Gas-liquid separator and hydrogen production system

Abstract

The utility model discloses a gas-liquid separator and a hydrogen production system, the gas-liquid separator comprises a cylinder and a separation assembly, the cylinder is provided with a separation cavity, a gas-liquid mixture inlet, a gas outlet and a liquid outlet, and the separation cavity is communicated with the gas-liquid mixture inlet, the gas outlet and the liquid outlet. The gas-liquid mixture inlet and the gas outlet are formed in the top of the barrel, and the liquid outlet is formed in the bottom of the barrel. The separation assembly is arranged in the separation cavity, a separation flow channel is arranged in the separation assembly, and the separation flow channel is communicated with the gas-liquid mixture inlet and the liquid outlet and is communicated with the gas outlet and the liquid outlet. According to the gas-liquid separator, the gas-liquid mixture is subjected to gas-liquid separation in the separation flow channel, so that the retention time of the gas-liquid mixture in the separation cavity is longer, effective separation of gas and liquid is facilitated, and the gas-liquid separation effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydrogen production technical field especially relates to a gas -liquid separator and hydrogen production system. BACKGROUND

[0002] In the related art, in the horizontal gas-liquid separation system, due to the length and volume of the equipment limit, the residence time of gas-liquid mixture in the separator is short, cannot carry out the full sedimentation separation, leads to the separation effect of gas-liquid mixture is poor. SUMMARY

[0003] The utility model embodiment provides a kind of gas-liquid separator and hydrogen production system to solve at least one technical problem existing above.

[0004] The utility model embodiment provides a kind of gas-liquid separator, including cylinder and separation component, the cylinder is equipped with separation cavity, gas-liquid mixture import, gas outlet and liquid outlet, the separation cavity with the gas-liquid mixture import, the gas outlet and the liquid outlet are communicated.

[0005] The gas-liquid mixture import and the gas outlet are arranged at the top of the cylinder, and the liquid outlet is arranged at the bottom of the cylinder.

[0006] The separation component is arranged in the separation cavity, and a separation flow channel is arranged in the separation component.

[0007] The above-mentioned gas-liquid separator, by making gas-liquid mixture carry out gas-liquid separation in separation flow channel, makes the residence time of gas-liquid mixture in separation cavity longer, so as to facilitate the effective separation of gas and liquid, improves gas-liquid separation effect.

[0008] In some embodiments, the separation component includes a distribution plate and a baffle, the distribution plate is arranged along the length direction of the cylinder, the baffle is arranged on the distribution plate and faces the liquid outlet, and the distribution plate and the baffle form the meandering separation flow channel.

[0009] In some embodiments, the length of the distribution plate is 75% of the length of the cylinder.

[0010] In some embodiments, the baffle includes a plurality of first baffles, the plurality of first baffles are arranged on the distribution plate in the length direction of the distribution plate, and in the direction perpendicular to the top to the bottom of the cylinder, the first baffle and the inner wall surface of the cylinder have a spacing.

[0011] In some embodiments, the maximum distance between the first baffle and the inner wall of the cylinder is thirty percent of the diameter of the cylinder.

[0012] In some embodiments, the baffle comprises a plurality of second baffles, each two second baffles being spaced apart along the length direction of the cylinder, and the first baffle and the second baffles being arranged in sequence along the length direction of the distribution plate.

[0013] In some embodiments, the distance between two second baffles is thirty percent of the diameter of the cylinder.

[0014] In some embodiments, the first baffle and the second baffles are arranged in sequence along the length direction of the distribution plate.

[0015] In some embodiments, the liquid outlet is arranged at the middle position along the length direction of the cylinder.

[0016] In some embodiments, the gas-liquid separator further comprises a demisting assembly, the demisting assembly comprising a shell, a gas equalization plate and a demisting screen, the shell forming a receiving cavity and being formed with an opening along the length direction of the cylinder, the gas equalization plate being arranged at the opening, the demisting screen being arranged at the side of the gas equalization plate away from the opening, the shell being formed with a liquid outlet hole towards the wall surface of the liquid outlet, the liquid outlet hole being arranged below the demisting screen.

