Enhanced hydrogenation carbon sequestration device integrated in anaerobic reactor and working method thereof

Abstract

The invention discloses an enhanced hydrogenation carbon sequestration device integrated in an anaerobic reactor and a working method thereof.The enhanced hydrogenation carbon sequestration device integrated in the anaerobic reactor comprises an anaerobic fermentation tank and a pipeline, the pipeline is vertically arranged in the anaerobic reactor, a one-way valve is arranged at the top end of the pipeline, and the one-way valve is connected with the anaerobic fermentation tank. A hydrogen input port, a greenhouse gas input port and a feed liquid channel are arranged at the bottom end of the pipeline; the opening pressure of the one-way valve is smaller than the water pressure difference between the liquid level at the bottom of the pipeline and the liquid level at the top of the pipeline. By adopting the arrangement, the solubility of hydrogen and carbon dioxide in feed liquid in the anaerobic reactor can be remarkably improved, the chemical reaction between the hydrogen and the carbon dioxide can be enhanced, in-situ fixation of the carbon dioxide in the biogas and efficient synthesis of methane are realized through hydrogenation in the internal environment of the anaerobic fermentation tank, and the methane content in the biogas is increased; and an innovative solution is provided for carbon emission reduction and renewable energy source production.

Description

Technical Field

[0001] The present invention belongs to the technical field of anaerobic fermentation and carbon capture and conversion technology, and specifically relates to an enhanced hydrogenation carbon fixation device integrated in an anaerobic reactor and a working method thereof, aiming to achieve in-situ fixation of carbon dioxide in biogas and efficient synthesis of methane through hydrogenation in the internal environment of an anaerobic fermentation tank. Background Art

[0002] As the world's attention to climate change and sustainable energy continues to increase, carbon capture and conversion technology has become a research hotspot. During the anaerobic fermentation process, the biogas produced contains a certain amount of carbon dioxide. At the same time, hydrogen, as a clean and efficient energy carrier, is increasingly valued in chemical reactions. Converting hydrogen and carbon dioxide into valuable products, such as methane, under specific conditions can not only achieve carbon fixation and reduce greenhouse gas emissions, but also improve the quality of biogas and its energy utilization value.

[0003] However, the main challenge currently faced is the low dissolution and reaction efficiency of hydrogen and carbon dioxide in anaerobic systems. The solubility of hydrogen and carbon dioxide in water is not high. In conventional anaerobic reactor environments, it is difficult for the two to fully dissolve and undergo effective chemical reactions. Existing gas addition methods, such as simple gas injection or mixed stirring, cannot accurately control the amount of gas dissolved and the reaction conditions, resulting in incomplete reaction and low carbon fixation efficiency. This not only limits the effective utilization of carbon resources in the anaerobic fermentation process, but also increases the cost and complexity of subsequent processing, hindering the application of related technologies in large-scale industrial production. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide an enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor and a working method thereof, which can significantly improve the solubility of hydrogen and carbon dioxide in the feed liquid in the anaerobic reactor, strengthen the chemical reaction between the two, and achieve in situ fixation of carbon dioxide in biogas and efficient synthesis of methane through hydrogenation in the internal environment of the anaerobic fermentation tank, thereby increasing the methane content in biogas and providing innovative solutions for carbon emission reduction and renewable energy production.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A device for enhanced hydrogenation and carbon fixation integrated in an anaerobic reactor comprises an anaerobic fermentation tank and a pipeline. The pipeline is arranged in the anaerobic reactor and is arranged vertically. A one-way valve is arranged at the top of the pipeline, and a hydrogen input port, a greenhouse gas input port, and a feed liquid channel are arranged at the bottom of the pipeline.

[0007] Furthermore, the one-way valve is a pressure-type one-way valve, and the opening pressure of the one-way valve is less than the water pressure difference between the liquid level at the bottom of the pipeline and the liquid level at the top of the pipeline.

