A high efficiency gas separation system suitable for organic electrosynthesis processes

Abstract

The application relates to the field of organic electrosynthesis, in particular to a high-efficiency gas separation system suitable for an organic electrosynthesis process, which comprises a gas-liquid separation module, a methanol recovery module, a liquid phase reflux channel and an inlet pipeline, solves the problems of low separation efficiency, low methanol recovery rate and poor system stability in the prior art, and achieves the beneficial effects of improving hydrogen separation efficiency, improving the methanol recovery rate and purity, and improving the system operation stability.

Description

Technical Field

[0001] This invention relates to the field of organic electrosynthesis, and more specifically to a highly efficient gas separation system suitable for organic electrosynthesis processes. Background Technology

[0002] Organic electrosynthesis technology synthesizes various organic compounds through oxidation and reduction reactions at the anode and cathode via electrochemical reactions. During this process, gases such as hydrogen are often generated at the anode or cathode. Because hydrogen is flammable and explosive and needs to be separated promptly to avoid side reactions, its efficient separation is a critical step in the process. Traditional gas separation equipment often uses gravity-type separation containers, relying on the density difference between gas and liquid to achieve stratification. However, the substrate liquids in organic electrosynthesis reactions are typically high in viscosity and multi-component, containing components such as methanol solvent, electrosynthesis products, and unreacted raw materials. This leads to entrainment phenomena in traditional separation containers, resulting in low hydrogen separation efficiency. Furthermore, methanol, a commonly used solvent, easily escapes with the gas during separation, causing solvent loss, increasing production costs, and posing environmental pollution risks.

[0003] While some improvements exist in existing technologies, such as adding baffles or centrifugal separation devices, the following drawbacks remain: Insufficient separation efficiency: High-viscosity fluids experience high flow resistance during gravity separation, resulting in slow gas-liquid stratification and long hydrogen residence time, affecting the continuous operation of the reaction system; Low methanol recovery rate: Traditional packed towers or condensers have limited ability to capture tiny droplets and vapors, with methanol recovery rates generally below 90%; Poor system stability: The lack of automated control modules makes it easy for pressure and temperature fluctuations to lead to gas-liquid entrainment or uncontrolled methanol volatilization; High maintenance costs: Separation equipment is easily clogged by solid particles or colloidal substances, requiring frequent shutdowns for cleaning.

[0004] Therefore, in order to solve the problems existing in the prior art, the present invention proposes a high-efficiency gas separation system suitable for organic electrosynthesis processes. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a high-efficiency gas separation system suitable for organic electrosynthesis processes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A high-efficiency gas separation system suitable for organic electrosynthesis processes, comprising: A gas-liquid separation module, located in the lower half of the container, includes at least one perforated plate for receiving a mixed fluid from an organic electrosynthesis reaction system. The mixed fluid includes hydrogen, an organic reaction substrate liquid, a solvent methanol, and electrosynthesis products. The perforated plate is configured to smooth the mixed fluid by changing the fluid flow direction and velocity, causing the gas and liquid phases to separate under gravity, thus achieving preliminary separation of hydrogen and liquid phases. A methanol recovery module, located in the upper half of the container and connected to the gas-liquid separation module, includes a packing layer and a gas outlet. The packing layer is composed of porous ceramic, wire mesh, or polymer packing to increase the gas-liquid contact area and capture methanol droplets and vapors entrained in the gas. The gas outlet is connected to an external collection device for discharging the separated hydrogen. The liquid phase reflux channel, located at the bottom of the container, is connected to the gas-liquid separation module and is used to return the separated organic reaction substrate liquid and methanol to the organic electrosynthesis reaction system. The inlet pipe is located on the side wall of the container and is connected to the organic electrosynthesis reaction system. Its inner wall is equipped with guide vanes to reduce fluid turbulence and evenly distribute the mixed fluid to the gas-liquid separation module.

[0007] As a further improvement of the present invention, the perforated plate in the gas-liquid separation module has an inclination angle of 10° to 45° and a plate spacing of 50mm to 200mm; the surface of the perforated plate is coated with a hydrophobic material with a hydrophobic contact angle ≥120° to inhibit the adhesion of liquid phase on the plate surface and improve hydrogen separation efficiency; a gas collection chamber is provided below the perforated plate, and the gas collection chamber is connected to the methanol recovery module through a gas guide pipe, and a one-way valve is provided in the gas guide pipe to prevent liquid phase backflow.

