Novel gas purification low-temperature adsorption cylinder

Abstract

The utility model discloses a novel low-temperature adsorption cylinder for gas purification, which relates to the field of gas purification and comprises a cylinder body, a liquid-phase feed inlet and a gas-phase feed inlet are arranged on the side surface of the cylinder body, a reflux inlet is arranged at the top of the cylinder body, a liquid outlet is arranged at the bottom of the cylinder body, and a plurality of groups of gas-liquid exchange components are mounted at the top of a tower plate. And the plurality of groups of gas-liquid exchange assemblies are uniformly distributed and can be used for mixing a gas phase and a liquid phase. By arranging the gas-liquid exchange assembly, when the quantity of a gas phase and the quantity of a liquid phase are small, the gas phase and the liquid phase can be fully mixed only through the second gas phase hole, when the quantity of the gas phase and the quantity of the liquid phase are increased, the pressure of the gas phase is increased to jack up the first ball valve, so that the first gas phase hole is opened, and exchange channels between the gas phase and the liquid phase are increased; it is ensured that the mass transfer and heat transfer efficiency of the gas phase and the liquid phase is still kept high when the gas phase and liquid phase treatment capacity is increased.

Description

Technical Field

[0001] The utility model relates to the field of gas purification, in particular to a novel low-temperature adsorption cylinder for gas purification. Background Art

[0002] Air separation equipment is a gas purification equipment used to gradually separate and produce inert gases such as oxygen, nitrogen and argon from liquid air. Air is used as raw material, and the air is turned into liquid through compression cycle deep freezing. Then, it is gradually separated and produced from liquid air through distillation to produce inert gases such as oxygen, nitrogen and argon.

[0003] Air separation equipment is divided into two parts: unit and distillation. The unit includes steam turbine, air compressor, supercharger, speed increasing gearbox, lubricating oil station, air extraction system, steam temperature and pressure reduction station. Distillation includes air precooling system, air purification system, air distillation tower, etc. The distillation of air is to use the different volatilities of various components of air, that is, the different vapor pressures of various components at the same temperature to partially evaporate and partially condense the liquid air multiple times, so as to achieve the purpose of separating the components.

[0004] The distillation tower is mainly used to separate different components in a mixture, which is achieved by using the boiling point difference of different components. The plate tower is a stage contact equipment. Through the multi-layer plate structure set at different heights, gas-liquid contact, mass transfer and heat transfer are carried out on the surface of the tower plate. Its main structure is composed of a cylinder, a tower plate, an inlet and outlet pipe and a supporting structure. Among them, the tower plate is the most core component. The liquid phase flows into the liquid receiving tank of the lower tower plate through the downcomer. The height of the liquid phase on the lower tower plate increases to form a liquid seal. The gas is sent down from the tower plate and passes through the tower plate. The gas phase and the liquid phase need to maintain a relative balance to fully mix the gas phase and the liquid phase. When the gas phase pressure is less than the liquid phase pressure, the liquid phase will leak through the tower plate. When the gas phase pressure is greater than the liquid phase, it will prevent the liquid phase from falling normally to form a liquid flooding phenomenon. Both leakage and liquid flooding will reduce the mass transfer and heat transfer efficiency of the tower plate. The relative balance of gas and liquid needs to be strictly controlled to ensure the working efficiency of the tower plate. However, in actual applications, gas and liquid are prone to imbalance, which reduces the working efficiency of the tower plate and affects the progress of gas purification. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a new type of gas purification low-temperature adsorption cylinder to solve the technical problems mentioned in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of gas purification low-temperature adsorption cylinder, including a cylinder, a plurality of groups of tower plates are installed inside the cylinder, and an overflow weir is arranged on the top of the tower plates, and a downcomer is arranged between the tower plates and the inner wall of the cylinder, a liquid phase feed port and a gas phase feed port are arranged on the side of the cylinder, and a reflux port is arranged on the top of the cylinder, and a liquid outlet is arranged at the bottom of the cylinder, a plurality of groups of gas-liquid exchange components are installed on the top of the tower plates, and the plurality of groups of gas-liquid exchange components are evenly distributed, and the gas-liquid exchange components can mix the gas phase and the liquid phase.

[0007] By adopting the above technical solution and setting up a gas-liquid exchange component, when the amount of gas phase and liquid phase is small, the gas phase and liquid phase can be fully mixed only through the second gas phase hole. When the amount of gas phase and liquid phase increases, the increase in gas phase pressure will lift the first ball valve, thereby opening the first gas phase hole, thereby increasing the exchange channel between the gas phase and the liquid phase, ensuring that when the gas phase and liquid phase processing capacity is increased, the mass transfer and heat transfer efficiency of the gas phase and the liquid phase remains high.

