Mixing equipment for oxidizing agent production for removing VOCs (Volatile Organic Compounds)

Abstract

The utility model discloses mixing equipment for production of an oxidizing agent for removing VOCs (volatile organic compounds). The mixing equipment comprises an ozone generator, a storage bin, and a filter, an electrostatic plasma box, a boiling adsorption oxidation tower, a dust remover and an ozone destructor which are sequentially communicated through a pipeline, the electrostatic plasma box can be used for producing a strong oxidant and is used for carrying out oxidative cracking on organic molecules in the waste gas; the ozone generator can feed ozone to a gas inlet of the boiling adsorption oxidation tower; the ozone destructor can decompose ozone in the pipeline; adsorption powder is stored in the storage bin. According to the VOCs waste gas treatment device disclosed by the utility model, the VOCs waste gas is subjected to primary purification treatment by utilizing a strong oxidant produced by the electrostatic plasma box, and then is subjected to secondary oxidation purification treatment in the boiling adsorption oxidation tower through ozone and adsorption powder, so that the VOCs waste gas is subjected to efficient treatment and multiple oxidation purification treatment, and the treatment effect is improved; the production cost of enterprises can be greatly saved, the utilization efficiency of resources is improved, and the purposes of energy conservation and emission reduction are effectively achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of VOCs waste gas treatment, in particular to a mixing device for removing VOCs oxidant production. Background Art

[0002] Long-term living in an environment polluted by volatile organic compounds can cause chronic poisoning, damage the liver and nervous system, cause general weakness, skin itching and other symptoms. Some may also cause endocrine disorders and affect sexual function; benzene and xylene can also damage the system and even cause leukemia. Many provinces and cities in China have launched the "Clean Air Action", so it is urgent to find a practical and economical technology to control VOCs and odors emitted by industries.

[0003] Most of the treatment equipment currently available on the market only uses a single treatment technology, and the simultaneous treatment effect on VOCs pollutants and odors is not ideal. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a mixing device for producing an oxidant for removing VOCs.

[0005] The technical solution adopted by an embodiment of the utility model to solve the technical problem is: a mixing device for producing VOCs removal oxidants, comprising: an ozone generator, a storage bin and a filter, an electrostatic plasma box, a boiling adsorption oxidation tower, a dust collector and an ozone destroyer which are sequentially connected through pipelines;

[0006] The electrostatic plasma box can produce strong oxidants for oxidative cracking of organic molecules in exhaust gas; the ozone generator can feed ozone into the air inlet of the boiling adsorption oxidation tower; the ozone destroyer can decompose the ozone in the pipeline; adsorption powder is stored in the storage bin, and the storage bin feeds adsorption powder into the air inlet of the boiling adsorption oxidation tower through a first conveying pipeline; the boiling adsorption oxidation tower is provided with a first reflux pipeline, and the dust collector is provided with a second reflux pipeline; the first reflux pipeline and the second reflux pipeline can return the adsorption powder to the storage bin.

[0007] Optionally, the bottom of the boiling adsorption oxidation tower is funnel-shaped, and the first reflux pipe is arranged below the boiling adsorption oxidation tower; the bottom of the dust collector is funnel-shaped, and the second reflux pipe is arranged below the dust collector.

[0008] Optionally, the boiling adsorption oxidation tower is provided with a cyclone plate separation zone at the top, a boiling oxidation chamber in the middle, and an oxidation tower ash hopper at the bottom; a spiral guide mechanism is provided in the boiling oxidation chamber;

[0009] The spiral flow guiding mechanism includes a driving assembly, a driving rotating shaft, and a propeller blade mounted on the driving rotating shaft; the driving assembly can rotate the driving rotating shaft to form a spiral air flow for the rising waste gas.

[0010] Optionally, a plurality of liquid leakage holes are formed in the propeller blade, and the liquid leakage holes are evenly distributed on the propeller blade.

[0011] Optionally, two layers of cyclone separation plates are arranged at intervals in the cyclone separation area.

[0012] Optionally, the filter material of the filter is a felt filter element and / or a cloth bag.

[0013] Optionally, the filter material of the dust collector is one or a combination of a sintered plastic plate, a cloth bag, or a filter cartridge.