[0008] As a further improvement of the present invention, the packing layer of the methanol recovery module is distributed in a stepped manner, including at least two layers of packing material of different materials; the upper packing layer is a polypropylene corrugated plate with a porosity of 85%-95%, used to intercept large-diameter methanol droplets; the lower packing layer is a stainless steel wire mesh with a porosity of 60%-80%, used to adsorb small-diameter droplets and vapor; an atomizing spray device is provided at the top of the packing layer, the spray liquid is low-temperature methanol, and the spraying rate is 0.1L / min to 0.5L / min, used for one-step condensation and recovery of methanol in the gas phase.

[0009] As a further improvement of the present invention, an instrument control subsystem is also included, the instrument control subsystem comprising: A liquid level sensor, installed on the inner wall of the container, is used to monitor the liquid level at the interface between the gas-liquid separation module and the methanol recovery module, and to adjust the valve opening of the liquid phase reflux channel through feedback signals. Pressure sensors are installed in the gas outlet and inlet pipes to detect the pressure difference in the system in real time and control the start and stop of the external vacuum pump to maintain a pressure range of 0.1MPa to 0.5MPa. The temperature control unit includes a heat exchange coil and a PID controller. The heat exchange coil is arranged around the packing layer and a cooling medium is introduced to maintain the system temperature between 20°C and 50°C to suppress methanol volatilization.

[0010] As a further improvement of the present invention, the guide vane of the inlet pipe has a spiral structure, the ratio of the guide vane spacing to the pipe diameter is 1:3 to 1:5, and the height of the guide vane is 1 / 10 to 1 / 5 of the pipe diameter; the surface of the guide vane is provided with a nano-level hydrophobic coating with a hydrophobic contact angle ≥150°, which is used to reduce fluid resistance and methanol residue.

[0011] As a further improvement of the present invention, the perforated plates in the gas-liquid separation module are arranged in an alternating manner, and the holes of adjacent perforated plates are asymmetrically distributed, with the hole spacing being 2 to 5 times the hole diameter; the edge of the perforated plate is provided with a flow guide groove, the depth of which is 1 mm to 3 mm and the width of which is 2 mm to 5 mm, to guide the separated liquid phase to flow along the inner wall of the container to avoid secondary entrainment of gas.

[0012] As a further improvement of the present invention, the stepped distribution of the filler layer also includes an intermediate transition layer, which is composed of a composite filler of glass fiber and activated carbon, with a porosity of 70%-85% and a specific surface area of ​​500m² / m³ to 700m² / m³. The transition layer is located between the polypropylene corrugated plate and the stainless steel wire mesh and is used to adsorb trace impurities in the organic electrosynthesis products to prevent them from entering the methanol recovery system.

[0013] As a further improvement of the present invention, the instrument control system further includes a safety interlock unit, the unit comprising: A hydrogen concentration sensor is installed at the gas outlet. When the hydrogen concentration is detected to be below 90%, an alarm is triggered and the inlet valve is closed. An explosion-proof pressure relief valve, located at the top of the container, has a pressure relief threshold of 0.6 MPa and is used to automatically release gas when the system pressure is abnormal. The emergency cooling device is linked to the temperature control unit. When the temperature exceeds 60°C, it activates the liquid nitrogen injection system to rapidly cool the temperature.

[0014] As a further improvement of the present invention, a self-cleaning filter is provided in the liquid phase reflux channel, the filter comprising: Multi-layer stainless steel filter screen with a pore size of 10μm to 50μm is used to intercept solid particles and colloidal substances. An ultrasonic vibrator, with a frequency of 20kHz to 40kHz, periodically removes deposits from the filter surface. The backwashing port connects to an external methanol supply pipeline, allowing the filter screen pores to be flushed through reverse flow.

[0015] The beneficial effects of this invention are: (1) Improve hydrogen separation efficiency. The gas-liquid separation module adopts an inclined perforated plate and hydrophobic coating design. The fluid smoothing treatment promotes gas-liquid stratification and improves hydrogen separation efficiency. The staggered arrangement of the perforated plate and the asymmetrical hole distribution break the fluid inertia, reduce secondary entrainment, and ensure that hydrogen escapes quickly into the gas collection chamber.

