Coke oven door and coking method

Abstract

An embodiment of the present invention provides a coke oven door and a coking method, wherein the oven door may include: a oven door body and a oven door lining, wherein the oven door lining is connected to one side of the oven door body close to a carbonization chamber, wherein: the oven door lining has a cooling medium space for accommodating a cooling medium inside, and is used to accommodate the injected cooling medium during the coking process; by adopting the technical solution provided by the embodiment of the present invention, the dissipated heat will pass through the cooling medium space of the oven door lining and enter the outside of the carbonization chamber, and since the thermal conductivity of the cooling medium is very low, it is beneficial to suppress heat conduction during the coking process, thereby reducing the heat loss during the coking process.

Description

Technical Field

[0001] The invention relates to the technical field of coking production, in particular to a coke oven door and a coking method. Background Art

[0002] The coking industry is a basic industry with high pollution, high emissions and high energy consumption, which can provide important raw materials (coke) for the steel industry. The main pollutants in the coking industry include waste gas, wastewater and dust.

[0003] As the domestic steel industry's production capacity approaches saturation and environmental protection becomes increasingly stringent, energy conservation, emission reduction and clean production in the coking industry are imperative. In the prior art, the coke oven door is generally placed on both sides of the carbonization chamber, which can play a role in sealing and heat insulation during the coking production process. The coke oven door consists of a door body and a door lining, wherein the door body can include a sealing knife edge and a web, and a door frame is arranged around the furnace mouth of the carbonization chamber. When the coke oven door is closed, the sealing knife edge is rigidly pressed against the sealing surface of the door frame; during the production process, during the carbonization chamber dry distillation process, part of the high-temperature raw coal gas and smoke can pass through the gap between the door lining and the furnace wall and gather in the closed space formed by the sealing knife edge, the web, and the brick groove.

[0004] However, since the coking process is a high-temperature distillation process, the carbonization chamber is in a high-temperature state. The heat in the carbonization chamber passes through the furnace door lining and the furnace door body, and is dissipated to the environment by convection and radiation from the outer surface of the furnace door body, resulting in a large amount of heat loss in the coking process. Summary of the invention

[0005] The purpose of the embodiment of the present invention is to provide a coke oven door and a coking method to reduce the heat loss during the coking process. The specific technical solution is as follows:

[0006] An embodiment of the present invention provides a coke oven door, comprising: a door body and a door lining, wherein the door lining is connected to one side of the door body close to a carbonization chamber of a recovery coke oven, wherein:

[0007] The furnace door lining has a cooling medium space for accommodating a cooling medium inside, and is used to accommodate the injected cooling medium during the coking process.

[0008] Furthermore, the furnace door lining has a cooling medium channel inside, and the cooling medium space includes the space inside the cooling medium channel;

[0009] The cooling medium channel has a cooling medium inlet, so that the cooling medium is injected into the cooling medium channel from the cooling medium inlet.

[0010] Furthermore, the furnace door lining also has two raw gas channels and a first nozzle inside, and the cooling medium space also includes the space inside the two raw gas channels;

[0011] The raw gas channel is located in the space between the cooling medium channel and the furnace door body, the raw gas channel has a first channel opening, a second channel opening and a third channel opening, the first channel opening of the raw gas channel is connected to the raw gas collection space, the raw gas collection space is a space composed of the furnace door body, the furnace door lining and the furnace door frame of the carbonization chamber, the third channel opening of the raw gas channel is connected to the cooling medium channel, the first nozzle is arranged in the third channel opening, and the second channel opening of the raw gas collection space is connected to a preset collection area;

[0012] The first nozzle sprays the cooling medium in the cooling medium channel into the raw gas channel so that the cooling medium flows in the raw gas channel in a preset direction. The cooling medium flowing in the raw gas channel in the preset direction attracts the raw gas in the raw gas collection space into the raw gas channel and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel flow to the preset area of ​​the raw gas channel in the preset direction, they enter the preset collection area through the second channel opening.

[0013] Furthermore, the furnace door lining also has two raw gas channels, a second nozzle and a delivery channel, and the cooling medium space also includes the space in the two raw gas channels and the space in the delivery channel;

[0014] The raw gas channel and the delivery channel are located in the space between the cooling medium channel and the furnace door body, the delivery channel is communicated with the cooling medium inlet, so that the cooling medium in the cooling medium inlet enters the delivery channel, the raw gas channel has a first channel opening, a second channel opening and a fourth channel opening, the first channel opening of the raw gas channel is communicated with a raw gas collection space, the raw gas collection space is a space composed of the furnace door body, the furnace door lining and the furnace door frame of the carbonization chamber, the fourth channel opening of the raw gas channel is communicated with the delivery channel, the second nozzle is arranged in the fourth channel opening, and the second channel opening of the raw gas channel is communicated with a preset collection area;

[0015] The second nozzle sprays the cooling medium in the conveying channel into the raw gas channel so that the cooling medium flows in the raw gas channel in a preset direction. The cooling medium flowing in the raw gas channel in the preset direction attracts the raw gas in the raw gas collection space into the raw gas channel and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel flow to the preset area of ​​the raw gas channel in the preset direction, they enter the preset collection area through the second channel opening.

