Manganese slag desulfurization tail gas purification device
The integrated device solves the problem of low efficiency in treating desulfurization tail gas from manganese slag by using filtration and separation components, achieving efficient purification and environmental protection.
Patent Information
- Application Number
- CN202511808920.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-03
- Publication Date
- 2026-01-02
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing technologies are inefficient in treating desulfurization tail gas from manganese slag, requiring multiple equipment treatments without effectively removing harmful substances, thus posing a potential environmental pollution hazard.
The device is an integrated unit that includes a filtration component and a separation component. It uses an activated carbon plate to pre-treat harmful substances and a drive motor to drive a scraper to remove impurities, thus achieving efficient filtration and separation of the gas.
It achieves efficient purification of manganese slag desulfurization tail gas, simplifies the treatment process, improves treatment efficiency, and reduces environmental pollution.
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Figure CN121243935A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of atmospheric environmental pollution, and in particular to a manganese slag desulfurization tail gas purification device. BACKGROUND
[0002] Manganese slag desulfurization tail gas refers to the flue gas containing sulfur dioxide generated when manganese slag is treated by high-temperature roasting technology in the electrolytic manganese production process. The tail gas mainly comes from the high-temperature roasting process of manganese slag, and sulfur dioxide is the main pollutant. The tail gas needs to be treated by desulfurization technology to meet environmental protection requirements. At present, most electrolytic manganese slag tail gas is simply filtered and discharged, which has great hidden dangers of pollution to the surrounding atmosphere and soil.
[0003] The tail gas denitration purification device disclosed in the patent with the publication number CN118161978B comprises a denitration tower, storage barrel assemblies one and two are arranged at one end of the denitration tower away from a tail gas transfer assembly, the top of each of the storage barrel assemblies one and two is fixedly connected with an ammonia gas conveying assembly, and one end of each of the storage barrel assemblies one and two is fixedly connected with an ammonia water conveying assembly. The ammonia water enters an ammonia water pipeline two through an ammonia water pipeline one, and then flows into a space in a connecting bin through the ammonia water pipeline two. The space in the connecting bin is in communication with a ring-shaped inner groove of a connecting piece through a circular hole in a hole groove and a connecting hole of a sprayer. The ammonia water in the connecting bin flows into the ring-shaped inner groove, and then flows into a connecting pipe. Finally, the ammonia water is sprayed out of an outer shell. A plurality of dispersion plates in the outer shell can split the sprayed ammonia water, so that the ammonia water can fly everywhere, thereby increasing the mixing speed of the ammonia water and the tail gas and allowing the ammonia water and the tail gas to be better mixed.
[0004] There are still some problems in actual use.
[0005] The above patent and the present application belong to the same field, and both are for purifying tail gas. However, when manganese slag desulfurization tail gas is treated, most of the treatment is performed in a filtering, separating and cooling manner. The treatment process needs to use multiple devices for multiple treatments. The harmful substances in the gas are treated by using activated carbon materials, and then the impurities in the gas are separated out in a separation tower. The treatment efficiency is very low. SUMMARY
[0006] The purpose of the present application is to provide a manganese slag desulfurization tail gas purification device, which realizes the treatment of harmful substances in the gas entering the tank body by using a filtering assembly, and then separates the impurities in the gas by using a separating assembly, so as to complete the integrated treatment of the gas.
[0007] To achieve the above object, the application provides the following technical scheme: a manganese slag desulfurization tail gas purification device, comprising a tank body with upper and lower openings, a top cover is fixedly installed at the top end position of the tank body, an air inlet pipe is fixedly connected to the top end position of the top cover, a bottom cover is fixedly connected to the bottom end position of the tank body, a breather pipe is fixedly connected to the bottom end position of the bottom cover, a bottom disc is detachably installed at the bottom surface position of the breather pipe, and an exhaust pipe is fixedly connected to the surface position of the breather pipe;
[0008] Further comprising a filtering assembly, a separating assembly and a fastening assembly, the filtering assembly is arranged at the top surface position of the inner wall of the tank body for treating harmful substances in the gas, the separating assembly is arranged at the bottom position of the inner wall of the tank body for separating impurities in the gas, and the fastening assembly is arranged on the object placing plate for use in cooperation.
