Gas-liquid two-phase separation device and solar hydrogen production system

Abstract

The present invention relates to the technical field of gas-liquid separation, and discloses a gas-liquid two-phase separation device and a solar hydrogen production system including the gas-liquid two-phase separation device. The gas-liquid two-phase separation device includes: a main body, inside which a wavy flow channel is formed, and a plurality of through structures are sequentially arranged along the length direction of the bottom of the main body; a hydrophobic component, which is arranged inside the wavy flow channel and includes a plurality of hydrophobic hook plates. Each bending position of the wavy flow channel is provided with a hydrophobic hook plate, and each hydrophobic hook plate and the inner wall of the wavy flow channel enclose a hydrophobic cavity, and the openings of each hydrophobic cavity all face the flowing direction of the fluid; a liquid drainage component, the liquid drainage component includes at least one liquid drainage structure. Among all the through structures, some through structures correspond to and communicate with the liquid drainage structure one by one, and the remaining through structures are each blocked by a blocking structure, or all the through structures correspond to and communicate with the liquid drainage structure one by one. This device has high separation efficiency and can discharge the liquid in time.

Description

Technical Field

[0001] The present invention relates to the technical field of gas-liquid separation, and particularly to a gas-liquid two-phase separation device and a solar hydrogen production system including the gas-liquid two-phase separation device. Background Art

[0002] At present, the corrugated plate gas-liquid separator commonly used in the solar hydrogen production process mainly consists of two parallel and relatively arranged corrugated plates, and a wavy flow channel is formed between the two corrugated plates. During operation, at the bending position of the wavy flow channel, since the inertial force acting on the liquid droplets is greater than the carrying shear force of the gas flow on them, the liquid droplets will break away from the gas flow, hit and adhere to the inner wall of the wavy flow channel. As the separation process progresses, the liquid droplets captured on the inner wall of the wavy flow channel continuously increase, and the liquid droplets accumulate to form a liquid film. Affected by its own gravity, the liquid film flows downward along the inner wall surface and is finally collected, completing the gas-liquid two-phase separation process.

[0003] The corrugated plate gas-liquid separator commonly used in the solar hydrogen production process at present mainly has the following defects:

[0004] 1), Low gas-liquid separation efficiency;

[0005] 2), The liquid separated inside the separator is discharged through a discharge structure, and the liquid cannot be discharged in time.

[0006] Therefore, how to overcome the above defects has become an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0007] To solve the above technical problems, the present invention provides a gas-liquid two-phase separation device with high gas-liquid separation efficiency and capable of timely discharging liquid, and a solar hydrogen production system including the gas-liquid two-phase separation device.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] The present invention provides a gas-liquid two-phase separation device, including: a main body, a wavy flow channel is formed inside the main body, and a plurality of through structures are sequentially arranged along the length direction of the bottom of the main body; a hydrophobic component, the hydrophobic component is arranged inside the wavy flow channel, the hydrophobic component includes a plurality of hydrophobic hook plates, the hydrophobic hook plates are arranged at each bending position of the wavy flow channel, and each hydrophobic hook plate and the inner wall of the wavy flow channel enclose a hydrophobic cavity, and the openings of each hydrophobic cavity all face the flow direction of the fluid; a liquid drainage component, the liquid drainage component includes at least one liquid drainage structure, among all the through structures, part of the through structures are in one-to-one correspondence and communication with the liquid drainage structure, and the remaining through structures are each blocked by a blocking structure, or all the through structures are in one-to-one correspondence and communication with the liquid drainage structure.

[0010] Preferably, the hydrophobic hook plate includes a flat plate and an inclined plate. The flat plate is connected to the inner wall of the corrugated flow channel through the inclined plate. The flat plate is parallel to the inner wall of the corresponding corrugated flow channel, and there is a first gap between the two to form the hydrophobic cavity. The connection position between the flat plate and the inclined plate is rounded.

[0011] Preferably, the gas-liquid two-phase separation device further includes a water baffle. The water baffle is arranged at the outlet end of the corrugated flow channel. The water baffle is connected to one inner wall of the corrugated flow channel, and there is a second gap between the water baffle and the other inner wall of the corrugated flow channel.

