JP2012184309A - Temperature rise method for hot re-laid oven wall of coke oven - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temperature rise method for a hot re-laid oven wall of a coke oven by which temperature of an oven wall re-laid by partial hot repair of a coke oven can be easily and uniformly risen without using a large number of man-hour and a special heating means, and as a result, joint loss and crack generation in the bricks of the repaired part is prevented.SOLUTION: After hot re-laying of bricks of flues 21a, 21b in a chamber coke oven has been performed and until the temperature rise of the re-laid bricks is completed, the temperature rise of the re-laid bricks is performed by: making apertures 35 in a part of lower portions of the oven wall bricks of the flues 21a, 21b subjected to the brick re-laying and closing flue ports 22, 23 which are fuel gas or air supply openings of the flues 21a, 21b; introducing hot air 41 from a back non-re-laid part, which is caused to flow into a carbonization chamber 10a adjacent to the flues 21a, 21b, into the flues 21a, 21b through the apertures 35; and discharging the hot air 41 rising within the flues 21a, 21b, from flue inspection holes 30 disposed just above the flues 21a, 21b.

Description

  The present invention relates to a method for raising a temperature of a transshipment furnace wall when a carbonization chamber furnace wall of a chamber-type coke oven is partially transshipped and repaired hot.

FIG. 7 is a longitudinal sectional view in the direction of the furnace group showing the furnace body structure of the coke oven, and FIG. 8 is a horizontal sectional view showing the structure in the vicinity of the kiln entrance of the coke oven.
As shown in FIGS. 7 and 8, the chamber-type coke oven is configured to receive carbon and heat-dry carbonize, and to carbonize the coal charged in the carbonization chamber 10 by burning fuel gas. Combustion chambers 20 that give heat are alternately arranged, and heat storage chambers 40 filled with heat storage bricks are connected to the respective combustion chambers 20.

Each combustion chamber 20 is configured to be partitioned into a plurality of flues 21 by partition wall bricks 26 in the furnace length direction, and the furnace wall bricks 25 on both sides thereof face the carbonization chamber 10 and are in direct contact with coal. .
As shown in FIG. 8, in a single-stage burner structure of a dual furnace in which either poor gas or rich gas can be arbitrarily selected and used as fuel, a fuel poor gas port 22 and a combustion air port are provided at the bottom of each flue 21. 23 and a fuel-rich gas nozzle 24, and a single furnace that uses only a rich gas as fuel has a combustion air port 23 and a fuel-rich gas nozzle 24. In a coke oven having a multistage burner structure, in addition to a combustion air port at the bottom of the combustion chamber, a combustion air port is also provided in the middle stage of the partition wall.

  The furnace wall of the coke oven is subjected to severe conditions such as a sudden temperature change caused by charcoal or kiln removal, and wear and side pressure due to coke extrusion. For this reason, the bricks that make up the furnace wall during many years of use suffer damage such as joint breaks, cracks, and erosion, so it may be necessary to repair the bricks by transshipment. In particular, the furnace wall brick 25 close to the kiln is directly exposed to the atmosphere every time the kiln is started and undergoes a large temperature change, so that the degree of damage tends to be greater than that in the central part.

  In an aging coke oven, a repair method that partially replaces bricks without stopping the operation of the adjacent furnace chamber on the furnace wall near the damaged kiln entrance, so-called hot product Replacement repairs are being implemented.

  In the hot transshipment repair, while the combustion of the combustion chamber 20 other than the repair target part is continued, the supply of the fuel gas and the combustion air to the fulu 21 to be repaired is stopped to lower the temperature while the repair target is being repaired. A heat insulating partition is attached to the back side of the flue 21 to isolate it from the high heat on the back side of the carbonization chamber, and a heat insulating material is installed on the furnace wall adjacent to the flue 21 to be repaired to cut off the radiant heat from there. After securing the environment in which repair work can be performed by dismantling the bricks of the repair-target flue 21, brickwork is restored and restored.

FIG. 9 is a graph showing an example of a temperature increase expected curve when the newly refilled furnace wall brick is heated to a high temperature before returning to normal operation.
The newly loaded furnace wall brick must be heated to a high temperature (approximately over 1000 ° C.) before returning to normal operation. In the temperature increase, the temperature is gradually and uniformly increased while avoiding a rapid temperature change in accordance with a predetermined temperature increase schedule curve as shown in the graph of FIG. It is important to prevent cracks or furnace wall curvature.

