A coke oven door

Abstract

The coke oven door provided by the embodiment of the present application is used for sealing a carbonization chamber, and comprises a door body, a door web, an inner brick groove and a refractory lining; the door web is arranged on one side of the door body close to the carbonization chamber; the inner brick groove is arranged on one side of the door web close to the carbonization chamber, and is fixedly connected with the door body through the door web; the refractory lining is arranged on one side of the door web close to the carbonization chamber, and is wrapped outside the inner brick groove, and part of the surface of the refractory lining is in contact with the door web, so that the inner brick groove is sealed between the door web and the refractory lining; the coke oven door of the present application realizes the protection of the inner brick groove by sealing the inner brick groove between the door web and the refractory lining, and isolates the inner brick groove from the internal environment of the carbonization chamber, so that the inner brick groove is not directly in contact with the gas in the carbonization chamber, thereby reducing the influence of external heat on the inner brick groove and reducing the occurrence of the burning and melting of the inner brick groove caused by high temperature.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coking, in particular to a coke oven door. BACKGROUND

[0002] The coke oven door is provided on both sides of the carbonization chamber of the coke oven, and plays a sealing and heat insulation role in the coking production process. The coke oven door comprises a door body, a brick groove, a door lining, a door web and a sealing knife edge. The sealing knife edge is rigidly pressed on the sealing surface of the door frame of the carbonization chamber. The door sealing knife edge, the door web, the door frame and the brick groove form a closed space, and part of the high-temperature raw coal gas and smoke dust generated in the dry distillation process of coal in the carbonization chamber is accumulated in this space. The conventional coke oven door has a metal structure of the brick groove. Since the brick groove is exposed to the outside and directly contacts with the high-temperature raw coal gas and smoke dust, when local high temperature occurs at the coke oven door, the production accident of brick groove melting is prone to occur.

[0003] The heat recovery coke oven includes a vertical heat recovery coke oven and a horizontal heat recovery coke oven. The carbonization chamber of the heat recovery coke oven is in a micro-negative pressure state in the production process. Under the negative pressure of the carbonization chamber, the external air is sucked into the carbonization chamber through the sealing surface of the coke oven door on both sides of the carbonization chamber. The sucked air is combusted with the raw coal gas in the carbonization chamber near the sealing surface of the coke oven door, and high temperature is generated in the local combustion area. Compared with the ordinary coke oven, the heat recovery coke oven is more prone to production accidents such as brick groove melting. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a coke oven door to reduce the occurrence of brick groove melting caused by high temperature. The specific technical scheme is as follows:

[0005] The coke oven door is used for sealing the carbonization chamber, and comprises a door body, a door web, an internal brick groove and a refractory lining. The door web is arranged on one side of the door body close to the carbonization chamber. The internal brick groove is arranged on one side of the door web close to the carbonization chamber, and is fixedly connected with the door body through the door web. The refractory lining is arranged on one side of the door web close to the carbonization chamber, and covers the outside of the internal brick groove. Part of the surface of the refractory lining is in contact with the door web, so that the internal brick groove is sealed between the door web and the refractory lining.

[0006] In some embodiments of the present application, the internal brick groove comprises a bottom plate and two side plates. The two side plates are fixedly connected with the bottom plate, or the two side plates and the bottom plate are an integral structure.

[0007] The bottom plate is fixedly connected with the door body through the door web. The two side plates are oppositely and spacedly arranged, and extend to the direction of the carbonization chamber.

[0008] The length direction of the two side plates and the bottom plate is consistent with the height direction of the furnace door body.

[0009] In some embodiments of the present application, the coke oven door further comprises a heat insulation layer; the thermal conductivity of the heat insulation layer is less than the thermal conductivity of the inner brick groove and the refractory lining;

[0010] The heat insulation layer is arranged in the interval space between the two side plates and the bottom plate.

[0011] In some embodiments of the present application, the refractory lining is provided with a mounting space for accommodating the inner brick groove;

[0012] The shape of the mounting space is adapted to the shape of the structure after the heat insulation layer and the inner brick groove are assembled.

