A tail gas recovery apparatus for silicon carbide smelting

Abstract

The application relates to the technical field of tail gas treatment, and discloses a tail gas recovery equipment for silicon carbide smelting, which comprises an equipment main body, the inside of which is divided into three functional cabins, namely a neutralization cabin on the left side, a leaching cabin in the middle and a drying cabin on the right side; an adjusting insert penetrating through the neutralization cabin, the leaching cabin and the drying cabin is arranged at the bottom of the equipment main body, the two ends of the adjusting insert adopt a three-pronged partition strip structure, a bidirectional transmission mechanism is connected between the two ends, a power conversion mechanism is assembled between the lower portion of the bidirectional transmission mechanism and an annular channel; two sets of auxiliary systems are arranged in the leaching cabin, an air inlet transmission group is arranged close to the neutralization reactor side, and a waste discharge linkage group is arranged at the bottom and the left and right sides; the adjusting insert realizes double-mode switching through horizontal movement; the linkage design realizes seamless switching of the functional modes through the adjusting insert of a single driving source, efficient purification during gas treatment is ensured, precise control of waste liquid discharge is realized, and energy consumption and maintenance cost are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tail gas treatment, more particularly to a tail gas recovery equipment for silicon carbide smelting. BACKGROUND

[0002] In the process of silicon carbide industrial smelting, a large amount of waste gas containing harmful components such as CO, SO2, NO and dust will be generated; in order to meet the environmental protection requirements, the waste gas usually needs to be treated by a tail gas recovery equipment, for example, the patent with publication number CN216654024U discloses a tail gas recovery equipment for silicon carbide smelting, which comprises a reaction chamber, a treatment box and a purifier, wherein a detector is arranged on the right side of the treatment box, the detection head of the detector extends into the inside of the exhaust pipe, and is used for monitoring the purity of the tail gas; a circulating pipe is connected to the lower side of the exhaust pipe, when the detector detects that the purity of the tail gas does not meet the standard, the gas flows back to the treatment box through the circulating pipe and reacts with the spraying liquid again to improve the reaction completeness until the purity of the tail gas reaches the set standard.

[0003] However, the prior art still has the following defects:

[0004] Low contact efficiency of gas and spraying liquid: the tail gas enters the treatment box in a free diffusion manner, and the contact area with the spraying liquid is small, resulting in low reaction rate and poor purification effect;

[0005] Low utilization rate of spraying liquid: due to uneven gas diffusion, part of the spraying liquid does not fully participate in the reaction, causing resource waste, which does not meet the requirements of green environmental protection and sustainable development.

[0006] Therefore, there is an urgent need for an improved tail gas recovery equipment for silicon carbide smelting to improve the gas-liquid reaction efficiency, reduce the waste of spraying liquid, and improve the tail gas purification effect. SUMMARY

[0007] In order to overcome the above-mentioned defects of the prior art, the present application provides a tail gas recovery equipment for silicon carbide smelting to solve the problems of low contact efficiency of gas and spraying liquid and low utilization rate of spraying liquid in the background art.

[0008] The application provides the following technical scheme: a tail gas recovery equipment for silicon carbide smelting, comprising an equipment main body, a sealing side plate is installed on the front and rear side walls of the equipment main body, and the inside of the equipment main body is divided into three functional cabins: the left side is a neutralization cabin, the middle part is a leaching cabin, and the right side is a drying cabin; a neutralization reactor is arranged in the neutralization cabin, and a drying device is arranged in the drying cabin; a liquid storage cabin is arranged on the upper layer of the leaching cabin, and a spraying assembly extending into the leaching cabin is arranged; a transportation interlayer is arranged between the equipment main body and the sealing side plate, and the transportation interlayer is connected to the bottom of the leaching cabin and the top of the liquid storage cabin respectively, so as to form an annular channel, and a liquid circulation conveying assembly is arranged in the annular channel; an adjusting plug-in part penetrating through the neutralization cabin, the leaching cabin and the drying cabin is arranged at the bottom of the equipment main body, the two ends of the adjusting plug-in part are provided with a three-pronged partition strip structure, and a bidirectional transmission mechanism is connected between the two ends, and a power conversion mechanism is arranged between the lower part of the bidirectional transmission mechanism and the annular channel; two sets of auxiliary systems are arranged in the leaching cabin: an air inlet transmission group is arranged near the neutralization reactor, and exhaust discharge linkage groups are arranged on the left and right sides of the bottom of the leaching cabin.

[0009] The bidirectional transmission mechanism comprises a central shaft, a sliding coupling, a power input gear and a positioning support: the central shaft is coaxially arranged with the power input gear which is driven by the power conversion mechanism, positioning supports are symmetrically arranged on both sides of the power input gear, and the front and rear ends of the positioning supports are fixed to the inner wall of the leaching cabin; the central shaft vertically penetrates through the positioning supports and is rotationally connected to the positioning supports through bearings, and the left and right ends of the central shaft are respectively slidably connected with the sliding couplings, and the sliding couplings are connected with the adjusting plug-in part.