[0009] Preferably, the filtering assembly comprises a supporting ring fixedly installed at the top position of the inner wall of the tank body, a storage groove is formed in the inside of the supporting ring, a limiting ring is arranged in the inside of the storage groove, and an activated carbon plate is fixedly installed on the limiting ring.
[0010] Preferably, a sliding groove is formed at the edge position of the limiting ring, a circular groove is formed at the edge position of the limiting ring, the sliding groove and the circular groove are in communication with each other, a limiting column is fixedly connected to the inner wall of the storage groove, a clasp ring matched with the circular groove is fixedly connected to the top end of the limiting column, and the limiting column is clamped in the inside of the sliding groove.
[0011] Preferably, the separating assembly comprises a circular ring fixedly connected to the inner wall of the tank body near the bottom position, an upper and lower opening filtering cover is arranged on the circular ring, a butt joint ring is fixedly connected to the surface position of the filtering cover, the butt joint ring is attached to the circular ring, a plurality of circular holes are formed in the inner wall of the filtering cover, the bottom opening position of the filtering cover is attached to the bottom opening position of the bottom cover, a plurality of pipelines are fixedly connected to the surface position of the bottom cover, and the other end of the pipeline is fixedly connected to a driving motor.
[0012] Preferably, a driving motor is fixedly installed at the bottom surface position of the bottom disc, a rod body is fixedly connected to the output end of the driving motor, and the top end of the rod body extends to the inside of the tank body through the bottom disc.
[0013] Preferably, a pair of sleeves are fixedly connected to the surface of the rod body, a plurality of first hinged seats are fixedly installed on the surface of the pair of sleeves, an arm plate is rotatably connected to the upper part of the first hinged seat, the other end of the arm plate is rotatably connected to a second hinged seat, the second hinged seat is fixedly installed on a scraper, and the scraper is attached to the inner wall of the filtering cover.
[0014] Preferably, the inner wall of the breather pipe is fixedly connected with a supporting plate in a transverse position, the supporting plate is rotatably connected with the rod body in a middle position, the rod body is slidably connected with a baffle plate near the opening position of the filter cover bottom, a spring is sleeved on the rod body, and two ends of the spring are fixedly connected with the top surface of the supporting plate and the bottom surface of the baffle plate respectively.
[0015] Preferably, the bottom surface of the baffle plate is attached with a cam, the cam is fixedly connected to one end of a rotating rod, and the other end of the rotating rod extends out of the breather pipe and is fixedly connected with a handle.
[0016] Preferably, the fastening assembly comprises a storage plate fixedly installed on the top surface of one of the sleeves, first shaft seats fixedly connected with the top surface of the storage plate on both sides, a driven plate rotatably connected with the first shaft seats, a second shaft seat rotatably connected with the other end of the driven plate, the second shaft seat being fixedly installed on a clamping block, and the other side of the clamping block being attached to the surface of the rod body.
[0017] Preferably, a side column is fixedly connected to the surface of the driven plate, a push plate is rotatably connected to the other end of the side column, the other end of the push plate is rotatably connected to a sleeve ring, the sleeve ring is threadedly connected to a threaded rod, the bottom end of the threaded rod is rotatably connected to an L-shaped plate, and the L-shaped plate is fixedly installed on the middle of the surface of the storage plate.
[0018] In summary, the present application has the following advantages:
[0019] 1. The structure of the present application is reasonable. When gas enters the inside of the tank through the gas inlet pipe on the top cover, an activated carbon plate is arranged on the top of the inner wall of the tank. The activated carbon plate can preliminarily treat harmful substances in the gas. When the activated carbon plate needs to be replaced, the limiting ring is rotated, so that the limiting column can slide in the sliding groove. When the limiting column slides into the circular groove, the limiting ring can be easily disassembled and replaced.
