A plasma processing apparatus for a hydrogen-containing gas

Abstract

The application discloses a kind of hydrogen-containing gas plasma processing equipment, belong to chemical technology field, including pyrogenic hydrogen and solid carbon processing mechanism, the pyrogenic hydrogen and solid carbon processing mechanism includes first plasma torch, the first plasma chemical reactor is connected to first plasma torch, the first plasma chemical reactor is connected with carbon dioxide separator, the carbon dioxide separator is connected with first gas flow separator.It also includes hydrogen sulfide pyrolysis mechanism, the hydrogen sulfide pyrolysis mechanism includes second plasma torch, the second plasma torch is connected with second plasma chemical reactor, when guide air cylinder or restraint frame is aged, seal cover is removed, and then the restraint frame and guide air cylinder are taken out, replace restraint frame or guide air cylinder, then the new restraint frame and guide air cylinder are reset, and then the seal cover is covered on the shell, to facilitate replacement guide air cylinder or restraint frame.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of chemical technology, and particularly relates to a hydrogen-containing gas plasma processing device. BACKGROUND

[0002] The existing US20230294986 discloses a device for obtaining gaseous hydrogen from hydrocarbon gas, and the heat exchanger provides heat exchange between the unheated hydrocarbon gas flow and the heated gas leaving the device, thereby improving the efficiency of the device. The existing US20170349758A1 proposes a method for obtaining carbon black from hydrocarbons, after introducing the raw material, mixing and expanding to divert the flow from the furnace wall, recycling the fully formed carbon black, and preventing the formed product from reaching the reactor wall. The carbon black obtained by this process is claimed. The patent WO2022023287A1 proposes a technical process for obtaining hydrogen-containing gas and a single solution for the key equipment level that allows the optimization of this process, the device is configured in such a way that the inlet hydrocarbon gas cracking operation is carried out without changing the temperature. The plasma gas is a mixture containing hydrogen and / or hydrocarbons, wherein the device comprises a separator downstream of the reactor, which is configured to ensure the separation of the gas mixture at the outlet of the reactor into an outlet gas and a solid carbon product, and a part of the outlet gas is re-injected into the carrier gas. It is possible to take advantage of the pipe pressure of the raw material supply, heat recovery, and provide an electrode supply to increase the service life of the used plasma generator.

[0003] The above patents propose methods and devices in which only the plasma pyrolysis technology of hydrocarbons (methane, natural gas) is considered possible for the production of hydrogen and solid carbon materials, and in various solutions, these processes aim to obtain one target claimed product of hydrogen or solid carbon. The proposed devices and methods do not fundamentally cover other hydrogen-containing substances such as ammonia and hydrogen sulfide as raw materials. The proposed solutions are not suitable for other types of raw materials for the production of other target products. In the proposed solutions, the plasma formation gas is first heated and then enters the plasma chemical reactor, and the raw material is fed separately through the supply system, which greatly complicates the design of the plasma reactor and shortens the time of its trouble-free operation. In addition, the conversion rate of the raw material and the energy efficiency of the process are still at a relatively low level. Thus, the problem of low yield of the existing hydrogen-containing gas mixture plasma processing device is caused.

[0004] To this end, we propose a hydrogen-containing gas plasma processing device to solve the above problems. SUMMARY

[0005] The purpose of the present application is to solve the problem of low yield of the existing hydrogen-containing gas mixture plasma processing device, and a hydrogen-containing gas plasma processing device is proposed.

[0006] To achieve the above object, the present application adopts the following technical solutions:

[0007] A hydrogen-containing gas plasma processing device, comprising a pyrolysis hydrogen generation and solid carbon processing mechanism, the pyrolysis hydrogen generation and solid carbon processing mechanism comprising a first plasma torch, the first plasma torch being connected with a first plasma chemical reactor, the first plasma chemical reactor being connected with a solid carbon separator, the solid carbon separator being connected with a first gas flow separator.

[0008] Preferably, further comprising a hydrogen sulfide pyrolysis mechanism, the hydrogen sulfide pyrolysis mechanism comprising a second plasma torch, the second plasma torch being connected with a second plasma chemical reactor, the second plasma chemical reactor being connected with a sulfur water separator, the sulfur water separator being connected with a second gas flow separator.