[0012] Preferably, two straight flow channels are further formed inside the main body. The two straight flow channels are respectively arranged at the inlet end and the outlet end of the corrugated flow channel, and the two straight flow channels are respectively communicated with the inlet end and the outlet end of the corrugated flow channel. Two connection joints respectively communicated with the two straight flow channels are arranged at the top of the main body, and a sealing member is detachably arranged inside each connection joint.

[0013] Preferably, an inlet joint and an outlet joint are respectively arranged on both sides of the main body. The inlet joint and the outlet joint are respectively communicated with the two straight flow channels.

[0014] Preferably, the main body includes a top plate, a bottom plate, a corrugated plate assembly, two straight plate assemblies and two side plates. The corrugated plate assembly includes two corrugated plates arranged in parallel and opposite to each other. The two straight plate assemblies are respectively arranged at both ends of the corrugated plate assembly. The straight plate assembly includes two straight plates arranged in parallel and opposite to each other, and one ends of the two straight plates are respectively connected to one ends of the two corrugated plates. The top plate and the bottom plate are arranged in parallel and opposite to each other, and the top plate and the bottom plate are respectively arranged at the top and the bottom of the corrugated plate assembly and the straight plate assembly. One ends of the two straight plates of each straight plate assembly far from the corrugated plate are connected through the side plate. The two corrugated plates and the top plate and the bottom plate enclose the corrugated flow channel, and each straight plate assembly and the top plate, the bottom plate and the side plate enclose the straight flow channel. The through structure is arranged on the bottom plate.

[0015] Preferably, the through structure is arranged at each bending position of the corrugated flow channel.

[0016] Preferably, the liquid discharge structure includes a liquid discharge pipe and a steam trap. The steam trap is arranged on the liquid discharge pipe.

[0017] The present invention also provides a solar hydrogen production system, which includes the gas-liquid two-phase separation device described above.

[0018] The present invention has achieved the following technical effects compared with the prior art:

[0019] The gas-liquid two-phase separation device provided by the present invention includes: a main body, inside which a wavy flow channel is formed, and a plurality of through structures are sequentially arranged along the length direction of the bottom of the main body; a hydrophobic component, which is arranged inside the wavy flow channel, the hydrophobic component includes a plurality of hydrophobic hook plates, and hydrophobic hook plates are arranged at each bending position of the wavy flow channel, and each hydrophobic hook plate and the inner wall of the wavy flow channel enclose a hydrophobic cavity, and the opening of each hydrophobic cavity faces the flow direction of the fluid; a liquid discharge component, the liquid discharge component includes at least one liquid discharge structure, among all the through structures, some through structures correspond to and communicate with the liquid discharge structure one by one, and the remaining through structures are blocked by a blocking structure respectively, or all the through structures correspond to and communicate with the liquid discharge structure one by one. By setting the hydrophobic hook plates, the gas-liquid separation efficiency of the gas-liquid two-phase separation device is effectively improved. By setting a plurality of through structures, during specific use, according to the need, the through structures at the corresponding positions are opened, and the separated liquid, that is, the water in the present invention, can be discharged in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the gas-liquid two-phase separation device provided in the embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the setting manner of the hydrophobic hook plates and through structures of the gas-liquid two-phase separation device provided in the embodiment of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the solar hydrogen production system provided in the embodiment of the present invention;

[0024] Description of reference numerals: 100, gas-liquid two-phase separation device; 1, wavy flow channel; 2, through structure; 3, hydrophobic cavity; 301, opening; 4, hydrophobic hook plate; 401, flat plate; 402, inclined plate; 5, water baffle; 6, straight flow channel; 7, connection joint; 8, inlet joint; 9, outlet joint; 10, top plate; 11, corrugated plate; 12, straight plate; 13, side plate; 14, U-shaped tube manometer; 15, liquid discharge pipeline; 16, hydrophobic valve; 17, steam generator; 18, reactor; 19, hydrogen storage device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] The object of the present invention is to provide a gas-liquid two-phase separation device with high gas-liquid separation efficiency and capable of timely discharging liquid, and a solar hydrogen production system including the gas-liquid two-phase separation device.

