Waste gas recovery treatment device in molecular sieve raw powder exchange process and exchange device

Abstract

The utility model discloses a waste gas recovery treatment device in a molecular sieve raw powder exchange process and an exchange device, and relates to the field of chemical waste gas treatment, the waste gas recovery treatment device comprises an absorption tank and an adsorption tower, the absorption tank and the adsorption tower are sequentially communicated, and the gas inlet end of the absorption tank is communicated with a primary waste gas conveying pipe; the first-stage waste gas conveying pipe is used for sucking waste gas generated by the blending tank into the absorption tank, the gas outlet end of the absorption tank is communicated with the gas inlet end of the adsorption tower through a second-stage waste gas conveying pipe, and the second-stage waste gas conveying pipe is used for sucking gas exhausted by the absorption tank into the adsorption tower. Two-stage treatment is carried out on toxic waste gas generated during preparation of the exchange liquid, toxic substances and pollutants are separated out, qualified air capable of being directly discharged is obtained, the waste gas generated during preparation of the exchange liquid is well treated, and pollution caused by the fact that the waste gas is directly discharged into the air is avoided.

Description

Technical Field

[0001] The utility model relates to the field of chemical waste gas treatment, in particular to a waste gas recovery and treatment device during the exchange process of molecular sieve raw powder. Background Art

[0002] During the exchange process of molecular sieve raw powder, ammonium exchange and organic modification are often carried out. Ammonia gas and some organic waste gases are usually generated during the exchange process. If these gases are directly discharged without treatment, they will cause harm to human body and environment. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a waste gas recovery and treatment device during the exchange process of molecular sieve raw powder, so as to solve the problems existing in the above-mentioned prior art, carry out two-stage treatment on the toxic waste gas generated during the preparation of the exchange solution, separate the toxic substances and pollutants, obtain qualified air that can be directly discharged, and well treat the waste gas generated during the preparation of the exchange solution, avoiding the pollution caused by the direct discharge of waste gas into the air.

[0004] The utility model also provides a molecular sieve raw powder exchange device, which includes the waste gas recovery and treatment device during the exchange process of molecular sieve raw powder. Its technical effects have been described above and will not be repeated here.

[0005] To achieve the above purpose, the utility model provides the following scheme:

[0006] The utility model provides a waste gas recovery and treatment device during the exchange process of molecular sieve raw powder, which includes an absorption tank and an adsorption tower. The absorption tank and the adsorption tower are connected in sequence;

[0007] The air inlet end of the absorption tank is connected to a primary waste gas pipeline. The primary waste gas pipeline is used to suck the waste gas generated by the preparation tank into the absorption tank. The air outlet end of the absorption tank is connected to the air inlet end of the adsorption tower through a secondary waste gas pipeline. The secondary waste gas pipeline is used to suck the gas discharged from the absorption tank into the adsorption tower.

[0008] Preferably, a pipeline connected to the air inlet end of the absorption tank is arranged in the absorption tank. An absorption solution is contained in the absorption tank. The air outlet end of the exhaust pipe is located below the liquid level of the absorption solution. The air outlet end of the exhaust pipe is a coiled pipe, and air outlet holes are arranged on the air outlet end of the exhaust pipe.

[0009] Preferably, the air outlet end of the exhaust pipe is located at the bottom of the absorption tank.

[0010] Preferably, an absorption solution circulating spraying device is arranged in the absorption tank.

[0011] Preferably, the absorption solution contained in the absorption tank is an alkaline solution.

[0012] Preferably, a stirring device is arranged in the absorption tank.

[0013] Preferably, a separation layer and an absorption layer are sequentially arranged in the adsorption tower from bottom to top.

[0014] Preferably, the separation layer is a cyclone separation kettle, and the absorption layer is provided with an activated carbon adsorption plate.

[0015] Preferably, a first vacuum pump is installed on the primary waste gas pipeline, and a second vacuum pump is installed on the secondary waste gas pipeline.

[0016] The utility model also provides a molecular sieve raw powder exchange device, which comprises a preparation tank, an exchange device assembly and the waste gas recovery and treatment device in the above-mentioned molecular sieve raw powder exchange process. The air outlet end of the preparation tank is communicated with the primary waste gas pipeline, and the discharge end of the preparation tank is communicated with the feed end of the exchange device assembly.

[0017] The utility model has achieved the following technical effects compared with the prior art:

[0018] The utility model provides a waste gas recovery and treatment device in the process of molecular sieve raw powder exchange, which performs two-stage treatment on the toxic waste gas generated during the preparation of the exchange liquid, separates the toxic substances and pollutants, obtains qualified air that can be directly discharged, and well treats the waste gas generated during the preparation of the exchange liquid, avoiding pollution caused by direct discharge of the waste gas into the air.

[0019] The utility model also provides a molecular sieve raw powder exchange device, which comprises the waste gas recovery and treatment device in the above-mentioned molecular sieve raw powder exchange process. Its technical effects have been described above and will not be repeated here.

