Reactor for preparing sulfur by absorbing hydrogen sulfide

Abstract

A reactor for preparing sulfur by absorbing hydrogen sulfide belongs to the technical field of sulfur preparation equipment. Comprising a reactor body, a reaction tank and a cyclone distributor, the reaction tank and the cyclone distributor are arranged in the reactor body, the reaction tank is arranged in the reactor body, a fresh liquid input pipe and an acid gas input pipe are further arranged in the reactor body, and the input end of the fresh liquid input pipe and the input end of the acid gas input pipe both extend out of the reactor body. The output ends of the fresh liquid input pipe and the acid gas input pipe extend into the reaction tank, and the cyclone distributor is arranged in the output end of the fresh liquid input pipe. According to the reactor for preparing sulfur by absorbing hydrogen sulfide, fresh absorption liquid is spirally injected into the reaction tank in a rotational flow manner, so that the absorption liquid can be fully mixed with acidic gas containing hydrogen sulfide, the acidic gas containing hydrogen sulfide is ensured to be fully contacted with the absorption liquid, the reaction speed is high, the production speed of sulfur is high, and the production efficiency is high. And the subsequent hydrogen production speed is also improved.

Description

Technical Field

[0001] The invention discloses a sulfur production reactor by absorbing hydrogen sulfide, belonging to the technical field of sulfur production equipment. Background Art

[0002] Hydrogen sulfide (H2S) is a highly toxic and polluting gas, abundantly produced in natural gas extraction and energy-related industrial production processes. It's reported that natural gas containing H2S accounts for 25% of my country's total gas reserves. The H2S content in high-H2S gas fields ranges from 2% to 70%, with some fields exceeding 90%. Currently, the Claus process is the primary method used by industry to treat H2S-containing gas. The Claus process uses oxygen as a source and oxidizes H2S in a two-step process to produce elemental sulfur and water. During combustion, the hydrogen in the H2S combines with oxygen and is emitted as water, resulting in the unutilized hydrogen energy. There is an urgent need for new technologies that can treat H2S to meet industrial production needs and address environmental concerns, while also enabling the conversion of H2S into high-purity hydrogen.

[0003] Chinese invention patent application CN108342743A discloses a method and apparatus for producing high-purity hydrogen and sulfur by electrolyzing hydrogen sulfide. Acidic gas containing hydrogen sulfide reacts with an absorption liquid in an absorption reactor to produce sulfur. The sulfur enters a sulfur slurry storage tank and then enters a sulfur melting and refining tank for melting and purification to obtain high-purity sulfur. The filtrate obtained by filtering the clear liquid after the reaction enters the anode of the electrolysis reactor for regeneration and reuse, while the cathode generates high-purity hydrogen.

[0004] However, during the production process, the reaction rate of the hydrogen sulfide-containing acidic gas and the absorption liquid takes precedence, which leads to low production efficiency. The inventors found that this is mainly due to the inability of the hydrogen sulfide-containing acidic gas to fully contact the absorption liquid. The existing reactor cannot fully contact the gas phase medium and the liquid phase medium, resulting in a slow reaction rate, which in turn affects the processing speed of the hydrogen sulfide-containing acidic gas, and thus also affects the speed of sulfur production and the production speed of hydrogen. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a hydrogen sulfide absorption sulfur production reactor which can ensure that the acidic gas containing hydrogen sulfide is fully in contact with the fresh absorption liquid, ensure that the acidic gas containing hydrogen sulfide and the fresh absorption liquid are fully mixed, and has a fast reaction speed.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: the hydrogen sulfide absorption sulfur production reactor includes a reactor body, a reaction tank and a cyclone distributor arranged in the reactor body, the reaction tank is arranged in the reactor body, and a fresh liquid input pipe and an acid gas input pipe are also arranged in the reactor body, the input end of the fresh liquid input pipe and the input end of the acid gas input pipe both extend out of the reactor body, the output ends of the fresh liquid input pipe and the acid gas input pipe both extend into the reaction tank, and the cyclone distributor is arranged in the output end of the fresh liquid input pipe.

[0007] Preferably, the acid gas input pipe is arranged in the fresh liquid input pipe, the acid gas input pipe and the fresh liquid input pipe are spaced apart, the upper end of the fresh liquid input pipe is closed, the upper end of the acid gas input pipe passes through the closed end of the fresh liquid input pipe and extends out, and an acid gas inlet is formed at the upper end of the acid gas input pipe, a fresh liquid inlet is provided on the side of the fresh liquid input pipe, and a swirl distributor is provided between the acid gas input pipe and the fresh liquid input pipe.

