A VOCs treatment equipment

Abstract

The present application discloses a VOCs treatment equipment, which relates to the technical field of green environmental protection, including a packing tower and a reaction box, the packing tower and the reaction box are connected by a connecting pipe, the packing tower is connected to an air inlet pipe, the reaction box is connected to an air outlet pipe, the packing tower is connected to a water inlet pipe, the water inlet pipe is located between the air outlet of the air inlet pipe and the air inlet of the connecting pipe, the water inlet pipe is connected to a plurality of water spray pipes, an ion generator and an activated carbon net are connected in the reaction box, and the activated carbon net is located between the ion generator and the air outlet pipe. In the present application, the waste gas enters the packing tower through the air inlet pipe, water enters the water inlet pipe and is sprayed out from the water spray pipe, the waste gas rises and moves toward the air inlet of the connecting pipe, the waste gas contacts the falling water, and the dust and other pollutants in the waste gas are captured and removed by the water, thereby reducing the dust and other pollutants from entering the connecting pipe, that is, improving the reaction effect of the waste gas and the ions.

Description

Technical Field

[0001] The present application relates to the technical field of green environmental protection, and in particular to a VOCs treatment equipment. Background Art

[0002] The pharmaceutical industry is a chemical industry that integrates multiple chemical components and chemical processing. A large amount of solvents are used in the production process, and the characteristic is the use of low-boiling-point, high-volatile organic solvents. VOCs not only affect human health, but also cause damage to the environment. For example, VOCs can react photochemically with NOx in the atmosphere under ultraviolet light to produce secondary pollutants such as O3. At the same time, VOCs can react with particulate matter in the atmosphere to form secondary organic aerosols, which seriously endanger the health and development of the human body and the environment.

[0003] At present, most VOCs waste gas treatment devices pass the waste gas through an ion generator, which produces a large number of ions. The ions collide with oxygen molecules in the air to form positive and negative oxygen ions, which change the energy state of the waste gas molecules, that is, the rotation, vibration or electronic energy level of the molecules changes, and they are excited from a low energy state to a high energy state. And after contacting with VOC molecules, the chemical bonds of organic volatile gases are opened, and after a series of complex chemical reactions, stable small molecules are generated. There are also some unreacted smaller molecular organic wastes, which are treated by activated carbon adsorption. Under the action of van der Waals force, organic matter is adsorbed into the pores of activated carbon. There are a large number of dust particles in VOCs waste gas. The existing device does not pre-treat this part of the dust particles, which will affect the reaction effect of ions and waste gas, and needs to be improved. Utility Model Content

[0004] The purpose of this application is to provide a VOCs treatment equipment to improve the reaction effect between exhaust gas and ions.

[0005] The VOCs treatment equipment provided in this application adopts the following technical solution:

[0006] It includes a packing tower and a reaction box, the packing tower and the reaction box are connected by a connecting pipe, the packing tower is connected to an air inlet pipe, the reaction box is connected to an air outlet pipe, the packing tower is connected to a water inlet pipe, the water inlet pipe is located between the air outlet of the air inlet pipe and the air inlet of the connecting pipe, the water inlet pipe is connected to a plurality of water spray pipes, an ion generator and an activated carbon net are connected in the reaction box, and the activated carbon net is located between the ion generator and the air outlet pipe.

[0007] By adopting the above technical solution, the exhaust gas enters the packed tower through the air inlet pipe, the water enters the water inlet pipe and is sprayed out from the water spray pipe, the exhaust gas rises and moves toward the air inlet near the connecting pipe, the exhaust gas contacts the falling water, and the dust and other pollutants in the exhaust gas are captured and removed by the water, thereby reducing the dust and other pollutants entering the connecting pipe, that is, improving the reaction effect of the exhaust gas and ions.

[0008] Optionally, there are multiple water inlet pipes, and the multiple water inlet pipes are distributed in sequence along the height direction of the packed tower.

