Claus sulfur recovery tail gas sulfur treatment device

Abstract

The invention discloses a Claus sulfur recovery tail gas sulfur treatment device, and relates to the technical field of tail gas treatment. The device comprises a multi-tube cyclone separator, a collection cavity, a first treatment cavity, a second treatment cavity and an exhaust cavity are sequentially formed in the multi-tube cyclone separator from bottom to top, a fine filter is arranged on the right side of the multi-tube cyclone separator, and a plurality of fiber coalescers are vertically arranged in the fine filter; an exhaust pipe is arranged at an outlet of the fine filter, a gas flow sensor is arranged in the exhaust pipe, a multi-stage cyclone separation assembly is arranged in the multi-pipe cyclone separator, and the multi-stage cyclone separation assembly can control the second treatment cavity to perform tail gas cyclone separation. The multi-tube cyclone separator is adopted for coarse separation, then the fiber coalescer is additionally arranged at an outlet for fine separation, the recovery efficiency of sulfur in tail gas can be improved to 99.9% or above through the synergistic effect of the multi-tube cyclone separator and the fiber coalescer, and waste caused by sulfur loss is reduced.

Description

Technical Field

[0001] This invention relates to the field of exhaust gas treatment technology, and specifically to a Claus sulfur recovery exhaust gas sulfur treatment device. Background Technology

[0002] In industrial production processes such as petroleum refining, natural gas purification, and coal chemical processing, large quantities of acidic gases containing hydrogen sulfide are generated. These gases are highly toxic and corrosive; direct emission not only seriously threatens the safety of operators but also causes severe air pollution, acid rain, and ecological damage, while also wasting valuable sulfur resources. Therefore, desulfurization of hydrogen sulfide-containing acidic gases and sulfur recovery, turning waste into treasure, is a core step in achieving clean production and resource recycling in these industrial sectors. The Claus process, as the most widely used and mature sulfur recovery technology in industry, has become the mainstream process route for sulfur recovery worldwide.

[0003] The limitations of traditional Claus processes are becoming increasingly apparent. On the one hand, even with three-stage catalytic conversion, incompletely converted sulfur-containing components remain in the Claus unit's tail gas, mainly including elemental sulfur (gaseous and mist-like), H2S, SO2, and unhydrolyzed organic sulfur (COS, CS2). Elemental sulfur exists as tiny particles or droplets; direct emission would not only fail to meet environmental protection requirements for sulfur recovery but also waste sulfur resources. Therefore, gas-liquid separation and sulfur capture are key challenges. Currently, industrial treatment of Claus sulfur recovery tail gas mainly employs technologies such as tail gas hydrogenation reduction + solvent absorption (e.g., the SCOT process), alkaline wet desulfurization, and adsorption methods. Among them, the SCOT process, as the mainstream tail gas deep treatment technology, reduces all SO2, elemental sulfur, organic sulfur and other substances in the tail gas to H2S by hydrogenation. Then, the H2S is absorbed and desorbed by MDEA amine liquid and returned to the Claus unit for recycling. However, this process has problems such as high investment cost, high operating energy consumption and complex process. In addition, the amine liquid is easily affected by impurities in the tail gas to form thermally stable salts, which reduces the absorption capacity. Summary of the Invention

[0004] The purpose of this invention is to provide a Claus sulfur recovery tail gas sulfur treatment device to solve the above problems.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: A Claus sulfur recovery tail gas sulfur treatment device includes a multi-tube cyclone separator. The multi-tube cyclone separator has a collection chamber, a first treatment chamber, a second treatment chamber, and an exhaust chamber arranged sequentially from bottom to top inside. A fine filter is arranged on the right side of the multi-tube cyclone separator. Several fiber coalescers are vertically arranged inside the fine filter. The exhaust chamber is connected to the inlet of the fine filter through a connecting pipe. An exhaust pipe is arranged at the outlet of the fine filter. A gas flow sensor is arranged inside the exhaust pipe. The multi-tube cyclone separator has a multi-stage cyclone separation component inside. The multi-stage cyclone separation component can control the second treatment chamber to perform tail gas cyclone separation. The multi-tube cyclone separator has an air inlet pipe on its left side, and both the air inlet pipe and the connecting pipe are equipped with a sleeve-type heater and a temperature sensor.

