An industrial gas desulfurization system and desulfurization method

Abstract

The present invention relates to the field of desulfurization, and provides an industrial gas desulfurization system, including a desulfurization tower, a regeneration tower, a desulfurizing agent supply device, a control unit, etc. The control unit can adjust the automatic discharging of the desulfurization tower to the regeneration tower, and can control the desulfurizing agent supply device or the regeneration tower to switch the feeding to the cylinder body of the desulfurization tower according to the operating state of the desulfurization system, ensuring the orderly replacement and recycling of the desulfurizing agent in the absorption tower, with high automation degree, improving the replacement efficiency of the desulfurization packing, saving labor costs, and avoiding potential health hazards caused by manual replacement.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial desulfurization, and particularly to an industrial gas desulfurization system and a desulfurization method. Background Art

[0002] In China, the control of the sulfur content in industrial exhaust gas emissions has become increasingly strict, raising the standards for industrial gas emissions. To meet the emission standards, enterprises must fully purify industrial gases. Currently, one of the more commonly used desulfurization systems is the dry desulfurization system, and its core device is a dry desulfurization tower. The dry desulfurization tower is filled with desulfurizing agents, adsorbents, catalysts and other fillers, which are consumables with a certain service life. To ensure good desulfurization effects, they must be replaced regularly. However, in the prior art, when loading or unloading the fillers in the dry desulfurization tower, the manual replacement method of fillers is mostly used, with a very large workload, low efficiency, long time consumption, and poor automation. In addition, when workers load or unload the fillers, they may also adsorb solid particles, damaging their health.

[0003] In view of this, a new type of desulfurization system with a relatively high degree of automation is needed. Summary of the Invention

[0004] The present invention provides an industrial gas desulfurization system, which can achieve automatic unloading and loading, with a relatively high degree of automation.

[0005] The industrial gas desulfurization system includes a desulfurization tower and a regeneration tower that work in groups;

[0006] The desulfurization tower is provided with a feed port A, a discharge port B, an air inlet C, and an air outlet D on its cylinder body. The feed port A is connected to the outlet of the desulfurizing agent supply device through a passage I provided with a first valve. The discharge port B is connected to the feed port of the regeneration tower through a passage II provided with a second valve. The discharge port K of the regeneration tower is connected to the feed port A of the desulfurization tower through a passage III provided with a third valve. The first valve, the second valve, and the third valve receive commands from the control unit;

[0007] The control unit adjusts the opening and closing states of the first valve, the second valve, and the third valve according to the desulfurization situation of the desulfurization tower to control the desulfurizing agent supply device or the regeneration tower to supply materials to the cylinder body, or to control the cylinder body to discharge materials to the regeneration tower.

[0008] As a mode, the desulfurization tower and the regeneration tower are provided with a desulfurizing agent loading amount detection structure connected to the control unit.

[0009] As a way, when preparing to start running, when the control unit determines that the amount of desulfurization agent loaded in the cylinder body of the desulfurization tower and the regeneration tower is less than the set amount according to the feedback result of the desulfurization agent loading detection structure, the control unit opens the first valve, closes the second valve and the third valve, and controls the desulfurization agent supply device to feed the cylinder body.

[0010] As a way, a sulfur content detection element is provided at the air outlet D, and the signal of the sulfur content detection element is sent to the control unit to feed back the detected sulfur content to the control unit;

[0011] When the control unit determines that the detected sulfur content exceeds the preset value, it controls the second valve to open, discharges a set amount of desulfurization agent in the cylinder body to the regeneration tower, and closes the second valve; then, the control unit opens the first valve or the third valve, and controls the desulfurization agent supply device or the regeneration tower to supply a set amount of desulfurization agent to the cylinder body.

[0012] As a way, when the control unit determines that the detected sulfur content exceeds the first preset value, after discharging a set amount of desulfurization agent in the cylinder body, the control unit adjusts and closes the second valve, then opens the first valve and keeps the third valve closed, and controls the desulfurization agent supply device to supply a set amount of desulfurization agent to the cylinder body;

[0013] When the control unit determines that the detected sulfur content exceeds the second preset value, the control unit adjusts and closes the second valve, then opens the third valve and keeps the first valve closed, and controls the regeneration tower to supply a set amount of desulfurization agent to the cylinder body;

[0014] Wherein, the first preset value is greater than the second preset value.