[0017] In some embodiments, the gas-liquid separator further comprises a liquid level gauge device for detecting the liquid surface height in the cylinder.

[0018] The hydrogen production system provided by the embodiments of the present application comprises the gas-liquid separator of any one of the above embodiments.

[0019] The hydrogen production system makes the gas-liquid mixture perform gas-liquid separation in the separation flow channel, prolongs the residence time of the gas-liquid mixture in the separation cavity, and thus facilitates effective separation of the gas and the liquid and improves the gas-liquid separation effect.

[0020] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the following drawings, in which:

[0022] Figure 1 is a sectional view of the gas-liquid separator of the embodiments of the present application;

[0023] Figure 2 is Figure 1 a sectional view of the gas-liquid separator in the

[0024] Figure 3 is Figure 1 a sectional view of the gas-liquid separator in the

[0025] Figure 4 is a structural schematic view of the first baffle plate according to the embodiment of the present application;

[0026] Figure 5 is a structural schematic view of the second baffle plate according to the embodiment of the present application.

[0027] Main element symbol explanation:

[0028] cylinder 1, gas-liquid mixture inlet 2, gas outlet 3, liquid outlet 4, liquid level meter device 5, separation assembly 6, baffle plate 60, first baffle plate 61, notch 611, second baffle plate 62, distribution plate 63, demisting assembly 7, accommodating cavity 71, uniform gas plate 72, demisting wire mesh 73, opening 74, shell 75, separation cavity 9, separation flow channel 90, first separation zone 91, second separation zone 92, gas-liquid mixing zone 101, liquid phase zone 102, gas-liquid separator 100. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used to explain the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of the present application, it is understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0031] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected.It can be mechanical connection, also can be electrical connection.It can be directly connected, also can be indirectly connected through intermediate medium, can be the communication inside two elements or the interaction relationship of two elements.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.

[0032] In the utility model, unless there is definite stipulation and limitation, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them.Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] The disclosure herein provides many different implementations or examples to implement different structures of the utility model.For the purpose of simplifying the disclosure of the utility model, the components and settings of specific examples are described herein.Of course, they are only examples, and the purpose is not to limit the utility model.In addition, the utility model can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various implementations and / or settings discussed.In addition, the utility model provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0034] The separation mode of the gas-liquid separator mainly has gravity sedimentation, vortex separation, screen separation and the like structure form, vortex separation separates gas and liquid under the action of centrifugal force by using spiral channel, but its structure is complex, the processing capacity is small, and it is difficult to use in large processing capacity, the existing alkaline electrolytic water hydrogen production mainly adopts horizontal separator with gravity sedimentation principle, its equipment volume is large, the structure is simple, and it can meet the occasion with large processing capacity.

[0035] In the related art, the gas-liquid separator in the alkaline electrolytic water hydrogen production system adopts a horizontal structure, and baffles, demisting plates and outlet wire mesh demisters are arranged inside. In the process of gas-liquid separation in the horizontal gas-liquid separator, only the baffles and demisting plates arranged at the gas-liquid mixture inlet are used to separate the gas-liquid mixture, which results in large fluid fluctuation at the gas-liquid mixture inlet. As the liquid level in the separator rises, the first separation zone decreases, and due to the limited length and volume of the equipment, the residence time of the gas-liquid mixture in the separator is short, which cannot achieve sufficient sedimentation separation, resulting in low separation efficiency and a large amount of gas in the liquid outlet.

[0036] Please refer to Figure 1 The gas-liquid separator 100 provided by the embodiment of the present application comprises a cylinder 1 and a separation assembly 6. The cylinder 1 is provided with a separation cavity 9, a gas-liquid mixture inlet 2, a gas outlet 3 and a liquid outlet 4. The separation cavity 9 is in communication with the gas-liquid mixture inlet 2, the gas outlet 3 and the liquid outlet 4.

