PSA nitrogen-making tail gas recovery device

Abstract

The utility model discloses a PSA (Pressure Swing Adsorption) nitrogen-making tail gas recovery device which comprises a recovery tank, a gas inlet mechanism and a spraying mechanism, the air inlet mechanism is installed on the recovery tank and comprises an air storage frame, a plurality of fixing blocks are fixed to the air storage frame, a rotating plate is rotationally connected to the air storage frame, an air conveying pipe is fixed to the rotating plate, a pair of air outlet holes are formed in the air conveying pipe, a buffer layer is fixed in the recovery tank, and a rotating rod is rotationally connected to the buffer layer. A plurality of filter screens are fixed on the gas storage frame, and the filter screens are rotationally connected with the rotating rod; the spraying mechanism is installed on the gas storage frame and comprises a rotating frame, a plurality of water storage sleeves are fixed to the rotating frame, and a plurality of nozzles are installed on the water storage sleeves. Compared with the prior art, the PSA nitrogen-making tail gas recovery device can effectively collect oxygen in tail gas, so that the utilization rate of resources is improved, the waste of the resources is reduced, the yield of the oxygen is increased, and the economic benefit is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tail gas recovery devices, and particularly relates to a PSA nitrogen production tail gas recovery device. Background Technique

[0002] The PSA nitrogen production technology is an efficient nitrogen preparation method, which is widely used in industrial production, environmental protection and other fields. With the increasingly strict environmental protection requirements, the treatment method of PSA nitrogen production tail gas has become the focus of the industry. The PSA nitrogen production technology, namely pressure swing adsorption nitrogen production technology, mainly realizes nitrogen-oxygen separation through the difference in the adsorption capacity of adsorbents for nitrogen and oxygen under pressure changes. In the pressure reduction and desorption stage, by reducing the system pressure, the adsorbed gas is released from the adsorption material, and nitrogen is recovered and further processed and applied.

[0003] In the prior art, during the PSA nitrogen production process, the adsorbent can adsorb nitrogen and oxygen separately. However, part of the oxygen is not easily adsorbed completely and is easily discharged together with the tail gas, which reduces the utilization rate of resources, causes resource waste, and is likely to reduce the oxygen production and economic benefits.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a PSA nitrogen production tail gas recovery device.

[0005] The information disclosed in this background art section is only intended to enhance the understanding of the overall background of the utility model, and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a PSA nitrogen production tail gas recovery device, which can be used to solve the problem that oxygen in the PSA nitrogen production tail gas is easily discharged directly.

[0007] To achieve the above purpose, a specific embodiment of the utility model provides a PSA nitrogen production tail gas recovery device, including: a recovery tank, an air inlet mechanism and a spraying mechanism;

[0008] The air inlet mechanism is installed on the recovery tank. The air inlet mechanism includes an air storage frame, on which a plurality of fixing blocks are fixed. A rotating plate is rotatably connected to the air storage frame, and an air delivery pipe is fixed on the rotating plate. A pair of air outlet holes are drilled on the air delivery pipe.

[0009] The spraying mechanism is installed on the air storage frame. The spraying mechanism includes a rotating frame, on which a plurality of water storage sleeves are fixed, and a plurality of spray heads are installed on the water storage sleeves.

[0010] In one or more embodiments of the present utility model, a buffer layer is fixedly arranged inside the recovery tank. The buffer layer can slow down the flow rate of the tail gas and the treatment liquid, enabling the remaining components in the tail gas to be fully mixed with the treatment liquid. A rotating rod is rotatably connected to the buffer layer. The rotating rod is used to support the connecting frame and multiple connecting rods, and can drive the connecting frame to rotate following the connecting rods.

[0011] In one or more embodiments of the present utility model, a plurality of filter meshes are fixedly arranged on the air storage frame. The filter meshes are rotatably connected to the rotating rod. The filter meshes are used to filter impurities in the tail gas.

[0012] In one or more embodiments of the present utility model, connecting rods are fixedly arranged between one end of the rotating rod and a plurality of air delivery pipes. The connecting rods are used to connect the rotating rod and the plurality of air delivery pipes. Stirring rods are fixedly arranged on the rotating rod. The stirring rods can stir the treatment liquid at the bottom of the recovery tank, dispersing the tail gas, facilitating the treatment liquid to fully adsorb impurities in the tail gas, and facilitating the treatment liquid to treat the remaining substances in the tail gas.

