Semi-coke furnace top waste gas treatment device

Abstract

According to the semi-coke furnace top waste gas treatment device, a discharging plate is arranged at the communicating position of an auxiliary coal box and a closed coal box, a nitrogen sealing assembly is fixedly arranged on the discharging plate, and the working end of the nitrogen sealing assembly is arranged at the end, close to the communicating position of the auxiliary coal box and the closed coal box, of the discharging plate. And the working end of the first fan extends into the internal corner of the closed coal box. When the unloading plate opens the coal supplementing channel between the auxiliary coal box and the closed coal box, the nitrogen sealing assembly releases nitrogen to the communication position between the auxiliary coal box and the closed coal box, raw coke oven gas at the top of the closed coal box is isolated in the closed coal box, and the situation that smoke and / or the raw coke oven gas are / is exhausted into the atmosphere after escaping to the auxiliary coal box is avoided; and therefore, the environment cleanness is ensured. The output end of the first fan extends into the closed coal box and reaches the corner of the closed coal box, so that stable release of the raw gas can be guaranteed, the lower explosion limit of the raw gas can be reduced, and stable operation of equipment and personal safety of workers can be guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas treatment equipment, and in particular to a waste gas treatment device for a semi-coke furnace top. Background Art

[0002] Liquid oil products such as coal tar are stored in the lignite tank area. During the process of feeding, discharging and storage, V0C will be continuously discharged from the pressure relief valve on the top of the tank. The main emission methods are "big breathing" caused by the pressure change in the tank caused by feeding and discharging, and "small breathing" caused by the ambient temperature difference.

[0003] During the production of lignite, the coal bunker on the furnace top is arranged in an open style, and the lower part of the coal bunker is separated or connected to the carbonization furnace through a discharge valve to achieve the purpose of coal feeding.

[0004] After the auxiliary coal box on the top of the semi-coal furnace is closed, the flat discharge valve on the top of the closed coal box is opened during the coal replenishment operation, and the raw coal gas escapes into the closed coal box. The coal naturally falls into a cone shape, resulting in mixed gas in the four corners of the top of the closed coal box. There is a feed port on the top of the closed coal box. When replenishing coal, the dust removal device is started, which will draw smoke and coal dust into the dust removal device, which is easy to cause fire or explosion accidents.

[0005] Therefore, there is an urgent need for a blue charcoal furnace top exhaust gas treatment device to solve the above-mentioned problem. Utility Model Content

[0006] The embodiment of the present application provides a blue charcoal furnace top exhaust gas treatment device, which aims to reduce the lower explosion limit of raw coal gas while reducing the oxygen content in the gas.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a blue charcoal furnace top exhaust gas treatment device, comprising a discharge plate, a nitrogen sealing component, and a first fan;

[0008] The auxiliary coal box is connected to the top of the vertical closed coal box;

[0009] The unloading plate is arranged at the connection between the auxiliary coal box and the closed coal box, the upper plate surface of the unloading plate is slidably connected to the bottom end surface of the auxiliary coal box, and the lower plate surface of the unloading plate is slidably connected to the top end surface of the closed coal box;

[0010] The nitrogen sealing component is fixedly arranged on the discharge plate, and the working end of the nitrogen sealing component is arranged at one end of the discharge plate close to the connection between the auxiliary coal box and the closed coal box, so as to restrict the gas escape path;

[0011] The first fan is fixedly arranged on the top end surface of the closed coal box, and the working end of the first fan extends into the inner corner of the closed coal box.

[0012] Furthermore, it also includes a second fan; the second fan is arranged on the top of the closed coal box and is spaced apart from the first fan. The working end of the second fan extends into the interior of the auxiliary coal box and is arranged above the connection between the auxiliary coal box and the closed coal box.

[0013] Furthermore, the nitrogen sealing assembly includes a nitrogen pipeline, a solenoid valve, and a nozzle;

[0014] The nitrogen pipeline is fixedly arranged inside the unloading plate, and the axial length direction of the nitrogen pipeline is consistent with the displacement direction of the unloading plate;

[0015] The solenoid valve is fixedly arranged on the top end surface of the discharge plate away from the auxiliary coal box, and the output end of the solenoid valve is connected with the input end of the nitrogen pipeline;

[0016] The nozzle is fixedly arranged at the output end of the nitrogen pipeline, and the end face of the output end of the nozzle is flush with the end face of one side of the discharge plate close to the auxiliary coal box.

[0017] Furthermore, the nozzle as a whole is in a trumpet-shaped structure with one end being large and the other end being small, and the large-diameter end of the nozzle faces the connection point between the auxiliary coal box and the closed coal box.

