JPH09241647A - Supporting method of ceiling brick in repairing coke oven while it is hot - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the falling off of a ceiling part and the loosening of a joint on removing a suspended board for supporting the ceiling part during the exchange of piled bricks of a coke oven while it is hot. SOLUTION: This method for supporting the ceiling bricks in repairing a coke oven while it is hot, is to span a supporting beam 8 over the oven, supporting by lifting the ceiling part with a lifting board of which oven body direction of the lifting surface is made as slits-like form, hung down by a hanging bolt from the supporting beam 8. At the final stage of exchanging the bricks, a flat bar 2 is fitted and inserted through the slit of the lifting surface of the board, and the ceiling part 7 is supported by joining with welding both of ends thereof to a ceiling heat insulating member 10 of carbonizing rooms of both sides through a flat bar 17. After removing the lifting board, a rafter is inserted between the lower surface of the ceiling part not supported by the flat bar 2 and bricks exchanged oven walls, 15, 16 for supporting the ceiling part 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for supporting a ceiling brick in a non-repair section during hot repair of a furnace wall of a coke oven.

[0002]

2. Description of the Related Art In a chamber furnace type coke oven, a heat storage chamber is provided at a lower portion of a furnace body, and a combustion chamber and a carbonization chamber, which are divided into a plurality of flues by partition walls, are alternately arranged above the heat storage chamber. Fuel gas and air (only air in the case of rich gas) is preheated in the heat storage chamber, burned in the combustion flue, and then recovered in the adjacent heat storage chamber via the draw-down flue and then through the flue. Is discharged. The charging coal charged in the carbonization chamber is
It is carbonized from the combustion chamber through the furnace wall by indirect heating and coke.

The chamber furnace type coke oven is mainly composed of silica stone bricks and is constructed by clay bricks, heat insulating bricks, and red bricks. Especially, the furnace wall bricks in the carbonization chamber are always 1000 to 1200.
As it is exposed to a high temperature of ℃, it is charged and cooled at room temperature wet coal, friction and lateral pressure due to the extrusion of carbonized coke, carbon adhesion and peeling generated during carbonization, etc.
Repeated operations under severe conditions. For this reason, the furnace wall bricks in the carbonization chamber will be cut, damaged, and
Cracks, corners, chips, etc. occur. Therefore, in the coke oven, the damage condition of the furnace wall bricks is regularly inspected, and the damaged furnace wall brick portion is partially repaired by hot brick transshipment.

[0004] In the hot transshipment of damaged furnace wall bricks, for example, in the case of transshipment of furnace wall bricks from the kiln mouth to 2 flues, in order to prevent a temperature drop from the kiln mouth to 3 flues or more, 2 A heat insulation burner with a blocking member was installed between the flue and the 3 flue, the flues after the 3 flue were burned from the kiln opening, and the 2 flue gas port and air port openings were closed from the kiln opening with bricks,
A heat insulating material is placed to prevent a temperature drop in the heat storage chamber. Next, in order to secure a working environment, first, in order to prevent the temperature of the ceiling of the carbonization chamber from decreasing, a heat insulating member is installed on the ceiling of the carbonization chamber.

The installation of the heat insulating member on the ceiling of the carbonization chamber is shown in FIG.
As shown in FIG. 2 and FIG. 13, a heat insulating member 124 having a fixing bolt 123 composed of an iron plate 121 and a heat insulating material 122 is attached to a chain 126 that is unloaded from a coal charging port 125.
4 The fixing bolts 123 on the inner side are connected and inserted into the carbonization chamber 127, and the kiln opening side of the heat insulating member 124 is connected to the wire 129 passed through the pulley 128 installed above the kiln opening. Next, the heat insulating member 124 is hung by the chain 126 and the wire 129 to the ceiling of the carbonization chamber 127, and then the pedestal 13 for fixing the ceiling heat insulating member is prepared on the furnace.
The fixing bolt 123 is fixed to 0 by the tightening nut 131. Next, as shown in FIG. 14, the back side heat insulating material 132 is installed in the carbonization chamber 127 between the 2nd flue and the 3rd flue from the kiln mouth, and the old furnace wall bricks 133 to be dismantled and the furnace wall bricks 134 on the opposite side are disassembled. The side heat insulating material 135 to cover is installed, and finally the heat insulating material is laid on the furnace bottom of the carbonization chamber to complete preparation for dismantling the old furnace wall brick 133 and the old partition wall brick 136.