[0009] By adopting the above technical solution, water is sprayed out from the water spray pipes of several water inlet pipes, which increases the contact area between the exhaust gas and the water, improves the effect of water in removing dust from the exhaust gas, and thus reduces the entry of pollutants such as dust into the connecting pipe.

[0010] Optionally, a wire mesh demister is connected to the packing tower, and the wire mesh demister is located between the water inlet pipe and the air inlet of the connecting pipe.

[0011] By adopting the above technical solution, the wire mesh demister uses the porosity and filtering properties of the wire mesh to intercept the droplets (fog) and particles entrained in the exhaust gas on the wire mesh. These droplets and particles may be generated by chemical reactions, evaporation or other industrial processes. Through the treatment of the wire mesh demister, these pollutants can be effectively separated from the exhaust gas, thereby reducing the entry of pollutants such as dust into the connecting pipe.

[0012] Optionally, the connecting pipe is connected to a surface cooler.

[0013] By adopting the above technical solution, the surface cooler can reduce the temperature of the exhaust gas entering the reaction box. The adsorption efficiency of activated carbon is affected by temperature. Generally speaking, at lower temperatures, the adsorption capacity of activated carbon for organic matter will be enhanced. Therefore, by lowering the gas temperature through the surface cooler, the adsorption efficiency of activated carbon can be improved. While cooling, the surface cooler can also reduce the moisture content in the exhaust gas, that is, dehumidification treatment. The reduction in humidity helps to reduce competitive adsorption during the activated carbon adsorption process, because moisture and organic matter may compete for adsorption sites on the surface of activated carbon. By reducing humidity, the adsorption amount of organic matter by activated carbon can be increased.

[0014] Optionally, the reaction box is provided with a cavity, and a partition is connected to the reaction box for separating the cavity into a reaction chamber and an adsorption chamber, the connecting pipe is connected to the reaction chamber, the adsorption chamber is connected to the outlet pipe, the partition is connected to a conducting pipe, the ion generator is connected in the reaction chamber, the activated carbon net is connected in the adsorption chamber, the ion generator is located between the outlet of the connecting pipe and the inlet of the conducting pipe, and the activated carbon net is located between the outlet of the conducting pipe and the inlet of the outlet pipe.

[0015] By adopting the above technical solution, the exhaust gas reacts with the ions generated by the ion generator and then enters the adsorption chamber through the conducting pipe, thereby reducing the situation where the exhaust gas directly enters the adsorption chamber without reacting with the ions, and improving the reaction effect of the exhaust gas and the ions.

[0016] Optionally, a plurality of diverter plates are connected to the inner wall of the reaction chamber, and the plurality of diverter plates are located between the gas outlet of the connecting pipe and the ion generator, and the distance between two adjacent diverter plates increases step by step toward the direction approaching the ion generator.

[0017] By adopting the above technical solution, a plurality of diverter plates disperse the flow of the exhaust gas, so that the exhaust gas is dispersed in the reaction chamber, increasing the contact area between the exhaust gas and the ions, thereby improving the reaction effect of the exhaust gas and the ions.

[0018] Optionally, a water outlet pipe communicating with the reaction chamber is connected to the bottom of the reaction box, and the conducting pipe is located between the ion generator and a water inlet of the water outlet pipe.

[0019] By adopting the above technical solution, the waste gas reacts with ions to produce water, which flows out from the water outlet pipe, thereby reducing the accumulation of water in the reaction chamber.

[0020] Optionally, there are two activated carbon nets, and one end of the two activated carbon nets close to the conducting pipe is connected to the inner wall of the adsorption chamber through a first guide plate, and one end of the two activated carbon nets close to the outlet pipe is connected through a blocking plate.