[0016] (2) The methanol recovery rate and its purity were improved. The methanol recovery rate was improved by combining the stepped packing layer with low temperature methanol spraying. Furthermore, the methanol purity was improved by adsorbing trace byproducts through the transition layer to prevent impurities from entering the recovery system.

[0017] (3) Improved system operation stability. By setting up PID controller and safety interlock unit, parameters such as liquid level, pressure and temperature can be monitored in real time to prevent safety hazards caused by system overpressure and overheating, thus improving the stability of system operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a high-efficiency gas separation system applicable to organic electrosynthesis processes according to the present invention; Figure 2 This is a second schematic diagram of an embodiment of the present invention; Detailed Implementation The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] A highly efficient gas separation system suitable for organic electrosynthesis processes, such as Figure 1 As shown, it includes: A gas-liquid separation module, located in the lower half of the container, includes at least one perforated plate for receiving a mixed fluid from an organic electrosynthesis reaction system. The mixed fluid includes hydrogen, an organic reaction substrate liquid, a solvent methanol, and electrosynthesis products. The perforated plate is configured to smooth the mixed fluid by changing the fluid flow direction and velocity, causing the gas and liquid phases to separate under gravity, thus achieving preliminary separation of hydrogen and liquid phases. Specifically, the perforated plate in the gas-liquid separation module has an inclination angle of 10° to 45° and a plate spacing of 50mm to 200mm; the surface of the perforated plate is coated with a hydrophobic material with a hydrophobic contact angle ≥120° to inhibit the adhesion of liquid phase on the plate surface and improve hydrogen separation efficiency; a gas collection chamber is provided below the perforated plate, and the gas collection chamber is connected to the methanol recovery module through a gas guide pipe. A one-way valve is installed in the gas guide pipe to prevent liquid phase backflow.

[0020] Specifically, the perforated plates in the gas-liquid separation module are arranged in an alternating manner, with the holes of adjacent perforated plates being asymmetrically distributed and the hole spacing being 2 to 5 times the hole diameter; the edges of the perforated plates are provided with guide grooves, the depth of which is 1 mm to 3 mm and the width of which is 2 mm to 5 mm, to guide the separated liquid phase to flow along the inner wall of the container to avoid secondary entrainment of gas.

[0021] The gas-liquid separation module is located in the lower half of the container, and its core is a multi-layer perforated plate. The perforated plate is made of 316L stainless steel, with a thickness of 2-5 mm, a pore diameter of 0.5-5 mm, and a porosity of 20%-60%. The perforated plates are arranged in an alternating pattern at an angle of 10°-45°, with a spacing of 50-200 mm between adjacent plates. The inclined design guides the mixed fluid containing hydrogen, organic substrate liquid, methanol, and electrosynthesis products along the plate surface, reducing turbulence; the staggered arrangement of the pores, with a spacing of 2-5 times the pore diameter, breaks the fluid inertia through asymmetrical distribution, promoting the stratification of the gas and liquid phases. The surface of the perforated plate is coated with a hydrophobic polytetrafluoroethylene (PTFE) coating with a hydrophobic contact angle ≥120°, effectively preventing liquid phase adhesion to the plate surface and ensuring rapid escape of hydrogen to the gas collection chamber. The gas collection chamber is located below the perforated plate and is connected to the methanol recovery module via a gas guide pipe. The gas guide pipe is equipped with a one-way valve, such as a spring-loaded check valve, to prevent liquid phase backflow.

[0022] A methanol recovery module, located in the upper half of the container and connected to the gas-liquid separation module, includes a packing layer and a gas outlet. The packing layer is composed of porous ceramic, wire mesh, or polymer packing to increase the gas-liquid contact area and capture methanol droplets and vapors entrained in the gas. The gas outlet is connected to an external collection device for discharging the separated hydrogen. Specifically, the packing layer of the methanol recovery module is distributed in a stepped manner, including at least two layers of packing material of different types; the upper packing layer is a polypropylene corrugated plate with a porosity of 85%-95%, used to intercept large-diameter methanol droplets; the lower packing layer is a stainless steel wire mesh with a porosity of 60%-80%, used to adsorb small-diameter droplets and vapor; an atomizing spray device is installed at the top of the packing layer, the spray liquid is low-temperature methanol, and the spray rate is 0.1L / min to 0.5L / min, used for one-step condensation and recovery of methanol in the gas phase.