For the dismantling of furnace wall bricks, the old furnace wall bricks at the upper part of the transshipment section are dismantled in 2-3 stages, the non-reshipment section rooftop brick holder is carried in from the dismantled gap, and suspended through the inspection hole of the flue. After fixing with a tightening nut to the pedestal for fixing the ceiling heat insulating member with a rod, the old furnace wall brick and old partition wall brick to be transshipped in the carbonization chamber are dismantled to the furnace bottom.

When the old furnace wall bricks and the old partition wall bricks are completely dismantled, the new furnace wall bricks and the new partition wall bricks are sequentially stacked, and the new furnace wall bricks and the new partition wall bricks are left in the upper two or three steps. Then, the tightening nut is loosened, the suspension rod is lowered, and the furnace-top brick holder is removed from the untransferred gap.
As shown in FIG. 1, the ceiling portion 111 of the non-transhipment furnace top brick, the newly-replaced new furnace wall brick 112, and the new bulkhead brick 1
A rafter 114 for supporting is inserted between 13 and supported. The rafters 114 that support the ceiling portion 111 are continued to be piled up while exchanging with different sizes according to the progress of brickwork, and when the topmost brickwork is completed, the topmost brick and the ceiling part 111 are completed. Insert heat insulating material in between and hammer in a wooden wedge to complete transshipment.

When the transshipment is completed, a temporary furnace lid is attached to the kiln opening and the temperature rise of the transshipment bricks is started. The temperature of the transshipment brick is increased by expanding the furnace wall brick (silica brick) from the temperature when the new furnace wall brick and the new bulkhead brick are stacked (for example, 100 ° C) to the temperature required for normal operation (1000 ° C). Considering the characteristics, it is carefully performed so as not to cause cracks due to rapid thermal expansion. 2 with a large coefficient of thermal expansion
The temperature is controlled at a temperature rising rate of 30 to 40 ° C./Day between 0 and 400 ° C. to raise the temperature. In this case, the ceiling heat insulating member, the back heat insulating material, the side heat insulating material, and the bottom heat insulating material of the carbonization chamber are removed by removing the temporary furnace lid when the temperature rises to a predetermined temperature, and then the furnace lid is mounted. The heat insulating material laid on the bottom of the flue and the brick with the opening of the gas port and air port closed are taken out from the free inspection hole with a jig when the temperature rises to a predetermined temperature. Eventually, the wooden wedge burns down in accordance with the temperature rise expansion of the furnace wall brick, so that part is sprayed with mortar and then returned to operation.

As the non-transshipment furnace top brick holding method and device, a suspending member whose upper end is supported above the furnace, a frame body suspended and supported by the suspending member, and a vertical body in the frame body in a normal state are provided. A first brick holding member which is built in a posture and which is pivotally supported so as to swing from the above posture to a horizontal posture when holding the brickwork, and a first brick holding member which is detachably fixed to the frame body. A device configured by a second brick holding member (Japanese Patent Publication No. 45-38133), as shown in FIG. 10, laying a girder 101 at a position on the furnace where it does not interfere with a coal charging vehicle,
Beams 102 are provided in the direction of the row of the combustion chambers of the coke oven.
02 is fixed at a position intersecting with the girder 101, and this girder 1
02 The hanging bolt 10 at the position located at the port of the combustion chamber.
An opening for 3 is provided, an upper part of the furnace wall of the carbonization chamber having a height corresponding to the lower part of the ceiling brick is partially disassembled, a ceiling brick receiving object 104 is inserted, and the metal object 104 and the beam 102 are flue inspection holes. Hanging bolt 103 and tightening nut 10 that hang down on 105
A supporting structure that supports the ceiling bricks by bundling with 6
As shown in FIG. 9, when supporting the ceiling portion 91 of the wall structure to be dismantled and repaired, a support beam 92 is laterally laid across the wall structure of the non-repair portion in the direction of the furnace group as a fulcrum, and the support beam is The hanging bolt 93 is hung from 92 to lift and support the lower surface of the ceiling portion 91 of the repair portion, and the hanging bolt 93
The upper part of the spiral spring 95 is inserted in the lower part of the tightening nut 94.
A method of supporting the support beam 92 on the support beam 92 (JP-A-6-
No. 49451) is proposed.

