Integrated tower-shaped hydrogen production liquid treatment device and treatment method

Abstract

The invention discloses an integrated tower-shaped hydrogen production gas-liquid treatment device and method, the integrated tower-shaped hydrogen production gas-liquid treatment device comprises a wave stabilizing section, an electrolyte cooling section, a gas-liquid separation section, a gas washing section, a gas cooling section and a fog drop separation section which are sequentially communicated from bottom to top, the wave stabilizing section is internally provided with a wave stabilizing device, and the bottom of the wave stabilizing section is provided with an electrolyte outlet; a first tubular heat exchanger is arranged in the electrolyte cooling section, a first cooling medium inlet and a first cooling medium outlet are formed in the side face of the electrolyte cooling section, a dispersing disc and a gas rising device are arranged in the gas-liquid separation section, a tangential gas-liquid mixed flow inlet is formed in the side face of the gas-liquid separation section, trapping filler is arranged in the fog drop separation section, and a gas exhaust port is formed in the top of the fog drop separation section. The tangential gas-liquid mixed flow inlet is formed in the side face of the gas-liquid separation section, a gas-liquid mixture enters the gas-liquid separation section in the tangential direction, gas and electrolyte are separated by means of different centrifugal forces borne by gas and liquid phases, alkali mist and undissolved particles carried in the gas are reduced, and the separation efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogen production equipment and processes, and relates to an integrated tower-shaped hydrogen production gas-liquid processing device and a processing method. Background Art

[0002] Hydrogen is a clean, environmentally friendly, abundant and widely used green energy. As the reserves of fossil energy such as oil, natural gas and coal are decreasing, hydrogen energy is gradually gaining more investment in the global energy transformation and development and occupies an important position.

[0003] The main sources of hydrogen in industrial production are water electrolysis, methanol cracking, natural gas and other process methods. Among them, alkaline water electrolysis has a long history, mature technology and low cost, and is the mainstream large-scale hydrogen production method.

[0004] The gas-liquid separator is a key component of alkaline water electrolysis hydrogen production systems. During the hydrogen production process, the cathode of the alkaline electrolyzer produces a mixture of hydrogen, electrolyte, and water, while the anode produces a mixture of oxygen, electrolyte, and water. These gases enter the gas-liquid separator, where they are separated from the electrolyte, scrubbed to remove alkali, and cooled to produce high-purity hydrogen and oxygen.

[0005] At present, the gas-liquid separation device is composed of multiple single devices, such as electrolyte coolers, gas-liquid separators, scrubbers, gas coolers, wire mesh separators, etc., which form a gas-liquid treatment system. The devices are connected by pipes and flanges. As the gas-liquid treatment volume increases, the size of the equipment increases accordingly. The integrated skids are super-wide and super-high. Transportation requires the removal of containers, pipes, and instruments, which makes disassembly and assembly difficult, requires multiple transport units, and has high transportation costs. In addition, the pipeline connections of the various devices in the gas-liquid treatment system are complex, with many long, curved, and winding pipelines. The pressure and transmission losses during gas-liquid treatment are large, and regular shutdowns for cleaning are required, which seriously affects the efficiency of the hydrogen production system. Integrating single devices, reducing pipeline connections, and facilitating disassembly and transportation are the future directions of large-scale hydrogen production gas-liquid treatment systems.

[0006] For example, Chinese patent application number CN117959900A discloses a gas-liquid separation tower capable of cooling electrolyte, washing alkaline mist, cooling gas, and performing secondary separation. In the gas-liquid separation stage, an atomizing nozzle sprays the gas-liquid mixture onto a packing device, utilizing gravity differences to separate gas and electrolyte. However, this separation efficiency is low, with a large amount of alkaline mist entering the next treatment stage, corroding internal components. Furthermore, electrolyte accumulation poses a risk of clogging the gas-liquid inlet. Chinese patent application number CN116623230A discloses a multifunctional integrated gas-liquid processor that performs separation, washing, alkaline solution heat exchange, gas heat exchange, and gas filtration. However, the gas-liquid separation stage also utilizes gravity settling, which is inefficient, and the gas-liquid separation tower is a single unit, making it difficult to overhaul and maintain. Summary of the Invention

[0007] One object of the present invention is to provide an integrated tower-type hydrogen production gas-liquid processing device, which solves the problem of low gas-liquid separation efficiency of existing hydrogen production gas-liquid processing devices, reduces pipeline connection and transmission losses, and facilitates disassembly and transportation.