[0006] Furthermore, the multi-stage cyclone separation assembly includes a first reflective cone, a first riser pipe, a second reflective cone, and a second riser pipe. Both the first and second reflective cones are equipped with cyclone guides. The first riser pipe is installed through the cyclone guide of the first reflective cone, and the second riser pipe is installed through the cyclone guide of the second reflective cone. The first reflective cone is located between the first processing chamber and the collection chamber, and the second reflective cone is located between the second processing chamber and the first processing chamber. A movable switching sleeve is sleeved on the first riser pipe. When the switching sleeve rises, the first riser pipe is connected to the second riser pipe. When the switching sleeve descends, the first riser pipe is connected to the second processing chamber.

[0007] Furthermore, the switching sleeve is provided with a partition inside, and an outer U-shaped branch pipe is provided on the right side of the switching sleeve, which connects the space above and below the partition. A side branch pipe is provided on the left side of the switching sleeve, which is located below the outer U-shaped branch pipe. The side branch pipe is sealed and slidably inserted into the second processing chamber. A side opening is provided on the left side of the first air riser pipe. When the top of the first air riser pipe is pressed against the bottom of the partition, the side opening is connected to the side branch pipe. The top of the second air riser pipe extends into the exhaust chamber. A conical collecting hopper is provided on the outside of the switching sleeve. The conical collecting hopper is located above the outer U-shaped branch pipe and can be fitted onto the bottom of the second reflective cone. A connecting rubber sleeve is provided between the outer U-shaped branch pipe and the second reflective cone. A collecting port is provided through the outside of the switching sleeve. The collecting port is located at the bottom of the conical collecting hopper. A drain pipe is provided at the bottom of the partition. The drain pipe extends through the first air riser pipe into the collecting chamber.

[0008] Furthermore, a one-way valve is provided at the opening above the outer U-shaped branch pipe to prevent the backflow of gas and liquid above.

[0009] Furthermore, a tapered groove is provided on the top of the partition.

[0010] Furthermore, a sealing plug is provided at the bottom of the second air riser, which can be sealed and inserted into the switching sleeve.

[0011] Furthermore, a lifting hydraulic cylinder is fixedly installed on the top of the multi-tube cyclone separator, a lifting frame is provided inside the second processing chamber, and the side branch pipe is fixedly installed on the lifting frame.

[0012] Furthermore, a secondary pipe is provided at the top of the intake pipe, a three-way solenoid valve is provided at the connection between the secondary pipe and the intake pipe, and a one-way valve is provided at the top of the side branch pipe, so that the side branch pipe can only exhaust gas into the second processing chamber.

[0013] Furthermore, the bottom of both the multi-tube cyclone separator and the fine filter is conical, and the bottom is respectively provided with a main recovery pipe and a branch recovery pipe, with the branch recovery pipe connected to the main recovery pipe through a ball valve.

[0014] The beneficial effects of this invention are as follows: This invention employs a multi-tube cyclone separator for coarse separation, followed by a fiber coalescer at the outlet for fine separation. The multi-tube cyclone separator, with its parallel multi-tube design, efficiently captures larger sulfur particles (greater than 10 μm) and droplets in the exhaust gas, achieving coarse sulfur separation and removing most of the free sulfur from the exhaust gas, thus reducing the processing load on subsequent fine separation equipment. Meanwhile, the fiber coalescer utilizes the adsorption and coalescence effects of the fiber medium to precisely capture the remaining small sulfur droplets (less than 10 μm) and gaseous sulfur after coarse separation, coalescing them into larger droplets for separation and recovery. The synergistic effect of both systems can increase the sulfur recovery efficiency in the exhaust gas to over 99.9%, reducing waste caused by sulfur loss.

[0015] The present invention has a simple process, low energy consumption, and outstanding economic efficiency and practicality. Compared with the SCOT process, which has the disadvantages of high investment, complex process and high energy consumption, the combination device of multi-tube cyclone separator and fiber coalescer has a simple structure and convenient operation. It does not require a complicated hydrogenation, solvent absorption and regeneration system, and the investment cost and operating energy consumption are significantly reduced.

[0016] This invention, through the setting of a switchable multi-stage cyclone separator, can automatically adjust the number of cyclone separation stages according to changes in operating conditions. When the liquid content in the exhaust gas is high, the number of cyclone separations is increased based on the exhaust volume feedback from the exhaust pipe, preventing the fiber coalescer from clogging, improving the overall operational stability of the equipment, and achieving adaptive flow regulation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3This is a schematic diagram of the multi-stage cyclone separation component structure of the present invention; Figure 4 This is a cross-sectional structural diagram of the multi-stage cyclone separation component of the present invention; Figure 5 This is the present invention. Figure 4 Enlarged structural diagram of section A; Figure 6 This is an exploded view of the multi-stage cyclone separation component of the present invention.