[0016] Furthermore, it also includes: a brick groove and two brick groove side panels, the brick groove is fixed on one side of the furnace door body close to the carbonization chamber of the recovery coke oven, the furnace door lining is inlaid and fixed on the side of the brick groove away from the furnace door body, one end of the two brick groove side panels are fixed to the brick groove, and the other end is inlaid and fixed on the opposite sides of the furnace door lining.

[0017] Furthermore, the furnace door lining further comprises a first nozzle, and the furnace door lining is located in a space between the cooling medium channel and the brick groove, and both sides of the two brick groove side plates corresponding to the two brick grooves are provided with strip grooves, each of the strip grooves, the brick groove and the corresponding brick groove side plates form a raw gas channel, and the cooling medium space also comprises the space in the two raw gas channels;

[0018] The raw gas channel has a first channel opening, a second channel opening and a third channel opening. The first channel opening of the raw gas channel passes through the brick groove side plate and is connected to the raw gas collection space. The raw gas collection space is a space composed of the furnace door body, the brick groove side plate and the furnace door frame of the carbonization chamber. The third channel opening of the raw gas channel is connected to the cooling medium channel. The first nozzle is arranged in the third channel opening. The second channel opening of the raw gas channel is connected to a preset collection area.

[0019] The first nozzle sprays the cooling medium in the cooling medium channel into the raw gas channel so that the cooling medium flows in the raw gas channel in a preset direction. The cooling medium flowing in the raw gas channel in the preset direction attracts the raw gas in the raw gas collection space into the raw gas channel and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel flow to the preset area of ​​the raw gas channel in the preset direction, they enter the preset collection area through the second channel opening.

[0020] Further, the furnace door lining has a second nozzle and a conveying channel inside, and the furnace door lining is located in the space between the cooling medium channel and the brick groove, and both sides of the two brick groove side plates corresponding to the two brick grooves are provided with strip grooves, the strip grooves, the brick grooves and the corresponding brick groove side plates constitute a raw gas channel, and the cooling medium space also includes the space in the two raw gas channels and the space in the conveying channel;

[0021] The delivery channel is communicated with the cooling medium inlet so that the cooling medium in the cooling medium inlet enters the delivery channel. The raw gas channel has a first channel opening, a second channel opening and a fourth channel opening. The first channel opening of the raw gas channel passes through the brick groove side plate and is communicated with the raw gas collection space. The raw gas collection space is a space composed of the furnace door body, the brick groove side plate and the furnace door frame of the carbonization chamber. The fourth channel opening of the raw gas channel is communicated with the delivery channel. The second nozzle is arranged in the fourth channel opening. The second channel opening of the raw gas channel is communicated with a preset collection area.

[0022] The second nozzle sprays the cooling medium in the conveying channel into the raw gas channel so that the cooling medium flows in the raw gas channel in a preset direction. The cooling medium flowing in the raw gas channel in the preset direction attracts the raw gas in the raw gas collection space into the raw gas channel and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel flow to the preset area of ​​the raw gas channel in the preset direction, they enter the preset collection area through the second channel opening.

[0023] Furthermore, the cooling medium includes at least one of flue gas, blast furnace gas, coke oven gas, hydrogen, water vapor and air.

[0024] Furthermore, it also includes a heat exchange pipeline, which is located in the cooling medium channel, and the heat exchange pipeline contains at least one of coke oven gas, blast furnace gas and air.

[0025] Furthermore, the furnace door lining has two raw gas channels, a second nozzle and a conveying channel inside, and the cooling medium space includes the space inside the two raw gas channels and the space inside the conveying channel;

[0026] The delivery channel has a delivery channel inlet, so that the cooling medium is injected into the delivery channel from the delivery channel inlet, the raw gas channel has a first channel opening, a second channel opening and a fourth channel opening, the first channel opening of the raw gas channel is connected to a raw gas collection space, the raw gas collection space is a space composed of the furnace door body, the furnace door lining and the furnace door frame of the carbonization chamber, the fourth channel opening of the raw gas channel is connected to the delivery channel, the second nozzle is arranged in the fourth channel opening, and the second channel opening of the raw gas channel is connected to a preset collection area;

[0027] The second nozzle sprays the cooling medium in the conveying channel into the raw gas channel so that the cooling medium flows in the raw gas channel in a preset direction. The cooling medium flowing in the raw gas channel in the preset direction attracts the raw gas in the raw gas collection space into the raw gas channel and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel flow to the preset area of ​​the raw gas channel in the preset direction, they enter the preset collection area through the second channel opening.

[0028] Further, it also includes: a brick groove and two brick groove side plates, the brick groove is fixed on the side of the furnace door body close to the carbonization chamber, the furnace door lining is inlaid and fixed on the side of the brick groove away from the furnace door body, one end of the two brick groove side plates are fixed to the brick groove, and the other end is inlaid and fixed on the opposite sides of the furnace door lining;

[0029] The furnace door lining has a second nozzle and a conveying channel inside, and the furnace door lining has strip grooves on both sides corresponding to the two brick groove side plates, the strip grooves, the brick grooves and the corresponding brick groove side plates form a raw gas channel, and the cooling medium space includes the space in the two raw gas channels and the space in the conveying channel;

