High-concentration organic solvent purification and recovery device

Abstract

The utility model discloses a high-concentration organic solvent purification and recovery device which comprises a purification barrel, an air inlet pipe is fixedly connected to the circumferential surface of the purification barrel, an air disc is fixedly connected to the inner bottom surface of the purification barrel, a spray head is fixedly connected to the top of the air disc, an activated carbon adsorption plate is arranged above the air disc, and the activated carbon adsorption plate is fixedly connected to the spray head. A partition plate is arranged above the activated carbon adsorption plate, the bottom of the partition plate is fixedly connected with a refrigeration plate, and the refrigeration plate is annular. By arranging a purification barrel, a gas inlet pipe, a gas disc, a spray head, an activated carbon adsorption plate, a partition plate, a refrigeration plate, a lower gas outlet pipe, a molecular sieve, a booster pump, a breather pipe, an upper gas outlet pipe, an adsorption barrel, a feeding pipe, an exhaust pipe, a discharging pipe, a gas pressure sensor, an upper liquid discharging pipe and a lower liquid discharging pipe, organic waste gas can be subjected to multiple liquefaction recovery, and the recovery rate of an organic solvent is increased; and emission of toxic gas is reduced, the safety of the device is improved, and air pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of organic solvent purification and recovery, in particular to a high-concentration organic solvent purification and recovery device. Background Art

[0002] A large amount of organic waste gas is generated in the industrial production process such as petroleum, printing, steel, etc. These waste gases are often in high concentrations. When treating high-concentration organic waste gas, the condensation absorption method is usually used, that is, the waste gas is introduced into the adsorbent for liquefaction treatment, thereby obtaining a high-concentration organic solvent.

[0003] In existing organic solvent purification and recovery devices, condensation is generally followed by adsorption by activated carbon, and then the activated carbon is desorbed. However, a large amount of organic waste gas cannot be recovered, resulting in low recovery efficiency. In addition, the organic waste gas also contains certain toxicity, which can cause air pollution and harm to the human body. Utility Model Content

[0004] The utility model aims to provide a high-concentration organic solvent purification and recovery device, which can perform multiple liquefaction recovery on organic waste gas, improve the recovery rate of organic solvent, reduce the emission of toxic gas, improve the safety of the device, and reduce air pollution.

[0005] To achieve the above-mentioned purpose, a high-concentration organic solvent purification and recovery device is provided, comprising: a purification barrel, an air inlet pipe is fixedly connected to the circumferential surface of the purification barrel, an air disk is fixedly connected to the inner bottom surface of the purification barrel, a nozzle is fixedly connected to the top of the air disk, an activated carbon adsorption plate is arranged above the air disk, a partition is arranged above the activated carbon adsorption plate, a refrigeration plate is fixedly connected to the bottom of the partition, the refrigeration plate is annular, a lower air outlet pipe is fixedly connected to the bottom of the partition, a molecular sieve is arranged above the partition, a booster pump is fixedly connected to the top of the purification barrel, a ventilation pipe is fixedly connected to the bottom of the booster pump, an upper air outlet pipe and an air pressure sensor are fixedly connected to the inner top surface of the purification barrel, an adsorption barrel is fixedly connected to the top of the purification barrel, a feed pipe and an exhaust pipe are fixedly connected to the top of the adsorption barrel, a discharge pipe is fixedly connected to the circumferential surface of the adsorption barrel, and an upper drain pipe and a lower drain pipe are fixedly connected to the circumferential surface of the purification barrel.

[0006] According to the high-concentration organic solvent purification and recovery device, the activated carbon adsorption plate, the partition plate and the molecular sieve are all fixedly connected to the inner circumferential surface of the purification barrel.

[0007] According to the high-concentration organic solvent purification and recovery device, the lower drain pipe is located between the gas disk and the activated carbon adsorption plate, the upper drain pipe is located between the partition and the molecular sieve, and the lower drain pipe and the air inlet pipe are arranged on both sides of the purification barrel opposite to each other.

[0008] According to the high-concentration organic solvent purification and recovery device, the number of the nozzles is multiple and evenly distributed on the gas disk.

[0009] According to the high-concentration organic solvent purification and recovery device, the bottom of the ventilation pipe is located inside the purification barrel, and the air pressure sensor is located on the left and right sides of the upper air outlet pipe respectively.