[0008] Preferably, the swirl distributor comprises a plurality of blades spaced apart around the outer wall of the acid gas inlet pipe, the blades being inclined so as to form a swirl in the fresh liquid flowing out of the fresh liquid inlet pipe.

[0009] Preferably, a purified gas outlet is provided at the top of the reactor body, a liquid sulfur outlet is provided at the bottom of the reactor body, and a reaction liquid outlet is provided at the side of the reactor body, and the reaction liquid outlet is provided higher than the reaction tank.

[0010] Preferably, an overflow baffle is provided on the inner wall of the reactor body, the bottom and sides of the overflow baffle are bent toward the inner wall of the reactor body and fixedly connected to the inner wall of the reactor, forming an overflow cavity with an upward opening, and the reaction liquid outlet is connected to the overflow cavity.

[0011] Preferably, the reactor body includes a cylinder, a top cylinder cover and a conical head. The upper and lower ends of the cylinder are open. The top cylinder cover is detachably connected to the top of the cylinder and closes the top of the cylinder. The conical head is arranged on the lower side of the cylinder and fixedly connected to the bottom of the cylinder. The diameter of the conical head gradually decreases in the direction away from the cylinder.

[0012] Preferably, a jacket shell is provided on the outer cover of the conical head, and a jacket is formed between the jacket shell and the conical head.

[0013] Preferably, a second thermometer port is provided at the upper portion of the reactor body, and a second thermometer port is provided at the lower portion of the reactor body.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the hydrogen sulfide absorption sulfur production reactor, the acidic gas containing hydrogen sulfide enters the reaction tank through the acidic gas inlet pipe, and the absorption liquid is fed into the reaction tank through the fresh liquid inlet pipe. Since a swirl distributor is provided at the end of the fresh liquid inlet pipe, the fresh absorption liquid is swirled into the reaction tank in a swirl manner, thereby being fully mixed with the acidic gas containing hydrogen sulfide, ensuring that the acidic gas containing hydrogen sulfide is in full contact with the absorption liquid, and the reaction speed is fast, thereby accelerating the production speed of sulfur and also improving the subsequent production speed of hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main cross-section of a hydrogen sulfide absorption sulfur production reactor;

[0017] Figure 2 It is a schematic diagram of the main cross-section of the fresh liquid inlet pipe, the acid gas inlet pipe and the swirl distributor in their combined state;

[0018] Figure 3 It is a top-view cross-sectional schematic diagram of the combined state of the fresh liquid inlet pipe, the acid gas inlet pipe and the swirl distributor.

[0019] In the figure: 1. Acid gas inlet; 2. Fresh liquid inlet; 3. Top cylinder cover; 4. Cylinder body; 5. Liquid level gauge port; 6. Fresh liquid inlet pipe; 7. Acid gas inlet pipe; 8. Cyclone distributor; 9. Heating medium inlet; 10. First thermometer port; 11. Conical head; 12. Jacketed shell; 13. Liquid sulfur outlet; 14. Heating medium outlet; 15. Reaction liquid outlet; 16. Overflow baffle; 17. Second thermometer port; 18. Purified gas outlet; 19. Reaction tank. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention must go beyond these limited embodiments. For some equivalent replacement solutions or common means, they will not be described in detail herein, but they still fall within the scope of protection of this application.

[0021] Figures 1-3 This is the best embodiment of the present invention, Figures 1-3 The utility model is further described.

[0022] The hydrogen sulfide absorption sulfur production reactor includes a reactor body, a reaction tank 19 and a cyclone distributor 8 arranged in the reactor body. The reaction tank 19 is arranged in the reactor body. A fresh liquid input pipe 6 and an acid gas input pipe 7 are also arranged in the reactor body. The input end of the fresh liquid input pipe 6 and the input end of the acid gas input pipe 7 both extend out of the reactor body, and the output ends of the fresh liquid input pipe 6 and the acid gas input pipe 7 both extend into the reaction tank 19. The cyclone distributor 8 is arranged in the output end of the fresh liquid input pipe 6. In this hydrogen sulfide absorption sulfur production reactor, the acidic gas containing hydrogen sulfide enters the reaction tank 19 through the acidic gas inlet pipe 7, and the absorption liquid is fed into the reaction tank 19 through the fresh liquid inlet pipe 6. Since a swirl distributor 8 is provided at the end of the fresh liquid inlet pipe 6, the fresh absorption liquid is swirled into the reaction tank 19 in a swirl manner, thereby being fully mixed with the acidic gas containing hydrogen sulfide, ensuring that the acidic gas containing hydrogen sulfide is in full contact with the absorption liquid, and the reaction speed is fast, thereby accelerating the production speed of sulfur and also improving the subsequent production speed of hydrogen.

