High-concentration mixed type waste gas treatment device with recovery function

Abstract

The utility model discloses a high-concentration mixed type waste gas treatment device with a recovery function, which comprises an alkaline washing tower, an outlet of the alkaline washing tower is connected with an inlet of a water washing tower, an outlet of the water washing tower is sequentially connected with a humidifying surface air cooler, a filter and a primary fan, and an outlet of the primary fan is respectively connected with an adsorber I, an adsorber II and an adsorber III through a first pipeline. The first adsorber, the second adsorber and the third adsorber are sequentially connected with the first-stage condenser, the second-stage condenser and the layering tank through a first pipeline, the first adsorber, the second adsorber and the third adsorber are sequentially connected with the first-stage condenser, the second-stage condenser and the layering tank through a second pipeline, and the first adsorber, the second adsorber and the third adsorber are connected with the steam device through a third pipeline. According to the waste gas treatment device, multiple purification of multiple waste gas components is achieved, recovery of high-concentration waste gas components is achieved by arranging the steam device, the first-stage condenser, the second-stage condenser and the layering groove, the whole device reduces the waste gas treatment operation and maintenance cost, and emission of carbon dioxide is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a high-concentration mixed waste gas treatment device with a recovery function. Background Art

[0002] At present, the industrial waste gas treatment processes widely used in the market are mainly divided into single treatment processes and composite treatment processes. Single treatment processes include adsorption, low-temperature plasma, photocatalytic oxidation, water spray, combustion, etc. Composite treatment processes are mostly combinations of single treatment processes. Single treatment processes have disadvantages such as low purification efficiency, frequent replacement of consumables, and high operation and maintenance costs. Although the composite treatment process has the advantages of high waste gas treatment efficiency and low operation and maintenance costs, the final decomposition of waste gas into carbon dioxide and water and discharge into the atmosphere is a commonly used technical route in the composite treatment process, and excessive carbon dioxide emissions will have an adverse impact on the environment and climate. Utility Model Content

[0003] The purpose of the utility model is to provide a high-concentration mixed exhaust gas treatment device with a recovery function to make up for the shortcomings of the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-concentration mixed waste gas treatment device with a recovery function, comprising an alkali washing tower, the outlet of the alkali washing tower is connected to the inlet of the water washing tower, the outlet of the water washing tower is connected in sequence to a humidifying surface cooler, a filter and a primary fan, the outlet of the primary fan is connected to adsorber 1, adsorber 2 and adsorber 3 respectively through a first pipe, the adsorber 1, the adsorber 2 and the adsorber 3 are connected in sequence to a primary condenser, a secondary condenser and a stratification tank through a second pipe, the adsorber 1, the adsorber 2 and the adsorber 3 are connected to a steam device through a third pipe, and the adsorber 1, the adsorber 2 and the adsorber 3 are connected to an exhaust port through a fourth pipe.

[0005] Furthermore, the first pipeline is connected to the adsorber 1, the adsorber 2 and the adsorber 3 and is respectively provided with a three-way valve and a check valve, the second pipeline is connected to the adsorber 1, the adsorber 2 and the adsorber 3 and is respectively provided with a stop valve, the third pipeline is connected to the adsorber 1, the adsorber 2 and the adsorber 3 and is respectively provided with the stop valve, and the fourth pipeline is connected to the adsorber 1, the adsorber 2 and the adsorber 3 and is respectively provided with the three-way valve.

[0006] Furthermore, the outlets of the adsorber 1, the adsorber 2 and the adsorber 3 are respectively connected to the inlets of the adsorber 1, the adsorber 2 and the adsorber 3 via the three-way valve and a fifth pipeline.

[0007] Furthermore, the fifth pipeline is provided with a secondary surface cooler, a fresh air system and a secondary fan.

[0008] The beneficial effects of the utility model are as follows: the utility model realizes multiple purification of various waste gas components by arranging an alkali washing tower, a water washing tower, adsorber 1, adsorber 2 and adsorber 3; and realizes the recovery of high-concentration waste gas components by arranging a steam device, a primary condenser, a secondary condenser and a stratification tank. The whole set of equipment reduces the operation and maintenance cost of waste gas treatment and reduces carbon dioxide emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present utility model.