[0010] According to the high-concentration organic solvent purification and recovery device, the upper air outlet pipe is connected to the adsorption barrel in upper and lower directions.

[0011] According to the high-concentration organic solvent purification and recovery device, the adsorption barrel is filled with a chemical adsorbent.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging a purification barrel, an air inlet pipe, an air disk, a nozzle, an activated carbon adsorption plate, a partition, a refrigeration plate, a lower air outlet pipe, a molecular sieve, a booster pump, a ventilation pipe, an upper air outlet pipe, an adsorption barrel, a feed pipe, an exhaust pipe, a discharge pipe, an air pressure sensor, an upper drain pipe and a lower drain pipe, the organic waste gas can be multiple liquefied and recovered, the recovery rate of the organic solvent can be improved, the emission of toxic gases can be reduced, the safety of the device can be improved, and air pollution can be reduced.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0015] Figure 1 This is a front view of a high-concentration organic solvent purification and recovery device of the utility model;

[0016] Figure 2 This is a cross-sectional view of a high-concentration organic solvent purification and recovery device of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of middle;

[0018] Figure 4 for Figure 2 Enlarged view of B.

[0019] In the figure: 1. purification barrel; 2. air inlet pipe; 3. air disk; 4. nozzle; 5. activated carbon adsorption plate; 6. partition; 7. refrigeration plate; 8. lower air outlet pipe; 9. molecular sieve; 10. booster pump; 11. ventilation pipe; 12. upper air outlet pipe; 13. adsorption barrel; 14. feed pipe; 15. exhaust pipe; 16. discharge pipe; 17. air pressure sensor; 18. upper drain pipe; 19. lower drain pipe. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-4The utility model provides a technical solution: a high-concentration organic solvent purification and recovery device, comprising: a purification barrel 1, an air inlet pipe 2 is fixedly connected to the circumferential surface of the purification barrel 1, a gas disk 3 is fixedly connected to the inner bottom surface of the purification barrel 1, a nozzle 4 is fixedly connected to the top of the gas disk 3, a plurality of nozzles 4 are provided, and are evenly distributed on the gas disk 3, an activated carbon adsorption plate 5 is provided above the gas disk 3, which is used for the first purification and adsorption of organic waste gas, a partition 6 is provided above the activated carbon adsorption plate 5, a refrigeration plate 7 is fixedly connected to the bottom of the partition 6, and the refrigeration plate 7 is annular and used for refrigeration, The organic waste gas is accelerated to liquefy and adsorbed on the activated carbon adsorption plate 5. The bottom of the partition 6 is fixedly connected with a lower air outlet pipe 8, and a valve is arranged on the lower air outlet pipe 8. A molecular sieve 9 is arranged above the partition 6 for purifying and adsorbing the waste gas for the second time. A booster pump 10 is fixedly connected to the top of the purification barrel 1 for pressurizing the molecular sieve 9, thereby realizing the desorption of the organic solvent. The bottom of the booster pump 10 is fixedly connected with a ventilation pipe 11. The internal top surface of the purification barrel 1 is fixedly connected with an upper air outlet pipe 12 and an air pressure sensor 17. The air pressure sensor 17 is used to monitor the internal air pressure to avoid excessive air pressure. The bottom of the ventilation pipe 11 is located inside the purification barrel 1, and the air pressure sensor 17 is respectively located on the left and right sides of the upper air outlet pipe 12. The top of the purification barrel 1 is fixedly connected with an adsorption barrel 13. The upper air outlet pipe 12 is connected to the adsorption barrel 13 up and down. A valve is provided on the upper air outlet pipe 12. The top of the adsorption barrel 13 is fixedly connected with a feed pipe 14 and an exhaust pipe 15. The adsorption barrel 13 is filled with a chemical adsorbent for purifying the final exhaust gas and discharging it after removing the toxic gas. A discharge pipe 16 is fixedly connected to the circumferential surface of the adsorption barrel 13. There are an upper drain pipe 18 and a lower drain pipe 19. The lower drain pipe 19 is located between the gas disk 3 and the activated carbon adsorption plate 5. The upper drain pipe 18 is located between the partition 6 and the molecular sieve 9. The lower drain pipe 19 is arranged on both sides of the purification barrel 1 opposite to the air inlet pipe 2. After the activated carbon adsorption plate 5 and the molecular sieve 9 adsorb the organic waste gas respectively, the booster pump 10 is used to increase the pressure above the molecular sieve 9, so that the organic solvent on the molecular sieve 9 is desorbed and discharged from the upper drain pipe 18. At the same time, steam is injected into the purification barrel 1 through the air inlet pipe 2, so that the activated carbon adsorption plate 5 completes desorption and is discharged from the lower drain pipe 19.