[0027] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Referring to Figures 1 - 2 As shown, the gas-liquid two-phase separation device 100 provided in this embodiment includes: a main body, a wavy flow channel 1 is formed inside the main body, and a plurality of through structures 2 are sequentially arranged along the length direction of the bottom of the main body; a hydrophobic component, the hydrophobic component is arranged inside the wavy flow channel 1, the hydrophobic component includes a plurality of hydrophobic hook plates 4, and a hydrophobic hook plate 4 is arranged at each bending position of the wavy flow channel 1, and each hydrophobic hook plate 4 and the inner wall of the wavy flow channel 1 enclose a hydrophobic cavity 3, and the openings 301 of each hydrophobic cavity 3 all face the flowing direction of the fluid; a liquid discharge component, the liquid discharge component includes at least one liquid discharge structure, among all the through structures 2, some through structures 2 correspond to and communicate with the liquid discharge structure one by one, and the remaining through structures 2 are each blocked by a blocking structure, or all the through structures 2 correspond to and communicate with the liquid discharge structure one by one. It should be noted that when some through structures 2 need to be opened, the sum of the number of liquid discharge structures and the number of blocking structures is equal to the number of through structures 2. When all through structures 2 need to be opened, the gas-liquid two-phase separation device 100 provided in this embodiment does not need to be provided with a blocking structure, and the number of through structures 2 is the same as the number of liquid discharge structures.

[0029] The smaller the width of the wavy flow channel 1, the better the separation effect. The presence of the hydrophobic hook plate 4 on the one hand is equivalent to partially reducing the width of the wavy flow channel 1, thereby improving the separation efficiency. On the other hand, during operation, local vortices will be generated in the hydrophobic cavity 3 formed by the hydrophobic hook plate 4 and the inner wall of the wavy flow channel 1. These vortices are convenient for the separation of small-diameter liquid droplets, thereby improving the separation efficiency of small liquid droplets and further increasing the overall separation efficiency. In addition, by providing a plurality of through structures 2, the separated liquid can be discharged in time.

[0030] Specifically, the hydrophobic hook plate 4 includes a flat plate 401 and an inclined plate 402. The flat plate 401 is connected to the inner wall of the wavy flow channel 1 through the inclined plate 402. The flat plate 401 is parallel to the inner wall of the corresponding wavy flow channel 1, and there is a first gap between the two to form a hydrophobic cavity 3.

[0031] Further, the bending position of the hydrophobic hook plate 4 is rounded off. Specifically, the connection position between the flat plate 401 and the inclined plate 402, that is, the bending position of the hydrophobic hook plate 4, is rounded off. Secondary entrainment means that as the gas flows at high speed, the liquid film originally attached to the plate wall is torn, resulting in smaller-diameter liquid droplets being mixed into the steam-water mixture. By rounding off the bending position of the hydrophobic hook plate 4, secondary entrainment can be reduced, and the pressure drop is also greatly reduced.

[0032] Specifically, a through-structure 2 is provided at each bending position of the wavy flow channel 1.

[0033] In some embodiments, as Figure 2 shown, the gas-liquid separation device 100 further includes a water baffle 5. The water baffle 5 is arranged at the outlet end of the wavy flow channel 1. The water baffle 5 is connected to one inner wall of the wavy flow channel 1, and there is a second gap between the water baffle 5 and the other inner wall of the wavy flow channel 1.

[0034] In some embodiments, as Figure 2 shown, two straight flow channels 6 are further formed inside the main body. The two straight flow channels 6 are respectively arranged at the inlet end and the outlet end of the wavy flow channel 1, and the two straight flow channels 6 are respectively communicated with the inlet end and the outlet end of the wavy flow channel 1.

[0035] Further, as Figure 1 shown, in order to facilitate the measurement of the pressure drop, two connection joints 7 respectively communicated with the two straight flow channels 6 are arranged at the top of the main body, and a plugging member is detachably arranged inside each connection joint 7. As Figure 3 shown, when the pressure drop needs to be measured, the two ends of the U-shaped tube pressure gauge 14 or other equipment are respectively communicated with the two connection joints 7. When the measurement is not required, the two connection joints 7 are sealed with two plugging members respectively to prevent the steam from flowing out.