[0008] Another object of the present invention is to provide an integrated tower-type hydrogen production gas-liquid processing method.

[0009] A technical solution adopted by the present invention is an integrated tower-shaped hydrogen production gas-liquid processing device, comprising a stabilizing section, an electrolyte cooling section, a gas-liquid separation section, a gas washing section, a gas cooling section and a droplet separation section, which are connected to each other from bottom to top in sequence. Adjacent components are connected and fixed by flanges, fasteners and sealing gaskets. A stabilizing device is installed inside the stabilizing section, an electrolyte connecting port is installed on the side wall, and an electrolyte discharge port is installed at the bottom; a first tubular heat exchanger is provided inside the electrolyte cooling section, and a first cooling medium inlet and a first cooling medium outlet connected to the first tubular heat exchanger are provided on the side; a dispersion disk is provided inside the gas-liquid separation section, a gas rising device is provided at the center of the dispersion disk, a gas-liquid mixed flow inlet is provided in the gas-liquid separation section along the tangential direction of the cylinder wall, a primary washing device and a secondary washing device are provided inside the gas washing section from bottom to top, a capturing filler is provided inside the droplet separation section, and a gas discharge port is provided at the top.

[0010] The outer periphery of the wave stabilization device is fitted with the inner wall of the wave stabilization section. The wave stabilization device is provided with a plurality of evenly distributed through holes. These through holes have regular geometric shapes, the same cross-sectional area and volume. The wave stabilization device is located above the electrolyte connection port.

[0011] The outer wall of the stabilizing section is provided with a liquid phase interface of a differential pressure detection component, the outer wall of the gas-liquid separation section is provided with a gas phase interface of a differential pressure detection component, and the gas phase interface of the differential pressure detection component is located above the dispersion disk.

[0012] A baffle is provided inside the first tubular heat exchanger, and the first cooling medium inlet is located above the first cooling medium outlet.

[0013] The outer wall of the dispersion disk is in contact with the inner wall of the gas-liquid separation section. There are evenly distributed vent holes on the dispersion disk, and the gas-liquid mixed flow inlet is lower than the dispersion disk.

[0014] The gas rising device is composed of a hollow channel tube at the bottom, a support rod in the middle and a liquid baffle at the top. There is a gas escape space between the liquid baffle and the hollow channel tube. A rib plate is welded between the support rod and the hollow channel tube. The liquid baffle is umbrella-shaped, and the opening area of the liquid baffle is larger than the outer diameter of the hollow channel tube.

[0015] The first-level washing device includes a first-level washing water inlet, a spray assembly and a liquid collecting plate. The first-level washing water inlet is arranged on the outer wall of the gas washing section and is connected to the spray assembly. The liquid collecting plate is arranged below the spray assembly and fixed on the inner wall of the gas washing section. The liquid collecting plate is provided with evenly distributed air holes.

[0016] The secondary washing device includes a secondary washing water inlet, a spray structure and a filler structure. The secondary washing water inlet is arranged on the outer wall of the gas washing section and is connected to the spray structure. The filler structure is arranged below the spray structure.

[0017] A second tubular heat exchanger is provided inside the gas cooling section, and a second cooling medium inlet and a second cooling medium outlet are provided on the outer wall of the gas cooling section, which are communicated with the second tubular heat exchanger.