[0020] 2. The structure of the present application is reasonable. When gas enters the inside of the filter cover, the bottom opening of the filter cover is blocked by the baffle plate. The gas enters the outside of the filter cover through the circular hole. A pipe is fixedly connected to the bottom cover, and the other end of the pipe is fixedly connected to the breather pipe. The filtered gas enters the inside of the breather pipe through the pipe, and then is discharged through the bottom plate for next treatment. The rod body is rotated by the operation of the driving motor. The rotation of the rod body causes the scraper to scrape off the impurities on the inner wall of the filter cover. The handle is rotated to move the baffle plate upward. The bottom of the filter cover is opened, and the impurities enter the bottom wall of the breather pipe to be separated out. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.
[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the tank body;
[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the tank body;
[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the support ring;
[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the filter cover;
[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the filter cover;
[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the filter cover;
[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the storage plate;
[0029] Figure 8 It is Figure 6 It is a schematic diagram of the enlarged structure at A in the middle.
[0030] In the figure: 1, tank body; 101, top cover; 102, air inlet pipe; 103, bottom cover; 104, air pipe; 105, bottom disc; 106, exhaust pipe; 2, support ring; 201, storage groove; 202, limiting ring; 203, activated carbon plate; 204, chute; 205, circular groove; 206, limiting column; 207, snap ring; 3, circular ring; 301, filter cover; 302, butt joint ring; 303, circular hole; 304, pipeline; 305, driving motor; 306, rod body; 307, sleeve; 308, first hinge seat; 309, arm plate; 310, second hinge seat; 311, scraper; 312, support plate; 313, baffle; 314, spring; 315, cam; 316, rotating rod; 317, handle; 4, storage plate; 401, first shaft seat; 402, driven plate; 403, second shaft seat; 404, clamping block; 405, side column; 406, push plate; 407, sleeve ring; 408, threaded rod; 409, L-shaped plate. DETAILED DESCRIPTION
[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work are within the protection scope of the present application.
[0032] Embodiment: Reference Figure 1 Figure 8 The device for purifying desulfurization tail gas of manganese slag shown in the embodiment comprises a tank body 1 with upper and lower openings, a top cover 101 fixedly installed at the top end of the tank body 1, an air inlet pipe 102 fixedly connected to the top end of the top cover 101, a bottom cover 103 fixedly connected to the bottom end of the tank body 1, an air vent pipe 104 fixedly connected to the bottom end of the bottom cover 103, a bottom disc 105 detachably installed at the bottom surface of the air vent pipe 104, and an exhaust pipe 106 fixedly connected to the surface of the air vent pipe 104. The device further comprises a filtering assembly, a separating assembly, and a fastening assembly. The filtering assembly is arranged at the top inner wall of the tank body 1 for treating harmful substances in the gas, the separating assembly is arranged at the bottom inner wall of the tank body 1 for separating impurities in the gas, and the fastening assembly is arranged on the object plate 4 for use in cooperation.
[0033] Specifically, it is to be noted that the driving mode of the driving motor 305 is electrically connected to the control unit through wires, and the specific working principle therebetween is referred to the prior art, which will not be described in detail. The inside of the tank body 1 can be provided with a spraying device, so that the temperature of the gas can be reduced.
[0034] As an embodiment of the present embodiment, the filtering assembly comprises a supporting ring 2 fixedly installed at the top inner wall of the tank body 1. The supporting ring 2 is internally provided with an object groove 201. The object groove 201 is internally provided with a limiting ring 202. The limiting ring 202 is fixedly installed with an activated carbon plate 203. The edge portion of the limiting ring 202 is provided with a sliding groove 204. The edge portion of the limiting ring 202 is provided with a circular groove 205. The sliding groove 204 and the circular groove 205 are in communication with each other. The inner wall of the object groove 201 is fixedly connected with a limiting column 206. The top end of the limiting column 206 is fixedly connected with a clamping ring 207 matched with the circular groove 205. The limiting column 206 is clamped in the inside of the sliding groove 204.