[0013] In some embodiments of the present application, the two side plates are respectively provided with a protruding structure on the surface away from each other; the bottom plate and the two side plates of the inner brick groove form a structure with a π-shaped cross section;

[0014] The inner wall of the mounting space of the refractory lining is provided with a recessed structure corresponding to the protruding structure; the protruding structure is arranged in the recessed structure.

[0015] In some embodiments of the present application, the included angle between the surface of the side plate close to each other and the bottom plate is greater than or equal to 90 degrees.

[0016] In some embodiments of the present application, the inner brick groove further comprises two auxiliary plates, the two auxiliary plates are fixedly connected with the bottom plate or the two auxiliary plates and the bottom plate are an integral structure;

[0017] The two auxiliary plates are oppositely and spacedly arranged, and the two auxiliary plates extend to the direction of the carbonization chamber;

[0018] The length direction of the two auxiliary plates is perpendicular to the height direction of the furnace door body.

[0019] The two side plates, the bottom plate, the two auxiliary plates and the refractory lining jointly constitute an accommodating space for accommodating the heat insulation layer.

[0020] In some embodiments of the present application, the number of the inner brick grooves is multiple, and the inner brick grooves are arranged in sequence along the height direction of the furnace door body.

[0021] In some embodiments of the present application, the refractory lining comprises a plurality of refractory bricks, and the plurality of refractory bricks are arranged in sequence along the height direction of the furnace door body.

[0022] The internal brick groove is arranged between two adjacent refractory bricks.

[0023] In some embodiments of the present application, a connecting hole is arranged on the internal brick groove, a through hole is arranged on the door body and the door web respectively, and the fastener is arranged in the connecting hole and the through hole to fixedly connect the internal brick groove, the door web and the door body.

[0024] The embodiment of the present application has the following beneficial effects:

[0025] The coke oven door of the present application is used for sealing the carbonization chamber, and comprises a door body, a door web, an internal brick groove and a refractory lining. The door web is arranged on the side of the door body close to the carbonization chamber. The internal brick groove is arranged on the side of the door web close to the carbonization chamber, and is fixedly connected with the door body through the door web. The refractory lining is arranged on the side of the door web close to the carbonization chamber, and covers the outside of the internal brick groove. Part of the surface of the refractory lining is in contact with the door web, so that the internal brick groove is sealed between the door web and the refractory lining. Compared with the coke oven door in the related art, in which the brick groove is exposed and directly contacts with the high-temperature dry coal gas and smoke, the coke oven door of the present application realizes the protection of the internal brick groove by sealing the internal brick groove between the door web and the refractory lining, and isolates the internal brick groove from the internal environment of the carbonization chamber, so that the internal brick groove does not directly contact with the gas in the carbonization chamber, thereby reducing the influence of external heat on the internal brick groove and reducing the occurrence of the burning and melting of the internal brick groove caused by high temperature. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other embodiments can also be obtained by those skilled in the art according to these drawings.

[0027] Figure 1 The assembly drawing of the coke oven door and the carbonization chamber in the embodiment of the present application;

[0028] Figure 2 The connection relationship diagram of the door web, the internal brick groove, the refractory lining and the bracket in the embodiment of the present application;

[0029] Figure 3 The first perspective view of the brick groove in Figure 1

[0030] The second perspective view of the brick groove in Figure 4 Figure 1

[0031] Figure 5 ​​is a front view of Figure 3

[0032] Figure 6 is a side view of Figure 3

[0033] Figure 7 is a bottom view of Figure 3

[0034] Figure 8 is an A-A sectional view of Figure 3

[0035] Figure 9 is a sectional view of the refractory lining in Figure 1

[0036] Figure 10 is a bottom view of the brick channel in another embodiment of the present application.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] furnace door 10; carbonization chamber 20; door frame 21; door body 100; inner channel 200; bottom plate 210; side plate 220; protruding structure 221; connecting hole 230; auxiliary plate 240; refractory lining 300; refractory brick 301; recessed structure 310; heat insulation layer 400; included angle a; sealing blade 500; door web 600; reinforcing rib 700; screw 800; bracket 900. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art based on the present application belong to the scope of protection of the present application.

