JP5347598B2 - Insulating plate for hot repair of coke oven furnace wall and method for shutting off repaired and non-repaired parts during hot repair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and safely provide a heat insulation plate in a carbonization chamber when a furnace wall deformed so as to protrude to the carbonization chamber and partitioning the carbonization chamber and a combustion chamber of a coke oven is hot repaired. <P>SOLUTION: The heat insulation plate 11 is used for hot repair of the furnace wall 3 partitioning the carbonization chamber 1 and the combustion chamber 2 of a horizontal chamber oven type coke oven. A plurality of funiculi or chains 16 are provided in a longitudinal direction of the heat insulation plate 11 having a width W nearly equal to the length (width) in the oven battery direction of the carbonization chamber 1 and a length L a little shorter than the height of the carbonization chamber 1 at a moderate interval. At an upper end in the longitudinal direction, an attachment part 15 to a rotational part 23 of a movement roller 22 moved by guided by a rail 21 inserted in the oven battery direction from a carbonization chamber kiln opening 1a is provided to a ceiling of the carbonization chamber 1. Thereby, an operator can easily and safely provide the heat insulation plate even in the carbonization chamber deformed so that the wall surface is protruded and narrowed. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention is for hot repair of a coke oven furnace wall that enables protection of the worker and facilitating the installation work when the furnace wall that partitions the combustion chamber and the carbonization chamber of the coke oven is hot repaired. The present invention relates to a heat insulating plate and a method for blocking a repaired portion and a non-repaired portion during hot repair using the heat insulating plate.

  A normal horizontal chamber type coke oven (hereinafter simply referred to as “coke oven”) has a structure in which carbonization chambers and combustion chambers are alternately arranged in the direction of the furnace group, and coal charged in the carbonization chamber is placed adjacent to it. Coke is produced by indirect heating with the heat from the combustion chamber that performs dry distillation.

  FIG. 10 is a view schematically showing the structure of a coke oven, and FIG. 10 (a) is a vertical sectional view in the direction of the furnace group. As shown in FIG. 2A, the carbonization chamber 1 and the combustion chamber 2 adjacent to each other in the furnace group direction are partitioned by a furnace wall 3 provided in the furnace length direction. The furnace wall 3 is constructed by a refractory brick (hereinafter referred to as “furnace wall brick”) called a carbonization chamber furnace wall brick, a combustion chamber furnace wall brick, or simply a furnace wall brick.

  On the other hand, FIG. 5B is a vertical sectional view in the furnace length direction. In this figure (b), for convenience, the region of the carbonization chamber 1 is shown on the right side of the paper, and the region of the combustion chamber 2 is shown on the left side of the paper.

  As shown in FIG. 2B, the combustion chamber 2 is partitioned in the furnace length direction by combining two flues whose upper parts are in communication with each other, and the combustion chamber 2 is provided in the furnace group direction. A partition wall (hereinafter referred to as “partition wall”) 4 divides it into a plurality of flues. The partition wall 4 includes a combustion chamber flue partition brick, or a firebrick called simply a flue partition brick (hereinafter referred to as “partition brick”), and a part of the furnace wall 3 that is constructed on both sides in the furnace group direction. It is made up of furnace wall bricks.

  The furnace wall that separates the carbonization chamber and the combustion chamber is rapidly cooled from a high temperature state heated to about 1000 to 1200 ° C. by combustion in the combustion chamber by charging normal temperature coal into the carbonization chamber, and then the temperature is raised. Thus, a high temperature state is maintained for about 20 to 24 hours for coal dry distillation.

  Thus, during the production of coke, the furnace wall separating the carbonization chamber and the combustion chamber is repeatedly subjected to rapid temperature drops and increases. Further, the surface of the furnace wall on the carbonization chamber side is rubbed when coke is discharged. As a result, damage such as cracks, wear, and chipping occurs in the furnace wall that partitions the carbonization chamber and the combustion chamber.

  The damage generated in the furnace wall increases by being repeated over a life period of about 30 to 50 years. However, when the damage to the furnace wall is mild, it is easy to spray a refractory material on the damaged part. Deal with it. On the other hand, when the damage to the furnace wall is severe, the furnace wall brick and / or the partition brick are transshipped.

  By the way, since the inside of the coke oven which performs repair work is high temperature, it is necessary to prevent the heat from a non-repair part from being transmitted to the repair part. On the other hand, it is necessary to reduce damage and deterioration due to cooling in the bricks of the non-repaired portion.

