Dehumidifier for adipic acid tail gas

Abstract

The dehumidifier comprises a dehumidification box, a first dehumidification cavity is formed in the lower portion in the dehumidification box, a filter screen is installed on the lower portion in the first dehumidification cavity, a spraying head is installed on the upper portion in the first dehumidification cavity, a gas inlet pipe is arranged on the inner wall of the first dehumidification cavity in a penetrating mode, and a gas outlet pipe is arranged on the inner wall of the first dehumidification cavity in a penetrating mode. A second dehumidification cavity is formed in the upper portion of the interior of the dehumidification box, a waterproof breathable film is installed in the second dehumidification cavity, a first water pump is installed on the lower portion of the right side of the dehumidification box, a drainage valve is installed at the upper end of the right side of the dehumidification box, and a second water pump is installed on the lower portion of the left side of the dehumidification box; an evaporator is installed in the middle of the left side of the dehumidification box, and an air pump is installed on the upper portion of the left side of the dehumidification box. According to the adipic acid tail gas dehumidification device, the adipic acid tail gas is dehumidified by matching a liquid dehumidification mode with a membrane separation mode, so that the dehumidification efficiency and the dehumidification effect of the adipic acid tail gas are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dehumidification of adipic acid tail gas, in particular to a dehumidifier for adipic acid tail gas. Background Art

[0002] Adipic acid tail gas primarily originates from the industrial production of adipic acid. During this process, the use of large amounts of chemicals such as nitric acid produces a significant amount of nitrogen oxide tail gas, including nitrous oxide (N2O) and other types of nitrogen oxides. This tail gas contains gases such as N2O, NO, NO2, N2, and O2. The N2O in adipic acid tail gas is a highly valuable chemical that can be used as an anesthetic, foaming agent, combustion aid, and N and O atom donor. Therefore, adipic acid tail gas must be treated for subsequent use. Dehumidification is a crucial step in this process, and dehumidifiers are essential equipment for this purpose.

[0003] China Authorization Announcement No. CN211551856U discloses a dehumidifier, including an upper cover, a base, a fan, and a humidity display device. The upper cover has an outer wall with air vents, a side wall with an installation opening, and the humidity display device is detachably mounted at the installation opening. The bottom of the base has an air inlet, the top of the base has an air outlet, and the fan is placed in the inner cavity of the base. The upper cover is snapped onto the base, and a desiccant chamber is formed between the upper cover and the base. The fan draws fresh air from the outside into the desiccant chamber through the air inlet and the air outlet. The user can directly remove the humidity display device and replace it with another one. The operation is simple. The fan draws fresh air from the outside into the electrical component chamber along the air inlet and then into the desiccant chamber through the air outlet, causing the desiccant to dry quickly and accelerating the dehumidification effect. After drying, the desiccant has a water absorption function. The user does not need to frequently replace the desiccant, which improves the practicality of the dehumidifier.

[0004] Existing dehumidifiers absorb and dehumidify water vapor through desiccant. However, after the desiccant absorbs a certain amount of water, it needs to be replaced or dried. During this period, it cannot work, which will affect the dehumidification efficiency of adipic acid tail gas. Therefore, we propose a dehumidifier for adipic acid tail gas. Utility Model Content

[0005] The purpose of the present utility model is to provide a dehumidifier for adipic acid tail gas, so as to solve the problem proposed in the above background technology that the existing dehumidifier absorbs water vapor and dehumidifies it through a desiccant, and the desiccant needs to be replaced or dried after absorbing a certain amount of water. During this period, it cannot work, which in turn affects the dehumidification efficiency of the adipic acid tail gas.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dehumidifier for adipic acid tail gas, comprising a dehumidification box, a first dehumidification chamber is opened at the lower interior of the dehumidification box, a filter is installed at the lower interior of the first dehumidification chamber, a spray head is installed at the upper interior of the first dehumidification chamber, an air inlet pipe is passed through the inner wall of the first dehumidification chamber, a second dehumidification chamber is opened at the upper interior of the dehumidification box, a waterproof and breathable membrane is installed at the interior of the second dehumidification chamber, a first water pump is installed at the lower right side of the dehumidification box, a drain valve is installed at the upper right end of the dehumidification box, a second water pump is installed at the lower left side of the dehumidification box, an evaporator is installed in the middle left side of the dehumidification box, and an air pump is installed at the upper left side of the dehumidification box.

[0007] Preferably, the first water pump is further provided with:

[0008] The first liquid infusion pipe is installed at the output end of the first water pump, and the output end of the first water pump is connected to the sprinkler head through the first liquid infusion pipe.