  Up to now, as a method of raising the temperature of bricks after hot replacement, a burner is inserted into the carbonization chamber 10 with a heat insulating material attached to the furnace wall of the adjacent combustion chamber 20, or a burner is used. A method of heating by radiant heat from the adjacent combustion chamber 20 (Patent Document 1), a method of heating by introducing air heated in the adjacent carbonization chamber 10 into a thermally insulated space (Patent Document 2), and Has proposed a method (Patent Document 3) in which a heat-insulating partition wall provided on the back side of the carbonization chamber 10 is provided with a freely openable / closable air hole, and hot air is appropriately introduced from the back side of the carbonization chamber 10 to heat it.

Japanese Patent Publication No. 49-23564 JP-A 52-62303 Japanese Patent Publication No. 61-31749

  However, in the method disclosed in Patent Document 1, since a temperature difference in the vertical direction of the transshipment furnace wall tends to occur, frequent adjustment such as a burner is required for uniform temperature rise, and state monitoring and adjustment operations are complicated. It becomes. Further, in order to carry out the method disclosed in Patent Document 2, it is necessary to prepare an empty furnace chamber in addition to the repair furnace chamber in order to suck out hot air required for heating, avoiding a decrease in production volume. I can't.

The method disclosed in Patent Document 3 is one of the methods that have been adopted most frequently, and FIG. 10 shows an example of an embodiment of this temperature raising method.
As shown in FIG. 10, in this temperature raising method, the fuel poor gas port 22 and the combustion air port 23 of the reloaded flues 21a and 21b are all closed with a foil 27 such as aluminum, and are stored in the heat storage chamber. A vent hole provided in a heat insulating partition wall 11a attached to the back side of the carbonization chamber 10 in a state where the kiln opening is sealed with a temporary heat insulating lid 13 while preventing preheated air from flowing in and suddenly rising in temperature. Is opened to an appropriate degree of opening, and hot air 41 is introduced from the back side of the carbonization chamber 10 to be gradually heated.

  However, even with the temperature raising method disclosed in Patent Document 3, in order to uniformly raise the temperature of the transshipment furnace wall, the openings of the plurality of vent holes are adjusted frequently while confirming the temperature distribution of the transshipment furnace wall. Therefore, it is inevitable that state monitoring and adjustment operations become complicated.

  Moreover, since all the methods disclosed in Patent Documents 1 to 3 raise the temperature by applying heat to the transshipment furnace wall from the carbonization chamber 10 side, the temperature rise of the furnace wall bricks precedes the partition wall. Since the wall brick is heated by the conduction of heat from the furnace wall brick, the temperature rise of the partition wall brick is delayed as compared with the furnace wall brick, and there is a principle drawback that temperature unevenness occurs.

  Furthermore, when performing hot repair of a plurality of adjacent combustion chambers 20 continuously, it is inevitable that the temperature rise of the transshipment furnace wall will be hindered. That is, at the stage where the brick replacement is finished and the temperature is raised, without waiting for the temperature rise to end, when the hot repair of the adjacent combustion chamber 20 is subsequently started, the side where the hot repair is started The furnace wall is already in the state of brick dismantling or new brickwork, and the carbonization chamber 10 is closed with a heat insulating partition on the back side, so the hot air 41 from the back side of the carbonization chamber 10 also faces. Radiant heat from the combustion chamber furnace wall cannot be obtained, and the temperature of the transshipment furnace wall facing the combustion chamber 20 where repair is started cannot be increased.

  Therefore, in this state, heating can be performed only on one side of the transshipment furnace wall, and the other side of the transshipment furnace wall cannot be heated at all. In order to avoid this situation, it is necessary to wait until the temperature rise of the transshipment furnace wall is completed and start repairing the adjacent combustion chamber, which repairs multiple combustion chambers in succession. In this case, the overall construction process is greatly increased.

  Such a situation is not only in the case where repair is performed continuously one row at a time, but also in the case where repair is performed continuously in multiple rows, as in the case of single row construction, the rows at the end of the multiple rows Then, the problem that one furnace wall cannot be heated arises.

  The present invention eliminates the above-mentioned problems of the prior art, realizes an accurate and uniform temperature rise of the brick in the coking furnace, and continuously heats the adjacent combustion chambers. The purpose is to make it possible to raise the temperature during inter-transshipment repairs.