[0009] Preferably, further comprising an ammonia pyrolysis mechanism, the ammonia pyrolysis mechanism comprising a plasma torch, the plasma torch being connected with a third plasma chemical reactor, the third plasma chemical reactor being connected with an ammonia water separator, the ammonia water separator being connected with a third gas flow separator, the third gas flow separator being connected with an absorber.

[0010] Preferably, further comprising a plasma carbon dioxide reforming mechanism, the plasma carbon dioxide reforming mechanism comprising a third plasma torch, the third plasma torch being connected with a fourth plasma chemical reactor, the fourth plasma chemical reactor being connected with a fourth gas flow separator, the fourth gas flow separator being connected with a gas flow cooler.

[0011] Preferably, the first gas flow separator comprises a shell, the upper part of the shell being embedded with a constraint frame, the inside of the constraint frame being inserted with a gas guide cylinder, the upper part of the shell being covered with a sealing cover, the lower part of the shell being installed with a drain valve, the upper part of the constraint frame being sealed between the shell and the sealing cover, the first gas flow separator, the second gas flow separator, the third gas flow separator and the fourth gas flow separator being the same in structure. When the gas guide cylinder or the constraint frame is aged, the sealing cover is removed, the constraint frame and the gas guide cylinder are taken out, the constraint frame or the gas guide cylinder is replaced, then the new constraint frame and the gas guide cylinder are reset, and the sealing cover is covered on the shell, so that the gas guide cylinder or the constraint frame is conveniently replaced.

[0012] Preferably, the shell comprises a first flange, the lower end of the first flange being fixedly connected with a shell body, the upper part of the shell body being fixedly connected with an exhaust nozzle, the end of the shell body away from the exhaust nozzle being fixedly connected with an air inlet nozzle. The gas enters the shell body through the air inlet nozzle, spirally descends along the shell body, then rises through the gas guide cylinder and is discharged through the exhaust nozzle, so that the gas flow spirally passes through the shell body.

[0013] Preferably, the constraint frame comprises a first sealing ring, a lower end of the first sealing ring is fixedly connected with a first isolation plate, a lower end of the first isolation plate is fixedly connected with a second isolation plate, the first sealing ring is sealed on the first flange, and the first isolation plate and the second isolation plate are inserted into the upper portion of the shell. The first sealing ring, the first isolation plate and the second isolation plate are used to block between the gas guide cylinder and the shell, so that the gas can be spiraled downward and then discharged through the gas guide cylinder, and the gas is conveniently isolated.

[0014] Preferably, the gas guide cylinder comprises a gas guide pipe, an upper portion of the gas guide pipe is inserted into the first sealing ring, the first isolation plate and the second isolation plate, a sealing baffle is fixedly connected to the upper portion of the gas guide pipe, a guide column is fixedly connected to the upper end of the gas guide pipe, a sliding sleeve and a spring are sleeved on the guide column, the lower end of the sliding sleeve is fixedly connected with the upper end of the spring, the lower end of the spring is fixedly connected with the gas guide pipe, an insertion block is further fixedly connected to the upper portion of the gas guide pipe, the sealing baffle is blocked outside the first isolation plate, the gas guide pipe is inserted into the first isolation plate and the second isolation plate, and the insertion block is inserted into the first sealing ring. The sealing cover is used to press down the sliding sleeve, the sliding sleeve is used to downwardly act on the spring, the spring is used to downwardly act on the gas guide pipe, the gas guide pipe is stably arranged in the constraint frame, and the stability of the constraint frame and the gas guide cylinder is conveniently maintained.

[0015] Preferably, the sealing cover comprises a lifting ring, a lower end of the lifting ring is fixedly connected with a cover body, and a lower portion of the cover body is fixedly connected with a second flange. The lifting ring is hoisted upward by means of hoisting equipment, the cover body is acted on by the lifting ring, the second flange is acted on by the cover body, and the sealing cover is conveniently hoisted by means of the hoisting equipment.