[0015] As a way, the desulfurization tower is a fluidized bed adsorption tower. The upper part of the cylinder body of the fluidized bed adsorption tower is provided with the feed inlet A and the air outlet D, and the air outlet D is connected to a dust removal device; a desulfurization agent layer is provided in the cylinder body, and a gas distribution plate for supporting the desulfurization agent layer and capable of being driven to act to form a discharge channel for the desulfurization agent to pass through is provided below the desulfurization agent layer; the discharge port B is communicated with the discharge channel.

[0016] As a way, the lower part of the cylinder body has an inverted conical structure with the bottom surface on the top and the top end on the bottom. The discharge port B is located at the top end of the conical structure. The gas distribution plate is arranged on the bottom surface of the conical structure, and the air inlet C is arranged on the conical structure and is located between the gas distribution plate and the discharge port B.

[0017] As a way, the dust removal device is a cyclone separator.

[0018] As a mode, a plurality of the desulfurization towers are arranged in parallel in the industrial gas desulfurization system, and the desulfurizing agent supply device and the regeneration tower are respectively arranged for each desulfurization tower; wherein, at least one of the desulfurization towers and the supporting desulfurizing agent supply device and the regeneration tower are kept in a standby state.

[0019] As a mode, the gas distribution plate includes: a fixing plate connected to the cylinder body, covering the cross-section of the cylinder body and provided with through holes through which the desulfurizing agent can pass;

[0020] An action plate is arranged above the fixing plate, provided with air-permeable holes for intercepting the desulfurizing agent and capable of being driven to act to cover or expose the through holes.

[0021] As a mode, the action plate includes a first plate and a second plate capable of relatively acting to cover or expose the through holes.

[0022] As a mode, at least one of the first plate and the second plate acts.

[0023] As a mode, the action plate includes two semi-circular plates capable of completely covering the cross-section of the cylinder body, and the two semi-circular plates are connected to the power output end of the driving device through an auxiliary connecting piece and slide towards each other to expose the through holes or slide away from each other to cover the through holes under the drive of the driving device.

[0024] As a mode, the action plate includes two sector plates capable of completely covering the cross-section of the cylinder body, and the two sector plates are connected to the power output end of the driving device through an auxiliary connecting piece and rotate relatively under the drive of the driving device to cover or expose the through holes.

[0025] The present invention also provides an industrial gas desulfurization method, which uses the industrial gas desulfurization system according to any one of the above to desulfurize the sulfur-containing industrial gas.

[0026] The technical solution of the present invention has the following advantages compared with the prior art:

[0027] 1. The industrial gas desulfurization system of the present invention can realize automatic loading and unloading of the desulfurization adsorbent, can eliminate the need for manual loading or unloading, has a high degree of automation, significantly increases the system operation efficiency, and reduces the labor intensity of workers.

[0028] 2. Further, the desulfurization tower of the industrial gas desulfurization system of the present invention is a fluidized bed adsorption tower, which makes the contact between the industrial gas and the desulfurization adsorbent more sufficient, and the gas desulfurization and purification effect is better.

[0029] 3. Further still, the gas distribution plate of the fluidized bed adsorption tower of the industrial gas desulfurization system of the present invention helps to conveniently perform automatic discharging, has a simple structure and high efficiency.

[0030] 4. As an optimization solution, the industrial gas desulfurization system of the present invention has automatic detection and automatic loading functions, realizing the high-efficiency and intelligent recycling of catalysts.

[0031] 5. As a solution, the industrial gas desulfurization system provided by the present invention includes an adsorption tower, a regeneration tower, a desulfurizer supply device, a cyclone separation, a power transmission, etc. The desulfurizer supply device can automatically transport the desulfurizer into the adsorption tower to ensure the orderly replacement of the desulfurizer in the adsorption tower.

[0032] In the adsorption tower, the industrial gas fully contacts with the desulfurizer to separate the sulfur components in the industrial gas. The desulfurized industrial gas exits the boundary area. An automatic unloading device is also provided in the adsorption tower, which can discharge the desulfurizer at the bottom out of the tower. The discharged desulfurizer is transported to the regeneration tower for reduction by power, and then the reduced desulfurizer is transported to the desulfurizer supply device for recycling.

