A gas purification and desorbent regeneration circulating system based on reinforced gas-liquid mixing and separation

Abstract

The application relates to the technical field of impurity-containing gas purification, and discloses a gas purification and desorbent regeneration system based on reinforced gas-liquid mixing and separation, which is suitable for natural gas and impurity-containing flue gas treatment. The system aims to solve the problems of high pressure container failure risk, poor working condition adaptability, uneven gas-liquid mixing and insufficient desorbent regeneration in the prior art. The system comprises a first gas-liquid mixing reactor, a gas-liquid separator, a filter module, a second gas-liquid mixing reactor and an oxidation tank. The first gas-liquid mixing reactor is integrated with a Venturi structure, a centrally arranged single-phase atomizer and a micro-flow field structure to reinforce gas-liquid mixing. The gas-liquid separator is provided with double liquid inlets to adapt to different impurity content working conditions. The second gas-liquid mixing reactor is used for desorbent oxidation regeneration, and the oxidation tank is used for realizing cyclic utilization. The application is designed in a pry-down manner, and meanwhile, the pressure container and pipeline setting are avoided, so that the intrinsic safety of the system is improved. Relying on the modular structure and the multi-liquid inlet design, the adaptability and flexibility to the impurity content fluctuation working condition are greatly improved. With the aid of multi-stage atomization and reinforced mixing and separation technology, the impurity removal efficiency and the desorbent regeneration activity are significantly improved. The overall system has the outstanding advantages of stable operation, low investment and energy consumption, controllable maintenance cost, and can be widely applied to the purification scenes of natural gas, oilfield associated gas and industrial impurity-containing flue gas.

Description

Technical Field

[0001] This invention relates to the field of gas purification technology, specifically to a gas purification and desiccant regeneration and circulation system applicable to natural gas and industrial exhaust gas, based on enhanced gas-liquid mixing and separation technology. Background Technology

[0002] Raw natural gas, associated gas, and flue gas from oil and gas fields, as well as those generated in various industrial processes, typically contain components such as hydrogen sulfide, sulfur dioxide, organic sulfides, and carbon dioxide. These impurities are not only highly corrosive and toxic, but also degrade gas quality, affect subsequent utilization, and cause air pollution. Therefore, before these gases enter pipeline networks, are emitted, or undergo further processing, they must undergo rigorous purification treatment to meet environmental and process standards.

[0003] Currently, the mainstream desulfurization and decarbonization methods include dry and wet methods.

[0004] Dry desulfurization typically employs solid-phase desulfurizing agents such as molecular sieves, activated carbon, and metal oxides, which react with the gas in a gas-solid two-phase mixture. Dry desulfurization offers superior performance for small volumes of sulfur-containing gases with low sulfur content, and is characterized by its simple process, low investment, and small footprint. However, solid-phase desulfurizing agents have limited sulfur capacity, are difficult to regenerate, and require frequent replacement. Furthermore, the replaced agents are classified as solid waste and must be disposed of by companies with hazardous waste treatment qualifications, posing safety risks and potential secondary pollution hazards.

[0005] Wet processes, including the amine process and the ferric complex process, work on the principle of reacting liquid-phase desulfurization and decarbonization agents with sulfides and carbides in the gas to achieve desulfurization and decarbonization. The washing agent can be recycled. However, the amine process requires a dedicated regeneration unit and heating system for the solution, resulting in high investment and modification costs. In contrast, the ferric complex process requires no external heating for its solution regeneration unit, offers high washing efficiency, greater operational flexibility, stronger resistance to fluctuations, and can adapt to medium-to-high desulfurization loads. Its low operating costs have led to its widespread application in the natural gas and petrochemical industries.

[0006] However, in actual operation, gas purification technology still faces several challenges:

[0007] First, traditional desulfurization devices mostly use tray or packed tower structures, which are bulky, inflexible, and have a higher risk of failure. Once the internal medium leaks, the released energy is stronger, which can generate a larger shock wave or even an explosion, threatening the personal safety of the operators.

[0008] Second, the associated gas components produced by crude oil extraction are highly volatile, with sulfur and carbon content often fluctuating with changes in formation conditions and extraction methods. Traditional dewatering units are typically designed with fixed parameters, lacking flexibility and making it difficult to adapt to changing operating conditions in real time. This can lead to either overcapacity resulting in increased operating costs or insufficient capacity when sulfur and carbon loads surge.