  That is, it is desired that the repaired portion should be lowered in temperature and that the non-repaired portion should be kept as high as possible. For this purpose, when repairing the furnace wall, it is necessary to insulate the boundary between the coking chamber kiln in the coking chamber to the repairing section and the boundary between the repairing section and the non-repairing section on the anti-carbonizing chamber kiln side. Is called.

  In this heat insulation treatment, methods using various devices such as a heat insulating plate or a heat insulating box having a shape combined with a heat insulating plate have been studied. In particular, in the case of a repair portion in which a furnace wall protrudes from the combustion chamber side to the carbonization chamber side, a heat insulating box that can be deformed so as to be easily inserted into the inside of the carbonization chamber is disclosed (for example, Patent Document 1). .

  When the heat insulation box 5 is inserted into the carbonization chamber 1 having the repair portion A, the width of the heat insulation box 5 is narrowed as shown by a solid line in FIG.

  After passing through the narrowed repair portion A in this state, the variable portion 5a of the heat insulation box 5 is moved to return the width to the original state, and the heat insulation box 5 is installed (state indicated by imaginary lines in FIG. 11). The repair part A and the non-repair part B are shut off.

  Patent Document 1 does not specifically disclose a means for inserting the heat insulation box into the carbonization chamber or a means for returning the deformed heat insulation box to the original state after being inserted into the carbonization chamber. It is thought that the person performs by human power.

  However, the carbonization chamber of the coke oven has a length of 10m to 17m and a width of 400mm to 450mm, which is a very elongated shape, and is inserted while receiving high heat from the unheated carbonization chamber kiln. It is extremely difficult and harsh for the user.

  Also, since the furnace wall (shown by 3a in FIG. 11) on the side of the carbonization chamber kiln (shown by 1a in FIG. 11) is higher than the repaired part, the work is performed after passing the narrowed repair part. It is difficult for a person to enter the carbonization chamber and restore the insulating box to its original shape. Therefore, it is necessary to restore from the outside of the furnace using a lance or the like. However, since the carbonization chamber has a height of 4 m to 7 m from the bottom of the furnace to the ceiling, it is very labor-intensive work.

Further, Patent Document 2 discloses a method of vertically stacking the heat insulating bricks 6 of the combustion chamber 2 to be repaired from the outside of the adjacent carbonizing chamber 1 as shown in FIG. However, in this method, since the bricks 6 are stacked one by one using the brick pushing jig 7, the construction period becomes long. Moreover, if it is a deformed carbonization chamber in which the wall surface protrudes, the brick pushing jig 7 is caught by the protruding portion, so that brick building becomes difficult. Incidentally, 8 in FIG. 12 shows the repair time, heat insulating cover attached to the carbonization chamber kiln outlet 1 a.

JP 2006-342291 A Japanese Utility Model Publication No. 62-11951

  The problem to be solved by the present invention is that when the furnace wall that partitions the combustion chamber and the combustion chamber that is deformed so as to protrude toward the carbonization chamber is repaired hot, the conventional technology makes it easy to install a heat insulating plate in the carbonization chamber. It is a point that it cannot install in this, or this installation work cannot be performed safely.

The heat insulation heat repair plate for the coke oven furnace wall of the present invention,
In order to make it possible to easily and safely install a heat insulating plate in the carbonization chamber when hot repairing the furnace wall separating the carbonization chamber and combustion chamber of the coke oven that has been deformed so as to protrude into the carbonization chamber,
Presence furnace group length of the carbonization chamber (width) substantially equal width, have a slightly lower not higher than the height of the coking chamber, the height direction on one side in the width direction, the appropriate intervals A plurality of ropes or chains are attached, and at the upper end of the height direction, a moving member that is guided by a rail inserted in the furnace length direction from the coking chamber kiln to the ceiling of the coking chamber rotates. The main feature is the provision of a mounting part to the part.

  By adopting the above configuration, the present invention makes it easy to insert the heat insulating plate into the carbonization chamber, and inserts the heat insulating plate so that both side surfaces are front and rear in the insertion direction. Even when the repair part of the furnace wall partitioning the chamber protrudes into the carbonization chamber and the kiln width is narrowed, it can easily pass through. And installation is completed only by rotating 90 degrees using a rope or a chain in a predetermined insertion position.

In the present invention, the width substantially equal to the length (width) of the carbonization chamber in the furnace group means a width that is as equal as possible to the width of the carbonization chamber and that can be rotated 90 ° in the carbonization chamber. . Further, the height have slightly lower than the height of the coking chamber, a mounting portion provided on the upper end of the height direction, when attached to a rotating portion of the moving member, the floor of the coking chamber height direction lower end of the heat insulating plate The height with the smallest possible gap with the surface.