[0020] The utility model has also achieved the following technical effects compared with the prior art:

[0021] 1. In the utility model, the air outlet end of the exhaust pipe is a coiled pipe, and the air outlet range of the exhaust pipe is large, which can allow the waste gas to be fully mixed and reacted with the lye. The coiled pipe is arranged at the bottom of the absorption tank, and the discharged waste gas can play a tumbling role, accelerating the flow of the lye in the absorption tank, increasing the contact between the active components in the lye and the waste gas, and improving the reaction effect;

[0022] 2. In the utility model, the adsorption tower is divided into two parts, a separation layer and an absorption layer, which can separate and absorb water vapor. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the waste gas recovery and treatment device during the exchange process of molecular sieve raw powder;

[0025] Figure 2 It is a schematic diagram of the internal structure of the absorption tank in the present invention;

[0026] Figure 3 It is a schematic diagram of the internal structure of the adsorption tower in the present invention;

[0027] Figure 4 It is a schematic diagram of the overall structure of the molecular sieve raw powder exchange device.

[0028] Among them, 1. Absorption tank; 11. Primary waste gas pipeline; 12. Secondary waste gas pipeline; 13. Exhaust pipe; 14. Absorption solution spraying device; 15. Stirring device; 16. Discharge port; 2. Adsorption tower; 21. Separation layer; 22. Absorption layer; 41. First vacuum pump; 42. Second vacuum pump; 5. Blending tank; 6. Exchange device assembly. Specific embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a waste gas recovery and treatment device during the exchange process of molecular sieve raw powder, which can effectively treat the waste gas generated during the preparation of the exchange solution and avoid pollution caused by direct discharge of the waste gas into the air.

[0031] The present invention also provides a molecular sieve raw powder exchange device, which includes the waste gas recovery and treatment device during the exchange process of the molecular sieve raw powder. The technical effects have been described above and will not be repeated here.

[0032] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will further describe the present invention in detail with reference to the drawings and specific embodiments.

[0033] Such as Figure 1As shown in the figure, an exhaust gas recovery and treatment device during the exchange process of molecular sieve raw powder includes an absorption tank 1 and an adsorption tower 2. The absorption tank 1 and the adsorption tower 2 are connected in sequence. The intake end of the absorption tank 1 is connected to a primary exhaust gas pipeline 11, and the primary exhaust gas pipeline 11 is used to suck the exhaust gas generated by a preparation tank 5 into the absorption tank 1. The outlet end of the absorption tank 1 is connected to the intake end of the adsorption tower 2 through a secondary exhaust gas pipeline 12, and the secondary exhaust gas pipeline 12 is used to suck the gas discharged from the absorption tank 1 into the adsorption tower 2.

[0034] In the present utility model, the absorption tank 1 processes the exhaust gas directly generated by the preparation tank 5. The main component of these exhaust gases is ammonia. The primary treated gas obtained after the absorption reaction in the absorption tank 1 enters the adsorption tower 2 through the secondary exhaust gas pipeline 12. In the adsorption tower 2, the main processes are dust removal and dehumidification. The tiny solid particulate matters in the primary treated gas are filtered out and the separated water droplets are absorbed. Finally, a relatively clean and dry gas is obtained. The waste solution in the absorption tank 1 can be discharged from a discharge port 16.

[0035] As Figure 2 shown in the figure, an exhaust pipe 13 communicating with the intake end of the absorption tank 1 is arranged in the absorption tank 1. An absorption solution is contained in the absorption tank 1. The outlet end of the exhaust pipe 13 is located below the liquid level of the absorption solution. The outlet end of the exhaust pipe 13 is a coiled pipe. The outlet end of the exhaust pipe 13 is located at the bottom of the absorption tank 1. Air holes are arranged on the outlet end of the exhaust pipe 13, and the air holes face the top of the absorption tank 1. The coiled pipe structure can increase the exhaust area. At the same time, during the exhaust process, the bubbles move upward from the bottom of the absorption tank 1 to play a stirring role, improving the contact effect between the absorption solution and the exhaust gas. The outlet end of the exhaust pipe 13 can also be a perforated disc or a perforated square plate.

[0036] As Figure 2 shown in the figure, in a preferred embodiment, an absorption solution circulating spraying device 14 is arranged in the absorption tank 1. The circulating spraying device 14 mainly includes a suction device, a circulating pipe and a sprayer. The suction device is installed below the liquid level of the absorption solution, the sprayer is installed above the liquid level of the absorption solution, and the circulating pipe connects the suction device and the sprayer. During the working process, the suction device transports the absorption solution into the sprayer to complete the spraying, and then the sprayer sprays the absorption solution outward. The purpose of the circulating spraying device 14 is to spray the gas discharged from the absorption solution to further absorb the residual exhaust gas. A liquid level height monitoring device is arranged in the absorption tank 1 to control the liquid level height within a reasonable range to ensure normal spraying.

