JP6544103B2 - Chamber type coke oven - Google Patents

Description

  The present invention relates to a chamber type coke oven having a dry communication hole, and more particularly to a chamber type coke oven having a dry communication hole which becomes a passage for combustion gas when the furnace body is dried after furnace construction and before operation. It is an invention.

  In general, a chamber type coke oven has a structure in which a carbonization chamber and a combustion chamber are alternately arranged in the furnace width direction on a heat storage chamber. Fig. 1 shows the basic structure of the chamber coke oven. FIG. 1A shows the cross-sectional structure in the furnace length direction, the A side shows the cross-sectional structure of the combustion chamber surface, and the B side shows the cross-sectional structure of the carbonization chamber surface. FIG. 1 (b) shows a part of the cross-sectional structure in the furnace width direction. As shown in FIG. 1, in the coke oven, the heat storage chamber 20 is disposed on the hearth support structure 10, and the combustion chamber 30 and the carbonization chamber 40 are alternately disposed on the heart chamber in the furnace width direction (FIG. 1 (b), see).

  Fuel gas is fed into the heat storage chamber 20 from the fuel gas feed passage 50, and air is fed from the air feed passage 60. After being preheated, the air and the fuel gas burn in the combustion chamber 30. The combustion exhaust gas passes through the heat storage chamber 20, exchanges heat with the heat storage brick, and is discharged from the chimney through the flue 70. The combustion of the gas in the combustion chamber 30 heats the carbonization chamber 40 arranged adjacent to the combustion chamber 30, and the coal charged from the coal charge inlet 80 is distilled by distillation in the carbonization chamber 40 to coke. Manufacture.

  The combustion chamber 30 and the carbonization chamber 40 are covered with a ceiling wall 90. Of the ceiling wall 90, the coke charging inlet 80 and the coke oven generated in the carbonization chamber 40 are located above the carbonization chamber 40. A riser (not shown) is provided for venting the gas. In the upper part of the combustion chamber 30 of the ceiling wall 90, a flow hole 100 is provided for checking the combustion state in the combustion chamber 30, measuring the temperature, and adjusting the combustion.

  The furnace facilities of such coke ovens are constructed by stacking firebricks, but the furnace bodies after being built are moist due to the moisture contained in the refractory bricks themselves, joint mortars, etc. Coke ovens need to be dried by raising the temperature of the furnace body from normal temperature to a temperature at which it can be operated after furnace construction and before operation. In this furnace drying, the combustion gas is supplied to the carbonization chamber 40 from the furnace lid at the end in the furnace length direction, and the combustion gas is circulated in the order of the combustion chamber 30 and the heat storage chamber 20 to heat and dry the entire furnace. Do.

  In the supply of combustion gas from the carbonization chamber 40 to the combustion chamber 30, a drying hole is provided in a furnace wall (ceiling wall) separating the two chambers, and the combustion gas is made to flow into the combustion chamber 30 via the drying hole. . Next, the installation locations of the drying holes in the combustion chamber 30 and the carbonization chamber 40 of the conventional coke oven will be shown.

  FIG. 2 shows a cross-sectional view cut along a cross section including the carbonization chamber, the combustion chamber and the drying hole in the furnace width direction of the coke oven. As shown in FIG. 2, the drying holes 110 communicate with the ceiling wall 90 that divides the flow holes 100 in the upper portion of the combustion chamber 30 and the portion directly below the coal inlet 80 in the upper portion of the carbonizing chamber 40. It is provided as. The arrows indicate the flow of combustion gas in drying the furnace, and the combustion gas supplied to the carbonization chamber 40 flows into the combustion chamber 30 via the drying holes 110.

  Further, FIG. 3 is a partial cross-sectional perspective view including a cross section in the furnace length direction of the furnace top portion of the coke oven. Fig.3 (a) shows the partial cross section perspective view containing the AA cross section of FIG. 2, FIG.3 (b) shows the partial cross section perspective view including the B-B cross section of FIG. FIG. 3 is a partially enlarged view of the furnace top portion of the coke oven, and as shown in FIG. 3A, in the flow hole 100 in the upper part of the combustion chamber 30 in the ceiling wall 90, in the furnace width direction A drying hole 110 is provided to penetrate. And as shown in FIG.3 (b), the drying hole 110 so that it may penetrate in the furnace width direction in the ceiling wall 90 directly under the coal inlet 80 of the upper part of the carbonization chamber 40 and the opening 120 of a rising pipe. It is provided.

