Formaldehyde absorption device

Abstract

The utility model discloses a formaldehyde absorption device which comprises a first condenser, a gas-liquid separation tank, an absorption tower, a first pump body, a second condenser, a water-sealed tank and a second pump body, the first condenser is connected with the gas-liquid separation tank through a pipeline, the gas-liquid separation tank is connected with the absorption tower through a pipeline, and absorption liquid in the absorption tower is pumped into the second condenser through the first pump body and then is pumped into the water-sealed tank through the second pump body. The second condenser is connected with an absorption tower through a pipeline, the absorption tower is connected with a water-sealed tank through a pipeline, the water-sealed tank is connected with a second pump through a pipeline, and the second pump is connected with the absorption tower through a pipeline. According to the formaldehyde absorption device disclosed by the utility model, multi-section absorption is adopted, each section is provided with the liquid distributor, the second condenser is arranged at the top of the absorption tower, the water-sealed tank is arranged outside the absorption tower, and meanwhile, gas passes through the first condenser before entering the absorption tower and then enters the gas-liquid separation tank, so that formaldehyde can be more sufficiently absorbed, and the environmental problem is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical intermediate synthesis, in particular to a formaldehyde absorption device. Background Art

[0002] As people's living standards continue to improve, the requirements for air quality are getting higher and higher. The quality of air directly affects human health. Therefore, great attention has been paid to air purification. Among them, formaldehyde contained in the air is the most harmful to the human body.

[0003] The Chinese patent with publication number CN219149705U discloses a formaldehyde absorption tower, including a treatment tower body, an air outlet pipe is provided at the upper end of the treatment tower body, an air inlet pipe is provided at the lower right end of the treatment tower body, a spray seat is fixedly installed in the middle of the inner cavity of the treatment tower body, an air guide cylinder is evenly provided on the spray seat, a spiral sheet is provided inside the air guide cylinder, the spiral sheet is fixedly welded to the inner wall of the air guide cylinder, a rotating shaft is rotatably connected in the middle of the spray seat, a water wheel seat is fixedly installed at the lower end of the rotating shaft, a pull rope is provided in an annular shape at the upper end of the rotating shaft, activated carbon adsorption balls are evenly provided on the pull rope, an adsorption layer is provided above the spray seat, and the adsorption layer is rotatably connected to the rotating shaft, a liquid outlet pipe communicating with the inside of the treatment tower body is provided at the lower left end of the treatment tower body, a liquid guide plate for liquid guidance is provided at the lower end of the inner cavity of the treatment tower body, and the left end of the liquid guide plate is inclined toward the liquid outlet pipe; the treatment effect and efficiency of formaldehyde can be further improved, but the above-mentioned existence has the following defects in actual use:

[0004] In the existing formaldehyde absorption devices, a lot of formaldehyde is still not fully absorbed, and there is an odor on site. Utility Model Content

[0005] The purpose of the utility model is to provide a formaldehyde absorption device, which can effectively improve the formaldehyde absorption efficiency and solve the problem of workshop odor, thereby solving the problem in the prior art that a lot of formaldehyde is not fully absorbed and odor exists on site.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A formaldehyde absorption device comprises a first condenser, a gas-liquid separation tank, an absorption tower, a first pump body, a second condenser, a water seal tank and a second pump body, wherein the first condenser is connected to the gas-liquid separation tank through a pipeline, the gas-liquid separation tank is connected to the absorption tower through a pipeline, the absorption liquid in the absorption tower is pumped into the second condenser through the first pump body, the second condenser is connected to the absorption tower through a pipeline, the absorption tower is also connected to the water seal tank through a pipeline, the water seal tank is connected to the second pump body through a pipeline, and the second pump body is connected to the absorption tower through a pipeline.

[0008] Preferably, the first condenser is a Venturi condenser.