[0016] Preferably, the drain valve comprises a siphon pipe, the lower portion of the siphon pipe is inserted into the lower portion of the shell, a second sealing ring is fixedly connected to the lower portion of the siphon pipe, a nut is threadedly installed on the lower portion of the siphon pipe, the upper end of the nut is pressed on the lower end of the shell, a blocking block is fixedly connected to the outside of the second sealing ring, a limiting block is arranged on the outside of the second sealing ring, and the limiting block is fixedly connected with the bottom of the shell, a sealing cover is slidably sleeved on the upper portion of the siphon pipe, a floating ring is fixedly connected to the outside of the sealing cover, and a limiting rope is connected between the siphon pipe and the floating ring. The limiting rope is used to pull the floating ring, the floating ring is used to act on the sealing cover, the sealing cover is prevented from continuing to slide downward, the sealing cover is maintained on the siphon pipe, the sealing cover is used to block the bottom of the shell, gas is prevented from being discharged through the siphon pipe when the shell is empty, the floating ring is pulled away from the sealing cover by using the buoyancy to act on the floating ring when the liquid level in the shell is raised, liquid is discharged through the siphon pipe when the liquid level submerges the siphon pipe, the liquid is emptied by using the siphon principle, and automatic drainage is facilitated.

[0017] In conclusion, the present application has the following technical effects and advantages:

[0018] 1. When the gas guide cylinder or the restraint frame is aged, the sealing cover is removed, the restraint frame and the gas guide cylinder are taken out, the restraint frame or the gas guide cylinder is replaced, then the new restraint frame and the gas guide cylinder are reset, and the sealing cover is covered on the shell, so that the gas guide cylinder or the restraint frame is conveniently replaced.

[0019] 2. The limiting rope is used to pull the floating ring, so that the floating ring acts on the sealing cover, the sealing cover is prevented from continuing to slide down, and the sealing cover is kept on the siphon pipe; the sealing cover is blocked at the bottom of the shell, when the shell is empty, the gas is prevented from being discharged through the siphon pipe; when the liquid level in the shell is raised, the buoyancy is used to act upward on the floating ring, so that the floating ring pulls open the sealing cover; when the liquid level submerges the siphon pipe, the liquid is discharged through the siphon pipe, the liquid is emptied by using the siphon principle, and automatic drainage is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structure schematic view of a hydrogen gas and solid carbon treatment mechanism of the present application.

[0021] Figure 2 It is a structure schematic view of a hydrogen sulfide pyrolysis mechanism of the present application.

[0022] Figure 3 It is a structure schematic view of an ammonia pyrolysis mechanism of the present application.

[0023] Figure 4 It is a structure schematic view of a plasma carbon dioxide reforming mechanism of the present application.

[0024] Figure 5 It is a structure schematic view of a first gas flow separator of the present application.

[0025] Figure 6 It is a structure schematic view of a shell of the present application.

[0026] Figure 7 It is a structure schematic view of a restraint frame of the present application.

[0027] Figure 8 It is a structure schematic view of a gas guide cylinder of the present application.

[0028] Figure 9 It is a structure schematic view of a sealing cover of the present application.

[0029] Figure 10 It is a structure schematic view of a drainage valve of the present application.

[0030] In the figure: 1, first plasma torch; 2, first plasma chemical reactor; 3, carbon fixation separator; 4, first gas flow separator; 5, second plasma torch; 6, second plasma chemical reactor; 7, sulfur water separator; 8, second gas flow separator; 9, plasma flare; 10, third plasma chemical reactor; 11, ammonia water separator; 12, third gas flow separator; 13, absorber; 14, third plasma torch; 15, fourth plasma chemical reactor; 16, fourth gas flow separator; 17, gas flow cooler; 18, outer shell; 19, restraint frame; 20, gas guide cylinder; 21, sealing cover; 22, drain valve; 23, first flange; 24, exhaust nozzle; 25, housing; 26, air inlet nozzle; 27, first sealing ring; 28, first isolation plate; 29, second isolation plate; 30, gas guide pipe; 31, sealing baffle; 32, plug; 33, sliding sleeve; 34, spring; 35, lifting ring; 36, cover body; 37, second flange; 38, siphon; 39, sealing cover; 40, floating ring; 41, nut; 42, second sealing ring; 43, limiting block; 44, limiting rope; 45, stop block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments of the application.

[0032] Reference Figure 1 A hydrogen-containing gas plasma processing device includes a pyrolysis hydrogen generation and solid carbon processing mechanism, which includes a first plasma torch 1 connected with a first plasma chemical reactor 2, the first plasma chemical reactor 2 is connected with a carbon fixation separator 3, and the carbon fixation separator 3 is connected with a first gas flow separator 4. The reagent, argon and methane are sent into the first plasma torch 1 and heated to a high temperature (5000-20000K) under the action of an alternating current arc. Next, they enter the first plasma chemical reactor 2 to complete the plasma pyrolysis process. Due to the gas vortex generated by the tangential flow of the gas in the channel of the first plasma torch 1, the components are fully mixed in the volume of the first plasma chemical reactor 2 to form a complete mixed reactor, and the reaction zone and the temperature zone are displaced along the reactor axis. After the completion of the methane decomposition reaction, the hydrogen gas must be separated from the heterogeneous mixture containing hydrogen, unreacted methane, other light hydrocarbons, solid carbon and inert gas. Next, the heterogeneous flow is filtered.