[0010] Further, the air inlet transmission group comprises a lower transmission wheel, a cruising transmission wheel, a synchronous belt, a wind wheel and a mounting base, the mounting base is fixedly installed on the side wall of the leaching cabin, the lower transmission wheel and the cruising transmission wheel are rotationally connected to the upper and lower ends of the mounting base through bearings and are drivingly connected through the synchronous belt, the cruising transmission wheel and the wind wheel are coaxially installed, and the positioning support is arranged at the air inlet position of the leaching cabin.

[0011] Further, the exhaust discharge linkage group comprises an oblique transmission wheel, a push rod, a sealing plug and a second spring, the oblique transmission wheel is installed in the leaching cabin and is rotationally connected to the inner side wall of the cabin body at the shaft end, the oblique transmission wheel is located at the rightmost position of the moving stroke of the sliding coupling and is provided with an inclined surface on the outer side, the push rod penetrates through the side wall of the leaching cabin in a movable manner and is in contact with the inclined surface, the bottom of the sealing plug is blocked at the exhaust port of the leaching cabin in a sealing plug-in manner, and the sealing plug is elastically connected to the outer wall of the equipment main body through the second spring.

[0012] Further, the lower transmission wheel has a structure of a middle part with a groove and a circumferential integrally formed convex edge, the left and right end faces of the convex edge are treated by arc chamfering, and the circumferential of the oblique transmission wheel is also integrally formed with a convex edge, and the end face of the convex edge is treated by arc chamfering.

[0013] Further, the sliding coupling is composed of a guide sleeve, an elastic engagement head and a first spring; the inner wall of the guide sleeve is provided with an integrally formed guide rib, the guide rib and the slide rail on the surface of the central rotating shaft form an embedded cooperation, the guide sleeve adopts an integrally formed structure of a large pipe body and a small pipe body, the large pipe body is provided with a receiving cavity in the circumferential direction, the elastic engagement head is telescopically arranged in the receiving cavity through the first spring, the elastic engagement head adopts a hollow structure, and the left and right end faces are treated by arc chamfering.

[0014] Further, the neutralization reactor is composed of a double-cavity shell, a guide plate, a gas guide communication pipe and a gas source interface; the double-cavity shell is used as the core structure of the neutralization cabin, the inside of the double-cavity shell is provided with a reaction cavity in the center, and the front and rear sides are symmetrically arranged to form a double-channel layout; a plurality of staggered and stacked guide plates are vertically arranged in the reaction cavity, the guide plates are designed to be upwardly inclined in the middle, and the tail ends are provided with a specific elevation angle; the gas guide cavities are communicated through the gas guide communication pipes between the adjacent guide plates on the same side, and a gas diffusion network is formed; the gas guide cavities and the bottom of the reaction cavity are respectively provided with corresponding openings, the openings are connected with external gas sources through the gas source interfaces, the gas source interface corresponding to the gas guide cavity is communicated with a reaction gas source, and the gas source interface corresponding to the reaction cavity is communicated with a tail gas source.

[0015] Further, the drying cabin is provided with a drying device, the bottom of the drying device is provided with an opening, the gas path control openings respectively communicating with the gas guide cavities and the reaction cavity are arranged on the three-pronged partition strips of the neutralization cabin when the adjusting plug is inserted into the three-pronged partition strips, and the gas path control openings communicating with the drying device are arranged on the three-pronged partition strips of the drying cabin.

[0016] Further, the gas path control openings for opening and closing the gas guide cavities are longer than the gas path control openings of the reaction cavity in the length design, the adjusting plug is connected with a push-pull device assembled outside the equipment body, the push-pull device can be selected as a telescopic cylinder structure, and the positioning support is provided with guide grooves for the adjusting plug to penetrate through at the front and rear ends.

[0017] Further, the liquid circulating and conveying assembly is arranged in the annular channel formed by the equipment body and the sealing side plate, the liquid circulating and conveying assembly is composed of a track side plate, a transfer chain and a transfer hopper, the track side plates are symmetrically arranged on the left and right sides of the annular channel, the transfer chains are slidingly assembled in each track side plate, a plurality of transfer hoppers are uniformly arranged along the movement track between the two transfer chains, and the two ends of the transfer hopper are mounted on the side walls of the transfer chains.

[0018] Further, the power conversion mechanism is composed of a transmission main shaft, a driven gear and a driving gear, the transmission main shaft is coaxially provided with the driven gear at both ends, the driven gear is engaged with the transfer chain, the track side plate is provided with a guide slot for the movement of the driven gear in the middle, and the driving gear is mounted on the surface of the transmission main shaft in the middle.