[0009] Preferably, a serpentine condenser is provided inside the gas-liquid separation tank, the bottom of the air inlet pipe of the gas-liquid separation tank is a lotus-shaped distributor, and the bottom of the air inlet pipe of the gas-liquid separation tank is inserted below the liquid surface.

[0010] Preferably, a first packing layer, a second packing layer and a third packing layer are arranged on the inner side of the absorption tower, and a liquid distributor is also arranged on the absorption tower, and the liquid distributor is alternately distributed among the first packing layer, the second packing layer and the third packing layer.

[0011] Preferably, a serpentine condenser is provided on the inner side of the upper end of the absorption tower, and a storage tank is provided at the bottom of the absorption tower.

[0012] Preferably, the second condenser is a shell and tube condenser.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The formaldehyde absorption device of the utility model adopts multi-stage absorption, and each stage is provided with a liquid distributor. A second condenser is provided on the top of the absorption tower, and a water seal tank is provided on the outside. At the same time, the gas passes through the first condenser before entering the absorption tower, and then enters the gas-liquid separation tank. Formaldehyde can be more fully absorbed, effectively solving environmental problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the formaldehyde absorption device of the utility model;

[0016] Figure 2 It is a structural diagram of the absorption tower of the utility model.

[0017] In the figure: 1. first condenser; 2. gas-liquid separation tank; 21. serpentine condenser; 3. absorption tower; 31. first packing layer; 32. second packing layer; 33. third packing layer; 34. liquid distributor; 35. storage tank; 4. first pump body; 5. second condenser; 6. water seal tank; 7. second pump body. DETAILED DESCRIPTION

[0018] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In order to solve the problem that a lot of formaldehyde is not fully absorbed by the existing formaldehyde absorption device, there is still odor on site, please refer to Figure 1-Figure 2 , this embodiment provides the following technical solutions:

[0020] A formaldehyde absorption device comprises a first condenser 1, a gas-liquid separation tank 2, an absorption tower 3, a first pump body 4, a second condenser 5, a water seal tank 6 and a second pump body 7. The first condenser 1 is connected to the gas-liquid separation tank 2 through a pipeline, the gas-liquid separation tank 2 is connected to the absorption tower 3 through a pipeline, the absorption liquid in the absorption tower 3 is pumped into the second condenser 5 through the first pump body 4, the second condenser 5 is connected to the absorption tower 3 through a pipeline, the absorption tower 3 is also connected to the water seal tank 6 through a pipeline, the water seal tank 6 is connected to the second pump body 7 through a pipeline, and the second pump body 7 is connected to the absorption tower 3 through a pipeline.

[0021] It should be noted that after the formaldehyde reaction gas is condensed by the first condenser 1, it enters the gas-liquid separation tank 2 for separation, and the gas enters the absorption tower 3 from the top of the gas-liquid separation tank 2, wherein the gas enters the absorption tower 3 in sections for absorption, and the absorption liquid enters the storage tank 35 at the bottom of the absorption tower 3, and then circulates back to the absorption tower 3 through the first pump body 4, and the absorption liquid with qualified content is extracted through the first pump body 4, and the gas coming out of the top of the absorption tower 3 enters the water seal tank 6. After the formaldehyde content in the water seal tank 6 reaches a certain content, it is pumped back to the absorption tower 3 through the second pump body 7.

[0022] The first condenser 1 is a Venturi condenser.

[0023] It should be noted that, after the formaldehyde reaction gas is condensed by the first condenser 1 , it enters the gas-liquid separation tank 2 for separation.

[0024] A serpentine condenser 21 is provided inside the gas-liquid separation tank 2. The bottom of the air inlet pipe of the gas-liquid separation tank 2 is a lotus-shaped distributor, and the bottom of the air inlet pipe of the gas-liquid separation tank 2 is inserted below the liquid surface.

[0025] It should be noted that after the formaldehyde reaction gas is condensed by the first condenser 1 , it enters the gas-liquid separation tank 2 for separation, and the gas enters the absorption tower 3 from the top of the gas-liquid separation tank 2 .