[0018] Another technical solution adopted by the present invention is to use the above-mentioned integrated tower-shaped hydrogen production gas-liquid treatment device as a treatment method, comprising connecting the gas-liquid mixture outlet of the alkaline electrolyzer to the gas-liquid mixed flow inlet of the integrated tower-shaped hydrogen production gas-liquid treatment device, and the gas-liquid mixture enters the gas-liquid separation section along the circumferential tangent of the cylinder wall, and is separated under the action of centrifugal force to form an internal gas vortex and an external liquid vortex. The internal gas vortex spirals upward and enters the gas washing section through the gas rising device, and passes through the primary washing device and the secondary washing device in sequence to complete the bubble washing and deflection. Separate and remove alkaline mist. The washed liquid flows into the electrolyte cooling section. The washed gas passes through the second tubular heat exchanger and exchanges heat with the cooling medium to further remove saturated water vapor. Then it rises and passes through the capture filler to separate the droplets in the gas, complete the gas drying, and finally is discharged from the gas outlet to enter the gas storage tank or the next process section. The external liquid swirl rotates downward along the cylinder wall and enters the electrolyte cooling section. It fully exchanges heat with the cooling medium through the first tubular heat exchanger to complete cooling, then flows into the stable wave band, and finally is discharged through the electrolyte outlet.

[0019] The beneficial effects of the present invention are as follows: (1) By setting a tangential gas-liquid mixed flow inlet on the side of the gas-liquid separation section, the high-speed gas-liquid mixture enters the gas-liquid separation section tangentially. The gas and electrolyte are separated by utilizing the different centrifugal forces on the gas and liquid phases, thereby reducing the alkaline mist and undissolved particles entrained in the gas and improving the separation efficiency. (2) A wave stabilization zone is set at the bottom of the gas-liquid processing device. A wave stabilization device is installed inside the wave stabilization zone, which can effectively alleviate the problem of electrolyte fluctuation, prevent the electrolyte from generating a large liquid level difference during gravity sedimentation, and improve the stability of equipment operation; (3) The use of a two-stage washing device prolongs the contact time between gas and washing water, increases the contact area, reduces alkaline corrosion, and improves washing efficiency; (4) The wave stabilization section, electrolyte cooling section, gas-liquid separation section, gas washing section, gas cooling section and droplet separation section are integrated into one, and adjacent components are connected and fixed by flanges, fasteners and sealing gaskets. The internal parts of each processing section are interconnected, which simplifies the pipeline connection between the gas-liquid separation devices, reduces the pressure and material loss during the gas-liquid treatment process, facilitates disassembly and maintenance, saves manpower, has a simple structure, requires fewer transportation units, and has low transportation costs, thereby improving transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the integrated tower-type hydrogen production gas-liquid processing device of the present invention; Figure 2 It is a structural schematic diagram of the wave stabilization device in the integrated tower-type hydrogen production gas-liquid processing device of the present invention; Figure 3 It is a structural schematic diagram of the funnel-shaped gas-liquid separation section in the integrated tower-shaped hydrogen production gas-liquid processing device of the present invention; Figure 4 This is a schematic structural diagram of the gas-liquid mixed flow inlet in the integrated tower-type hydrogen production gas-liquid processing device of the present invention; Figure 5 This is a schematic structural diagram of a straight-cylinder gas-liquid separation section in an integrated tower-type hydrogen production gas-liquid processing device according to the present invention; Figure 6 This is a schematic structural diagram of a dispersion plate in an integrated tower-type hydrogen production gas-liquid processing device of the present invention; Figure 7 It is a structural schematic diagram of the gas rising device in the integrated tower-type hydrogen production gas-liquid processing device of the present invention; Figure 8 This is a schematic diagram of the connection structure between the hollow channel tube and the rib plate in the integrated tower-type hydrogen production gas-liquid processing device of the present invention; Figure 9 It is a flow chart of the processing method of the integrated tower-type hydrogen production gas-liquid processing device of the present invention.