  As a result of various studies and researches to solve the above-mentioned problems, the inventors of the present invention opened a part of the lower part of the furnace wall brick of the flue 21 after hot transshipment and set the port of the flue 21 to 600. A part of the heat insulating partition 11a provided to shut off the heat behind the carbonization chamber 10 at the same time is closed by a foil-like material that melts and disappears at a temperature of ℃ or higher or a heat insulating material having heat resistance of 1000 ℃ or higher. By opening, the hot air inside the carbonizing chamber 10 that has flowed into the carbonizing chamber 10 is sucked and ventilated into the flue 21 from the hole provided in the furnace wall brick, and the flue is detected from the flue inspection hole directly above the flue 21. An exhaust duct is connected to the upper part of the flue inspection hole, and an orifice for freely adjusting the flow rate of air flowing through the flue 21 to the exhaust duct. By imparting quantity adjustment function, and we found that can accurately and uniformly transhipment furnace wall brick heating and have completed the present invention by overlapping a further study.

The present invention comprises a carbonization chamber for receiving and heat-distilling coal, a plurality of partition wall bricks arranged in the furnace length direction, and a plurality of flues defined by the furnace wall bricks facing the carbonization chamber, and burns fuel gas And a furnace type having a heat storage chamber arranged alternately with combustion chambers for giving heat for coal to dry distillation and being filled with heat storage bricks connected to the combustion chamber at the lower part of the combustion chamber After performing a brick transshipment of a part of the flue in the coke oven hot, until the temperature rise of the transposed brick is completed,
(A) An opening is provided in a part of the lower part of the furnace wall brick of the flue that has undergone brick replacement, and (b) the flue port that is an opening for supplying fuel gas or air of the flue is closed, (C) The hot air from the rear non-reloading portion that has flowed into the carbonization chamber adjacent to the flue is introduced into the flue through the opening, and the flue from the flue inspection hole immediately above the flue. This is a method of raising the temperature of a hot trans-transfer furnace wall of a coke oven, which is performed by exhausting hot air that has risen in the interior of the coke oven.

In the present invention, it is preferable to connect an exhaust duct to the upper part of the inspection hole directly above the flue that has undergone brick transshipment and adjust the flow rate of the hot air rising inside the flue.
In the present invention, it is preferable to close the opening for supplying fuel gas or air with a foil-like material that melts and disappears at a temperature of 600 ° C. or higher, or with a heat insulating material having heat resistance of 1000 ° C. or higher. .

  The present invention solves the problems of the prior art and raises the temperature of a furnace wall transposed by partial hot repair of a coke oven easily and uniformly without using many man-hours and special heating means. It is possible to prevent the occurrence of joint breaks and cracks in the bricks of the repair section.

  Further, according to the present invention, when repairing a plurality of consecutive combustion chambers, the temperature rise of the brick after transshipment and the next adjacent furnace wall dismantling or brickwork are performed in a time-overlapping manner. It is also possible to shorten the repair work process.

FIG. 1 is a cross-sectional view of a repaired part in the case where hot repair is performed from the bottom level of a carbonization chamber to the top of the furnace for two flues near the furnace port of one combustion chamber of the coke oven. FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 and shows a method of raising the temperature after the end of the hot transshipment of two flues at the end of one row of combustion chambers. FIG. 3 is a vertical cross-sectional view partially showing the vicinity of the full port in the example in which the full port is closed with a heat insulating material. FIG. 4 is a graph of an example of the thermal expansion characteristic curve of the quartz brick. FIG. 5 is a horizontal cross-sectional view showing a method of raising the temperature in the case where two flues at the end of the combustion chamber are continuously repaired one by one in a row. FIG. 6 is a horizontal cross-sectional view showing a method of raising the temperature when two flues at the end of the combustion chamber are continuously repaired in two rows. FIG. 7 is a longitudinal sectional view in the direction of the furnace group showing the furnace structure of the coke oven. FIG. 8 is a horizontal cross-sectional view showing a structure in the vicinity of the furnace port of the coke oven. FIG. 9 is a graph showing an example of a temperature increase expected curve when the newly refilled furnace wall brick is heated to a high temperature before returning to normal operation. FIG. 10 is an explanatory diagram showing an example of an embodiment of the temperature raising method disclosed in Patent Document 3. As shown in FIG.