[0023] Specifically, the stepped distribution of the filler layer also includes an intermediate transition layer, which is composed of a composite filler of glass fiber and activated carbon, with a porosity of 70%-85% and a specific surface area of ​​500m² / m³ to 700m² / m³. The transition layer is located between the polypropylene corrugated plate and the stainless steel wire mesh and is used to adsorb trace impurities in the organic electrosynthesis products to prevent them from entering the methanol recovery system.

[0024] The methanol recovery module is located in the upper part of the container, and its packing layer adopts a stepped distribution. The upper packing layer is made of polypropylene corrugated plate with a porosity of 85%-95% and a thickness of 50-100mm, used to intercept methanol droplets with a diameter >100μm; the lower packing layer is made of 304 stainless steel wire mesh with a porosity of 60%-80% and a thickness of 30-50mm, which can adsorb droplets and vapors with a diameter of 10-100μm. An atomizing spray device is installed at the top of the packing layer, with a nozzle orifice diameter of 0.1-0.3mm. The spray liquid is methanol pre-cooled to 5-10℃, and the spray rate is 0.1-0.5L / min. After the low-temperature methanol droplets come into contact with the rising gas, the residual methanol vapor in the gas phase is recovered through condensation, with a recovery rate of over 95%. A guide cone is installed at the bottom of the packing layer to guide the condensate back to the liquid phase channel.

[0025] The liquid phase reflux channel, located at the bottom of the container, is connected to the gas-liquid separation module and is used to return the separated organic reaction substrate liquid and methanol to the organic electrosynthesis reaction system. Specifically, a self-cleaning filter is provided in the liquid phase reflux channel, and the filter includes: Multi-layer stainless steel filter screen with a pore size of 10μm to 50μm is used to intercept solid particles and colloidal substances. An ultrasonic vibrator, with a frequency of 20kHz to 40kHz, periodically removes deposits from the filter surface. The backwashing port connects to an external methanol supply pipeline, allowing the filter screen pores to be flushed through reverse flow.

[0026] The inlet pipe is located on the side wall of the container and is connected to the organic electrosynthesis reaction system. Its inner wall is equipped with guide vanes to reduce fluid turbulence and evenly distribute the mixed fluid to the gas-liquid separation module.

[0027] Specifically, the guide vanes of the inlet pipe have a spiral structure, the ratio of the guide vane spacing to the pipe diameter is 1:3 to 1:5, and the height of the guide vanes is 1 / 10 to 1 / 5 of the pipe diameter; the surface of the guide vanes is provided with a nano-level hydrophobic coating with a hydrophobic contact angle ≥150°, which is used to reduce fluid resistance and methanol residue.

[0028] Spiral guide vanes on the inner wall of the inlet pipe, such as Figure 2 As shown, the flow guide is made of titanium alloy, with a ratio of 1:3 to 1:5 between the guide vane spacing and the pipe diameter. The pipe diameter is 150mm, the spacing is 30-50mm, and the guide vane height is 1 / 10 to 1 / 5 of the diameter, i.e., 15-30mm. The surface of the guide vane is coated with a nano-level silica hydrophobic coating with a contact angle ≥150°, reducing fluid resistance, lowering pressure drop by 30%-40%, and suppressing methanol residue. A diffuser is connected to the end of the inlet pipe with a diffusion angle of 15° to ensure uniform distribution of the mixed fluid to the perforated plate surface.

[0029] Specifically, it also includes an instrument control subsystem, which comprises: A liquid level sensor, installed on the inner wall of the container, is used to monitor the liquid level at the interface between the gas-liquid separation module and the methanol recovery module, and to adjust the valve opening of the liquid phase reflux channel through feedback signals. A capacitive liquid level sensor is installed on the inner wall of the container to monitor the height of the gas-liquid interface in real time. When the liquid level exceeds a set threshold, typically set at 60% of the container height, the sensor sends a signal to the PLC controller to adjust the opening of the electric valve in the liquid phase reflux channel. The opening range is 20%-100%, ensuring a stable separation interface.

[0030] Pressure sensors are installed in the gas outlet and inlet pipes to detect the pressure difference in the system in real time and control the start and stop of the external vacuum pump to maintain a pressure range of 0.1MPa to 0.5MPa. Piezoresistive pressure sensors are installed at the gas outlet and inlet pipes to detect the pressure difference ΔP. When ΔP > 0.5 MPa, an external vacuum pump is activated to maintain the system pressure at 0.1-0.5 MPa, preventing gas-liquid entrainment due to pressure fluctuations.