[0035] Specifically, when the gas enters the inside of the tank body 1 through the gas inlet pipe 102 on the top cover 101, the activated carbon plate 203 is arranged at the top position of the inner wall of the tank body 1, and the harmful substances in the gas can be preliminarily treated through the activated carbon plate 203. When the activated carbon plate 203 needs to be replaced, the limiting ring 202 is rotated, so that the limiting column 206 can slide in the sliding groove 204, and when the limiting column 206 slides into the circular groove 205, the limiting ring 202 can be disassembled and replaced as a whole.
[0036] As an embodiment in the embodiment, the separation assembly comprises the circular ring 3 fixedly connected to the inner wall of the tank body 1 near the bottom position, the filter cover 301 with an upper and lower opening is arranged on the circular ring 3, the surface position of the filter cover 301 is fixedly connected with the butt joint ring 302, the butt joint ring 302 is attached to the circular ring 3, a plurality of groups of circular holes 303 are arranged on the inner wall of the filter cover 301, the bottom opening position of the filter cover 301 is attached to the bottom opening position of the bottom cover 103, a plurality of groups of pipelines 304 are fixedly connected to the surface position of the bottom cover 103, the other end of the pipeline 304 is fixedly connected to the driving motor 305, the driving motor 305 is fixedly installed on the bottom surface position of the bottom disc 105, the output end of the driving motor 305 is fixedly connected with the rod body 306, the top end of the rod body 306 extends to the inside of the tank body 1 through the bottom disc 105, a pair of sleeves 307 are fixedly connected to the surface of the rod body 306, a plurality of groups of first hinge seats 308 are fixedly installed on the surface of the pair of sleeves 307, the arm plate 309 is rotatably connected to the upper of the first hinge seat 308, the other end of the arm plate 309 is rotatably connected to the second hinge seat 310, the second hinge seat 310 is fixedly installed on the scraper 311, the scraper 311 is attached to the inner wall of the filter cover 301, the inner wall of the breather pipe 104 is fixedly connected with the transverse position of the supporting plate 312, the rod body 306 is rotatably connected to the middle position of the supporting plate 312, the rod body 306 is slidably connected with the baffle 313 near the bottom opening position of the filter cover 301, the spring 314 is sleeved on the rod body 306, the two ends of the spring 314 are fixedly connected with the top surface of the supporting plate 312 and the bottom surface of the baffle 313 respectively, the cam 315 is attached to the bottom surface position of the baffle 313, the cam 315 is fixedly connected to one end of the rotating rod 316, the other end of the rotating rod 316 extends to the outside of the breather pipe 104 and is fixedly connected with the rotating handle 317.
[0037] Specifically, when the gas enters the inside of the filter cover 301, the gas will enter the outside of the filter cover 301 through the round hole 303 due to the blocking of the bottom opening position of the filter cover 301 by the baffle 313, then the bottom cover 103 is fixedly connected with the pipeline 304, and the other end of the pipeline 304 is fixedly connected with the air pipe 104, the filtered gas will enter the inside of the air pipe 104 through the pipeline 304, and then be discharged through the bottom disc 105 for next processing, the rod body 306 is rotated by the operation of the driving motor 305, the rotation of the rod body 306 makes the scraper 311 scrape the impurities on the inner wall of the filter cover 301, then the knob 317 is rotated to make the baffle 313 move upward, the bottom position of the filter cover 301 is opened, and the impurities will enter the bottom position of the air pipe 104 for separation.
[0038] As an embodiment in the present embodiment, the fastening assembly comprises a storage plate 4 fixedly installed at the top position of one of the sleeves 307, the top surface of the storage plate 4 is fixedly connected with a first shaft seat 401 at both sides, the first shaft seat 401 is rotatably connected with a driven plate 402, the other end of the driven plate 402 is rotatably connected with a second shaft seat 403, the second shaft seat 403 is fixedly installed on a clamping block 404, the other side of the clamping block 404 is attached to the surface of the rod body 306, the surface of the driven plate 402 is fixedly connected with a side column 405, the other end of the side column 405 is rotatably connected with a push plate 406, the other end of the push plate 406 is rotatably connected with a sleeve ring 407, the sleeve ring 407 is threadedly connected with a threaded rod 408, the bottom end of the threaded rod 408 is rotatably connected with an L-shaped plate 409, and the L-shaped plate 409 is fixedly installed on the surface of the storage plate 4 at the middle position.