[0018] Further, it also includes a mounting plate and a telescopic cylinder;

[0019] The mounting plate is horizontally fixedly arranged on a side surface of the closed coal box close to the discharge plate, and the mounting plate is located below the discharge plate;

[0020] The input end of the telescopic cylinder is hinged to the top surface of the mounting plate, and the output end of the telescopic cylinder is fixedly connected to the bottom of the unloading plate, which can drive the unloading plate to move horizontally between the auxiliary coal box and the closed coal box.

[0021] Furthermore, a coal inlet is provided at the top of the auxiliary coal box, and a coal inlet pipe is vertically provided at the edge of the coal inlet. One end of the coal inlet pipe is fixedly connected to the top of the auxiliary coal box, and the other end thereof is connected to the output end of the external coal delivery device.

[0022] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects:

[0023] In the present application, when the discharge plate opens the coal supply channel between the auxiliary coal box and the closed coal box, the nitrogen sealing assembly releases nitrogen to the connection between the auxiliary coal box and the closed coal box, isolating the raw coal gas on the top of the closed coal box in the closed coal box, preventing smoke and / or raw coal gas from escaping to the auxiliary coal box and then being discharged into the atmosphere, thereby ensuring a clean environment. The output end of the first fan extends into the interior of the closed coal box and reaches its corner, which can not only ensure the stable release of raw coal gas and reduce the lower explosion limit of raw coal gas, but also ensure the stable operation of the equipment and the personal safety of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments of the utility model or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure provided for an embodiment of the present application;

[0026] Figure 2 Provided for the embodiments of this application Figure 1 A partial enlarged view of area A.

[0027] Icons: 1-closed coal box; 2-auxiliary coal box; 3-unloading plate; 4-nitrogen pipeline; 5-solenoid valve; 6-nozzle; 7-first fan; 8-second fan; 9-coal inlet; 10-coal inlet pipe; 11-mounting plate; 12-telescopic cylinder; DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0030] Combination Figure 1-Figure 2As shown, a semi-coke furnace top waste gas treatment device includes a discharge plate 3, a nitrogen sealing component, and a first fan 7; the auxiliary coal box 2 is connected to the top of the upright closed coal box 1; the discharge plate 3 is arranged at the connection point between the auxiliary coal box 2 and the closed coal box 1, the upper plate surface of the discharge plate 3 is slidably connected to the bottom end surface of the auxiliary coal box 2, and the lower plate surface of the discharge plate 3 is slidably connected to the top end surface of the closed coal box 1; the nitrogen sealing component is fixedly arranged on the discharge plate 3, and the working end of the nitrogen sealing component is arranged at one end of the discharge plate 3 close to the connection point between the auxiliary coal box 2 and the closed coal box 1, which can restrict the gas escape path; the first fan 7 is fixedly arranged on the top end surface of the closed coal box 1, and the working end of the first fan 7 extends into the inner corner of the closed coal box 1.

[0031] The blue charcoal furnace top waste gas treatment device in this application is mainly used in the processing operation scene of raw coal gas when the blue charcoal furnace top is supplemented with coal. It is composed of a discharge plate 3, a nitrogen sealing component, and a first blower 7. The discharge plate 3 is slidably connected to the connection between the auxiliary coal box 2 and the closed coal box 1, and the nitrogen sealing component is fixedly arranged on the discharge plate 3. When the discharge plate 3 opens the coal supply channel between the auxiliary coal box 2 and the closed coal box 1, the nitrogen sealing component connected to the external nitrogen source starts to work, releases nitrogen to the connection between the auxiliary coal box 2 and the closed coal box 1, and isolates the raw coal gas on the top of the closed coal box 1 in the closed coal box 1, and prevents smoke and / or raw coal gas from escaping to the auxiliary coal box 2 and then being discharged into the atmosphere, thereby ensuring the cleanliness of the environment. In addition, the continuous operation of the nitrogen sealing component reduces the air entering the blue charcoal furnace during the coal supply operation, reducing the oxygen content in the coal gas. When the nitrogen sealing component is continuously working, the continuous coal replenishing operation will confine the flue gas and / or raw coal gas to the corners of the closed coal box 1 (that is, the four corners at the top of the closed coal box 1). The output end of the first fan 7 extends into the interior of the closed coal box 1 and reaches its corners, so as to extract the flue gas and / or raw coal gas from the interior of the closed coal box 1, which can not only ensure the stable release of the raw coal gas and reduce the lower explosion limit of the raw coal gas, but also ensure the stable operation of the equipment and the personal safety of the staff.