[0036] In some embodiments, as Figure 2 shown, an inlet joint 8 and an outlet joint 9 are respectively arranged on both sides of the main body. The inlet joint 8 and the outlet joint 9 are respectively communicated with the two straight flow channels 6. During the specific use process, the fluid to be separated enters the main body from the inlet joint 8, and the separated gas is discharged from the main body through the outlet joint 9.

[0037] In some embodiments, as Figures 1 - 2As shown in the figure, the main body includes a top plate 10, a bottom plate, a corrugated plate assembly, two straight plate assemblies, and two side plates 13. The corrugated plate assembly includes two corrugated plates 11 that are parallel and oppositely arranged. The two straight plate assemblies are respectively arranged at both ends of the corrugated plate assembly. The straight plate assembly includes two straight plates 12 that are parallel and oppositely arranged, and one end of each of the two straight plates 12 is respectively connected to one end of the two corrugated plates 11. The top plate 10 and the bottom plate are parallel and oppositely arranged, and the top plate 10 and the bottom plate are respectively arranged at the top and bottom of the corrugated plate assembly and the straight plate assembly. The two straight plates 12 of each straight plate assembly that are far from the corrugated plate 11 are connected by the side plates 13. The two corrugated plates 11 and the top plate 10 and the bottom plate enclose a wavy flow channel 1, and each straight plate assembly and the top plate 10, the bottom plate, and the side plates 13 enclose a straight flow channel 6. A through structure 2 is arranged on the bottom plate.

[0038] Further, the distance between the two corrugated plates 11, the distance between the two straight plates 12 of each straight plate assembly, the inner diameter of the inlet joint 8, and the inner diameter of the outlet joint 9 are all equal to the outlet inner diameter of the steam generator 17, which can ensure high separation efficiency and low pressure drop as much as possible under the condition of little speed change.

[0039] Specifically, the outlet diameter of the steam generator 17 is 25 mm. Correspondingly, the distance between the two corrugated plates 11, the distance between the two straight plates 12 of each straight plate assembly, the inner diameter of the inlet joint 8, and the inner diameter of the outlet joint 9 are all 25 mm.

[0040] Specifically, the corrugated plate 11 is a stainless steel corrugated plate 11. Each corrugated plate includes six inverted V-shaped plates arranged side by side and connected in sequence, and each inverted V-shaped plate is made of stainless steel. The inverted V-shaped plate includes two connecting plates, one end of the two connecting plates is connected, and the other end is away from each other.

[0041] Specifically, the through structure 2 is a through hole, and the number of through structures 2 is 12. All the through structures 2 are sequentially divided into a first through group, a second through group, a third through group, and a fourth through group. The diameters of the through structures 2 in the first through group, the second through group, the third through group, and the fourth through group are different and decrease in sequence. The first through group includes 8 first through structures with equal diameters, the second through assembly includes 1 second through structure, the third through assembly includes 1 third through structure, and the fourth through group includes 2 fourth through structures. The diameters of the first through structure, the second through structure, the third through structure, and the fourth through structure decrease. It should be noted that the purpose of dividing all the through structures 2 into the first through structure, the second through structure, the third through structure, and the fourth through structure is to facilitate the distinction of the through structures 2 with different diameters.

[0042] In some embodiments, such as Figure 3As shown in the figure, the liquid drainage structure includes a liquid drainage pipeline 15 and a steam trap 16, and the steam trap 16 is arranged on the liquid drainage pipeline 15. During the specific use process, when the separated water volume is less than the preset water volume of the steam trap 16, the steam trap 16 automatically closes to reduce the influence on the internal flow field. On the contrary, when the separated water volume is greater than the preset water volume of the steam trap 16, the steam trap 16 automatically opens.

[0043] As Figure 3 shown in the figure, the present invention further provides a solar hydrogen production system, which includes the gas-liquid two-phase separation device 100 described in any one of the above embodiments.

[0044] Furthermore, the solar hydrogen production system further includes a steam generator 17, a reactor 18, and a hydrogen storage device 19, and the steam generator 17, the gas-liquid two-phase separation device 100, the reactor 18, and the hydrogen storage device 19 are connected in sequence.