[0019] 1. The present application is characterized in that the three-pronged spacer linkage mechanism adjusting insert is provided with an adjusting insert, which is beneficial to the design of the three-pronged spacer linkage mechanism adjusting insert and its gas path control port, and can synchronously control the gas path switching and the opening and closing of the exhaust port through a single push-pull action, thereby ensuring the accurate guidance of the reaction gas and tail gas, effectively preventing the leakage of uncleaned gas, and significantly improving the system sealing performance and operation reliability.

[0020] 2. The present application is characterized in that the adjusting insert is provided with a bidirectional transmission mechanism, an air inlet transmission group and a waste discharge linkage group, which are beneficial to the realization of double-mode switching of the adjusting insert through horizontal movement: when moving to the left, the two ends of the three-pronged spacer drive the sliding coupling to slide along the center shaft and self-rotate, the sliding coupling and the lower transmission wheel form a transmission, and the wind wheel is driven to rotate and generate turbulence, thereby significantly improving the gas-liquid contact area and impurity removal efficiency; when moving to the right, the sliding coupling is separated from the lower transmission wheel and is transferred to the side of the bevel transmission wheel, the intermittent swing of the push rod is driven through the bevel transmission, and the periodic opening and closing of the sealing plug is realized, thereby forming a slow-release discharge mechanism of the elution liquid; the linkage design realizes seamless switching of the function mode of the adjusting insert through a single driving source, thereby ensuring efficient purification during gas treatment, realizing accurate control of waste liquid discharge, and reducing energy consumption and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0022] Figure 2 It is a schematic diagram of the overall structure of the present application. Figure 1 It is a schematic diagram of the structure after removing the sealing side plate and the top cover in the present application.

[0023] Figure 3 It is a schematic diagram of the structure and its local section in the present application. Figure 2

[0024] Figure 4 It is a further disassembly schematic diagram of the structure in the present application. Figure 3

[0025] Figure 5 It is a schematic diagram of the structure at A in the present application. Figure 4

[0026] Figure 6 It is a schematic diagram of the liquid circulation and delivery assembly and the power conversion mechanism transmission structure of the present application.

[0027] Figure 7 It is a schematic diagram of the structure and its local section in the present application. Figure 3

[0028] Figure 8 It is a schematic diagram of the structure at B in the present application. Figure 7

[0029] Figure 9 ​​​​​The schematic diagram of the bidirectional transmission mechanism and the partial sectional structure thereof.

[0030] Figure 10 The schematic diagram of the bidirectional transmission mechanism and the partial sectional structure thereof. Figure 9 The schematic diagram of the structure at C.

[0031] The figure marks are as follows: 1, equipment main body; 2, sealing side plate; 3, top cover; 4, adjusting insert; 401, air path control port; 5, liquid circulation conveying assembly; 501, track side plate; 502, transfer chain; 503, transfer hopper; 6, spraying assembly; 601, grid conveying pipe; 602, atomizing nozzle; 603, backflow pump; 7, neutralization reactor; 701, double-cavity shell; 702, flow guide plate; 703, gas guide communication pipe; 704, gas source interface; 8, drying device; 9, power conversion mechanism; 901, transmission main shaft; 902, driven gear; 903, driving gear; 10, bidirectional transmission mechanism; 1001, center rotating shaft; 1002, sliding coupling; 10021, guide sleeve; 10022, elastic engagement head; 10023, first spring; 1003, power input gear; 1004, positioning support; 11, air inlet transmission group; 1101, lower transmission wheel; 1102, cruise transmission wheel; 1103, synchronous belt; 1104, wind wheel; 1105, mounting base; 12, waste discharge linkage group; 1201, bevel transmission wheel; 1202, push rod; 1203, sealing plug; 1204, second spring. DETAILED DESCRIPTION

[0032] The technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application, and additionally, the forms of each structure described in the following embodiments are only examples, and the silicon carbide smelting tail gas recovery equipment involved in the present application is not limited to each structure described in the following embodiments, and all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0033] Referring to Figures 1-10This invention provides a tail gas recovery device for silicon carbide smelting, comprising a main body 1, with sealing side plates 2 installed on its front and rear side walls, and the interior divided into three functional compartments: a neutralization compartment on the left, a scrubbing compartment in the middle, and a drying compartment on the right; a neutralization reactor 7 is installed in the neutralization compartment, and a drying device 8 is installed in the drying compartment; a liquid storage compartment is set on the upper layer of the scrubbing compartment and a spray assembly 6 extending to the scrubbing compartment is installed; a transport interlayer is provided between the main body 1 and the sealing side plates 2, which connects the bottom of the scrubbing compartment and the top of the liquid storage compartment respectively, forming an annular channel, and a liquid circulation transport assembly 5 is configured in the annular channel; an adjustment plug 4 is set at the bottom of the main body 1, penetrating the neutralization compartment, the scrubbing compartment and the drying compartment, with a three-pronged spacer structure at both ends and a bidirectional transmission mechanism 10 connected between the two; a power conversion mechanism 9 is installed below the bidirectional transmission mechanism 10 and between it and the annular channel; two auxiliary systems are set in the scrubbing compartment: an air intake transmission group 11 is installed near the neutralization reactor 7, and a waste discharge linkage group 12 is configured on the left and right sides of the bottom.