[0018] Reference numerals: 1. Multi-tube cyclone separator; 11. Collection chamber; 12. First processing chamber; 13. Second processing chamber; 14. Exhaust chamber; 15. Lifting hydraulic cylinder; 16. Lifting frame; 2. Fine filter; 21. Fiber coalescer; 3. Inlet pipe; 31. Three-way solenoid valve; 32. Secondary pipe; 4. Connecting pipe; 5. Tube-type heater; 6. Exhaust pipe; 7. Main recovery pipe; 8. Branch recovery pipe; 9. Multi-stage cyclone separation assembly; 91. First reflective cone; 92. First riser pipe; 921. Side port; 93. Second reflective cone; 94. Second riser pipe; 941. Sealing plug; 95. Switching sleeve; 951. Partition plate; 952. Outer U-shaped branch pipe; 953. Conical collection hopper; 954. Collection port; 955. Drainage inner pipe; 956. Side branch pipe; 957. Connecting rubber sleeve; 96. Cyclone guide. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0020] Example 1, as Figures 1-6 As shown, a Claus sulfur recovery tail gas sulfur treatment device includes a multi-tube cyclone separator 1. The multi-tube cyclone separator 1 has a collection chamber 11, a first treatment chamber 12, a second treatment chamber 13 and an exhaust chamber 14 arranged sequentially from bottom to top inside. A fine filter 2 is arranged on the right side of the multi-tube cyclone separator 1. Several fiber coalescers 21 are vertically arranged inside the fine filter 2. The exhaust chamber 14 is connected to the inlet of the fine filter 2 through a connecting pipe 4. An exhaust pipe 6 is arranged at the outlet of the fine filter 2. A gas flow sensor is arranged inside the exhaust pipe 6. A multi-stage cyclone separation component 9 is arranged inside the multi-tube cyclone separator 1. The multi-stage cyclone separation component 9 can control the second treatment chamber 13 to perform tail gas cyclone separation. An air inlet pipe 3 is provided on the left side of the multi-tube cyclone separator 1. Both the air inlet pipe 3 and the connecting pipe 4 are equipped with a tube-type heater 5 and a temperature sensor. The bottoms of the multi-tube cyclone separator 1 and the fine filter 2 are conical, and the bottoms are respectively provided with a main recovery pipe 7 and a branch recovery pipe 8. The branch recovery pipe 8 is connected to the main recovery pipe 7 through a ball valve.

[0021] Processing flow: The exhaust gas from the Claus unit enters the first processing chamber 12 through the inlet pipe 3. The exhaust gas undergoes multi-tube cyclone dust removal in the first processing chamber 12, which can efficiently capture sulfur particles and droplets with larger particle sizes (greater than 10μm) in the exhaust gas, achieving coarse separation of sulfur, removing most of the free sulfur in the exhaust gas, and reducing the processing load of the subsequent fine separation equipment. The coarsely treated exhaust gas enters the fine filter 2 through the exhaust chamber 14 and the connecting pipe 4. The fiber agglomerator 21 in the fine filter 2 uses the adsorption and agglomeration effect of the fiber medium to accurately capture the small sulfur droplets (less than 10μm) and gaseous sulfur remaining after coarse separation, agglomerating them into larger droplets. The droplets enter the recovery branch pipe 8 under the action of gravity and are recovered, and then fine separation and recovery are achieved. The gas is discharged from the exhaust pipe 6.

[0022] When the exhaust gas contains a high liquid content, and the coarsely treated exhaust gas still contains a large amount of liquid, the gas flow rate in exhaust pipe 6 decreases to a threshold. The gas flow sensor feeds the data back to the plant's control center. Based on the feedback, the control center controls the second processing chamber 13 to participate in the processing. The exhaust gas that has passed through the first processing chamber 12 enters the second processing chamber 13 for secondary cyclone dust removal to reduce the liquid content in the coarsely treated exhaust gas, prevent blockage in subsequent fine treatment, and improve the overall processing stability of the equipment. This embodiment does not limit the specific switching method; it can be a combination of the same multi-tube cyclone separator.