[0037] The gas-liquid mixture inlet 2 and the gas outlet 3 are arranged at the top of the cylinder 1, and the liquid outlet 4 is arranged at the bottom of the cylinder 1.

[0038] The separation assembly 6 is arranged in the separation cavity 9, and a separation flow channel 90 is arranged in the separation assembly 6. The separation flow channel 90 is in communication with the gas-liquid mixture inlet 2 and the liquid outlet 4, and in communication with the gas outlet 3 and the liquid outlet 4.

[0039] The gas-liquid separator 100 described above separates gas and liquid through the separation flow channel 90, so that the gas-liquid mixture stays in the separator for a longer time, thereby facilitating effective separation of gas and liquid and improving the gas-liquid separation effect.

[0040] Specifically, under the action of gravity, the liquid will be subjected to a large gravitational force when flowing together with the gas, and the liquid will generate a downward speed, while the gas still flows in the original direction. Therefore, in the gravitational field, the liquid and the gas have a tendency to separate, and thus the gas-liquid separation can be achieved by gravity.

[0041] The gravity type gas-liquid separator 100 needs a relatively large internal space to utilize the gravitational force to make the liquid sink and the gas rise, thereby achieving natural separation of gas and liquid.

[0042] The gas-liquid separator 100 comprises a cylinder 1 and a separation assembly 6. The cylinder 1 is provided with a separation cavity 9, a gas-liquid mixture inlet 2, a gas outlet 3 and a liquid outlet 4. The separation cavity 9 is in communication with the gas-liquid mixture inlet 2, the gas outlet 3 and the liquid outlet 4. The gas-liquid mixture enters the separation cavity 9 through the gas-liquid mixture inlet 2 to separate gas and liquid. The separated gas is discharged through the gas outlet 3, and the liquid is discharged through the liquid outlet 4.

[0043] In order to improve the gas-liquid separation effect, a separation flow channel 90 is arranged in the separation chamber 9, the separation flow channel 90 is communicated with the gas-liquid mixture inlet 2 and the liquid outlet 4, and communicated with the gas outlet 3 and the liquid outlet 4. After the gas-liquid mixture enters the separation chamber 9, the gas-liquid mixture can pass through the separation flow channel 90 in the separation chamber 9, the residence time of the gas-liquid mixture in the separation chamber 9 can be prolonged, the gravity sedimentation effect can be increased, and thus the separation effect can be improved.

[0044] As shown in Figure 1 and Figure 2 , the top of the cylinder body 1 is the upper part in the figure, and the bottom of the cylinder body 1 is the lower part in the figure. The length direction of the cylinder body 1 is the front-rear direction in the figure.

[0045] In some embodiments, the separation assembly 6 includes a distribution plate 63 arranged along the length direction of the cylinder body 1 and a baffle plate 60 arranged on the distribution plate 63 and facing the liquid outlet 4, and the separation flow channel 90 is formed between the distribution plate 63 and the baffle plate 60.

[0046] In this way, the separation flow channel 90 can prolong the residence time of the gas-liquid mixture and increase the gravity sedimentation effect.

[0047] Specifically, the separation assembly 6 includes a distribution plate 63 arranged along the length direction of the cylinder body 1, so that after the gas-liquid mixture enters the separation chamber 9 through the gas-liquid mixture inlet 2, the gas-liquid mixture collides with the upper surface of the distribution plate 63 under the action of gravity and inertial force, most of the liquid in the gas-liquid mixture is uniformly distributed on the distribution plate 63 after sedimentation, and the remaining small amount of liquid flows into the separation flow channel 90 with the gas to continue separation.

[0048] The separation flow channel 90 is formed between the distribution plate 63 and the baffle plate 60, and when the gas-liquid mixture flows, if it is blocked by the baffle plate 60, the gas will be deflected due to the change of flow direction, and the liquid will continue to flow in the original direction due to the action of inertia. In this way, the liquid will adhere to the blocking wall and collect together downward due to the action of gravity.