[0033] This system provides a set of devices for automatically replacing desulfurization packing, improving the replacement efficiency of desulfurization packing, saving labor costs, and avoiding potential health hazards to personnel caused by manual replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0035] Figure 1 It is a schematic diagram of a working process of the industrial gas desulfurization system of the present invention.

[0036] Figure 2 It is a schematic structural diagram of the industrial gas desulfurization system of the present invention.

[0037] Figure 3 It is an exploded structural diagram of a gas distribution plate adopted by the present invention when the discharge channel is about to be opened.

[0038] Figure 4 It is another exploded structural diagram of a gas distribution plate adopted by the present invention when the discharge channel is about to be opened.

[0039] The markings in the drawings are explained as follows:

[0040] T-001A: Desulfurization tower; M-001: Desulfurizer supply device; T-001B: Regeneration tower; V-001: Dust removal device; XV-001: First valve; XV-002: Second valve; XV-003: Third valve; 1: First desulfurizer loading amount detection structure; 2: Sulfur content detection element; 3: Second desulfurizer loading amount detection structure; 4: Gas distribution plate; 5: Action plate; 6. Fixed plate; 7. Driving device; 8. Auxiliary connecting piece; 9. Installation pin shaft. Detailed implementation mode

[0041] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0042] An industrial gas desulfurization system, see Figure 1-2 , and its structure and basic working process are as follows:

[0043] The industrial gas desulfurization system includes a desulfurization tower T-001A and a regeneration tower T-001B that work in groups. Industrial gas is introduced into the desulfurization tower T-001A through a pipeline. After the desulfurization agent in the desulfurization tower T-001A acts until the content of sulfur and nitrogen oxides reaches the standard (obtaining purified gas, such as refined coal gas), it enters the subsequent process section for use;

[0044] The cylinder body of the desulfurization tower T-001A is provided with a feed port A, a discharge port B, an air inlet C, an air outlet D and a detection port. The feed port A is connected to the outlet F of the desulfurizer supply device M-001 through a channel I provided with a first valve XV-001. The discharge port B discharges the desulfurizer through a channel II provided with a second valve XV-002 and enters the regeneration tower T-001B for regeneration. The discharge port K of the regeneration tower T-001B discharges the regenerated desulfurizer through a channel III provided with a third valve XV-003 and loads it into the desulfurization tower T-001A according to the instructions of the control unit. The first valve XV-001, the second valve XV-002 and the third valve XV-003 receive the instructions of the control unit;

[0045] The control unit controls the opening and closing states of the first valve XV-001, the second valve XV-002 and the third valve XV-003 according to the desulfurization situation of the desulfurization tower T-001A, so as to control the desulfurizer supply device M-001 or the regeneration tower T-001B to supply materials to the cylinder body, or control the cylinder body to discharge materials to the regeneration tower T-001B.

[0046] The above-mentioned "group work" refers to work that is mutually supporting or cooperating.

[0047] The above-mentioned industrial gas desulfurization system can not only achieve automatic switching of feeding or discharging of the desulfurization tower T-001A, but also achieve automatic switching of different channels for supplying desulfurizing agents. It has a high degree of automation and production efficiency, and also regenerates and recycles the desulfurizing agent, improving the material utilization rate and saving costs.

[0048] As a solution, the desulfurization tower T-001A and the regeneration tower T-001B are provided with a desulfurizing agent loading amount detection structure connected to the control unit.

[0049] Specifically, referring to Figure 2 , the desulfurization tower T-001A is provided with a first desulfurizing agent loading amount detection structure 1, and the regeneration tower T-001B is provided with a second desulfurizing agent loading amount detection structure 3.

[0050] As a solution, when the industrial gas desulfurization system starts to operate, when the control unit determines that the amount of desulfurizing agent loaded in the cylinder body of the desulfurization tower T-001A and the regeneration tower T-001B is less than the set amount according to the feedback result of the desulfurizing agent loading amount detection structure, the control unit opens the first valve XV-001, closes the second valve XV-002 and the third valve XV-003, and controls the desulfurizing agent supply device M-001 to feed the cylinder body.

[0051] The above-mentioned "less than the set amount" can be set to zero. For example, when the industrial gas desulfurization system is first put into operation, it directly feeds through the desulfurizing agent supply device M-001.