[0021] In the figure, 1. wave stabilization section, 2. electrolyte cooling section, 3. gas-liquid separation section, 4. gas washing section, 5. gas cooling section, 6. droplet separation section, 11. wave stabilization device, 12. electrolyte connection port, 13. differential pressure detection component liquid phase interface, 14. electrolyte discharge port, 21. first cooling medium inlet, 22. first cooling medium outlet, 23. first tubular heat exchanger, 204. baffle, 31. gas-liquid mixed flow inlet, 32. gas rising device, 3 3. Dispersion plate, 34. Gas phase interface of differential pressure detection component, 41. Primary washing water inlet, 42. Spray assembly, 43. Liquid collecting plate, 44. Secondary washing water inlet, 45. Spray structure, 46. Packing structure, 51. Second cooling medium inlet, 52. Second cooling medium outlet, 53. Second tubular heat exchanger, 61. Capturing packing, 62. Gas exhaust outlet, 321. Hollow channel tube, 322. Baffle plate, 323. Support rod, 324. Rib plate. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1 An integrated tower-type hydrogen production gas-liquid processing device, see Figure 1 , including a stabilizing section 1, an electrolyte cooling section 2, a gas-liquid separation section 3, a gas washing section 4, a gas cooling section 5, and a droplet separation section 6, which are sequentially connected from bottom to top. Adjacent components are connected and fixed by flanges, fasteners, and gaskets. The internal spaces of each processing section are connected. A stabilizing device 11 is installed inside the stabilizing section 1, an electrolyte connection port 12 is installed on the side wall, and an electrolyte discharge port 14 is installed on the bottom. In the alkaline water electrolysis hydrogen production system, the cathode of the electrolyzer produces a mixture of hydrogen and alkaline solution, and the anode produces a mixture of oxygen and alkaline solution. The cathode and anode are each connected to a gas-liquid processing device. The electrolyte connection port of the hydrogen-side gas-liquid processing device is connected to the electrolyte connection port of the oxygen-side gas-liquid processing device to balance the liquid levels of the two tanks.

[0024] See also Figure 2 The stabilizing device 11 is provided with a plurality of evenly distributed regular geometric through holes, which have the same cross-sectional area and volume. The washing water and electrolyte flowing down from the upper processing sections converge into the stabilizing section 1. The stabilizing device can alleviate shaking, make the liquid surface tend to be stable, and avoid a large liquid level difference. The stabilizing device 11 is located above the electrolyte connection port 12.

[0025] The electrolyte cooling section 2 is internally provided with a first tubular heat exchanger 23, with a first cooling medium inlet 21 and a first cooling medium outlet 22 provided on its side. The cooling medium enters the electrolyte cooling section 2 through the first cooling medium inlet 21 and exits through the first cooling medium outlet 22, cooling the electrolyte, wash water, and condensate flowing through the first tubular heat exchanger 23. Baffles 24 are internally provided within the first tubular heat exchanger 23 to increase the baffle path and enhance the cooling effect. The first cooling medium inlet 21 is located above the first cooling medium outlet 22.

[0026] See also Figure 3 In this embodiment, the bottom of the gas-liquid separation section 3 is funnel-shaped and consists of a straight tube and a conical tube. The straight tube is located above the conical tube. The large end of the conical tube is connected to the straight tube, and the small end of the conical tube is connected to the electrolyte cooling section. The conical tube structure can converge the gas vortex and improve the gas-liquid separation effect.

[0027] See also Figure 4 A dispersion disk 33 is provided inside the gas-liquid separation section 3. The dispersion disk has evenly distributed vents of any shape to disperse and guide the escaping gas. A gas riser 32 is provided in the center of the dispersion disk 33. A tangential gas-liquid mixed flow inlet 31 is provided on the side of the gas-liquid separation section 3, so that the gas-liquid mixture enters the gas-liquid separation section tangentially. When the pressure of the gas-liquid mixture itself is high, a vortex can be formed in the gas-liquid separation section by the pressure of the gas and liquid itself. When the pressure of the gas-liquid mixture itself is low, it is difficult to form a vortex in the gas-liquid separation section. In this case, a booster valve can be installed at the gas-liquid mixed flow inlet 31 to increase the pressure of the gas-liquid mixture so that a vortex is formed in the gas-liquid separation section.