[0030] The delivery channel has a delivery channel inlet, so that the cooling medium is injected into the delivery channel from the delivery channel inlet, the raw gas channel has a first channel opening, a second channel opening and a fourth channel opening, the first channel opening of the raw gas channel passes through the brick groove side plate and is connected with the raw gas collection space, the raw gas collection space is a space composed of the furnace door body, the brick groove side plate and the furnace door frame of the carbonization chamber, the fourth channel opening of the raw gas channel is connected with the delivery channel, the second nozzle is arranged in the fourth channel opening, and the second channel opening of the raw gas channel is connected with a preset collection area;

[0031] The second nozzle sprays the cooling medium in the conveying channel into the raw gas channel so that the cooling medium flows in the raw gas channel in a preset direction. The cooling medium flowing in the raw gas channel in the preset direction attracts the raw gas in the raw gas collection space into the raw gas channel and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel flow to the preset area of ​​the raw gas channel in the preset direction, they enter the preset collection area through the second channel opening.

[0032] The embodiment of the present invention further provides a coking method based on any of the above-mentioned coke oven doors, comprising:

[0033] After coking is started, the cooling medium is injected into the cooling medium space.

[0034] Furthermore, the method further comprises:

[0035] At the end of coking, air is injected into the cooling medium space as the cooling medium until the tar and graphite deposited in the cooling medium space are burned.

[0036] Furthermore, the method further comprises:

[0037] At the end of coking, flue gas is injected into the cooling medium space as the cooling medium until the combustible gas in the cooling medium space is exhausted.

[0038] Beneficial effects of the embodiments of the present invention:

[0039] The coke oven door and coking method provided by the embodiment of the present invention may include: a furnace door body and a furnace door lining, the furnace door lining being connected to one side of the furnace door body close to the carbonization chamber, wherein: the furnace door lining has a cooling medium space for accommodating a cooling medium inside, which is used to accommodate the injected cooling medium during the coking process; by adopting the technical scheme provided by the embodiment of the present invention, the dissipated heat will pass through the cooling medium space of the furnace door lining and enter the outside of the carbonization chamber. Since the thermal conductivity of the cooling medium is very low, it is beneficial to suppress heat conduction during the coking process, thereby reducing the heat loss during the coking process.

[0040] Of course, it is not necessary to achieve all of the advantages described above at the same time to implement any product or method of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A schematic diagram of a coke oven door provided by an embodiment of the present invention Figure 1 ;

[0043] Figure 2 A schematic diagram of a coke oven door provided by an embodiment of the present invention Figure 2 ;

[0044] Figure 3 A schematic diagram of a coke oven door provided by an embodiment of the present invention Figure 3 ;

[0045] Figure 4 A schematic diagram of a coke oven door provided by an embodiment of the present invention Figure 4 ;

[0046] Figure 5 A schematic diagram of a coke oven door provided by an embodiment of the present invention Figure 5 ;

[0047] Figure 6 A schematic diagram of a coke oven door provided by an embodiment of the present invention Figure 6 ;

[0048] Figure 7 A schematic diagram of a coke oven door provided by an embodiment of the present invention Figure 7 ;

[0049] Figure 8 A flow chart of a coking method provided by an embodiment of the present invention;

[0050] Fig. 9 A flow chart of another coking method provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] The embodiment of the present invention provides a coke oven door, such as Figure 1As shown, it may specifically include: a furnace door body 1 and a furnace door lining 2, wherein the furnace door lining 2 is connected to one side of the furnace door body 1 close to the carbonization chamber of the recovery coke oven, wherein:

[0053] The furnace door lining 2 has a cooling medium space therein for accommodating a cooling medium, and is used to accommodate the injected cooling medium during the coking process.

[0054] By adopting the technical solution provided in the embodiment of the present invention, the dissipated heat will enter the outside of the carbonization chamber through the cooling medium space of the furnace door lining 2. Since the thermal conductivity of the cooling medium is very low, it is beneficial to suppress heat conduction in the coking process, thereby reducing the heat loss in the coking process. In addition, since the cooling medium channel 201 is a hollow structure, the overall weight of the coke oven door is reduced, thereby reducing the workload of the door removing mechanism, which is beneficial to increasing the service life of the door removing mechanism.

[0055] Among them, the material of the furnace door lining 2 can be a refractory material with excellent thermal shock stability, such as shaped refractory materials and refractory castables, etc. Specifically, the furnace door lining 2 can be a fused quartz brick or abalone brick or cordierite brick with excellent thermal shock stability; the cooling medium can be a gaseous medium with low thermal conductivity, for example, the cooling medium can include at least one of flue gas, blast furnace gas, coke oven gas, hydrogen, water vapor and air; specifically, a heat insulating material 208 can be arranged between the furnace door lining 2 and the furnace door body 1.

[0056] Furthermore, the furnace door lining 2 has a cooling medium channel 201 inside, and the cooling medium space includes the space inside the cooling medium channel 201;

[0057] The cooling medium channel 201 has a cooling medium inlet 202 , so that the cooling medium is injected into the cooling medium channel 201 from the cooling medium inlet 202 .