[0034] In this embodiment, it should be specifically explained that the neutralization reactor 7 is composed of a dual-chamber shell 701, a guide plate 702, a gas guiding pipe 703, and a gas source interface 704. The dual-chamber shell 701 is the core structure of the neutralization chamber, with a reaction chamber in the center and gas guiding chambers symmetrically arranged on the front and rear sides to form a dual-channel layout. Multiple staggered and stacked guide plates 702 are arranged vertically inside the reaction chamber. The guide plates 702 are designed to be tilted upward in the middle and have a specific elevation angle at the end to ensure that the airflow generates an upward ripple effect when it is discharged along the surface of the guide plate 702. Adjacent guide plates 702 on the same side are connected to the gas guiding chambers through the gas guiding pipe 703 to form a gas diffusion network. The bottom of the gas guiding chamber and the reaction chamber are respectively provided with corresponding openings. These openings are connected to an external gas source through the gas source interface 704. The gas source interface 704 corresponding to the gas guiding chamber is connected to the reaction gas source, and the gas source interface 704 corresponding to the reaction chamber is connected to the exhaust source.

[0035] The drying chamber is equipped with a drying device 8, which can be configured with an electric heater or a dehumidifier. The bottom of the drying device 8 is provided with an opening that is aligned with the air source interface 704 on the bottom wall of the drying chamber to form a vertical through structure, so that the humid gas that has been rinsed and purified can be deeply dried through the drying device 8, and finally output dried and purified gas that meets the emission standards.

[0036] The regulating plug 4 is inserted into the neutralization chamber and has a three-pronged partition bar with a gas path control port 401 that can connect to the gas guide chamber and the reaction chamber respectively. The three-pronged partition bar inserted into the drying chamber is also equipped with a gas path control port 401 that can connect to the drying device 8. The opening and closing status of the gas source interface 704 can be precisely controlled by adjusting the horizontal displacement of the regulating plug 4, so as to realize the dual functions of gas path switching and isolation at the same time. Among them, the gas path control port 401 used for opening and closing the gas guide chamber is longer than the gas path control port 401 of the reaction chamber, ensuring priority supply of reaction gas, creating prerequisites for neutralization reaction, and cutting off the tail gas supply first at the end of the working cycle, thereby realizing precise gas path management with time controllability.

[0037] The adjusting plug 4 can be connected to the push-pull device externally mounted on the main body 1 of the equipment. The push-pull device can be a telescopic cylinder structure (including but not limited to hydraulic cylinder, pneumatic cylinder or electric push rod and other reciprocating movement mechanism) to provide stable power output for the horizontal reciprocating motion of the adjusting plug 4.

[0038] The spray assembly 6 consists of a grid conveying pipe 601, atomizing nozzles 602 and a return pump 603. The grid conveying pipe 601 is installed inside the liquid storage tank, and its outlet is connected to the atomizing nozzles 602 that are distributed in a matrix on the bottom wall of the liquid storage tank. The return pump 603 is also installed inside the liquid storage tank. Its drain end is connected to the grid conveying pipe 601, and its pumping end extends to the bottom area of ​​the liquid storage tank, forming a complete liquid circulation path.

[0039] The top of the liquid storage tank is equipped with a detachable top cover 3. This component not only forms a protective barrier for the inside of the liquid storage tank, but also has a water inlet on its top wall to facilitate rapid replenishment when the liquid level in the liquid storage tank is insufficient.

[0040] In this article, all our discussions of positional relationships, including front-back, left-right, and right-side relationships, are based on... Figures 1-4 Defined from the perspective presented, these directional descriptions do not have actual geographical or physical meaning. They are merely a reference framework set up to help readers understand the content of the text more intuitively. In this way, we can more clearly show the relative positional relationship between the various parts, making the entire argument process easier to understand and follow. Please note that these custom directional markers are only for use within this article and do not represent any absolute direction or position in the real world.

