JP4920384B2 - Room furnace type coke oven structure and method for constructing room furnace type coke oven - Google Patents

Description

  The present invention relates to a coke oven structure in the vicinity of a protective plate disposed at both ends in a longitudinal direction of a carbonization chamber of a chamber furnace type coke oven, and a method for constructing a coke oven including the protective plate.

  As shown in FIG. 5, in the chamber-type coke oven, the lower stage of the furnace is the heat storage chamber 11, and the carbonization chamber 13 and the combustion chamber 14 are arranged on the upper (upper stage) of the heat storage chamber 11. The portion between the lower heat storage chamber 11 and the upper carbonization chamber 13 and combustion chamber 14 is called the bellows portion 12. The heat storage chamber 11, the carbonization chamber 13, the combustion chamber 14, and the bellows portion 12 are a brick structure 1 constructed by brickwork.

  Back stays 2 for applying a furnace clamping force to the brick structure 1 are disposed at both ends of the brick structure 1 in the coking chamber furnace length direction. A protective plate 3 is disposed between the backstay 2 and the brick structure 1 at the positions of the carbonization chamber 13 and the combustion chamber 14. The furnace clamping force of the backstay 2 is transmitted to the brick structure 1 via the protective plate 3. The protective plate 3 is made of a casting, has a thickness of about 150 mm, a height of about 7000 mm, and a width of about 850 mm.

  As shown in FIG. 6, a heavy furnace cover 15 is disposed at the end of the carbonization chamber 13, and the furnace cover 15 is held by the furnace cover frame 16, and the furnace cover frame 16 is attached to the protection plate 3. . The protection plate 3 is disposed on the brick that constitutes the bellows portion 12. Therefore, the total weight of the protection plate 3, the furnace lid frame 16, and the furnace lid 15 is supported by the bricks of the bellows portion 12 at the end of the furnace. The furnace lid 15 is attached and detached every day, and the bellows bricks of the furnace body receive the impact load when the furnace lid 15 is attached and detached every day.

  The bellows brick at the end of the furnace supports the total weight of the protective plate, the furnace lid frame, and the furnace lid as described above, and receives the impact of attaching and detaching the furnace lid, so that the frequency of brick damage occurrence is high. When the bellows brickwork at the end in the coke oven length direction is damaged, the adjacent heat storage chambers are short-circuited, or the standing-side bellows duct and the pull-side bellows duct are short-circuited. As a result, fuel gas is wasted and mixed with air in the heat storage chamber and burned, or it is discarded as it is mixed with combustion exhaust gas and not combusted, resulting in waste of fuel gas, and the brick becomes too hot. This will cause damage to the brick, which is not preferable.

  In Patent Document 1, the heat storage chamber ceiling level at the end is made lower than the heat storage chamber ceiling level at the center, the thickness of the bellows at the end is made thicker than the thickness of the bellows at the center, and the bellows at the center The thickness of the part is the same as the conventional thickness. By increasing the thickness of the end brickwork in this way, the strength increases in proportion to the square of the thickness increase ratio. Therefore, even if the load applied to the end portion in the furnace length direction is increased, the damage to the furnace body brickwork is reduced, and the life of the brick can be extended. Moreover, the conventional heat storage chamber capacity can be maintained.

JP-A-8-311455

  According to the method described in Patent Document 1, damage to the bellows brick at the end of the furnace can be reduced. However, the ceiling level of the heat storage chamber is not the same at the center and the end in the coke oven length direction. The construction cost of the furnace increases. In addition, there is a problem that the construction period for constructing the coke oven becomes longer due to the extension of the construction period.

  The present invention is a furnace-type coke that can keep the heat storage chamber ceiling level the same at the center and the end, while maintaining the capacity of the heat storage chamber at the conventional level and preventing damage to the bellows brick at the end. It aims at providing the construction method of a furnace structure and a chamber type coke oven.

  The protective plate 3 provided at the end of the coke oven and the furnace lid frame 16 and the furnace lid 15 connected to the protective plate 3 receive the weight by the bellows bricks at the end of the furnace. If the weight of the protective plate or the like can be received not by the bellows brick but by the backstay 2, the load on the bellows brick is reduced. As a result, even if the thickness of the bellows portion brick at the end portion is equal to the thickness of the central portion, damage to the bellows portion brick at the end portion can be prevented.