[0033] Reference Figure 2It also includes a hydrogen sulfide pyrolysis mechanism, which includes a second plasma torch 5, which is connected to a second plasma chemical reactor 6, which is connected to a sulfur water separator 7, which is connected to a second gas stream separator 8. Hydrogen sulfide is heated using an electric arc plasma, and after passing through the second plasma chemical reactor 6, the solid sulfur must be removed from the gas stream. The purified gas stream contains hydrogen, inert gas and unreacted hydrogen sulfide, which is divided into three streams.

[0034] The inert gas is again fed into the second plasma torch 5, where it mixes with fresh hydrogen sulfide and unreacted hydrogen sulfide.

[0035] With reference to Figure 3 It also includes an ammonia pyrolysis mechanism, which includes a plasma torch 9, which is connected to a third plasma chemical reactor 10, which is connected to an ammonia water separator 11, which is connected to a third gas stream separator 12, which is connected to an absorber 13. Hydrogen is separated from its mixture with nitrogen by pressure swing adsorption. Ammonia and nitrogen are fed into the plasma torch 9, where they are heated by an electric arc. The reaction develops rapidly and is completed in the third plasma chemical reactor 10. The product gas mixture is cooled in the ammonia water separator 11 with water. The mixture is then cooled and then dried by absorption in the absorber 13, separated into individual gas components by pressure swing adsorption.

[0036] With reference to Figure 4 It also includes a plasma carbon dioxide reforming mechanism, which includes a third plasma torch 14, which is connected to a fourth plasma chemical reactor 15, which is connected to a fourth gas stream separator 16, which is connected to a gas stream cooler 17. Plasma carbon dioxide reforming is very slow and must be used in the third plasma torch 14, where the development and complete completion of the chemical reaction takes place. An important feature of the plasma process using an alternating current third plasma torch 14 is the deep coupling of the plasma torch and the plasma reactor, where the vortex propagates inside the reactor, which is achieved by introducing the reagents tangentially into the third plasma torch 14. The reagents are effectively mixed in the fourth plasma chemical reactor 15 (more than 70% of the methane reacts with the carbon dioxide in the reactor, not in the plasma torch channel). Only a small amount of methane is converted into soot. After the completion of the carbon dioxide reforming, the reaction mixture is cooled and purified by mechanical filtration of soot particles. The gas mixture is separated into individual components by absorption methods and pressure swing adsorption.

[0037] The main flow of raw material (50-100%) is supplied through the plasma torch, which is the plasma-forming gas. When the raw material interacts with the electric arc, the plasma chemical reactions start inside the volume of the plasma torch. In addition, the flow of plasma and plasma-forming gas (raw material) from the volume of the plasma torch to the volume of the plasma chemical reactor, where the plasma chemical processes take place until they are completed. In order to achieve the maximum energy efficiency of the process and maximum conversion of raw materials into target products, gas dynamics and electrodynamic mixing of the gas flow (raw material) are used in the volume of the plasma chemical reactor, which ensures the most effective process of energy transfer from the electric arc to the raw material and uniform mixing of the raw material components in the volume of the plasma chemical reactor.

[0038] Referring to Figure 1 , 2 , 3, 4 and 5, the first gas flow separator 4 comprises a shell 18, the upper part of the shell 18 is embedded with a constraint frame 19, the inside of the constraint frame 19 is inserted with a gas guide cylinder 20, the upper part of the shell 18 is covered with a sealing cover 21, the lower part of the shell 18 is installed with a drainage valve 22, the upper part of the constraint frame 19 is sealed between the shell 18 and the sealing cover 21, the structures of the first gas flow separator 4, the second gas flow separator 8, the third gas flow separator 12 and the fourth gas flow separator 16 are the same. After the gas enters the inside of the shell 18, it spirals downward inside the shell 18, utilizes the condensation of the shell 18, at the same time, utilizes the fact that the mass of the condensed liquid is greater than that of the gas, so that the liquid adheres to the shell 18 by the centrifugal force of rotation, accumulates in the lower part of the shell 18, and the gas rises through the gas guide cylinder 20 into the upper part of the shell 18 and is discharged from the upper part of the shell 18.