[0058] Specifically, the coke oven door is a vertical structure, installed at the furnace mouth of the carbonization chamber of the recovery coke oven, so as to seal the furnace mouth of the carbonization chamber when coking is started; the cooling medium inlet 202 can be located at the bottom end of the cooling medium channel 201, and the pipeline for conveying the cooling medium can be laid along the coke oven machine and the operating table of the recovery coke oven. A cooling medium vertical connecting pipe can be provided at the coke oven door, and the cooling medium vertical connecting pipe can supply the cooling medium to the cooling medium inlet through a valve and a regulating device, so that the cooling medium is injected into the cooling medium channel 201 from the cooling medium inlet 202.

[0059] In one embodiment, if Figure 3 and Figure 5 As shown, the furnace door lining 2 also has two raw gas channels 203 and a first nozzle inside, and the cooling medium space also includes the space inside the two raw gas channels 203;

[0060] The raw gas channel 203 is located in the space between the cooling medium channel 201 and the furnace door body 1. The raw gas channel 203 has a first channel opening 204, a second channel opening 205 and a third channel opening 206. The first channel opening 204 of the raw gas channel 203 is connected to the raw gas collection space 6, and the third channel opening 206 of the raw gas channel 203 is connected to the cooling medium channel 201. The first nozzle is arranged in the third channel opening 206, and the second channel opening 205 of the raw gas collection space 6 is connected to the preset collection area.

[0061] The first nozzle sprays the cooling medium in the cooling medium channel 201 into the raw gas channel 203, so that the cooling medium flows in the raw gas channel 203 in a preset direction. The cooling medium flowing in the raw gas channel 203 in the preset direction attracts the raw gas in the raw gas collection space 6 into the raw gas channel 203 and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel 203 flow to the preset area of ​​the raw gas channel 203 in the preset direction, they enter the preset collection area through the second channel opening 205; therefore, the cooling medium is increased. The volume of the space is conducive to suppressing heat conduction during the coking process and further reducing the heat loss during the coking process; at the same time, the raw gas in the raw gas collection space 6 can be discharged to the preset collection area, which can reduce the occurrence of intermittent smoke and dust leakage caused by factors such as the loose seal between the furnace door body 1 and the furnace door frame 5 of the carbonization chamber and the pressure fluctuation in the carbonization chamber; in addition, since the raw gas channel 203 is a hollow structure, the overall weight of the coke oven door is further reduced, thereby reducing the workload of the door removing mechanism, which is conducive to improving the service life of the door removing mechanism.

[0062] Among them, the raw gas collection space 6 is a space composed of a furnace door body 1, a furnace door lining 2 and a furnace door frame 5 of the carbonization chamber. The furnace door frame 5 is a rectangular frame. The furnace door body 1 may include a sealing knife edge 101 and a web 102. The sealing knife edge 101 is also a rectangular frame, which is connected to the web 102 on one side of the carbonization chamber close to the recovery coke oven. The sealing knife edge 101 can be pressed tightly on the furnace door frame 5 of the carbonization chamber. The furnace door lining 2 can be connected to the web 102 on one side of the carbonization chamber close to the recovery coke oven. The furnace door lining 2 is located at the center of the sealing web 102 and is surrounded by four sides of the sealing knife edge 101.

[0063] Specifically, the preset direction may be a vertically upward direction, the coke oven door is a vertical structure, the preset area of ​​the raw gas channel 203 may be the top of the raw gas channel 203, the cooling medium inlet 202 may be located at the bottom of the cooling medium channel 201, and the direction from one end connected to the cooling medium channel 201 by the third channel opening 206 to the other end is inclined upward, and the first nozzle may spray the cooling medium in the cooling medium channel 201 into the raw gas channel 203, so that the cooling medium entering the raw gas channel 203 has an initial velocity consistent with the inclined direction of the third channel opening 206, which is conducive to entering the raw gas channel 2 The cooling medium in the raw gas channel 203 flows in a vertically upward direction. At the same time, since the cooling medium in the raw gas channel 203 flows in a vertically upward direction, the pressure in the raw gas channel 203 is lower than the pressure in the raw gas collecting space 6. The raw gas in the raw gas collecting space 6 enters the raw gas channel 203 through the first channel opening 204, and flows in a vertically upward direction together with the cooling medium in the raw gas channel 203 until it flows to the top of the raw gas channel 203 and enters the preset collection area through the second channel opening 205; wherein: the preset collection area can be the area above the top of the carbonization chamber of the recovery coke oven.

[0064] Specifically, the direction from one end of the first channel opening 204 connected to the raw gas collecting space 6 to the other end is inclined upward, which is conducive to the raw gas in the raw gas collecting space 6 entering the raw gas channel 203 and flowing in the vertical upward direction.

[0065] Specifically, the material of the first nozzle may be a refractory material with an adjustable opening and that is replaceable, or the first nozzle may be a metal component with an adjustable opening and that is replaceable.

[0066] In another embodiment, if Figure 2 and Figure 4 As shown, the furnace door lining 2 also has two raw gas channels 203, a second nozzle and a delivery channel 207, and the cooling medium space also includes the space in the two raw gas channels 203 and the space in the delivery channel 207;

[0067] The raw gas channel 203 and the conveying channel 207 are located in the space between the cooling medium channel 201 and the furnace door body 1. The conveying channel 207 is connected with the cooling medium inlet 202 so that the cooling medium in the cooling medium inlet 202 enters the conveying channel 207. The raw gas channel 203 has a first channel opening 204, a second channel opening 205 and a fourth channel opening 209. The first channel opening 204 of the raw gas channel 203 is connected with the raw gas collection space 6. The raw gas collection space 6 is a space composed of the furnace door body 1, the furnace door lining 2 and the furnace door frame 5 of the carbonization chamber. The fourth channel opening 209 of the raw gas channel 203 is connected with the conveying channel 207. The second nozzle is arranged in the fourth channel opening 209. The second channel opening 205 of the raw gas channel 203 is connected with the preset collection area; wherein, the volume of the cooling medium space is further increased, which is beneficial to suppress heat conduction during the coking process and further reduce the heat loss during the coking process.