[0039] Specifically, when the sleeve 307 on the rod body 306 is taken down, the filter cover 301 is disassembled, the threaded rod 408 is rotated, the sleeve ring 407 is moved upward by the rotation of the threaded rod 408, the driven plate 402 on the side column 405 is rotated on the first shaft seat 401 by the pushing of the sleeve ring 407 through the push plate 406, so that the clamping block 404 is separated from the surface of the rod body 306, and the sleeve 307 is taken down as a whole.
[0040] The working principle of the present application is that when the gas enters the inside of the tank body 1 through the air inlet pipe 102 on the top cover 101, the activated carbon plate 203 is arranged at the top position of the inner wall of the tank body 1, the harmful substances in the gas can be preliminarily treated through the activated carbon plate 203, when the activated carbon plate 203 needs to be replaced, the limiting ring 202 is rotated, so that the limiting column 206 slides in the inside of the sliding groove 204, when the limiting column 206 slides into the circular groove 205, the limiting ring 202 as a whole is disassembled for replacement work;
[0041] When the gas enters the inside of the filter cover 301, because the bottom opening position of the filter cover 301 is blocked by the baffle 313, the gas will enter the outside position of the filter cover 301 through the round hole 303, then the bottom cover 103 is fixedly connected with the pipeline 304, and the other end of the pipeline 304 is fixedly connected on the air pipe 104, the filtered gas will enter the inside of the air pipe 104 through the pipeline 304, and then is discharged through the bottom disc 105 for next step processing, the rod body 306 is rotated by the operation of the driving motor 305, the rotation of the rod body 306 makes the scraper 311 scrape the impurities on the inner wall of the filter cover 301, then the knob 317 is rotated to make the baffle 313 move upward, the bottom position of the filter cover 301 is opened, and the impurities will enter the bottom position of the air pipe 104 to be separated out;
[0042] When the sleeve 307 on the rod body 306 is taken down, the filter cover 301 is disassembled, the threaded rod 408 is rotated, the sleeve ring 407 is moved upward by the rotation of the threaded rod 408, the driven plate 402 on the side column 405 is rotated on the first shaft seat 401 by the sleeve ring 407 and the push plate 406, so that the clamping block 404 is separated from the surface of the rod body 306, and the sleeve 307 is taken down as a whole.
[0043] Finally, it should be noted that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application is described in detail by referring to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A manganese slag desulfurization tail gas purification device, characterized in that, include The tank (1) has an upper and lower opening. A top cover (101) is fixedly installed at the top of the tank (1). An air inlet pipe (102) is fixedly connected to the top of the top cover (101). A bottom cover (103) is fixedly connected to the bottom of the tank (1). A vent pipe (104) is fixedly connected to the bottom of the bottom cover (103). A chassis (105) is detachably installed on the bottom surface of the vent pipe (104). An exhaust pipe (106) is fixedly connected to the surface of the vent pipe (104). It also includes a filter assembly, a separation assembly and a fastening assembly. The filter assembly is located on the top surface of the inner wall of the tank (1) for treating harmful substances in the gas. The separation assembly is located on the bottom surface of the inner wall of the tank (1) for separating impurities in the gas. The fastening assembly is located on the shelf (4) for use in conjunction with the filter assembly.
2. The manganese slag desulfurization tail gas purification device according to claim 1, characterized in that: The filter assembly includes a support ring (2) fixedly installed at the top of the inner wall of the tank (1). The support ring (2) has a storage groove (201) inside. The storage groove (201) is provided with a limiting ring (202) inside. An activated carbon plate (203) is fixedly installed on the limiting ring (202).