[0008] Furthermore, the middle portion of the pipe is spiral-shaped, and the outer periphery of the spiral portion of the pipe is close to the inner peripheral surface of the anaerobic fermentation tank.

[0009] Furthermore, a multi-axis telescopic frame is provided on the inner circumference of the anaerobic fermentation tank, a support hole is provided in the middle of the multi-axis telescopic frame, a support column is provided at the bottom of the anaerobic fermentation tank, a groove is recessed on the top surface of the support column, and a hydrogen passage, a greenhouse gas passage and a feed liquid passage are respectively provided on the inner wall of the groove corresponding to the hydrogen input port, the greenhouse gas input port and the feed liquid passage; the pipeline is plugged into the support hole, the bottom end of the pipeline is matched with the groove, and the hydrogen input port, the greenhouse gas input port and the feed liquid passage of the pipeline are respectively connected to the hydrogen passage, the greenhouse gas passage and the feed liquid passage.

[0010] Furthermore, the multi-axis telescopic frame includes a fixed ring, a support ring and a plurality of telescopic rods, the fixed ring is arranged on the inner circumference of the anaerobic fermentation tank, the support ring is located inside the fixed ring, an annular space is formed between the support ring and the fixed ring, and the plurality of telescopic rods are evenly distributed in the annular space along the annular direction, one end of the telescopic rod is hinged to the inner circumference of the fixed ring, the other end of the telescopic rod is hinged to the outer circumference of the support ring, and the support ring forms the support hole.

[0011] Furthermore, a limiting rubber ring is fixedly sleeved on the outer peripheral surface of the top of the pipe, and when the bottom end of the pipe is arranged in the groove, the limiting rubber ring of the pipe is supported on the supporting ring.

[0012] Furthermore, the feed liquid passage is connected to the anaerobic fermentation tank through a pipeline and a pumping member, and the hydrogen passage and the greenhouse gas passage are connected to the hydrogen supply source and the greenhouse gas supply source respectively through a pipeline and a pumping member.

[0013] Furthermore, the greenhouse gas supplied by the greenhouse gas inlet is biogas or carbon dioxide.

[0014] A working method of an enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor, using the enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor, comprises the following method steps:

[0015] S10: Open the anaerobic fermentation tank, put the pipeline into the anaerobic fermentation tank by the elevator, make the bottom end of the pipeline pass through the support hole, and then continue to lower it vertically until the bottom end of the pipeline is matched with the groove of the support column, and the hydrogen input port, greenhouse gas input port, and feed liquid channel of the pipeline are respectively connected with the hydrogen passage, greenhouse gas passage, and feed liquid passage of the groove, and then close the anaerobic fermentation tank;

[0016] S20: The feed liquid in the anaerobic fermentation tank is discharged into the pipeline through the feed liquid channel by the pumping component, so that the feed liquid in the pipeline is consistent with the feed liquid in the anaerobic fermentation tank, and the hydrogen and greenhouse gas are discharged into the pipeline through the hydrogen input port and the greenhouse gas input port respectively by the pumping component;

[0017] S30: Under the pressure resistance of the one-way valve, the pressure environment inside the pipeline is guaranteed to increase the solubility of greenhouse gases and hydrogen in the pipeline, thereby improving the hydrogenation carbon fixation to synthesize methane.

[0018] Furthermore, in S10, during the vertical lowering of the pipeline, when the spiral portion of the pipeline passes through the support hole, the multiple telescopic rods of the multi-axis support frame will automatically telescope and adjust as the position between the threaded portion of the pipeline and the support hole changes, so that the pipeline is in a relatively vertical and stable state, thereby achieving the purpose of positioning and anti-deviating.