[0010] In the figure: 1. Alkali washing tower; 2. Water washing tower; 3. Humidity control cooler; 4. Filter; 5. Primary fan; 6. Adsorber 1; 7. Adsorber 2; 8. Adsorber 3; 9. Secondary fan;

[0011] Fresh air system; 11. Steam device; 12. Exhaust port; 13. Secondary surface cooler; 14. Primary condenser; 15. Secondary condenser; 16. Stratification tank; 17. Three-way valve; 18. Check valve; 19. Stop valve; 20. First pipeline; 21. Second pipeline; 22. Third pipeline; 23. Fourth pipeline; 24. Fifth pipeline. DETAILED DESCRIPTION

[0012] 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 are within the scope of protection of the present invention.

[0013] like Figure 1 As shown, in an embodiment of the present invention, a high-concentration mixed exhaust gas treatment device with a recovery function includes an alkali washing tower 1, the outlet of the alkali washing tower 1 is connected to the inlet of the water washing tower 2, the outlet of the water washing tower 2 is connected in sequence to a humidifying surface cooler 3, a filter 4 and a primary fan 5, the outlet of the primary fan 5 is connected to adsorber 1 6, adsorber 2 7 and adsorber 3 8 respectively through a first pipe 20, the adsorber 1 6, the adsorber 2 7 and the adsorber 3 8 are connected in sequence to a primary condenser 14, a secondary condenser 15 and a stratification tank 16 through a second pipe 21, the adsorber 1 6, the adsorber 2 7 and the adsorber 3 8 are connected to a steam device 11 through a third pipe 22, and the adsorber 1 6, the adsorber 2 7 and the adsorber 3 8 are connected to an exhaust port 12 through a fourth pipe 23.

[0014] Furthermore, the first pipeline 20 is connected to the adsorber 1 6, the adsorber 2 7 and the adsorber 3 8, and a three-way valve 17 and a check valve 18 are respectively provided. The second pipeline 21 is connected to the adsorber 1 6, the adsorber 2 7 and the adsorber 3 8, and a stop valve 19 is respectively provided. The third pipeline 22 is connected to the adsorber 1 6, the adsorber 2 7 and the adsorber 3 8, and the stop valve 19 is respectively provided. The fourth pipeline 23 is connected to the adsorber 1 6, the adsorber 2 7 and the adsorber 3 8, and the three-way valve 17 is respectively provided.

[0015] Furthermore, the outlets of the adsorber 1 6 , the adsorber 2 7 and the adsorber 3 8 are respectively connected to the inlets of the adsorber 1 6 , the adsorber 2 7 and the adsorber 3 8 via the three-way valve 17 and the fifth pipeline 24 .

[0016] Furthermore, the fifth pipeline 24 is provided with a secondary surface cooler 13 , a fresh air system 10 and a secondary fan 9 .