[0009] Preferably, the input end of the second water pump is communicated with the first dehumidification chamber, and the output end of the second water pump is communicated with the input end of the evaporator.

[0010] Preferably, the evaporator is further provided with:

[0011] The second liquid infusion pipe is installed at the output end of the evaporator, and the evaporator is connected with the first dehumidification chamber through the second liquid infusion pipe.

[0012] Preferably, the air pump is further provided with:

[0013] An air delivery pipe is installed at the output end of the air pump, and the output end of the air pump is connected to the second dehumidification chamber through the air delivery pipe.

[0014] Preferably, the drain valve is connected to the second dehumidification chamber.

[0015] Preferably, the first dehumidification chamber is further provided with:

[0016] A drain pipe is installed below the first dehumidification chamber, and a pipe cap is threadedly installed below the drain pipe.

[0017] Preferably, the second dehumidification chamber is further provided with:

[0018] An exhaust port is opened above the second dehumidification chamber.

[0019] Compared with the prior art, the present invention provides a dehumidifier for adipic acid tail gas, which has the following beneficial effects:

[0020] 1. The utility model dehumidifies adipic acid tail gas by using liquid dehumidification in conjunction with membrane separation, thereby greatly improving the dehumidification efficiency and effect of adipic acid tail gas;

[0021] 2. The utility model can evaporate the hydrochloric acid solution used for dehumidification when the dehumidifier is working by arranging an evaporator, evaporate the moisture absorbed in the hydrochloric acid solution, and allow the hydrochloric acid solution to recover and absorb moisture again, thereby avoiding frequent replacement of the hydrochloric acid solution, reducing the cost of using the hydrochloric acid solution, and improving the dehumidification efficiency of the dehumidifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] In the figure: 1. Dehumidification box; 2. Drain pipe; 3. Pipe cap; 4. First water pump; 5. First liquid delivery pipe; 6. Air inlet pipe; 7. Spray head; 8. First dehumidification chamber; 9. Drain valve; 10. Second dehumidification chamber; 11. Exhaust port; 12. Waterproof and breathable membrane; 13. Gas delivery pipe; 14. Air pump; 15. Second liquid delivery pipe; 16. Evaporator; 17. Filter; 18. Second water pump. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1A dehumidifier for adipic acid tail gas includes a dehumidification box 1, a first dehumidification chamber 8 is opened at the lower part of the dehumidification box 1, a filter 17 is installed at the lower part of the first dehumidification chamber 8, a spray head 7 is installed at the upper part of the first dehumidification chamber 8, and an air inlet pipe 6 is passed through the inner wall of the first dehumidification chamber 8; a drain pipe 2 is installed at the lower part of the first dehumidification chamber 8, a pipe cap 3 is threadedly installed at the lower part of the drain pipe 2, a second dehumidification chamber 10 is opened at the upper part of the dehumidification box 1, and a filter 17 is installed at the lower part of the first dehumidification chamber 8. There is a waterproof breathable membrane 12; an exhaust port 11, which is opened above the second dehumidification chamber 10, and a first water pump 4 is installed at the lower right side of the dehumidification box 1; a first liquid infusion pipe 5, which is installed at the output end of the first water pump 4, and the output end of the first water pump 4 is connected with the sprinkler head 7 through the first liquid infusion pipe 5, and a drain valve 9 is installed at the upper right end of the dehumidification box 1; the drain valve 9 is connected with the second dehumidification chamber 10, and a second water pump 18 is installed at the lower left side of the dehumidification box 1, and a second liquid infusion pipe 5 is installed at the middle left side of the dehumidification box 1. An evaporator 16 is installed; the input end of the second water pump 18 is connected to the first dehumidification chamber 8, and the output end of the second water pump 18 is connected to the input end of the evaporator 16; a second infusion pipe 15 is installed at the output end of the evaporator 16, and the evaporator 16 is connected to the first dehumidification chamber 8 through the second infusion pipe 15; by setting the evaporator 16, the hydrochloric acid solution used for dehumidification can be evaporated when the dehumidifier is working, and the water absorbed in the hydrochloric acid solution is evaporated, so that the hydrochloric acid solution can be restored to absorb moisture again, avoiding frequent replacement of the hydrochloric acid solution, reducing the cost of using the hydrochloric acid solution, and improving the dehumidification efficiency of the dehumidifier. An air pump 14 is installed on the upper left side of the dehumidification box 1; an air pipe 13 is installed at the output end of the air pump 14, and the output end of the air pump 14 is connected to the second dehumidification chamber 10 through the air pipe 13; the adipic acid tail gas is dehumidified by adopting a liquid dehumidification method and a membrane separation method to cooperate with each other, which greatly improves the dehumidification efficiency and dehumidification effect of the adipic acid tail gas.