  In the present invention, as has been conventionally performed, the temperature of the transshipment furnace wall brick is increased by introducing hot air from the inner side of the carbonization chamber or from the adjacent carbonization chamber that has been emptied, or from the adjacent combustion chamber. Rather than performing heat transfer from the carbonization chamber side of the transshipment furnace wall by receiving the radiant heat, the hot air that has flowed into the carbonization chamber by opening a part of the heat insulating partition on the back side of the carbonization chamber, The brick is heated by sucking it into the interior of the flue that is to be heated and venting the flue from the lower part to the upper part.

  In the present invention, a foil-like shape in which a part of the lower part of the furnace wall brick of the flue after brick replacement is opened and the flue port which is an opening for supplying fuel gas or air is melted and disappeared at a temperature of 600 ° C. or more. Or heat insulation material having heat resistance of 1000 ° C. or higher, and from the opening provided in the furnace wall brick, the hot air from the back side of the carbonization chamber that has flowed into the carbonization chamber from the open part of the heat insulation partition on the back side The inside of the flue is sucked and ventilated, the inspection hole at the top of the flue is opened, the exhaust duct is connected, and the amount of hot air flowing into the inside of the flue is appropriately adjusted.

  In addition, the opening provided in a part of the lower part of the furnace wall brick may be closed and restored with the furnace wall brick when the temperature rise is completed. At that time, if it is closed with a flue port insulation material, it must be removed and then the opening of the hole must be restored.If it is closed with a foil that melts and disappears, the foil will Since it melts and disappears naturally, it is preferable that this foil-like material does not need to be further removed before the opening is restored.

  At least one hole in the heat insulation furnace wall is provided for one flue, but it may be newly provided after the brickwork is completed, but it is desirable to provide it when the brickwork is constructed. It is general and preferable to open the brick by stacking bricks in a state where one to three steps of bricks corresponding to the portion to be opened in the lower part of the bricks to be formed are removed.

  The opening of the furnace wall is suitable for the purpose of introducing hot air into the flue, and at the same time, the opening of the furnace wall can be easily closed and the gas tightness of the furnace wall when returning to operation is achieved. What is necessary is just to be able to ensure, and it is not limited to a specific shape. For example, it may be not only a rectangle but also a circle, etc., may be horizontal in the depth direction of the opening, and may be further inclined or provided with a protrusion.

  In addition, the present invention is not limited to the hot repair of two flues forming a twin near the kiln entrance, and further performs hot repair including two flues forming a deeper twin or four flues or more. Even in the case of twin flues near the kiln entrance, all the flues that had undergone transshipment repair were closed with the fuluport closed and an opening was formed in the lower part of the furnace wall brick on one side of the flues. Similarly, it can be applied.

  The present invention is not limited to a single-stage burner structure having a fuel poor gas port and a combustion air port only at the bottom in a coke oven having a twin flue type combustion mode, but also a combustion air port in the middle stage of the combustion chamber. In the multi-stage burner structure having a single stage burner structure, not only the poor gas and the combustion air port at the bottom, but also the middle combustion air port at the same time is closed with a foil like the bottom port. It can be applied in exactly the same way.

  Furthermore, the present invention is also applicable to a combustion-type coke oven having a horizontal canal communicating with the upper part of the flue, so that the horizontal canal is shielded with a refractory material or the like so as to shut off the flue to be refilled and the flue not to be reloaded. By applying an object and preventing the inflow of combustion gas from a non-reloading flue, it can be applied in the same manner as in the case of a twin flue type combustion mode.

  Next, the present invention will be described more specifically with reference to examples.

  As an embodiment of the present invention, in the case where only two flues of a single stage burner structure forming a twin near the kiln opening of a single row combustion chamber in a double coke oven are independently repaired by hot transshipment, FIG. 2 and FIG.

  FIG. 1 shows a repaired part in the case where hot repair is performed from the level of the bottom of the carbonization chamber to the top of the two flues 21a and 21b near the furnace port of one combustion chamber 20a of the coke oven (in the figure, shaded with thick lines) (The same applies to the following drawings.) FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 3 is an explanatory view partially showing the vicinity of the flue ports 22 and 23 in the example in the case where the flue ports 22 and 23 are closed by the heat insulating material 29. .