[0008] The utility model is further configured such that the gas-liquid exchange component includes a gas phase plate, and a plurality of groups of second gas phase holes are opened on the top of the gas phase plate, a plurality of groups of circular grooves matching the gas phase plate are opened on the top of the tower plate, and the tower plate and the gas phase plate are threadedly connected.

[0009] By adopting the above technical solution and setting a threaded connection between the gas phase plate and the tower plate, the gas-liquid exchange component can be movably installed on the top of the tower plate, which is convenient for the later maintenance and replacement of the gas-liquid exchange component. The second gas phase hole is set to allow the gas phase and the liquid phase to carry out mixed mass transfer and heat transfer.

[0010] The utility model is further configured such that a first gas phase tube is provided through the interior of the gas phase plate, and a plurality of first gas phase holes are provided on the side of the first gas phase tube, and an air inlet hole is provided at the bottom of the first gas phase tube, a first spring is provided inside the first gas phase tube, and a first ball valve is provided on the top of the first spring.

[0011] By adopting the above technical solution and setting up the first gas phase pipe, when the gas phase pressure increases, a part of the gas phase can be discharged through the first gas phase hole of the first gas phase pipe and mixed with the liquid phase, which is equivalent to adding a group of pipes connecting the gas phase and the liquid phase.

[0012] The utility model is further configured such that an inner convex ring matching the first ball valve is arranged inside the first gas phase pipe, and the first ball valve can seal the inner wall of the first gas phase pipe.

[0013] By adopting the above technical solution, the inner wall of the first gas phase pipe can be blocked by providing the first ball valve.

[0014] The utility model is further configured that a liquid phase circulation device is arranged between the reflux port and the liquid outlet.

[0015] By adopting the above technical solution and setting up a liquid phase circulation device, the liquid phase can be circulated multiple times in the cylinder, so that the components in the liquid phase can be fully precipitated by utilizing the boiling point difference.

[0016] The utility model is further configured such that a second gas phase tube is arranged on the top of the first gas phase tube, and a plurality of third gas phase holes are opened on the side of the second gas phase tube, a second spring is arranged inside the second gas phase tube, and a second ball valve is arranged on the top of the second spring.

[0017] By adopting the above technical solution, by setting the second ball valve and the third gas phase hole inclined downward, an additional insurance can be added for the liquid flooding phenomenon of the tower plate. The gas phase is discharged through the inclined third gas phase hole, acts on the upper surface of the liquid phase, and while transferring mass and heat with the liquid phase, the liquid phase can be suppressed to reduce the effect of the liquid flooding phenomenon.

[0018] The utility model is further configured such that an inner convex ring matching the second ball valve is arranged inside the second gas phase pipe, and the second ball valve can seal the inner wall of the second gas phase pipe.

[0019] By adopting the above technical solution, the inner wall of the second gas phase pipe can be blocked by providing a second ball valve.

[0020] The utility model is further configured such that a plurality of groups of the third gas phase holes are evenly distributed, and the third gas phase holes are arranged obliquely downward.

[0021] By adopting the above technical solution, by setting a plurality of groups of inclined third gas phase holes, the discharged gas phase can suppress the liquid phase, thereby reducing the liquid flooding phenomenon while transferring mass and heat.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] 1. The utility model sets a gas-liquid exchange component. When the amount of gas phase and liquid phase is small, the gas phase and liquid phase can be fully mixed only through the second gas phase hole. When the amount of gas phase and liquid phase increases, the gas phase pressure increases and the first ball valve is lifted, thereby opening the first gas phase hole, so that the exchange channel between the gas phase and the liquid phase is increased, ensuring that when the gas phase and liquid phase processing amount is increased, the mass transfer and heat transfer efficiency of the gas phase and the liquid phase remains high.

[0024] 2. The utility model can add an insurance against liquid flooding of the tower plate by arranging a second ball valve and a third gas phase hole inclined downward in the gas-liquid exchange component. When the gas phase pressure suddenly increases, the second ball valve will be lifted up, and the gas phase will be discharged through the inclined third gas phase hole, acting on the upper surface of the liquid phase, and while transferring mass and heat with the liquid phase, the liquid phase can be suppressed, thereby reducing the effect of liquid flooding during the period when the gas phase pressure returns to normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the cylinder structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the cylinder of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the gas-liquid exchange component of the utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of the gas-liquid exchange component of the utility model.

[0029] In the figure: 1. cylinder; 2. tower plate; 3. overflow weir; 4. downcomer; 5. liquid phase feed port; 6. gas phase feed port; 7. reflux port; 8. liquid outlet; 9. gas-liquid exchange component; 10. first gas phase pipe; 11. first gas phase hole; 12. air inlet; 13. first spring; 14. first ball valve; 15. gas phase plate; 16. second gas phase hole; 17. second gas phase pipe; 18. second spring; 19. second ball valve; 20. third gas phase hole. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0031] The following describes an embodiment of the utility model based on its overall structure.