[0021] By adopting the above technical solution, the first guide plate guides the gas to pass through between the two activated carbon nets, and the blocking plate blocks the movement of the gas, so that the gas can be discharged from the outlet pipe only after passing through the activated carbon net. The gas is in full contact with the activated carbon net, thereby improving the adsorption effect of the activated carbon net.

[0022] Optionally, there are four activated carbon nets, and the two middle activated carbon nets are connected to the inner wall of the adsorption chamber at one end close to the conduction pipe through the second guide plate, and the two activated carbon nets farthest apart are connected to the inner wall of the adsorption chamber at one end close to the conduction pipe through the first guide plate, and the two activated carbon nets farthest apart are connected to the adjacent activated carbon nets at one end close to the outlet pipe through the blocking plate.

[0023] By adopting the above technical solution, the gas can contact multiple activated carbon nets, thereby improving the adsorption effect of the activated carbon nets.

[0024] Optionally, an exhaust pipe is also included, wherein the exhaust pipe is connected to the air outlet pipe via an exhaust pipe, and the exhaust pipe is connected to an exhaust fan.

[0025] By adopting the above technical solution, the exhaust fan extracts the gas in the reaction box, thereby increasing the circulation speed of the waste gas in the packing tower, the connecting pipe and the reaction box, that is, improving the efficiency of waste gas treatment.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The exhaust gas enters the packed tower through the air inlet pipe, water enters the water inlet pipe and is sprayed out from the water spray pipe. The exhaust gas rises and moves toward the air inlet near the connecting pipe. The exhaust gas contacts the falling water, and the dust and other pollutants in the exhaust gas are captured and removed by the water, thereby reducing the dust and other pollutants entering the connecting pipe, that is, improving the reaction effect of the exhaust gas and ions.

[0028] 2. The surface cooler can reduce the temperature of the exhaust gas entering the reaction box. The adsorption efficiency of activated carbon is affected by temperature. Generally speaking, at lower temperatures, the adsorption capacity of activated carbon for organic matter will be enhanced. Therefore, lowering the gas temperature through the surface cooler can improve the adsorption efficiency of activated carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 yes Figure 1 A magnified image of area A.

[0031] Figure 3 It is a cross-sectional view of the reaction box.

[0032] Figure 4 yes Figure 3 Magnified view of area B.

[0033] Explanation of the reference numerals: 1. Packing tower; 11. Spray chamber; 12. Air inlet pipe; 13. Water inlet pipe; 14. Water spray pipe; 15. Wire mesh demister; 2. Reaction box; 21. Cavity; 211. Reaction chamber; 212. Adsorption chamber; 22. Partition; 23. Conducting pipe; 24. Ion generator; 25. Water outlet pipe; 26. Diverter plate; 27. Air outlet pipe; 28. Activated carbon net; 281. First guide plate; 282. Baffle plate; 283. Second guide plate; 3. Exhaust pipe; 4. Connecting pipe; 41. Surface cooler; 5. Exhaust pipe; 51. Exhaust fan. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.

[0035] The embodiment of the present application discloses a VOCs treatment equipment.

[0036] like Figure 1As shown, it includes a packing tower 1, a reaction box 2 and an exhaust pipe 3, the reaction box 2 is located between the packing tower 1 and the exhaust pipe 3, a spray chamber 11 is opened in the packing tower 1, the side wall of the packing tower 1 is fixedly connected with an air inlet pipe 12 connected with the spray chamber 11, the top of the packing tower 1 is fixedly connected with a connecting pipe 4 connected with the spray chamber 11, the air inlet of the connecting pipe 4 is higher than the air outlet of the air inlet pipe 12, the end of the connecting pipe 4 away from the packing tower 1 is fixedly connected to the top of the reaction box 2, and the connecting pipe 4 is fixedly connected with a surface cooler 41.