  When hot repairing the furnace wall that separates the combustion chamber and the carbonization chamber of a horizontal chamber furnace type coke oven, the heat insulation plate of the present invention is used to shut off the repaired portion and the non-repaired portion as follows. .

After inserting a rail extending in the furnace length direction into the ceiling of the carbonization chamber partitioned by the furnace wall to be repaired,
First, the heat insulating plate according to claim 1 is attached to the rotating part of the moving member that is guided and moved by the rail at the carbonization chamber kiln part, and then passes through the repairing part until it is positioned at the non-repairing part. The heat insulating plate is inserted using a pusher so that both side surfaces are front and rear in the insertion direction, and at the inserted position, the heat insulating plate is rotated 90 ° using a rope or a chain, and the non-repair is performed. And the repair part
Next, organic carbonization chamber kiln mouth, the rotating part of the moving member which moves by being guided by the rail, has an appropriate width, similar to the insulating plate, a slightly lower not higher than the height of the coking chamber Then, after attaching a side heat insulating plate provided with an attachment portion to the rotating portion of the moving member guided and moved by the rail at the upper end in the height direction, the side heat insulating plate is attached to both side surfaces using a pusher. Is inserted before and after the insertion direction, covering the furnace wall of the carbonization chamber facing the furnace wall to be repaired,
Finally, the gap between the carbonization chamber wall surface and the heat insulating plate and the gap between the heat insulating plate and the side heat insulating plate are sealed with a heat insulating material. This is the method for shutting off the repaired part and the non-repaired part during the hot repair of the present invention.

  According to the present invention, when the furnace wall that partitions the carbonization chamber and the combustion chamber is hot repaired, an operator can easily enter the carbonization chamber that is deformed and narrowed so that the wall surface protrudes from the outside of the furnace, and It will be safe to install.

Further, a heat insulating plate of the present invention, having an appropriate width, the insulation board having a height not slightly lower than the height of the coking chamber, said the upper end of the height direction, the moving member which moves by being guided by rails If a side heat insulating plate provided with a mounting portion to the rotating portion is used, the repaired portion and the non-repaired portion can be easily shut off.

It is a top view of the heat insulation board of this invention. It is the figure which showed the heat insulation board of this invention, (a) is a side view, (b) is a front view. It is a side view of the coke oven explaining the repair part of the furnace wall which partitions a carbonization chamber and a combustion chamber. It is a side view of the repair location which showed the state after inserting a rail in the ceiling of a carbonization chamber in carrying out hot repair. It is detail drawing of the site | part which suspends a rail and the heat insulation board of this invention. It is the figure which showed the state which inserted the rail in the carbonization chamber, when interrupting | blocking a repair part and a non-repair part. It is the figure which showed the state which pushes a heat insulation board in a carbonization chamber, (a) is a side view, (b) is a top view. It is the figure which showed the method of spraying a heat insulating material from the outside of a furnace, and interrupting | blocking hot air. It is a top view at the time of interrupting | blocking a repair part and a non-repair part by this invention method. It is a figure which shows the outline | summary of a horizontal chamber furnace type coke oven, (a) is a vertical sectional view of a furnace group direction, (b) is a vertical sectional view of a furnace length direction. It is a top view explaining the method of installing the heat insulation box which can deform | transform in a carbonization chamber. It is a carbonization chamber side view at the time of heat insulation brick installation.

  In the present invention, a heat insulating plate that is guided and guided by a rail is moved for the purpose of easily and safely inserting a heat insulating plate into a carbonizing chamber that is deformed so that a furnace wall that partitions the carbonizing chamber and the combustion chamber protrudes. Realized by making it rotatable.

  Hereinafter, after explaining the heat-insulating plate for hot repair of the coke oven furnace wall of the present invention, a method of using this heat-insulating plate to shut off the repaired part and the non-repaired part at the time of hot repair will be explained.

The heat insulation board of this invention is shown in FIG.1 and FIG.2. 1 is a plan view, FIG. 2 (a) is a side view, and (b) is a front view.
The heat insulating plate 11 according to the present invention, when repairing the furnace wall 3 partitioning the carbonization chamber 1 and the combustion chamber 2 hot, as shown in FIG. 3, the non-repair part B and the repair part inside the furnace of the carbonization chamber 1. A is cut off.