[0039] Referring to Figure 5 and 6 , the shell 18 comprises a first flange 23, the lower end of the first flange 23 is fixedly connected with a shell body 25, the upper part of the shell body 25 is fixedly connected with an exhaust nozzle 24, and the end of the shell body 25 away from the exhaust nozzle 24 is fixedly connected with an air inlet nozzle 26. The gas enters the shell body 25 through the air inlet nozzle 26, spirals downward along the shell body 25, rises through the gas guide cylinder 20 and is discharged through the exhaust nozzle 24.

[0040] Referring to Figure 5 , 6 and 7, the constraint frame 19 comprises a first sealing ring 27, the lower end of the first sealing ring 27 is symmetrically fixedly connected with a first isolation plate 28, the lower end of the first isolation plate 28 is fixedly connected with a second isolation plate 29, the first sealing ring 27 is sealed on the first flange 23, and the first isolation plate 28 and the second isolation plate 29 are inserted into the upper part of the shell body 25. The first sealing ring 27, the first isolation plate 28 and the second isolation plate 29 are used to block between the gas guide cylinder 20 and the shell 18, so that the gas can spiral downward and then rise through the gas guide cylinder 20 and be discharged through the exhaust nozzle 24.

[0041] With reference to Figure 5 , 7 and 8, the air guide cylinder 20 comprises an air guide pipe 30, the upper part of the air guide pipe 30 is inserted into the first sealing ring 27, the first isolation plate 28 and the second isolation plate 29; the upper part of the air guide pipe 30 is fixedly connected with a sealing baffle 31, the upper end of the air guide pipe 30 is fixedly connected with a guide column, the guide column is sleeved with a sliding sleeve 33 and a spring 34, the lower end of the sliding sleeve 33 is fixedly connected with the upper end of the spring 34, the lower end of the spring 34 is fixedly connected with the air guide pipe 30, the upper part of the air guide pipe 30 is further fixedly connected with an insertion block 32, the sealing baffle 31 is blocked outside the first isolation plate 28, the air guide pipe 30 is inserted into the first isolation plate 28 and the second isolation plate 29, and the insertion block 32 is inserted on the first sealing ring 27. The sealing cover 21 is used to press down the sliding sleeve 33, the spring 34 is acted on downward through the sliding sleeve 33, and the air guide pipe 30 is acted on downward through the spring 34, so that the air guide pipe 30 is stably arranged in the restraint frame 19.

[0042] With reference to Figure 5 and 9 , the sealing cover 21 comprises a lifting ring 35, the lower end of the lifting ring 35 is fixedly connected with a cover body 36, and the lower part of the cover body 36 is fixedly connected with a second flange 37. The lifting ring 35 is hoisted upward by means of hoisting equipment, the cover body 36 is acted on upward through the lifting ring 35, and the second flange 37 is acted on upward through the cover body 36.

[0043] With reference to Figure 5 , 6 and 10, the drain valve 22 comprises a siphon pipe 38, the lower part of the siphon pipe 38 is inserted into the lower part of the shell 25; the lower part of the siphon pipe 38 is fixedly connected with a second sealing ring 42, the lower part of the siphon pipe 38 is threadedly installed with a nut 41, the upper end of the nut 41 is pressed on the lower end of the shell 25, the outer part of the second sealing ring 42 is fixedly connected with a stop block 45, the outer side of the second sealing ring 42 is provided with a limiting block 43, and the limiting block 43 is fixedly connected with the bottom of the shell 25; the upper part of the siphon pipe 38 is sleeved with a sealing cover 39, the outer part of the sealing cover 39 is fixedly connected with a floating ring 40, and the siphon pipe 38 and the floating ring 40 are connected with a limiting rope 44. The floating ring 40 is pulled by the limiting rope 44, so that the floating ring 40 acts on the sealing cover 39, the sealing cover 39 is prevented from continuing to slide downward, and the sealing cover 39 is kept on the siphon pipe 38; the sealing cover 39 is blocked on the bottom of the shell 25, gas is prevented from being discharged through the siphon pipe 38 when the shell 25 is empty; after the liquid level in the shell 18 is raised, the floating ring 40 is acted on upward by buoyancy, so that the floating ring 40 pulls away the sealing cover 39; after the liquid level submerges the siphon pipe 38, liquid is discharged through the siphon pipe 38, and the liquid is emptied by the siphon principle.