[0049] Further, as shown in Figure 2 , the cylinder body 1 is divided into a first separation zone 91 and a second separation zone 92 in the direction from the top to the bottom of the cylinder body 1, the upper half close to the gas-liquid mixture inlet 2 is the first separation zone 91, and the lower half close to the liquid outlet 4 is the second separation zone 92.

[0050] In the second separation zone 92, a part close to the distribution plate 63 is a gas-liquid mixing zone 101, the separated liquid is collected to form a liquid phase zone 102 from the bottom of the cylinder body 1, and a part of the baffle plate 60 is located in the liquid. The distribution plate 63 and the baffle plate 60 are combined to stabilize the liquid level and reduce the liquid level fluctuation.

[0051] In some embodiments, the length of the distribution plate 63 is seventy-five percent of the length of the cylinder 1.

[0052] This increases the contact area between the gas-liquid mixture and the distribution plate 63, thereby improving the gas-liquid separation effect.

[0053] Specifically, the distribution plate 63 is a long, flat plate. It is fixedly connected to the cylinder 1 on both sides in the width direction. The length of the distribution plate 63 can reach 75% of the length of the cylinder 1, thereby increasing the separation contact surface and distributing the liquid. The distribution plate 63 has gaps at both ends along its length with the inner wall of the cylinder 1, facilitating the flow of liquid distributed on the distribution plate 63 downwards and allowing any insufficiently separated gas-liquid mixture to enter the separation channel 90.

[0054] In some embodiments, the baffle 60 includes a plurality of first baffles 61, which are spaced apart on the distribution plate 63 along the length of the distribution plate 63. Along the direction perpendicular to the top to the bottom of the cylinder 1, the first baffles 61 are spaced apart from the inner wall surface of the cylinder 1.

[0055] Thus, a separation channel 90 can be formed by the first baffle 61 and the distribution plate 63 to separate the gas-liquid mixture.

[0056] Specifically, multiple first baffles 61 are spaced apart on the distribution plate 63 along its length. The spaces between the multiple first baffles 61 and between the first baffles 61 and the inner wall of the cylinder 1 form a separation channel 90. By changing the distance between the first baffles 61 and the inner wall of the cylinder 1, a tortuous or meandering separation channel 90 can be formed, thereby effectively extending the distance the fluid flows within it and improving the gas-liquid separation effect.

[0057] In some embodiments, the maximum distance L1 between the first baffle 61 and the inner wall surface of the cylinder 1 is 30 percent of the diameter of the cylinder 1.

[0058] In this way, the flow rate of the fluid passing through the first baffle 61 and the inner wall of the cylinder 1 can be stabilized, which is beneficial to gas-liquid separation.

[0059] Specifically,

[0060] like Figure 2 and Figure 4 As shown, the gas-liquid separator 100 can have different sizes and models depending on the volume or flow rate of the gas-liquid mixture separated by the gas-liquid separator 100. The top of the first baffle 61 is fixedly connected to the distribution plate 63, and the width of the first baffle 61 remains unchanged on both sides in the left-right direction.

[0061] Thus, the distance between the two sides of the first baffle 61 and the inner wall of the cylinder 1 is different from the top to the bottom of the first baffle 61, wherein the maximum distance L1 between the first baffle 61 and the inner wall of the cylinder 1 is thirty percent of the diameter of the cylinder 1. The gas-liquid mixture can flow at a moderate speed when passing through the space between the first baffle 61 and the inner wall of the cylinder 1, thereby avoiding large fluctuations in the liquid in the liquid phase zone 102, and thus stabilizing the flow rate of the fluid flowing in the separation flow channel 90, which is conducive to gas-liquid separation.

[0062] Optionally, the first baffle 61 and the distribution plate 63 are connected by welding, and the top of the first baffle 61 has a protrusion for facilitating welding with the distribution plate 63.