[0041] Reference Figures 4-10The annular channel formed by the device body 1 and the sealing side plate 2 is provided with a liquid circulating conveying assembly 5, which is composed of a track side plate 501, a transfer chain 502 and a transfer hopper 503. The track side plate 501 is symmetrically arranged on the left and right sides of the annular channel, and the transfer chain 502 is slidingly assembled in each track side plate 501. A plurality of transfer hoppers 503 are uniformly arranged along the movement track between the two transfer chains 502, and the two ends of the transfer hopper 503 are installed on the side wall of the transfer chain 502. When the transfer hopper 503 runs to the horizontal station, the transfer hopper 503 located above the liquid storage cabin is in a downward inclined posture, and the transfer hopper 503 located at the bottom of the leaching cabin is in an upward inclined posture. Or at least ensure that the transfer hopper 503 maintains a horizontal state when it reaches above the liquid storage cabin or at the bottom of the leaching cabin. This design enables the transfer hopper 503 to effectively receive the spraying liquid at the bottom of the leaching cabin, which is finally unloaded back to the liquid storage cabin after circulating transportation to complete the circulation process.

[0042] The power conversion mechanism 9 is composed of a transmission main shaft 901, a driven gear 902 and a driving gear 903. The transmission main shaft 901 is coaxially assembled with the driven gear 902 at both ends, and the driven gear 902 and the transfer chain 502 realize power transmission through the meshing surface. The track side plate 501 is provided with a guide slot for the movement of the driven gear 902, and the driving gear 903 is installed on the surface of the transmission main shaft 901 in the middle, which can also be used as a transmission mechanism for driving the bidirectional transmission mechanism 10. The driven gear 902 penetrates the side wall of the leaching cabin, and the outer end thereof is connected with the driving device for power transmission. The driving device preferably adopts a servo motor or other power mechanism that can accurately control the torque output.

[0043] The bidirectional transmission mechanism 10 is composed of a center shaft 1001, a sliding coupling 1002, a power input gear 1003 and a positioning support 1004. The center shaft 1001 is coaxially installed with the power input gear 1003 connected with the power conversion mechanism 9, specifically the power input gear 1003 is engaged with the driving gear 903 for power transmission. The positioning supports 1004 are symmetrically arranged on both sides of the power input gear 1003, and the front and rear ends thereof are fixed to the inner wall of the leaching cabin. The center shaft 1001 penetrates the positioning support 1004 vertically and is rotatably connected thereto through a bearing, and the left and right ends thereof are slidingly assembled with the sliding couplings 1002, which are connected with the adjusting insert 4 to form a linkage.

[0044] The air intake transmission set 11 is composed of a lower transmission wheel 1101, a cruise transmission wheel 1102, a synchronous belt 1103, a wind wheel 1104 and a mounting base 1105. The mounting base 1105 is fixedly installed on the side wall of the elution chamber. The lower transmission wheel 1101 and the cruise transmission wheel 1102 are rotatably connected to the upper and lower ends of the mounting base 1105 respectively and are transmissionally connected through the synchronous belt 1103. The cruise transmission wheel 1102 and the wind wheel 1104 are coaxially installed. The positioning support 1004 is arranged at the air inlet position of the elution chamber.

[0045] The waste discharge linkage set 12 is composed of an oblique transmission wheel 1201, a push rod 1202, a sealing plug 1203 and a second spring 1204. The oblique transmission wheel 1201 is installed inside the elution chamber and has an axle end rotatably connected to the inner side wall of the chamber body. The oblique transmission wheel 1201 is located at the rightmost position of the moving stroke of the sliding coupling 1002 and has an oblique cutting surface arranged outside. The push rod 1202 penetrates the side wall of the elution chamber in a movable manner and is in contact with the oblique cutting surface. The sealing plug 1203 is blocked at the waste discharge port of the elution chamber in a sealing plug-in manner and is elastically connected to the outer wall of the equipment main body 1 through the second spring 1204.

[0046] In the embodiment, it is necessary to be particularly explained that the positioning support 1004 is provided with guide grooves at the front and rear ends for adjusting the penetration of the adjusting insert 4. The positioning support 1004 has the following functions: accurately positioning the spatial position of the central rotating shaft 1001; ensuring the meshing transmission stability of the power input gear 1003 and the driving gear 903; and ensuring that the central rotating shaft 1001 can effectively transmit the torque load borne.