[0032] The lignite furnace top exhaust gas treatment device in the present application also includes a second fan 8; the second fan 8 is arranged at the top of the closed coal box 1 and is spaced apart from the first fan 7, and the working end of the second fan 8 extends into the interior of the auxiliary coal box 2 and is arranged above the connection between the auxiliary coal box 2 and the closed coal box 1.

[0033] In the above scheme, it should be noted that when the nitrogen sealing assembly is working, a small amount of flue gas and / or raw coal gas will still escape into the auxiliary coal box 2 and be discharged into the atmosphere. The working end of the second motor extends into the interior of the auxiliary coal box 2, and is located above the connection between the auxiliary coal box 2 and the closed coal box 1, so that the flue gas and raw coal gas escaping into the interior of the auxiliary coal box 2 can be collected for a second time, further improving the safety factor of the semi-coal furnace.

[0034] The nitrogen sealing assembly includes a nitrogen pipeline 4, a solenoid valve 5, and a nozzle 6; the nitrogen pipeline 4 is fixedly arranged inside the unloading plate 3, and the axial length direction of the nitrogen pipeline 4 is consistent with the displacement direction of the unloading plate 3; the solenoid valve 5 is fixedly arranged on the top end surface of the side of the unloading plate 3 away from the auxiliary coal box 2, and the output end of the solenoid valve 5 is connected with the input end of the nitrogen pipeline 4; the nozzle 6 is fixedly arranged at the output end of the nitrogen pipeline 4, and the output end end face of the nozzle 6 is flush with the end face of the side of the unloading plate 3 close to the auxiliary coal box 2.

[0035] The nitrogen sealing assembly in the present application is composed of a nitrogen pipeline 4, a solenoid valve 5, and a nozzle 6. Among them, the nitrogen pipeline 4 is used to communicate with an external nitrogen source, and the nitrogen pipeline 4 is fixedly constrained inside the discharge plate 3 to prevent the bottom end face of the auxiliary coal box 2 and the top end face of the closed coal box 1 from scratching the surface of the nitrogen channel when the discharge plate 3 is opened or closed. The solenoid valve 5 is electrically connected to the external control system. When the discharge plate 3 opens the connection between the auxiliary coal box 2 and the closed coal box 1 for coal replenishment, the solenoid valve 5 is in an open state; when the coal replenishment operation is completed and the discharge plate 3 closes the connection between the auxiliary coal box 2 and the closed coal box 1 for coal replenishment, the solenoid valve 5 is still in an open state until the discharge plate 3 is completely closed, and then the solenoid valve 5 is closed. The opening and closing state of the solenoid valve 5 is interlocked with the switch state of the discharge plate 3, which effectively reduces the lower explosion limit of the raw coal gas, so as to improve the safety factor of the semi-coal furnace involved in the present application when producing coal. In addition, the setting of the nozzle 6 can restrict the nitrogen to the closed path of the connection between the auxiliary coal box 2 and the closed coal box 1, and its end face is flush with the end face of the unloading plate 3, which can avoid the interference of the end face of the nozzle 6 with the inner wall surface of the connection between the auxiliary coal box 2 and the closed coal box 1, so as to ensure that the unloading plate 3 can stably isolate the auxiliary coal box 2 and the closed coal box 1.

[0036] The nozzle 6 as a whole is in a trumpet-shaped structure with one end being large and the other end being small, and the large-diameter end of the nozzle 6 faces the connecting point between the auxiliary coal box 2 and the closed coal box 1 .

[0037] The nozzle 6 in the present application is designed to be trumpet-shaped. The purpose of this arrangement is, on the one hand, to diffuse the airflow from linear to fan-shaped, ensuring that the nitrogen can completely fill the connecting port where the auxiliary coal box 2 and the closed coal box 1 are connected; on the other hand, the nitrogen is input from the small-diameter end of the nozzle 6 to its large-diameter end, so that the nitrogen pressure constrained at the small-diameter end is greater than the nitrogen pressure at the large-diameter end, and a stable delivery power can be obtained when the nitrogen is released.

[0038] The semi-coke furnace top waste gas treatment device in the present application also includes a mounting plate 11 and a telescopic cylinder 12; the mounting plate 11 is horizontally fixedly arranged on a side surface of the closed coal box 1 close to the unloading plate 3, and the mounting plate 11 is located below the unloading plate 3; the input end of the telescopic cylinder 12 is hinged to the top surface of the mounting plate 11, and the output end of the telescopic cylinder 12 is fixedly connected to the bottom of the unloading plate 3, which can drive the unloading plate 3 to move horizontally between the auxiliary coal box 2 and the closed coal box 1.