[0040] The coking industry is a basic industry with high pollution, high emission and high energy consumption, which provides important raw materials (coke) for the production of the steel industry. The conventional coke oven is an important pollution source, and the main pollutants include waste gas, waste water and dust, etc. With the steel industry capacity tending to saturation and the increasingly strict environmental protection, energy saving and emission reduction and clean production of the coking industry are imperative. The coke oven door is provided on both sides of the carbonization chamber of the coke oven, and plays a sealing and heat insulation role in the coking production process. The coke oven door includes a door body, a brick channel, a door lining, a door web and a sealing blade, the sealing blade is rigidly pressed on the sealing surface of the door frame of the carbonization chamber, and the sealing blade, the door web, the door frame and the brick channel form a closed space. In the process of cooperating with the dry distillation of coal in the carbonization chamber, part of the high-temperature raw gas and smoke dust escapes through the gap between the door lining brick and the furnace wall and gathers in the above-mentioned closed space. ​​​​​

[0041] In the conventional coke oven production process, due to the deformation and failure of the coke oven door and the coke oven door iron, and the pressure fluctuation of the carbonization chamber, the sealing surface between the coke oven door and the coke oven door iron inevitably produces intermittent smoke escape; especially during the coal loading process, a large amount of smoke overflow will cause serious pollution to the environment.

[0042] The heat recovery coke oven includes a vertical heat recovery coke oven and a horizontal heat recovery coke oven. The carbonization chamber of the heat recovery coke oven is in a micro-negative pressure state during the production process. Under the negative pressure of the carbonization chamber, external air is sucked into the carbonization chamber through the sealing surface of the coke oven door on both sides of the carbonization chamber. The sucked air burns with the raw gas in the carbonization chamber near the sealing surface of the coke oven door, and high temperature is generated in the local area of the combustion, which may cause the production accidents such as burning and melting of the coke oven door body and the metal structure such as the brick groove.

[0043] In addition, the coking process is a high-temperature dry distillation process, and the carbonization chamber is in a high-temperature state. The heat in the carbonization chamber is finally dissipated to the environment in the form of convection and radiation through the outer surface of the coke oven door body via the coke oven door lining and the coke oven door body. Under normal production conditions, the surface temperature of the coke oven door is between 50℃ and 200℃. The coke oven door surface dissipates a large amount of heat to the environment in the form of convection and radiation, which will cause serious heat pollution; not only a large amount of energy in the coking process is lost, which is not conducive to the heating of the coke oven door, but also the temperature of the coke oven door is easily low, which affects the quality of the coke oven door, makes the coke oven door not mature, the coke strength is low and the reactivity is high, and the temperature of the coke oven machine and the coke side operation table is high, which is not conducive to the production operation and detection work, and also reduces the thermal efficiency of the coke oven. The heat loss of the coke oven door surface accounts for 5%-10% of the total heat supply of the coke oven. Reducing the heat loss of the coke oven surface not only can improve the thermal efficiency of the coke oven, but also can reduce the amount of coal gas used for heating the coke oven, and further reduce the emission of greenhouse gases (carbon dioxide).

[0044] In order to reduce the occurrence of brick groove burning caused by high temperature, the embodiment of the present application proposes a coke oven door 10, as Figure 1As shown, the coke oven door 10 is used to seal the coking chamber 20, and the coke oven door 10 comprises a door body 100, a door web 600, an internal brick groove 200 and a refractory lining 300. Specifically, the door web 600 is arranged on one side of the door body 100 close to the coking chamber 20; the internal brick groove 200 is arranged on one side of the door web 600 close to the coking chamber 20, and the internal brick groove 200 is fixedly connected with the door body 100 through the door web 600; and the refractory lining 300 is arranged on one side of the door web 600 close to the coking chamber 20, and covers the outside of the internal brick groove 200, and part of the surface of the refractory lining 300 is in contact with the door web 600, so that the internal brick groove 200 is sealed between the door web 600 and the refractory lining 300.