[0023] For details, please refer to the attached Figure 1-3 The reactor body includes a cylinder 4, a top cylinder cover 3, and a conical head 11. The cylinder 4 is a cylinder with both ends open. The top cylinder cover 3 is disc-shaped and is arranged on the upper side of the cylinder 4. The top cylinder cover 3 is detachably connected to the cylinder 4 and seals the upper opening of the cylinder 4. The conical head 11 is arranged on the lower side of the cylinder 4 and is fixedly connected to the cylinder 4. The diameter of the conical head 11 gradually decreases from top to bottom.

[0024] A jacket shell 12 is provided at the lower part of the cylinder 4 and the outer cover of the conical head 11. The upper part of the jacket shell 12 is sealed with the outer wall of the body 4, and the lower part of the jacket shell 12 is fixedly connected to the outer wall of the conical head 11. A jacket is formed inside the jacket shell 12 to facilitate heating of the sulfur at the lower part of the reactor body through the jacket so that it can flow out smoothly.

[0025] A heating medium inlet 9 is provided at the upper portion of the jacket shell 12 , and a heating medium outlet 14 is provided at the lower portion of the jacket shell 12 , so that the reactor body can be heated by the circulating heating medium.

[0026] A reaction tank 19 is disposed within the reactor body. The reaction tank 19 is a cylindrical, bottom-closed structure. The reaction tank 19 is disposed higher than the jacket housing 12. A fresh liquid inlet pipe 6 is disposed vertically, with the lower end of the fresh liquid inlet pipe 6 extending into the reaction tank 19. The bottom end of the fresh liquid inlet pipe 6 is spaced apart from the closed end of the reaction tank 19 to facilitate entry of the absorption liquid into the reaction tank 19. The upper end of the fresh liquid inlet pipe 6 extends upward through the top cylinder cover 3 and extends upward. The upper end of the fresh liquid inlet pipe 6 is sealed by a blind plate. A fresh liquid inlet 2 is disposed on the side of the fresh liquid inlet pipe 6. The fresh liquid inlet 2 is disposed on the upper side of the top cylinder cover 3 to facilitate entry of fresh absorption liquid into the reaction tank 19.

[0027] The acid gas inlet pipe 7 is arranged vertically and is arranged inside the fresh liquid inlet pipe 6. The acid gas inlet pipe 7 and the fresh liquid inlet pipe 6 are spaced apart. The lower end of the acid gas inlet pipe 7 is flush with the lower end of the fresh liquid inlet pipe 6. The upper end of the acid gas inlet pipe 7 passes through the blind plate at the upper end of the fresh liquid inlet pipe 6 and extends upward, and forms an acid gas inlet 1 at the upper end of the acid gas inlet pipe 7.

[0028] A swirl distributor 8 is disposed between the input end of the fresh liquid inlet pipe 6 and the acid gas inlet pipe 7. The swirl distributor 8 comprises a plurality of blades evenly spaced around the acid gas inlet pipe 7. The blades are tilted so that the absorption liquid forms a swirl through the blades and enters the reaction tank 19. The absorption liquid then flows between the fresh liquid inlet pipe 6 and the acid gas inlet pipe 7 and enters the reaction tank 19.

[0029] A purified gas outlet 18 is provided on the top cover 3, and a reaction liquid outlet 15 is provided on the side of the cylinder 4, which is higher than the reaction tank 19. A second thermometer port 17 is provided on one side of the top of the cylinder 4, and a first thermometer port 10 is provided on the bottom of the cylinder 4. The first thermometer port 10 and the second thermometer port 17 are both equipped with thermometers to measure the temperature of the upper and lower parts of the cylinder 4, respectively.

[0030] A liquid sulfur outlet 13 is provided at the bottom of the conical head 11 for delivering the sulfur generated by the reaction.

[0031] An overflow baffle 16 is also provided in the cylinder 4. The overflow baffle 16 is arranged vertically and is arranged opposite to the reaction liquid outlet 15. The bottom and both sides of the overflow baffle 16 are bent toward the direction close to the reaction liquid outlet 15 and are fixedly connected to the inner wall of the cylinder 4 to form an overflow cavity with an open top. The reaction liquid outlet 15 is connected to the overflow cavity.

[0032] During the reaction, a liquid level higher than the reaction liquid outlet 15 is established, and then the reaction liquid outlet 15 is opened to prevent the purified gas from being discharged through the reaction liquid outlet 15 .

