Helium recovery and purification treatment equipment

Abstract

According to the helium recovery and purification treatment equipment, recovered helium is fed into adsorption cavities in the bottom of a purification tank through a gas inlet pipe, and the helium is guided to penetrate through partition plate communicating holes to enter all the adsorption cavities by means of suction force of a suction pump above the helium recovery and purification treatment equipment. A driving motor in the equipment drives a rotating shaft to rotate to drive an adsorption plate to rotate, so that an activated carbon desiccant loaded in a hollow cavity of the adsorption plate is in full contact with recycled helium through small circulating holes I, and water molecules and impurities in the recycled helium are effectively adsorbed. And after primary adsorption is completed, helium in the adsorption cavity at the highest position enters an air suction pipe through an air outlet pipe and then is fed into a secondary adsorption box transition cavity in the recovery tank body through an air suction pump and a discharge pipe of the air suction pump. In the transition cavity, the helium flows into the purification cavity through the small circulating holes II and is further purified by the activated carbon dehumidizer in the secondary adsorption box, so that impurities and water molecules in the helium are thoroughly removed. According to the design, the recycling rate and the purification efficiency of helium are remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of helium recovery, in particular to a helium recovery and purification treatment equipment. BACKGROUND

[0002] As a kind of rare gas, helium has unique physical and chemical properties and plays an irreplaceable role in many industrial fields. For example, helium is widely used in pressurized rocket fuel, inert gas environment creation in the welding process, heat treatment and epitaxial crystal growth, semiconductor cleaning, and calibration analysis instruments. In addition, helium can also be used to fill aircraft tires and safety airbags, air tightness testing, meteorological balloon filling, and filling gas for neon lamp tubes.

[0003] Although the application range of helium is very wide, its resources are extremely limited. Helium is a non-renewable rare gas, and the helium reserves on earth are extremely scarce. With the continuous development of modern industry, the demand for helium is showing a rapid growth trend, leading to a rising price. Therefore, it is particularly important to improve the recovery rate of helium and increase the purity of recovered helium.

[0004] During the helium recovery process, due to the complexity of gas mixing, the recovered helium often contains water molecules and other impurity gases. These impurities not only reduce the purity of recovered helium, but also may have adverse effects on subsequent industrial applications. Therefore, in order to efficiently recover helium and further purify it, it is urgent to develop a helium recovery and purification treatment equipment to solve the problems of incomplete removal of impurities and low purification efficiency in the prior art, thereby improving the recovery utilization rate and economic benefits of helium. CONTENT OF THE INVENTION

[0005] In view of the deficiencies in the prior art, the present application aims to provide a helium recovery and purification treatment equipment to solve the problems raised in the background art.

[0006] According to one aspect of this application, a helium recovery and purification device includes a purification tank. A purification cover plate is fixedly installed on the top of the purification tank. An inlet pipe is fixedly connected to one side of the bottom of the purification tank, and an outlet pipe is fixedly connected to the other side of the top of the purification tank. Multiple partition plates are fixedly arranged equidistantly along the axial direction inside the purification tank. Each partition plate is horizontally arranged, dividing the inner cavity of the purification tank into several adsorption chambers. Each partition plate has a through-hole, and two adjacent adsorption chambers are connected through the through-hole. A drive motor is fixedly installed on the top of the purification cover plate. The output shaft of the drive motor is fixedly connected to a rotating shaft, and the rotating shaft is rotatably installed inside the purification tank. The axis of the rotating shaft is parallel to the... The axes of the purification tanks coincide, and the rotating shafts pass through each of the partition plates. Multiple adsorption plates are evenly and equidistantly fixed on the outer wall of the rotating shafts located in each adsorption chamber. The inlet pipe is connected to the adsorption chamber at the lowest point in the purification tank, and the outlet pipe is connected to the adsorption chamber at the highest point in the purification tank. The outer end of the outlet pipe is connected to one end of the extraction pipe, and the other end of the extraction pipe is connected to the extraction pump. The extraction pump is fixedly installed on the recovery cover plate, and the recovery cover plate is fixedly installed on the top of the recovery tank. A secondary adsorption box is fixedly provided on the lower surface of the recovery cover plate. The secondary adsorption box is located inside the recovery tank. The discharge pipe of the extraction pump is connected to the secondary adsorption box, and an extraction pipe is fixedly connected to one side of the bottom of the recovery tank.