[0045] The coke oven door 10 of the present application is used to seal the coking chamber 20, and the coke oven door 10 comprises a door body 100, a door web 600, an internal brick groove 200 and a refractory lining 300; the door web 600 is arranged on one side of the door body 100 close to the coking chamber 20; the internal brick groove 200 is arranged on one side of the door web 600 close to the coking chamber 20, and the internal brick groove 200 is fixedly connected with the door body 100 through the door web 600; and the refractory lining 300 is arranged on one side of the door web 600 close to the coking chamber 20, and covers the outside of the internal brick groove 200, and part of the surface of the refractory lining 300 is in contact with the door web 600, so that the internal brick groove 200 is sealed between the door web 600 and the refractory lining 300. Compared with the coke oven door 10 in the related art, in which the brick groove is exposed and directly contacted with the high-temperature raw coke oven gas and smoke, the coke oven door 10 of the present application realizes the protection of the internal brick groove 200 by sealing the internal brick groove 200 between the door web 600 and the refractory lining 300, and isolates the internal brick groove 200 from the internal environment of the coking chamber 20, so that the internal brick groove 200 is not directly contacted with the gas in the coking chamber 20, thereby reducing the influence of external heat on the internal brick groove 200 and reducing the occurrence of the burning and melting of the internal brick groove 200 caused by high temperature.

[0046] During the production of the heat recovery coke oven, the coking chamber 20 is in a negative pressure state, and the outside air is sucked into the coking chamber 20 through the part where the knife edge sealing surface is not tight, and is combusted in the space formed by the door web 600 and the refractory lining 300. For the heat recovery coke oven, the external heat can refer to the heat generated by the combustion of the high-temperature and corrosive raw coke oven gas and the sucked air.

[0047] Specifically, the refractory lining can be a shaped refractory product or a refractory castable, and preferably a fused silica brick, a floating bead brick and a cordierite brick with excellent thermal shock stability. In some other embodiments of the present application, the refractory lining 300 can also be selected from other materials, which are not limited in the present application.

[0048] As Figure 1As shown, in some embodiments of this application, sealing blades 500 are formed around the perimeter of the furnace door web 600; the sealing blades 500 and the furnace door web 600 are an integral structure, formed by stamping from a single steel plate, or by welding or other connection methods; the internal brick groove 200, the furnace door web 600, and the furnace door body 100 are connected by fasteners (screws 800 or bolts); the sealing blades 500 are pressed against the furnace door frame 21 of the carbonization chamber 20. The sealing blades 500, the furnace door web 600, the furnace door frame 21, and the refractory lining 300 work together to seal the carbonization chamber 20, preventing the high-temperature raw coal gas and soot generated during the dry distillation of coal in the carbonization chamber 20 from escaping.

[0049] like Figure 1 As shown, in some embodiments of this application, the internal brick groove 200 is provided with a connecting hole 230, and the furnace door body 100 and the furnace door web plate 600 are respectively provided with through holes. Fasteners (screws 800) are inserted into the connecting hole 230 and the through holes to fix the internal brick groove 200, the furnace door web plate 600 and the furnace door body 100 together. The internal brick groove 200, the furnace door web plate 600 and the furnace door body 100 are fixedly connected by a set of fasteners, which is simple.

[0050] It is understandable that, such as Figure 1 As shown, the direction closer to and farther from the carbonization chamber 20 is the Y direction, and the direction perpendicular to it is the X direction. Figure 2 As shown, the direction perpendicular to the plane containing the X and Y directions is the height direction (H direction) of the furnace door body 100.

[0051] like Figure 2 As shown, a groove 900 is provided on the belly plate 600 of the furnace door, and the refractory lining 300 is located in the groove 900. The groove 900 can restrict the displacement of the refractory lining 300 in the H direction, so that the refractory lining 300 will not fall under the action of gravity.

[0052] like Figure 3 As shown, in some embodiments of this application, the internal brick groove 200 includes a bottom plate 210 and two side plates 220; the two side plates 220 are fixedly connected to the bottom plate 210, or the two side plates 220 and the bottom plate 210 are an integral structure, and the two side plates 220 are opposite to each other and spaced apart; for example Figure 1 As shown, the bottom plate 210 is fixedly connected to the furnace door body 100 via the furnace door web plate 600, and the connecting holes 230 on the internal brick groove 200 are provided on the bottom plate 210; the two side plates 220 extend in the direction of the carbonization chamber 20 (along the Y direction); the length directions of the two side plates 220 and the bottom plate 210 are consistent with the height direction (H direction) of the furnace door body 100. To better illustrate the structure of the internal brick groove 200, Figures 4 to 7 The structure of the internal brick groove 200 is shown from multiple perspectives. Figure 8 forFigure 3 AA section view of the internal brick groove 200.