[0009] Third, traditional desiccant devices often use spraying or bubbling methods to achieve gas-liquid mixing, which has limited gas-liquid mixing effect and low mass transfer efficiency.

[0010] Fourth, traditional stripper regeneration systems require additional stirring devices in the regeneration tank to promote gas-liquid mixing and contact, increasing equipment costs. Furthermore, they still suffer from uneven flow field within the tank, insufficient gas-liquid mixing in certain areas, and poor gas-liquid mass transfer, resulting in some stripper agents not regaining their activity.

[0011] Utility model patent application number 202323041455.1 discloses a natural gas desulfurization device using complexed iron wet desulfurization technology. It employs a traditional layered desulfurization tower structure, with sulfur-containing natural gas directly fed into the tower for treatment. While such devices can achieve a certain desulfurization effect, they suffer from problems such as large equipment size, insufficient gas-liquid mixing, inadequate adaptability to fluctuations in hydrogen sulfide concentration in the feed gas, and clogging by sulfur paste.

[0012] Gas-liquid mass transfer resistance in gas-liquid reactions is often the controlling step in macroscopic reaction rate; therefore, reducing gas-liquid mass transfer resistance and increasing gas-liquid mass transfer are key to improving reaction rate. Patent application CN202210827578.9 discloses a gas-liquid static mixer and its usage method. The gas-liquid static mixer includes a mixing pipe and a spiral guide vane. The spiral guide vane is equipped with a gas inlet pipe and a gas nozzle. A gas inlet pipe is connected to the gas inlet pipe, and liquid inlet pipes are symmetrically arranged. The gas nozzle's airflow direction forms an acute angle with the liquid flow direction. However, this technology has significant drawbacks in practical applications: the gas-liquid medium experiences a large pressure drop during flow through the complex static mixer. This significant pressure drop leads to high energy consumption and operating costs. Furthermore, the excessively high pressure drop limits the equipment's application in low-pressure systems, making it difficult to meet the practical needs of high-efficiency, low-consumption gas-liquid mixing equipment in the fields of natural gas, associated gas from oil fields, and industrial exhaust gas purification.

[0013] Chinese patent application CN201811400957.X discloses a gas-liquid static mixer and system, which enhances gas-liquid mixing intensity through a combination of a Venturi structure, a spiral extended twisted plate structure, and a filter. This design further improves gas-liquid dispersion and mass transfer efficiency, but it has significant limitations when purifying gases containing impurities: the venturi atomizer it relies on causes a large number of droplets to migrate towards the reactor wall, forming wall flow, making it difficult to ensure homogeneous gas-liquid mixing.

[0014] Utility model patent application number 201820208061.0 discloses a self-stirring regeneration tank. This device features symmetrically distributed air distribution pipes along the air inlet pipe axis, combined with a gas-liquid mixing method that relies on the inlet water flow rate for stirring. However, this device still suffers from problems such as uneven flow field within the tank, insufficient gas-liquid mixing and oxidation in localized areas, poor process flexibility, and the stirring intensity being entirely determined by the inlet liquid flow rate, making it unable to adapt to different waste liquid components or functional failure under low inlet liquid flow conditions.

[0015] Therefore, it is necessary to develop a gas purification system that is more efficient, more compact, more flexible in operation, and adaptable to different working conditions. This system should improve purification efficiency while reducing equipment investment, operating energy consumption, and maintenance costs, thereby achieving continuous, stable, economical, and efficient gas purification and desiccant regeneration. Summary of the Invention

[0016] This invention relates to the field of gas purification technology, specifically to a gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation, applicable to natural gas and industrial exhaust gas.

[0017] The purpose of this invention is to overcome the shortcomings of the prior art and provide a gas purification and desiccant regeneration circulation system that is highly efficient, adaptable, compact, and operates continuously.

[0018] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0019] A gas purification and desiccant regeneration and circulation system includes: a first gas-liquid mixing reactor, a gas-liquid separator, a filter module, a second gas-liquid mixing reactor, and a regeneration tank;

[0020] The first gas-liquid mixing reactor is provided with an impurity gas inlet, a first Venturi structure processing unit, a single-phase atomizer, a microflow field structure and a gas-liquid mixture outlet in sequence along the flow direction. The first Venturi structure processing unit is provided with a first contraction section, a first throat, a first suction port and a first expansion section in sequence along the fluid flow direction. The single-phase atomizer and the microflow field structure are provided in sequence along the fluid flow direction.