[0026] Working principle: When using the dehumidifier for adipic acid tail gas, first inject a certain amount of hydrochloric acid solution into the first dehumidification chamber 8, and then the controller controls the first water pump 4 to pump the hydrochloric acid solution through the first liquid infusion pipe 5 to the spray head 7 for spraying, and then the adipic acid tail gas is pumped into the first dehumidification chamber 8 through the air inlet pipe 6, and the sprayed hydrochloric acid solution absorbs the water vapor in the adipic acid tail gas, and the filter 17 filters the fallen hydrochloric acid solution to filter out the impurities in the hydrochloric acid solution, and then the controller controls the air pump 14 to work and pump the adipic acid tail gas sprayed in the first dehumidification chamber 8 through the air pipe 13 to the second dehumidification chamber 10. As more and more gas is pumped, the air pressure inside the second dehumidification chamber 10 increases, and the adipic acid tail gas will be under pressure. Under the action of the water vapor, the water vapor is discharged through the waterproof and breathable membrane 12, while the water vapor is blocked and remains in the second dehumidification chamber 10, thereby removing the residual water vapor in the adipic acid tail gas, and the dehumidified adipic acid tail gas is discharged from the exhaust port 11. Then, the controller controls the second water pump 18 to pump the hydrochloric acid solution in the first dehumidification chamber 8 to the inside of the evaporator 16 model: RE-201D, and evaporates the water absorbed in the hydrochloric acid solution at a certain temperature and pressure. The evaporated hydrochloric acid solution is then transported to the inside of the first dehumidification chamber 8 through the second infusion pipe 15. Finally, the hydrochloric acid solution in the first dehumidification chamber 8 can be discharged through the drain pipe 2, and the water filtered out of the second dehumidification chamber 10 can be discharged by opening the drain valve 9. This is the working principle of the dehumidifier for adipic acid tail gas.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dehumidifier for adipic acid tail gas, characterized in that: include A dehumidification box (1), wherein a first dehumidification chamber (8) is provided at the lower interior of the dehumidification box (1), a filter (17) is installed at the lower interior of the first dehumidification chamber (8), a spray head (7) is installed at the upper interior of the first dehumidification chamber (8), an air inlet pipe (6) is passed through the inner wall of the first dehumidification chamber (8), a second dehumidification chamber (10) is provided at the upper interior of the dehumidification box (1), a waterproof breathable membrane (12) is installed at the lower right side of the dehumidification box (1), a drain valve (9) is installed at the upper right end of the dehumidification box (1), a second water pump (18) is installed at the lower left side of the dehumidification box (1), an evaporator (16) is installed at the middle left side of the dehumidification box (1), and an air pump (14) is installed at the upper left side of the dehumidification box (1).

2. A dehumidifier for adipic acid tail gas according to claim 1, characterized in that: The first water pump (4) is further provided with: A first liquid infusion pipe (5) is installed at the output end of the first water pump (4), and the output end of the first water pump (4) is connected to the spray head (7) through the first liquid infusion pipe (5).

3. The dehumidifier for adipic acid tail gas according to claim 1, characterized in that: The input end of the second water pump (18) is communicated with the first dehumidification chamber (8), and the output end of the second water pump (18) is communicated with the input end of the evaporator (16).

4. The dehumidifier for adipic acid tail gas according to claim 1, characterized in that: The evaporator (16) is further provided with: A second liquid infusion pipe (15) is installed at the output end of the evaporator (16), and the evaporator (16) is connected to the first dehumidification chamber (8) through the second liquid infusion pipe (15).

5. The dehumidifier for adipic acid tail gas according to claim 1, characterized in that: The air pump (14) is further provided with: An air delivery pipe (13) is installed at the output end of the air pump (14), and the output end of the air pump (14) is connected to the second dehumidification chamber (10) through the air delivery pipe (13).

6. The dehumidifier for adipic acid tail gas according to claim 1, characterized in that: The drainage valve (9) is in communication with the second dehumidification chamber (10).

7. The dehumidifier for adipic acid tail gas according to claim 1, characterized in that: The first dehumidification chamber (8) is further provided with: A drain pipe (2) is installed below the first dehumidification chamber (8), and a pipe cap (3) is threadedly installed below the drain pipe (2).

8. The dehumidifier for adipic acid tail gas according to claim 1, characterized in that: The second dehumidification chamber (10) is further provided with: An exhaust port (11) is provided above the second dehumidification chamber (10).

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