[0031] The temperature control unit includes a heat exchange coil and a PID controller. The heat exchange coil is arranged around the packing layer and a cooling medium is introduced to maintain the system temperature between 20°C and 50°C to suppress methanol volatilization.

[0032] The heat exchange coils are made of Hastelloy and arranged around the packing layer, with a -10℃ ethylene glycol aqueous solution as the cooling medium. The PID controller dynamically adjusts the cooling medium flow rate based on temperature data fed back from the thermocouples, keeping the system temperature stable between 20-50℃.

[0033] Specifically, the instrument control system further includes a safety interlock unit, which comprises: A hydrogen concentration sensor is installed at the gas outlet. When the hydrogen concentration is detected to be below 90%, an alarm is triggered and the inlet valve is closed. An explosion-proof pressure relief valve, located at the top of the container, has a pressure relief threshold of 0.6 MPa and is used to automatically release gas when the system pressure is abnormal. The emergency cooling device is linked to the temperature control unit. When the temperature exceeds 60°C, it activates the liquid nitrogen injection system to rapidly cool the temperature.

[0034] like Figure 2As shown, this embodiment is a basic gas separation system, containing only a gas-liquid separation module and a liquid phase reflux channel. The lower half of the container is equipped with a single-layer perforated plate with 3mm pores, a 30° inclination, and a 100mm spacing between the plates; there is no methanol recovery module. The mixed fluid enters the separation zone through an inlet pipe containing spiral guide vanes. Hydrogen is directly discharged through the gas collection chamber, and the liquid phase returns to the reaction system through the bottom reflux channel. This system is suitable for organic electrosynthesis systems using high-boiling-point solvents and does not require methanol recovery.

[0035] The third embodiment of the present invention is a fully automated control system, which integrates an instrument control system and a safety interlock unit. A transition layer is added to the upper half of the container's packing layer to adsorb trace byproducts, such as aldehydes. The instrument control unit displays pressure, temperature, and liquid level data in real time via an HMI (Human-Machine Interface) and supports remote control. When the system pressure exceeds 0.5 MPa, it automatically switches to the backup vacuum pump; when the temperature exceeds the limit, liquid nitrogen injection and heat exchange coils work together to cool the system. This configuration is suitable for continuous, large-scale organic electrosynthesis processes.

[0036] The foregoing has illustrated and described the basic features, principles, and advantages of the present invention. It should be noted that the present invention is not limited to the above embodiments, but only to some embodiments. Any improvements and additions made without departing from the spirit and scope of the present invention are considered to be within the scope of protection of the present invention.

Claims

1. A high-efficiency gas separation system suitable for organic electrosynthesis processes, characterized in that, include: A gas-liquid separation module, located in the lower half of the container, includes at least one perforated plate for receiving a mixed fluid from an organic electrosynthesis reaction system. The mixed fluid includes hydrogen, an organic reaction substrate liquid, a solvent methanol, and electrosynthesis products. The perforated plate is configured to smooth the mixed fluid by changing the fluid flow direction and velocity, causing the gas and liquid phases to separate under gravity, thus achieving preliminary separation of hydrogen and liquid phases. A methanol recovery module, located in the upper half of the container and connected to the gas-liquid separation module, includes a packing layer and a gas outlet. The packing layer is composed of porous ceramic, wire mesh, or polymer packing to increase the gas-liquid contact area and capture methanol droplets and vapors entrained in the gas. The gas outlet is connected to an external collection device for discharging the separated hydrogen. The liquid phase reflux channel, located at the bottom of the container, is connected to the gas-liquid separation module and is used to return the separated organic reaction substrate liquid and methanol to the organic electrosynthesis reaction system. The inlet pipe is located on the side wall of the container and is connected to the organic electrosynthesis reaction system. Its inner wall is equipped with guide vanes to reduce fluid turbulence and evenly distribute the mixed fluid to the gas-liquid separation module. The methanol recovery module has a stepped packing layer, comprising at least two layers of packing material of different types. The upper packing layer is a polypropylene corrugated plate with a porosity of 85%-95%, used to intercept large-diameter methanol droplets. The lower packing layer is a stainless steel wire mesh with a porosity of 60%-80%, used to adsorb small-diameter droplets and vapor. An atomizing spray device is installed at the top of the packing layer, with the spray liquid being methanol pre-cooled to 5-10°C, and the spraying rate being 0.1L / min to 0.5L / min, used for further condensation and recovery of methanol in the gas phase. It also includes an instrument control subsystem, which comprises: A liquid level sensor, installed on the inner wall of the container, is used to monitor the liquid level at the interface between the gas-liquid separation module and the methanol recovery module, and to adjust the valve opening of the liquid phase reflux channel through feedback signals. Pressure sensors are installed in the gas outlet and inlet pipes to detect the pressure difference in the system in real time and control the start and stop of the external vacuum pump to maintain a pressure range of 0.1MPa to 0.5MPa. The temperature control unit includes a heat exchange coil and a PID controller. The heat exchange coil is arranged around the packing layer and a cooling medium is introduced to maintain the system temperature between 20°C and 50°C to suppress methanol volatilization.