[0021] The gas-liquid separator is provided from top to bottom with a purified gas outlet, a gas-liquid separation unit, a liquid level control unit, a liquid inlet unit, and a waste liquid outlet. The gas-liquid separation unit includes at least one set of cylinder and demister. The liquid inlet unit includes a first liquid inlet, a flange cover, and a second liquid inlet. The gas-liquid mixture outlet of the first gas-liquid mixing reactor is connected to the first liquid inlet or the second liquid inlet of the gas-liquid separator.

[0022] The filtration module includes a waste liquid inlet, a centrifugal separator, a fourth circulation pump, a vacuum filter, a byproduct outlet, and a filtrate outlet. The waste liquid outlet of the gas-liquid separator is connected to the waste liquid inlet of the filtration module through the first circulation pump.

[0023] The second gas-liquid mixing reactor is provided with a filtrate inlet, a Venturi structure treatment unit and a regeneration and desiccant outlet in sequence along the flow direction. The Venturi structure treatment unit is provided with a second contraction section, a second throat, a second suction port and a second expansion section in sequence along the fluid flow direction. The filtrate inlet is connected to the filtrate outlet of the filtration module through a second circulation pump, and the suction port is connected to an air source through an air compressor.

[0024] The regeneration tank includes an exhaust gas outlet, a replenishment inlet, a regeneration detergent inlet, a distributor, and a detergent outlet. The gas-liquid mixture outlet of the second gas-liquid mixing reactor is connected to the regeneration detergent inlet of the regeneration tank, and the detergent outlet is connected to the first gas-liquid mixing reactor via a third circulation pump and a suction port.

[0025] Furthermore, the first gas-liquid mixing reactor is arranged vertically.

[0026] Furthermore, the throat diameter of the Venturi structural unit of the first gas-liquid mixing reactor and the second gas-liquid mixing reactor is an optimized size based on the operating conditions.

[0027] Furthermore, the single-phase atomizers of the first gas-liquid mixing reactor and the second gas-liquid mixing reactor are arranged at the geometric center of the flow channel cross-section.

[0028] Optionally, the Venturi structural units, single-phase atomizers, and microflow field structural components of the first gas-liquid mixing reactor and the second gas-liquid mixing reactor can be detachably connected or integrated.

[0029] Furthermore, the bottom of the gas-liquid separator is ellipsoidal.

[0030] Furthermore, each cylinder of the gas-liquid separator is detachably and sealed to the demister;

[0031] Preferably, the demister of the gas-liquid separator is a wire mesh demister.

[0032] Furthermore, the inner diameter of the first gas-liquid mixing reactor, the gas-liquid separator, and the second gas-liquid mixing reactor is controlled within 150 mm, and the volume is less than 30 L.

[0033] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0034] First, the gas purification and desiccant regeneration circulation system adopts a skid-mounted design, utilizing a compact structure to achieve intrinsic safety, avoiding the need for pressure vessels, thereby reducing equipment manufacturing and regulatory requirements, decreasing manufacturing and maintenance costs, and improving adaptability to different scenarios.

[0035] Secondly, the gas-liquid mixing reactor adopts a modular design and the gas-liquid separator adopts a multi-inlet design, which is highly adaptable to changes in the concentration of sulfur, carbon and dust impurities in the gas, and has a high degree of flexibility in matching operating conditions, effectively reducing operating costs.

[0036] Third, the gas-liquid mixing reactor employs a combination of Venturi atomization and single-phase atomization. The Venturi structure utilizes the strong shear force generated by the high-speed airflow at the throat to initially atomize the liquid. To further enhance the mixing intensity, an atomizing nozzle is installed at the center of the pipe cross-section for supplementary atomization. Ultimately, the central jet and the wall flow achieve deep turbulent mixing in the microflow field structure, thereby significantly enhancing the gas-liquid mixing effect.