[0033] The working process of this hydrogen sulfide absorption sulfur production reactor is as follows: acid gas enters from the top acid gas inlet 1, flows downward through the acid gas inlet pipe 7, is distributed by the cyclone distributor 8, mixes with the absorption liquid and flows out; absorption liquid enters from the top fresh liquid inlet 2, flows downward through the fresh liquid inlet pipe 6 to the cyclone distributor 8, mixes with the acid gas and flows out. The acid gas and fresh liquid mix and react at the bottom of the reactor to produce elemental sulfur and hydrogen ions.

[0034] The swirl distributor 8 allows the acid gas and the absorption liquid to swirl into the reaction tank 19 in a swirl manner for full reaction, playing the role of air flow stirring, which not only enables the reactants to be mixed faster, but also accelerates the heat transfer between the jacket and the medium in the reactor body, effectively avoiding the problem of uneven temperature at the bottom of the reactor body and liquid sulfur solidification and blockage.

[0035] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation thereto. Any person skilled in the art may utilize the above disclosure to modify or remodel the present invention into equivalent embodiments. However, any simple modification, equivalent variation, or modification of the above embodiment that does not depart from the technical content of the present invention and is based on the technical essence of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. A hydrogen sulfide absorption sulfur production reactor, characterized by: The invention comprises a reactor body, a reaction tank (19) and a cyclone distributor (8) arranged in the reactor body. The reaction tank (19) is arranged in the reactor body. A fresh liquid input pipe (6) and an acid gas input pipe (7) are also arranged in the reactor body. The input end of the fresh liquid input pipe (6) and the input end of the acid gas input pipe (7) both extend out of the reactor body. The output ends of the fresh liquid input pipe (6) and the acid gas input pipe (7) both extend into the reaction tank (19). The cyclone distributor (8) is arranged in the output end of the fresh liquid input pipe (6).

2. The hydrogen sulfide absorption sulfur production reactor according to claim 1, characterized in that: The acid gas input pipe (7) is arranged in the fresh liquid input pipe (6), the acid gas input pipe (7) and the fresh liquid input pipe (6) are spaced apart, the upper end of the fresh liquid input pipe (6) is closed, the upper end of the acid gas input pipe (7) passes through the closed end of the fresh liquid input pipe (6) and extends out, and an acid gas inlet (1) is formed at the upper end of the acid gas input pipe (7), a fresh liquid inlet (2) is provided on the side of the fresh liquid input pipe (6), and a cyclone distributor (8) is provided between the acid gas input pipe (7) and the fresh liquid input pipe (6).

3. The hydrogen sulfide absorption sulfur production reactor according to claim 2, characterized in that: The swirl distributor (8) comprises a plurality of blades arranged at intervals around the outer wall of the acid gas inlet pipe (7), and the blades are inclined so as to form a swirl of the fresh liquid flowing out of the fresh liquid inlet pipe (6).

4. The hydrogen sulfide absorption sulfur production reactor according to claim 1, characterized in that: A purified gas outlet (18) is provided at the top of the reactor body, a liquid sulfur outlet (13) is provided at the bottom of the reactor body, and a reaction liquid outlet (15) is provided at the side of the reactor body (1). The reaction liquid outlet (15) is provided above the reaction tank (19).

5. The hydrogen sulfide absorption sulfur production reactor according to claim 4, characterized in that: An overflow baffle (16) is provided on the inner wall of the reactor body. The bottom and side of the overflow baffle (16) are bent toward the inner wall of the reactor body and fixedly connected to the inner wall of the reactor, forming an overflow cavity with an upward opening. The reaction liquid outlet (15) is connected to the overflow cavity.

6. The hydrogen sulfide absorption sulfur production reactor according to claim 1, characterized in that: The reactor body comprises a cylinder (4), a top cylinder cover (3) and a conical head (11). The upper and lower ends of the cylinder (4) are both open. The top cylinder cover (3) is detachably connected to the top of the cylinder (4) and closes the top of the cylinder (4). The conical head (11) is arranged on the lower side of the cylinder (4) and is fixedly connected to the bottom of the cylinder (4). The diameter of the conical head (11) gradually decreases in the direction away from the cylinder (4).

7. The hydrogen sulfide absorption sulfur production reactor according to claim 6, characterized in that: A jacket shell (12) is provided on the outer cover of the conical head (11), and a jacket is formed between the jacket shell (12) and the conical head (11).

8. The hydrogen sulfide absorption sulfur production reactor according to claim 1, characterized in that: A second thermometer port (17) is provided on the upper portion of the reactor body, and a second thermometer port (10) is provided on the lower portion of the reactor body.

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