[0019] The present invention has the following beneficial effects:

[0020] The present invention sets a specific pipeline in the anaerobic fermentation tank, so that the feed liquid in the anaerobic fermentation tank can be discharged into the pipeline through the feed liquid channel, so that the feed liquid inside the pipeline is consistent with the feed liquid of the anaerobic fermentation tank, so that the reaction environment inside the pipeline is highly integrated with the overall environment of the anaerobic fermentation tank, which is conducive to maintaining the living conditions of microorganisms and the continuity of chemical reactions, and at the same time provides a stable biochemical environment for the reaction of hydrogen and carbon dioxide. Greenhouse gas (i.e., biogas or carbon dioxide) can be discharged into the pipeline through the greenhouse gas input port, and hydrogen can be discharged into the pipeline through the hydrogen input port. In the air pressure environment generated by the one-way valve restriction and the microbial environment inside the pipeline, hydrogen and carbon dioxide can be promoted to react under the action of a catalyst (such as a specific enzyme produced by anaerobic microorganisms) to generate methane. In the pressure environment generated under the one-way valve pressure, the inside of the pipeline can maintain a relatively high pressure level during the process of filling with hydrogen and carbon dioxide. According to the relationship between gas solubility and pressure, the pressure can be increased so that the solubility of hydrogen and carbon dioxide in the feed liquid is significantly improved, thereby providing more reactants for subsequent reactions. Therefore, in-situ fixation of carbon dioxide in biogas and efficient synthesis of methane are achieved through hydrogenation in the internal environment of the anaerobic fermentation tank, thereby increasing the methane content in the biogas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the internal structure of the anaerobic fermentation tank and pipeline of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal structure of the anaerobic fermentation tank and the support column of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the multi-axis telescopic frame of the present invention.

[0024] In the figure: 1. anaerobic fermentation tank; 2. pipeline; 21. one-way valve; 22. hydrogen inlet; 23. greenhouse gas inlet; 24. liquid channel; 3. support column; 31. hydrogen passage; 32. greenhouse gas passage; 33. liquid passage; 34. groove; 4. multi-axis telescopic frame; 41. support ring; 42. fixing ring; 43. telescopic rod. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The terms such as "upper", "inner", "middle", "left", "right" and "one" cited in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. The change or adjustment of their relative relationship shall also be regarded as the scope of the present invention without substantially changing the technical content.

[0026] The present invention is aimed at the problem of low dissolution and reaction efficiency of hydrogen and carbon dioxide in anaerobic systems in the prior art. At the same time, the existing gas addition methods, such as simple gas injection or mixed stirring, cannot accurately control the dissolved amount of gas and reaction conditions, resulting in insufficient reaction and low carbon fixation efficiency, thus limiting the effective utilization of carbon resources in the anaerobic fermentation process, and also increasing the cost and complexity of subsequent treatment, hindering the application of related technologies in large-scale industrial production. Therefore, the present invention designs an enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor, which can significantly improve the solubility of hydrogen and carbon dioxide in the feed liquid in the anaerobic reactor, strengthen the chemical reaction between the two, and realize the in-situ fixation of carbon dioxide in biogas and efficient synthesis of methane by hydrogenation in the internal environment of the anaerobic fermentation tank 1, thereby increasing the methane content in biogas and providing innovative solutions for carbon emission reduction and renewable energy production.

[0027] The following is a detailed introduction to the enhanced hydrogenation and carbon fixation device integrated in the anaerobic reactor and its working method of the present invention:

[0028] Example 1

[0029] An enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor, such as Figures 1 to 3As shown, it includes an anaerobic fermentation tank 1 and a pipeline 2, the pipeline 2 is arranged in the anaerobic reactor, the pipeline 2 is arranged vertically, and a one-way valve 21 is arranged at the top of the pipeline 2, the one-way valve 21 is used for the overflow of gas and liquid, and the one-way valve 21 adopts a one-way valve 21 with a certain pressure limit, such as an elastic pressure relief valve, etc., wherein the opening pressure of the one-way valve 21 should be less than the water pressure difference between the liquid level at the bottom of the pipeline 2 and the liquid level at the top of the pipeline 2. The bottom end of the pipeline 2 is provided with a hydrogen input port 22, a greenhouse gas input port 23, and a liquid channel 24.