[0017] Specifically, when the present invention is used, the primary fan 5 provides power, and the collected high-concentration mixed exhaust gas enters the alkali scrubber 1 and the water scrubber 2 in sequence. The acidic gas components in the exhaust gas react with the alkaline solution in the alkali scrubber 1, and the soluble aqueous gas components in the exhaust gas fuse with water in the alkali scrubber 1 and the water scrubber 2. The exhaust gas pretreated by the alkali scrubber 1 and the water scrubber 2 enters the humidity regulating cooler 3 to achieve the purpose of reducing the humidity of the gas. The exhaust gas after the humidity is adjusted by the humidity regulating cooler 3 enters the filter 4 for purification treatment. The gas purified by the filter 4 enters any one of the adsorber 1 6, the adsorber 2 7, and the adsorber 3 8. After the exhaust gas is adsorbed and purified by any one of the adsorbers 1 6, the adsorber 2 7, and the adsorber 3 8, it is discharged by the secondary fan. The engine 9 provides power, and the exhaust gas enters one of the other two of adsorber 1 6, adsorber 2 7, and adsorber 3 8 through the fifth pipe 24 to complete secondary purification. The exhaust gas after secondary purification is discharged into the atmosphere through the fourth pipe 23 and the exhaust port 12. After any one of adsorber 1 6, adsorber 2 7, and adsorber 3 8 adsorbs for a period of time, the adsorber enters the desorption state, and the steam device 11 generates superheated steam which desorbs the adsorption material in the adsorber through the third pipe 22. The desorbed exhaust gas enters condenser 14 and condenser 2 15 in sequence through the second pipe 21. The condensed condensate enters the stratification tank 16 for stratification. After stratification, the wastewater in the upper layer of the stratification tank 16 is aerated, and the solvent in the lower layer of the stratification tank 16 is recovered and reused. The adsorber after desorption contains a large amount of high-temperature water vapor, which is powered by the secondary fan 9. The high-temperature water vapor in the adsorber after desorption passes through the secondary surface cooler 13 to further reduce the humidity of the gas. The humidified gas enters the adsorber after desorption again and enters the next round of humidity control treatment. The moisture content of the adsorption material in the desorption adsorber is gradually reduced in a cyclic drying manner to restore the adsorption capacity of the adsorption material. After the cyclic drying is completed, the adsorber enters the adsorption state again. The stop valve 19 at the connection between adsorber 1 6, adsorber 2 7, adsorber 3 8 and the second pipe 21 and the third pipe 22 respectively can automatically switch between open and closed states. The three-way valve 17 and the check valve 18 at the connection between adsorber 1 6, adsorber 2 7, adsorber 3 8 and the first pipe 20, the fourth pipe 23, and the fifth pipe 24 respectively can automatically switch between open and closed states to realize the primary purification, secondary purification and desorption and desorption function switching of adsorber 1 6, adsorber 2 7, adsorber 3 8. The fresh air system 10 serves as an air supply system to solve the problem of insufficient air volume during the simultaneous operation of secondary purification of exhaust gas and drying of high-temperature water vapor.

[0018] In summary, the utility model realizes multiple purification of various waste gas components by arranging an alkali washing tower, a water washing tower, adsorber 1, adsorber 2 and adsorber 3. By arranging a steam device, a primary condenser, a secondary condenser and a stratification tank, the recovery of high-concentration waste gas components is realized. The whole set of equipment reduces the waste gas treatment operation and maintenance costs and reduces carbon dioxide emissions.

[0019] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A high-concentration mixed waste gas treatment device with a recovery function, comprising an alkali washing tower (1), characterized in that: The outlet of the alkali washing tower (1) is connected to the inlet of the water washing tower (2), and the outlet of the water washing tower (2) is connected to the humidity control cooler (3), the filter (4) and the first-level fan (5) in sequence. The outlet of the first-level fan (5) is connected to the adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8) respectively through the first pipe (20). The adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8) are connected to the first-level condenser (14), the second-level condenser (15) and the stratification tank (16) in sequence through the second pipe (21). The adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8) are connected to the steam device (11) through the third pipe (22). The adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8) are connected to the exhaust port (12) through the fourth pipe (23).

2. The high-concentration mixed exhaust gas treatment device with a recovery function according to claim 1 is characterized in that: The first pipe (20) is connected to the adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8), and is provided with a three-way valve (17) and a check valve (18) respectively; the second pipe (21) is connected to the adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8), and is provided with a stop valve (19) respectively; the third pipe (22) is connected to the adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8), and is provided with the stop valve (19) respectively; the fourth pipe (23) is connected to the adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8), and is provided with the three-way valve (17) respectively.

3. The high-concentration mixed exhaust gas treatment device with a recovery function according to claim 2, characterized in that: The outlets of the adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8) are connected to the inlets of the adsorber 1 (6), the adsorber 2 (7) and the adsorber 3 (8) respectively through the three-way valve (17) and the fifth pipeline (24).

4. The high-concentration mixed exhaust gas treatment device with a recovery function according to claim 3 is characterized by: The fifth pipeline (24) is provided with a secondary surface cooler (13), a fresh air system (10) and a secondary fan (9).

Images