[0014] Optionally, an ultraviolet lamp tube is arranged in the ozone destroyer.

[0015] Optionally, the electrostatic plasma box includes an anode and a cathode that are oppositely arranged to form an electrostatic plasma electric field, the anode is grounded, and the cathode is connected to a high-voltage DC pulse power supply.

[0016] The beneficial effects of the present utility model: The electrostatic plasma box includes an anode and a cathode that are oppositely arranged to form an electrostatic plasma electric field, which can generate strong oxidants for oxidatively cracking organic molecules in the VOCs waste gas and decompose the organic molecules into carbon dioxide and water; then, the adsorption powder and ozone oxidant are sent to the air inlet of the boiling adsorption oxidation tower to be mixed with the VOCs waste gas, and then sent into the boiling adsorption oxidation tower for synchronous treatment; and the boiling adsorption oxidation tower and the dust collector are provided with a reflux pipeline to recycle the adsorption powder for multiple uses. The present utility model uses the strong oxidants generated by the electrostatic plasma box to perform a primary purification treatment on the VOCs waste gas, and then performs a secondary oxidation purification treatment through ozone and adsorption powder in the boiling adsorption oxidation tower, so as to perform an efficient treatment on the VOCs waste gas. The multiple oxidation purification treatments improve the treatment effect; it can greatly save the production cost of enterprises, improve the utilization efficiency of resources, and effectively achieve the goal of energy conservation and emission reduction.

[0017] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0019] Figure 1 is a schematic structural diagram of the mixing equipment for producing VOCs oxidants of the present utility model.

[0020] Description of main component symbols:

[0021] 10. Ozone generator; 20. Storage bin; 21. First conveying pipeline; 22. First reflux pipeline; 23. Second reflux pipeline; 30. Filter; 40. Electrostatic plasma box; 50. Boiling adsorption oxidation tower; 51. Cyclone plate separation area; 511. Cyclone separation plate; 52. Boiling oxidation cavity; 53. Ash hopper of oxidation tower; 54. Spiral guide mechanism; 541. Driving component; 542. Driving rotating shaft; 543. Propeller blade; 60. Dust collector; 70. Ozone destroyer. Specific embodiments

[0022] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.

[0023] In the description of the present invention, the meaning of "a plurality of" is two or more. Understandings such as "greater than", "less than", and "exceeding" do not include the present number, and understandings such as "above", "below", and "within" include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0024] In the description of the present invention, it should be understood that regarding the orientation description, such as the orientation or positional relationship indicated by "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly defined, words such as "set", "installed", and "connected" should be understood in a broad sense. For example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected, detachably connected, or integrally formed; they can be mechanically connected; they can be the communication inside two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0026] Embodiment

[0027] Refer to Figure 1, a mixing device for producing VOCs oxidants proposed by the present utility model includes: an ozone generator 10, a storage bin 20, and a filter 30, an electrostatic plasma box 40, a boiling adsorption oxidation tower 50, a dust collector 60, and an ozone destructor 70 that are sequentially connected through pipelines;

[0028] The electrostatic plasma box 40 can generate strong oxidants for oxidatively cracking organic molecules in the waste gas; the ozone generator 10 can send ozone to the air inlet of the boiling adsorption oxidation tower 50; the ozone destructor 70 can decompose ozone in the pipeline; the storage bin 20 stores adsorption powder, and the storage bin 20 sends the adsorption powder to the air inlet of the boiling adsorption oxidation tower 50 through a first conveying pipeline 21; the boiling adsorption oxidation tower 50 is provided with a first reflux pipeline 22, and the dust collector 60 is provided with a second reflux pipeline 23; the first reflux pipeline 22 and the second reflux pipeline 23 can return the adsorption powder to the storage bin 20.