[0023] This invention is not limited to two processing chambers (two are generally sufficient), but more than two can also be set. By setting up the tubular heater 5 and the temperature sensor, the exhaust gas is kept between 130-140°C. Within this temperature range, the fluidity of liquid sulfur is optimal and the safety is highest, ensuring stable collection of liquid sulfur during the filtration process.

[0024] Example 2, based on the above examples, further includes a multi-stage cyclone separation assembly 9 comprising a first reflective cone 91, a first riser pipe 92, a second reflective cone 93, and a second riser pipe 94. Both the first reflective cone 91 and the second reflective cone 93 are internally equipped with cyclone guides 96. The first riser pipe 92 is installed through the cyclone guide 96 of the first reflective cone 91, and the second riser pipe 94 is installed through the cyclone guide 96 of the second reflective cone 93. The first reflective cone 91 is located between the first processing chamber 12 and the collecting chamber 11, and the second reflective cone 93 is located between the second processing chamber 13 and the first processing chamber 12. A movable switching sleeve 95 is sleeved on the first riser pipe 92. When the switching sleeve 95 rises, the first riser pipe 92 is connected to the second riser pipe 94; when the switching sleeve 95 descends, the first riser pipe 92 is connected to the second processing chamber 13.

[0025] The switching sleeve 95 has a partition 951 inside. The right side of the switching sleeve 95 has an outer U-shaped branch pipe 952, which connects the space above and below the partition 951. The left side of the switching sleeve 95 has a side branch pipe 956, which is located below the outer U-shaped branch pipe 952. The side branch pipe 956 is sealed and slidably inserted into the second processing chamber 13. The left side of the first riser pipe 92 has a side opening 921. When the top of the first riser pipe 92 presses against the bottom of the partition 951, the side opening 921 is connected to the side branch pipe 956. The top of the second riser pipe 94 extends into the exhaust chamber 14. A conical collecting hopper 953 is provided on the outside of the switching sleeve 95. The conical collecting hopper 953 is located above the outer U-shaped branch pipe 952 and can be sleeved on the bottom of the second reflective cone 93. A connecting rubber sleeve 957 is provided between the outer U-shaped branch pipe 952 and the second reflective cone 93. A collecting port 954 is provided through the outside of the switching sleeve 95. The collecting port 954 is located at the bottom of the conical collecting hopper 953. A drain pipe 955 is provided at the bottom of the partition 951. The drain pipe 955 passes through the first air riser pipe 92 and extends into the collecting chamber 11.

[0026] A one-way valve is installed at the opening above the external U-shaped branch pipe 952 to prevent the backflow of gas and liquid above.

[0027] The top of the partition 951 is provided with a conical groove to facilitate the return of liquid to the drain inner pipe 955.

[0028] The bottom of the second air vent 94 is provided with a sealing plug 941, which can be sealed and inserted into the switching sleeve 95 to improve the connection sealing.

[0029] A lifting hydraulic cylinder 15 is fixedly installed on the top of the multi-tube cyclone separator 1, and a lifting frame 16 is provided inside the second processing chamber 13. The side branch pipe 956 is fixedly installed on the lifting frame 16.

[0030] First-stage cyclone separation: The lifting frame 16 is raised by the lifting hydraulic cylinder 15. The lifting frame 16 drives the side branch pipe 956 to rise, and the side branch pipe 956 drives the switching sleeve 95 to rise. The top of the switching sleeve 95 is sealed and inserted into the sealing plug 941, and the conical collection hopper 953 is attached to the bottom of the second reflective cone 93. The second reflective cone 93 blocks the collection port 954. At the same time, the bottom of the side branch pipe 956 is away from the side port 921, and the side branch pipe 956 is blocked by the first air lifting pipe 92. Figure 5As shown in the diagram, the exhaust gas from the Claus device enters the first processing chamber 12 through the inlet pipe 3. Under the action of the cyclone guide 96, the exhaust gas spirals into the first reflective cone 91, and then enters the first riser pipe 92 under the conical reflection at the bottom of the first reflective cone 91. It rises along the first riser pipe 92, and the separated liquid flows into the collection chamber 11. The exhaust gas enters the second riser pipe 94 through the outer U-shaped branch pipe 952, and then directly enters the exhaust chamber 14 through the second riser pipe 94. It then enters the fine filter 2 through the exhaust chamber 14 and the connecting pipe 4, and finally exits from the exhaust pipe 6.