[0037] Fourth, the filtrate is regenerated in a gas-liquid mixing reactor as the eluent to enhance gas-liquid mixing. The fully mixed eluent flows evenly into the regeneration tank through a distributor to further restore its activity and separate the tail gas, thereby improving the regeneration capacity of the eluent. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the gas purification and desiccant regeneration circulation system of the present invention;

[0039] Figure 2 for Figure 1 Schematic diagram of the structure of the first gas-liquid mixing reactor in China;

[0040] Figure 3 for Figure 1 Schematic diagram of the low liquid level structure of the gas-liquid separation reactor;

[0041] Figure 4 for Figure 1 Schematic diagram of the high-liquid-level structure of the gas-liquid separation reactor;

[0042] Figure 5 for Figure 1 Schematic diagram of the middle filter module;

[0043] Figure 6 for Figure 1 Schematic diagram of the second gas-liquid mixing reactor in the middle;

[0044] Figure 7 for Figure 1 Schematic diagram of the distributor structure;

[0045] Reference numerals: 1-First gas-liquid mixing reactor, 11-Impure gas inlet, 12-First Venturi structure treatment unit, 121-First contraction section, 122-First throat, 123-First suction port, 124-First expansion section, 13-Single-phase atomizer, 14-Microflow field structure, 15-Gas-liquid mixture outlet, 2-Gas-liquid separator, 21-Purified gas outlet, 22-Gas-liquid separation unit, 221-Cylinder, 222-Demister, 23-Liquid level control unit, 24-Inlet unit, 241-First inlet, 242-Flange cover, 243-Second inlet, 25-Waste liquid outlet, 3-Filter module, 3 1-Waste liquid inlet, 32-Centrifuge, 33-Fourth circulation pump, 34-Vacuum filter, 35-Byproduct outlet, 36-Filtrate outlet, 4-Second gas-liquid mixing reactor, 41-Filtrate inlet, 42-Second Venturi structure treatment unit, 421-Second contraction section, 422-Second throat, 423-Second suction port, 424-Second expansion section, 43-Regeneration stripping agent outlet, 5-Regeneration tank, 51-Tail gas outlet, 52-Make-up liquid inlet, 53-Regeneration stripping agent inlet, 54-Distributor, 55-Stripping agent outlet, 6-Air compressor, 7-Second circulation pump, 8-First circulation pump, 9-Third circulation pump. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0047] Example 1:

[0048] like Figure 1 As shown, the gas purification and desiccant regeneration circulation system based on enhanced gas-liquid mixing and separation in this embodiment is suitable for the purification of gases containing sulfur, carbon and dust. The system includes a first gas-liquid mixing reactor (1), a gas-liquid separator (2), a filter module (3), a second gas-liquid mixing reactor (4), and a regeneration tank (5).

[0049] like Figure 2 As shown, the first gas-liquid mixing reactor (1) is used to achieve full mixing and reaction of impurity gas and desiccant. It includes a first Venturi structure processing unit (12), a single-phase atomizer (13) and a microflow field structure (14) arranged sequentially along the fluid flow direction. It has an impurity gas inlet (11) at the beginning connected to the impurity gas source and a gas-liquid mixture outlet (15) at the end.

[0050] In this embodiment, the first Venturi structure processing unit (12) includes a first contraction section (121), a first throat (122), a first suction port (123), and a first expansion section (124) arranged sequentially along the fluid flow direction.

[0051] In this embodiment, the single-phase atomizer (13) and the microflow field structure (14) are arranged in multiple sets alternately in series along the fluid flow direction. At the same time, the microflow field structure (14) is optimized according to the actual working conditions and is suitable for the treatment of gases with high impurity content.

[0052] Specifically, the first gas-liquid mixing reactor (1) has an inner diameter of less than 50 mm and a volume of less than 30 L. This compact design avoids the need for pressure piping, reducing the risk of failure.

[0053] Specifically, in the first Venturi structure processing unit (12), the stripping agent is pumped into the first suction port (123) by the third circulation pump (9) to undergo preliminary atomization with the impurity-containing gas. Furthermore, a single-phase atomizer (13) is installed at the geometric center of the pipe cross-section for supplementary atomization, replenishing the system with sufficient stripping agent microdroplets under pressure. Further, a microfluidic structure (14) is installed to achieve secondary uniform distribution of the gas-liquid components and to cut and refine large droplets, promoting fine dispersion of the liquid. This design, combining Venturi atomization, single-phase atomization, and microfluidic structure, effectively suppresses wall adsorption effects, breaks down phase interface barriers, enhances the degree of two-phase turbulence, and ultimately ensures that the stripping agent and the impurity-containing gas are fully and uniformly mixed and contacted.