[0052] The above-mentioned desulfurizing agent loading amount detection structure can adopt conventional weight detection elements or volume detection elements. There are various types on the market. As long as it can achieve the basic functions of the present invention, it is not limited to its specific structure or type.

[0053] As a solution, a sulfur content detection element 2 is provided at the gas outlet D, and the signal of the sulfur content detection element 2 is sent to the control unit to feed back the detected sulfur content to the control unit;

[0054] When the control unit determines that the detected sulfur content exceeds the preset value, it controls the second valve XV-002 to open, discharges a set amount of desulfurizing agent in the cylinder body to the regeneration tower T-001B, and closes the second valve XV-002; then, the control unit opens the first valve XV-001 or the third valve XV-003, and controls the desulfurizing agent supply device M-001 or the regeneration tower T-001B to supply a set amount of desulfurizing agent to the cylinder body.

[0055] As another solution, a detection port is separately provided on the cylinder body of the desulfurization tower T-001A near the air outlet D, and the sulfur content detection element 2 is arranged at this detection port for convenient detection at any time.

[0056] As a solution, when the control unit determines that the detected sulfur content exceeds the first preset value, after a set amount of desulfurizer is discharged from the cylinder body, the control unit adjusts and closes the second valve XV-002, then opens the first valve XV-001 and keeps the third valve XV-003 closed, and controls the desulfurizer supply device M-001 to supply a set amount of desulfurizer to the cylinder body;

[0057] When the control unit determines that the detected sulfur content exceeds the second preset value, the control unit adjusts and closes the second valve XV-002, then opens the third valve XV-003 and keeps the first valve XV-001 closed, and controls the regeneration tower T-001B to supply a set amount of desulfurizer to the cylinder body;

[0058] Wherein, the first preset value is greater than the second preset value.

[0059] The above solution can not only ensure the desulfurization effect, but also regenerate and recycle the old desulfurizer as much as possible, reduce the input of new desulfurizer, and lower the operation cost.

[0060] As a solution, the desulfurization tower T-001A is a fluidized bed adsorption tower. The upper part of the cylinder body of the fluidized bed adsorption tower is provided with the feed inlet A and the air outlet D, and the air outlet D is connected to the dust removal device V-001; a desulfurizer layer is arranged in the cylinder body, and a gas distribution plate 4 for supporting the desulfurizer layer and capable of being driven to act to form a discharge channel for the desulfurizer to pass through is arranged below the desulfurizer layer; the discharge port B is communicated with the discharge channel.

[0061] The above gas distribution plate 4 is normally used to support the desulfurizer layer and only acts to open the discharge channel when discharging is required.

[0062] Here, "supporting the desulfurizer layer" means supporting the desulfurizer layer and preventing the leakage of the desulfurizer. The area of the gas distribution plate 4 is at least not less than the cross-sectional area of the desulfurizer layer in the horizontal direction.

[0063] Specifically, the above dust removal device V-001 can be a cyclone separator.

[0064] The gas distribution plate 4 in the above solution can not only evenly distribute and disperse the industrial gas to be treated, improve the gas desulfurization and purification effect, but also realize the controllable unloading of the desulfurizer at the same time, achieve multiple functions with a simple structure, simplify the system setting, and kill two birds with one stone.

[0065] As a specific solution, the lower part of the cylinder body has an inverted conical structure with the bottom surface facing up and the top end facing down. The discharge port B is located at the top end of the conical structure. The gas distribution plate 4 is arranged on the bottom surface of the conical structure, and the air inlet C is arranged on the conical structure and is located between the gas distribution plate 4 and the discharge port B.

[0066] The structural feature of the cylinder body in the above solution facilitates convenient discharging in cooperation with the gas distribution plate 4, and the structure is simple.

[0067] As a solution, the gas distribution plate 4 includes: a fixing plate 6 connected to the cylinder body, covering the cross-section of the cylinder body and provided with through holes through which the desulfurizer can pass;

[0068] An action plate 5 arranged above the fixing plate 6, having air permeable holes for intercepting the desulfurizer and capable of being driven to act to cover or expose the through holes.

[0069] As a way, the action plate 5 is directly placed on the upper surface of the fixing plate 6.

[0070] As a way, a part of the action plate 5 is connected to the inner wall of the cylinder body and is suspended above the fixing plate 6.