[0029] In the present utility model, the electrostatic plasma box 40 includes an anode and a cathode that are oppositely arranged to form an electrostatic plasma electric field, which can generate strong oxidants for oxidatively cracking organic molecules in the VOCs waste gas and can decompose the organic molecules into carbon dioxide and water; then, the adsorption powder and ozone oxidant are sent to the air inlet of the boiling adsorption oxidation tower 50 to be mixed with the VOCs waste gas, and then sent into the boiling adsorption oxidation tower 50 for synchronous treatment; and the boiling adsorption oxidation tower 50 and the dust collector 60 are provided with reflux pipelines to recycle the adsorption powder for multiple uses. In the present utility model, the strong oxidants generated by the electrostatic plasma box 40 are used to purify the VOCs waste gas once, and then secondary oxidative purification treatment is carried out through ozone and adsorption powder in the boiling adsorption oxidation tower 50 to efficiently treat the VOCs waste gas. The multiple oxidative purification treatments improve the treatment effect; it can greatly save the production cost of enterprises, improve the utilization efficiency of resources, and effectively achieve the goal of energy conservation and emission reduction.

[0030] In this embodiment, in order to facilitate the recovery of the adsorption powder, the lower part of the boiling adsorption oxidation tower 50 is funnel-shaped, and the first reflux pipeline 22 is arranged below the boiling adsorption oxidation tower 50; the lower part of the dust collector 60 is funnel-shaped, and the second reflux pipeline 23 is arranged below the dust collector 60.

[0031] Specifically, screw conveyors are arranged on the first conveying pipeline 21, the first reflux pipeline 22, and the second reflux pipeline 23.

[0032] The purification function of the boiling adsorption oxidation tower 50 is a composite process, which adopts dual treatment of powder adsorption and oxidant oxidation. The airflow of the waste gas can be directly used to blow the adsorption powder into the device, so that the malodorous substances are adsorbed and intercepted by the powder. The adsorption powder can be activated carbon powder, attapulgite powder or zeolite powder with a particle size of 200-300 mesh. While the powder is adsorbed in the device, an oxidant is introduced. By using the oxidizing property of the oxidant, the VOCs and the VOCs adsorbed by the powder are oxidized. The adsorption and oxidation are carried out simultaneously to improve the treatment effect.

[0033] In this embodiment, a cyclone plate separation area 51 is provided at the top of the boiling adsorption oxidation tower 50, a boiling oxidation chamber 52 is in the middle, and an oxidation tower ash hopper 53 is provided at the bottom; a spiral guide mechanism 54 is arranged in the boiling oxidation chamber 52;

[0034] The spiral guide mechanism 54 includes a driving assembly 541, a driving rotating shaft 542 and a propeller blade 543 installed on the driving rotating shaft 542; the driving assembly 541 can rotate the driving rotating shaft 542 to form a spiral airflow for the rising waste gas.

[0035] The spiral airflow can enhance the intensity of the mixing action of the adsorption powder, ozone oxidant and VOCs.

[0036] Furthermore, a number of liquid leakage holes are provided in the propeller blade 543, and the liquid leakage holes are evenly distributed on the propeller blade 543. These liquid leakage holes can facilitate the falling of the adsorption powder to the lower ash hopper of the tower for recycling.

[0037] In this embodiment, two layers of cyclone separation plates 511 are arranged at intervals in the cyclone plate separation area 51. In order to reduce the working load of the dust collector 60, a cyclone plate separation area 51 is provided at the top of the boiling adsorption oxidation tower 50, and at least one cyclone plate is arranged in the cyclone plate separation area 51. Most of the dust can be intercepted by the cyclone plate, and the waste gas containing a small amount of dust with a smaller particle size then enters the subsequent dust collector 60 for secondary dust removal. The cyclone plate adopts the cyclone plate structure of the existing technology.

[0038] In this embodiment, the filter medium of the filter 30 is a felt filter element and / or a cloth bag.

[0039] In this embodiment, the filter medium of the dust collector 60 is one or a combination of a sintered plastic plate, a cloth bag or a filter cartridge. Preferably, the filter medium of the dust collector 60 is a sintered plastic plate.

[0040] In this embodiment, an ultraviolet lamp tube is arranged in the ozone destructor 70. The ultraviolet lamp tube can emit ultraviolet rays with a wavelength of 254 nm for decomposing ozone.

[0041] In this embodiment, the electrostatic plasma box 40 includes an anode and a cathode that are oppositely arranged to form an electrostatic plasma electric field. The anode is grounded, and the cathode is connected to a high-voltage DC pulse power supply.

