Sulfur tail gas treatment device

Abstract

The utility model discloses a sulfur tail gas treatment device. The sulfur tail gas treatment device comprises a washing tower, a spraying assembly and an aeration assembly, the washing tower is filled with washing liquid and is provided with a tail gas inlet and a tail gas outlet which are communicated with the interior of the washing tower, and the tail gas outlet is formed in the top of the washing tower; the spraying assembly is arranged outside the washing tower and communicated with the tail gas exhaust port, and the spraying assembly can spray and wash the tail gas; the aeration assembly comprises an aeration pipeline, the air inlet end of the aeration pipeline is communicated with an external air source, and the air outlet end of the aeration pipeline extends into the washing liquid in the washing tower. After the tail gas enters the spraying assembly, the spraying assembly sprays and washes the tail gas, so that sulfur steam is cooled into solid sulfur powder, and the sulfur powder falls into the washing tower along with washing liquid. The aeration pipeline sprays air into the washing liquid to stir the washing liquid, so that the sulfur powder in the washing liquid is kept in a suspended state, and the subsequent discharge of the sulfur powder along with the washing liquid is facilitated. Therefore, accumulation of sulfur powder can be effectively reduced, so that the shutdown cleaning frequency is reduced, and the production efficiency is improved.

Description

Sulfur tail gas treatment device Technical Field

[0001] This application belongs to the field of exhaust gas treatment technology, specifically relating to a sulfur exhaust gas treatment device. Background Technology

[0002] During the sulfur melting process, sulfur is heated to a molten state, which may produce a mixture of gases containing sulfur vapors. This mixture may also include other acidic gases such as hydrogen sulfide and sulfur dioxide. To prevent this mixture from polluting the air, it needs to be treated.

[0003] Currently, washing towers are commonly used to wash mixed gases. However, when existing washing towers wash mixed gases containing sulfur vapor, the sulfur vapor cools into sulfur powder. The sulfur powder easily adheres and accumulates at the bottom of the washing tower and cannot be pumped out. It requires shutdown and manual cleaning, which affects production efficiency. Summary of the Invention

[0004] The technical problem this application aims to solve is that sulfur powder generated from the existing sulfur vapor mixed gas washing process accumulates at the bottom of the washing tower. The accumulated sulfur powder requires shutdown and manual cleaning, which affects production efficiency. To solve this technical problem, this application provides a sulfur tail gas treatment device that can reduce sulfur powder accumulation, reduce the number of shutdowns for cleaning, and improve production efficiency.

[0005] The technical solution proposed in this application is as follows:

[0006] A sulfur tail gas treatment device, comprising:

[0007] A scrubbing tower is filled with scrubbing liquid and has an exhaust gas inlet and an exhaust gas outlet that are connected to its own interior. The exhaust gas outlet is located at the top of the scrubbing tower.

[0008] A spray assembly is installed outside the scrubbing tower and connected to the exhaust gas outlet. The spray assembly is capable of spraying and scrubbing the exhaust gas.

[0009] An aeration assembly includes an aeration pipe, wherein the air inlet of the aeration pipe is connected to an external air source, and the air outlet extends into the washing liquid inside the washing tower.

[0010] Using the aforementioned sulfur tail gas treatment device, the tail gas enters the spray assembly, where it is scrubbed to cool the sulfur vapor into solid sulfur powder. The sulfur powder then falls into the scrubbing tower with the scrubbing liquid. Aeration pipes spray air into the scrubbing liquid to agitate it, keeping the sulfur powder suspended and facilitating its subsequent discharge. This effectively reduces sulfur powder accumulation, minimizing downtime for cleaning and improving production efficiency.

[0011] Furthermore, the spray assembly includes a spray pipe and a first spray nozzle. The spray pipe is located outside the scrubbing tower, and the bottom end of the spray pipe is connected to the exhaust gas outlet. The first spray nozzle is located inside the spray pipe.

[0012] Furthermore, the washing tower is equipped with a partition, the top of which is connected to the top wall inside the washing tower, and the bottom of which is inserted into the washing liquid to divide the space above the washing liquid surface into a first space and a second space. The exhaust gas inlet is connected to the first space, and the exhaust gas outlet is connected to the second space.

[0013] The spray assembly further includes a connecting pipe and a second spray nozzle. The connecting pipe is located outside the washing tower, with one end connected to the first space and the other end connected to the second space. The second spray nozzle is located inside the connecting pipe.