[0031] Secondary cyclone separation: The lifting frame 16 is lowered by the lifting hydraulic cylinder 15. The lifting frame 16 drives the side branch pipe 956 to descend. The side branch pipe 956 drives the switching sleeve 95 to descend. The top of the switching sleeve 95 is away from the sealing plug 941. The conical collection hopper 953 is away from the second reflective cone 93. The connecting rubber sleeve 957 (made of fluororubber, with high acid resistance and sulfur swelling resistance, and a temperature range of -20-200℃) is stretched. At the same time, the partition 951 descends to make close contact with the top of the first air lifting pipe 92. The bottom of the outer U-shaped branch pipe 952 is blocked by the first air lifting pipe 92. The side opening 921 is connected to the side branch pipe 956. The exhaust gas from the Claus device enters the first processing chamber 12 through the inlet pipe 3. Under the action of the cyclone guide 96, the exhaust gas spirals into the first reflective cone 91, and then, under the conical reflection at the bottom of the first reflective cone 91, enters the first riser pipe 92. Rising along the first riser pipe 92, the exhaust gas enters the second processing chamber 13 through the side port 921 and the side branch pipe 956. Under the action of the cyclone guide 96, the exhaust gas spirals into the second reflective cone 93, and then, under the conical reflection at the bottom of the second reflective cone 93, enters the second riser pipe 94. In the middle, it rises along the second riser pipe 94. Under the connection rubber sleeve 957, the exhaust gas will not re-enter the first treatment chamber 12. The first treatment chamber 12 and the second treatment chamber 13 are completely isolated. The separated liquid enters the space above the partition 951 through the conical collection hopper 953 and the collection port 954, and then is directly discharged into the collection chamber 11 through the drain inner pipe 955. The exhaust gas enters the exhaust chamber 14 through the second riser pipe 94, and then enters the fine filter 2 through the exhaust chamber 14 and the connecting pipe 4, and finally is discharged from the exhaust pipe 6.

[0032] This invention employs a special multi-stage cyclone separator component 9, which not only achieves multi-stage processing control, but also addresses the issue that, due to the high melting point of liquid sulfur, the exhaust gas needs to be maintained between 130-140°C to ensure stable flow and prevent crystallization. If a simple multi-stage combination is used, even the non-operating separator requires a separate heating system to maintain internal temperature stability, requiring continuous heating regardless of operation. Otherwise, severe internal crystallization and blockage will occur. Furthermore, preheating is required during use, resulting in high energy consumption and long connection times. Therefore, this invention, through integrated design, ensures that the heated exhaust gas always passes through the multi-stage cyclone separator component 9, maintaining a constant overall temperature. The internal gas guiding and liquid draining pipes are always kept within a controllable temperature range, preventing liquid crystallization and blockage. No separate additional heating system is needed; it can be used directly upon switching, saving energy and offering high switching efficiency.

[0033] In embodiment three, based on the above embodiments, a secondary pipe 32 is provided at the top of the intake pipe 3, a three-way solenoid valve 31 is provided at the connection between the secondary pipe 32 and the intake pipe 3, and a one-way valve is provided at the top of the side branch pipe 956, so that the side branch pipe 956 can only exhaust to the second processing chamber 13.

[0034] With the configuration of this embodiment, if the first processing chamber 12 needs maintenance, the auxiliary pipe 32 is allowed to enter through the three-way solenoid valve 31, and the exhaust gas directly enters the second processing chamber 13 for processing (the multi-stage cyclone separator 9 is in a secondary processing state). At this time, maintenance can be carried out without stopping the machine.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A Claus sulfur recovery tail gas sulfur treatment device, comprising a multi-tube cyclone separator (1), characterized in that, The multi-tube cyclone separator (1) has a collection chamber (11), a first processing chamber (12), a second processing chamber (13) and an exhaust chamber (14) arranged sequentially from bottom to top inside. A fine filter (2) is arranged on the right side of the multi-tube cyclone separator (1). Several fiber coalescers (21) are vertically arranged inside the fine filter (2). The exhaust chamber (14) is connected to the inlet of the fine filter (2) through a connecting pipe (4). An exhaust pipe (6) is arranged at the outlet of the fine filter (2). A gas flow sensor is arranged inside the exhaust pipe (6). A multi-stage cyclone separation component (9) is arranged inside the multi-tube cyclone separator (1). The multi-stage cyclone separation component (9) can control the second processing chamber (13) to perform tail gas cyclone separation. The multi-tube cyclone separator (1) has an air inlet pipe (3) on its left side. Both the air inlet pipe (3) and the connecting pipe (4) are equipped with a tube-type heater (5) and a temperature sensor.