[0030] Therefore, the feed liquid in the anaerobic fermentation tank 1 can be discharged into the pipeline 2 through the feed liquid channel 24, so that the feed liquid in the pipeline 2 is consistent with the feed liquid in the anaerobic fermentation tank 1, so that the reaction environment in the pipeline 2 is highly integrated with the overall environment of the anaerobic fermentation tank 1, which is conducive to maintaining the living conditions of microorganisms and the continuity of chemical reactions, and at the same time provides a stable biochemical environment for the reaction of hydrogen and carbon dioxide. Greenhouse gas (i.e., biogas or carbon dioxide) can be discharged into the pipeline 2 through the greenhouse gas input port 23, and hydrogen can be discharged into the pipeline 2 through the hydrogen input port 22. In the air pressure environment generated by the one-way valve 21 being opened and the microbial environment inside the pipeline 2, hydrogen and carbon dioxide can be promoted to react under the action of a catalyst (such as a specific enzyme produced by anaerobic microorganisms) to generate methane. In the pressure environment generated under the pressure of the one-way valve 21, the inside of the pipeline 2 can maintain a relatively high pressure level during the process of filling with hydrogen and carbon dioxide. According to the relationship between gas solubility and pressure, the pressure can be increased so that the solubility of hydrogen and carbon dioxide in the liquid is significantly improved, thereby providing more reactants for subsequent reactions. Therefore, in-situ fixation of carbon dioxide in biogas and efficient synthesis of methane are achieved through hydrogenation in the internal environment of the anaerobic fermentation tank 1, thereby increasing the methane content in the biogas.

[0031] In this embodiment, the middle part of the pipeline 2 is spiral, and the outer periphery of the spiral part of the pipeline 2 is close to the inner peripheral surface of the anaerobic fermentation tank 1. Therefore, the length and slope of the pipeline 2 can be increased to slow down the rising time of the gas (hydrogen, biogas or carbon dioxide), thereby improving the effect of hydrogenation carbon fixation to synthesize methane.

[0032] In this embodiment, the inner circumference of the anaerobic fermentation tank 1 is provided with a multi-axis telescopic frame 4, the middle part of the multi-axis telescopic frame 4 has a support hole, the bottom of the anaerobic fermentation tank 1 is provided with a support column 3, the top surface of the support column 3 is recessed with a groove 34, and the inner wall of the groove 34 is provided with a hydrogen passage 31, a greenhouse gas passage 32 and a liquid passage 33 corresponding to the hydrogen input port 22, the greenhouse gas input port 23 and the liquid passage 24; the pipeline 2 is plugged and matched with the support hole, the bottom end of the pipeline 2 is matched with the groove 34, and the hydrogen input port 22, the greenhouse gas input port 23 and the liquid passage 24 of the pipeline 2 are respectively connected with the hydrogen passage 31, the greenhouse gas passage 32 and the liquid passage 33. Among them, the liquid passage 33 is connected with the anaerobic fermentation tank 1 through the pipeline 2 and the pumping part (the pumping part can be a feeding pump), and the hydrogen passage 31 and the greenhouse gas passage 32 are respectively connected with the hydrogen supply source and the greenhouse gas supply source through the pipeline 2 and the pumping part.

[0033] Among them, the multi-axis telescopic frame 4 includes a fixed ring 42, a support ring 41 and a plurality of telescopic rods 43. The fixed ring 42 is arranged on the inner circumference of the anaerobic fermentation tank 1, and the support ring 41 is located in the fixed ring 42. An annular space is formed between the support ring 41 and the fixed ring 42. The plurality of telescopic rods 43 are evenly distributed in the annular space along the annular direction. One end of the telescopic rod 43 is hinged to the inner circumference of the fixed ring 42, and the other end of the telescopic rod 43 is hinged to the outer circumference of the support ring 41. The support ring 41 forms a support hole.