[0037] Combination Figure 1 and Figure 2 As shown, the packing tower 1 is fixedly connected with a plurality of water inlet pipes 13 (the number of water inlet pipes 13 is selected according to actual needs). Taking this embodiment as an example, the number of water inlet pipes 13 is three, and the three water inlet pipes 13 are located between the air inlet of the connecting pipe 4 and the air outlet of the air inlet pipe 12. Two of the water inlet pipes 13 are relatively fixedly connected to the packing tower 1, and the two air inlet pipes 12 are located between another water inlet pipe 13. A plurality of water spray pipes 14 are fixedly connected to one end of each water inlet pipe 13 away from the air inlet of the connecting pipe 4. The water spray pipes 14 on the two water inlet pipes 13 are staggered with the water spray pipes 14 of another water inlet pipe 13 in order to increase the contact area between water and exhaust gas, thereby improving the effect of removing dust impurities. A wire mesh demister 15 is fixedly connected inside the packing tower 1, and the wire mesh demister 15 is located between the water inlet pipe 13 and the air inlet of the connecting pipe 4.

[0038] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the reaction box 2 is provided with a cavity 21, and the reaction box 2 is fixedly connected with a partition 22 for separating the cavity 21 into a reaction chamber 211 and an adsorption chamber 212. The partition 22 is arranged vertically, and the partition 22 is fixedly connected with a conducting pipe 23 for connecting the reaction chamber 211 and the adsorption chamber 212. The connecting pipe 4 is connected with the reaction chamber 211, and the inner wall of the reaction chamber 211 is fixedly connected with an ion generator 24, and the ion generator 24 is located between the air outlet of the connecting pipe 4 and the air inlet of the conducting pipe 23. Three water outlet pipes 25 connected with the reaction chamber 211 are relatively fixedly connected at the bottom of the reaction box 2, and the air inlet of the conducting pipe 23 is located between the ion generator 24 and the water outlet pipe 25. A plurality of diverter plates 26 are fixedly connected to the inner wall of the reaction chamber 211 (the number of the diverter plates 26 is selected according to actual needs), and the plurality of diverter plates 26 are located between the gas outlet of the connecting tube 4 and the ion generator 24. Taking the present embodiment as an example, the number of the diverter plates 26 is four, and each two diverter plates 26 form a group. The inclination direction of each group of diverter plates 26 is different from the inclination direction of another group of diverter plates 26, and the distance between two adjacent diverter plates 26 increases step by step towards the ion generator 24.

[0039] Combination Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, one side of the reaction box 2 is fixedly connected with an outlet pipe 27 communicating with the adsorption chamber 212, and four activated carbon nets 28 are relatively fixedly connected in the adsorption chamber 212 (the number of activated carbon nets 28 is selected according to actual needs), and the four activated carbon nets 28 are located between the conduction pipe 23 and the air inlet of the outlet pipe 27. The two activated carbon nets 28 located in the middle are fixedly connected at one end close to the conduction pipe 23 through the second guide plate 283, and the two activated carbon nets 28 farthest apart are fixedly connected at one end close to the conduction pipe 23 and the inner wall of the adsorption chamber 212 through the first guide plate 281, and the two activated carbon nets 28 farthest apart are fixedly connected at one end close to the outlet pipe 27 and the adjacent activated carbon nets 28 through the blocking plate 282. The exhaust pipe 3 is connected to the outlet pipe 27 through the exhaust pipe 5, one end of the exhaust pipe 5 is fixedly connected to one side of the exhaust pipe 3, and the other end is fixedly connected to the water outlet pipe 25, and the exhaust pipe 5 is fixedly connected with an exhaust fan 51.

