step of widening the upper side of the pair of side wall portions with a widening member, a third step of inserting an operator into the widened inside, and a repair location of a coke oven carbonization chamber furnace wall. A method for repairing a coke oven carbonization chamber wall, comprising: a fourth step of removing a heat insulating panel at a position; and a fifth step of repairing a furnace wall. 5. The furnace wall repair of a coke oven carbonization chamber according to claim 4, wherein the second step and the third step are repeated, and an operator goes inside the furnace wall repair apparatus. Method.