  The brick structure of the heat storage chamber of the coke oven is at room temperature when it is built, but it naturally expands when the temperature rises after starting operation, and the height of the heat storage chamber rises. As a result, the position of the bellows portion 12 also rises. The rise due to thermal expansion cannot be accurately predicted. Therefore, even if the protection plate 3 is held in the backstay 2 in advance and the installation height of the protection plate 3 is to be arranged at the planned height after the brick thermal expansion, the height of the protection plate 3 is set to the actual height after the brick thermal expansion. Can't be matched. Conventionally, the protective plate 3 is mounted on the bellows brick without being fixed to the backstay 2. Only by doing so, the installation height of the protective plate 3 can be accurately adjusted to a desired position. Because it was possible.

  The change in the height of the brick structure 1 due to thermal expansion cannot be accurately predicted before the building is built, but after the temperature has once increased and the thermal expansion has occurred, the height is kept constant. It was found that there was very little height fluctuation. Therefore, if the protective plate is fixed to the backstay when the temperature first rises and thermal expansion occurs, the brick structure does not receive the weight of the protective plate, so that the occurrence of brick cracks can be prevented. It has been found that the height of the protective plate can be held exactly at the position it should be.

This invention is made | formed based on the said knowledge, The place made into the summary is as follows.
(1) A backstay 2 for applying a furnace clamping force is arranged at both ends of the chamber-type coke oven in the coking chamber length direction, and the positions of the coking chamber 13 and the combustion chamber 14 arranged above the heat storage chamber 11 are arranged. A protective plate 3 is arranged between the back stay 2 and the brick structure 1, the back stay 2 has a back stay projection 4 on the side facing the protective plate 3, and the protective plate 3 is on the side facing the back stay 2. In the cold at the beginning of the construction of the coke oven brick, the protective plate projection 5 is in contact with the backstay projection 4 or the backstay projection 4 and the protective plate projection 5 The protective plate 3 can be supported in the vertical direction via the first padding 6 between the backstay projection 4 and the protective plate projection 5 after the coke oven brick is heated. The protective plate 3 can be supported in the vertical direction through the padding 7 Chamber furnace-type coke oven structure characterized and.
(2) The mutually opposing surfaces of the backstay projection 4 and the protection plate projection 5 have a taper to each other, and the second padding 7 or the first padding 6 and the second padding 7 are tapered. It is a cotter, The chamber furnace type coke oven structure as described in said (1) characterized by the above-mentioned.
(3) The surface of the backstay 2 facing the protective plate 3 directly above the backstay protrusion 4 has an opening 8, and the second padding 7, or the first padding 6 and the second padding 7 are The chamber furnace type coke oven structure according to the above (1), wherein the chamber type coke oven structure is inserted into the gap between the backstay projection 4 and the protective plate projection 5 from the opening 8.
(4) The chamber-type coke according to any one of (1) to (3) above, wherein the gap between the lower end 21 of the protective plate 21 and the brick structure 1 is 10 mm or less after the coke oven brick is heated. Furnace structure.
(5) The chamber furnace type coke oven structure according to any one of the above (1) to (4), wherein the second padding 7 also serves as the first padding 6.
(6) A backstay 2 for applying a furnace clamping force is disposed at both ends of the chamber-type coke oven in the coking chamber length direction, and the positions of the coking chamber 13 and the combustion chamber 14 disposed above the heat storage chamber 11 are arranged. A protective plate 3 is arranged between the back stay 2 and the brick structure 1, the back stay 2 has a back stay projection 4 on the side facing the protective plate 3, and the protective plate 3 is on the side facing the back stay 2. In the cold at the beginning of the construction of the coke oven brick, the protective plate projection 5 is in contact with the backstay projection 4 or the backstay projection 4 and the protective plate projection 5 In the meantime, the protective plate 3 is supported in the vertical direction via the first padding 6, and after heating the coke oven brick, the protective plate 3 is first supported by the brick structure 1 that has been thermally expanded and the protective plate 3 is raised. Next, the backstay projection 4 and the protective plate projection 5 Method for constructing a chamber furnace-type coke oven, characterized in that to the protection plate weight in the back stays 2 by passing through the second padding 7.
(7) A backstay 2 for applying a furnace clamping force is disposed at both ends of the chamber-type coke oven in the lengthwise direction of the carbonization chamber, and the positions of the carbonization chamber 13 and the combustion chamber 14 disposed above the heat storage chamber 11 A protective plate 3 is arranged between the back stay 2 and the brick structure 1, the back stay 2 has a back stay projection 4 on the side facing the protective plate 3, and the protective plate 3 is on the side facing the back stay 2. In the cold at the beginning of the construction of the coke oven brick, the protective plate 3 is vertically moved via the first padding 6 between the backstay projection 4 and the protective plate projection 5. After supporting and heating the coke oven brick, the protection plate 3 is positioned by inserting the second padding 7 between the backstay projection 4 and the protection plate projection 5, and the weight of the protection plate is set to the backstay 2. Of building a furnace-type coke oven
(8) The mutually opposing surfaces of the backstay projection 4 and the protective plate projection 5 have a taper to each other, and the second padding 7 or the first padding 6 and the second padding 7 are tapered. (6) or (6), wherein the protective plate 3 is raised by driving a taper cotter as the second padding 7 between the backstay projection 4 and the protective plate projection 5. The construction method of the chamber furnace type coke oven as described in 7).
(9) The opening 8 is provided on the surface of the backstay 2 facing the protective plate 3 immediately above the backstay protrusion 4, and the second padding 7, or the first padding 6 and the second padding 7 are It can be inserted into the gap between the backstay protrusion 4 and the protective plate protrusion 5 from the opening 8, and after heating the coke oven brick, the protective plate 3 is lifted so that there is a gap between the protective plate 3 and the brick structure 1. (6), characterized in that the protective plate 3 is held by inserting the second padding 7 into the gap between the backstay projection 4 and the protective plate projection 5 from the opening 8 while maintaining the predetermined interval. Or the construction method of the chamber furnace type coke oven as described in (7).
(10) After raising the protective plate 3 by interposing the second padding 7 between the backstay projection 4 and the protective plate projection 5, the gap between the protective plate lower end 21 and the brick structure 1 is within 10 mm. The method for constructing a chamber-type coke oven according to any one of the above (6) to (9).
(11) The method for constructing a coke oven according to any one of (6) to (10), wherein the second filling 7 also serves as the first filling.