[0063] Optionally, the bottom of the first baffle 61 is welded and fixed to the inner wall of the cylinder 1. Specifically, the bottom of the first baffle 61 is arc-shaped and has the same curvature as the inner wall of the cylinder 1, and the bottom of the first baffle 61 can have a gap of 1-2 mm with the inner wall of the cylinder 1, so that the bottom of the first baffle 61 can be welded to the inner wall of the cylinder 1.

[0064] In the illustrated embodiment, the bottom of the first baffle 61 has a notch 611, so that when it is necessary to completely empty the liquid in the separation chamber 9, the liquid at the bottom of the first baffle 61 can be discharged through the notch 611, avoiding the accumulation of liquid at the bottom of the first baffle 61.

[0065] Please refer to Figure 3 In some embodiments, the baffle 60 includes a plurality of second baffles 62, and every two second baffles 62 are arranged in parallel along the length direction of the cylinder 1, and the first baffle 61 and the second baffles 62 are arranged in sequence along the length direction of the distribution plate 63.

[0066] Thus, by combining the first baffle 61 and the second baffle 62, a winding separation flow channel 90 can be formed.

[0067] Specifically, every two second baffles 62 of the plurality of second baffles 62 are arranged in parallel along the length direction of the cylinder 1, so that the fluid formed by the gas-liquid mixture can pass between the two second baffles 62.

[0068] As shown in Figure 2 and Figure 5 The top of the second baffle 62 is fixedly connected to the distribution plate 63, and is fixedly connected to the inner wall of the cylinder 1 on one side in the left-right direction and is spaced apart from the adjacent second baffle 62 on the other side. The side of the second baffle 62 fixedly connected to the inner wall of the cylinder 1 is arc-shaped and has the same curvature as the inner wall of the cylinder 1.

[0069] Optionally, the side surface of the second baffle 62 can have a gap of 1-2 mm with the inner wall surface of the cylinder 1, so as to facilitate welding of the side surface of the second baffle 62 with the inner wall surface of the cylinder 1.

[0070] As shown in FIG. 1, the first baffle 61 and the second baffle 62 are arranged alternately, which makes the distance of the separation flow channel 90 longer, thereby prolonging the residence time of the gas-liquid mixture in the separation flow channel 90 and improving the gas-liquid separation effect. Figure 3

[0071] In the illustrated embodiment, the first baffle 61 and the two second baffles 62 are arranged alternately, and the first baffle 61 and the second baffles 62 are symmetrically arranged along the symmetry axis of the distribution plate 63 in the length direction. The distance between the two sides of the first baffle 61 and the inner wall of the cylinder 1 is equal. In this way, only the sizes of the first baffle 61 and the second baffle 62 need to be designed, and the plurality of first baffles 61 and the plurality of second baffles 62 can be adapted to be installed at different positions in the separation chamber 9. Thus, the machining and installation of the components inside the gas-liquid separator 100 are facilitated.

[0072] When the gas-liquid mixture enters the separation flow channel 90, it first collides with the first baffle 61 and flows to the second baffle 62 through the space between the two sides of the first baffle 61 and the cylinder 1. The gas-liquid mixture collides with the second baffle 62, further causing the liquid to settle.

[0073] At the same time, the gas-liquid mixture collects from the space between the two sides of the first baffle 61 and the cylinder 1 to the center of the space between the two second baffles 62, which can increase the flow rate of the gas-liquid mixture and increase the separation efficiency.

[0074] Through the arrangement of the separation assembly 6, the residence time of the gas-liquid mixture in the separation chamber 9 is further increased. After the gas-liquid mixture is separated by each group of baffles 60, the liquid in the gas is further separated and settled into the liquid phase area 102, and the gas containing a small amount of liquid enters the next baffle 60 for further separation, until the larger diameter droplets are completely separated. At this time, the gas containing a small amount of liquid is returned to the first separation area 91.

[0075] In some embodiments, the distance L3 between the adjacent first baffle 61 and the second baffle 62 is 30%-40% of the diameter of the cylinder 1.