[0032] Embodiment 1

[0033] A new type of gas purification low temperature adsorption cylinder, such as Figure 1-4As shown, it includes a cylinder 1, multiple groups of tower plates 2 are installed inside the cylinder 1, and an overflow weir 3 is arranged on the top of the tower plate 2. By setting the overflow weir 3, the liquid phase can be accumulated and the shaking of the liquid phase can be reduced. A downcomer 4 is arranged between the tower plate 2 and the inner wall of the cylinder 1. The downcomer 4 can allow the liquid phase to flow to the tower plate 2 of the lower layer. A liquid phase feed port 5 and a gas phase feed port 6 are arranged on the side of the cylinder 1, and a reflux port 7 is arranged on the top of the cylinder 1, and a liquid outlet 8 is arranged at the bottom of the cylinder 1. Multiple groups of gas-liquid exchange components 9 are installed on the top of the tower plate 2, and the multiple groups of gas-liquid exchange components 9 are evenly distributed. The gas-liquid exchange components 9 can mix the gas phase and the liquid phase. The gas-liquid exchange components 9 can be arranged to mix the gas phase and the liquid phase to achieve the purpose of mass transfer and heat transfer.

[0034] See also Figure 3 The gas-liquid exchange component 9 includes a gas phase plate 15, and a plurality of second gas phase holes 16 are provided on the top of the gas phase plate 15. A plurality of circular grooves matching the gas phase plate 15 are provided on the top of the tower plate 2, and the tower plate 2 and the gas phase plate 15 are threadedly connected. By setting the gas phase plate 15 and the tower plate 2 to be threadedly connected, the gas-liquid exchange component 9 can be movably installed on the top of the tower plate 2, which is beneficial to the later maintenance and replacement of the gas-liquid exchange component 9. The second gas phase holes 16 are provided to allow the gas phase and the liquid phase to perform mixed mass transfer and heat transfer.

[0035] See also Figure 4 A first gas phase pipe 10 is provided inside the gas phase plate 15, and a plurality of first gas phase holes 11 are provided on the side of the first gas phase pipe 10, and an air inlet hole 12 is provided at the bottom of the first gas phase pipe 10, a first spring 13 is provided inside the first gas phase pipe 10, and a first ball valve 14 is provided on the top of the first spring 13. By providing the first gas phase pipe 10, when the gas phase pressure increases, a part of the gas phase can be discharged through the first gas phase hole 11 of the first gas phase pipe 10 and mixed with the liquid phase, which is equivalent to adding a group of pipes connecting the gas phase and the liquid phase.

[0036] See also Figure 4 An inner convex ring matching the first ball valve 14 is arranged inside the first gas phase pipe 10 , and the first ball valve 14 can seal the inner wall of the first gas phase pipe 10 . By setting the first ball valve 14 , the inner wall of the first gas phase pipe 10 can be sealed.

[0037] See also Figure 1 A liquid phase circulation device is provided between the reflux port 7 and the liquid outlet 8. By providing the liquid phase circulation device, the liquid phase can be circulated multiple times in the cylinder 1, so that the components in the liquid phase can be fully precipitated out by utilizing the boiling point difference.

[0038] Embodiment 2

[0039] A new type of gas purification low temperature adsorption cylinder, such as Figure 1-4As shown, a second gas phase pipe 17 is provided on the top of the first gas phase pipe 10, and a plurality of third gas phase holes 20 are provided on the side of the second gas phase pipe 17. A second spring 18 is provided inside the second gas phase pipe 17, and a second ball valve 19 is provided on the top of the second spring 18. By providing the second ball valve 19 and the downwardly inclined third gas phase hole 20, an insurance can be added for the liquid flooding phenomenon of the tower plate 2. The gas phase is discharged through the inclined third gas phase hole 20 and acts on the upper surface of the liquid phase. While performing mass and heat transfer with the liquid phase, the liquid phase can be suppressed to reduce the effect of the liquid flooding phenomenon.

[0040] See also Figure 4 An inner convex ring matching the second ball valve 19 is arranged inside the second gas phase pipe 17, and the second ball valve 19 can seal the inner wall of the second gas phase pipe 17. By setting the second ball valve 19, the inner wall of the second gas phase pipe 17 can be sealed.

[0041] See also Figure 4 A plurality of groups of third gas phase holes 20 are evenly distributed, and the third gas phase holes 20 are arranged to be tilted downward. By arranging a plurality of groups of tilted third gas phase holes 20, the discharged gas phase can suppress the liquid phase, thereby reducing the liquid flooding phenomenon while transferring mass and heat.