  In addition, the cross-sectional view of the combustion chamber in the furnace length direction of the coke oven is used to illustrate the flow of the combustion gas in the furnace body drying. FIG. 4 shows a cross-sectional view of the combustion chamber in the furnace length direction of the coke oven. FIG. 4 shows a cross section of the combustion chamber in the furnace length direction including the drying hole 110 shown in FIG. 3, and the dotted line indicates the coal loading of the carbonization chamber 40 located on the back side in the paper depth direction (furnace width direction). The vicinity of the furnace top including the inlet 80 is shown. The combustion chamber 30 is divided by a partition 130 into combustion chambers generally around 30 in order to perform temperature control in the furnace length direction. In FIG. 4, the combustion cells 30A and 30B partitioned by the partition wall 130 are illustrated.

  For example, in the combustion chamber 30A in the combustion chamber, the combustion gas flows from the drying hole 110A provided in the flow hole 100A in the upper portion of the combustion chamber 30A to the combustion chamber 30A and flows out to the heat storage chamber 20 It is As a result, the combustion chamber 30A is heated and dried.

  Here, no combustion gas flows into the combustion chamber 30B. This is due to the following reasons. Since the carbonization chamber 40 and the combustion chamber 30 are required to have gas sealability in coke operation, after the furnace body is dried after furnace construction, drying is performed using the plugging jig from the coal loading port 80 and the opening 120 of the riser. It is closed by inserting a plug brick in the hole 110. Therefore, the drying holes 110 are provided immediately below the coal inlet 80 and the opening 120 of the riser. However, since the coal inlet 80 and the opening 120 of the riser are not provided in the cross section including the combustion small chamber 30B in the furnace width direction, the drying hole 110 can not be provided. Therefore, in the conventional coke oven, there are combustion chambers such as the combustion chamber 30B which can not be heated and dried by direct combustion gas.

  On the other hand, since the closing work of inserting the plug brick into the drying hole 110 after the furnace body drying after the furnace setting is a work performed in a state of being exposed to high temperature hot air, the work load is large. Therefore, it is desirable to facilitate the closing operation of the drying hole, and further to prevent the plug brick from falling off even when using a long-term coke oven, and to reliably prevent the gas leakage between the combustion chamber and the carbonization chamber. The following technologies have been proposed.

  For example, in Patent Document 1, by installing a mortar pooling space in the middle portion of a drying plug obtained by inserting the plug brick into the drying plug-receiving brick, the mortar in the mortar pool solidifies to perform a sealing function, and a plug brick A technique for preventing the dropout of the

  Further, in Patent Document 2, the drying hole is provided with a restriction portion and a depression portion, and the restriction portion prevents the plug brick from passing through the drying hole and falling off, and the depression portion reverses the restriction direction of the restriction portion. Discloses that the drying holes can be mechanically supported by the plug bricks by preventing the plug bricks from falling off, and the technology for preventing gas leakage between the combustion chamber and the carbonization chamber without falling off is disclosed. ing.

  As described above, various techniques have been proposed for improving the workability of the drying hole blocking operation, but in order to reduce the labor, it is preferable to reduce the number of drying holes, and in particular, among the drying holes, FIG. It is preferable to eliminate the drying hole provided in the place where the tip of the plugging jig is difficult to reach, like the drying hole 110A shown in FIG.

  As a technique for solving such a problem, in Patent Document 3, one end of a dry communication pipe is connected to the flow hole of the combustion chamber, and the other end of the dry communication pipe is connected to the coal charging inlet of the carbonization chamber There is disclosed a technology for reducing the number of drying holes by guiding the combustion exhaust gas generated by burning the fuel in the carbonization chamber from the carbonization chamber to the combustion chamber through the drying connection pipe and drying the furnace body.

  FIG. 5 shows a cross-sectional view of a combustion chamber in a furnace length direction of a coke oven having a drying connection pipe, and shows a flow of combustion gas of the technology disclosed in Patent Document 3. As shown in FIG. As in the conventional coke oven shown in FIG. 4, in a part of the combustion chambers in the combustion chamber 30, the combustion gas is supplied to the combustion chambers from the drying holes 110 provided in the upper flow holes 100, and the combustion chambers are It is heated and dried. The dotted line indicates the vicinity of the furnace top including the coal loading port 80 of the carbonizing chamber 40 located on the back side in the paper surface depth direction (furnace width direction).

