JP2017025153A - Chamber oven-type coke oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chamber oven-type coke oven which can reduce drying holes and can rise temperature and dry with combustion gas directly by flowing the combustion gas into all of sectioned combustion compartments in furnace body drying after furnace construction.SOLUTION: In a chamber oven-type coke oven flowing combustion gas to dry a furnace body after furnace construction from a coke oven chamber to a combustion chamber through drying holes provided to a ceiling wall, drying communication holes making the combustion gas flowed from the drying hole into a combustion compartment flow into other combustion compartment are provided to an upper ceiling wall of the combustion compartment sectioned to a furnace long direction. The drying communication holes are provided so that neighboring flue holes are communicated each other and provided at least neighboring to the drying hole.SELECTED DRAWING: Figure 7

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 that serves as a passage for combustion gas when the furnace body is dried after the construction and before operation. It is an invention.

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

  Fuel gas is sent from the fuel gas supply path 50 to the heat storage chamber 20, and air is sent from the air supply path 60. Air and fuel gas are preheated and then burned in the combustion chamber 30. The combustion exhaust gas passes through the heat storage chamber 20, exchanges heat with the heat storage bricks, and then is discharged from the chimney through the flue 70. By the combustion of the gas in the combustion chamber 30, the carbonization chambers 40 arranged adjacent to the combustion chamber 30 are heated, and the coal charged from the coal charging port 80 is dry-distilled in the carbonization chamber 40 to produce coke. To manufacture.

  Moreover, the combustion chamber 30 and the carbonization chamber 40 are covered with a ceiling wall 90, and the above-described coal charging inlet 80 and the coke oven generated in the carbonization chamber 40 are disposed above the carbonization chamber 40 in the ceiling wall 90. A riser (not shown) for exhausting gas is provided. In addition, a flue hole 100 is provided in the upper part of the combustion chamber 30 in the ceiling wall 90 for checking the combustion state inside the combustion chamber 30, measuring the temperature, and adjusting the combustion.

  The furnace body equipment of such a coke oven is constructed by stacking refractory bricks, but the furnace body after the construction is moist due to moisture contained in the refractory brick itself and joint mortar. The coke oven needs to be dried by raising the temperature of the furnace body from normal temperature to a temperature at which it can be operated after the construction and before operation. In this furnace body 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, and the entire furnace body is heated and dried. To do.

  The combustion gas is supplied from the carbonization chamber 40 to the combustion chamber 30 by providing a drying hole in the furnace wall (ceiling wall) separating the two chambers, and allowing the combustion gas to flow into the combustion chamber 30 through the drying hole. . Next, the installation location of the drying hole 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 a carbonization chamber, a combustion chamber, and a drying hole in the width direction of the coke oven. As shown in FIG. 2, the drying hole 110 communicates with a ceiling wall 90 that divides the flue hole 100 at the upper part of the combustion chamber 30 and directly below the coal charging inlet 80 at the upper part of the carbonization chamber 40. It is provided as follows. The arrows indicate the flow of combustion gas in the furnace body drying, and the combustion gas supplied to the carbonization chamber 40 flows into the combustion chamber 30 via the drying holes 110.

  FIG. 3 shows a partial cross-sectional perspective view including a cross section in the furnace length direction of the top of the coke oven. 3A shows a partial cross-sectional perspective view including the AA cross section of FIG. 2, and FIG. 3B shows a partial cross-sectional perspective view including the BB cross section of FIG. FIG. 3 is a partially enlarged view of the top of the coke oven. As shown in FIG. 3A, the flue hole 100 in the upper part of the combustion chamber 30 in the ceiling wall 90 is formed in the furnace width direction. A drying hole 110 is provided so as to penetrate therethrough. Then, as shown in FIG. 3 (b), the drying hole 110 is provided in the ceiling wall 90 so as to penetrate in the furnace width direction directly below the coal charging port 80 and the riser opening 120 at the upper part of the carbonization chamber 40. Is provided.

  Moreover, the flow of the combustion gas in furnace body drying is shown using the sectional view of the combustion chamber in the furnace length direction of the coke oven. FIG. 4 shows a cross-sectional view of the combustion chamber in the 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 depth direction of the paper (furnace width direction). The vicinity of the furnace top including the inlet 80 is shown. The combustion chamber 30 is usually divided into partition chambers 130 by about 30 combustion chambers in order to perform temperature control in the furnace length direction. In FIG. 4, the combustion chambers 30 </ b> A and 30 </ b> B partitioned by the partition wall 130 are illustrated.