[0007] Preferably, each of the adsorption plates has a hollow cavity structure inside, and the surface of the adsorption plate is provided with a plurality of small flow holes at equal intervals. The hollow cavity of the adsorption plate is connected to the adsorption cavity through the small flow holes, and the hollow cavity of each adsorption plate is filled with activated carbon desiccant.

[0008] Preferably, the upper and lower end faces of each adsorption plate are in sliding contact with the upper and lower surfaces of their corresponding adsorption chambers.

[0009] Preferably, the secondary adsorption box is composed of an inner cylindrical side plate, an outer cylindrical side plate and a closed bottom plate, the bottom of the inner cylindrical side plate is fixedly arranged at the middle of the upper surface of the closed bottom plate, the bottom of the outer cylindrical side plate is fixedly arranged at the edge of the upper surface of the closed bottom plate, and the outer cylindrical side plate is located at the outer circumferential side of the inner cylindrical side plate, the top of the inner cylindrical side plate and the outer cylindrical side plate is fixedly connected with the lower surface of the recovery cover plate, a plurality of flow-through small holes two are uniformly and equidistantly arranged on the circumferential side wall of the inner cylindrical side plate and the outer cylindrical side plate, the inner side wall of the inner cylindrical side plate, the lower surface of the recovery cover plate and the upper surface of the closed bottom plate surround a transition cavity, and the outer side wall of the inner cylindrical side wall, the inner side wall of the outer cylindrical side plate, the lower surface of the recovery cover plate and the upper surface of the closed bottom plate surround a purification cavity, the discharge pipe of the air suction pump is arranged inside the transition cavity, and the purification cavity is filled with activated carbon dehumidifier.

[0010] Preferably, the communication port of the air inlet pipe is arranged in the opposite direction of the position of the communication hole on the lowest partition plate, the communication port of the air outlet pipe is arranged in the opposite direction of the position of the communication hole on the highest partition plate, and the communication holes on the adjacent two partition plates are arranged in the opposite direction.

[0011] Preferably, the electromagnetic valves are fixedly installed on the air inlet pipe, the air suction pipe and the air discharge pipe.

[0012] Compared with the prior art, the helium recovery and purification treatment equipment has the following advantages: the recovered helium is transported into the adsorption cavities at the lowest position in the purification tank body through the air inlet pipe, the helium in the purification tank body enters the adsorption cavities in the purification tank body through the communication holes in the partition plates under the action of the suction force of the air suction pump above the recovery tank body, the driving motor drives the rotating shaft to rotate, thereby driving the adsorption plates in the adsorption cavities to rotate, the activated carbon dehumidifier in the hollow cavities of the adsorption plates contacts the recovered helium in the adsorption cavities through the flow-through small holes one, thereby effectively adsorbing the water molecules and other impurities in the helium, the recovered helium in the adsorption cavities at the highest position enters the air suction pipe after adsorption through the air outlet pipe, then enters the transition cavity of the secondary adsorption box in the recovery tank body through the air suction pump and the discharge pipe, then the helium in the transition cavity flows through the purification cavity of the secondary adsorption box through the flow-through small holes two, thereby enabling the activated carbon dehumidifier in the purification cavity to perform secondary adsorption on the helium, so that the activated carbon dehumidifier more fully adsorbs the water molecules and other impurities in the helium, thereby completely removing the impurities and water molecules in the helium and improving the recovery rate and purification efficiency of the helium. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a perspective view of a helium recovery and purification treatment equipment according to an embodiment of the present application.

[0014] Fig. 2 is a perspective sectional view of a purification tank of a helium recovery and purification treatment device according to an embodiment of the present application.