  The present invention supports a protection plate with a backstay in the cold after building a brick, determines the exact position of the protection plate at the time of temperature rise when the brick structure is thermally expanded by heating, and then the protection plate is Because it is placed in its exact position and fixed to the backstay, the protective plate is not on the brick structure during operation of the coke oven, so the brick structure is not damaged, and the furnace connected to the protective plate and the protective plate It becomes possible to arrange | position a cover frame and a furnace cover in an exact position with respect to a carbonization chamber.

  By receiving the protective plate by the backstay according to the present invention, the coke oven furnace body is solidified, and productivity can be improved and the life can be extended.

  Since the heat storage chamber ceiling level is the same at the center and the end in the coke oven length direction, an increase in the construction cost of the coke oven can be avoided, and an extension of the construction period due to the extension of the furnace construction period can be avoided.

  As shown in FIG. 5, the brick structure 1 of the chamber-type coke oven has a heat storage chamber 11 at the lower stage, a carbonization chamber 13 and a combustion chamber 14 at the upper stage, and a bellows portion 12 brick between the upper and lower stages. Is done.

  This brick structure 1 has a backstay 2 disposed at both ends in the coking chamber furnace length direction, and by applying a force attracting the backstay 2 at both ends, as a result, the brick structure 1 disposed between the two backstays. A furnace clamping force is applied to

  The protection plate 3 is disposed between the backstay 2 and the brick structure 1 at the positions of the carbonization chamber 13 and the combustion chamber 14 (upper stage of the brick structure 1) disposed in the upper part of the heat storage chamber 11. The furnace clamping force of the backstay 2 is transmitted to the brick structure 1 via the protective plate 3. As shown in FIG. 6, the protection plate 3 is made of a casting, has a thickness of about 150 mm, a height of about 7000 mm, and a width of about 850 mm.