[0044] Working principle: reagents, argon and methane are fed into the first plasma torch 1, which is heated to a high temperature (5000-20000K) under the action of alternating current arc, and then they enter the first plasma chemical reactor 2 to complete the plasma pyrolysis process. Due to the gas vortex generated by the tangential flow of gas in the channel of the first plasma torch 1, the components are fully mixed in the volume of the first plasma chemical reactor 2, forming a complete mixed reactor, and the reaction zone and temperature zone are displaced along the reactor axis. After the completion of the methane decomposition reaction, hydrogen must be separated from the heterogeneous mixture of products containing hydrogen, unreacted methane, other light hydrocarbons, solid carbon and inert gases. Next, the heterogeneous stream is filtered. Hydrogen sulfide is heated using an arc plasma, and after the plasma passes through the second plasma chemical reactor 6, solid sulfur must be removed from the gas stream. The purified gas stream contains hydrogen, inert gases and unreacted hydrogen sulfide, which is divided into three streams.

[0045] Inert gases are again fed into the second plasma torch 5, and unreacted hydrogen sulfide is mixed with fresh hydrogen sulfide. Hydrogen is separated from its mixture with nitrogen by pressure swing adsorption. Ammonia and nitrogen are fed into the plasma torch 9, which is heated by an electric arc. The reaction develops rapidly and is completed in the third plasma chemical reactor 10. The product gas mixture is cooled in an ammonia water separator 11 with water. Then the mixture is cooled, then absorbed by the absorber 13, dried, and separated into individual gas components by pressure swing adsorption.

[0046] The above is only a preferred specific embodiment of the application, but the protection scope of the application is not limited thereto. Any skilled person in the art can make equivalent replacements or changes within the technical scope disclosed by the application and according to the technical solutions and inventive concepts of the application, which should be covered within the protection scope of the application.

[0047] In the description, the prior art known to those skilled in the art and not changed is simply mentioned for application direction, combined with the application to form a complete technology; the technology well known to those skilled in the art is used to assist those skilled in the art to quickly understand the main content of the application.

Claims

1. A plasma processing apparatus for a hydrogen-containing gas, comprising a pyrolytic hydrogen and solid carbon generating processing mechanism, characterized by: The pyrolysis hydrogen and solid carbon treatment mechanism comprises a first plasma torch (1), a first plasma chemical reactor (2) connected with the first plasma torch (1), a solid carbon separator (3) connected with the first plasma chemical reactor (2), and a first gas flow separator (4) connected with the solid carbon separator (3). The first gas flow separator (4) comprises a shell (18), a constraint frame (19) embedded in the upper part of the shell (18), a gas guide cylinder (20) inserted into the constraint frame (19), a sealing cover (21) covering the upper part of the shell (18), and a drain valve (22) installed at the lower part of the shell (18), wherein the upper part of the constraint frame (19) is sealed between the shell (18) and the sealing cover (21). The shell (18) comprises a first flange (23), a housing (25) fixedly connected to the lower end of the first flange (23), an exhaust nozzle (24) fixedly connected to the upper part of the housing (25), and an air inlet nozzle (26) fixedly connected to the end of the housing (25) away from the exhaust nozzle (24). The constraint frame (19) comprises a first sealing ring (27), a first isolation plate (28) fixedly connected to the lower end of the first sealing ring (27) in a symmetrical manner, and a second isolation plate (29) fixedly connected to the lower end of the first isolation plate (28), wherein the first sealing ring (27) is sealed on the first flange (23), and the first isolation plate (28) and the second isolation plate (29) are inserted into the upper part of the housing (25). The gas guide cylinder (20) comprises a gas guide pipe (30) inserted into the inside of the first sealing ring (27), the first isolation plate (28), and the second isolation plate (29), a sealing baffle (31) fixedly connected to the upper part of the gas guide pipe (30), a guide column fixedly connected to the upper end of the gas guide pipe (30), a sliding sleeve (33) and a spring (34) sleeved on the guide column, the lower end of the sliding sleeve (33) fixedly connected to the upper end of the spring (34), the lower end of the spring (34) fixedly connected to the gas guide pipe (30), and an insertion block (32) fixedly connected to the upper part of the gas guide pipe (30), wherein the sealing baffle (31) is blocked on the outer wall of the first isolation plate (28), the gas guide pipe (30) is inserted into the first isolation plate (28) and the second isolation plate (29), and the insertion block (32) is inserted into the first sealing ring (27).