[0054] Specifically, the first gas-liquid mixing reactor is arranged vertically. This is intended to align the direction of gravity with the mainstream direction, thereby eliminating the interference of gravity on the uniformity and stability of the atomized flow field.

[0055] Specifically, the first Venturi structure processing unit (12), the single-phase atomizer (13), and the microfluidic structure (14) are independent separate structures, and the three are detachably and sealed together. This design allows the system to optimize the mixing intensity for gases with different impurity contents by flexibly increasing or decreasing the number of single-phase atomizers (13) and microfluidic structure components (14) connected in series, or by changing the microfluidic structure.

[0056] like Figure 3 As shown, the gas-liquid separator (2) includes, from top to bottom, a purified gas outlet (21), a gas-liquid separation unit (22), a liquid level control unit (23), a liquid inlet unit (24), and a waste liquid outlet (25).

[0057] In this embodiment, the liquid level control unit (23) is used to control the liquid level of the desiccant contained in the gas-liquid separator (2). The liquid level is controlled to be higher than the actual gas-liquid mixture inlet and lower than the demister (232). The unit can finely adjust the liquid level to regulate the residence time of the gas in the gas-liquid separator (2).

[0058] In this embodiment, the gas-liquid separation unit (22) includes a cylinder (221) and a demister (222).

[0059] In this embodiment, the liquid inlet unit (24) includes a first liquid inlet (241), a flange cover (242), and a second liquid inlet (243). The flange cover is sealed to the first liquid inlet (241), and the gas-liquid mixture outlet (14) of the first gas-liquid mixing reactor (1) is connected to the second liquid inlet (243). This connection method allows the gas to reside in the gas-liquid separator for a longer time, making it suitable for gases with high impurity content.

[0060] Specifically, the bottom of the gas-liquid separator (2) is designed to be ellipsoidal, which facilitates the discharge of waste liquid.

[0061] Specifically, the gas-liquid separator (2) has an inner diameter of less than 150 mm and a volume of less than 30 L. This compact design avoids the need for a pressure vessel and reduces the risk of failure.

[0062] In particular, the separation processing unit (22) adopts a detachable modular design, which can be configured with different numbers or types of demisters (341) according to the gas flow rate or droplet load under actual working conditions, so as to achieve optimal separation efficiency and economy.

[0063] like Figure 5 As shown, the filtration module (3) is equipped with a waste liquid inlet (31), a centrifugal separator (32), a fourth circulation pump (33), a vacuum filter (34), a byproduct outlet (35), and a filtrate outlet (36).

[0064] Specifically, in the filtration module (3), the upper filtrate separated by the centrifuge (32) flows out from the filtrate outlet (36), while the lower byproduct is transported to the vacuum filter (34) for further filtration and separation via the fourth circulation pump (33). After two stages of treatment, the resulting byproduct is discharged and recovered from the byproduct outlet (35), while the filtrate flows out from the filtrate outlet (36). The filter (3) combines centrifugal separation technology and vacuum filtration technology to filter and recover waste liquid. The multi-stage filtration and separation process effectively improves filtration efficiency and shortens the recycling cycle.

[0065] like Figure 6As shown, the second gas-liquid mixing reactor (4) is dedicated to the oxidative regeneration of the deactivated stripping agent from the filter module (3). It includes a filtrate inlet (41), a second Venturi structure processing unit (42), and a regenerated stripping agent outlet (43). The second Venturi structure processing unit (42) includes, in sequence along the fluid flow direction, a second contraction section (421), a second throat (422), a second suction port (423), and a second expansion section (424). The filtrate outlet (36) of the filter module (3) is connected to the filtrate inlet (41) of the second gas-liquid mixing reactor (4) for the second gas-liquid mixing reactor (4) to receive the stripping agent solution to be regenerated. The suction port is connected to an air source through an air compressor (6) to introduce air as an oxidant to regenerate the stripping agent.

[0066] In this embodiment, the regeneration tank includes, from top to bottom, an exhaust gas outlet (51), a liquid replenishment inlet (52), a regeneration desiccant inlet (53), a distributor (54), and a desiccant outlet (55). The regeneration desiccant inlet (53) is connected to the gas-liquid mixture outlet of the second gas-liquid mixing reactor (8), and the regeneration desiccant mixed with air is evenly discharged into the regeneration tank for full oxidation through the distributor. The desiccant outlet (94) is connected to the suction port (123) of the first gas-liquid mixing reactor (1) through the first circulation pump (9).