  When closing the flue ports 22 and 23 with a foil-like material, as shown in FIG. 1 and FIG. 2, a part of the lower part of the furnace wall brick on either one of the left and right sides of the flues 21a and 21b after brick replacement is opened. The flue ports 22 and 23 are closed with a foil 27 having a melting temperature of 600 ° C. or higher.

FIG. 4 is a graph of an example of the thermal expansion characteristic curve of the quartz brick.
As shown in the thermal expansion characteristic curve of FIG. 4, the silica bricks constituting the furnace wall and the partition wall show a steep thermal expansion behavior in a temperature range of approximately 600 ° C. or lower, but the thermal expansion is higher in the higher temperature range. It is characterized by being slow and scarce. For this reason, it is effective that the temperature rise in the boundary region of 600 ° C. or less is slow and uniform while accurately controlling the inflow amount of hot air in order to suppress rapid brick expansion, while it exceeds 600 ° C. After reaching the high temperature range, the rate of temperature increase may be increased.

  Therefore, the foil 27 used to close the flue ports 22 and 23 does not melt up to at least about 600 ° C. and can reliably block the ventilation from the fuel poor gas port 22 and the combustion air port 23. At the same time, a foil-like material that melts at a temperature higher than that and finally melts and disappears at a temperature higher than 1000 ° C., which is a normal operating temperature of a coke oven, is suitable. By using such a foil-like material, as described above, there is an advantage that it is not necessary to remove it prior to the restoration of the closed opening of the furnace wall brick at the end of the temperature rise.

  From such a meaning, the foil 27 used for closing the fuel poor gas port 22 and the combustion air port 23 satisfies the temperature condition of having a melting temperature of 600 ° C. or higher, and has a gas barrier property. As long as the material satisfies the condition that the melt does not have the property of eroding bricks, either metal or non-metal can be used. However, the properties of foil-like aluminum having a melting temperature of 660 ° C. are required. In addition, it is one of the materials suitable for this application in terms of ease of processing and availability.

  In addition, since there is a concern that bricks may be eroded by the residue after melting if foil-containing aluminum contains a large amount of components other than aluminum, the content of components other than aluminum is less than 5% by mass in order to avoid this It is preferable that

  Further, the foil-like object 27 for closing the fuel poor gas port 22 and the combustion air port 23 is sandwiched and fixed between the port brick 28 and the brick below it when the brick is stacked. This is effective from the viewpoint of preventing peeling and scattering due to the aeration pressure in the middle.

  On the other hand, when a heat insulating material is used for closing the fuel poor gas port 22 and the combustion air port 23, as shown in FIG. 3, the lower part of the furnace wall brick on either one of the left and right sides of the flues 21a and 21b that have been brick-replaced And a port 22 for fuel poor gas and a port 23 for combustion air are closed with a heat insulating material having heat resistance of 1000 ° C. or higher.

  The heat insulating material used to close the fuel poor gas port 22 and the combustion air port 23 has heat resistance that does not melt up to approximately 1000 ° C., and is dense enough to block free permeation of gas. The material is not specified if it is a material having. As the form of the heat insulating material, it is necessary to match the shape of the heat insulating material to the fuel poor gas port 22 and the combustion air port 23 in order to ensure the airtightness of the closing of the fuel poor gas port 22 and the combustion air port 23. In consideration of the fact, a heat insulating board formed of calcium silicate or the like into a plate shape, or a ceramic fiber processed into a blanket shape is a suitable material for this application.

  An exhaust duct is provided above the flue inspection hole 30 in order to facilitate the introduction of hot air through a partial opening in the lower part of the furnace wall brick and facilitate ventilation of the hot air in the flues 21a and 21b. It is preferable to connect 31. Further, it is preferable that a flow rate adjusting mechanism such as an orifice 32 for freely adjusting the flow rate of hot air is appropriately attached to the exhaust duct 31.

  At this time, as shown in FIG. 2, the exhaust duct 31 may have a structure in which ducts connected to the inspection holes of the flues 21a and 21b are joined before being discharged to the atmosphere, or although not shown, the respective flues 21a and 21b. Each may be connected to a single duct and exhausted.

  In this state, when a part of the heat insulating partition wall 11 installed on the back side of the carbonization chamber 10a is opened and the hot air 41 on the back side of the carbonization chamber 11 flows into the carbonization chamber 10a, the hot air is supplied to the furnace wall brick 25. Are introduced into the flues 21a and 21b through the openings 35, and are raised from the bottom to the top by a draft. After the translucent brick constituting the flues 21a and 21b is heated from the inside, the upper inspection holes 30.