  For example, the flow of the combustion gas in the combustion chamber 30A in the combustion chamber is such that the combustion gas flows into the combustion chamber 30A from the drying hole 110A provided in the upper hole 100A of the combustion chamber 30A and flows out into the heat storage chamber 20. To do. Thereby, the combustion chamber 30A is heated and dried.

  Here, the combustion gas is not flowed into the combustion chamber 30B. This is due to the following reason. In the coke operation, the carbonization chamber 40 and the combustion chamber 30 are required to have gas sealing properties. Therefore, after drying the furnace body after the furnace building, the coal chamber 40 and the combustion chamber 30 are dried using a plugging jig from the coal inlet 80 and the opening 120 of the rising pipe. The plug 110 is closed by inserting a plug brick into the hole 110. Therefore, the drying hole 110 is provided directly under the coal charging inlet 80 and the rising pipe opening 120. However, in the cross section including the combustion chamber 30B in the furnace width direction, the coal charging port 80 and the rising pipe opening 120 are not provided, and therefore the drying hole 110 cannot be provided. Therefore, in the conventional coke oven, there are combustion chambers such as the combustion chamber 30B that cannot be heated and dried directly with combustion gas.

  On the other hand, the blockage operation of inserting the plug brick into the drying hole 110 after drying the furnace body after the building is an operation performed in a state of being exposed to high-temperature hot air, and thus the work load is large. Therefore, it is desired to make it easy to close the drying hole, and to prevent the leakage of gas between the combustion chamber and the carbonization chamber without causing the plug brick to fall off even when a long-term coke oven is used. The following techniques have been proposed.

  For example, Patent Document 1 discloses that a mortar pool space is installed in the middle part of a dry plug in which a plug brick is inserted into a dry plug receiving brick, so that the mortar of the mortar pool solidifies and performs a sealing function. A technique for preventing the drop-out of the image is disclosed.

  Further, in Patent Document 2, a restriction portion and a depression portion are provided in the drying hole, and the restriction portion prevents the plug brick from dropping through the drying hole, and the depression portion is opposite to the restriction direction of the restriction portion. A technique for preventing the leakage of gas between the combustion chamber and the carbonization chamber is disclosed by preventing the plug bricks from falling off and thereby supporting the drying holes mechanically with the plug bricks. ing.

  As described above, various techniques for improving the workability of the drying hole closing work have been proposed. In order to reduce the labor, it is preferable to reduce the number of drying holes. It is preferable to eliminate a drying hole provided at a location where the tip of the plugging jig is difficult to reach, such as the drying hole 110A shown in FIG.

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

  FIG. 5 shows a cross-sectional view of the combustion chamber in the furnace length direction of a coke oven having a dry communication pipe, and shows the flow of combustion gas of the technique disclosed in Patent Document 3. As in the conventional coke oven shown in FIG. 4, in some of the combustion chambers 30, combustion gas is supplied to the combustion chambers from the drying holes 110 provided in the upper flue holes 100. Dry at elevated temperature. In addition, the dotted line has shown the furnace top vicinity containing the coal charging inlet 80 of the carbonization chamber 40 located in the back | inner side in the paper surface depth direction (furnace width direction).

  In the coke oven shown in FIG. 5, the drying hole provided at a position where the tip of the plugging jig is difficult to reach, such as the drying hole 110 </ b> A shown in FIG. 4, is eliminated, and the drying connecting pipe is formed at the opening of the flue hole 100 </ b> A of the combustion chamber 30 </ b> A. One end of 140A is connected, and the other end is connected to the coal charging inlet 80A of the carbonization chamber 40 located on the back side in the depth direction of the drawing. As a result, even if the number of drying holes 110A is reduced, the combustion gas can be guided from the carbonization chamber 40 to the combustion chamber 30A through the drying communication pipe 140A, so that the combustion chamber 30A can be heated and dried.

  Furthermore, in the coke oven shown in FIG. 5, the combustion gas can be caused to flow into the combustion chamber 30B that could not be directly dried with the combustion gas in the conventional coke oven shown in FIG. One end of the drying communication pipe 140B is connected to the opening of the flue hole 100B in the upper part of the combustion chamber 30B, and the other end is connected to the coal charging inlet 80B of the carbonization chamber 40 located on the back side in the depth direction of the drawing. Thereby, combustion gas can be guide | induced to the combustion chamber 30B through the drying communication pipe | tube 140B from the carbonization chamber 40, and the combustion chamber 30B can also be directly dried with combustion gas.