[0028] The outer wall of the dispersion disk 33 is in contact with the inner wall of the gas-liquid separation section 3, and the inner wall is fixedly connected to the gas riser 32. The gas-liquid mixed flow inlet 31 is lower than the bottom end face of the gas riser 32, so that the central gas vortex after gas-liquid separation can pass through the gas riser 32 and enter the gas washing section 4.

[0029] The gas scrubbing section 4 is equipped with a primary scrubbing device and a secondary scrubbing device from bottom to top. The gas cooling section 5 is equipped with a second tubular heat exchanger 53. The outer wall of the gas cooling section 5 is provided with a second cooling medium inlet 51 and a second cooling medium outlet 52, which are connected to the second tubular heat exchanger 53. The droplet separation section 6 is equipped with a capture filler 61 and a gas discharge outlet 62 at the top.

[0030] Example 2 An integrated tower-shaped hydrogen production gas-liquid processing device comprises, from bottom to top, a wave stabilization section 1, an electrolyte cooling section 2, a gas-liquid separation section 3, a gas scrubbing section 4, a gas cooling section 5, and a droplet separation section 6. These components are all straight cylindrical, with the internal spaces of each processing section interconnected. Adjacent components are connected and secured with flanges, fasteners, and gaskets, facilitating installation, disassembly, and maintenance.

[0031] The stabilizing section 1 is internally installed with a stabilizing device 11, with an electrolyte connection port 12 installed on the side wall and an electrolyte outlet 14 installed on the bottom. The stabilizing device 11 is provided with multiple evenly distributed through-holes with regular geometric shapes and uniform apertures. The washing water and electrolyte flowing down from the upper treatment sections converge into the stabilizing section 1. The stabilizing device can alleviate shaking, stabilize the liquid surface, and avoid large liquid level differences. The stabilizing device 11 is located above the electrolyte connection port 12. The outer wall of the stabilizing section 1 is provided with a differential pressure detection component liquid phase interface 13, which is equipped with a differential pressure transmitter or a magnetic flap level gauge to monitor the pressure or liquid level in the tank in real time.

[0032] A first tubular heat exchanger 23 is provided inside the electrolyte cooling section 2 , and a first cooling medium inlet 21 and a first cooling medium outlet 22 are provided on the side. A baffle 24 is provided inside the first tubular heat exchanger 23 , and the first cooling medium inlet 21 is located above the first cooling medium outlet 22 .

[0033] See also Figure 5 and Figure 6 A dispersion disk 33 is provided inside the gas-liquid separation section 3. The dispersion disk has evenly distributed air vents, which can be of any shape to disperse and guide the escaping gas. A gas riser 32 is provided in the center of the dispersion disk 33. A gas-liquid mixed flow inlet 31 is provided on the side of the gas-liquid separation section 3. The gas-liquid mixed flow inlet 31 is provided along the circumferential tangential direction of the gas-liquid separation section 3, so as to promote the gas-liquid mixed flow to enter the gas-liquid separation section 3 tangentially. Two vortexes are formed under the action of centrifugal force, with the liquid flowing downward along the cylinder wall and the gas swirling inwardly upward. The outer wall of the dispersion disk 33 fits with the inner wall of the gas-liquid separation section 3, and the inner wall is fixedly connected to the gas riser 32. The gas-liquid mixed flow inlet 31 is lower than the bottom end face of the gas riser 32, so that the central gas after gas-liquid separation can swirl upward and enter the gas washing section 4 through the gas riser 32. The outer wall of the gas-liquid separation section 3 is provided with a differential pressure detection component gas phase interface 34, which is located above the dispersion disk 33. The differential pressure detection component gas phase interface 34 is installed with a differential pressure transmitter for monitoring the pressure in the tank.