[0010]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the holding device disclosed in Japanese Patent No. 133, the first brick holding member holds the furnace top brick in the partition wall direction before demolishing the brick, and the second brick holding member holds the furnace top brick in the furnace wall direction. After the second brick holding member is removed at the stage where the new brickwork leaves the upper two or three steps of the furnace wall, the new brickwork is completed,
After that, the first brick holding member is installed in a vertical posture and pulled out from the inspection hole. Therefore, this holding device
Even after removing the second brick holding member, the first brick holding member holds the furnace top brick in the partition wall direction, but since the furnace top brick in the furnace wall direction is not held, looseness of joints I'm worried.

Further, in the support structure disclosed in Japanese Utility Model Publication No. 61-26342 and Japanese Patent Application Laid-Open No. 6-49451, the ceiling suspension plate is used when the new brickwork leaves the upper two or three steps of the furnace wall. After removing the rafter, a rafter for support is inserted between the ceiling part of the non-transshipment section and the newly-replaced new furnace wall brick and new bulkhead brick to support, but immediately after removing the ceiling hanging plate, the rafter is removed. Shortly after insertion, the upper ceiling often fell off due to loose joints in the bricks,
This is a very dangerous work for the worker who removes the ceiling suspension plate. Also, from the construction side, if the bricks are finished with the joints of the ceiling bricks being loose, gas leakage will occur from the joints when returning to operation after repairs, and it will not be possible to obtain sufficient repair effects. Not only that, but in some cases, the ceiling part must be repaired.

The object of the present invention is to solve the above-mentioned drawbacks of the prior art, and even when the ceiling suspension plate that supports the ceiling portion which is the non-transshipment portion is removed, the ceiling portion and the transshipment brick can be safely transferred without the ceiling portion falling off. It is an object of the present invention to provide a method for supporting a ceiling brick during hot repair of a coke oven, which allows a rafter to be inserted therebetween and prevents loosening of joints in the ceiling portion.

[0013]

The present invention, when supporting the ceiling portion of an old furnace wall brick whose volume is changed during hot repair of a coke oven, uses a support beam with the wall structure of the non-repair portion in the furnace group direction as a fulcrum. Horizontally, hanging the hanging bolt from the support beam through the inspection hole of the flue, and lifting the ceiling part with the hanging plate having the slit-like hoisting surface furnace group direction to support it,
At the final stage of brick stacking, a flat bar is inserted into the slit on the lifting surface of the hanging plate, and both ends thereof are welded and connected to the ceiling heat insulating members of the carbonization chambers on both sides through the connecting flat bar to support the ceiling portion. The hanging plate is removed, a rafter is inserted between the new bricks that have been transshipped and the lower surface of the ceiling part that is not supported by the flat bar, and the ceiling part is supported, and the flat bar is removed. In this way, by suspending and supporting the ceiling part with a suspension plate with a slit-shaped suspension surface in the direction of the furnace group, before removing the suspension plate at the final stage of brickwork, the slits on the suspension surface of the suspension plate must be removed. If the flat bar is inserted and both ends are welded and connected to the ceiling heat insulation members of the carbonization chambers on both sides via the connecting flat bar to support the ceiling part, the suspension plate that supports the ceiling part that is not transshipment part is removed. Even in such a case, it is possible to safely insert the rafter between the ceiling portion and the new transshipment brick without dropping the ceiling portion, and it is possible to prevent loosening of the joints of the ceiling portion.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The reason why the hoisting surface of the hanging plate used in the present invention has a slit shape is that the flat bar is provided in the slit of the furnace group before removing the hanging plate at the final stage of brick stacking. It is for inserting and inserting both ends to the ceiling heat insulation member of both sides carbonization chamber by welding through the connecting flat bar to support the ceiling underside. The ceiling portion cannot be supported by welding through the connecting flat bar. Moreover, since the flat bar is fitted and the both ends thereof are welded and connected to the ceiling heat insulating members of the carbonization chambers on both sides via the connecting flat bar to support the ceiling portion, the hanging plate can be lowered and easily removed. Between the flat bars inserted in the slits, a sufficient gap is formed between the ceiling portion and the transshipment new brick to insert and support the rafters. Therefore, the thickness of the hanging plate is set in consideration of the thickness of the flat bar so that the flat bar can slide in the slit portion. Further, the slit position of the hanging plate in the furnace group direction is designed according to the brick stacking so that the rafters can be inserted into the respective furnace wall bricks and partition brick positions of the ceiling part.