  In the coke oven shown in FIG. 5, the drying hole provided at a place where the tip of the plugging jig is hard to reach such as the drying hole 110A shown in FIG. 4 is eliminated, and the dry communication tube is opened at the opening of the blow hole 100A of the combustion chamber 30A. One end of 140A is connected, and the other end is connected to the coal charging port 80A of the carbonization chamber 40 located on the back side in the paper depth direction. Thus, even if the drying holes 110A are reduced, the combustion gas can be introduced from the carbonization chamber 40 to the combustion chamber 30A through the drying connection pipe 140A, so that the temperature of the combustion chamber 30A can be raised and dried.

  Furthermore, in the coke oven shown in FIG. 5, in the conventional coke oven shown in FIG. 4, the combustion gas can flow into the combustion chamber 30B which can not be directly dried by the combustion gas. One end of the dry communication pipe 140B is connected to the opening of the flow hole 100B at the top of the combustion chamber 30B, and the other end is connected to the coal loading port 80B of the carbonization chamber 40 located on the back side in the paper depth direction. As a result, the combustion gas can be introduced from the carbonization chamber 40 to the combustion chamber 30B through the drying connection pipe 140B, and the combustion chamber 30B can also be dried directly by the combustion gas.

JP, 2009-249436, A JP, 2010-006948, A JP, 2009-249437, A

  The combustion chambers alternately arranged with the carbonization chambers in the furnace width direction are partitioned into combustion chambers by partition walls in order to perform temperature control in the furnace length direction. From the viewpoint of uniform heating of the furnace body, it is desirable to provide drying holes in all of the defined combustion chambers and to supply and dry the combustion gas in the furnace body drying after furnace setting, but the drying holes It can not be provided in all of the compartmented combustion chambers. Further, from the viewpoint of improving the workability of the operation of closing the drying holes after drying of the furnace body, it is preferable that the number of drying holes be small.

  The technique disclosed in Patent Document 3 is effective in terms of uniform heating of the furnace body and reduction of drying holes. However, in the operation of the coke oven, when the technology disclosed in Patent Document 3 is adopted, in order to charge the coal from the coal inlet and the furnace top becomes a passage for the coal-charged vehicle, the coke oven Before operation, it was necessary to always remove the drying connection pipe attached to the coal loading port at the top of the furnace, and the removal of this drying connection pipe sometimes required much labor.

  Therefore, in view of such circumstances, the present invention can reduce the number of drying holes, and in drying of the furnace body after construction, the combustion gas is allowed to flow into all of the partitioned combustion chambers to directly burn the combustion gas. It is an object of the present invention to provide a chamber type coke oven which can be heated and dried.

  The present inventors diligently studied methods for solving the above problems. As a result, it was conceived to provide a dry communication hole in the ceiling wall which allows the combustion gas to flow into the other combustion compartments partitioned in the furnace length direction. It has also been found that by arranging the dry communication holes adjacent to the dry holes or other dry communication holes, it is possible to supply combustion gas to all of the partitioned combustion compartments and to heat and dry the combustion gas directly.

The summary of the present invention made through such studies is as follows.
(1) In a chamber type coke oven in which a combustion gas for drying the furnace body after furnace setting is made to flow from the carbonization chamber into the combustion chamber through the drying holes provided in the ceiling wall, it is partitioned in the furnace length direction In the ceiling wall of the upper part of the combustion chamber, a drying communication hole is provided for letting the combustion gas flowing from the drying hole into the combustion chamber flow into the other combustion chamber, and the drying communication holes are adjacent to each other. Are provided in communication with each other, and are provided adjacent to at least the drying hole.
(2) Further, one or two or more dry communication holes are provided adjacent to each other in the furnace length direction following the dry communication hole provided adjacent to the dry hole. The chamber type coke oven as described in (1).

  According to the present invention, the amount of closing operation of the drying holes can be reduced, and the combustion gas can be directly supplied to all of the partitioned combustion chambers, and the temperature rising and drying can be performed.

It is a figure which shows the basic structure of a chamber-type coke oven. (A) shows a cross-sectional structure in the furnace length direction, and (b) shows a part of the cross-sectional structure in the furnace width direction. It is sectional drawing cut | disconnected in the cross-section containing a carbonization chamber, a combustion chamber, and a drying hole in the furnace width direction of a coke oven. It is a partial section perspective view including the section of the furnace length direction of the furnace top of a coke oven. (A) shows the partial cross section perspective view containing the AA cross section of FIG. 2, (b) shows the partial cross section perspective view including the B-B cross section of FIG. It is sectional drawing of the combustion chamber of the furnace length direction of a coke oven. It is sectional drawing of the combustion chamber of the furnace length direction of the coke oven which has a drying connecting pipe. It is a partially sectioned perspective view including the section of the furnace length direction of the furnace top of the coke oven which has a dry connection hole. It is sectional drawing of the combustion chamber of the oven length direction of the coke oven which has a dry connection hole.