[0076] In this way, the fluid can flow more smoothly in the separation flow channel 90.

[0077] ​Specifically, the fluid collides with the first baffle 61 or the second baffle 62 in the separation flow channel 90 and changes direction to continue flowing. If the distance L3 between the first baffle 61 and the second baffle 62 is too far, the baffling effect will be poor and the separation efficiency will not be improved well. If the distance L3 between the first baffle 61 and the second baffle 62 is too close, the fluid will be subjected to greater resistance when passing through the channel between the baffles 60. This can cause an increase in fluid pressure loss, thereby reducing the overall efficiency of the system. In addition, too close distance between multiple baffles 60 can increase the complexity and manufacturing cost of the separator.

[0078] Therefore, the distance L3 between the adjacent first baffle 61 and the second baffle 62 is between 30%-40% of the diameter of the cylinder 1. For example, if the diameter of the cylinder 1 is D, then L3 can be 30% D, 31% D, 32% D, 33% D, 34% D, 35% D, 36% D, 37% D, 38% D, 39% D, or 40% D, or L3 is any other value in the range of [30% D, 40% D]. In some embodiments, the distance L2 between the two second baffles 62 is 30% of the diameter of the cylinder 1.

[0079] In this way, the flow rate of the fluid passing between the two second baffles 62 can be stabilized, which is beneficial for gas-liquid separation.

[0080] Specifically, the gas-liquid separator 100 can have different sizes and models according to the volume or flow rate of the gas-liquid mixture to be separated. The distance L2 between the two second baffles 62 is 30% of the diameter of the cylinder 1, which can prevent the flow rate of the gas-liquid mixture from being too fast when flowing through the space between the two second baffles 62, thereby avoiding large fluctuations in the liquid in the liquid phase zone 102. In this way, the flow rate of the fluid flowing in the separation flow channel 90 can be stabilized, which is beneficial for gas-liquid separation.

[0081] In some embodiments, the liquid outlet 4 is arranged at a middle position in the length direction of the cylinder 1.

[0082] In this way, the separated liquid can be smoothly discharged, thereby improving the separation efficiency.

[0083] Specifically, the gas-liquid mixture is separated in the separation chamber 9, and the final liquid is collected in the lower half of the separation chamber 9. Arranging the liquid outlet 4 at a middle position at the bottom can ensure that the separated liquid can be smoothly discharged, thereby improving the separation efficiency.

[0084] At the same time, since multiple baffles 60 are arranged on both sides of the liquid outlet 4, the liquid level near the liquid outlet 4 has small fluctuations, which can effectively prevent the discharged liquid from being mixed with gas and the like. In this way, the quality of the discharged liquid can be ensured.

[0085] In addition, compared with the position of the bottom edge or one side, the liquid outlet 4 is arranged at the middle position in the length direction of the cylinder 1, which is more conducive to the smooth flow of the liquid. In this way, the risk of outlet blockage caused by liquid accumulation can be reduced, thereby ensuring the continuous and stable operation of the separator.

[0086] Please refer to Figure 1 and Figure 2 In some embodiments, the gas-liquid separator 100 further comprises a demisting assembly 7, which comprises a shell 75, a gas equalization plate 72 and a demisting screen 73. The shell 75 forms a receiving cavity 71 and is formed with an opening 74 in the length direction of the cylinder 1. The gas equalization plate 72 is arranged at the opening 74, and the demisting screen 73 is arranged on the side of the gas equalization plate 72 away from the opening 74. The shell 75 is provided with a liquid outlet hole on the wall surface facing the liquid outlet 4, and the liquid outlet hole is arranged below the demisting screen 73.

[0087] In this way, the liquid carried in the gas flowing to the gas outlet 3 can be further separated, thereby improving the quality of the separated gas.