[0034] Therefore, by setting up a multi-axis telescopic frame 4, in the process of vertically lowering the pipeline 2, the bottom end of the pipeline 2 needs to pass through the support hole. In the process of continuous change in the position of the spiral portion of the pipeline 2 and the support hole, the multiple telescopic rods 43 of the multi-axis telescopic frame 4 will automatically adjust the telescopic length to adapt to the position change of the support hole, thereby achieving the role of auxiliary support for the pipeline 2. At the same time, it can reduce the shaking of the pipeline 2 during the lowering process, thereby achieving the effect of positioning and anti-swaying, so that the hydrogen input port 22, greenhouse gas input port 23, and feed liquid channel 24 at the bottom of the subsequent pipeline 2 can be accurately connected with the hydrogen passage 31, greenhouse gas passage 32 and feed liquid passage 33 respectively.

[0035] At the same time, a limiting rubber ring is fixedly sleeved on the outer peripheral surface of the top of the pipe 2 . When the bottom end of the pipe 2 is arranged in the groove 34 , the limiting rubber ring of the pipe 2 is supported on the supporting ring 41 .

[0036] In summary, the core points of the enhanced hydrogenation and carbon fixation device integrated in the anaerobic reactor of the present invention are mainly summarized as follows:

[0037] 1. Device body: A slender pipe 2 is vertically placed inside the anaerobic fermentation tank 1. The pipe 2 is completely inside the anaerobic fermentation tank 1, and the liquid inside it is consistent with the overall liquid in the anaerobic reactor. This design makes the reaction environment inside the pipe 2 highly integrated with the overall environment of the anaerobic fermentation tank 1, which is conducive to maintaining the living conditions of microorganisms and the continuity of chemical reactions, and provides a stable biochemical environment for the reaction of hydrogen and carbon dioxide.

[0038] 2. Dual gas input and pressure control: Three openings are set at the bottom of pipeline 2, one of which is connected to the feed liquid in anaerobic fermentation tank 1, ensuring the dynamic balance between the feed liquid in pipeline 2 and the feed liquid in anaerobic fermentation tank 1, and maintaining the stability of the entire system. The other two openings are used to input hydrogen and carbon dioxide into the feed liquid in pipeline 2. Pipeline 2 is closed on all sides and at the bottom, and the one-way valve 21 needs to overcome a certain pressure to be pushed open. By accurately controlling the opening pressure of the one-way valve 21, the pressure environment inside pipeline 2 can be adjusted. When the opening pressure of the one-way valve 21 is set to a high level, the inside of pipeline 2 can maintain a high pressure level during the process of filling hydrogen and carbon dioxide. According to the relationship between gas solubility and pressure, the increase in pressure significantly increases the solubility of hydrogen and carbon dioxide in the feed liquid, thereby providing more reactants for subsequent reactions.

[0039] 3. Optimized reaction conditions: The pressure environment and microbial environment in pipeline 2 are used to promote the reaction of hydrogen and carbon dioxide under the action of catalysts (such as specific enzymes produced by anaerobic microorganisms) to generate methane. By controlling the input flow and pressure of the gas and monitoring the reaction parameters in pipeline 2 (such as temperature, pH, gas concentration, etc.), the reaction conditions can be adjusted in real time to ensure that the hydrogenation carbon fixation reaction is always in the best state.