[0015] Fig. 3 is a perspective sectional view of a purification tank and a recovery tank of a helium recovery and purification treatment device according to an embodiment of the present application.

[0016] Fig. 4 is a main sectional structure view of a helium recovery and purification treatment device according to an embodiment of the present application.

[0017] Reference signs: 1, purification tank; 2, purification cover plate; 3, gas inlet pipe; 4, gas outlet pipe; 5, partition plate; 6, adsorption cavity; 7, communication hole; 8, driving motor; 9, rotating shaft; 10, adsorption plate; 11, gas extraction pipe; 12, gas extraction pump; 13, recovery cover plate; 14, recovery tank; 15, secondary adsorption box; 151, inner cylindrical side plate; 152, outer cylindrical side plate; 153, closed bottom plate; 154, flow-through small hole II; 16, extraction pipe; 17, flow-through small hole I. DETAILED DESCRIPTION

[0018] In order to make the content of the present application more easily understood, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component. In addition, the terms "first", "second", etc. are only used for description purposes and should not be understood as indicating or implying relative importance.

[0019] As Figs. 1-4As shown, a helium recovery and purification treatment equipment, including a purification tank body 1, the purification tank body 1 top fixedly installed with purification cover plate 2, purification tank body 1 bottom side fixedly connected with the gas inlet pipe 3, the gas inlet pipe 3 fixedly installed with solenoid valve, purification tank body 1 top another side fixedly connected with the gas outlet pipe 4, the inside of purification tank body 1 along its axial equidistantly fixed with multiple partition plates 5, each partition plate 5 is horizontally arranged, the partition plate 5 divides the inner cavity of purification tank body 1 into several adsorption cavities 6, each partition plate 5 is all through the communication hole 7, the adjacent two adsorption cavities 6 are all connected through the communication hole 7, purification cover plate 2 top fixedly installed with drive motor 8, the output shaft of drive motor 8 is fixedly connected with the rotating shaft 9, and the rotating shaft 9 is rotatably installed in the purification tank body 1, and the axis of the rotating shaft 9 coincides with the axis of the purification tank body 1, and the rotating shaft 9 penetrates each partition plate 5, and the outer side wall of the rotating shaft 9 in each adsorption cavity 6 is uniformly equidistantly fixed with multiple adsorption plates 10, the inside of each adsorption plate 10 is hollow cavity structure, and the surface of the adsorption plate 10 is uniformly equidistantly provided with multiple through holes 17, the hollow cavity of the adsorption plate 10 is connected with the adsorption cavity 6 through the through hole 17, the hollow cavity of each adsorption plate 10 is filled with activated carbon dehumidifier, the upper and lower end surfaces of each adsorption plate 10 are in sliding contact with the upper and lower surfaces of the corresponding adsorption cavity 6 respectively, which can make the adsorption plate 10 fully contact with the helium in the corresponding adsorption cavity 6, improve the adsorption efficiency; the gas inlet pipe 3 is connected with the lowest adsorption cavity 6 in the purification tank body 1, the gas outlet pipe 4 is connected with the highest adsorption cavity 6 in the purification tank body 1, the communication port of the gas inlet pipe 3 and the position of the communication hole 7 on the lowest partition plate 5 are oppositely arranged, the communication port of the gas outlet pipe 4 and the position of the communication hole 7 on the highest partition plate 5 are oppositely arranged, the communication holes 7 on the adjacent two partition plates 5 are oppositely arranged, which can make the recovered helium more fully diffuse in the adsorption cavity 6.The outer end of the gas outlet pipe 4 is connected with one end of the air extraction pipe 11, and an electromagnetic valve is fixedly installed on the air extraction pipe 11. The other end of the air extraction pipe 11 is connected with the air extraction pump 12, and the air extraction pump 12 is fixedly installed on the recovery cover plate 13. The recovery cover plate 13 is fixedly installed on the top of the recovery tank body 14. A secondary adsorption box 15 is fixedly arranged on the lower surface of the recovery cover plate 13 and arranged in the recovery tank body 14. The exhaust pipe of the air extraction pump 12 is communicated with the secondary adsorption box 15. The secondary adsorption box 15 is composed of an inner cylindrical side plate 151, an outer cylindrical side plate 152 and a closed bottom plate 153. The bottom of the inner cylindrical side plate 151 is fixedly arranged on the middle of the upper surface of the closed bottom plate 153. The bottom of the outer cylindrical side plate 152 is fixedly arranged on the edge of the upper surface of the closed bottom plate 153, and the outer cylindrical side plate 152 is located on the outer circumferential side of the inner cylindrical side plate 151. The top of the inner cylindrical side plate 151 and the outer cylindrical side plate 152 is fixedly connected with the lower surface of the recovery cover plate 13. A plurality of flow-through small holes 154 are uniformly and equidistantly arranged on the circumferential wall of the inner cylindrical side plate 151 and the outer cylindrical side plate 152. The inner side wall of the inner cylindrical side plate 151, the lower surface of the recovery cover plate 13 and the upper surface of the closed bottom plate 153 form a transition cavity. The inner side wall of the inner cylindrical side plate 151, the inner side wall of the outer cylindrical side plate 152, the lower surface of the recovery cover plate 13 and the upper surface of the closed bottom plate 153 form a purification cavity. The exhaust pipe of the air extraction pump 12 extends into the transition cavity. The purification cavity is filled with activated carbon dehumidifier. The recovered helium enters the transition cavity of the secondary adsorption box 15 in the recovery tank body 14 through the air extraction pump 12 and its exhaust pipe, and then the helium in the transition cavity flows through the purification cavity of the secondary adsorption box 15 through the flow-through small holes 154, so that the activated carbon dehumidifier in the purification cavity performs secondary adsorption on the helium.