[0042] The working principle of the utility model is as follows: the liquid phase enters the interior of the cylinder 1 through the liquid phase feed port 5, the gas phase enters the interior of the cylinder 1 through the gas phase feed port 6, the liquid phase flows to the surface of the tower plate 2 for accumulation, and then passes over the overflow weir 3 through the downcomer 4 to reach the surface of the tower plate 2 of the lower layer, and at the same time, the gas phase passes through the second gas phase hole 16 of the gas phase plate 15 to fully mix with the liquid phase on the upper surface of the tower plate 2 for mass transfer and heat transfer.

[0043] When the amount of liquid phase increases, the amount of gas phase will also increase accordingly. The increased gas phase will enter the air inlet 12, then push up the first ball valve 14, the first spring 13 will stretch, a part of the gas phase will enter the first gas phase pipe 10, and then be discharged from the first gas phase hole 11 to be fully mixed with the liquid phase. The second gas phase hole 16 is in a vertical direction, and the first gas phase hole 11 is in a horizontal direction. The gas phase and liquid phase can be fully mixed at multiple angles to improve the mass transfer and heat transfer efficiency of the gas phase and liquid phase.

[0044] When the gas phase grows explosively and the amount of the liquid phase changes slowly, liquid overflow will occur. Therefore, the gas phase will push the second ball valve 19, the second spring 18 will stretch, a part of the gas phase will enter the second gas phase tube 17, and then be discharged from the third gas phase hole 20, contacting the upper surface of the liquid phase, suppressing the liquid phase and reducing the liquid overflow. After the gas phase stabilizes, the second spring 18 will drive the second ball valve 19 to re-close the second gas phase tube 17.

[0045] After the gas phase and the liquid phase are exchanged, the liquid phase will flow to the bottom of the cylinder 1, and then flow out from the liquid outlet 8. After passing through the circulation device, the liquid phase will flow back into the reflux port 7. After multiple gas-liquid exchanges, the gases of different components can be separated and collected at different temperatures.

[0046] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A novel gas purification low-temperature adsorption cylinder, comprising a cylinder body (1), characterized in that: The cylinder (1) is provided with a plurality of tower plates (2) inside, and an overflow weir (3) is provided at the top of the tower plates (2), and a downcomer (4) is provided between the tower plates (2) and the inner wall of the cylinder (1), a liquid phase feed port (5) and a gas phase feed port (6) are provided on the side of the cylinder (1), and a reflux port (7) is provided at the top of the cylinder (1), and a liquid outlet (8) is provided at the bottom of the cylinder (1), a plurality of gas-liquid exchange components (9) are provided at the top of the tower plates (2), and the plurality of gas-liquid exchange components (9) are evenly distributed, the gas-liquid exchange components (9) are capable of mixing gas phase and liquid phase, and the gas-liquid exchange components (9) include A gas phase plate (15) is provided, and a plurality of groups of second gas phase holes (16) are provided on the top of the tower plate (2), a plurality of groups of circular grooves matching the gas phase plate (15) are provided on the top of the tower plate (2), and the tower plate (2) and the gas phase plate (15) are threadedly connected, a first gas phase pipe (10) is provided inside the gas phase plate (15), a plurality of groups of first gas phase holes (11) are provided on the side of the first gas phase pipe (10), and an air inlet hole (12) is provided at the bottom of the first gas phase pipe (10), a first spring (13) is provided inside the first gas phase pipe (10), and a first ball valve (14) is provided on the top of the first spring (13).

2. A novel gas purification low-temperature adsorption cylinder according to claim 1, characterized in that: An inner convex ring matching the first ball valve (14) is arranged inside the first gas phase pipe (10), and the first ball valve (14) can seal the inner wall of the first gas phase pipe (10).

3. A novel gas purification low-temperature adsorption cylinder according to claim 2, characterized in that: A liquid phase circulation device is provided between the reflux port (7) and the liquid outlet (8).

4. A novel gas purification low-temperature adsorption cylinder according to claim 3, characterized in that: A second gas phase pipe (17) is arranged on the top of the first gas phase pipe (10), and a plurality of groups of third gas phase holes (20) are opened on the side of the second gas phase pipe (17); a second spring (18) is arranged inside the second gas phase pipe (17), and a second ball valve (19) is arranged on the top of the second spring (18).

5. A novel gas purification low-temperature adsorption cylinder according to claim 4, characterized in that: An inner convex ring matching the second ball valve (19) is arranged inside the second gas phase pipe (17), and the second ball valve (19) can seal the inner wall of the second gas phase pipe (17).

6. A novel gas purification low-temperature adsorption cylinder according to claim 5, characterized in that: The plurality of groups of third gas phase holes (20) are evenly distributed, and the third gas phase holes (20) are arranged obliquely downward.

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