[0013] In one or more embodiments of the present utility model, a pair of support rings are fixedly arranged on the rotating plate. The support rings are rotatably connected to the air storage frame. The support rings are used to support the rotating plate, enabling the rotating plate to rotate on the air storage frame.

[0014] In one or more embodiments of the present utility model, an air inlet pipe is installed on the fixed block. Through the air inlet pipe, the tail gas can be conveyed into the interior of the air storage frame. An exhaust pipe is installed at the upper end of the recovery tank. Through the exhaust pipe, the treated oxygen can be discharged.

[0015] In one or more embodiments of the present utility model, a support frame is fixedly arranged on the rotating frame. The support frame is rotatably connected to the recovery tank. The support frame is used to support the rotating frame.

[0016] In one or more embodiments of the present utility model, one end of the rotating rod far from the air storage frame is fixed

[0017] with a connecting frame. The connecting frame is fixedly connected to a plurality of water storage sleeves. The connecting frame is used to connect the rotating rod and the plurality of water storage sleeves, and can drive the plurality of water storage sleeves to rotate following the connecting frame.

[0018] In one or more embodiments of the present utility model, a water delivery pipe is rotatably connected to the rotating frame. The water delivery pipe is fixedly connected to the recovery tank. Through the water delivery pipe, the treatment liquid can be conveyed into the interior of the rotating frame. A liquid discharge pipe is installed on the recovery tank. Through the liquid discharge pipe, the treatment liquid inside the recovery tank can be discharged.

[0019] In one or more embodiments of the present utility model, a pair of retaining rings are fixed on the recovery tank, and the retaining rings are rotatably connected to the support frame, and the retaining rings are used to support the support frame.

[0020] Compared with the prior art, the PSA nitrogen production tail gas recovery device of the present utility model can effectively collect oxygen in the tail gas, improve the utilization rate of resources, reduce the waste of resources, increase the oxygen production, and improve the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present utility model, and for those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0022] Figure 1 It is a sectional view of a PSA nitrogen production tail gas recovery device in an embodiment of the present utility model;

[0023] Figure 2 It is Figure 1 a schematic structural diagram of the structure shown at A in

[0024] Figure 3 It is Figure 1 a schematic structural diagram of the structure shown at B in

[0025] Figure 4 It is a partial structural schematic diagram of a PSA nitrogen production tail gas recovery device in an embodiment of the present utility model;

[0026] Figure 5 It is a three-dimensional view of a PSA nitrogen production tail gas recovery device in an embodiment of the present utility model.

[0027] Main reference numeral description:

[0028] 1 - Recovery tank, 2 - Intake mechanism, 201 - Air storage frame, 202 - Fixed block, 203 - Rotating plate, 204 - Gas

[0029] delivery pipe, 205 - Air outlet hole, 206 - Buffer layer, 207 - Rotating rod, 208 - Filter screen, 209 - Connecting rod, 210 - Stirring rod, 211 - Support ring, 212 - Inlet pipe, 213 - Exhaust pipe, 3 - Spraying mechanism, 301 - Rotating frame, 302 - Water storage sleeve, 303 - Sprinkler head, 304 - Support frame, 305 - Connecting frame, 306 - Water delivery pipe, 307 - Retaining ring, 308 - Drain pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To enable those skilled in the art to better understand the technical solutions in this utility model, the following will clearly and completely describe the technical solutions in the embodiments of this utility model in conjunction with the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this utility model without making creative efforts shall fall within the protection scope of this utility model.

[0031] As Figures 1 to 5 shown, a PSA nitrogen production tail gas recovery device in an embodiment of this utility model includes: a recovery tank 1, an air inlet mechanism 2, and a spraying mechanism 3.

[0032] As Figure 4 shown, the interior of the recovery tank 1 is used to store tail gas and treatment liquid. The air inlet mechanism 2 is installed on the recovery tank 1. The air inlet mechanism 2 includes an air storage frame 201, and the interior of the air storage frame 201 is used to store tail gas. A plurality of fixing blocks 202 are fixed on the air storage frame 201, and the fixing blocks 202 are used to fix the air storage frame 201.