  The chamber-type coke oven (hereinafter also referred to as "the coke oven according to the present invention") of the present invention burns the combustion gas for drying the furnace body after the furnace construction from the carbonization chamber through the drying holes provided in the ceiling wall. A chamber furnace type coke oven adapted to flow into a chamber, and the combustion gas flowing from the drying hole into the combustion chamber is made to another combustion chamber on the ceiling wall of the upper portion of the combustion chamber divided in the furnace length direction. It is characterized in that a dry communication hole to be introduced is provided.

Specifically, the coke oven of the present invention is adjacent to at least the drying hole to allow the combustion gas to flow from the combustion chamber directly communicating with the drying hole to one or more other combustion chambers different from the combustion chamber. The dry communication holes are provided, and if necessary, one or more dry communication holes are provided adjacent to each other in the furnace length direction following the dry communication holes.
As a result, the amount of closing operation of the drying holes can be reduced, and since the drying communication pipe is not required at the top of the coke oven, the labor involved in the installation and removal of the drying communication pipe can be reduced.

Next, the coke oven of the present invention will be described with reference to the drawings, but the basic structure of the coke oven of the present invention is the same as that of the conventional chamber-type coke oven shown in FIG.
First, regarding the coke oven of the present invention, the relationship between the drying hole and the installation location of the drying connection hole will be described using the partially enlarged view of the furnace top. FIG. 6 is a partial cross-sectional perspective view including a cross-section in the furnace length direction of a furnace top portion of a coke oven having a dry communication hole, and a partial cross-sectional perspective view including an A-A cross section of FIG. is there. As shown in FIG. 6, in the ceiling wall 90, the dry hole 110 penetrating in the furnace width direction is provided in the blow hole 100 in the upper part of the combustion chamber 30. Then, the communication drying holes 150 are provided adjacent to the drying holes 110 so that the flow holes 100 communicate with each other.

  Next, FIG. 7 shows a cross-sectional view of the combustion chamber in the furnace length direction of the coke oven having the dry communication hole. FIG. 7 shows a cross section of the combustion chamber including the drying hole 110 and the drying communication hole 150 shown in FIG. 6, and the dotted line indicates the coal of the carbonizing chamber 40 located on the back side in the paper depth direction (furnace width direction). The vicinity of the furnace top including the inlet 80 is shown. Similar to the conventional coke oven shown in FIGS. 4 and 5, in a part of the combustion chamber of the combustion chamber 30, the combustion gas is supplied to the combustion chamber from the drying hole 110 provided in the upper flow hole 100, The combustion chamber is heated and dried.

  In the coke oven shown in FIG. 7, a drying communication hole 150 is provided adjacent to the drying hole 110 to allow the combustion gas flowing from the drying hole 110 into the combustion chamber to flow into another combustion chamber partitioned in the furnace length direction. . For example, the drying hole provided at a place where the tip of the plugging jig is difficult to reach such as the drying hole 110A in FIG. 4 is eliminated, and adjacent to the drying hole 110B provided in the blow hole 100C at the top of the combustion chamber 30C. A dry communication hole 150A is provided in the ceiling wall 90A. As a result, the combustion gas flowing into the combustion chamber 30C from the flow hole 100C is utilized for heating and drying the combustion chamber 30C, and is allowed to flow into the combustion chamber 30A via the drying communication hole 150A to raise the temperature of the combustion chamber 30A. Use for drying.

  Furthermore, in the coke oven shown in FIG. 7, in the conventional coke oven shown in FIG. 4, the combustion gas can be made to flow also into the combustion chamber 30B which could not be dried directly by the combustion gas. A drying communication hole 150B is provided in the ceiling wall 90B adjacent to the drying hole 110C provided in the flow hole 100D in the upper part of the combustion chamber 30D. As a result, the combustion gas flowing from the flow hole 100D flows into the flow hole 100E via the dry communication hole 150B.