[0020] Working principle: in use, the recovered helium is delivered to the lowest adsorption cavity 6 in the purification tank body 1 through the gas inlet pipe 3, the helium in the purification tank body 1 is drawn into each adsorption cavity 6 of the purification tank body 1 through the communication hole 7 on the partition plate 5 by the suction effect of the gas suction pump 12 above the recovery tank body 14, at the same time, the driving motor 8 drives the rotating shaft 9 to rotate, thereby driving the adsorption plate 10 in each adsorption cavity 6 to rotate, thereby making the activated carbon desiccant in the hollow cavity of the adsorption plate 10 contact with the recovered helium in the adsorption cavity 6 through the flow-through small hole 17, thereby effectively adsorbing the water molecules and other impurities contained in the helium, then the recovered helium in the highest adsorption cavity 6 is delivered into the gas suction pipe 11 through the gas outlet pipe 4 after adsorption, then through the gas suction pump 12 and its discharge pipe into the transition cavity of the secondary adsorption box 15 in the recovery tank body 14, then the helium in the transition cavity flows through the purification cavity of the secondary adsorption box 15 through the flow-through small hole 2 154, thereby making the activated carbon desiccant in the purification cavity adsorb the helium for the second time, so that it more fully adsorbs the water molecules and other impurities contained in the helium, thereby completely removing the impurities and water molecules in the helium, improving the recovery rate and purification efficiency of the helium.

[0021] The above examples are only used to illustrate the technical solutions of the embodiments of the present application, but not to limit them. Although the embodiments of the present application have been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can modify the technical solutions recorded in the foregoing examples, or make equivalent replacement to part of the technical features, without departing from the spirit and scope defined by the claims of the present application.