  At both ends of the carbonization chamber in the furnace length direction, furnace lids 15 for sealing the carbonization chamber 13 during coke dry distillation are arranged. The furnace cover 15 is held by a furnace cover frame 16, and the furnace cover frame 16 is attached to the protection plate 3.

  The structure of the brick structure 1 at the end in the longitudinal direction of the carbonization chamber furnace is that the upper carbonization chamber 13 and the combustion chamber 14 are slightly retracted from the lower heat storage chamber 11 and the bellows portion 12 brick, and the terrace is placed on the bellows portion brick. A shaped part is formed. As shown in FIG. 1, the protection plate 3 is disposed above the terrace 22.

  The backstay 2 and the protection plate 3 are opposed to each other. The back stay 2 has a back stay projection 4 on the side facing the protection plate 3, and the protection plate 3 has a protection plate projection 5 on the side facing the back stay 2. In the cold at the beginning of the construction of the coke oven brick, as shown in FIG. 1 (a), the protective plate projection 5 is in contact with the backstay projection 4 or as shown in FIG. 2 (a). The protection plate 3 can be supported in the vertical direction via the first padding 6 between the stay projection 4 and the protection plate projection 5. What is necessary is just to arrange | position the 1st filling 6 as needed. In addition, after heating the coke oven bricks, as shown in FIGS. 1C, 1D, 2C, and 2D, the second stay between the backstay protrusion 4 and the protective plate protrusion 5 The protective plate 3 can be supported in the vertical direction via the two fillings 7.

  Thereby, in the furnace body construction work of the coke oven according to the present invention, the backstay 2 is first installed, and then the brick structure up to the heat storage chamber 11 and the bellows portion 12 is constructed. At this stage, the protection plate 3 is attached to the backstay 2. The protective plate projection 5 is brought into direct contact with the backstay projection 4 (FIG. 1A), or the protective plate projection 5 is placed on the backstay projection 4 via the first padding 6. (FIG. 2A). The protection plate 3 and the backstay 2 are connected at several places on the protection plate 3 so that the protection plate 3 does not fall down. Further, the bricks of the carbonization chamber 13 and the combustion chamber 14 which are upper steps of the brick structure are constructed. Since the bolt that connects the protective plate 3 to the backstay 2 becomes an obstacle to the furnace construction, it is removed in order from the bottom when it becomes an obstacle. Once the construction is complete, all connecting bolts will be gone.

  In the initial cold state when the coke oven brick structure 1 is constructed, the weight of the protective plate 3 can be supported by the backstay 2 by placing the protective plate protrusion 5 on the backstay protrusion 4 (FIG. 1 (a)). Alternatively, by placing the protective plate projection 5 on the backstay projection 4 via the first padding 6 between the backstay projection 4 and the protective plate projection 5, Two weights can be supported by the backstay (FIG. 2 (a)). At this time, there is a gap between the protection plate lower end 21 and the bellows portion terrace 22, and the weight of the protection plate 3 and the members attached to the protection plate is supported by the backstay 2.

  As a method from the start of heating the coke oven to the positioning of the protective plate at the time when the temperature rise is completed, the present invention can be selected from two methods.

  First, the first method will be described.

  The lower end (protective plate lower end 21) of the protective plate 3 supported by the backstay 2 is located above the position of the terrace 22 when cold (FIGS. 1 (a) and 2 (a)). When the heating of the coke oven is started, the position of the terrace 22 rises due to thermal expansion, and the terrace 22 comes into contact with the lower end 21 of the protection plate. Furthermore, the position of the terrace 22 rises due to thermal expansion, the protection plate 3 is not held by the backstay projection 4 and the protection plate projection 5, and the weight of the protection plate 3 is supported by the brick structure on the terrace 22 portion. (FIG. 1 (b), FIG. 2 (b)).