[0068] The second nozzle sprays the cooling medium in the conveying channel 207 into the raw gas channel 203, so that the cooling medium flows in the raw gas channel 203 according to a preset direction. The cooling medium flowing in the raw gas channel 203 according to the preset direction attracts the raw gas in the raw gas collection space 6 into the raw gas channel 203 and flows according to the preset direction. When the raw gas and the cooling medium in the raw gas channel 203 flow to the preset area of ​​the raw gas channel 203 according to the preset direction, they enter the preset collection area through the second channel opening 205. Among them, since the conveying channel 207 is a hollow structure, the overall weight of the coke oven door is further reduced, the workload of the door removing mechanism is reduced, and the service life of the door removing mechanism is improved.

[0069] Specifically, the preset direction may be a vertically upward direction, the coke oven door is a vertical structure, the preset area of ​​the raw gas channel 203 may be the top of the raw gas channel 203, the cooling medium inlet 202 may be located at the bottom of the cooling medium channel 201, and the direction from one end connected to the delivery channel 207 by the fourth channel opening 209 to the other end is inclined upward, and the second nozzle may spray the cooling medium in the delivery channel 207 into the raw gas channel 203, so that the cooling medium entering the raw gas channel 203 has an initial velocity consistent with the inclined direction of the third channel opening 206, which is conducive to entering the raw gas channel 203. The cooling medium in the raw gas channel 203 flows in the vertical upward direction. At the same time, since the cooling medium in the raw gas channel 203 flows in the vertical upward direction, the pressure in the raw gas channel 203 is lower than the pressure in the raw gas collecting space 6. The raw gas in the raw gas collecting space 6 enters the raw gas channel 203 through the first channel opening 204, and flows in the vertical upward direction together with the cooling medium in the raw gas channel 203 until it flows to the top of the raw gas channel 203 and enters the preset collection area through the second channel opening 205; wherein: the preset collection area can be the area above the top of the carbonization chamber of the recovery coke oven.

[0070] Specifically, the material of the second nozzle may be a refractory material with an adjustable opening and that is replaceable, or the second nozzle may be a metal component with an adjustable opening and that is replaceable.

[0071] In a possible embodiment, the interior of the furnace door lining 2 may further have two raw gas channels 203, a second nozzle and a delivery channel 207, and the raw gas channel 203 may have a first channel opening 204, a second channel opening 205, a third channel opening 206 and a fourth channel opening 209, wherein the specific connection relationship may refer to the above description, and the embodiment of the present invention will not be described in detail herein; in this embodiment, the cooling medium and the raw gas in the raw gas channel 203 can be recovered to a preset collection area through the convection and radiation heat exchange principle of the cooling medium, and the heat on the surface of the furnace door can be recovered to reduce the surface temperature of the furnace door, wherein the surface temperature of the furnace door can be controlled between 25°C and 60°C.

[0072] Furthermore, it can also include: a brick groove 3 and two brick groove side panels 4, the brick groove 3 is fixed on one side of the furnace door body 1 close to the carbonization chamber of the recovery coke oven, the furnace door lining 2 is inlaid and fixed on the side of the brick groove 3 away from the furnace door body 1, one end of the two brick groove side panels 4 are fixed to the brick groove 3, and the other end is inlaid and fixed on the opposite sides of the furnace door lining 2.

[0073] Specifically, the furnace door body 1 may include a sealing edge 101 and a web 102. The sealing edge 101 may also be a rectangular frame connected to the side of the web 102 close to the carbonization chamber of the recovery coke oven. The brick groove 3 may be connected to the side of the web 102 close to the carbonization chamber of the recovery coke oven.

[0074] In one embodiment, if Figure 5 and Figure 7 As shown, the furnace door lining 2 also has a first nozzle inside, and the furnace door lining 2 is located in the space between the cooling medium channel 201 and the brick groove 3, and the two sides of the corresponding two brick groove side plates 4 are provided with strip grooves, each strip groove, the brick groove 3 and the corresponding brick groove side plate 4 form a raw gas channel 203, and the above-mentioned cooling medium space also includes the space in the two raw gas channels 203;

[0075] The raw gas channel 203 has a first channel opening 204, a second channel opening 205 and a third channel opening 206. The first channel opening 204 of the raw gas channel 203 penetrates the brick trough side plate 4 and is connected to the raw gas collection space 6. The raw gas collection space 6 is a space composed of the furnace door body 1, the brick trough side plate 4 and the furnace door frame 5 of the carbonization chamber. The third channel opening 206 of the raw gas channel 203 is connected to the cooling medium channel 201. The first nozzle is arranged in the third channel opening 206. The second channel opening 205 of the raw gas channel 203 is connected to the preset collection area.