Since the hoisting plate of the present invention has a slit-like hoisting surface furnace group direction, ribs are radially provided on the opposite side of the hoisting surface, that is, from the center of the lower surface toward the four corners, and the hanging bar penetrates through the center of the lower surface. Has a through hole. The ceiling plate is supported by the hanging plate by penetrating through the through holes of the support beams on the furnace and hanging the hanging rod from the inspection hole of the flue to dismantle the upper part of the old furnace wall brick to be dismantled in two or three steps. Lifting surface with a slit-shaped hanging plate is carried in from the gap, the hanging rod is penetrated through the through hole of the hanging plate, the cotter is fixed to the lower part, and the upper end of the hanging rod is supported on the support beam by adjusting the tightening bolts. Adjust force to support.

After that, the old furnace wall bricks and old partition wall bricks to be dismantled by a conventionally known method are dismantled to the furnace bottom, and then the new furnace wall bricks and new partition wall bricks are piled up to form the new furnace wall bricks and new partition wall bricks. When the upper two or three steps are left, a flat bar is inserted into the slit of the suspension plate in the furnace group direction, and both ends of the flat bar are welded to the ceiling insulation members of the carbonization chambers on both sides via the connecting flat bar. The lower surface of the ceiling is supported by connecting them. Then, to remove the hanging plate, loosen the tightening bolts of the hanging rod, lower the hanging plate, remove the hanging plate together with the cotter from the hanging rod, and remove it from the gap between the upper two steps or three steps of the remaining bricks of the furnace wall. Also remove the suspension rod and tightening bolt.

When the hanging plate is removed, the ceiling portion is supported by the ceiling heat insulating members of the carbonization chambers on both sides via the flat bar and the connecting flat bar, so that the joints of the ceiling portion do not become loose. Ceiling bricks never fall. Next, a rafter is inserted between the ceiling part supported by the ceiling heat insulating members of the carbonization chambers on both sides through the flat bar and the connecting flat bar and the new furnace wall brick and the new partition wall brick. Then, the welded portions of the flat bar and the connecting flat bar are cut, and the flat bar and the connecting flat bar are removed.

After removing the flat bar and the flat bar for connection, the rafter supporting the ceiling portion is replaced with one having a different size in accordance with the progress of the brickwork as in the conventional case, and the brickwork is continued. When the bricks on the upper stage are completed, a wooden wedge is driven with an insulating material interposed between the bricks on the uppermost stage and the ceiling to complete the transshipment.

[0019]

Example 1 Hereinafter, details of a method of supporting a ceiling brick during hot repair of a coke oven according to the present invention will be described with reference to FIGS. 1 to 8 showing an example. FIG. 1 is a bottom perspective view of a suspension plate of a ceiling portion used in the present invention, FIG. 2 is a perspective view of a flat bar fitted in a slit of the suspension plate, and FIG. 3 is a state in which the ceiling portion is supported by the suspension plate of the present invention. Of the furnace length direction, FIG. 4 is an explanatory view of the furnace length direction in which the flat bar is fitted in the slit of the hanging plate and the connecting flat bar is welded and fixed to the ceiling heat insulating members of both carbonization chambers. 5 is an explanatory view seen from the bottom of the hanging plate of FIG. 4, FIG. 6 is an explanatory view of the furnace length direction with the hanging plate removed, and FIG. 7 is a rafter between the ceiling part and the new furnace wall brick and new partition wall brick. FIG. 8 is an explanatory view in the furnace length direction in which the is inserted, and FIG. 8 is an explanatory view seen from the lower part of FIG. 7.

For example, when transcribing furnace wall bricks from the kiln mouth to 2 flues, first, in order to prevent a temperature drop from the kiln mouth to 3 flues or later, a blocking member is provided between the kiln mouth and 2 flues and 3 flues. A heat insulation burner was installed, the flues from the kiln mouth to the 3rd flue and above were burned, the gas port and air port openings of the 2 flue from the kiln mouth were blocked with bricks, and then a heat insulating material was placed on the heat storage chamber. Prevent temperature drop. Then, as described above, the heat insulation material is applied to the side wall of the carbonization chamber ceiling, the back side of the carbonization chamber, and the side wall wall facing the furnace wall brick to be transposed, and the heat insulation material is laid on the bottom of the furnace. The ceiling of the is supported by the method of the present invention. After that, the bricks in the furnace wall are dismantled and transshipped.