[0047] The sliding coupling 1002 is composed of a guide sleeve 10021, an elastic engagement head 10022 and a first spring 10023. The inner wall of the guide sleeve 10021 is provided with an integrally formed guide rib which is embeddedly matched with the slide rail on the surface of the central rotating shaft 1001 to realize horizontal sliding guidance. The guide sleeve 10021 is integrally formed in a large-small tube structure. The large tube body is provided with a receiving cavity in the circumferential direction. The elastic engagement head 10022 is arranged in the receiving cavity in an extendable and retractable manner through the first spring 10023. Specifically, the lower end of the first spring 10023 is fixed to the bottom groove of the receiving cavity and the upper end is connected to the top of the elastic engagement head 10022. The elastic engagement head 10022 adopts a hollow structure. The left and right end faces are treated by circular arc chamfering to ensure smooth movement. The sliding coupling 1002 can smoothly slide left and right under the traction of the adjusting insert 4. The sliding coupling 1002 has a bidirectional displacement function. When moved to the left limit position, the sliding coupling 1002 forms a lower meshing transmission with the lower transmission wheel 1101. When moved to the right limit position, the sliding coupling 1002 establishes a lateral transmission connection with the oblique transmission wheel 1201, thereby realizing the double-station mode switching of the mechanism between the lower transmission wheel 1101 and the oblique transmission wheel 1201.

[0048] The lower transmission wheel 1101 adopts a structure of a middle part with a wheel groove and a circumferential integrally formed convex ridge edge, wherein the left and right end faces of the convex ridge edge are treated by arc chamfering; when the elastic engagement head 10022 moves horizontally and interferes with the convex ridge edge of the lower transmission wheel 1101, the elastic engagement head 10022 will elastically contract to the inside of the guide sleeve 10021 to avoid interference, and after the interference is removed, the elastic engagement head 10022 automatically resets, at this time, the elastic engagement head 10022 and the lower transmission wheel 1101 form stable transmission cooperation; the circumferential convex ridge edge of the oblique cutting transmission wheel 1201 is integrally formed, and the end face of the convex ridge edge is treated by arc chamfering.

[0049] The working principle of the present application is as follows:

[0050] Firstly, the backflow pump 603 is started, the backflow pump 603 will extract the spraying liquid in the liquid storage cabin, and deliver the spraying liquid to the matrix arranged atomizing nozzle 602 through the grid delivery pipe 601, then the spraying liquid is delivered to the washing cabin by the atomizing nozzle 602 for washing gas; at the same time, the driving device is started, the torque force output by the driving device is transmitted to the transmission main shaft 901, so that the power conversion mechanism 9 obtains driving force and rotates as a whole, and then drives the transfer chain 502 engaged therewith to move, the transfer chain 502 slidingly clamped in the track side plate 501 can drive the transfer hopper 503 on the inner side to move circularly along the transportation interlayer between the equipment main body 1 and the sealing side plate 2, so that the transfer hopper 503 can enter the spraying liquid accumulated at the bottom of the washing cabin, and then return to the liquid storage cabin along the transportation interlayer to unload the spraying liquid back to the liquid storage cabin, so that the spraying liquid can be reused, thereby improving the utilization rate of the spraying liquid.

[0051] Then, the push-pull device is started, the output end of the push-pull device pushes the adjusting insert 4 to move horizontally to the left until the gas path control ports 401 on the three-pronged partition strips on the left side of the adjusting insert 4 are respectively aligned with the gas guide cavity and the gas source interface 704 at the bottom of the reaction cavity, so as to realize the communication of the gas guide cavity with the reaction gas source and the reaction cavity with the tail gas source; at this time, the reaction gas and the tail gas enter the gas guide cavity and the reaction cavity respectively, the reaction gas in the gas guide cavity enters the reaction cavity through the gas guide communication pipes 703 arranged in the longitudinal direction of the side wall, fully contacts with the tail gas rising in the reaction cavity in a meandering manner, and reacts, after the acid substances in the tail gas are preliminarily removed, the gas flows to the washing cabin in the equipment main body 1 in an orderly manner; during this period, the gas path control ports 401 on the three-pronged partition strips on the right side of the adjusting insert 4 will close the exhaust port at the bottom of the drying device 8, effectively preventing the gas which is not sufficiently purified from being discharged from the system.

[0052] Meanwhile, when the adjusting plug 4 moves to the left, the three-pronged partition at both ends of the adjusting plug 4 drives the sliding coupling 1002 to slide along the surface of the central rotating shaft 1001. Since the driving gear 903 is always in mesh with the power input gear 1003, the bidirectional transmission mechanism 10 is self-rotated while the power conversion mechanism 9 drives the liquid circulation conveying assembly 5 to operate, so that the sliding coupling 1002 rotates synchronously during the sliding process. When the left sliding coupling 1002 approaches the lower transmission wheel 1101, if the convex ridge of the lower transmission wheel 1101 interferes with the elastic engagement head 10022 of the sliding coupling 1002, the elastic engagement head 10022 will elastically contract into the guide sleeve 10021 to avoid the interference. After the elastic engagement head 10022 is elastically reset after the dislocation, the sliding coupling 1002 enters below the lower transmission wheel 1101, and the two form a transmission relationship. At this time, the rotating sliding coupling 1002 drives the lower transmission wheel 1101 to rotate synchronously, and the lower transmission wheel 1101 is connected with the cruise transmission wheel 1102 through the synchronous belt 1103, thereby driving the wind wheel 1104 at the inlet of the spray cabin to rotate, so as to disturb and disperse the entering gas, so that the gas contacts with the spraying liquid in a more dispersed state, thereby increasing the gas-liquid contact area and improving the impurity removal efficiency.