Then, a drying communication hole 150C is provided in the ceiling wall 90C adjacent to the drying communication hole 150B. As a result, the combustion gas flowing from the dry communication hole 150B into the flow hole 100E flows into the flow hole 100B via the dry communication hole 150C, and the temperature in the combustion chamber 30B is heated and dried.
As described above, since the combustion gas flowing from the carbonization chamber can be introduced to each combustion chamber through the drying connection hole, the combustion chamber that can not be directly dried can also be dried by the combustion gas.

  Therefore, in the coke oven of the present invention, the dry communication holes are provided adjacent to each other so that adjacent flow holes provided in the ceiling wall of the upper part of the combustion chamber communicate with each other, so that the tip of the plugging jig is Since it is not necessary to provide a drying hole at a hard-to-reach location, the drying hole can be reduced, and furthermore, the combustion gas can be supplied to and dried in all the combustion compartments partitioned in the furnace length direction. Further, in the coke oven of the present invention, since the inflow of the combustion gas from the combustion chamber to the other combustion chamber is performed by the dry communication hole provided in the ceiling wall, the seal of the carbonization chamber and the combustion chamber is only by the blockade of the drying hole. You can keep

  Next, the present invention will be described sequentially for the necessary requirements and the preferred requirements, but first, the drying holes through which the combustion gas flows from the carbonization chamber to the combustion chamber will be described.

(Drying hole)
The drying hole which makes the combustion gas for drying a furnace body flow into a combustion chamber from a carbonization chamber after furnace construction is provided in the ceiling wall which covers a combustion chamber and a carbonization chamber. As shown in FIGS. 2 and 3, the drying holes 110 are provided in the ceiling wall 90 above the top of the charged coal in the carbonizing chamber 40. Specifically, the drying hole 110 is provided in the ceiling wall 90 near the ceiling of the carbonization chamber 40 directly below the coal inlet 80 communicating with the carbonization chamber 40 and the opening 120 of the riser. The drying hole 110 is provided such that the flow hole 100 of the combustion chamber 30 is in communication with the portion immediately below the coal inlet 80. Thus, the combustion gas can flow from the carbonization chamber 40 into the combustion chamber 30 through the drying holes 110 at the time of furnace body drying after furnace construction, and the furnace body can be dried.

  The hole size of the drying hole 110 is not particularly limited, and can be 50 to 100 mm in diameter according to the size of the coke oven. Further, the shape of the drying hole is not particularly limited, and can be circular in a cross section perpendicular to the axial direction of the drying hole. Moreover, it is preferable to make the diameter by the side of the blow hole 100 larger with respect to the diameter of the drying hole 110 directly under the coal loading port 80 in the said cross section. As a result, the plug brick can be prevented from falling off the blow hole 100 when closing the drying hole 110. If the drying holes 110 are provided such that the flow inlets 100 of the coal inlet 80 and the openings 120 of the rising pipe communicate with the flow holes 100 of the combustion chamber 30, the drying holes 110 are straight in the furnace width direction. Not limited to this, as in the drying hole 110D shown in FIG. 6, the drying hole may be bent in an L-shape in the furnace length direction from the furnace width direction.

(Dry contact hole)
Next, a dry communication hole will be described which allows the combustion gas flowing from the drying hole into the combustion chamber divided in the furnace length direction to flow into the other combustion chamber.

  The dry communication holes are provided in the ceiling wall at least adjacent to the dry holes and such that the adjacent flow holes communicate with each other. Providing the dry communication hole adjacent to the dry hole means providing a difference in height between the dry communication hole and the dry hole within ± 20% of the furnace height in the furnace height direction. Preferably, the heights of the holes and the drying holes are the same. For example, as shown in FIG. 7, the dry communication hole 150A is provided in the ceiling wall 90A above the turning point of the combustion gas of the combustion chamber 30C, 30A so as to have the same height as the dry hole 110B.

  In addition, the dry communication hole can be provided adjacent to the dry communication hole provided adjacent to the dry hole, with one or two or more dry communication holes adjacent in the furnace length direction. Providing the dry communication hole adjacent to the dry communication hole means providing the difference between the dry communication hole and the dry communication hole within ± 20% of the furnace height in the furnace height direction, Preferably, the dry communication holes and the dry communication holes have the same height. For example, as shown in FIG. 7, drying communication is made to the ceiling wall 90C above the turning point of the combustion gas of the combustion chamber 30D, 30B, adjacent to the drying communication hole 150B provided adjacent to the drying hole 110C. A dry communication hole 150C is provided so that the height is the same as the hole 150B.