[0034] See also Figure 7 and Figure 8The gas rising device 32 is composed of a hollow channel tube 321 at the bottom, a support rod 323 in the middle and a liquid baffle 322 at the top. There is a gas escape space between the liquid baffle 322 and the hollow channel tube 321. A rib 324 is welded between the support rod 323 and the hollow channel tube 321. The liquid baffle 322 is umbrella-shaped. The opening area of the liquid baffle 322 is larger than the outer diameter of the hollow channel tube 321 to prevent liquid from entering the gas rising device 32. The hollow channel tube 321 can be a straight tube, a conical tube, a square tube or other various internal hollow pipe shapes and combinations. The hollow channel tube 321 in this embodiment is a straight tube with an open trumpet shape at the bottom to guide the gas rising.

[0035] The gas scrubbing section 4 is provided with a primary scrubbing device and a secondary scrubbing device from bottom to top. The primary scrubbing device comprises a primary scrubbing water inlet 41, a spray assembly 42, and a liquid collecting plate 43. The primary scrubbing water inlet 41 is provided on the outer wall of the gas scrubbing section 4 and is connected to the spray assembly 42. The liquid collecting plate 43 is provided below the spray assembly 42 and is fixed to the inner wall of the gas scrubbing section 4. The liquid collecting plate 43 is provided with evenly distributed air holes with an inner diameter of ≤10mm. The scrubbing water forms a shallow accumulation on the liquid collecting plate 43, and the gas passes through the small through holes to form bubbles, thus performing a primary scrubbing. The secondary scrubbing device comprises a secondary scrubbing water inlet 44, a spray structure 45, and a packing structure 46. The secondary scrubbing water inlet 44 is provided on the outer wall of the gas scrubbing section 4 and is connected to the spray structure 45. The packing structure 46 is provided below the spray structure 45. The packing structure 46 uses evenly distributed geometrically structured packing or random packing such as Pall rings, Raschig rings, and Haier rings. The washing water enters from the secondary washing water inlet 44, is sprinkled evenly and finely through the spray structure 45, and adheres to the packing structure 46. The gas fully collides and deflects under the obstruction of the packing structure 46, and after the alkaline droplets therein are separated, the gas floats upward through the gaps in the packing structure 46. The washing water flows into the lower part of the gas-liquid treatment device under the action of gravity, completing the secondary washing.

[0036] A second tubular heat exchanger 53 is installed within the gas cooling section 5. A second cooling medium inlet 51 and a second cooling medium outlet 52 are provided on the outer wall of the gas cooling section 5. The second cooling medium inlet 51 and the second cooling medium outlet 52 communicate with the second tubular heat exchanger 53. As the gas rises through the second tubular heat exchanger 53, it fully exchanges heat with the cooling medium. The saturated water vapor in the gas condenses into small water droplets upon cooling. These droplets fall due to gravity, and the gas floats up into the droplet separation section 6.

[0037] A gas outlet 62 is provided at the top of the droplet separation section 6, and a collecting filler 61 is provided inside. The collecting filler 61 is a wire mesh demister, a demister or a condenser to remove droplets of 3 to 5 microns in the gas.