[0067] like Figure 7 As shown, the distributor is a pipe-type distributor, which ensures that the regeneration stripping agent can be evenly and stably distributed throughout the regeneration tank for full oxidation.

[0068] Specifically, the replenishment inlet (92) is used to inject the desiccant and catalyst to replenish the losses during system operation.

[0069] Example 2:

[0070] Unlike Example 1, as Figure 4 As shown, the gas-liquid mixture outlet (14) of the gas-liquid mixing reactor (1) is connected to the first liquid inlet (241) of the gas-liquid separator (2), and the flange cover is sealed to the second liquid inlet. This connection method results in a shorter residence time of the gas in the gas-liquid separator, which is suitable for purifying gases with low impurity content.

Claims

1. A gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation, characterized in that: It includes a first gas-liquid mixing reactor, a gas-liquid separator, a filter module, a second gas-liquid mixing reactor, and a regeneration tank connected in sequence; The first gas-liquid mixing reactor is provided with a gas inlet containing impurities, a first Venturi structure processing unit, a single-phase atomizer, a microflow field structure and a gas-liquid mixture outlet in sequence along the flow direction. The first Venturi structure processing unit is provided with a first contraction section, a first throat, a first suction port and a first expansion section in sequence along the fluid flow direction. The gas inlet containing impurities of the first gas-liquid mixing reactor is connected to a gas source containing impurities. The gas-liquid separator is provided from top to bottom as a purified gas outlet, a gas-liquid separation unit, a liquid level control unit, a liquid inlet unit, and a waste liquid outlet. The gas-liquid separation unit includes at least one set of cylinder and demister. The liquid inlet unit includes a first liquid inlet, a flange cover, and a second liquid inlet. The gas-liquid mixture outlet of the first gas-liquid mixing reactor is connected to the first liquid inlet or the second liquid inlet. The filtration module includes a waste liquid inlet, a centrifugal separator, a fourth circulation pump, a vacuum filter, a byproduct outlet, and a filtrate outlet. The waste liquid outlet of the gas-liquid separator is connected to the waste liquid inlet of the filtration module through the first circulation pump. The second gas-liquid mixing reactor is provided with a filtrate inlet, a second Venturi structure treatment unit and a regeneration and desiccant outlet in sequence along the flow direction. The second Venturi structure treatment unit is provided with a second contraction section, a second throat, a second suction port and a second expansion section in sequence along the fluid flow direction. The filtrate outlet of the filtration module is connected to the filtrate inlet of the second gas-liquid mixing reactor through a second circulation pump, and the suction port is connected to an air source through an air compressor. The regeneration tank includes an exhaust gas outlet, a replenishment inlet, a regeneration detergent inlet, a distributor, and a detergent outlet. The regeneration detergent outlet of the second gas-liquid mixing reactor is connected to the regeneration detergent inlet of the regeneration tank, and the detergent outlet of the regeneration tank is connected to the suction port of the first gas-liquid mixer through a third circulation pump.

2. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: The single-phase atomizer of the first gas-liquid mixing reactor is arranged at the geometric center of the flow channel cross section.

3. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: The first Venturi structure processing unit, single-phase atomizer and microflow field structure of the first gas-liquid mixing reactor are detachably connected or integrated.

4. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: In the first gas-liquid mixing reactor, multiple sets of single-phase atomizers and microflow field structures are alternately connected in series along the fluid flow direction, and the structure of the microflow field structures is optimized according to the actual working conditions.

5. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: The bottom shape of the gas-liquid separator includes, but is not limited to, a conical or ellipsoidal shape.

6. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: The liquid inlet of the gas-liquid separator is configured to be height-adjustable to adapt to different operating conditions.

7. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: In the first gas-liquid mixing reactor, the gas-liquid separator, and the second gas-liquid mixing reactor, the inner diameter of each is less than 50 mm, or the volume of each is less than 30 L.

8. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: Each cylinder of the gas-liquid separator is detachably and sealed to the demister.

9. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: The types of demisters include, but are not limited to, wire mesh type or baffle type.

10. The gas purification and desiccant regeneration and circulation system based on enhanced gas-liquid mixing and separation according to claim 1, characterized in that: The types of demisters include, but are not limited to, pipe-type or tray-type.

Images