  When the heating is completed, the thermal expansion of the brick structure 1 is completed, and the position of the terrace 22 is kept constant. Thereafter, the fluctuation of the vertical position of the terrace 22 is slight during the coke oven operation period. Therefore, the protective plate 3 is slightly raised to create a slight gap between the lower end 21 of the protective plate and the terrace 22. At this position, the weight of the protective plate is received by the backstay 2 by passing the second padding 7 between the backstay projection 4 and the protective plate projection 5 (FIGS. 1 (c) and 2 (c)). ).

  Here, as means for creating a gap between the lower end 21 of the protective plate 21 and the terrace 22, as shown in FIGS. 1 (d) and 2 (d), the backstay projection 4 and the protective plate projection 5 The mutually opposed surfaces have a taper to each other, the second padding 7 is a taper cotter, and the taper cotter which is the second padding 7 is driven between the backstay projection 4 and the protective plate projection 5. Thus, a means for raising the protective plate 3 can be employed. When the first padding 4 is used, the first padding 4 is also a tapered cotter.

  As another means for generating a gap between the lower end of the protective plate 21 and the terrace 22, as shown in FIG. 3C, the protective plate 3 is lifted by applying a lifting force F using a hoisting machine, A second padding 7 having a size matching the gap between the resulting backstay protrusion 4 and the protective plate protrusion 5 is selected, and the second padding 7 is selected as the backstay protrusion 4 and the protective plate protrusion. It is also possible to adopt a method in which the protective plate 3 is lifted as shown in FIG.

  In this case, as shown in FIG. 3, an opening 8 is preferably provided on the surface of the backstay 2 facing the protective plate 3 immediately above the backstay protrusion 4. The second padding 7 can be inserted into the gap between the backstay projection 4 and the protection plate projection 5 from the opening 8. After heating the coke oven bricks, a lifting force F is applied by a hoisting machine or the like to lift the protective plate 3 to keep the protective plate 3 at a predetermined distance between the lower end 21 of the protective plate and the terrace 22, and then backstay projections The second padding 7 is inserted into the gap between the cover 4 and the protection plate projection 5 from the opening 8, and then the lifting of the protection plate 3 is released, and the backstay projection 4 and the protection plate are interposed via the second padding 7. The weight of the protection plate 3 is supported by the protrusions 5 (FIGS. 3D and 3E). At this time, the gap between the lower end 21 of the protective plate and the terrace 22 is maintained at a constant interval.

  In a commonly used chamber furnace type coke oven, the position of the lower end 21 of the protective plate is determined in a state where it is placed on the terrace 22 of the bellows portion 12 brick. In the present invention, a gap is provided between the protective plate lower end 21 and the terrace 22, thereby reducing the load on the bellows portion 12 brick. If the gap between the lower end of the protective plate 21 and the terrace 22 is too large, the vertical positional relationship between the protective plate 3 and the carbonization chamber 13 is shifted from the original positional relationship, and the furnace cover frame 16 supported by the protective plate 3 The position with respect to the furnace lid 15 is shifted due to the relationship with the carbonization chamber 13. In the present invention, a conventional bellows portion 12 brick is used by setting the gap between the lower end 21 of the protective plate 21 and the terrace 22 provided in the brick structure to be within 10 mm, preferably within 5 mm, and preferably about 3 mm. As it is, it is possible to satisfactorily maintain the vertical positional relationship between the protective plate 3 and the carbonization chamber 13.

  Of course, by changing the shape of the bellows portion 12 brick, the gap between the lower end 21 of the protective plate 21 and the terrace 22 can be made wider when the position of the terrace 22 is lower than the conventional position. Become.

  Next, a second method will be described as a method from the start of the heating of the coke oven to the positioning of the protective plate at the time when the temperature rise ends.

  In the first method, when the brick structure is heated and the terrace 22 rises due to thermal expansion, the protection plate 3 is received at the terrace 22 at the lower end 21 of the protection plate, and the protection plate 3 is raised according to the thermal expansion. Adopted. On the other hand, the second method is characterized in that the protection plate 3 is not received by the terrace 22 of the brick structure even when the brick structure is heated and thermally expanded.