[0071] Specifically, referring to Figure 3-4 , at least two mounting pin shafts 9 are provided on the periphery of the fixing plate 6. Bushings (not shown in the figure) respectively matching the two mounting pin shafts 9 are welded on the inner wall of the cylinder body of the desulfurization tower T-001A. The two ends of the mounting pin shaft 9 are respectively connected to the holes of the bushing, connecting the fixing plate 6 and the cylinder body together.

[0072] Specifically, the mounting pin shaft 9 can be arranged perpendicular or parallel to the plane of the fixing plate 6.

[0073] The above fixing plate 6 can be connected to the cylinder body through a simple structure. The action plate 5 is directly placed above the fixing plate 6, and other mounting structures can be dispensed with. The structure is simple, and it is convenient for disassembly and installation.

[0074] The through holes on the fixing plate 6 located below are relatively large, allowing the desulfurizer to pass through. The air permeable holes on the action plate 5 located above are relatively small. Industrial gas can pass through, but the desulfurizer cannot pass through. When discharging is not carried out, the action plate 5 above completely covers the through holes on the fixing plate 6, intercepting the desulfurizer. When discharging, the action plate 5 above shrinks towards a part of the fixing plate 6, exposing the through holes on the fixing plate 6, and then enabling the desulfurizer to leak out from the through holes to achieve discharging.

[0075] As a solution, the action plate 5 includes a first plate and a second plate that can perform relative actions to cover or expose the through holes.

[0076] As a solution, at least one of the first plate and the second plate performs an action.

[0077] As a specific implementation, as Figure 3 shown, the action plate 5 includes two semi-circular plates that can completely cover the cross-section of the cylinder body. The two semi-circular plates are connected to the power output end of the driving device 7 through the auxiliary connecting member 8 and slide towards each other or away from each other under the drive of the driving device 7 to expose or cover the through hole. Figure 3 In the starting state, the two semi-circular plates completely cover the through hole on the fixed plate 6, ready for discharging. The driving device 7 makes at least one of the two semi-circular plates slide in the direction of reducing the area, exposing the through hole on the fixed plate 6, and discharging.

[0078] As another specific implementation, as Figure 4 shown, the action plate 5 includes two sector plates that can completely cover the cross-section of the cylinder body. The two sector plates are connected to the power output end of the driving device 7 through the auxiliary connecting member 8 and rotate relative to each other under the drive of the driving device 7 to expose or cover the through hole. Figure 4 In the starting state, the two sector plates completely cover the through hole on the fixed plate 6, ready for discharging. The driving device 7 makes at least one of the two sector plates rotate in the direction of reducing the area, exposing the through hole on the fixed plate 6, and discharging.

[0079] The above-mentioned auxiliary connecting member 8 can adopt a conventional structure such as a connecting rod, as long as it can achieve the effect of driving the action plate to perform an action. It can be purchased in the market and will not be elaborated here.

[0080] As a solution, a plurality of the desulfurization towers T-001A are arranged in parallel in the industrial gas desulfurization system, and each desulfurization tower T-001A is respectively equipped with the desulfurizing agent supply device M-001 and the regeneration tower T-001B; wherein, at least one of the desulfurization towers T-001A and the supporting desulfurizing agent supply device M-001 and the regeneration tower T-001B are in a standby state.

[0081] The present invention also relates to a desulfurization method for treating sulfur-containing industrial gas by using the above industrial gas desulfurization system. The gas treated by this method meets the national emission standards, has a high desulfurization efficiency, can make full use of desulfurization fillers, and reduces the operation cost.

[0082] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present invention.