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

  Each combustion chamber arranged alternately with the carbonization chamber in the furnace width direction is divided into combustion chambers by partition walls in order to perform temperature control in the furnace length direction. In the drying of the furnace body after the construction of the furnace, 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 dry them by supplying combustion gas. It cannot be provided in all of the partitioned combustion chambers. From the viewpoint of improving the workability of the drying hole closing operation after drying the furnace body, it is preferable that the number of drying holes is 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, in order to charge coal from the coal charging inlet and because the top of the furnace serves as a passage for the coal charging vehicle, when the technique disclosed in Patent Document 3 is adopted, Prior to the operation, it was necessary to remove the drying connecting pipe attached to the coal inlet at the top of the furnace, and removal of this drying connecting pipe sometimes required a lot of labor.

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

  The present inventors diligently studied a method for solving the above-described problems. As a result, the idea was to provide a dry communication hole in the ceiling wall that allows combustion gas to flow into another combustion chamber partitioned in the furnace length direction. Then, it has been found that by arranging the drying communication hole adjacent to the drying hole or another drying communication hole, the combustion gas can be supplied to all of the partitioned combustion chambers and directly heated and dried with the combustion gas.

The gist of the present invention made through such examination is as follows.
(1) In a chamber-type coke oven in which combustion gas for drying the furnace body after building is allowed to flow from the carbonization chamber to the combustion chamber through a drying hole provided in the ceiling wall, the combustion chamber is partitioned in the furnace length direction. In the upper ceiling wall of the combustion chamber, there is provided a drying communication hole for allowing the combustion gas flowing into the combustion chamber from the drying hole to flow into another combustion chamber. Are provided so as to communicate with each other and at least adjacent to the drying hole.
(2) Further, following the drying communication hole provided adjacent to the drying hole, one or more drying communication holes are provided adjacent to each other in the furnace length direction. The chamber furnace type coke oven according to (1).

  According to the present invention, it is possible to reduce the amount of work for closing the drying holes, and it is possible to supply the combustion gas directly to all of the partitioned combustion chambers and to dry at elevated temperature.

It is a figure which shows the basic structure of a chamber type coke oven. (A) shows the 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 by 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 cross section perspective view containing the cross section of the furnace length direction of the furnace top part 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 containing the BB cross section of FIG. It is sectional drawing of the combustion chamber of the 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 dry communication pipe. It is a partial cross section perspective view containing the cross section of the furnace length direction of the furnace top part of the coke oven which has a dry communication hole. It is sectional drawing of the combustion chamber of the furnace length direction of the coke oven which has a dry communication hole.

  The chamber-type coke oven of the present invention (hereinafter sometimes referred to as “the coke oven of the present invention”) burns combustion gas for drying the furnace body after building from the carbonization chamber through the drying holes provided in the ceiling wall. It is a chamber-type coke oven designed to flow into the chamber, and the combustion gas that has flowed into the combustion chamber from the drying hole is transferred to other combustion chambers on the ceiling wall at the top of the combustion chamber partitioned in the furnace length direction. It is characterized in that a dry communication hole for inflow is provided.

Specifically, the coke oven of the present invention is at least adjacent to the drying hole in order to allow combustion gas to flow from the combustion chamber directly communicating with the drying hole to one or more combustion chambers different from the combustion chamber. The dry communication holes are provided, and if necessary, one or two or more dry communication holes are provided adjacent to the dry communication hole in the furnace length direction.
As a result, the amount of clogging work for the drying hole can be reduced, and the drying communication pipe is not required at the top of the coke oven, so that the labor involved in installing and removing the drying communication pipe can be reduced.

Next, the coke oven of the present invention will be described with reference to the drawings. 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 positions of the drying holes and the drying communication holes will be described with reference to a partially enlarged drawing of the top of the furnace. 6 is a partial cross-sectional perspective view including a cross section in the furnace length direction of the top of a coke oven having a dry communication hole, and a partial cross-sectional perspective view including a cross section AA in FIG. 2 in the case of having a dry communication hole. is there. As shown in FIG. 6, a drying hole 110 penetrating in the furnace width direction is provided in the flue hole 100 in the upper part of the combustion chamber 30 in the ceiling wall 90. Then, a communication drying hole 150 is provided adjacent to the drying hole 110 so that the flue holes 100 communicate with each other.