  As shown in FIG. 4A, in the cold at the beginning of the construction of the coke oven brick, the protective plate is supported in the vertical direction via the first padding 6 between the backstay projection 4 and the protective plate projection 5. is doing. And even after heating the coke oven bricks and raising the terrace 22, the terrace 22 does not reach the height of the lower end 21 of the protective plate as shown in FIG. The size of the first padding 6 is selected such that the terrace 22 does not reach the height of the protective plate 21 after the brick is heated.

  After the coke oven brick is heated, as shown in FIG. 4 (c), the lifting force F is applied by a hoisting machine or the like to lift the protection plate 3 and remove the first padding 6. Thereafter, the position of the protective plate 3 is lowered while the protective plate 3 is lifted, and the gap between the lower end 21 of the protective plate and the terrace 22 is maintained at a predetermined interval. Next, the second padding 7 is inserted into the gap between the backstay protrusion 4 and the protection plate protrusion 5 from the opening 8, and then the lifting of the protection plate 3 is released, and the backstay protrusion 7 is inserted via the second padding 7. The weight of the protection plate 3 is supported by the object 4 and the protection plate protrusion 5 (FIGS. 4D and 4E). At this time, the gap between the lower end 21 of the protective plate and the terrace 22 is maintained at a constant interval.

  In the case of using the second method, the brick structure and the lower end 21 of the protective plate are not in contact with each other at any time during cold, during heating, or after the end of heating. Therefore, it is possible to minimize the load on the brick structure.

  Items common to the first method and the second method will be described.

  In the present invention, the second padding 7 can also serve as the first padding. For example, in the second method, when the second padding is a taper cotter, a rough prediction of the ascent of the brick structure in the hot state is roughly predicted in advance, and the lower end of the protection plate is in the prediction of the terrace in the hot state. The second padding is arranged so that the position is slightly higher than the position. When the heating of the coke oven is completed and the position of the terrace is determined, the driving position of the taper cotter as the second padding is adjusted, and the vertical position of the protective plate is finely adjusted, thereby the lower end of the protective plate and the terrace Can be adjusted to a target value.

  After the second padding is arranged between the back stay projection and the protection plate projection, and the height of the protection plate is determined, the second padding and the back stay projection or the second padding It is possible to fix the position of the second padding by welding between the protective plate protrusions. As a result, the second padding is completely fixed. For example, it is possible to prevent a situation in which the position of the protective plate fluctuates due to the position of the taper cotter being displaced.

It is a fragmentary sectional view explaining the construction method of the room furnace type coke oven of the present invention, (a) is a state in the cold, (b) is in the middle of heating, (c) is in the state after completion of heating. It is a figure shown, (d) is DD arrow sectional drawing. It is a fragmentary sectional view explaining the construction method of the room furnace type coke oven of the present invention, (a) is a state in the cold, (b) is in the middle of heating, (c) is in the state after completion of heating. It is a figure shown, (d) is DD arrow sectional drawing. It is a fragmentary sectional view explaining the construction method of the room furnace type coke oven of the present invention, (a) is a state in the cold, (b) is a state in the middle of heating, (c) is a state at the time of completion of heating, (D) is a figure which shows the state after completion of a heating, (e) is EE arrow sectional drawing. It is a fragmentary sectional view explaining the construction method of the room furnace type coke oven of the present invention, (a) is a state in the cold, (b) is a state in the middle of heating, (c) is a state at the time of completion of heating, (D) is a figure which shows the state after completion of a heating, (e) is EE arrow sectional drawing. It is side surface sectional drawing of a chamber furnace type coke oven, The upper left shows the cross section of a combustion chamber, and the upper right shows the cross section of a carbonization chamber. It is a partial plane sectional view of a chamber furnace type coke oven.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Brick structure 2 Backstay 3 Protection board 4 Backstay protrusion 5 Protection board protrusion 6 1st padding 7 2nd padding 8 Opening part 11 Thermal storage room 12 Bellows part 13 Carbonization room 14 Combustion room 15 Furnace cover 16 Furnace cover Frame 21 Protection plate lower end 22 Terrace

Claims (11)