In FIG. 1 to FIG. 8, reference numeral 1 denotes a ceiling hanging plate used in the present invention, which has a plurality of slits 3 in which a flat bar 2 can slide in a furnace group direction of a hanging surface, and a hanging rod is provided at the center of a lower surface. 4 has through holes 5 penetrating therethrough, and ribs 6 are provided radially toward the four corners. As shown in FIG. 3, the ceiling plate 7 is supported by the suspension plate 1 by suspending the suspension rod 4 from the through hole of the support beam 8 installed on the furnace through the inspection hole 9 of the flue to dismantle the old furnace wall. The upper two or three steps of the brick 11 are disassembled, the suspension plate 1 is carried in through the gap, the suspension rod 4 is penetrated through the through hole 5, and the cotter 12 is attached to the lower portion of the suspension rod 4, and then the tightening nut 13 is attached. And the ceiling plate 7 is supported by the suspension plate 1.

After that, the old furnace wall bricks 11 and the old partition wall bricks 14 to be dismantled are dismantled to the furnace bottom, and then the new furnace wall bricks 15 and the new partition wall bricks 16 are stacked from the furnace bottom as in the conventional case. Then, when the new furnace wall bricks 15 and the new partition bricks 16 are left in the upper two or three steps, as shown in FIGS. 4 and 5, the flat bars 2 are inserted into the slits 3 of the hanging plate 1 and the flat bars are inserted. Flat bar 17 for connection at both ends of 2
One end is welded and fixed, and the other end is welded and fixed to the iron plate 18 of the ceiling heat insulating member 10 of the carbonization chamber 20 composed of the iron plate 18 and the heat insulating material 19, and the ceiling portion 7 is inserted through each flat bar 2 and the connecting flat bar 17. It is configured to be supported by the ceiling heat insulating member 10.

Then, the tightening nut 13 is adjusted to lower the suspension rod 4, the cotter 12 and the suspension plate 1 are removed, and the cotter 12 and the suspension plate 1 are removed from the gaps in the upper two or three stages that are left unstacked to obtain the state shown in FIG. . Next, as shown in FIGS. 7 and 8, the new furnace wall brick 15 and the new partition brick 16 and the ceiling portion 7
The rafters 21 are inserted between the bricks, and the ceiling part 7 is supported by the rafters 21 for each brick. When the insertion of the rafters 21 is completed, the welded portions of each flat bar 2 and the connecting flat bar 17 and the welded portions of the connecting flat bar 17 and the iron plate 18 of the ceiling heat insulating member 10 are cut, and each flat bar 2 and the connecting portion is cut. The flat bar 17 for a car is removed.

Subsequent new furnace wall bricks 15 and new bulkhead bricks 1
In the brickworking work of No. 6, as in the conventional case, one rafter 21 is removed to stack one brick, and the brickworking is continued while replacing the rafters 21 with different sizes according to the progress of the bricklaying. When the uppermost bricks are stacked, the wooden wedges are repeatedly driven by interposing a heat insulating material between the uppermost bricks and the ceiling, and the transshipment of the new partition bricks 16 and the new furnace wall bricks 15 is completed. In addition, 22 is a fixing bolt of the ceiling heat insulating member 10, 23 is a charging port, and 24 is a tightening nut of the fixing bolt 22.

With the above construction, since the ceiling portion 7 is supported by the ceiling heat insulating member via each flat bar 2 and the connecting flat bar 17 when the hanging plate 1 is removed, the ceiling portion 7 is supported. Since 7 does not fall out, the risk of brick falling out can be avoided. Further, loosening of joints on the ceiling portion 7 can be prevented, and gas leakage after returning to operation can be prevented. In this manner, with the ceiling portion 7 being supported by the ceiling heat insulating member via the flat bars 2 and the connecting flat bars 17, the rafters 21 are provided between the new furnace wall brick 15 and the new partition brick 16 and the ceiling portion 7 for each brick. After inserting, each flat bar 2 and connecting flat bar 17
After cutting the welded part and supporting each brick in the ceiling part with the rafters 21, one rafter 21 is removed and one brick is stacked as in the conventional case, and the dimensions are different according to the progress of the brick stacking. While replacing the rafters 21, the brickworking is continued, and when the topmost brickworking is completed, the wood wedge is repeatedly driven by interposing the heat insulating material between the topmost brickwork and the ceiling part, and the new partition bricks 16 and The transshipment of the new furnace wall bricks 15 is completed.

