JP3551843B2 - Curing method for end of insulation wall for coke oven brick repair and insulation wall - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for curing an end portion of a heat insulating wall used to block heat from an adjacent combustion chamber when transferring furnace wall bricks in a coking chamber of a coke oven, and a heat insulating wall used for the method.
[0002]
[Prior art]
Generally, as shown in FIG. 3, a coke oven charges raw coal supplied from a coal tower 1 to a coal-charging vehicle 2 from a charging inlet 3 into a coke carbonization chamber 8 and heats it with combustion gas burned in the combustion chamber. Coke. The coke oven gas generated during the coking of the coal is discharged through the riser 5 and the dry main 6. The coke oven has a heat storage chamber 10 in the lower part, and a carbonization chamber 8 and a combustion chamber 9 are alternately arranged in an upper part to form a furnace group. The coal charged in the carbonization chamber 8 is supplied to the combustion chambers on both sides. Heat is received from 9 and carbonized. The coke obtained by carbonization is extruded by the extruder 11 after opening the door 7 of the carbonization chamber 8, stored in the fire extinguishing vehicle 13 via the guide vehicle 12, and transported by the fire extinguishing vehicle 13 to the red hot coke extinguishing equipment. .
[0003]
The furnace wall bricks of coke ovens are repeatedly subjected to wear due to coke extrusion and thermal load due to cooling when the door is opened, and the furnace wall bricks are damaged by long-term use, so thermal spray repair and hot transfer are performed. I have.
[0004]
When hot-replacement of furnace wall bricks, heat insulation walls are taken into the coking chamber, which has been turned into an empty furnace, and curing of the end of the heat insulation wall is ensured to cut off the work space where heat from non-transferred parts is cut off. Provide and cool the furnace wall bricks in the transshipment section and remove and transship.
[0005]
In particular, when the transshipment unit is cooled, the furnace wall brick shrinks and falls down to the carbonization chamber side, so after taking the heat insulation wall into the carbonization chamber, apply a cut beam to the end of the heat insulation wall, It is important to prevent falling.
[0006]
Therefore, as disclosed in Japanese Patent Application Laid-Open No. 9-53077, a technique has been proposed in which an operator enters a coke oven after taking a heat insulating wall into a carbonization chamber, and attaches a support hardware having a fastening handle.
[0007]
[Problems to be solved by the invention]
However, in the technique disclosed in Japanese Patent Application Laid-Open No. 9-53077, since the worker enters the inside of the carbonization chamber in a high temperature state before cooling the furnace wall brick of the transfer section, the heat insulating wall is provided by the furnace wall of the transfer section. It is necessary to attach heat insulating material to it. Therefore, before starting to cool the furnace wall bricks in the transfer section, the heat insulating material attached to the transfer section must be removed. In addition, a scaffold is required at the upper part of the heat insulating part to attach the support bracket, and in any case, it requires a long working time at a high temperature and has a drawback that the load on the worker is large.
[0008]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for curing an end portion of a heat insulating wall for repairing a coke oven brick, and a heat insulating wall used for the method.
[0009]
[Means for Solving the Problems]
The present invention relates to a method of removing a furnace wall brick of a coke oven partially by hot-repairing, by covering a surface of an adjacent wall body adjacent to the furnace wall brick to be removed with a heat insulating wall, and removing the furnace wall brick to be removed. The above problem was solved by a method of curing the end of the heat insulating wall for coke oven brick repair, wherein a cutting beam for preventing distortion of the adjacent wall is applied to an end of the heat insulating wall before cooling the adjacent wall. Things. And before the furnace wall is cooled, the cutting beam is applied by a remote operation from outside the furnace.
[0010]
The heat insulating wall of the present invention, which can preferably carry out the above method of the present invention, covers a furnace wall brick surface to be removed in a box-shaped heat insulating wall of one side open composed of a steel frame and a heat insulating material. A cut-off beam in which one end is pin-connected to the inner surface of the heat-insulating wall that covers the wall adjacent to the furnace wall brick to be removed, and the other end contacts the inner surface of the opposing heat-insulating wall. Is provided on the cutting beam, and an operation jig for swinging the cutting beam from outside the furnace is attached to the cutting beam.