[0053] When the gas detector detects that the gas in the spray cabin meets the purification standard, a gas standard judgment signal is sent to the control system to start the discharge program, and the push-pull device is immediately controlled to operate reversely, the adjusting plug 4 is pulled to move horizontally to the right to dislocate the gas path control port 401 from the connection position, and three key actions are synchronously completed: firstly, the connection channels of the gas guide cavity and the reaction gas source and the reaction cavity and the tail gas source are cut off to achieve gas supply termination, and the drying device 8 is connected to establish an exhaust passage; secondly, the left sliding coupling 1002 orderly exits from the transmission position below the lower transmission wheel 1101, and the two groups of sliding couplings 1002 are displaced to the side of the bevel transmission wheel 1201 and establish a new transmission connection. At this time, the rotating sliding coupling 1002 drives the bevel transmission wheel 1201 with an inclined surface to rotate periodically, and the bevel transmission wheel 1201 changes the angle of the surface to apply a regular variable thrust to the push rod 1202, and the elastic reset action of the second spring 1204 makes the push rod 1202 produce accurate intermittent swing, thereby driving the sealing plug 1203 connected to the outer end of the push rod 1202 to realize the periodic opening and closing of the bottom side wall of the spray cabin, and a controlled slow-release discharge mechanism for the washing liquid after multiple reactions is formed. The design ensures that the washing liquid is safely discharged from the system after reaching the best utilization rate through mechanical linkage.

[0054] The above is only one preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent substitutions or modifications within the technical range disclosed by the present application according to the technical plan of the present application and its improved conception, which should be included in the protection of the present application.

Claims

1. A tail gas recovery device for silicon carbide smelting, comprising a main body (1), with sealing side plates (2) installed on its front and rear side walls, and internally divided into three functional compartments: a neutralization compartment on the left, a scrubbing compartment in the middle, and a drying compartment on the right; a neutralization reactor (7) is installed in the neutralization compartment, and a drying device (8) is installed in the drying compartment; a liquid storage compartment is provided on the upper layer of the scrubbing compartment and a spray assembly (6) extending to the scrubbing compartment is installed thereon, characterized in that: There is a transport interlayer between the main body (1) and the sealing side plate (2), which connects the bottom of the rinsing tank and the top of the liquid storage tank respectively, forming an annular channel. A liquid circulation conveying assembly (5) is configured in the annular channel. An adjustment plug (4) is set at the bottom of the main body (1) that runs through the neutralization tank, the rinsing tank and the drying tank. The two ends of the plug adopt a three-pronged spacer structure and are connected by a bidirectional transmission mechanism (10). A power conversion mechanism (9) is installed between the bidirectional transmission mechanism (10) and the annular channel. Two auxiliary systems are set in the rinsing tank: an air intake transmission group (11) is installed near the neutralization reactor (7), and a waste discharge linkage group (12) is configured on the left and right sides of the bottom. The bidirectional transmission mechanism (10) consists of a central rotating shaft (1001), a sliding coupling (1002), a power input gear (1003), and a positioning bracket (1004). The central rotating shaft (1001) is coaxially mounted with a power input gear (1003) that drives the power conversion mechanism (9). Positioning brackets (1004) are symmetrically arranged on both sides of the power input gear (1003), and their front and rear ends are fixed to the inner wall of the shower chamber. The central rotating shaft (1001) vertically passes through the positioning bracket (1004) and is rotatably connected to it through a bearing. Sliding couplings (1002) are slidably mounted on its left and right ends respectively. The sliding couplings (1002) are connected to the adjusting plug (4). The air intake transmission assembly (11) consists of a lower transmission wheel (1101), a cruise transmission wheel (1102), a synchronous belt (1103), a wind turbine (1104), and a mounting base (1105). The mounting base (1105) is fixedly installed on the side wall of the shower chamber. The lower transmission wheel (1101) and the cruise transmission wheel (1102) are rotatably connected to the upper and lower ends of the mounting base (1105) through bearings and are connected by synchronous belt (1103). The cruise transmission wheel (1102) and the wind turbine (1104) are coaxially installed. The wind turbine (1104) is located at the air inlet of the shower chamber. The waste discharge linkage group (12) consists of a slanted transmission wheel (1201), a push rod (1202), a sealing plug (1203), and a second spring (1204). The slanted transmission wheel (1201) is installed inside the shower chamber and its shaft end is rotatably connected to the inner side wall of the chamber. The slanted transmission wheel (1201) is located at the rightmost end of the travel of the sliding coupling (1002) and has an inclined cut surface on its outer side. The push rod (1202) passes through the side wall of the shower chamber in a movable manner and forms a contact fit with the inclined cut surface. The bottom of the sealing plug (1203) is blocked at the waste discharge port of the shower chamber by a sealing plug-in method and is elastically connected to the outer wall of the equipment body (1) through the second spring (1204). The regulating plug (4) is inserted into the neutralization chamber and has a gas path control port (401) that connects the gas guide chamber and the reaction chamber respectively. The three-pronged spacer inserted into the drying chamber is provided with a gas path control port (401) that connects to the drying device (8). The adjustment plug (4) can be connected to the push-pull device assembled on the outside of the main body (1) of the equipment.