[0026]

According to the ceiling brick supporting method of the present invention,
The flat bar prevents the ceiling part from dropping when the ceiling suspension plate that supports the ceiling part is removed at the stage where only the upper two or three steps are left in the hot transfer of the coke oven. It is possible to secure the safety of the above, prevent loosening of the joints of the ceiling part, and prevent gas leakage after completion of transshipment repair.

[Brief description of drawings]

FIG. 1 is a bottom perspective view of a hanging plate of a ceiling portion used in the present invention.

FIG. 2 is a perspective view of a flat bar fitted into a slit of a suspension plate.

FIG. 3 is an explanatory view in a furnace length direction in which a ceiling portion is supported by a suspension plate of the present invention.

FIG. 4 is an explanatory view in a furnace length direction in a state where a flat bar is fitted into a slit of a hanging plate, a connecting flat bar is welded and fixed to a ceiling heat insulating member of both carbonization chambers.

5 is an explanatory view seen from the bottom of the hanging plate of FIG. 4. FIG.

FIG. 6 is an explanatory view in the furnace length direction with a hanging plate removed.

FIG. 7 is an explanatory view in the furnace length direction in which a rafter is inserted between the ceiling portion and new furnace wall bricks and partition bricks.

FIG. 8 is an explanatory view of the rafter portion of FIG. 7 viewed from below.

9A and 9B show a method for supporting a ceiling brick disclosed in Japanese Patent Laid-Open No. 6-49451, FIG. 9A is a schematic sectional view showing the overall supporting method, and FIG. 9B is a detailed view of a main part. Is.

FIG. 10 shows a conventional method for supporting ceiling bricks,
(A) figure is a schematic sectional drawing which shows the whole support method, (b) figure is a bottom perspective view of a ceiling suspension board.

FIG. 11 is an explanatory view in the furnace length direction in which a rafter is inserted between a conventional ceiling portion and new furnace wall bricks and partition bricks.

FIG. 12 is a schematic partially cutaway perspective view for explaining a conventional method of installing a heat insulating member on a ceiling of a carbonization chamber.

FIG. 13 is a schematic cross-sectional view showing a state in which a heat insulating member is installed on a conventional carbonization chamber ceiling.

FIG. 14 is a schematic horizontal cross-sectional view showing a state of installing a heat insulating material at the time of conventional hot brick transshipment.

[Explanation of symbols]

 1 Hanging Plate 2 Flat Bar 3 Slit 4 Hanging Bar 5 Through Hole 6 Rib 7, 91, 111 Ceiling Part 8, 92 Support Beam 9, 105 Inspection Hole 10 Ceiling Insulation Member 11, 133 Old Furnace Wall Brick 12 Cotter 13, 24, 94, 106, 131 Tightening nuts 14, 136 Old bulkhead bricks 15,112 New furnace wall bricks 16,113 New bulkhead bricks 17 Flat bar for connection 18,121 Iron plate 19,122 Insulation material 20,127 Carbonization chamber 21,114 Rafter 22 , 123 Fixing bolts 23, 125 Charging ports 93, 103 Hanging bolts 95 Spiral springs 101 Large beams 102 Small beams 104 Ceiling brick brackets 124 Insulation members 126 Chains 128 Pulleys 129 Wires 130 Frames 132 Backside insulation materials 134 Furnace wall bricks 135 Sides Insulation

Claims (1)

[Claims] 1. When supporting a ceiling portion of a furnace wall brick whose volume is to be changed during hot repair of a coke oven, a support beam is laterally hung from a wall structure of a non-repair portion in the direction of the furnace group and suspended from the support beam. The ceiling is lifted and supported by the hanging plate with the bolts hanging down and the furnace group direction is slit-shaped, and the flat bar is inserted into the slit on the lifting surface of the hanging plate at the final stage of transshipment brick, and both ends are After supporting the ceiling part by welding and connecting it to the ceiling heat insulating member of the carbonization chamber through the connecting flat bar, after removing the hanging plate, a rafter is placed between the transshipment furnace wall and the lower surface of the ceiling part not supported by the flat bar. A method for supporting a ceiling brick during hot repair of a coke oven, which comprises inserting and supporting a ceiling portion to remove the flat bar.