[0033] As Figures 1 to 2 shown, a rotating plate 203 is rotatably connected to the air storage frame 201. The rotating plate 203 is used to block the opening on the air storage frame 201, and the rotating plate 203 can rotate on the air storage frame 201. A gas transmission pipe 204 is fixed on the rotating plate 203, and the gas transmission pipe 204 is used to transmit tail gas. A pair of air outlet holes 205 are drilled on the gas transmission pipe 204, and the tail gas inside the gas transmission pipe 204 can be discharged through the air outlet holes 205 into the interior of the recovery tank 1.

[0034] As Figure 1 shown, a buffer layer 206 is fixed inside the recovery tank 1. The buffer layer 206 can slow down the flow rate of the tail gas and the treatment liquid, so that the remaining components in the tail gas can be fully mixed with the treatment liquid. A rotating rod 207 is rotatably connected to the buffer layer 206. The rotating rod 207 is used to support the connecting frame 305 and a plurality of connecting rods 209, and can drive the connecting frame 305 to rotate following the connecting rods 209.

[0035] Among them, the interior of the buffer layer 206 is honeycomb-shaped, so that while the buffer layer 206 slows down the moving speed of the treatment liquid and the tail gas, the treatment liquid and the tail gas can pass through the buffer layer 206.

[0036] As Figures 1 to 4As shown, a plurality of filter meshes 208 are fixed on the gas storage frame 201. The filter meshes 208 are rotatably connected to the rotating rod 207, and the filter meshes 208 are used to filter impurities in the tail gas. One end of the rotating rod 207 and a plurality of gas delivery pipes 204 are fixedly connected by connecting rods 209, and the connecting rods 209 are used to connect the rotating rod 207 and the plurality of gas delivery pipes 204.

[0037] As Figure 1 shown, a stirring rod 210 is fixed on the rotating rod 207. The stirring rod 210 can stir the treatment liquid at the bottom of the recovery tank 1, so that the tail gas is dispersed, which is convenient for the treatment liquid to fully adsorb impurities in the tail gas and is also convenient for the treatment liquid to treat other substances in the tail gas.

[0038] As Figures 1 to 2 shown, a pair of support rings 211 are fixed on the rotating plate 203. The support rings 211 are rotatably connected to the gas storage frame 201, and the support rings 211 are used to support the rotating plate 203 so that the rotating plate 203 can rotate on the gas storage frame 201.

[0039] As Figures 1 to 5 shown, an air inlet pipe 212 is installed on the fixed block 202. Through the air inlet pipe 212, the tail gas can be transported into the interior of the gas storage frame 201. An exhaust pipe 213 is installed at the upper end of the recovery tank 1. Through the exhaust pipe 213, the treated oxygen can be discharged.

[0040] As Figures 1 to 3 shown, the spraying mechanism 3 is installed on the gas storage frame 201. The spraying mechanism 3 includes a rotating frame 301, and the interior of the rotating frame 301 is used to store the treatment liquid. A plurality of water storage sleeves 302 are fixed on the rotating frame 301. The interior of the water storage sleeves 302 is used to transport the treatment liquid and can support the spray nozzles 303. A plurality of spray nozzles 303 are installed on the water storage sleeves 302. Through the spray nozzles 303, the treatment liquid inside the water storage sleeves 302 can be atomized and sprayed out, which can increase the contact area between the treatment liquid and the tail gas.

[0041] As Figures 1 to 3 shown, a support frame 304 is fixed on the rotating frame 301. The support frame 304 is rotatably connected to the recovery tank 1, and the support frame 304 is used to support the rotating frame 301. One end of the rotating rod 207 away from the gas storage frame 201 is fixed with a connecting frame 305. The connecting frame 305 is fixedly connected to a plurality of water storage sleeves 302. The connecting frame 305 is used to connect the rotating rod 207 and the plurality of water storage sleeves 302 and can drive the plurality of water storage sleeves 302 to rotate following the connecting frame 305.

[0042] As Figures 1 to 5As shown, a water delivery pipe 306 is rotatably connected to the rotating frame 301. The water delivery pipe 306 is fixedly connected to the recovery tank 1. Through the water delivery pipe 306, the treatment liquid can be conveyed into the rotating frame 301. A drain pipe 308 is installed on the recovery tank 1. Through the drain pipe 308, the treatment liquid inside the recovery tank 1 can be discharged. A pair of retaining rings 307 are fixed on the recovery tank 1. The retaining rings 307 are rotatably connected to the support frame 304. The retaining rings 307 are used to support the support frame 304.