[0040] The implementation principle of a VOCs treatment equipment in the embodiment of the present application is:

[0041] The waste gas enters the spray chamber 11, and water is sprayed out from a plurality of spray pipes 14. The waste gas contacts the falling water, and pollutants such as dust in the waste gas are captured and removed by the water, thereby reducing the dust and other pollutants entering the connecting pipe 4, that is, improving the reaction effect between the waste gas and the ions.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A VOCs treatment equipment, characterized by: The invention comprises a packing tower (1) and a reaction box (2), wherein the packing tower (1) and the reaction box (2) are connected via a connecting pipe (4), the packing tower (1) is connected to an air inlet pipe (12), the reaction box (2) is connected to an air outlet pipe (27), the packing tower (1) is connected to a water inlet pipe (13), the water inlet pipe (13) is located between the air outlet of the air inlet pipe (12) and the air inlet of the connecting pipe (4), the water inlet pipe (13) is connected to a plurality of water spray pipes (14), and an ion generator (24) and an activated carbon net (28) are connected inside the reaction box (2), the activated carbon net (28) is located between the ion generator (24) and the air outlet pipe (27).

2. The VOCs treatment equipment according to claim 1, characterized in that: There are a plurality of water inlet pipes (13), and the plurality of water inlet pipes (13) are distributed in sequence along the height direction of the packed tower (1).

3. The VOCs treatment equipment according to claim 1, characterized in that: A wire mesh demister (15) is connected to the packed tower (1), and the wire mesh demister (15) is located between the water inlet pipe (13) and the air inlet of the connecting pipe (4).

4. The VOCs treatment equipment according to claim 1, characterized in that: The connecting pipe (4) is connected to a surface cooler (41).

5. The VOCs treatment equipment according to claim 1, characterized in that: The reaction box (2) is provided with a cavity (21); a partition (22) is connected inside the reaction box (2) for dividing the cavity (21) into a reaction cavity (211) and an adsorption cavity (212); the connecting pipe (4) is in communication with the reaction cavity (211); the adsorption cavity (212) is in communication with the gas outlet pipe (27); the partition (22) is connected with a conducting pipe (23); the ion generator (24) is connected inside the reaction cavity (211); the activated carbon net (28) is connected inside the adsorption cavity (212); the ion generator (24) is located between the gas outlet of the connecting pipe (4) and the gas inlet of the conducting pipe (23); and the activated carbon net (28) is located between the gas outlet of the conducting pipe (23) and the gas inlet of the gas outlet pipe (27).

6. The VOCs treatment equipment according to claim 5, characterized in that: The inner wall of the reaction chamber (211) is connected to a plurality of flow dividers (26), the plurality of flow dividers (26) being located between the gas outlet of the connecting pipe (4) and the ion generator (24), and the distance between two adjacent flow dividers (26) increasing step by step in a direction approaching the ion generator (24).

7. The VOCs treatment equipment according to claim 5, characterized in that: The bottom of the reaction box (2) is connected to a water outlet pipe (25) communicating with the reaction chamber (211), and the conducting pipe (23) is located between the ion generator (24) and the water inlet of the water outlet pipe (25).

8. The VOCs treatment equipment according to claim 5, characterized in that: There are two activated carbon nets (28), and one end of the two activated carbon nets (28) close to the conducting pipe (23) is connected to the inner wall of the adsorption chamber (212) through a first guide plate (281), and one end of the two activated carbon nets (28) close to the air outlet pipe (27) is connected through a blocking plate (282).

9. The VOCs treatment equipment according to claim 8, characterized in that: There are four activated carbon nets (28), the two activated carbon nets (28) located in the middle are connected at one end close to the conducting pipe (23) through the second guide plate (283), the two activated carbon nets (28) that are farthest apart are connected at one end close to the conducting pipe (23) to the inner wall of the adsorption chamber (212) through the first guide plate (281), and the two activated carbon nets (28) that are farthest apart are connected at one end close to the outlet pipe (27) to the adjacent activated carbon net (28) through the blocking plate (282).

10. The VOCs treatment equipment according to claim 1, characterized in that: It also comprises an exhaust pipe (3), wherein the exhaust pipe (3) is connected to the air outlet pipe (27) via an exhaust pipe (5), and the exhaust pipe (5) is connected to an exhaust fan (51).

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