[0014] Furthermore, an exhaust port is provided at the top of the spray pipe;

[0015] The sulfur tail gas treatment device also includes a tail gas fan, which is connected to the exhaust port.

[0016] Furthermore, the spray assembly also includes a demister, which is disposed inside the spray pipe and located between the first spray nozzle and the exhaust port;

[0017] The sulfur tail gas treatment device also includes a liquid supply pipe connected to the top of the spray pipe for supplying washing liquid to the demister.

[0018] Furthermore, it also includes a circulation component, one end of which is connected to the washing tower and the other end of which is connected to the spraying component, so as to transport the washing liquid in the washing tower to the spraying component.

[0019] Furthermore, the circulation assembly includes a first circulation pipe, a circulation pump, and a second circulation pipe connected in sequence. The end of the first circulation pipe away from the circulation pump is connected to the side of the scrubbing tower, and the end of the second circulation pipe away from the circulation pump is connected to the spray assembly.

[0020] Furthermore, the circulation assembly also includes a first circulation valve, a second circulation valve, and a drain valve. The first circulation valve is disposed between the washing tower and the first circulation pipe, the second circulation valve is disposed between the second circulation pipe and the spray assembly, and the drain valve is connected to the first circulation pipe.

[0021] The sulfur tail gas treatment device further includes an air blowing assembly, which is connected to the first circulation pipe and the second circulation pipe. The connection position of the air blowing assembly and the first circulation pipe is located between the drain valve and the first circulation valve. The air blowing assembly can alternately blow air into the first circulation pipe and the second circulation pipe.

[0022] Furthermore, it also includes a filtration assembly connected to the washing tower for extracting and filtering the washing liquid in the washing tower, and the filtration assembly can also deliver the filtrate to the washing tower.

[0023] Furthermore, it also includes a pH adjustment component, which is connected to the washing tower and is used to input pH adjustment liquid into the washing tower. Attached Figure Description

[0024] The accompanying drawings are provided to further understand this application and form part of the specification. They are used together with the embodiments of this application to explain this application and do not constitute a limitation thereof.

[0025] Figure 1 is a schematic diagram of the structure of a sulfur tail gas treatment device provided in an embodiment of this application.

[0026] Label Explanation:

[0027] 110. Scrubber; 111. Air inlet pipe; 112. Baffle plate; 113. First space; 114. Second space; 120. Spray assembly; 121. Spray pipe; 122. First spray nozzle; 123. Connecting pipe; 124. Second spray nozzle; 125. Demister; 130. Aeration assembly; 140. Exhaust gas fan; 150. Liquid supply pipe; 160. Circulation assembly; 161. First circulation pipe; 162. Circulation pump; 163. Second circulation pipe; 164. First circulation valve; 165. Second circulation valve; 166. Branch pipe; 167. Drain valve; 170. Air blowing assembly; 180. Filter assembly; 181. Extraction pump; 182. Filter press; 190. pH adjustment assembly. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] This application provides a sulfur tail gas treatment device, which can treat the tail gas generated during the sulfur melting process and reduce the accumulation of sulfur powder, thereby reducing the number of shutdowns for cleaning and improving production efficiency. The sulfur melting process can be used for acid production or for preparing sulfur products, and is not limited thereto; if used for acid production, the production efficiency is the same as that for acid production.

[0031] As shown in Figure 1, in one embodiment, the sulfur tail gas treatment device includes a scrubbing tower 110, a spray assembly 120, and an aeration assembly 130.

[0032] The scrubbing tower 110 contains scrubbing liquid and has an exhaust gas inlet and an exhaust gas outlet connected to its interior. The exhaust gas inlet allows exhaust gas to enter the scrubbing tower 110, and the exhaust gas outlet allows exhaust gas to exit the scrubbing tower 110. The exhaust gas outlet is located at the top of the scrubbing tower 110. A spray assembly 120 is located outside the scrubbing tower 110 and connected to the exhaust gas outlet, used for spraying and scrubbing the exhaust gas. It is certain that the spray assembly 120 is located at the top of the scrubbing tower 110. After the exhaust gas enters the scrubbing tower 110, it can enter the spray assembly 120 through the exhaust gas outlet. The spray assembly 120 sprays and scrubs the exhaust gas, and the scrubbing liquid after scrubbing falls into the scrubbing tower 110 below. The aeration assembly 130 includes an aeration pipe. The air inlet of the aeration pipe is connected to an external air source, and the air outlet extends into the washing liquid inside the washing tower 110 to spray air into the washing liquid, thereby agitating the washing liquid inside the washing tower 110, so that the sulfur powder remains suspended in the washing liquid and reduces the accumulation of sulfur powder at the bottom.