  Next, FIG. 7 shows a cross-sectional view of the combustion chamber in the furnace length direction of a coke oven having a drying 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 in the carbonization chamber 40 located on the back side in the depth direction of the paper (furnace width direction). The vicinity of the furnace top including the charging port 80 is shown. As in the conventional coke oven shown in FIGS. 4 and 5, in some of the combustion chambers 30, combustion gas is supplied to the combustion chambers from the drying holes 110 provided in the upper flue holes 100. The combustion chamber is heated to dry.

  In the coke oven shown in FIG. 7, a drying communication hole 150 is provided adjacent to the drying hole 110 for allowing the combustion gas flowing into the combustion chamber from the drying hole 110 to flow into another combustion chamber partitioned in the furnace length direction. . For example, a drying hole provided in 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 flue hole 100C in the upper part of the combustion chamber 30C. A drying communication hole 150A is provided in the ceiling wall 90A. As a result, the combustion gas flowing into the combustion chamber 30C from the flue hole 100C is used for heating and drying the combustion chamber 30C, and flows into the combustion chamber 30A via the drying communication hole 150A, and the temperature of the combustion chamber 30A is increased. Used for drying.

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

Then, the dry communication hole 150C is provided in the ceiling wall 90C adjacent to the dry communication hole 150B. As a result, the combustion gas that has flowed into the flue hole 100E from the drying communication hole 150B flows into the flue hole 100B via the drying communication hole 150C, and the combustion chamber 30B is heated to dry.
Thus, since the combustion gas which flowed in from the carbonization chamber can be led to each combustion chamber through the drying communication hole, the combustion chamber which could not be directly dried can also be dried with the combustion gas.

  Therefore, in the coke oven of the present invention, the tip of the plugging jig is provided by providing the dry communication holes adjacent to each other so that the adjacent flue holes provided in the ceiling wall at the top of the combustion chamber communicate with each other. Since there is no need to provide drying holes at places that are difficult to reach, the drying holes can be reduced, and further, combustion gas can be supplied to all of the combustion chambers partitioned in the furnace length direction for drying. Further, in the coke oven of the present invention, since the inflow of the combustion gas from the combustion chamber to other combustion chambers is performed by the drying communication hole provided in the ceiling wall, the carbonization chamber and the combustion chamber are sealed only by closing the drying hole. Can keep.

  Next, the present invention will be described in order of necessary requirements and preferable requirements. First, a dry hole through which combustion gas flows from the carbonization chamber to the combustion chamber will be described.

(Dry hole)
Drying holes through which the combustion gas for drying the furnace body after the construction of the furnace flows into the combustion chamber from the carbonization chamber are provided in the ceiling wall covering the combustion chamber and the carbonization chamber. As shown in FIG. 2 and FIG. 3, the drying hole 110 is provided in the ceiling wall 90 above the upper part of the charging coal in the carbonization chamber 40. Specifically, the drying hole 110 is provided in the ceiling wall 90 in the vicinity of the ceiling of the carbonization chamber 40 immediately below the coal charging port 80 leading to the carbonization chamber 40 and the opening 120 of the rising pipe. The drying hole 110 is provided so that the directly under the coal charging port 80 and the flue hole 100 of the combustion chamber 30 communicate with each other. As a result, the combustion gas flows from the carbonization chamber 40 into the combustion chamber 30 via the drying holes 110 when the furnace body is dried after the building, 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 depending on the size of the coke oven. Further, the shape of the drying hole is not particularly limited, and can be a circular shape in a cross section perpendicular to the axial direction of the drying hole. Moreover, it is preferable that the diameter of the cross section be larger than the diameter of the drying hole 110 immediately below the coal charging port 80 on the flew hole 100 side. Thereby, it is possible to prevent the plug brick when closing the drying hole 110 from dropping into the flew hole 100. The drying hole 110 is a linear drying hole in the furnace width direction as long as it is provided so that the coal inlet 80 and the directly below the rising pipe opening 120 communicate with the flue hole 100 of the combustion chamber 30. Not limited to this, a drying hole bent in an L-shape from the furnace width direction to the furnace length direction may be used, such as a drying hole 110D shown in FIG.

(Dry communication hole)
Next, the drying communication hole through which the combustion gas flowing from the drying hole into the combustion chamber partitioned in the furnace length direction flows into the other combustion chambers will be described.

  The drying communication hole is provided on the ceiling wall so as to be adjacent to at least the drying hole and so that the adjacent flue holes communicate with each other. Providing the drying communication hole adjacent to the drying hole means that the difference in height between the drying communication hole and the drying hole is within ± 20% of the furnace height in the furnace height direction. It is preferable that the hole and the drying hole have the same height. For example, as shown in FIG. 7, the drying communication hole 150A is provided on the ceiling wall 90A above the turning point of the combustion gas in the combustion chambers 30C, 30A so as to have the same height as the drying hole 110B.