[0053] Specifically, the internal brick groove 200 can be a metal structural component. The side plate 220 and the bottom plate 210 of the internal brick groove 200 can be formed into an integral structure by integral casting; or they can be formed into separate structures by separate casting and then connected and fixed by fasteners or welding. This application does not limit this.

[0054] Furthermore, the internal brick groove 200 can also be provided with reinforcing ribs 700 between the bottom plate 210 and the side plate 220 to improve the strength of the internal brick groove 200, which is conducive to improving the working stability of the coke oven door 10 and reducing the occurrence of internal brick groove 200 breakage.

[0055] like Figure 8 As shown, in some embodiments of this application, the angle α between the adjacent surfaces of the side plates 220 and the bottom plate 210 is greater than or equal to 90 degrees. During the process of removing and hanging the coke oven door 10, the refractory lining 300 will be subjected to forces in the X and Y directions. The angle α between the adjacent surfaces of the side plates 220 and the bottom plate 210 is greater than or equal to 90 degrees, which can ensure that the refractory lining does not fall off during the above process.

[0056] like Figure 8 As shown, in some embodiments of this application, protrusions 221 are respectively provided on the surfaces of the two side plates 220 that are far apart from each other; the bottom plate 210 of the internal brick groove 200 and the two side plates 220 form a structure with a π-shaped cross section; as shown Figure 1 and Figure 9 As shown, the inner wall of the installation space of the refractory lining 300 is provided with a recessed structure 310 corresponding to the protruding structure 221; the protruding structure 221 is disposed in the recessed structure 310.

[0057] The above describes the connection method of the refractory lining 300 to the internal brick groove 200. The protruding structure 221 and the recessed structure 310 cooperate with each other to better limit the displacement of the refractory lining 300 in the X and Y directions, and prevent the internal brick groove 200 from falling out of the installation space of the refractory lining 300 during the process of removing and hanging the coke oven door 10.

[0058] like Figure 1 As shown, in some embodiments of this application, the coke oven door 10 further includes a heat insulation layer 400; the thermal conductivity of the heat insulation layer 400 is lower than that of the internal brick groove 200 and the refractory lining 300; the heat insulation layer 400 is disposed in the space between the two side plates 220 and the bottom plate 210. Compared with the thermal conductivity of the internal brick groove 200 and the refractory lining 300, the heat insulation layer 400 has a smaller thermal conductivity and lower thermal conductivity, which can reduce the heat loss of the carbonization chamber 20 through the coke oven door 10.

[0059] Specifically, the material of the heat insulation layer 400 can be aerogel, ceramic fiber, or heat insulation brick, etc. Aerogel, ceramic fiber, and heat insulation brick, etc. have the advantages of light weight, high temperature resistance, good thermal stability, low thermal conductivity, and mechanical shock resistance, etc. In some other embodiments of the present application, the heat insulation layer 400 can also be other materials that meet the heat insulation performance, which are not limited in the present application.

[0060] In addition, the material used to prepare the heat insulation layer 400 can be less dense than the density of the internal brick groove 200, which can reduce the overall weight of the coke oven door 10 and reduce the working load of the door pulling mechanism used to control the coke oven door 10.

[0061] As shown in FIGS. 1 and 2, in some embodiments of the present application, the refractory lining 300 is provided with a mounting space for accommodating the internal brick groove 200; the shape of the mounting space is adapted to the shape of the structure after the heat insulation layer 400 and the internal brick groove 200 are assembled, so that the refractory lining 300, the heat insulation layer 400, and the internal brick groove 200 can be tightly combined, which is beneficial to improve the working stability of the coke oven door 10. Figure 1 Figure 9 As shown in FIGS. 1 and 2, in some embodiments of the present application, the refractory lining 300 is provided with a mounting space for accommodating the internal brick groove 200; the shape of the mounting space is adapted to the shape of the structure after the heat insulation layer 400 and the internal brick groove 200 are assembled, so that the refractory lining 300, the heat insulation layer 400, and the internal brick groove 200 can be tightly combined, which is beneficial to improve the working stability of the coke oven door 10.