[0033] Understandably, the washing liquid containing sulfur powder is usually discharged from the washing tower 110 to achieve the recycling of sulfur powder; the sulfur in a suspended state will be discharged with the washing liquid, thereby reducing the amount of sulfur powder accumulating at the bottom of the washing tower 110, reducing the number of shutdowns for cleaning, and improving production efficiency.

[0034] Using the aforementioned sulfur tail gas treatment device, the tail gas enters the spray assembly 120, where it is sprayed and washed to cool the sulfur vapor into solid sulfur powder. The sulfur powder then falls into the washing tower 110 along with the washing liquid. Aeration pipes spray air into the washing liquid to agitate it, keeping the sulfur powder suspended and facilitating its subsequent discharge. This effectively reduces sulfur powder accumulation, thereby minimizing downtime for cleaning and improving production efficiency.

[0035] In one embodiment, the aeration assembly 130 further includes a plurality of jet nozzles, which are spaced apart at the air outlet end of the aeration pipe to spray air into the washing liquid, thereby improving the agitation effect on the washing liquid. Specifically, in the embodiment shown in Figure 1, the air outlet end of the aeration pipe is located at the bottom inside the washing tower 110.

[0036] In one embodiment, the sulfur tail gas treatment device further includes an inlet pipe 111, the inlet end of which is connected to a tail gas collection container during the sulfur melting process to obtain the tail gas generated during the sulfur melting process. The outlet end of the inlet pipe 111 extends into the scrubbing tower 110 through the tail gas inlet and is located above the liquid surface of the scrubbing liquid to input the tail gas into the scrubbing tower 110.

[0037] Furthermore, the outlet end of the intake pipe 111 faces the washing liquid so that the input exhaust gas directly hits the washing liquid, allowing the washing liquid to initially cool and absorb the sulfur vapor in the exhaust gas. Subsequently, the exhaust gas enters the spray assembly 120 for further absorption, thereby improving the absorption effect of sulfur.

[0038] In one embodiment, the spray assembly 120 includes a spray pipe 121 and a first spray nozzle 122. The spray pipe 121 is disposed outside the scrubbing tower 110, and its bottom end is connected to the exhaust gas outlet, while its top end has an exhaust port. The first spray nozzle 122 is disposed inside the spray pipe 121. After the exhaust gas enters the spray pipe 121 through the exhaust gas outlet, the first spray nozzle 122 sprays washing liquid inside the spray pipe 121, thereby scrubbing the exhaust gas inside the spray pipe 121. The washed washing liquid can fall into the scrubbing tower 110 below.

[0039] In one embodiment, a partition 112 is provided inside the scrubbing tower 110. The top end of the partition 112 is connected to the top wall inside the scrubbing tower 110, and the bottom end is inserted into the scrubbing liquid, thereby dividing the space above the surface of the scrubbing liquid into a first space 113 and a second space 114. The exhaust gas inlet is connected to the first space 113, and the exhaust gas outlet is connected to the second space 114. It is certain that both sides of the partition 112 are also connected to the side walls of the inner wall of the scrubbing tower 110, thereby separating the first space 113 and the second space 114 within the scrubbing tower 110 in conjunction with the scrubbing liquid.

[0040] Furthermore, the spray assembly 120 also includes a connecting pipe 123 and a second spray nozzle 124. The connecting pipe 123 is located outside the scrubbing tower 110, with one end connected to the first space 113 and the other end connected to the second space 114. Thus, after the exhaust gas enters the first space 113, it can enter the second space 114 through the connecting pipe 123, and then enter the spray pipe 121 through the exhaust gas outlet. The second spray nozzle 124 is located inside the connecting pipe 123 and is used to spray and wash the exhaust gas passing through the connecting pipe 123. Similarly, the second spray nozzle 124 sprays and washes the exhaust gas inside the connecting pipe 123, and the washed liquid can fall into the scrubbing tower 110 below; simultaneously, spraying and washing the exhaust gas inside the connecting pipe 123 first, and then spraying and washing the exhaust gas entering the spray pipe 121, can improve the spray washing effect.