2. The high-efficiency gas separation system suitable for organic electrosynthesis processes according to claim 1, characterized in that, The perforated plate in the gas-liquid separation module has an inclination angle of 10° to 45° and a plate spacing of 50mm to 200mm. The surface of the perforated plate is coated with a hydrophobic material with a hydrophobic contact angle ≥120° to inhibit the adhesion of liquid phase on the plate surface and improve hydrogen separation efficiency. A gas collection chamber is provided below the perforated plate, which is connected to the methanol recovery module through a gas guide pipe. A one-way valve is installed in the gas guide pipe to prevent liquid phase backflow.

3. The high-efficiency gas separation system suitable for organic electrosynthesis processes according to claim 1, characterized in that, The guide vanes of the inlet pipe have a spiral structure, with the ratio of the guide vane spacing to the pipe diameter being 1:3 to 1:5, and the guide vane height being 1 / 10 to 1 / 5 of the pipe diameter; the surface of the guide vane is provided with a nano-level hydrophobic coating with a hydrophobic contact angle ≥150°, which is used to reduce fluid resistance and methanol residue.

4. The high-efficiency gas separation system suitable for organic electrosynthesis processes according to claim 1, characterized in that, In the gas-liquid separation module, the perforated plates are arranged in an alternating manner, with the holes of adjacent perforated plates being asymmetrically distributed and the hole spacing being 2 to 5 times the hole diameter. The edges of the perforated plates are provided with guide grooves, with a depth of 1 mm to 3 mm and a width of 2 mm to 5 mm, which are used to guide the separated liquid phase to flow along the inner wall of the container to avoid secondary entrainment of gas.

5. The high-efficiency gas separation system suitable for organic electrosynthesis processes according to claim 1, characterized in that, The stepped distribution of the filler layer also includes an intermediate transition layer, which is composed of a composite filler of glass fiber and activated carbon, with a porosity of 70%-85% and a specific surface area of ​​500m² / m³ to 700m² / m³. The transition layer is located between the polypropylene corrugated plate and the stainless steel wire mesh and is used to adsorb trace impurities in the organic electrosynthesis products to prevent them from entering the methanol recovery system.

6. The high-efficiency gas separation system suitable for organic electrosynthesis processes according to claim 1, characterized in that, The instrument control subsystem also includes a safety interlock unit, which comprises: A hydrogen concentration sensor is installed at the gas outlet. When the hydrogen concentration is detected to be below 90%, an alarm is triggered and the inlet valve is closed. An explosion-proof pressure relief valve, located at the top of the container, has a pressure relief threshold of 0.6 MPa and is used to automatically release gas when the system pressure is abnormal. The emergency cooling device is linked to the temperature control unit. When the temperature exceeds 60°C, it activates the liquid nitrogen injection system to rapidly cool the temperature.

7. The high-efficiency gas separation system suitable for organic electrosynthesis processes according to claim 1, characterized in that, The liquid phase reflux channel is equipped with a self-cleaning filter, the filter comprising: Multi-layer stainless steel filter screen with a pore size of 10μm to 50μm is used to intercept solid particles and colloidal substances. An ultrasonic vibrator, with a frequency of 20kHz to 40kHz, periodically removes deposits from the filter surface. The backwashing port connects to an external methanol supply pipeline, allowing the filter screen pores to be flushed through reverse flow.

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