[0037] In a preferred embodiment, the absorption solution contained in the absorption tank 1 is an alkaline solution, and the specific composition of the alkaline solution is determined according to actual treatment requirements. The alkaline solution used in the present invention is an aqueous solution, and the solute is usually potassium hydroxide or sodium hydroxide.

[0038] As Figure 1 shown, the absorption tank 1 is provided with a discharge port 16 for discharging waste liquid.

[0039] As Figure 2 shown, a stirring device 15 is arranged in the absorption tank 1.

[0040] As Figure 3 shown, a separation layer 21 and an absorption layer 22 are sequentially arranged in the adsorption tower 2 from bottom to top. In a preferred embodiment, the separation layer 21 is a cyclone separation kettle, and the absorption layer 22 is provided with an activated carbon adsorption plate.

[0041] As Figure 1 shown, a first vacuum pump 41 is installed on the primary waste gas pipeline 11, and a second vacuum pump 42 is installed on the secondary waste gas pipeline 12. The first vacuum pump 41 and the second vacuum pump 42 can accelerate the gas flow rate.

[0042] As Figure 4 shown, the present invention also provides a molecular sieve raw powder exchange device, which includes a preparation tank 5, an exchange device assembly 6, and the waste gas recovery and treatment device in the above-mentioned molecular sieve raw powder exchange process. The gas outlet end of the preparation tank 5 is communicated with the primary waste gas pipeline 11, the discharge end of the preparation tank 5 is communicated with the feed end of the exchange device assembly 6. The preparation tank 5 is used for preparing the exchange liquid, the exchange device assembly 6 is used for carrying out the exchange process, and the exchange device assembly 6 can adopt an exchange device in the prior art.

[0043] Specific examples are applied in the present invention to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. An exhaust gas recovery and treatment device during the ion exchange process of molecular sieve raw powder, characterized in that: It includes an absorption tank (1) and an adsorption tower (2), and the absorption tank (1) and the adsorption tower (2) are connected in sequence; The intake end of the absorption tank (1) is connected to a primary waste gas pipeline (11), and the primary waste gas pipeline (11) is used to suck the waste gas generated by the blending tank (5) into the absorption tank (1). The outlet end of the absorption tank (1) is connected to the intake end of the adsorption tower (2) through a secondary waste gas pipeline (12), and the secondary waste gas pipeline (12) is used to suck the gas discharged from the absorption tank (1) into the adsorption tower (2).

2. The waste gas recovery and treatment device during the ion exchange process of the molecular sieve raw powder according to claim 1, characterized in that: A discharge pipe (13) communicating with the intake end of the absorption tank (1) is arranged in the absorption tank (1). An absorption solution is contained in the absorption tank (1). The outlet end of the discharge pipe (13) is located below the liquid level of the absorption solution. The outlet end of the discharge pipe (13) is a coiled pipe, and air holes are arranged on the outlet end of the discharge pipe (13).

3. The waste gas recovery and treatment device during the ion exchange process of the molecular sieve raw powder according to claim 2, characterized in that: The outlet end of the discharge pipe (13) is located at the bottom of the absorption tank (1).

4. The waste gas recovery and treatment device during the ion exchange process of the molecular sieve raw powder according to claim 2, wherein: An absorption solution circulating spraying device (14) is arranged in the absorption tank (1).

5. The waste gas recovery and treatment device during the ion exchange process of the molecular sieve raw powder according to claim 2, characterized in that: The absorption solution contained in the absorption tank (1) is an alkaline solution.

6. The waste gas recovery and treatment device during the ion exchange process of the molecular sieve raw powder according to claim 1, wherein: A stirring device (15) is arranged in the absorption tank (1).

7. The waste gas recovery and treatment device during the ion exchange process of the molecular sieve raw powder according to claim 1, wherein: A separation layer (21) and an absorption layer (22) are sequentially arranged in the adsorption tower (2) from bottom to top.

8. The waste gas recovery and treatment device during the ion exchange process of the molecular sieve raw powder according to claim 7, characterized in that: The separation layer (21) is a cyclone separation kettle, and activated carbon adsorption plates are arranged in the absorption layer (22).

9. The waste gas recovery and treatment device during the ion exchange process of the molecular sieve raw powder according to claim 1, wherein: A first vacuum pump (41) is installed on the primary waste gas pipeline (11), and a second vacuum pump (42) is installed on the secondary waste gas pipeline (12).

10. A molecular sieve raw powder exchange device, characterized in that: It includes the blending tank (5), an exchange device assembly (6), and the waste gas recovery and treatment device during the molecular sieve raw powder exchange according to any one of claims 1-9. The outlet end of the blending tank (5) is connected to the primary waste gas pipeline (11), and the discharge end of the blending tank (5) is connected to the feed end of the exchange device assembly (6).

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