[0041] In one embodiment, the spray pipe 121 includes a washing section and an exhaust section connected in sequence. The bottom of the washing section is connected to the top of the washing tower 110 and communicates with the second space 114; a first spray nozzle 122 is disposed in the washing section. The exhaust section is located above the washing section and has an exhaust port for discharging the exhaust gas after spray washing. Specifically, as shown in Figure 1, the sulfur exhaust gas treatment device also includes an exhaust gas fan 140, which is connected to the exhaust port to extract and vent the exhaust gas after spray washing.

[0042] In one embodiment, the spray assembly 120 further includes a demister 125, which is disposed within the spray pipe 121 and located between the first spray nozzle 122 and the exhaust port, for example, at the connection between the washing section and the exhaust section. Further, the sulfur tail gas treatment device also includes a liquid supply pipe 150, which is connected to the top of the spray pipe 121 and is used to supply washing liquid to the demister 125, so that the demister 125 is wetted by the washing liquid, thereby allowing the tail gas to be washed again by the washing liquid in the demister 125 as it passes through, improving the washing effect on the tail gas.

[0043] It should be noted that the liquid supply pipe 150 may be provided with two branches, one of which is connected to the top of the spray pipe 121, and the other branch is connected to the top of the scrubbing tower 110, for replenishing the scrubbing liquid into the scrubbing tower 110.

[0044] In one embodiment, the connecting pipe 123 includes a first vertical section, a connecting section, and a second vertical section connected in sequence. Both the first and second vertical sections extend vertically and their bottoms are connected to the top of the scrubbing tower 110. The bottom of the first vertical section communicates with the first space 113, and the bottom of the second vertical section communicates with the second space 114. A plurality of second spray nozzles 124 are divided into two groups, one group of which is disposed within the first vertical section, and the other group of which is disposed within the second vertical section.

[0045] Specifically, in the embodiment shown in Figure 1, the outlet end of the second vertical section extends into the second space 114 and is located close to the surface of the washing liquid, for example, the distance between it and the surface of the washing liquid is 10cm. This can extend the tail gas spray washing time in the second vertical section and also allow the gas output from the second vertical section to rush towards the washing liquid, such as the air inlet pipe 111 mentioned above, which can further improve the absorption effect of sulfur.

[0046] In one embodiment, the sulfur tail gas treatment device further includes a circulation component 160, one end of which is connected to a scrubbing tower 110 and the other end of which is connected to a spraying component 120, so as to transport the scrubbing liquid in the scrubbing tower 110 to the spraying component 120, thereby realizing the recycling of the scrubbing liquid. This can not only prevent excessive accumulation of scrubbing liquid in the scrubbing tower 110, but also reduce the consumption of scrubbing liquid, reduce costs, and also agitate the scrubbing liquid in the scrubbing tower 110.

[0047] Furthermore, the circulation assembly 160 includes a first circulation pipe 161, a circulation pump 162, and a second circulation pipe 163 connected in sequence. The end of the first circulation pipe 161 away from the circulation pump 162 is connected to the scrubbing tower 110; the end of the second circulation pipe 163 away from the circulation pump 162 is connected to the spray assembly 120, and simultaneously connected to the first spray nozzle 122 and the second spray nozzle 124. Thus, the scrubbing liquid in the scrubbing tower 110 can be extracted by the circulation pump 162 and transported to the second spray nozzle 124 and the first spray nozzle 122, where the scrubbing liquid is sprayed to scrub the exhaust gas.

[0048] In one embodiment, the circulation assembly 160 further includes a first circulation valve 164 and a second circulation valve 165. The first circulation valve 164 is disposed between the washing tower 110 and the first circulation pipe 161 and is used to control the on / off state between the washing tower 110 and the first circulation pipe 161. The second circulation valve 165 is disposed between the second circulation pipe 163 and the spray assembly 120 and is used to control the on / off state between the second circulation pipe 163 and the spray assembly 120.

[0049] Specifically, in the embodiment shown in Figure 1, the circulation assembly 160 further includes multiple branch pipes 166, all of which are connected to the second circulation valve 165. One end of some branch pipes 166, away from the second circulation valve 165, is connected to the second spray nozzle 124, while the other end of some branch pipes 166, away from the second circulation valve 165, is connected to the first spray nozzle 122. Alternatively, in other embodiments, some branch pipes 166 may be directly connected to the top of the scrubbing tower 110 to circulate the scrubbing liquid within the scrubbing tower 110, further agitating the scrubbing liquid and keeping the sulfur powder in suspension.