2. The tail gas recovery equipment for silicon carbide smelting according to claim 1, characterized in that: The lower drive wheel (1101) adopts a structure with a central pulley groove and an integrally formed circumferential convex edge, wherein the left and right end faces of the convex edge are treated with rounded chamfers. The oblique drive wheel (1201) also has an integrally formed convex edge in the circumference, wherein the end faces of the convex edge are treated with rounded chamfers.

3. The tail gas recovery equipment for silicon carbide smelting according to claim 1, characterized in that: The sliding coupling (1002) is composed of a guide sleeve (10021), an elastic engagement head (10022), and a first spring (10023). The guide sleeve (10021) has an integrally formed guide ridge on its inner wall. The guide ridge and the slide rail on the surface of the central rotating shaft (1001) form an embedded fit. The guide sleeve (10021) adopts an integrally formed structure of large and small tubes. The large tube has a circumferential cavity. The elastic engagement head (10022) is telescopically installed in the cavity through the first spring (10023). The elastic engagement head (10022) adopts a hollow structure, and its left and right end faces are rounded and chamfered.

4. The tail gas recovery equipment for silicon carbide smelting according to claim 1, characterized in that: The neutralization reactor (7) consists of a double-chamber shell (701), a baffle plate (702), a gas-guiding connecting pipe (703), and a gas source interface (704). The double-chamber shell (701) serves as the core structure of the neutralization chamber. Its interior center is the reaction chamber, and the front and rear sides are symmetrically arranged with gas-guiding chambers to form a dual-channel layout. Multiple staggered guide plates (702) are vertically arranged inside the reaction chamber. The guide plates (702) are designed to be tilted upward in the middle and have a specific elevation angle at the end. Adjacent guide plates (702) on the same side are connected to the gas guide chamber through a gas guide connecting pipe (703) to form a gas diffusion network. The bottom of the gas guide chamber and the reaction chamber are respectively provided with corresponding openings. The openings are connected to an external gas source through a gas source interface (704). The gas source interface (704) corresponding to the gas guide chamber is connected to the reaction gas source, and the gas source interface (704) corresponding to the reaction chamber is connected to the exhaust source.

5. The tail gas recovery equipment for silicon carbide smelting according to claim 1, characterized in that: A drying device (8) is installed inside the drying chamber, and an opening for alignment is provided at the bottom of the drying device (8).

6. The tail gas recovery equipment for silicon carbide smelting according to claim 4, characterized in that: The gas path control port (401) for opening and closing the gas guide chamber is longer than the gas path control port (401) of the reaction chamber. The push-pull device adopts a telescopic cylinder structure. The positioning bracket (1004) has guide grooves at both ends for adjusting the plug (4) to pass through.

7. The tail gas recovery equipment for silicon carbide smelting according to claim 1, characterized in that: The main body of the equipment (1) and the sealing side plate (2) form an annular channel in which a liquid circulation conveying assembly (5) is provided. The liquid circulation conveying assembly (5) consists of a track side plate (501), a transfer chain (502) and a transfer hopper (503). The track side plates (501) are symmetrically arranged on the left and right sides of the annular channel. Each track side plate (501) is slidably fitted with a transfer chain (502). Multiple transfer hoppers (503) are evenly arranged between two transfer chains (502) along the movement trajectory. The two ends of the transfer hoppers (503) are installed on the side wall of the transfer chain (502).

8. The tail gas recovery equipment for silicon carbide smelting according to claim 7, characterized in that: The power conversion mechanism (9) consists of a transmission main shaft (901), a driven gear (902), and a drive gear (903). The driven gear (902) is coaxially mounted at both ends of the transmission main shaft (901), and the driven gear (902) meshes with the transfer chain (502). The middle part of the track side plate (501) is provided with a guide slot for the driven gear (902) to move, and the drive gear (903) is installed in the middle of the surface of the transmission main shaft (901). The driven gear (902) penetrates the side wall of the shower chamber, and its extended end is connected to the drive device.

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