Claims

1. A helium recovery purification processing plant characterized by, The purification tank includes a purification tank (1), a purification cover plate (2) fixedly installed on the top of the purification tank (1), an air inlet pipe (3) fixedly connected to one side of the bottom of the purification tank (1), an air outlet pipe (4) fixedly connected to the other side of the top of the purification tank (1), and multiple partition plates (5) fixedly and equidistantly arranged along its axial direction inside the purification tank (1). Each partition plate (5) is horizontally arranged, and the partition plates (5) divide the inner cavity of the purification tank (1) into several adsorption chambers. 6) Each of the partition plates (5) has a through-hole (7), and two adjacent adsorption chambers (6) are connected through the through-hole (7). A drive motor (8) is fixedly installed on the top of the purification cover plate (2). The output shaft of the drive motor (8) is fixedly connected to the rotating shaft (9), and the rotating shaft (9) is rotatably installed inside the purification tank (1). The axis of the rotating shaft (9) coincides with the axis of the purification tank (1), and the rotating shaft (9) passes through each The partition plate (5) has multiple adsorption plates (10) evenly and equidistantly fixed on the outer wall of the rotating shaft (9) in each adsorption chamber (6). The air inlet pipe (3) is connected to the lowest adsorption chamber (6) in the purification tank (1), and the air outlet pipe (4) is connected to the highest adsorption chamber (6) in the purification tank (1). The outer end of the air outlet pipe (4) is connected to one end of the suction pipe (11), and the other end of the suction pipe (11) is connected to the suction pump (1). 2) Connecting the air pump (12) is fixedly installed on the recycling cover plate (13), the recycling cover plate (13) is fixedly installed on the top of the recycling tank (14), a secondary adsorption box (15) is fixedly provided on the lower surface of the recycling cover plate (13), the secondary adsorption box (15) is set inside the recycling tank (14), the discharge pipe of the air pump (12) is connected to the secondary adsorption box (15), and an extraction pipe (16) is fixedly connected to one side of the bottom of the recycling tank (14).

2. A helium recovery and purification plant according to claim 1, characterized in that, Each of the adsorption plates (10) has a hollow cavity structure inside, and a plurality of small flow holes (17) are evenly and equidistantly opened on the surface of the adsorption plate (10). The hollow cavity of the adsorption plate (10) is connected to the adsorption cavity (6) through the small flow holes (17). The hollow cavity of each adsorption plate (10) is filled with activated carbon dehumidifier.

3. A helium recovery and purification plant according to claim 2, wherein, The upper and lower end faces of each of the adsorption plates (10) are in sliding contact with the upper and lower surfaces of their corresponding adsorption cavities (6).

4. The helium recovery and purification processing apparatus according to claim 1, wherein The secondary adsorption box (15) is composed of an inner cylindrical side plate (151), an outer cylindrical side plate (152) and a closed bottom plate (153), the bottom of the inner cylindrical side plate (151) is fixedly arranged on the middle of the upper surface of the closed bottom plate (153), the bottom of the outer cylindrical side plate (152) is fixedly arranged at the edge of the upper surface of the closed bottom plate (153), and the outer cylindrical side plate (152) is located on the outer circumferential side of the inner cylindrical side plate (151), the top of the inner cylindrical side plate (151) and the outer cylindrical side plate (152) is fixedly connected with the lower surface of the recovery cover plate (13), a plurality of flow-through small holes (154) are uniformly and equidistantly arranged on the circumferential wall of the inner cylindrical side plate (151) and the outer cylindrical side plate (152), the inner side wall of the inner cylindrical side plate (151), the lower surface of the recovery cover plate (13) and the upper surface of the closed bottom plate (153) surround a transition cavity, the outer side wall of the inner cylindrical side wall, the inner side wall of the outer cylindrical side plate (152), the lower surface of the recovery cover plate (13) and the upper surface of the closed bottom plate (153) surround a purification cavity, the exhaust pipe of the air suction pump (12) is arranged in the transition cavity, and the purification cavity is filled with activated carbon dehumidifier.

5. The helium recovery and purification processing apparatus according to claim 1, wherein The positions of the communication ports of the air inlet pipe (3) and the air outlet pipe (4) and the communication holes (7) on the lowest and highest of the partition plates (5) are arranged in opposite directions, and the positions of the communication holes (7) on the adjacent two partition plates (5) are arranged in opposite directions.

6. The helium recovery and purification processing apparatus according to claim 1, wherein The electromagnetic valves are fixedly installed on the air inlet pipe (3), the air suction pipe (11) and the air extraction pipe (16).

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