[0050] In one embodiment, the circulation assembly 160 further includes a drain valve 167 connected to the first circulation pipe 161; the sulfur tail gas treatment device further includes an air blowing assembly 170 connected to the first circulation pipe 161 and the second circulation pipe 163, with the connection point between the air blowing assembly 170 and the first circulation pipe 161 located between the drain valve 167 and the first circulation valve 164. When the circulation pump 162 is stopped, the air blowing assembly 170 can alternately blow air into the first circulation pipe 161 and the second circulation pipe 163, thereby blowing out the accumulated material at the circulation pump 162 through the drain valve 167 by forward and reverse blowing.

[0051] Specifically, in the embodiment shown in Figure 1, the air blowing assembly 170 includes two air blowing pipes and two air blowing valves. The two air blowing pipes are respectively connected to the first circulation pipe 161 and the second circulation pipe 163, and the two air blowing valves are correspondingly arranged on the two air blowing pipes to control the opening and closing of the two air blowing pipes respectively.

[0052] If it is necessary to blow out the buildup at the front end of the circulation pump 162, close the air valve on the air blowing pipe connected to the second circulation pipe 163, and simultaneously close the first circulation valve 164 and the second circulation valve 165 to stop the circulation of the washing liquid. Then, open the air valve on the air blowing pipe connected to the first circulation pipe 161 and open the drain valve 167. If it is necessary to blow the air forward towards the circulation pump 162, the second circulation valve 165 can be opened and the drain valve 167 closed on the basis of the former. If it is necessary to blow the air backward towards the circulation pump 162 and blow out the blockage in the circulation pump 162, close the air valve on the air blowing pipe connected to the first circulation pipe 161, and simultaneously close the first circulation valve 164 and the second circulation valve 165 to stop the circulation of the washing liquid. Then, open the air valve on the air blowing pipe connected to the second circulation pipe 163 and open the drain valve 167.

[0053] In one embodiment, the sulfur tail gas treatment device further includes a filter assembly 180, which is connected to a scrubbing tower 110 and is used to extract and filter the scrubbing liquid in the scrubbing tower 110. The filter assembly 180 can also transport the filtrate back to the scrubbing tower 110, thereby collecting the sulfur powder suspended in the scrubbing liquid and transporting the scrubbing liquid with sulfur powder removed back to the scrubbing tower 110, thus achieving sulfur powder collection while avoiding waste of scrubbing liquid.

[0054] Furthermore, the filtration assembly 180 includes a pump 181 and a filter press 182. The pump 181 is connected to the washing tower 110 and the filter press 182 to draw the washing liquid in the washing tower 110 into the filter press 182. The liquid phase output end of the filter press 182 is connected to the top of the washing tower 110, thereby transporting the filtered washing liquid back to the washing tower 110.

[0055] It should be noted that the solid phase output of filter press 182 mainly consists of solid sulfur, which can be collected and reused. Additionally, the washing liquid output from the liquid phase output of filter press 182 can be discharged into a collection tank.

[0056] In one embodiment, the sulfur tail gas device further includes a pH adjustment component 190, which is connected to a scrubbing tower 110 and used to introduce a pH adjustment liquid into the scrubbing tower 110 to adjust the pH of the scrubbing liquid within the scrubbing tower 110. It should be noted that in this embodiment, the tail gas also includes gases such as hydrogen sulfide and sulfur dioxide. Hydrogen sulfide and sulfur dioxide are easily absorbed by the scrubbing liquid to generate acidic substances, causing the scrubbing liquid to become acidic. Therefore, the pH adjustment liquid can be an alkaline solution, such as a sodium hydroxide solution.

[0057] To facilitate understanding of the technical solution of this application, the processing flow of the sulfur tail gas treatment device in the above embodiments is described below:

[0058] The exhaust gas enters the first space 113 through the inlet pipe 111 and flows directly into the washing liquid below, where the washing liquid cools and absorbs some of the sulfur vapor. The exhaust gas then enters the connecting pipe 123, passing sequentially through the first vertical section, the connecting section, and the second vertical section into the second space 114. It then enters the spray pipe 121 through the exhaust outlet, passing sequentially through the washing section and the exhaust section. The exhaust gas undergoes spray washing in the first vertical section, the second vertical section, and the washing section, and the washing liquid flows into the washing tower 110 below. After being sprayed and washed, the exhaust gas passes through the demister 125 and is then discharged through the exhaust port and the exhaust gas fan 140. During the spraying process, compressed gas is continuously introduced into the bottom of the washing liquid through the aeration pipe to agitate it. After absorbing a certain amount of sulfur powder, the washing liquid in the washing tower 110 can be pumped into the filter press 182 for filtration using the extraction pump 181. The filtrate is returned to the washing tower 110, and the filter residue is collected.