[0026] The absorption tower 3 is provided with a first packing layer 31 , a second packing layer 32 and a third packing layer 33 on the inner side thereof. The absorption tower 3 is also provided with a liquid distributor 34 , which is alternately distributed among the first packing layer 31 , the second packing layer 32 and the third packing layer 33 .

[0027] It should be noted that there are three liquid distributors 34 , and the three liquid distributors 34 are alternately distributed among the first packing layer 31 , the second packing layer 32 and the third packing layer 33 .

[0028] A serpentine condenser 21 is disposed inside the upper end of the absorption tower 3 , and a storage tank 35 is disposed at the bottom of the absorption tower 3 .

[0029] The second condenser 5 is a shell-and-tube condenser.

[0030] Working principle: After the formaldehyde reaction gas is condensed by the first condenser 1, it enters the gas-liquid separation tank 2 for separation, and the gas enters the absorption tower 3 from the top of the gas-liquid separation tank 2, where the gas enters the absorption tower 3 in sections for absorption, and the absorption liquid enters the storage tank 35 at the bottom of the absorption tower 3, and then circulates back to the absorption tower 3 through the first pump body 4. The absorption liquid with qualified content is extracted through the first pump body 4, and the gas coming out of the top of the absorption tower 3 enters the water seal tank 6. When the formaldehyde content in the water seal tank 6 reaches a certain content, it is pumped back to the absorption tower 3 through the second pump body 7, which can effectively improve the formaldehyde absorption efficiency and solve the odor problem in the workshop.

[0031] In summary: the formaldehyde absorption device of the utility model adopts multi-stage absorption, and each stage is provided with a liquid distributor 34, a second condenser 5 is provided on the top of the absorption tower 3, and a water seal tank 6 is provided on the outside. At the same time, the gas passes through the first condenser 1 before entering the absorption tower 3, and then enters the gas-liquid separation tank 2. Formaldehyde can be more fully absorbed, effectively solving environmental problems.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A formaldehyde absorption device, comprising a first condenser (1), a gas-liquid separation tank (2), an absorption tower (3), a first pump body (4), a second condenser (5), a water seal tank (6) and a second pump body (7), Features: The first condenser (1) is connected to a gas-liquid separation tank (2) via a pipeline, the gas-liquid separation tank (2) is connected to an absorption tower (3) via a pipeline, the absorption liquid in the absorption tower (3) is pumped into a second condenser (5) via a first pump body (4), the second condenser (5) is connected to the absorption tower (3) via a pipeline, the absorption tower (3) is also connected to a water seal tank (6) via a pipeline, the water seal tank (6) is connected to a second pump body (7) via a pipeline, and the second pump body (7) is connected to the absorption tower (3) via a pipeline.

2. A formaldehyde absorption device according to claim 1, Features: The first condenser (1) is a Venturi condenser.

3. A formaldehyde absorption device according to claim 2, Features: The gas-liquid separation tank (2) is provided with a serpentine condenser (21) inside, the bottom of the air inlet pipe of the gas-liquid separation tank (2) is a lotus-shaped distributor, and the bottom of the air inlet pipe of the gas-liquid separation tank (2) is inserted below the liquid surface.

4. A formaldehyde absorption device according to claim 3, Features: A first packing layer (31), a second packing layer (32) and a third packing layer (33) are arranged on the inner side of the absorption tower (3), and a liquid distributor (34) is also arranged on the absorption tower (3), and the liquid distributor (34) is alternately distributed among the first packing layer (31), the second packing layer (32) and the third packing layer (33).

5. A formaldehyde absorption device according to claim 4, Features: A serpentine condenser (21) is arranged on the inner side of the upper end of the absorption tower (3), and a storage tank (35) is arranged at the bottom of the absorption tower (3).

6. A formaldehyde absorption device according to claim 5, Features: The second condenser (5) is a shell-and-tube condenser.

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