  In addition, the dry communication hole can be provided adjacent to the dry communication hole provided adjacent to the dry hole and adjacent to one or more dry communication holes in the furnace length direction. Providing the dry communication hole adjacent to the dry communication hole is to provide a difference in height between the dry communication hole and the dry communication hole within ± 20% of the furnace height in the furnace height direction. It is preferable that the dry communication hole and the dry communication hole have the same height. For example, as shown in FIG. 7, adjacent to the drying communication hole 150B provided adjacent to the drying hole 110C, and further to the ceiling wall 90C above the turning point of the combustion gas in the combustion chambers 30D, 30B. The dry communication hole 150C is provided so as to have the same height as the hole 150B.

  Further, a dry communication hole may be provided up to the combustion chamber 30A adjacent to the dry communication hole 150C. However, as shown in FIG. 7, when the combustion chamber 30C directly connected to the drying hole 110B is closer to the combustion chamber 30A than the combustion chamber 30D directly connected to the drying hole 110C, the combustion is performed. In consideration of gas utilization efficiency, pressure loss, uniformity of furnace body drying temperature, etc., it is preferable to provide a drying communication hole adjacent to the drying hole 110B so that the combustion gas flows into the combustion chamber 30A.

  In addition, in order to allow 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 the air is dried up to the combustion chamber 30A adjacent to the drying communication hole 150C. When providing the communication hole, for example, the diameter of the drying hole 110D may be made larger than the diameter of the other drying hole 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 the same diameter as the dry hole, for example, 50 to 100 mm. 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. Moreover, it is preferable that the said cross section is made into the shape and size equivalent to the axial direction of a dry communication hole.

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

  Further, when there is one combustion chamber that is not in direct communication with the drying hole between the combustion chambers that are in direct communication with the drying hole, by providing one drying communication hole adjacent to the drying hole, that is, the furnace Without providing one or two or more drying communication holes adjacent to each other in the longitudinal direction, the combustion gas can be directly supplied to all of the partitioned combustion chambers, and the temperature can be dried.

  The coke oven according to the present invention does not close the drying communication hole after drying the furnace body, so that the burden of closing work does not increase, but the coke oven is operated in a state where the combustion chamber and other combustion chambers are in communication. . However, since the flow rate of the combustion gas flowing from the heat storage chamber into the combustion chambers can be adjusted between the combustion chambers, the movement direction of the combustion gas between the combustion chambers can be adjusted, and as a result, the temperature control between the combustion chambers Can do.

  Moreover, in the coke oven of the present invention, since the drying communication hole is provided in the ceiling wall, the combustion gas reaches the drying communication hole during the coke operation, compared with the case where the drying communication hole is provided near the turning point of the combustion chamber. Therefore, the amount of combustion gas flowing between the combustion chambers is small, and there is little obstacle to temperature control.

  According to the present invention, it is possible to reduce the amount of work for closing the drying holes, and it is possible to supply the combustion gas directly to all of the partitioned combustion chambers and to dry at elevated temperature. Therefore, the present invention has high industrial applicability.

DESCRIPTION OF SYMBOLS 10 Hearth support structure 20 Heat storage chamber 30 Combustion chamber 30A-30D Combustion chamber 40 Carbonization chamber 50 Fuel gas supply path 60 Air supply path 70 Chimney 80, 80A, 80B Coal loading inlet 90 Ceiling wall 100, 100A-100E Flue hole 110, 110A-110D Drying hole 120 Opening of rising pipe 130 Partition 140A, 140B Drying communication pipe 150, 150A-150C Drying communication hole

Claims (2)

In the chamber-type coke oven designed to allow the combustion gas for drying the furnace body after building to flow from the carbonization chamber to the combustion chamber through the drying holes provided in the ceiling wall,
The ceiling wall at the top of the combustion chamber partitioned in the furnace length direction is provided with a drying communication hole for allowing the combustion gas flowing into the combustion chamber from the drying hole to flow into another combustion chamber. The chamber type coke oven is provided so that adjacent flue holes communicate with each other and at least adjacent to the drying hole.   Further, one or more drying communication holes are provided adjacent to each other in the furnace length direction following the drying communication hole provided adjacent to the drying hole. The described chamber furnace type coke oven.

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