3. The manganese slag desulfurization tail gas purification device according to claim 2, characterized in that: The edge of the limiting ring (202) is provided with a sliding groove (204) and a circular groove (205). The sliding groove (204) and the circular groove (205) are interconnected. A limiting post (206) is fixedly connected to the inner wall of the storage slot (201). A retaining ring (207) that matches the circular groove (205) is fixedly connected to the top of the limiting post (206). The limiting post (206) is locked inside the sliding groove (204).
4. The manganese slag desulfurization tail gas purification device according to claim 2, characterized in that: The separation assembly includes a ring (3) fixedly connected to the inner wall of the tank (1) near the bottom. The ring (3) is provided with a filter cover (301) with openings at the top and bottom. A docking ring (302) is fixedly connected to the surface of the filter cover (301). The docking ring (302) is attached to the ring (3). Several sets of circular holes (303) are opened on the inner wall of the filter cover (301). The bottom opening of the filter cover (301) is attached to the bottom opening of the bottom cover (103). Several sets of pipes (304) are fixedly connected to the surface of the bottom cover (103). The other end of the pipes (304) is fixedly connected to the drive motor (305).
5. The manganese slag desulfurization tail gas purification device according to claim 4, characterized in that: A drive motor (305) is fixedly installed on the bottom surface of the chassis (105). A rod (306) is fixedly connected to the output end of the drive motor (305). The top end of the rod (306) extends through the chassis (105) into the interior of the tank (1).
6. The manganese slag desulfurization tail gas purification device according to claim 5, characterized in that: A pair of sleeves (307) are fixedly connected to the surface of the rod (306). Several sets of first hinge seats (308) are fixedly installed on the surface of the pair of sleeves (307). An arm plate (309) is rotatably connected to the upper part of the first hinge seat (308). The other end of the arm plate (309) is rotatably connected to a second hinge seat (310). The second hinge seat (310) is fixedly installed on a scraper (311). The scraper (311) is attached to the inner wall of the filter cover (301).
7. The manganese slag desulfurization tail gas purification device according to claim 6, characterized in that: A support plate (312) is fixedly connected to the inner wall of the vent pipe (104) at a horizontal position. The rod (306) is rotatably connected to the middle position of the support plate (312). A baffle (313) is slidably connected to the rod (306) near the bottom opening of the filter cover (301). A spring (314) is sleeved on the rod (306). The two ends of the spring (314) are fixedly connected to the top surface of the support plate (312) and the bottom surface of the baffle (313), respectively.
8. The manganese slag desulfurization tail gas purification device according to claim 7, characterized in that: The bottom surface of the baffle (313) is fitted with a cam (315), which is fixedly connected to one end of the rotating rod (316). The other end of the rotating rod (316) extends to the outside of the vent pipe (104) and is fixedly connected to the throttle (317).
9. The manganese slag desulfurization tail gas purification device according to claim 6, characterized in that: The fastening assembly includes a storage plate (4) fixedly installed on the top surface of one of the sleeves (307). A first bearing (401) is fixedly connected to both sides of the top surface of the storage plate (4). A driven plate (402) is rotatably connected to the first bearing (401). The other end of the driven plate (402) is rotatably connected to a second bearing (403). The second bearing (403) is fixedly installed on a clamping block (404). The other side of the clamping block (404) is attached to the surface of the rod (306).
10. The manganese slag desulfurization tail gas purification device according to claim 9, characterized in that: A side post (405) is fixedly connected to the surface of the driven plate (402). A push plate (406) is rotatably connected to the other end of the side post (405). The other end of the push plate (406) is rotatably connected to a collar (407). The collar (407) is threadedly connected to a threaded rod (408). The bottom end of the threaded rod (408) is rotatably connected to an L-shaped plate (409). The L-shaped plate (409) is fixedly installed at the middle position of the surface of the shelf (4).
Citation Information
Patent Citations
A tail gas denitration purification device
CN118161978B