  The heating by letting hot air 41 flow from the bottom to the top of the flue 21a, 21b is more in the vertical direction than the method of introducing hot air to the carbonization chamber 10a side or the method of heating by radiant heat from the facing furnace wall. It is advantageous to maintain the uniformity of the.

  Furthermore, the heating by ventilating the hot air 41 inside the flues 21a and 21b can simultaneously heat the furnace wall brick 25 and the partition wall brick 26, so that the temperature rise inside and outside the flues 21a and 21b is not uniform. It has an advantage over conventional methods in that it can be suppressed.

  Further, by changing the diameter of the flow rate adjusting orifice 32 provided in the exhaust duct 31 connected to the flue inspection hole 30, the inside of the flue 21a, 21b measured by the thermocouple placed in the flue 21a, 21b. The flow rate of the hot air 41 can be freely adjusted according to the temperature to control the temperature, and it is easy to raise the internal temperatures of the flues 21a and 21b along a preset temperature pattern. This is because the orifice 32 can be replaced without repeating the cumbersome work of changing and adjusting the opening area of the partially opened portions of the heat insulating partition walls 11a and 11b attached to the back side of the carbonization chamber as in the conventional method. This means that the flow rate of the hot air 41 can be controlled simply and simply, and this is effective not only in reducing the labor of work but also in improving the accuracy of temperature control.

The method of adjusting the flow rate of the hot air 41 is not limited to the orifice 32, and for example, a necessary function can be satisfied by attaching a flow rate variable valve such as a butterfly valve.
In addition, when the temperature is raised, the heat insulating partition wall 11 attached to the back side of the carbonization chamber 10b is not opened at all, and the inflow of hot air 41 from the back side of the carbonization chamber 10b is shielded while keeping the heat insulation state. The refilled furnace wall brick 25 covers the entire surface with a blanket-like ceramic fiber or board-like heat insulating material 12 to prevent heat dissipation from the furnace wall brick surface, and receives radiant heat from the facing furnace wall. It is preferable to prevent.

  The foil 27 that has closed the flue ports 21a and 21b at the stage where the temperature rise is finished is automatically melted and disappears, so that it is not necessary to remove it intentionally and the furnace wall brick 25 The opening 35 provided in a part of the exhaust pipe 31 is closed with a furnace wall brick, the exhaust duct 31 connected to the flue inspection hole 30 is removed, the lid of the flue inspection hole 30 is closed, and normal combustion is performed. What is necessary is just to return to the alternate gas flow by switching.

  Further, in the case where the flue port is closed with the heat insulating material 29, the heat insulating material 29 is provided to a part of the furnace wall brick 25 at the stage where the temperature rise is finished, and the heat insulating material 29 is taken out from the opening 35, and then opened. The hole 35 may be restored by closing the furnace wall brick, the exhaust duct 31 connected to the flue inspection hole 30 may be removed, the lid of the flue inspection hole 30 may be closed, and the normal gas flow may be restored.

Next, the case where the hot repair of two flues near the kiln entrance of the combustion chamber is successively applied to the adjacent combustion chamber one row at a time will be described with reference to FIG.
FIG. 5 is a horizontal sectional view showing a method of raising the temperature when two flues 21a and 21b at the end of the combustion chamber are successively repaired one by one.

  In the case of continuous construction, when the replacement of the flues 21a and 21b of the combustion chamber 20a is completed and the temperature rise is started, the combustion chamber 20b that is the next repair target has already been demolished or new brickwork. Therefore, in the conventional method such as introducing hot air from the back side of the carbonization chamber as shown in FIG. 10, not only the introduction of hot air from the carbonization chamber 10b but also the furnace wall of the facing combustion chamber. The radiant heat cannot be received, and the furnace wall brick 25 cannot be heated from the right side of the transposed combustion chamber.

  Therefore, a large imbalance between the right and left temperature rises of the combustion chamber 20a is unavoidable, and if the temperature rises only from one side in that state, the furnace wall deformation and brick cracks that occur due to uneven temperature rise Since there is a strong concern that it will cause a situation such as disconnection, it is virtually impossible to raise the temperature.