2. A plasma processing apparatus for a hydrogen-containing gas according to claim 1, characterized by: The hydrogen sulfide pyrolysis mechanism comprises a second plasma torch (5), a second plasma chemical reactor (6) connected with the second plasma torch (5), a sulfur water separator (7) connected with the second plasma chemical reactor (6), and a second gas flow separator (8) connected with the sulfur water separator (7).

3. A plasma processing apparatus for a hydrogen-containing gas according to claim 2, wherein: The ammonia pyrolysis mechanism comprises a plasma torch (9) connected with a third plasma chemical reactor (10), the third plasma chemical reactor (10) is connected with an ammonia water separator (11), the ammonia water separator (11) is connected with a third gas flow separator (12), and the third gas flow separator (12) is connected with an absorber (13).

4. A plasma processing apparatus for a hydrogen-containing gas according to claim 3, wherein: The plasma carbon dioxide reforming mechanism comprises a third plasma torch (14) connected with a fourth plasma chemical reactor (15), the fourth plasma chemical reactor (15) is connected with a fourth gas flow separator (16), and the fourth gas flow separator (16) is connected with a gas flow cooler (17).

5. A plasma processing apparatus for a hydrogen-containing gas according to claim 4, wherein: The first gas flow separator (4), the second gas flow separator (8), the third gas flow separator (12) and the fourth gas flow separator (16) have the same structure.

6. The apparatus of claim 1 wherein: The sealing cover (21) comprises a lifting ring (35), the lower end of the lifting ring (35) is fixedly connected with a cover body (36), and the lower part of the cover body (36) is fixedly connected with a second flange (37).

7. The apparatus of claim 1 wherein: the gas source is a hydrogen gas source. The drain valve (22) comprises a siphon (38), the lower part of the siphon (38) is inserted into the lower part of the shell (25); the lower part of the siphon (38) is fixedly connected with a second sealing ring (42), the lower part of the siphon (38) is threadedly connected with a nut (41), the upper end of the nut (41) is pressed against the lower end of the shell (25), the outer part of the second sealing ring (42) is fixedly connected with a stop block (45), the outer side of the second sealing ring (42) is provided with a limiting block (43), the limiting block (43) is fixedly connected with the bottom of the shell (25); the upper part of the siphon (38) is slidably sleeved with a sealing cover (39), the outer part of the sealing cover (39) is fixedly connected with a floating ring (40), and the siphon (38) and the floating ring (40) are connected with a limiting rope (44). The ammonia pyrolysis mechanism comprises a plasma torch (9) connected with a third plasma chemical reactor (10), the third plasma chemical reactor (10) is connected with an ammonia water separator (11), the ammonia water separator (11) is connected with a third gas flow separator (12), and the third gas flow separator (12) is connected with an absorber (13). The plasma carbon dioxide reforming mechanism comprises a third plasma torch (14) connected with a fourth plasma chemical reactor (15), the fourth plasma chemical reactor (15) is connected with a fourth gas flow separator (16), and the fourth gas flow separator (16) is connected with a gas flow cooler (17). The first gas flow separator (4), the second gas flow separator (8), the third gas flow separator (12) and the fourth gas flow separator (16) have the same structure. The sealing cover (21) comprises a lifting ring (35), the lower end of the lifting ring (35) is fixedly connected with a cover body (36), and the lower part of the cover body (36) is fixedly connected with a second flange (37). The drain valve (22) comprises a siphon (38), the lower part of the siphon (38) is inserted into the lower part of the shell (25); the lower part of the siphon (38) is fixedly connected with a second sealing ring (42), the lower part of the siphon (38) is threadedly connected with a nut (41), the upper end of the nut (41) is pressed against the lower end of the shell (25), the outer part of the second sealing ring (42) is fixedly connected with a stop block (45), the outer side of the second sealing ring (42) is provided with a limiting block (43), the limiting block (43) is fixedly connected with the bottom of the shell (25); the upper part of the siphon (38) is slidably sleeved with a sealing cover (39), the outer part of the sealing cover (39) is fixedly connected with a floating ring (40), and the siphon (38) and the floating ring (40) are connected with a limiting rope (44).

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