[0076] The first nozzle sprays the cooling medium in the cooling medium channel 201 into the raw gas channel 203, so that the cooling medium flows in the raw gas channel 203 in a preset direction. The cooling medium flowing in the raw gas channel 203 in the preset direction attracts the raw gas in the raw gas collection space 6 to enter the raw gas channel 203 and flow in the preset direction. When the raw gas and the cooling medium in the raw gas channel 203 flow to the preset area of ​​the raw gas channel 203 in the preset direction, they enter the preset collection area through the second channel opening 205. Since the raw gas channel 203 is a hollow structure, the volume of the cooling medium space is increased, which is beneficial to suppress heat conduction during the coking process and further reduce the heat loss during the coking process. At the same time, the raw gas in the raw gas collection space 6 can also be discharged to the preset collection area, which can reduce the occurrence of intermittent smoke and dust leakage caused by factors such as loose sealing between the furnace door body 1 and the furnace door frame 5 of the carbonization chamber and pressure fluctuations in the carbonization chamber.

[0077] Specifically, the material of the brick trough 3 and the brick trough side plate 4 can be metal material, and the brick trough 3 and the brick trough side plate 4 can be fixed by a detachable connection method. During maintenance, it is convenient to remove the brick trough side plate, clean the tar and graphite deposited in the raw gas channel 203, the first nozzle and the second nozzle, and it is convenient to adjust or replace the first nozzle and the second nozzle; among them, the detachable connection method that can be selected can be: bolt connection or socket connection, etc., of course, it can also be other detachable connection methods, and the embodiments of the present invention are not limited here.

[0078] In another embodiment, if Figure 4 and Figure 6 As shown, the furnace door lining 2 has a second nozzle and a conveying channel 207 inside, and the furnace door lining 2 is located in the space between the cooling medium channel 201 and the brick groove 3, and the two sides of the corresponding two brick groove side plates 4 are provided with strip grooves, the strip grooves, the brick grooves 3 and the corresponding brick groove side plates 4 form a raw gas channel 203, and the cooling medium space also includes the space in the two raw gas channels 203 and the space in the conveying channel 207;

[0079] The delivery channel 207 is communicated with the cooling medium inlet 202, so that the cooling medium in the cooling medium inlet 202 enters the delivery channel 207. The raw gas channel 203 has a first channel opening 204, a second channel opening 205 and a fourth channel opening 209. The first channel opening 204 of the raw gas channel 203 penetrates the brick groove side plate 4 and is communicated with the raw gas collection space 6. The raw gas collection space 6 is a space composed of the furnace door body 1, the brick groove side plate 4 and the furnace door frame 5 of the carbonization chamber. The fourth channel opening 209 of the raw gas channel 203 is communicated with the delivery channel 207. The second nozzle is arranged in the fourth channel opening 209. The second channel opening 205 of the raw gas channel 203 is communicated with the preset collection area.

[0080] The second nozzle sprays the cooling medium in the conveying channel 207 into the raw gas channel 203, so that the cooling medium flows in the raw gas channel 203 in a preset direction. The cooling medium flowing in the raw gas channel 203 in the preset direction attracts the raw gas in the raw gas collection space 6 to enter the raw gas channel 203 and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel 203 flow to the preset area of ​​the raw gas channel 203 in the preset direction, they enter the preset collection area through the second channel opening 205. Since the conveying channel 207 is a hollow structure, the volume of the cooling medium space is further increased, which is beneficial to suppress heat conduction during the coking process and further reduce the heat loss during the coking process. At the same time, the raw gas in the raw gas collection space 6 can also be discharged to the preset collection area, which can reduce the occurrence of intermittent smoke and dust leakage caused by factors such as loose sealing between the furnace door body 1 and the furnace door frame 5 of the carbonization chamber and pressure fluctuations in the carbonization chamber.

[0081] In a possible embodiment, the furnace door lining 2 has a first nozzle, a second nozzle and a conveying channel 207 inside, and the furnace door lining 2 is located in the space between the cooling medium channel 201 and the brick groove 3, and the two corresponding brick groove side panels 4 have strip grooves on both sides. The strip grooves, the brick grooves 3 and the corresponding brick groove side panels 4 constitute a raw gas channel 203. The raw gas channel 203 can have a first channel opening 204, a second channel opening 205, a third channel opening 206 and a fourth channel opening 209, wherein the specific connection relationship can refer to the above description, and the embodiment of the present invention will not be described in detail here.

[0082] In one embodiment, the furnace door lining 2 has two raw gas channels 203, a second nozzle and a delivery channel 207 inside, and the cooling medium space includes the space inside the two raw gas channels 203 and the space inside the delivery channel 207;

[0083] The delivery channel 207 has a delivery channel inlet so that the cooling medium is injected into the delivery channel 207 from the delivery channel inlet. The raw gas channel 203 has a first channel opening 204, a second channel opening 205 and a fourth channel opening 209. The first channel opening 204 of the raw gas channel 203 is connected to the raw gas collection space 6. The raw gas collection space 6 is a space composed of a furnace door body 1, a furnace door lining 2 and a furnace door frame 5 of the carbonization chamber. The fourth channel opening 209 of the raw gas channel 203 is connected to the delivery channel 207. The second nozzle is arranged in the fourth channel opening 209. The second channel opening 205 of the raw gas channel 203 is connected to a preset collection area. The delivery channel inlet can be a cooling medium inlet 202, or an inlet different from the cooling medium inlet 202. The embodiment of the present invention does not limit this.