2. The Claus sulfur recovery tail gas sulfur treatment device according to claim 1, characterized in that, The multi-stage cyclone separator assembly (9) includes a first reflective cone (91), a first riser pipe (92), a second reflective cone (93), and a second riser pipe (94). Both the first reflective cone (91) and the second reflective cone (93) are equipped with cyclone guides (96). The first riser pipe (92) is installed through the cyclone guide (96) of the first reflective cone (91), and the second riser pipe (94) is installed through the cyclone guide (96) of the second reflective cone (93). A reflective cone (91) is disposed between the first processing chamber (12) and the collection chamber (11), and a second reflective cone (93) is disposed between the second processing chamber (13) and the first processing chamber (12). A switching sleeve (95) capable of being raised and lowered is sleeved on the first air riser (92). When the switching sleeve (95) rises, the first air riser (92) is connected to the second air riser (94). When the switching sleeve (95) falls, the first air riser (92) is connected to the second processing chamber (13).

3. The Claus sulfur recovery tail gas sulfur treatment device according to claim 2, characterized in that, The switching sleeve (95) is provided with a partition (951) inside. An outer U-shaped branch pipe (952) is provided on the right side of the switching sleeve (95). The outer U-shaped branch pipe (952) connects the space above and below the partition (951). A side branch pipe (956) is provided on the left side of the switching sleeve (95). The side branch pipe (956) is located below the outer U-shaped branch pipe (952). The side branch pipe (956) is sealed and slidably inserted into the second processing chamber (13). A side opening (921) is provided on the left side of the first riser pipe (92). When the top of the first riser pipe (92) is pressed against the bottom of the partition (951), the side opening (921) is connected to the side branch pipe (956). The top of the second riser pipe (94) extends into the exhaust chamber (14). A conical collecting hopper (953) is provided on the outside of the switching sleeve (95). The conical collecting hopper (953) is located above the outer U-shaped branch pipe (952) and can be sleeved on the bottom of the second reflective cone (93). A connecting rubber sleeve (957) is provided between the outer U-shaped branch pipe (952) and the second reflective cone (93). A collecting port (954) is provided through the outside of the switching sleeve (95). The collecting port (954) is located at the bottom of the conical collecting hopper (953). A drain pipe (955) is provided at the bottom of the partition (951). The drain pipe (955) extends through the first air riser pipe (92) into the collecting chamber (11).

4. The Claus sulfur recovery tail gas sulfur treatment device according to claim 3, characterized in that, A one-way valve is provided at the opening above the outer U-shaped branch pipe (952) to prevent the backflow of gas and liquid above.

5. A Claus sulfur recovery tail gas sulfur treatment device according to claim 4, characterized in that, The top of the partition (951) is provided with a conical groove.

6. A Claus sulfur recovery tail gas sulfur treatment device according to claim 5, characterized in that, The bottom of the second riser pipe (94) is provided with a sealing plug (941), which can be sealed and inserted into the switching sleeve (95).

7. A Claus sulfur recovery tail gas sulfur treatment device according to claim 6, characterized in that, The top of the multi-tube cyclone separator (1) is fixedly installed with a lifting hydraulic cylinder (15), and the interior of the second processing chamber (13) is provided with a lifting frame (16). The side branch pipe (956) is fixedly installed on the lifting frame (16).

8. A Claus sulfur recovery tail gas sulfur treatment device according to claim 7, characterized in that, The top of the intake pipe (3) is provided with a secondary pipe (32), and a three-way solenoid valve (31) is provided at the connection between the secondary pipe (32) and the intake pipe (3). A one-way valve is provided at the top of the side branch pipe (956).

9. A Claus sulfur recovery tail gas sulfur treatment device according to claim 8, characterized in that, The bottom of the multi-tube cyclone separator (1) and the fine filter (2) are both conical, and the bottom is provided with a recovery main pipe (7) and a recovery branch pipe (8), respectively. The recovery branch pipe (8) is connected to the recovery main pipe (7) through a ball valve.

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