[0088] Specifically, the gas separated by the separation assembly 6 returns to the first separation zone 91 in the separation cavity 9, and then enters the receiving cavity 71 by passing through the gas equalization plate 72 and the demisting screen 73 in turn from the opening 74 of the demisting assembly 7.

[0089] The demisting screen 73 is composed of fine metal wires or non-metal fibers. The fine screen can effectively intercept the liquid droplets remaining in the gas. When the liquid droplets come into contact with the screen, due to the fine structure of the screen, the liquid droplets are intercepted and adhere to the screen. As the liquid droplets accumulate on the screen, they fall to the liquid outlet hole below the demisting screen 73 under the action of gravity and flow back to the liquid phase zone 102 through the distribution plate 63.

[0090] The gas equalization plate 72 comprises a plurality of slats composed of pipe holes. When the gas flows through the pipe holes, it can be uniformly distributed to facilitate the separation of the liquid in the demisting screen 73.

[0091] As shown in Figure 1 The shell 75 is formed with two openings 74 in the length direction of the cylinder 1, respectively. Two gas equalization plates 72 are arranged at each opening 74, and the demisting screen 73 is fixed between the two gas equalization plates 72. In this way, the gas after the gas equalization plate 72 enters the demisting screen 73 uniformly, and the smaller diameter liquid droplets in the gas are further separated, which can effectively control the liquid content in the gas outlet 3, thereby improving the quality of the gas.

[0092] In one embodiment, the shell 75 is provided with three rows of liquid outlets in the positions corresponding to the demisting wire mesh 73, which are arranged in equilateral triangle with a center distance of 15 mm and a diameter of 8 mm, for discharging the condensed liquid left on the demisting wire mesh 73. It can be understood that the gas in the separation chamber 9 can enter the containing chamber 71 through the liquid outlets, but since the liquid outlets are arranged directly below the demisting wire mesh 73, the gas entering the containing chamber 71 through the liquid outlets can still separate the liquid in the demisting wire mesh 73, so that the effect of the demisting assembly 7 can be ensured to be stable.

[0093] In some embodiments, the gas-liquid separator 100 further comprises a liquid level gauge device 5 for detecting the liquid level in the cylinder 1.

[0094] In this way, the liquid level gauge device 5 can detect the liquid level in the gas-liquid separator 100, and the fluctuation of the liquid level can be reduced by the distribution plate 63 and the baffle, so that the accuracy of the liquid level detection can be improved.

[0095] Specifically, by arranging the separation assembly 6, the liquid in the liquid phase area 102 can be buffered, so that the fluctuation of the liquid level does not affect the detection of the liquid level gauge, and the stability of the separation system is improved to a certain extent.

[0096] Optionally, the liquid level gauge device 5 includes but is not limited to a float ball liquid level gauge, a magnetic flip plate liquid level gauge, a radar liquid level gauge, an ultrasonic liquid level gauge, a magnetostrictive liquid level gauge, and the like.

[0097] In summary, by arranging the detour separation flow channel 90 in the separation chamber 9, the gas-liquid mixture entering from the gas-liquid mixture inlet 2 is in full contact with the distribution plate 63, most of the liquid is settled on the surface, and the separated fluid enters the separation flow channel 90 along the two sides of the distribution plate 63 in the length direction. At this time, under the blocking and deflection of the first baffle 61 and the second baffle 62, the liquid droplets further collide and settle on the baffle 60, the liquid enters the liquid phase area 102 and finally collects at the liquid outlet 4 at the center position of the bottom of the separation chamber 9, and the gas enters the demisting assembly 7.

[0098] Moreover, by the blocking of the distribution plate 63 and the baffle 60, the fluctuation of the liquid level can be reduced, which is conducive to improving the accuracy of the detection of the liquid level detection device, thereby improving the stability of the entire hydrogen production system.

[0099] After multiple deflection separations, the micron-sized liquid droplets are further separated when collecting into the demisting assembly 7, the separation effect is multiplied compared to the same size separator, the content of the liquid droplets in the gas at the gas outlet 3 is reduced, and the separation efficiency is improved.