[0059] Meanwhile, a pH detector can be installed at the scrubbing tower 110, for example, before the first circulation valve 164. The pH adjustment component 190 controls the input of pH adjustment liquid based on the detection result of the pH detector to adjust the pH of the scrubbing liquid (the pH value is usually 5-9). At the same time, a level detector can also be installed to detect the liquid level of the scrubbing liquid in the scrubbing tower 110. When the liquid level of the scrubbing liquid is low, scrubbing liquid can be input into the scrubbing tower 110 through the liquid supply pipe 150.

[0060] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sulfur tail gas treatment device, characterized in that, include: A scrubbing tower is filled with scrubbing liquid and has an exhaust gas inlet and an exhaust gas outlet that are connected to its own interior. The exhaust gas outlet is located at the top of the scrubbing tower. A spray assembly is installed outside the scrubbing tower and connected to the exhaust gas outlet. The spray assembly can spray and wash the exhaust gas. An aeration assembly includes an aeration pipe. The air inlet of the aeration pipe is connected to an external air source, and the air outlet extends into the washing liquid inside the scrubbing tower.

2. The sulfur tail gas treatment device according to claim 1, characterized in that, The spray assembly includes a spray pipe and a first spray nozzle. The spray pipe is located outside the scrubbing tower, and the bottom end of the spray pipe is connected to the exhaust gas outlet. The first spray nozzle is located inside the spray pipe.

3. The sulfur tail gas treatment device according to claim 2, characterized in that, The washing tower is equipped with a partition, the top of which is connected to the top wall inside the washing tower, and the bottom of which is inserted into the washing liquid to divide the space above the washing liquid surface into a first space and a second space. The exhaust gas inlet is connected to the first space, and the exhaust gas outlet is connected to the second space. The spray assembly also includes a connecting pipe and a second spray nozzle. The connecting pipe is located outside the washing tower, with one end connected to the first space and the other end connected to the second space. The second spray nozzle is located inside the connecting pipe.

4. The sulfur tail gas treatment device according to claim 2, characterized in that, The top of the spray pipe is provided with an exhaust port; the sulfur tail gas treatment device also includes a tail gas fan, which is connected to the exhaust port.

5. The sulfur tail gas treatment device according to claim 4, characterized in that, The spray assembly further includes a demister disposed within the spray pipe and located between the first spray nozzle and the exhaust port; the sulfur tail gas treatment device further includes a liquid supply pipe connected to the top of the spray pipe for supplying washing liquid to the demister.

6. The sulfur tail gas treatment device according to claim 1, characterized in that, It also includes a circulation component, one end of which is connected to the washing tower and the other end of which is connected to the spraying component, so as to transport the washing liquid in the washing tower to the spraying component.

7. The sulfur tail gas treatment device according to claim 6, characterized in that, The circulation assembly includes a first circulation pipe, a circulation pump, and a second circulation pipe connected in sequence. The end of the first circulation pipe away from the circulation pump is connected to the side of the scrubbing tower, and the end of the second circulation pipe away from the circulation pump is connected to the spray assembly.

8. The sulfur tail gas treatment device according to claim 7, characterized in that, The circulation assembly further includes a first circulation valve, a second circulation valve, and a drain valve. The first circulation valve is disposed between the scrubbing tower and the first circulation pipe, the second circulation valve is disposed between the second circulation pipe and the spray assembly, and the drain valve is connected to the first circulation pipe. The sulfur tail gas treatment device further includes an air blowing assembly, which is connected to the first circulation pipe and the second circulation pipe. The connection position of the air blowing assembly to the first circulation pipe is located between the drain valve and the first circulation valve. The air blowing assembly can alternately blow air into the first circulation pipe and the second circulation pipe.

9. The sulfur tail gas treatment device according to claim 6, characterized in that, It also includes a filtration assembly connected to the washing tower for extracting and filtering the washing liquid in the washing tower, and the filtration assembly can also deliver the filtrate to the washing tower.

10. The sulfur tail gas treatment device according to claim 1, characterized in that, It also includes a pH adjustment component, which is connected to the washing tower and is used to introduce pH adjustment liquid into the washing tower.

Images