The heat insulating plate 11, the furnace group length of the coking chamber 1 (width) having a width W substantially equal, has a height L have slightly lower than the height of the coking chamber 1. For example, a heat insulating board 13 and a heat insulating wool 14 are attached around two steel frame metal frames 12 arranged at an appropriate interval in the width W direction. In order to make the heat insulating wool 14 easily pass through the carbonization chamber 1, it is desirable that the heat insulating wool 14 be bound with, for example, a wire and compressed as much as possible.

  The heat insulating plate 11 of the present invention is installed from the outside of the furnace into the carbonizing chamber 1 using the suspension beam (hereinafter referred to as rail) 21 shown in FIG. Note that FIG. 4 does not show the bricks of the repair part A. (Hereinafter, FIG. 6, FIG. 7 and FIG. 8 are also the same.) FIG. 5 shows the details of the part where the rail 21 and the heat insulating plate 11 are suspended.

  For example, the rail 21 has a structure in which two grooved steels are arranged back to back, and heat insulating wool 21a is provided at a portion in contact with the ceiling of the carbonization chamber 1, for example. A movable roller 22 that is movable along the rail 21 is attached to each of the two groove steels.

The heat insulating plate 11 of the present invention has the attachment portion 15 to the rotation portion (bolt) 23 suspended from the moving roller 22 at the upper end in the height L direction, so that it is suspended from the rotation portion 23. In this state, movement and rotation to the repairing part A in the carbonization chamber 1 can be performed.

As means for rotating in the suspended state, in the present invention, for example, four chains 16 are arranged on one side in the width W direction with an appropriate interval in the height L direction of the heat insulating plate 11. It is attached. Note that which side of the heat insulating plate 11 the width W direction of the chain 16 is attached to is determined by the rotation direction.

  Next, a method of using the heat insulating plate 11 to block the repaired part A and the non-repaired part B during hot repair will be described.

  FIG. 6 is a view showing a state in which the rail 21 is inserted into the carbonization chamber 1 when the repaired part A and the non-repaired part B are shut off. After inserting the rail 21 into the carbonization chamber 1, the work carriage 24 to which the heat insulating plate 11 arranged outside the furnace is attached in advance and the rail 21 inserted into the carbonization chamber 1 are connected. After connecting the work carriage 24 and the rail 21, the heat insulating plate 11 is moved into the carbonization chamber 1.

  FIG. 7 is a view showing a state in which the heat insulating plate 11 is pushed into the carbonization chamber 1. An operator pushes the heat insulating plate 11 into the carbonization chamber 1 from the work carriage 24 by using a pusher 25. At the time of pressing, the heat insulating plate 11 is rotated by 90 ° from the state where the repaired part A and the non-repaired part B of the carbonizing chamber 1 are shut off, that is, both sides with the thinnest thickness are in front of and behind the pressing direction. To.

  By pushing in in the above state, the repaired part A deformed so that the furnace wall 3 protrudes can be easily passed. After moving the heat insulating plate 11 to a predetermined position, the heat insulating plate 11 is rotated by 90 ° to shut off the non-repaired portion B and the repaired portion A in the carbonization chamber 1. This rotation is performed by an operator pulling the chain 16 that has been previously attached to the heat insulating plate 11 from the outside of the carbonization chamber 1.

Subsequently, the side heat insulating plate 17 is inserted into the carbonization chamber 1 in the same manner to cover the furnace wall 3 of the carbonization chamber 1 facing the furnace wall 3 to be repaired. This aspect insulation plate 17 has an appropriate width, the same as the heat insulating plate 11 has a slightly higher than the height low have a height of the coking chamber 1, the the upper end in the height direction, being guided by the rails 21 An attachment portion to the rotating portion 23 of the moving roller 22 that moves is provided.

Heat insulating plate 11 only rotate 90 °, or in only the insertion of the side heat insulating board 17, between the heat insulating plate 11 and the side heat insulating board 17, and the heat insulating plate 11 and the side surface heat insulating plate 17 and the furnace wall 3 of the coking chamber 1 There is a gap between the ceiling and the floor.

  Therefore, after the side heat insulating plate 17 is installed in the carbonization chamber 1, an operator enters the carbonization chamber 1 to block the gap, but in the carbonization chamber 1 deformed so that the furnace wall 3 projects. The worker may not be able to enter the installation position of the heat insulating plate 11.

  Accordingly, the protruding furnace wall 3 is removed and the heat insulating plate 11 and the side heat insulating plate 17 are fixed. However, the wall surface of the carbonization chamber 1 where the heat insulating plate 11 and the side heat insulating plate 17 have just been installed is still hot. It is not in a situation where the operator can easily enter the carbonization chamber 1 and work.