  Back stays for applying furnace tightening force are arranged at both ends of the coke oven length direction of the chamber furnace coke oven, and the back stay and the brick structure are located at the positions of the carbonization chamber and the combustion chamber arranged at the upper part of the heat storage chamber. A back plate has a back stay projection on the side facing the protection plate, and the back plate has a protection plate projection on the side facing the back stay. In the cold state, the protective plate protrusion may be in contact with the back stay protrusion, or the protective plate may be supported in the vertical direction via the first padding between the back stay protrusion and the protective plate protrusion. And, after heating the coke oven brick, the protective plate can be supported in the vertical direction through the second padding between the backstay projection and the protective plate projection. Furnace structure.   The mutually opposing surfaces of the backstay protrusion and the protective plate protrusion have a taper to each other, and the second padding, or the first padding and the second padding are taper cotters. The chamber furnace type coke oven structure according to claim 1.   The second stay, or the first padding and the second padding, are directly connected to the backstay protrusion from the opening. The chamber-type coke oven structure according to claim 1, wherein the chamber-type coke oven structure is inserted into a gap with the protective plate protrusion.   The chamber-type coke oven structure according to any one of claims 1 to 3, wherein a gap between the lower end of the protective plate and the brick structure is 10 mm or less after the coke oven brick is heated.   The chamber furnace type coke oven structure according to any one of claims 1 to 4, wherein the second padding also serves as the first padding. Back stays for applying furnace tightening force are arranged at both ends of the coke oven length direction of the chamber furnace coke oven, and the back stay and the brick structure are located at the positions of the carbonization chamber and the combustion chamber arranged at the upper part of the heat storage chamber. A protection plate is arranged between the back stay, the back stay has a back stay projection on the side facing the protection plate, the protection plate has a protection plate projection on the side facing the back stay,
When the coke oven brick is cold at the beginning of construction, the protective plate protrusion is in contact with the backstay protrusion, or the protective plate is moved up and down via the first padding between the backstay protrusion and the protective plate protrusion. After the coke oven brick is supported in the direction, the protective plate is first supported by the thermally expanded brick structure to raise the protective plate, and then the second stay between the backstay protrusion and the protective plate protrusion. A construction method of a chamber-type coke oven, wherein the weight of the protective plate is received by the backstay through the padding. Back stays for applying furnace tightening force are arranged at both ends of the coke oven length direction of the chamber furnace coke oven, and the back stay and the brick structure are located at the positions of the carbonization chamber and the combustion chamber arranged at the upper part of the heat storage chamber. A protection plate is arranged between the back stay, the back stay has a back stay projection on the side facing the protection plate, the protection plate has a protection plate projection on the side facing the back stay,
In the initial cold of the coke oven brick construction, the protection plate is supported in the vertical direction via the first padding between the backstay projection and the protection plate projection, and after the coke oven brick is heated, the backstay A method for constructing a chamber-type coke oven, wherein a protection plate is positioned by passing a second padding between the projection and the protection plate projection, and the weight of the protection plate is received by a backstay.   The mutually opposing surfaces of the backstay protrusion and the protective plate protrusion have a taper to each other, and the second padding, or the first padding and the second padding, are taper cotters, 8. The method for constructing a chamber-type coke oven according to claim 6 or 7, wherein the protective plate is raised by driving a taper cotter which is a padding between the backstay protrusion and the protective plate protrusion.   The second stay, or the first padding and the second padding, are directly connected to the backstay protrusion from the opening. After the coke oven brick is heated, it can be inserted into the gap between the protective plate protrusions, and then the protective plate is raised to maintain a predetermined distance between the protective plate and the brick structure, and then the backstay protrusion and the protective plate The method for constructing a chamber-type coke oven according to claim 6 or 7, wherein a second stuffing is inserted into the gap with the protrusion from the opening to hold the protective plate.   The gap between the lower end of the protective plate and the brick structure is set to be within 10 mm after the protective plate is raised by interposing the second padding between the backstay protrusion and the protective plate protrusion. The construction method of the chamber furnace type coke oven in any one of thru | or 9.   The method for constructing a chamber-type coke oven according to any one of claims 6 to 10, wherein the second stuffing also serves as the first stuffing.

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