[0038] Example 3 An integrated tower-type hydrogen production gas-liquid processing method, see Figure 9 The cathode of the alkaline electrolyzer produces a mixture of hydrogen and alkaline solution, and the anode produces a mixture of oxygen and alkaline solution. The hydrogen-alkali and oxygen-alkali enter the hydrogen-side or oxygen-side gas-liquid treatment device for separation respectively. The working principles of the two gas-liquid treatment devices are completely the same. Taking the hydrogen-side gas-liquid treatment method as an example, it includes opening the first cooling medium inlet 21, the first cooling medium outlet 22, the second cooling medium inlet 51 and the second cooling medium outlet 52, and circulating the cooling medium into the first tubular heat exchanger 23 and the second tubular heat exchanger 53 respectively; opening the first-level washing water inlet 41 and the second-level washing water inlet 44, and passing washing water, opening the electrolyte connecting port 12, the electrolyte discharge port 14 and the gas discharge port 62, connecting the oxygen-side gas-liquid treatment device with the hydrogen-side gas-liquid treatment device through the electrolyte connecting port 12, opening the gas-liquid mixed flow inlet 31, and connecting the gas-liquid mixture outlet of the alkaline electrolyzer to the gas-liquid mixed flow inlet 31 of the integrated tower-type hydrogen production gas-liquid treatment device. The gas-liquid mixture enters the gas-liquid separation section 3 along the circumferential tangent of the cylinder wall, and is separated under the action of centrifugal force to form an internal gas vortex and an external liquid vortex. The internal gas vortex spirals upward and enters the gas washing section 4 through the gas rising device 32, and passes through the first-level washing device and the second-level washing device in turn to complete bubble washing and deflection separation, remove alkaline mist, and the washed liquid flows into the electrolyte cooling section 2. The washed gas passes through the second tubular heat exchanger 53, exchanges heat with the cooling medium, further removes saturated water vapor, and then rises through the capture filler 61 to separate the droplets in the gas, complete gas drying, and finally is discharged from the gas outlet 62 to enter the gas storage tank or the next process section; the external liquid vortex rotates downward along the cylinder wall into the electrolyte cooling section 2, and fully exchanges heat with the cooling medium through the first tubular heat exchanger 23 to complete cooling, and then flows into the stabilizing band 1, and finally is discharged through the electrolyte outlet 14. The differential pressure detection component liquid phase interface 13 and the differential pressure detection component gas phase interface 34 are both equipped with differential pressure transmitters or magnetic flap level gauges to monitor the pressure or liquid level within the tank. The two-stage washing water flow rate is controlled to be less than or equal to the water consumption of hydrogen production by electrolysis to maintain the electrolyte concentration.

Claims

1. An integrated tower-type hydrogen production gas-liquid processing device, characterized in that: The invention comprises a wave stabilization section (1), an electrolyte cooling section (2), a gas-liquid separation section (3), a gas washing section (4), a gas cooling section (5) and a droplet separation section (6) which are sequentially connected from bottom to top. Adjacent components are connected and fixed by flanges, fasteners and sealing gaskets. A wave stabilization device (11) is installed inside the wave stabilization section (1), an electrolyte connection port (12) is installed on the side wall, and an electrolyte discharge port (14) is installed on the bottom. A first tubular heat exchanger (23) is provided inside the electrolyte cooling section (2), and a side surface is provided with a first tubular heat exchanger (23) which is connected to the first tubular heat exchanger. The gas-liquid separation section (3) is provided with a first cooling medium inlet (21) and a first cooling medium outlet (22) connected to the heat exchanger (23), a dispersion disk (33) is provided inside the gas-liquid separation section (3), a gas rising device (32) is provided at the center of the dispersion disk (33), a tangential gas-liquid mixed flow inlet (31) is provided on the side of the gas-liquid separation section (3), a first-stage washing device and a second-stage washing device are provided from bottom to top inside the gas washing section (4), a capture filler (61) is provided inside the droplet separation section (6), and a gas discharge outlet (62) is provided at the top.

2. The integrated tower-type hydrogen production gas-liquid processing device according to claim 1 is characterized in that: The outer periphery of the wave stabilizing device (11) is fitted with the inner wall of the wave stabilizing section (1). The wave stabilizing device (11) is provided with a plurality of evenly distributed through holes. These through holes have regular geometric shapes and the same cross-sectional area and volume. The wave stabilizing device (11) is located above the electrolyte connection port (12).