[0011]
As the operation jig for swinging the cutting beam from outside the furnace, a chain, a rope, an iron rod, or the like attached to the free end side of the cutting beam can be used, and it is preferable to include means for operating the beam outside the furnace. . As the operation means, a manual operation, a jack, a towing machine or the like can be used. Since the girder can be operated and fixed remotely from outside the furnace, it is not necessary to attach heat insulating material to the furnace wall on the transshipment side. Therefore, the workload of the worker can be significantly reduced.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan sectional view of a furnace group incorporating a heat insulating wall 15 showing one embodiment of the present invention, and FIG. 2 is a side sectional view of FIG. In FIG. 1, reference numeral 8 denotes a carbonization chamber, 9 denotes a combustion chamber, and shows a process in which a heat insulating wall 15 is inserted before removing the furnace wall brick reloading portion 14 (wall portion not hatched). Things. As shown in FIGS. 1 and 2, the heat insulating wall 15 used in the present invention is composed of a skeleton pipe 19 and a heat insulating material, and is a box-shaped cross-sectional wall having one open side. Lack of insulation covering the surface. A girder 16 is attached to the inner surface of the heat insulating wall, which covers the adjacent wall body 20 of the furnace wall brick to be removed, inside the heat insulating wall 15 of this shape. The cutting beam 16 has one end connected to the inner surface of the heat insulating wall by a pin 17 and the other end free and swingable. The cutting beam 16 has a length such that the other end is in contact with the inner surface of the heat-insulating wall opposed thereto. Six such cutting beams 16 are attached at a pitch of 1 m in the furnace height direction. The cutting beam 16 may be made of metal, and preferably has a mechanism for extending and contracting the length. A chain 18 is attached near the free end of the cutting beam 16 as an operation jig for swinging the cutting beam, and the chain 18 is led out of the furnace through a skeleton pipe 19 of the heat insulating wall 15. After taking the heat insulating wall 15 into the carbonization chamber 8, as shown in FIG. 2, an operator pulls the chain 18 from outside the furnace using a table lifter 22 arranged on a platform 21, and moves the furnace 18 in the furnace height direction. Six cutting beams 16 attached at a pitch of 1 m were fixed.
[0013]
【The invention's effect】
According to the present invention, when transshipment of furnace wall bricks is performed in a coking oven of a coke oven, used to cut off heat from an adjacent combustion chamber, a heat insulation constituted by a steel skeleton and a heat insulating material. A cutting beam with one end fixed to the inside of the wall is provided and fixed by a remote operation from outside the furnace. / 5.
[Brief description of the drawings]
FIG. 1 is a partial plan cross-sectional view of a coke oven showing a heat insulating wall construction of an embodiment.
FIG. 2 is a partial vertical sectional view of a coke oven showing construction of a heat insulating wall according to an embodiment.
FIG. 3 is a partial perspective view illustrating the structure of a coke oven.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Coal tower 2 Charging car 3 Charging inlet 5 Rise pipe 6 Dry main 7 Door 8 Carbonization chamber 9 Combustion chamber 10 Heat storage chamber 11 Extruder 12 Guide car 13 Fire extinguishing car 14 Transshipment part 15 Insulation wall 16 Cut beam 17 Pin 18 Chain ( Operation jig)
19 Pipe 20 Adjacent wall 21 Platform 22 Table lifter

Claims (3)

In removing and repairing the furnace wall brick of the coke oven, the surface of the adjacent wall adjacent to the furnace wall brick to be removed is covered with a heat insulating wall, and the adjacent wall wall is cooled before cooling the furnace wall brick to be removed. A method for curing an end portion of a coke oven brick repairing heat insulating wall, wherein a cutting beam for preventing distortion of the wall body is provided on an end portion of the heat insulating wall. The method according to claim 1, wherein the cutting beam is applied by a remote operation from outside the furnace. A box-shaped heat-insulating wall composed of steel skeleton and heat-insulating material, which is a heat-insulating wall lacking the heat-insulating material covering the furnace-wall brick surface to be removed, and is adjacent to the furnace-wall brick to be removed. One end is pin-connected to the inner surface of the heat insulating wall in a portion covering the wall, and a cutting beam whose other end is in contact with the inner surface of the opposing heat insulating wall is swingably provided, and the cutting beam is swung from outside the furnace. Insulating wall for repairing coke oven bricks, in which the fixture is attached to the cutting beam.

Images