[0043] Among them, a blocking block is installed on the drain pipe 308. The blocking block can block the drain pipe 308, making it difficult for the treatment liquid inside the recovery tank 1 to be discharged through the drain pipe 308.

[0044] During specific use, the tail gas is conveyed into the air storage frame 201 through the air inlet pipe 212. The tail gas inside the air storage frame 201 can enter the air delivery pipe 204. The tail gas inside the air delivery pipe 204 can be discharged through the air outlet holes 205. The discharged tail gas can push the air delivery pipe 204 to move through the reaction force;

[0045] The air delivery pipe 204 can drive the connecting rod 209 to move, thereby driving the rotating rod 207 to rotate. The rotating rod 207 can drive the connecting frame 305 to rotate. The connecting frame 305 can drive the water storage sleeve 302 and the rotating frame 301 to rotate. The treatment liquid is injected into the rotating frame 301 through the water delivery pipe 306. The treatment liquid inside the rotating frame 301 can enter the water storage sleeve 302 and then be sprayed out atomized through the nozzle 303. The sprayed treatment liquid can treat the remaining substances in the tail gas inside the recovery tank 1, thereby recovering oxygen;

[0046] The tail gas inside the recovery tank 1 can be preliminarily treated by the treatment liquid at the bottom of the recovery tank 1, and the impurities in the tail gas can be adsorbed. After the tail gas is filtered again through the filter screen 208, the tail gas can enter the recovery tank 1. The buffer layer 206 can slow down the moving speed of the tail gas and the treatment liquid, increasing the contact time between the treatment liquid and the tail gas, thereby further improving the treatment effect of the treatment liquid on the remaining substances in the tail gas. The treated gas can be discharged through the exhaust pipe 213 for recycling.

[0047] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0048] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A PSA nitrogen production tail gas recovery device, characterized in that: include: Recycling cans; An air intake mechanism is installed on the recovery tank, and the air intake mechanism includes an air storage frame, a plurality of fixed blocks are fixed on the air storage frame, a rotating plate is rotatably connected to the air storage frame, an air delivery pipe is fixed on the rotating plate, and a pair of air outlet holes are drilled on the air delivery pipe; A spraying mechanism is installed on the gas storage frame. The spraying mechanism comprises a rotating frame. A plurality of water storage sleeves are fixed on the rotating frame. A plurality of spray heads are installed on the water storage sleeves.

2. A PSA nitrogen production tail gas recovery device according to claim 1, characterized in that: A buffer layer is fixed inside the recovery tank, and a rotating rod is rotatably connected to the buffer layer.

3. A PSA nitrogen production tail gas recovery device according to claim 2, characterized in that: A plurality of filter screens are fixed on the gas storage frame, and the filter screens are rotatably connected to the rotating rod.

4. A PSA nitrogen production tail gas recovery device according to claim 2, characterized in that: A connecting rod is fixed between one end of the rotating rod and a plurality of gas pipes, and a stirring rod is fixed on the rotating rod.

5. A PSA nitrogen production tail gas recovery device according to claim 1, characterized in that: A pair of support rings are fixed on the rotating plate, and the support rings are rotatably connected to the gas storage frame.

6. A PSA nitrogen production tail gas recovery device according to claim 1, characterized in that: An air inlet pipe is installed on the fixing block, and an exhaust pipe is installed on the upper end of the recovery tank.

7. A PSA nitrogen production tail gas recovery device according to claim 1, characterized in that: A supporting frame is fixed on the rotating frame, and the supporting frame is rotatably connected to the recovery tank.

8. A PSA nitrogen production tail gas recovery device according to claim 2, characterized in that: A connecting frame is fixed to one end of the rotating rod away from the gas storage frame, and the connecting frame is fixedly connected to a plurality of water storage sleeves.

9. A PSA nitrogen production tail gas recovery device according to claim 1, characterized in that: A water delivery pipe is rotatably connected to the rotating frame, the water delivery pipe is fixedly connected to the recovery tank, and a liquid discharge pipe is installed on the recovery tank.

10. A PSA nitrogen production tail gas recovery device according to claim 7, characterized in that: A pair of retaining rings are fixed on the recovery tank, and the retaining rings are rotatably connected to the support frame.

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