[0062] As shown in FIGS. 1 and 2, in some embodiments of the present application, the refractory lining 300 is provided with a mounting space for accommodating the internal brick groove 200; the shape of the mounting space is adapted to the shape of the structure after the heat insulation layer 400 and the internal brick groove 200 are assembled, so that the refractory lining 300, the heat insulation layer 400, and the internal brick groove 200 can be tightly combined, which is beneficial to improve the working stability of the coke oven door 10. Figure 2 As shown in FIGS. 1 and 2, in some embodiments of the present application, the refractory lining 300 is provided with a mounting space for accommodating the internal brick groove 200; the shape of the mounting space is adapted to the shape of the structure after the heat insulation layer 400 and the internal brick groove 200 are assembled, so that the refractory lining 300, the heat insulation layer 400, and the internal brick groove 200 can be tightly combined, which is beneficial to improve the working stability of the coke oven door 10.

[0063] Figure 2 As shown in FIGS. 1 and 2, in some embodiments of the present application, the refractory lining 300 is provided with a mounting space for accommodating the internal brick groove 200; the shape of the mounting space is adapted to the shape of the structure after the heat insulation layer 400 and the internal brick groove 200 are assembled, so that the refractory lining 300, the heat insulation layer 400, and the internal brick groove 200 can be tightly combined, which is beneficial to improve the working stability of the coke oven door 10.

[0064] As shown in FIGS. 1 and 2, in some embodiments of the present application, the refractory lining 300 is provided with a mounting space for accommodating the internal brick groove 200; the shape of the mounting space is adapted to the shape of the structure after the heat insulation layer 400 and the internal brick groove 200 are assembled, so that the refractory lining 300, the heat insulation layer 400, and the internal brick groove 200 can be tightly combined, which is beneficial to improve the working stability of the coke oven door 10. Figure 10 ​​As shown, in some other embodiments of the present application, the inner brick groove 200 can further include two auxiliary plates 240 fixedly connected with the bottom plate 210, which are an integral structure with the bottom plate 210; the two auxiliary plates 240 are oppositely and spacedly arranged, and extend toward the direction in which the carbonization chamber 20 is located; the length direction of the two auxiliary plates 240 is perpendicular to the height direction of the furnace door body 100; the two side plates 220, the bottom plate 210, the two auxiliary plates 240 and the refractory lining 300 jointly constitute a containing space for containing the heat insulation layer 400. That is, the length direction of the auxiliary plates 240 and the side plates 220 of the inner brick groove 200 can be perpendicular to each other.

[0065] The inner brick groove 200 and the refractory lining 300 can limit the heat insulation layer 400 in the X direction and the H direction, and the refractory lining 300 only needs to cooperate with the inner brick groove 200 to limit the heat insulation layer 400 in the Y direction, so that the setting mode of the refractory lining 300 is more flexible.

[0066] Specifically, the auxiliary plates 240 and the bottom plate 210 of the inner brick groove 200 can be formed as an integral structure by using an integral casting process; or can be formed as a split structure by using a separate casting process, and then connected and fixed by using fasteners or welding, which is not limited in the present application.

[0067] The coke oven door 10 of the embodiment of the present application greatly reduces the occurrence of the high-temperature burning loss of the inner brick groove 200 by designing the inner brick groove 200 inside the refractory lining 300, and covering the inner brick groove 200 by the refractory lining 300 and the furnace door web 600, instead of the traditional brick groove covering lining mode. By filling the heat insulation layer 400 in the inner brick groove 200, the temperature of the outer surface of the coke oven door 10 is reduced, thereby reducing the heat loss of the surface of the coke oven door 10; at the same time, filling the heat insulation layer 400 in the inner brick groove 200 can effectively reduce the weight of the coke oven door 10 as a whole, thereby reducing the energy loss in the operation process of the coke oven door 10. The coke oven door 10 of the embodiment of the present application is suitable for conventional coke ovens, vertical heat recovery coke ovens and horizontal heat recovery coke ovens.