[0084] The second nozzle sprays the cooling medium in the conveying channel 207 into the raw gas channel 203, so that the cooling medium flows in the raw gas channel 203 according to a preset direction. The cooling medium flowing in the raw gas channel 203 according to the preset direction attracts the raw gas in the raw gas collection space 6 into the raw gas channel 203, and flows according to the preset direction. When the raw gas and the cooling medium in the raw gas channel 203 flow to the preset area of ​​the raw gas channel 203 according to the preset direction, they enter the preset collection area through the second channel opening 205.

[0085] In another embodiment, it also includes: a brick groove 3 and two brick groove side plates 4, the brick groove 3 is fixed to the side of the furnace door body 1 close to the carbonization chamber, the furnace door lining 2 is inlaid and fixed to the side of the brick groove 3 away from the furnace door body 1, one end of the two brick groove side plates 4 is fixed to the brick groove 3, and the other end is inlaid and fixed to the opposite sides of the furnace door lining 2;

[0086] The furnace door lining 2 has a second nozzle and a conveying channel 207 inside, and the furnace door lining 2 has strip grooves on both sides corresponding to the two brick groove side plates 4. The strip grooves, the brick grooves 3 and the corresponding brick groove side plates 4 form a raw gas channel 203. The cooling medium space includes the space in the two raw gas channels 203 and the space in the conveying channel 207.

[0087] The delivery channel 207 has a delivery channel entrance so that the cooling medium is injected into the delivery channel 207 from the delivery channel entrance. The raw gas channel 203 has a first channel opening 204, a second channel opening 205 and a fourth channel opening 209. The first channel opening 204 of the raw gas channel 203 passes through the brick trough side plate 4 and is connected with the raw gas collection space 6. The raw gas collection space 6 is a space composed of the furnace door body 1, the brick trough side plate 4 and the furnace door frame 5 of the carbonization chamber. The fourth channel opening 209 of the raw gas channel 203 is connected with the delivery channel 207, and the second nozzle is arranged in the fourth channel opening 209. The second channel opening 205 of the raw gas channel 203 is connected with the preset collection area; wherein, the delivery channel entrance can be the cooling medium inlet 202, or it can be an entrance different from the cooling medium inlet 202, and the embodiment of the present invention is not limited here.

[0088] The second nozzle sprays the cooling medium in the conveying channel 207 into the raw gas channel 203, so that the cooling medium flows in the raw gas channel 203 according to a preset direction. The cooling medium flowing in the raw gas channel 203 according to the preset direction attracts the raw gas in the raw gas collection space 6 into the raw gas channel 203 and flows according to the preset direction. When the raw gas and the cooling medium in the raw gas channel 203 flow to the preset area of ​​the raw gas channel 203 according to the preset direction, they enter the preset collection area through the second channel opening 205.

[0089] Furthermore, it also includes a heat exchange pipe, which is located in the cooling medium channel 201, and contains at least one of coke oven gas, blast furnace gas and air; the coke oven gas, blast furnace gas and air after heat exchange can be supplied to downstream users. Of course, the heat exchange pipe can also contain desalted water, coking wastewater and industrial water, and the embodiment of the present invention is not limited here.

[0090] The embodiment of the present invention further provides a coking method based on any of the above-mentioned coke oven doors, which may specifically include: after starting the coking, injecting a cooling medium into the cooling medium space.

[0091] Specifically, by adopting the above-mentioned coking method provided in this embodiment, the heat emitted from the carbonization chamber will pass through the cooling medium space of the furnace door lining 2 and enter the outside of the carbonization chamber. Since the thermal conductivity of the cooling medium is very low, it is beneficial to inhibit heat conduction in the coking process, thereby reducing the heat loss in the coking process.

[0092] The embodiment of the present invention also provides another coking method based on any of the above coke oven doors, such as Figure 8 As shown, the following steps may be specifically included:

[0093] Step 801, after starting coking, injecting cooling medium into the cooling medium space;

[0094] Step 802: At the end of coking, air is injected into the cooling medium space as a cooling medium until the tar and graphite deposited in the cooling medium space are burned.

[0095] In this step, at the end of coking, since the tar and graphite deposited in the cooling medium space have been burned in the cooling medium space together with the injected air, after the coking process is completed, the furnace door is opened to avoid the combustion of the tar and graphite deposited in the cooling medium space with the outside air, which is beneficial to improving the safety of the production site.

[0096] The embodiment of the present invention also provides another coking method based on any of the above coke oven doors, such as Fig. 9 As shown, the following steps may be specifically included:

[0097] Step 901, after starting coking, injecting the cooling medium into the cooling medium space;

[0098] Step 902: At the end of coking, flue gas is injected into the cooling medium space as the cooling medium until the combustible gas in the cooling medium space is exhausted.

[0099] In this step, at the end of coking, since the combustible gas in the cooling medium space is discharged, after the coking process is completed, when the furnace door is opened, there is no combustible gas in the cooling medium space, thereby avoiding the occurrence of combustion and helping to improve the safety of the production site.