[0045] Specifically, the steam generator 17 is connected to the inlet joint 8 of the gas-liquid two-phase separation device 100, and the reactor 18 is connected to the outlet joint 9 of the gas-liquid two-phase separator.

[0046] It should be noted that the specific structures of the steam generator 17, the reactor 18, and the hydrogen storage device 19 all belong to the prior art and are not the focus of the protection of the present invention, so they will not be elaborated here. In addition, it should also be noted that the gas-liquid two-phase separation device 100 provided by the present invention is not limited to separating the gas-liquid two-phase in the solar hydrogen production process, but also applicable to other occasions where gas-liquid two-phase separation is required.

[0047] In this specification, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A gas-liquid two-phase separation device, characterized in that, Comprising: A main body, inside which a wavy flow channel is formed, and a plurality of through structures are sequentially arranged along the length direction of the bottom of the main body; A hydrophobic component, which is arranged inside the wavy flow channel. The hydrophobic component includes a plurality of hydrophobic hook plates. The hydrophobic hook plates are arranged at each bending position of the wavy flow channel. Each hydrophobic hook plate and the inner wall of the wavy flow channel enclose a hydrophobic cavity, and the openings of each hydrophobic cavity face the flowing direction of the fluid; A liquid drainage component, which includes a liquid drainage structure. All the through structures correspond to and communicate with the liquid drainage structure one by one. The hydrophobic hook plate includes a flat plate and an inclined plate. The flat plate is connected to the inner wall of the wavy flow channel through the inclined plate, and the connection position between the flat plate and the inclined plate is rounded. The liquid drainage structure includes a liquid drainage pipe and a hydrophobic valve, and the hydrophobic valve is arranged on the liquid drainage pipe.

2. The gas-liquid two-phase separation device according to claim 1, wherein, The flat plate is parallel to the inner wall of the corresponding wavy flow channel, and there is a first gap between the two to form the hydrophobic cavity.

3. The gas-liquid two-phase separation device according to claim 1, wherein It further includes a water baffle, which is arranged at the outlet end of the wavy flow channel. The water baffle is connected to one inner wall of the wavy flow channel, and there is a second gap between the water baffle and the other inner wall of the wavy flow channel.

4. The gas-liquid two-phase separation device according to claim 1, characterized in that, Two straight flow channels are further formed inside the main body. The two straight flow channels are respectively arranged at the inlet end and the outlet end of the wavy flow channel, and the two straight flow channels are respectively connected to the inlet end and the outlet end of the wavy flow channel. Two connection joints respectively communicating with the two straight flow channels are arranged at the top of the main body, and a plugging member is detachably arranged inside each connection joint.

5. The gas-liquid two-phase separation device according to claim 4, characterized in that An inlet joint and an outlet joint are respectively arranged on both sides of the main body, and the inlet joint and the outlet joint are respectively connected to the two straight flow channels.

6. The gas-liquid two-phase separation device according to claim 4, wherein, The main body includes a top plate, a bottom plate, a corrugated plate assembly, two straight plate assemblies and two side plates. The corrugated plate assembly includes two corrugated plates arranged in parallel and opposite to each other. The two straight plate assemblies are respectively arranged at both ends of the corrugated plate assembly. The straight plate assembly includes two straight plates arranged in parallel and opposite to each other, and one ends of the two straight plates are respectively connected to one ends of the two corrugated plates. The top plate and the bottom plate are arranged in parallel and opposite to each other, and the top plate and the bottom plate are respectively arranged at the top and the bottom of the corrugated plate assembly and the straight plate assembly. The two straight plates of each straight plate assembly far from the corrugated plate are connected through the side plates. The two corrugated plates and the top plate and the bottom plate enclose the wavy flow channel, and each straight plate assembly and the top plate, the bottom plate and the side plates enclose the straight flow channel. The through structures are arranged on the bottom plate.

7. The gas-liquid two-phase separation device according to claim 1, characterized in that, The through structures are arranged at each bending position of the wavy flow channel.

8. A solar hydrogen production system, characterized in that, Comprising the gas-liquid two-phase separation device according to any one of claims 1-7.

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