  However, in the same manner as in the first embodiment, by applying the present invention, as shown in FIG. 5, even when the adjacent combustion chamber 20b is already in the state of brick dismantling or new brick building, the combustion chamber in which the transshipment is completed is completed. It becomes possible to independently and uniformly heat the transshipment furnace walls of the flues 21a and 21b of 20a.

An embodiment of the present invention will be described with reference to FIG. 6 in the case where two hot repairs near the kiln entrances of two rows of combustion chambers are successively applied to adjacent combustion chambers in two rows.
FIG. 6 is a horizontal cross-sectional view showing a method of raising the temperature when two flues 21a and 21b at the end of the combustion chamber are successively repaired in two rows.

  When two rows are constructed continuously, when the transshipment of the respective flues 21a and 21b of the combustion chambers 20a and 20b is completed and the temperature rise is started, the combustion chambers 20c and 20d to be repaired are already old. Since brick dismantling or new brick building work has started, the combustion chamber 20a can be heated by a conventional method of introducing hot air from the back of the carbonization chamber, but the combustion chamber 20b is an embodiment. 2, neither the introduction of hot air from the back side of the carbonization chamber nor the reception of radiant heat from the facing combustion chamber furnace wall by the conventional method can be performed, and the temperature rise from the right side of the transposed combustion chamber 20 b I can't.

  As shown in FIG. 6, by applying the temperature raising method of the present invention to the flues 21a and 21b of the combustion chamber 20b, transshipment can be performed even if the adjacent combustion chamber 20c is in the state of brick dismantling or new brick building. It is possible to independently raise the temperature of the transshipment furnace walls of the fulu 21a and 21b of the finished combustion chamber 20b.

  Although FIG. 6 shows an example in which the method of the present invention is applied only to the combustion chamber 20b among the two rows of combustion chambers subjected to transshipment, the method of the present invention is applied to both the combustion chambers 20a and 20b. Is also possible.

  It should be noted that not only single-row or double-row repairs but also hot repairs of three or more rows of combustion chambers are successively applied to the adjacent combustion chambers in succession. As in the case, the method of the invention can be applied.

10, 10a to 10d Carbonization chamber 11 Heat insulation partition 11a Heat insulation partition (partially open state)
12 Heat Insulating Material 13 Furnace Insulation Lid 20, 20a-20d Combustion Chamber 21, 21a, 21b Flue 22 Fuel Poor Gas Port 23 Combustion Air Port 25 Furnace Wall Brick 26 Partition Wall Brick 27 Foil 28 Port Brid 29 Heat Insulation Material 30 Flue inspection hole 31 Exhaust duct 32 Adjustment orifice 35 Opening hole 40 provided in furnace wall brick Thermal storage chamber 41 Hot air

Claims (4)

A carbonization chamber for receiving and heat-distilling coal, a plurality of partition wall bricks arranged in the furnace length direction, and a plurality of flues partitioned by the furnace wall bricks facing the carbonization chamber, and burning fuel gas to Combustion chamber type coke provided with heat storage chambers arranged alternately with combustion chambers that give heat for coal to dry distillation and filled with heat storage bricks connected to the combustion chambers at the bottom of the combustion chambers After performing brick transshipment of a part of the flue in the furnace hot, until the temperature rise of the transposed brick is completed,
An opening is provided in a part of the lower part of the furnace wall brick of the flue that has undergone brick transshipment, and the flue port that is an opening for supplying fuel gas or air of the flue is closed and adjacent to the flue. Hot air that has flowed into the carbonization chamber from the non-reloading portion on the back side is introduced into the flue from the opening, and hot air that has risen inside the flue from the flue inspection hole that is directly above the flue. A method for raising the temperature of a hot trans-transfer furnace wall of a coke oven, characterized by being performed by exhausting.   2. The coke oven according to claim 1, wherein an exhaust duct is connected to an upper part of an inspection hole immediately above the flue that has undergone brick transshipment, and a flow rate of hot air rising inside the flue is adjusted. Method for raising the temperature of the hot transshipment furnace wall.   The hot-reloading furnace wall of a coke oven according to claim 1 or 2, wherein the opening for supplying fuel gas or air is closed with a foil-like material that melts and disappears at a temperature of 600 ° C or higher. Temperature rising method.   The opening for supplying a fuel gas or air is closed with a heat insulating material having a heat resistance of 1000 ° C. or higher. Warm method.

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