[0042] The function of the electrostatic plasma box 40 is the pretreatment of delayed oxidation. It is necessary to ensure that the implementation concentration of the strong oxidant generated by the electrostatic plasma electric field is higher than the concentration of the organic waste gas passing through the electrostatic plasma electric field, that is, inside the electrostatic plasma electric field: the real-time concentration of the strong oxidant > the real-time concentration of the organic waste gas. During actual application, it is necessary to adjust the inverted pulse DC voltage of the high-voltage DC pulse electrostatic power supply to ensure that the inverted pulse DC voltage is stably maintained within the range of 10,000 v to 12,000 v to provide sufficient strong oxidant.

[0043] Certainly, the present utility model is not limited to the above embodiments. Those skilled in the art can make equivalent deformations or replacements without departing from the spirit of the present utility model, and these equivalent deformations and replacements are all included within the scope defined by the claims of this application.

Claims

1. A mixing device for producing VOCs removal oxidants, characterized in that: include: An ozone generator (10), a storage bin (20), a filter (30), an electrostatic plasma box (40), a boiling adsorption oxidation tower (50), a dust collector (60), and an ozone destroyer (70) which are sequentially connected through pipelines; The electrostatic plasma box (40) is capable of producing a strong oxidant for oxidative cracking of organic molecules in the exhaust gas; the ozone generator (10) can feed ozone to the air inlet of the boiling adsorption oxidation tower (50); the ozone destroyer (70) can decompose the ozone in the pipeline; the storage bin (20) stores adsorption powder, and the storage bin (20) feeds adsorption powder to the air inlet of the boiling adsorption oxidation tower (50) through a first conveying pipeline (21); the boiling adsorption oxidation tower (50) is provided with a first reflux pipeline (22), and the dust collector (60) is provided with a second reflux pipeline (23); the first reflux pipeline (22) and the second reflux pipeline (23) can return the adsorption powder to the storage bin (20).

2. The mixing equipment for producing VOCs removal oxidants according to claim 1, characterized in that: The bottom of the boiling adsorption oxidation tower (50) is funnel-shaped, and the first reflux pipe (22) is arranged below the boiling adsorption oxidation tower (50); the bottom of the dust collector (60) is funnel-shaped, and the second reflux pipe (23) is arranged below the dust collector (60).

3. The mixing equipment for producing VOCs removal oxidants according to claim 1, characterized in that: The boiling adsorption oxidation tower (50) is provided with a cyclone plate separation zone (51) at the top, a boiling oxidation chamber (52) in the middle, and an oxidation tower ash hopper (53) at the bottom; a spiral flow guide mechanism (54) is provided in the boiling oxidation chamber (52); The spiral flow guide mechanism (54) comprises a driving component (541), a driving shaft (542), and a propeller blade (543) mounted on the driving shaft (542); the driving component (541) can rotate the driving shaft (542) so that the rising exhaust gas forms a spiral airflow.

4. The mixing equipment for producing VOCs removal oxidants according to claim 3, characterized in that: The propeller blade (543) is provided with a plurality of liquid leakage holes, and the liquid leakage holes are evenly distributed on the propeller blade (543).

5. The mixing equipment for producing VOCs removal oxidants according to claim 3, characterized in that: The cyclone plate separation zone (51) is provided with two layers of cyclone separation plates (511) at intervals.

6. The mixing equipment for producing VOCs removal oxidants according to claim 1, characterized in that: The filter material of the filter (30) is a felt filter element and / or a cloth bag.

7. The mixing equipment for producing VOCs removal oxidants according to claim 1, characterized in that: The filter material of the dust collector (60) is a combination of one or more of a sintered plastic plate, a cloth bag or a filter cartridge.

8. The mixing equipment for producing VOCs removal oxidants according to claim 1, characterized in that: An ultraviolet lamp is arranged inside the ozone destroyer (70).

9. The mixing equipment for producing VOCs removal oxidants according to claim 1, characterized in that: The electrostatic plasma box (40) comprises an anode and a cathode which are arranged opposite to each other to form an electrostatic plasma electric field, the anode is grounded, and the cathode is connected to a high-voltage DC pulse power supply.

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