  However, in the above-described state, if the work is allowed to be performed, there is a risk that the installed heat insulating plate 11 and the side heat insulating plate 17 are deformed due to hot air from the inside of the carbonization chamber 1.

  Therefore, until then, in order to prevent hot air from inside the carbonization chamber 1, heat insulation is blown from outside the carbonization chamber 1 to block the hot air. Various methods are conceivable for spraying. For example, a heat insulating material in which heat insulating wool on cotton is mixed with mortar is sprayed on the portion using a long lance 26 using compressed air. The spraying state is shown in FIG. By spraying this heat insulating material, the working temperature in the carbonization chamber 1 can be further lowered, and the time required for fixing the heat insulating plate 11 and the side heat insulating plate 17 can be shortened.

  When the above spraying operation is completed, the heat insulating plate 11 and the side heat insulating plate 17 are finally welded and integrated (see FIG. 9).

  When the repair part A and the non-repair part B are shut off as described above, the heat insulating plate 11 can be easily installed in the deformed carbonization chamber 1 while ensuring the safety of the worker. A work space can be secured while protecting workers from residual heat. Moreover, the heat insulation board 11 can also be easily removed by pulling out the chain 16 from the carbonization chamber kiln 1a after the work in the carbonization chamber 1 is completed.

  The present invention is not limited to the above example, and it goes without saying that the embodiments may be changed as appropriate within the scope of the technical idea described in each claim. For example, the chain 16 is shown as a means for rotating the heat insulating plate 11, but a wire rope may be used instead of the chain 16.

  The present invention described above is effective not only for hot repair of the carbonization chamber but also for hot repair of other furnaces.

A Repairing part B Non-repairing part 1 Carbonization chamber 2 Combustion chamber 3 Furnace wall 11 Heat insulating plate 15 Mounting portion 16 Chain 17 Side heat insulating plate 21 Rail 22 Moving roller 23 Rotating portion 25 Pressed metal 26 Long lance

Claims (3)

A heat insulating plate used for hot repair of a furnace wall separating a carbonization chamber and a combustion chamber of a horizontal chamber type coke oven,
The heat insulator, the furnace group direction length of the carbonization chamber (width) substantially equal width, have a slightly lower not higher than the height of the coking chamber, the height direction on one side in the width direction, A plurality of ropes or chains are attached at appropriate intervals, and the upper end in the height direction is guided by a rail inserted in the furnace length direction from the carbonization chamber kiln to the ceiling of the carbonization chamber. A heat insulating plate for hot repair of a coke oven furnace wall, characterized in that an attaching portion to a rotating portion of a moving member is provided. When hot repairing a furnace wall that partitions a combustion chamber and a carbonization chamber of a horizontal chamber furnace type coke oven, a method of blocking a repaired portion and a non-repaired portion using the heat insulating plate according to claim 1,
After inserting a rail extending in the furnace length direction into the ceiling of the carbonization chamber partitioned by the furnace wall to be repaired,
First, the heat insulating plate according to claim 1 is attached to the rotating part of the moving member that is guided and moved by the rail at the carbonization chamber kiln part, and then passes through the repairing part until it is positioned at the non-repairing part. The heat insulating plate is inserted using a pusher so that both side surfaces are front and rear in the insertion direction, and at the inserted position, the heat insulating plate is rotated 90 ° using a rope or a chain, and the non-repair is performed. And the repair part
Next, organic carbonization chamber kiln mouth, the rotating part of the moving member which moves by being guided by the rail, has an appropriate width, similar to the insulating plate, a slightly lower not higher than the height of the coking chamber Then, after attaching a side heat insulating plate provided with an attachment portion to the rotating portion of the moving member guided and moved by the rail at the upper end in the height direction, the side heat insulating plate is attached to both side surfaces using a pusher. Is inserted before and after the insertion direction to cover the furnace wall of the carbonization chamber facing the furnace wall to be repaired,
Finally, a gap between the carbonization chamber wall surface and the heat insulating plate and a gap between the heat insulating plate and the side heat insulating plate are sealed with a heat insulating material.   The repair part at the time of the hot repair of Claim 2 which performs the heat insulating material which seals the clearance gap between a carbonization chamber wall surface and a heat insulation board, and the clearance gap between a heat insulation board and a side surface thermal insulation board by spraying from the outside of a furnace. And blocking method of non-repaired parts.

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