[0039] In the above scheme, the mounting plate 11 is used to install and fix the telescopic cylinder 12, and the telescopic cylinder 12 is fixedly connected to the bottom of the unloading plate 3. In the present application, the mounting plate 11 can be threadedly connected to the closed coal box 1 to facilitate the installation and removal of the unloading plate 3; the mounting plate 11 can also be an integrated joint with the closed coal box 1, which improves the structural strength of the closed coal box 1 while ensuring the stable connection between the unloading plate 3 and the distribution coal box and the auxiliary coal box 2.

[0040] To facilitate the staff to add coal to the lignite furnace, a coal inlet 9 is opened on the top of the auxiliary coal box 2, and a coal inlet pipe 10 is vertically arranged at the edge of the coal inlet 9. One end of the coal inlet pipe 10 is fixedly connected to the top of the auxiliary coal box 2, and the other end thereof is connected to the output end of the external coal delivery device.

[0041] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. A blue charcoal furnace top exhaust gas treatment device, characterized in that: It comprises a discharge plate (3), a nitrogen sealing component, and a first fan (7); The auxiliary coal box (2) is connected to the top of the vertical closed coal box (1); The discharge plate (3) is arranged at the connection point between the auxiliary coal box (2) and the closed coal box (1), the upper plate surface of the discharge plate (3) is slidably connected to the bottom end surface of the auxiliary coal box (2), and the lower plate surface of the discharge plate (3) is slidably connected to the top end surface of the closed coal box (1); The nitrogen sealing component is fixedly arranged on the discharge plate (3), and the working end of the nitrogen sealing component is arranged at one end of the discharge plate (3) close to the connection between the auxiliary coal box (2) and the closed coal box (1), so as to restrict the gas escape path; The first fan (7) is fixedly arranged on the top end surface of the closed coal box (1), and the working end of the first fan (7) extends into the inner corner of the closed coal box (1).

2. The blue charcoal furnace top exhaust gas treatment device according to claim 1, characterized in that: It also includes a second fan (8); the second fan (8) is arranged on the top of the closed coal box (1) and is spaced apart from the first fan (7); the working end of the second fan (8) extends into the interior of the auxiliary coal box (2) and is arranged above the connection between the auxiliary coal box (2) and the closed coal box (1).

3. The blue charcoal furnace top exhaust gas treatment device according to claim 1, characterized in that: The nitrogen sealing assembly comprises a nitrogen pipeline (4), a solenoid valve (5), and a nozzle (6); The nitrogen pipeline (4) is fixedly arranged inside the discharge plate (3), and the axial length direction of the nitrogen pipeline (4) is consistent with the displacement direction of the discharge plate (3); The solenoid valve (5) is fixedly arranged on the top end surface of the discharge plate (3) away from the auxiliary coal box (2), and the output end of the solenoid valve (5) is connected to the input end of the nitrogen pipeline (4); The nozzle (6) is fixedly arranged at the output end of the nitrogen pipeline (4), and the end face of the output end of the nozzle (6) is flush with the end face of one side of the discharge plate (3) close to the auxiliary coal box (2).

4. The blue charcoal furnace top exhaust gas treatment device according to claim 3 is characterized in that: The nozzle (6) is in the shape of a trumpet with one end being large and the other end being small, and the large diameter end of the nozzle (6) faces the connection point between the auxiliary coal box (2) and the closed coal box (1).

5. The blue charcoal furnace top exhaust gas treatment device according to claim 1, characterized in that: It also includes a mounting plate (11) and a telescopic cylinder (12); The mounting plate (11) is horizontally fixedly arranged on a side surface of the closed coal box (1) close to the discharge plate (3), and the mounting plate (11) is located below the discharge plate (3); The input end of the telescopic cylinder (12) is hinged to the top surface of the mounting plate (11), and the output end of the telescopic cylinder (12) is fixedly connected to the bottom of the discharge plate (3), so as to drive the discharge plate (3) to move horizontally between the auxiliary coal box (2) and the closed coal box (1).

6. The blue charcoal furnace top exhaust gas treatment device according to claim 1, characterized in that: A coal inlet (9) is provided at the top of the auxiliary coal box (2), and a coal inlet pipe (10) is vertically provided at the edge of the coal inlet (9). One end of the coal inlet pipe (10) is fixedly connected to the top of the auxiliary coal box (2), and the other end is connected to the output end of an external coal delivery device.

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