[0040] Example 2

[0041] A working method of an enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor, using the enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor of the above embodiment 1, comprises the following method steps:

[0042] S10: Open the anaerobic fermentation tank 1, put the pipe 2 into the anaerobic fermentation tank 1 by means of a lift, make the bottom end of the pipe 2 pass through the support hole, and then continue to lower it vertically until the bottom end of the pipe 2 is matched with the groove 34 of the support column 3, and the hydrogen input port 22, the greenhouse gas input port 23, and the liquid feed channel 24 of the pipe 2 are respectively connected with the hydrogen passage 31, the greenhouse gas passage 32, and the liquid feed passage 33 of the groove 34, and then close the anaerobic fermentation tank 1;

[0043] In S10, during the process of vertically lowering the pipe 2 and the process of the spiral portion of the pipe 2 passing through the support hole, the multiple telescopic rods 43 of the multi-axis support frame will automatically telescope and adjust as the position between the threaded portion of the pipe 2 and the support hole changes, so that the pipe 2 is in a relatively vertical and stable state, thereby achieving the purpose of positioning and anti-deviating.

[0044] S20: The feed liquid in the anaerobic fermentation tank 1 is discharged into the pipeline 2 through the feed liquid channel 24 by the pumping member, so that the feed liquid in the pipeline 2 is consistent with the feed liquid in the anaerobic fermentation tank 1, and the hydrogen and greenhouse gas are discharged into the pipeline 2 through the hydrogen input port 22 and the greenhouse gas input port 23 by the pumping member respectively;

[0045] S30: Under the pressure resistance of the one-way valve 21, the pressure environment inside the pipeline 2 is ensured to increase the solubility of greenhouse gases and hydrogen in the pipeline 2, thereby improving the hydrogenation carbon fixation to synthesize methane.

[0046] Therefore, the working method of the enhanced hydrogenation and carbon fixation device integrated in the anaerobic reactor of the present invention is mainly achieved through three steps from S10 to S30, wherein step S10 is mainly for the stable installation of the pipeline 2, thereby providing the main device body for the subsequent hydrogenation and carbon fixation reaction, and steps S20 and S30 are mainly achieved by discharging the feed liquid in the anaerobic fermentation tank 1 into the pipeline 2, so that the feed liquid in the pipeline 2 is consistent with the feed liquid in the anaerobic fermentation tank 1, and at the same time, by discharging hydrogen and greenhouse gas (biogas or carbon dioxide) into the pipeline 2, and then under the pressure environment of the one-way valve 21, the inside of the pipeline 2 can maintain a high pressure level during the process of filling with hydrogen and carbon dioxide. According to the relationship between gas solubility and pressure, the pressure can be increased so that the solubility of hydrogen and carbon dioxide in the feed liquid is significantly improved, thereby providing more reactants for subsequent reactions, thereby achieving in-situ fixation of carbon dioxide in biogas and efficient synthesis of methane through hydrogenation in the internal environment of the anaerobic fermentation tank 1, thereby increasing the methane content in the biogas.

[0047] The implementation methods of the present invention are not limited to this. According to the above content of the present invention, using common technical knowledge and customary means in the field, without departing from the above basic technical ideas of the present invention, the present invention can also make other various forms of modification, replacement or combination, all of which fall within the scope of protection of the present invention.

Claims

1. An enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor, characterized in that: It comprises an anaerobic fermentation tank and a pipeline, wherein the pipeline is arranged in the anaerobic reactor, the pipeline is arranged vertically, a one-way valve is arranged at the top of the pipeline, and a hydrogen input port, a greenhouse gas input port and a feed liquid channel are arranged at the bottom of the pipeline.

2. The enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor according to claim 1, characterized in that: The one-way valve is a pressure-type one-way valve, and the opening pressure of the one-way valve is less than the water pressure difference between the liquid level at the bottom of the pipeline and the liquid level at the top of the pipeline.

3. The enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor according to claim 1, characterized in that: The middle part of the pipeline is spiral-shaped, and the outer periphery of the spiral part of the pipeline is close to the inner peripheral surface of the anaerobic fermentation tank.