Claims

1. An industrial gas desulfurization system, characterized in that, It includes a desulfurization tower and a regeneration tower that work in groups; On the cylinder body of the desulfurization tower, there are a feed inlet A, a discharge outlet B, an air inlet C, and an air outlet D. The feed inlet A is connected to the outlet of the desulfurizer supply device through a passage I provided with a first valve. The discharge outlet B is connected to the feed inlet of the regeneration tower through a passage II provided with a second valve. The discharge outlet K of the regeneration tower is connected to the feed inlet A of the desulfurization tower through a passage III provided with a third valve. The first valve, the second valve, and the third valve receive commands from the control unit; According to the desulfurization situation of the desulfurization tower, the control unit adjusts the opening and closing states of the first valve, the second valve, and the third valve to control the desulfurizer supply device or the regeneration tower to supply materials to the cylinder body, or to control the cylinder body to discharge materials to the regeneration tower; The desulfurization tower and the regeneration tower are provided with a desulfurizer loading amount detection structure connected to the control unit; The desulfurization tower is a fluidized bed adsorption tower. The upper part of the cylinder body of the fluidized bed adsorption tower is provided with the feed inlet A and the air outlet D. The air outlet D is connected to a dust removal device. Inside the cylinder body, there is a desulfurizer layer. Below the desulfurizer layer, there is a gas distribution plate that supports the desulfurizer layer and can be driven to form a discharge passage for the desulfurizer to pass through. The discharge outlet B is communicated with the discharge passage. The lower part of the cylinder body has an inverted conical structure with the bottom surface on top and the top end at the bottom. The discharge outlet B is located at the top end of the conical structure. The gas distribution plate is arranged on the bottom surface of the conical structure. The air inlet C is arranged on the conical structure and is located between the gas distribution plate and the discharge outlet B; A plurality of the above-mentioned desulfurization towers are arranged in parallel in the industrial gas desulfurization system. Each desulfurization tower is respectively equipped with the desulfurizer supply device and the regeneration tower; among them, at least one desulfurization tower and the supporting desulfurizer supply device and regeneration tower are in a standby state; The gas distribution plate includes: A fixed plate connected to the cylinder body, covering the cross-section of the cylinder body and provided with through holes for the desulfurizer to pass through; An action plate arranged above the fixed plate, provided with breathable holes for intercepting the desulfurizer and capable of being driven to act to cover or expose the through holes. The action plate includes a first plate and a second plate that can perform relative actions to cover or expose the through holes; At least one of the first plate and the second plate performs an action.

2. The industrial gas desulfurization system according to claim 1, wherein: When starting to run, when the control unit judges that the desulfurizer amounts loaded in the cylinder body of the desulfurization tower and the regeneration tower are less than the set amount according to the feedback result of the desulfurizer loading amount detection structure, the control unit opens the first valve, closes the second valve and the third valve, and controls the desulfurizer supply device to supply materials to the cylinder body.

3. The industrial gas desulfurization system according to claim 1, wherein: A sulfur content detection element is provided at the air outlet D. The signal of the sulfur content detection element is sent to the control unit, and the detected sulfur content is fed back to the control unit; When the control unit determines that the detected sulfur content exceeds a preset value, it controls the second valve to open, discharges a set amount of desulfurizer in the cylinder body to the regeneration tower, and then closes the second valve; then, the control unit opens the first valve or the third valve, and controls the desulfurizer supply device or the regeneration tower to supply a set amount of desulfurizer to the cylinder body.

4. The industrial gas desulfurization system according to claim 3, characterized in that: When the control unit determines that the detected sulfur content exceeds a first preset value, after discharging a set amount of desulfurizer in the cylinder body, the control unit adjusts and closes the second valve, then opens the first valve and keeps the third valve closed, and controls the desulfurizer supply device to supply a set amount of desulfurizer to the cylinder body; When the control unit determines that the detected sulfur content exceeds a second preset value, the control unit adjusts and closes the second valve, then opens the third valve and keeps the first valve closed, and controls the regeneration tower to supply a set amount of desulfurizer to the cylinder body; Wherein, the first preset value is greater than the second preset value.

5. The industrial gas desulfurization system according to any one of claims 1-4, characterized in that: The dust removal device is a cyclone separator.

6. The industrial gas desulfurization system according to claim 1, wherein, The action plate includes two semi-circular plates that can completely cover the cross-section of the cylinder body. The two semi-circular plates are connected to the power output end of the driving device through auxiliary connectors and slide towards each other under the drive of the driving device to expose the through hole or slide away from each other to cover the through hole.

7. The industrial gas desulfurization system according to claim 1, wherein The action plate includes two sector plates that can completely cover the cross-section of the cylinder body. The two sector plates are connected to the power output end of the driving device through auxiliary connectors and rotate relative to each other under the drive of the driving device to cover or expose the through hole.

8. An industrial gas desulfurization method, characterized in that, The sulfur-containing industrial gas is desulfurized by using the industrial gas desulfurization system according to any one of claims 1-7.

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