3. The integrated tower-type hydrogen production gas-liquid processing device according to claim 1 is characterized in that: The outer wall of the stabilizing section (1) is provided with a differential pressure detection component liquid phase interface (13), and the outer wall of the gas-liquid separation section (3) is provided with a differential pressure detection component gas phase interface (34), and the differential pressure detection component gas phase interface (34) is located above the dispersion disk (33).

4. The integrated tower-type hydrogen production gas-liquid processing device according to claim 1, characterized in that: A baffle (24) is provided inside the first tubular heat exchanger (23), and the first cooling medium inlet (21) is located above the first cooling medium outlet (22).

5. The integrated tower-type hydrogen production gas-liquid processing device according to claim 1, characterized in that: The outer wall of the dispersion disk (33) is in contact with the inner wall of the gas-liquid separation section (3), and the gas-liquid mixed inlet (31) is lower than the dispersion disk (33).

6. The integrated tower-type hydrogen production gas-liquid processing device according to claim 1, characterized in that: The gas rising device (32) is composed of a hollow channel tube (321) at the bottom, a support rod (323) in the middle, and a liquid baffle plate (322) at the top, wherein a gas escape space is provided between the liquid baffle plate (322) and the hollow channel tube (321), and a rib plate (324) is welded between the support rod (323) and the hollow channel tube (321). The liquid baffle plate (322) is umbrella-shaped, and the opening area of the liquid baffle plate (322) is larger than the outer diameter of the hollow channel tube (321).

7. The integrated tower-type hydrogen production gas-liquid processing device according to claim 1, characterized in that: The primary washing device comprises a primary washing water inlet (41), a spray assembly (42) and a liquid collecting plate (43). The primary washing water inlet (41) is arranged on the outer wall of the gas washing section (4) and is connected to the spray assembly (42). The liquid collecting plate (43) is arranged below the spray assembly (42) and is fixed to the inner wall of the gas washing section (4). The liquid collecting plate (43) is provided with evenly distributed air holes.

8. The integrated tower-type hydrogen production gas-liquid processing device according to claim 1 or 7, characterized in that: The secondary washing device comprises a secondary washing water inlet (44), a spray structure (45) and a filler structure (46). The secondary washing water inlet (44) is arranged on the outer wall of the gas washing section (4) and is connected to the spray structure (45). The filler structure (46) is arranged below the spray structure (45).

9. The integrated tower-type hydrogen production gas-liquid processing device according to claim 1, characterized in that: A second tubular heat exchanger (53) is provided inside the gas cooling section (5), and a second cooling medium inlet (51) and a second cooling medium outlet (52) are provided on the outer wall of the gas cooling section (5), and the second cooling medium inlet (51) and the second cooling medium outlet (52) are in communication with the second tubular heat exchanger (53).

10. A processing method using the integrated tower-type hydrogen production gas-liquid processing device according to any one of claims 1 to 9, characterized in that: The invention comprises connecting the gas-liquid mixture outlet of the alkaline electrolytic cell with the gas-liquid mixed flow inlet (31), the gas-liquid mixture tangentially entering the gas-liquid separation section (3), separating under the action of centrifugal force to form an internal gas vortex and an external liquid vortex, the internal gas vortex spiraling upward, passing through the gas rising device (32) to enter the gas washing section (4), passing through the first-stage washing device and the second-stage washing device in sequence, completing bubble washing and deflection separation, removing alkaline mist, and the washed liquid entering the electrolyte cooling section (2), the washed gas passing through the second tubular heat exchanger (53), further removing saturated water vapor therein, and then rising through the capture filler (61), separating the droplets in the gas, completing gas drying, and finally being discharged from the gas discharge port (62) to enter the gas storage tank or the next process section; the external liquid vortex rotating downward along the cylinder wall into the electrolyte cooling section (2), fully exchanging heat with the cooling medium through the first tubular heat exchanger (23), completing cooling, and then flowing into the stabilizing section (1), and finally being discharged through the electrolyte discharge port (14).

Images