4. The device for enhanced hydrogenation and carbon fixation integrated in an anaerobic reactor as claimed in claim 3, characterized in that: The inner circumference of the anaerobic fermentation tank is provided with a multi-axis telescopic frame, the middle part of the multi-axis telescopic frame has a support hole, the bottom of the anaerobic fermentation tank is provided with a support column, the top surface of the support column is recessed with a groove, the inner wall of the groove is respectively provided with a hydrogen passage, a greenhouse gas passage and a feed liquid passage corresponding to the hydrogen input port, the greenhouse gas input port and the feed liquid passage; the pipeline is plug-fitted with the support hole, the bottom end of the pipeline is matched with the groove, and the hydrogen input port, the greenhouse gas input port and the feed liquid passage of the pipeline are respectively connected with the hydrogen passage, the greenhouse gas passage and the feed liquid passage.

5. The enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor as claimed in claim 4, characterized in that: The multi-axis telescopic frame includes a fixed ring, a support ring and a plurality of telescopic rods, the fixed ring is arranged on the inner circumference of the anaerobic fermentation tank, the support ring is located inside the fixed ring, an annular space is formed between the support ring and the fixed ring, a plurality of telescopic rods are distributed in the annular space at equal intervals along a circular direction, one end of the telescopic rod is hinged to the inner circumference of the fixed ring, the other end of the telescopic rod is hinged to the outer circumference of the support ring, and the support ring forms the support hole.

6. The device for enhanced hydrogenation and carbon fixation integrated in an anaerobic reactor as claimed in claim 5, characterized in that: A fixed limiting rubber ring is sleeved on the outer circumferential surface of the top of the pipe. When the bottom end of the pipe is arranged in the groove, the limiting rubber ring of the pipe is supported on the supporting ring.

7. The device for enhanced hydrogenation and carbon fixation integrated in an anaerobic reactor as claimed in claim 6, characterized in that: The liquid passage is connected to the anaerobic fermentation tank through a pipeline and a pumping member, and the hydrogen passage and the greenhouse gas passage are connected to the hydrogen supply source and the greenhouse gas supply source respectively through a pipeline and a pumping member.

8. The device for enhanced hydrogenation and carbon fixation integrated in an anaerobic reactor as claimed in claim 1, characterized in that: The greenhouse gas supplied by the greenhouse gas input port is biogas or carbon dioxide.

9. A working method of an enhanced hydrogenation and carbon fixation device integrated in an anaerobic reactor, characterized in that: The enhanced hydrogenation and carbon fixation device integrated in the anaerobic reactor as claimed in claim 7 comprises the following steps: S10: Open the anaerobic fermentation tank, put the pipeline into the anaerobic fermentation tank by the elevator, make the bottom end of the pipeline pass through the support hole, and then continue to lower it vertically until the bottom end of the pipeline is matched with the groove of the support column, and the hydrogen input port, greenhouse gas input port, and feed liquid channel of the pipeline are respectively connected with the hydrogen passage, greenhouse gas passage, and feed liquid passage of the groove, and then close the anaerobic fermentation tank; S20: The feed liquid in the anaerobic fermentation tank is discharged into the pipeline through the feed liquid channel by the pumping component, so that the feed liquid in the pipeline is consistent with the feed liquid in the anaerobic fermentation tank, and the hydrogen and greenhouse gas are discharged into the pipeline through the hydrogen input port and the greenhouse gas input port respectively by the pumping component; S30: Under the pressure resistance of the one-way valve, the pressure environment inside the pipeline is guaranteed to increase the solubility of greenhouse gases and hydrogen in the pipeline, thereby improving the hydrogenation carbon fixation to synthesize methane.

10. The working method according to claim 9, characterized in that: In S10, during the process of vertically lowering the pipeline and the spiral portion of the pipeline passing through the support hole, the multiple telescopic rods of the multi-axis support frame will automatically telescope and adjust as the position between the threaded portion of the pipeline and the support hole changes, so that the pipeline is in a relatively vertical and stable state, thereby achieving the purpose of positioning and anti-deviating.

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