[0100] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0101] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. A coke oven door, characterized in that: include: A furnace door body (1) and a furnace door lining (2), wherein the furnace door lining (2) is connected to one side of the furnace door body (1) close to the carbonization chamber of the recovery coke oven, wherein: The furnace door lining (2) has a cooling medium space for accommodating a cooling medium inside, and is used to accommodate the injected cooling medium during the coking process; The furnace door lining (2) has a cooling medium channel (201) inside, and the cooling medium space includes the space inside the cooling medium channel (201); The cooling medium channel (201) has a cooling medium inlet (202), so that the cooling medium is injected into the cooling medium channel (201) from the cooling medium inlet (202); The furnace door lining (2) further comprises two raw gas channels (203) and a first nozzle, and the cooling medium space also comprises the space within the two raw gas channels (203); The raw gas channel (203) is located in the space between the cooling medium channel (201) and the furnace door body (1); the raw gas channel (203) has a first channel opening (204), a second channel opening (205) and a third channel opening (206); the first channel opening (204) of the raw gas channel (203) is in communication with a raw gas collection space (6); the raw gas collection space (6) is a space formed by the furnace door body (1), the furnace door lining (2) and the furnace door frame (5) of the carbonization chamber; the third channel opening (206) of the raw gas channel (203) is in communication with the cooling medium channel (201); the first nozzle is arranged in the third channel opening (206); and the second channel opening (205) of the raw gas collection space (6) is in communication with a preset collection area; The first nozzle sprays the cooling medium in the cooling medium channel (201) into the raw gas channel (203), so that the cooling medium flows in the raw gas channel (203) in a preset direction. The cooling medium flowing in the raw gas channel (203) in the preset direction attracts the raw gas in the raw gas collection space (6) into the raw gas channel (203) and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel (203) flow to a preset area of ​​the raw gas channel (203) in the preset direction, they enter the preset collection area through the second channel opening (205).

2. The furnace door according to claim 1, characterized in that: Also includes: A brick groove (3) and two brick groove side plates (4), wherein the brick groove (3) is fixed on one side of the furnace door body (1) close to the carbonization chamber of the recovery coke oven, and the furnace door lining (2) is inlaid and fixed on the side of the brick groove (3) away from the furnace door body (1), and one end of the two brick groove side plates (4) are fixed to the brick groove (3), and the other end is inlaid and fixed on the opposite sides of the furnace door lining (2).

3. The furnace door according to claim 1 or 2, characterized in that: The cooling medium includes at least one of flue gas, blast furnace gas, coke oven gas, hydrogen, water vapor and air.

4. The furnace door according to claim 1 or 2, characterized in that: It also comprises a heat exchange pipeline, which is located in the cooling medium channel (201), and contains at least one of coke oven gas, blast furnace gas and air.

5. The furnace door according to claim 1, characterized in that: Also includes: A brick groove (3) and two brick groove side plates (4), wherein the brick groove (3) is fixed on a side of the furnace door body (1) close to the carbonization chamber, and the furnace door lining (2) is inlaid and fixed on a side of the brick groove (3) away from the furnace door body (1), and one end of the two brick groove side plates (4) are fixed to the brick groove (3), and the other end is inlaid and fixed on opposite sides of the furnace door lining (2); The furnace door lining (2) has a second nozzle and a conveying channel (207) inside, and the furnace door lining (2) has strip grooves on both sides corresponding to the two brick groove side plates (4), the strip grooves, the brick grooves (3) and the corresponding brick groove side plates (4) form a raw gas channel (203), and the cooling medium space includes the space in the two raw gas channels (203) and the space in the conveying channel (207); The delivery channel (207) has a delivery channel inlet, so that the cooling medium is injected into the delivery channel (207) from the delivery channel inlet. The raw gas channel (203) has a first channel opening (204), a second channel opening (205) and a fourth channel opening (209). The first channel opening (204) of the raw gas channel (203) passes through the brick groove side plate (4) and is connected to the raw gas collection space (6). The raw gas collection space (6) is a space composed of the furnace door body (1), the brick groove side plate (4) and the furnace door frame (5) of the carbonization chamber. The fourth channel opening (209) of the raw gas channel (203) is connected to the delivery channel (207). The second nozzle is arranged in the fourth channel opening (209). The second channel opening (205) of the raw gas channel (203) is connected to a preset collection area. The second nozzle sprays the cooling medium in the delivery channel (207) into the raw gas channel (203), so that the cooling medium flows in the raw gas channel (203) in a preset direction. The cooling medium flowing in the raw gas channel (203) in the preset direction attracts the raw gas in the raw gas collection space (6) into the raw gas channel (203) and flows in the preset direction. When the raw gas and the cooling medium in the raw gas channel (203) flow to a preset area of ​​the raw gas channel (203) in the preset direction, they enter the preset collection area through the second channel opening (205).

6. A coking method based on the coke oven door according to any one of claims 1 to 5, characterized in that: include: After coking is started, the cooling medium is injected into the cooling medium space.

7. The method according to claim 6, characterized in that Also includes: At the end of coking, air is injected into the cooling medium space as the cooling medium until the tar and graphite deposited in the cooling medium space are burned.

8. The method according to claim 6, characterized in that Also includes: At the end of coking, flue gas is injected into the cooling medium space as the cooling medium until the combustible gas in the cooling medium space is exhausted.

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