  Furthermore, the dry communication hole may be provided adjacent to the dry communication hole 150C to the combustion chamber 30A. However, as shown in FIG. 7, the combustion chamber 30C in direct communication with the drying hole 110B is closer to the combustion chamber 30A than the combustion chamber 30D in direct communication with the drying hole 110C. In consideration of gas utilization efficiency, pressure loss, uniformity of furnace drying temperature, etc., it is preferable to provide a drying communication hole adjacent to the drying hole 110B to allow the combustion gas to flow into the combustion chamber 30A.

  Further, in order to allow the combustion gas to flow into the combustion chamber 30A, it is impossible to provide the drying communication hole 150A adjacent to the drying hole 110B because of the structure of the coke oven, and drying to the combustion chamber 30A adjacent to the drying communication hole 150C. When the communication holes are provided, for example, the diameter of the drying holes 110D may be larger than the diameter of the other drying holes to adjust the flow rate of the combustion gas.

  The hole size of the dry communication hole is not particularly limited, and can be adjusted according to the size of the coke oven, and can be equal in diameter to the dry hole, for example, 50 to 100 mm in diameter. Further, the shape of the dry communication hole is not particularly limited, but may be circular in a cross section perpendicular to the axial direction of the dry communication hole. Preferably, the cross section has the same shape and size in the axial direction of the dry communication hole.

  In FIG. 7 used in the description of the coke oven according to the present invention, two combustion chambers (combustion chambers 30A and 30B) not directly communicating with the drying holes are provided between the combustion chambers directly communicating with the drying holes. In a real coke oven, there may be one combustion chamber or three or more combustion chambers not in direct communication with the drying hole between the combustion chambers in direct communication with the drying hole. In such a case, in consideration of the utilization efficiency of the combustion gas, the pressure loss, the uniformity of the furnace body drying temperature, etc., it may be determined which drying hole is adjacent to the drying communication hole.

  In addition, in the case where there is one combustion chamber not directly communicating with the drying hole between the combustion chambers directly communicating with the drying hole, one drying communication hole is provided adjacent to the drying hole, that is, the furnace It is possible to supply the combustion gas directly to all of the partitioned combustion compartments and to heat and dry it without providing one or more dry communication holes in the longitudinal direction adjacent to each other.

  Since the coke oven of the present invention does not block the dry communication hole after drying of the furnace body, the burden of closing work does not increase, but the coke oven is operated in a state where the combustion chamber and the other combustion chamber are communicated. . However, since the flow rate of the combustion gas flowing from the heat storage chamber into the combustion chamber can be adjusted between the combustion chambers, the moving direction of the combustion gas between the combustion chambers can be adjusted, and as a result, the temperature control between the combustion chambers You can

  Further, in the coke oven of the present invention, since the dry communication hole is provided in the ceiling wall, the combustion gas reaches the dry communication hole at the time of coke operation as compared with the case where the dry communication hole is provided near the turning point of the combustion chamber. The amount of combustion gas flowing between the combustion chambers is small, and the obstacle to temperature control is slight.

  According to the present invention, the amount of closing operation of the drying holes can be reduced, and the combustion gas can be directly supplied to all of the partitioned combustion chambers, and the temperature rising and drying can be performed. Thus, the present invention has high industrial applicability.

Reference Signs List 10 hearth supporting structure 20 heat storage chamber 30 combustion chamber 30A to 30D combustion chamber 40 carbonization chamber 50 fuel gas supply passage 60 air supply passage 70 flue 80, 80A, 80B coal charging inlet 90 ceiling wall 100, 100A to 100E flow hole 110, 110A to 110D drying hole 120 opening of riser 130 130 partition wall 140A, 140B drying communication tube 150, 150A to 150C drying communication hole

Claims (2)

In a chamber type coke oven, a combustion gas for drying the furnace body after furnace construction is made to flow from the carbonization chamber into the combustion chamber through the drying holes provided in the ceiling wall,
In the ceiling wall of the upper part of the combustion chamber divided in the furnace length direction, a drying communication hole is provided for letting the combustion gas flowing from the drying hole into the combustion chamber flow into another combustion chamber, and the drying communication hole is A chamber furnace type coke oven provided so as to allow adjacent flow holes to communicate with each other and at least adjacent to the drying holes.   Furthermore, one or more dry communication holes are provided adjacent to each other in the furnace length direction following the dry communication hole provided adjacent to the dry hole. Chamber furnace type coke oven as described.

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