[0068] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0069] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A coke oven door, characterized in that, For sealing the carbonization chamber (20), the coke oven door includes: a door body (100), a door web (600), an internal brick groove (200), and a refractory lining (300). The furnace door web (600) is located on the side of the furnace door body (100) near the carbonization chamber (20); The internal brick groove (200) is located on the side of the furnace door web plate (600) near the carbonization chamber (20), and the internal brick groove (200) is fixedly connected to the furnace door body (100) through the furnace door web plate (600); The refractory lining (300) is disposed on the side of the furnace door web (600) near the carbonization chamber (20), covering the outside of the inner brick groove (200), and a portion of the surface of the refractory lining (300) is in contact with the furnace door web (600) so that the inner brick groove (200) is sealed between the furnace door web (600) and the refractory lining (300); The internal brick groove (200) includes a bottom plate (210) and two side plates (220); the two side plates (220) are fixedly connected to the bottom plate (210), or the two side plates (220) and the bottom plate (210) are an integral structure; The bottom plate (210) is fixedly connected to the furnace door body (100) through the furnace door web plate (600); the two side plates (220) are arranged opposite to each other and spaced apart, and the two side plates (220) extend in the direction of the carbonization chamber (20); The length direction of the two side plates (220) and the bottom plate (210) is consistent with the height direction of the furnace door body (100); The coke oven door also includes a heat insulation layer (400). The refractory lining (300) is provided with an installation space for accommodating the internal brick groove (200); The shape of the installation space is adapted to the shape of the structure after the heat insulation layer (400) and the internal brick groove (200) are assembled; The two side plates (220) are provided with protruding structures (221) on their mutually distant surfaces; the bottom plate (210) of the inner brick groove (200) and the two side plates (220) form a structure with a π-shaped cross section; The inner wall of the installation space of the refractory lining (300) is provided with a recessed structure (310) corresponding to the protruding structure (221); the protruding structure (221) is disposed in the recessed structure (310).

2. The coke oven door according to claim 1, characterized in that, The thermal conductivity of the insulation layer (400) is less than that of the internal brick groove (200) and the refractory lining (300); The heat insulation layer (400) is disposed in the space between the two side plates (220) and the bottom plate (210).

3. The coke oven door according to claim 1, characterized in that, The angle (α) between the surfaces of the side plates (220) that are close to each other and the bottom plate (210) is greater than or equal to 90 degrees.

4. The coke oven door according to claim 2 or 3, characterized in that, The internal brick groove (200) also includes two auxiliary plates (240), which are fixedly connected to the base plate (210), or the two auxiliary plates (240) and the base plate (210) are an integral structure; The two auxiliary plates (240) are arranged opposite to each other and spaced apart, and the two auxiliary plates (240) extend in the direction of the carbonization chamber (20); The length direction of the two auxiliary plates (240) is perpendicular to the height direction of the furnace door body (100); The two side plates (220), the bottom plate (210), the two auxiliary plates (240), and the fire-resistant lining (300) together constitute a receiving space for accommodating the heat insulation layer (400).

5. The coke oven door according to claim 1, characterized in that, The number of internal brick grooves (200) is multiple, and they are arranged sequentially along the height direction of the furnace door body (100).

6. The coke oven door according to claim 5, characterized in that, The refractory lining (300) includes a plurality of refractory bricks (301), which are arranged sequentially along the height direction of the furnace door body (100); The adjacent internal brick grooves (200) are spaced apart, and two refractory bricks (301) correspond to one internal brick groove (200).

7. The coke oven door according to claim 1, characterized in that, The internal brick groove (200) is provided with a connecting hole (230), and the furnace door body (100) and the furnace door web plate (600) are respectively provided with through holes. Fasteners are inserted into the connecting hole (230) and the through hole to fix the internal brick groove (200), the furnace door web plate (600) and the furnace door body (100) together.

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