[0022] The activated carbon adsorption plate 5 , the partition plate 6 and the molecular sieve 9 are all fixedly connected to the inner circumferential surface of the purification barrel 1 .

[0023] Working principle: Inject the organic waste gas from the air inlet pipe 2 into the gas disk 3. Under the action of the nozzle 4, the organic waste gas is evenly sprayed onto the activated carbon adsorption plate 5. After being adsorbed by the activated carbon adsorption plate 5, the remaining gas enters the upper part from the lower air outlet pipe 8, and is adsorbed by the molecular sieve 9 for the second time, and then enters the adsorption barrel 13 from the upper air outlet pipe 12. It is fully adsorbed and purified by the chemical adsorbent in the adsorption barrel 13, and then discharged from the exhaust pipe 15. During desorption, start the booster pump 10 to desorb the molecular sieve 9, and discharge the desorbed organic solvent from the upper drain pipe 18. Steam is injected into the air inlet pipe 2 from the bottom, so that the activated carbon adsorption plate 5 completes desorption and is discharged from the lower drain pipe 19.

[0024] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A high-concentration organic solvent purification and recovery device, comprising: A purification barrel (1), characterized in that an air inlet pipe (2) is fixedly connected to the circumferential surface of the purification barrel (1), an air disk (3) is fixedly connected to the inner bottom surface of the purification barrel (1), a nozzle (4) is fixedly connected to the top of the air disk (3), an activated carbon adsorption plate (5) is arranged above the air disk (3), a partition (6) is arranged above the activated carbon adsorption plate (5), a refrigeration plate (7) is fixedly connected to the bottom of the partition (6), the refrigeration plate (7) is annular, a lower air outlet pipe (8) is fixedly connected to the bottom of the partition (6), a molecular sieve (9) is arranged above the partition (6), and The top of the purification barrel (1) is fixedly connected to a booster pump (10), the bottom of the booster pump (10) is fixedly connected to a ventilation pipe (11), the inner top surface of the purification barrel (1) is fixedly connected to an upper air outlet pipe (12) and an air pressure sensor (17), the top of the purification barrel (1) is fixedly connected to an adsorption barrel (13), the top of the adsorption barrel (13) is fixedly connected to a feed pipe (14) and an exhaust pipe (15), the circumferential surface of the adsorption barrel (13) is fixedly connected to a discharge pipe (16), and the circumferential surface of the purification barrel (1) is fixedly connected to an upper liquid discharge pipe (18) and a lower liquid discharge pipe (19).

2. A high-concentration organic solvent purification and recovery device as claimed in claim 1, characterized in that: The activated carbon adsorption plate (5), the partition plate (6) and the molecular sieve (9) are all fixedly connected to the inner circumferential surface of the purification barrel (1).

3. A high-concentration organic solvent purification and recovery device as claimed in claim 1, characterized in that: The lower liquid discharge pipe (19) is located between the gas disk (3) and the activated carbon adsorption plate (5), the upper liquid discharge pipe (18) is located between the partition (6) and the molecular sieve (9), and the lower liquid discharge pipe (19) and the air inlet pipe (2) are arranged on both sides of the purification barrel (1) opposite to each other.

4. A high-concentration organic solvent purification and recovery device as claimed in claim 1, characterized in that: The number of the nozzles (4) is plural and they are evenly distributed on the gas disk (3).

5. A high-concentration organic solvent purification and recovery device as claimed in claim 1, characterized in that: The bottom of the ventilation pipe (11) is located inside the purification barrel (1), and the air pressure sensor (17) is located on the left and right sides of the upper air outlet pipe (12) respectively.

6. A high-concentration organic solvent purification and recovery device as claimed in claim 1, characterized in that: The upper air outlet pipe (12) is connected to the adsorption barrel (13) in vertical communication.

7. A high-concentration organic solvent purification and recovery device as claimed in claim 1, characterized in that: The adsorption barrel (13) is filled with a chemical adsorbent.

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