[0100] Finally, under the same equipment size, by multiple turns in the separation flow channel 90, the residence time of the gas-liquid mixture in the separation chamber 9 is significantly increased, and the gas content of the liquid outlet 4 can be reduced by 70%. Under the same separation efficiency, the length of the separator can be reduced, and the cost and land area of the entire separator can be reduced by 30%.

[0101] The hydrogen production system provided by the embodiment of the present application comprises the gas-liquid separator 100 of any one of the above embodiments.

[0102] The hydrogen production system described above separates the gas-liquid mixture in the separation flow channel 90, so that the residence time of the gas-liquid mixture in the separation chamber 9 is longer, thereby facilitating effective separation of the gas and the liquid and improving the gas-liquid separation effect.

[0103] Specifically, the hydrogen production system includes but is not limited to a water supply system, a cooling system, a nitrogen system, a purification system, etc.

[0104] It should be noted that the above explanations and descriptions of the embodiments and advantages of the gas-liquid separator 100 are also applicable to the hydrogen production system of the present application, and to avoid redundancy, they will not be described in detail here.

[0105] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0106] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A gas-liquid separator characterized by, The gas-liquid separator comprises a cylinder and a separation assembly, the cylinder is provided with a separation cavity, a gas-liquid mixture inlet, a gas outlet and a liquid outlet, the separation cavity is communicated with the gas-liquid mixture inlet, the gas outlet and the liquid outlet; The gas-liquid mixture inlet and the gas outlet are arranged at the top of the cylinder, and the liquid outlet is arranged at the bottom of the cylinder; The separation assembly is arranged in the separation cavity, and a separation flow channel is arranged in the separation assembly, the separation flow channel is communicated with the gas-liquid mixture inlet and the liquid outlet, and communicated with the gas outlet and the liquid outlet.

2. The gas-liquid separator of claim 1, wherein, The separation assembly comprises a distribution plate and a baffle, the distribution plate is arranged along the length direction of the cylinder, the baffle is arranged on the distribution plate and faces the liquid outlet, and the separation flow channel is formed between the distribution plate and the baffle.

3. The gas-liquid separator of claim 2, wherein, The length of the distribution plate is 75% of the length of the cylinder.

4. The gas-liquid separator of claim 2, wherein, The baffle comprises a plurality of first baffles, the plurality of first baffles are arranged on the distribution plate along the length direction of the distribution plate, and the first baffles and the inner wall of the cylinder have a spacing in the direction perpendicular to the top to the bottom of the cylinder.

5. The gas-liquid separator of claim 4, wherein, The maximum distance between the first baffles and the inner wall of the cylinder is 30% of the diameter of the cylinder.

6. The gas-liquid separator of claim 4, wherein, The baffle comprises a plurality of second baffles, every two second baffles are arranged in the length direction of the cylinder, and the first baffles and the second baffles are arranged in sequence along the length direction of the distribution plate.

7. The gas-liquid separator of claim 6, wherein, The distance between two second baffles is 30% of the diameter of the cylinder.

8. The gas-liquid separator of claim 6, wherein, The liquid outlet is arranged at the middle position in the length direction of the cylinder.

9. The gas-liquid separator of claim 1, wherein, The gas-liquid separator further comprises a demisting assembly, the demisting assembly comprises a shell, a gas equalizing plate and a demisting screen, the shell forms a containing cavity and is provided with an opening in the length direction of the cylinder, the gas equalizing plate is arranged at the opening, the demisting screen is arranged on the side of the gas equalizing plate away from the opening, the shell is provided with a liquid outlet hole on the wall surface facing the liquid outlet, and the liquid outlet hole is arranged below the demisting screen.

10. The gas-liquid separator of claim 1, wherein, The gas-liquid separator further comprises a liquid level gauge device for detecting the liquid surface height in the cylinder.

11. A hydrogen production system, characterized by, The gas-liquid separator comprises the gas-liquid separator according to any one of claims 1-10.

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