CN219596284U

CN219596284U - VOC processing apparatus

Info

Publication number: CN219596284U
Application number: CN202321264711.0U
Authority: CN
Inventors: 郜子兴; 赵航程; 张冀青
Original assignee: Shijiazhuang Enn Environmental Protection Technology Co ltd
Current assignee: Shijiazhuang Enn Environmental Protection Technology Co ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-08-29
Anticipated expiration: 2033-05-23

Abstract

The utility model provides a VOC treatment device which comprises a sulfuric acid spray tower, an alkaline washing tower, a sodium hypochlorite oxidation tower, a water washing tower, a fan and a chimney which are sequentially connected. The sulfuric acid spray tower comprises a tower body, a spray mechanism and a liquid supply mechanism, wherein the tower body is provided with a gas treatment cavity, a gas inlet communicated with the lower part of the gas treatment cavity and a gas outlet communicated with the upper part of the gas treatment cavity, and a sulfuric acid liquid accommodating cavity is formed at the bottom of the gas treatment cavity; the spraying mechanism is arranged in the gas treatment cavity and is positioned between the gas inlet and the gas outlet; the liquid supply mechanism comprises a first pump body, a second pump body and a liquid supplementing box, wherein the first pump body is connected between the sulfuric acid liquid containing cavity and the liquid supplementing box, and the second pump body is connected with the liquid supplementing box and the spraying mechanism. According to the utility model, the concentrated sulfuric acid spray tower is arranged at the front end of the whole treatment device, so that substances such as mercaptan and thioether contained in VOC gas can be removed at first, the substances such as sulfuric acid and thioether are prevented from being discharged to the outside, and the problem that VOC treatment discharge does not reach the standard is solved.

Description

VOC processing apparatus

Technical Field

The utility model belongs to the technical field of VOC treatment, and particularly relates to a VOC treatment device.

Background

The sewage generated in industrial production needs to be subjected to purification treatment, and part of volatile organic gases, namely VOC, are also generated in the sewage during the treatment process. VOC gas generated by sewage often accompanies bad smell such as malodor, pungency, etc., and diffuses to workshops and surrounding environments, which can affect workshops workers and surrounding environments.

The VOC treatment mode in the prior art is one or a combination of a plurality of modes of alkali washing, sodium hypochlorite oxidation, water washing and active carbon adsorption. In practical operation, the inventor finds that when the waste gas contains substances such as mercaptan, thioether and the like, the treatment effect on the substances such as mercaptan and thioether contained in the VOC gas is poor in water washing, alkali washing, sodium hypochlorite oxidation and the like, and the problems of incomplete treatment and substandard VOC treatment emission exist.

Disclosure of Invention

The utility model provides a VOC treatment device, which aims to improve the treatment effect on mercaptan and thioether substances in VOC gas and solve the problem that VOC treatment emission does not reach the standard.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the VOC treatment device comprises a sulfuric acid spray tower, an alkaline washing tower, a sodium hypochlorite oxidation tower, a water washing tower, a fan and a chimney which are sequentially connected;

the sulfuric acid spray tower comprises:

the tower body is provided with a gas treatment cavity, a gas inlet communicated with the lower part of the gas treatment cavity and a gas outlet communicated with the upper part of the gas treatment cavity, and the bottom of the gas treatment cavity forms a sulfuric acid liquid containing cavity;

the spraying mechanism is arranged in the gas treatment cavity and is positioned between the gas inlet and the gas outlet; and

the liquid supply mechanism comprises a first pump body, a second pump body and a liquid supplementing box, wherein the first pump body is connected between the sulfuric acid liquid accommodating cavity and the liquid supplementing box, and the second pump body is connected between the liquid supplementing box and the spraying mechanism.

In one possible implementation manner, the spraying mechanism comprises a plurality of spraying pipes which are respectively annular, the spraying pipes are concentrically arranged, the diameters of the spraying pipes are sequentially increased from inside to outside, and each spraying pipe is provided with a plurality of spraying ports along the circumferential direction of the spraying pipe.

In one possible implementation, the sulfuric acid spray tower further includes a packing assembly disposed within the gas treatment chamber, the packing assembly disposed below the spray mechanism and above the gas inlet.

In one possible implementation, the filler assembly includes at least one filler body that is a ceramic filler;

when the packing body is provided with a plurality of packing bodies, the plurality of packing bodies are arranged at intervals from top to bottom.

In one possible implementation, the filler assembly includes:

the frame body is arranged in the gas treatment cavity, is positioned between the spraying mechanism and the gas inlet, and has a hollow structure on each side wall;

the filler balls are arranged in the frame body, and the diameters of the filler balls are larger than the aperture of the hollowed-out hole of the frame body.

In one possible implementation, the filler assembly further comprises a stirring mechanism comprising:

the motor is arranged on the tower body;

the mounting plate is arranged in the gas treatment cavity and is connected with the rotating shaft of the motor; and

the stirring rods are respectively arranged on the mounting plate along the radial direction of the tower body.

In one possible implementation, the stirring rod is a telescopic stirring rod.

In one possible implementation, the filler balls are ceramic materials.

In one possible implementation, the VOC treatment apparatus further comprises at least one gas-collecting hood, the gas-outlet end of which communicates with the gas inlet.

In one possible implementation, an activated carbon adsorption device is further arranged between the water scrubber and the fan.

Compared with the prior art, the VOC processing device provided by the utility model has the beneficial effects that:

when the VOC treatment device provided by the utility model works, VOC gas enters from the gas inlet and sequentially passes through the sulfuric acid spray tower, the alkaline washing tower, the sodium hypochlorite oxidation tower, the water washing tower, the fan and the chimney, concentrated sulfuric acid is sprayed in the sulfuric acid spray tower, and the concentrated sulfuric acid reacts with substances such as mercaptan and thioether in the VOC gas to generate sulfuric acid ester, so that mercaptan and thioether substances contained in the VOC gas are removed. The VOC gas passes through the alkaline washing tower, and the alkaline liquor can remove the contained oxynitride and sulfide acid gas and a small amount of concentrated sulfuric acid carried out. The VOC gas can be passed through a sodium hypochlorite oxidation tower to remove organic substances such as aldehydes contained therein. The water scrubber can remove soluble components in VOC gas, and the fan and the chimney discharge the treated gas to the outside.

According to the utility model, the concentrated sulfuric acid spray tower is arranged at the front end of the whole treatment device, and the VOC gas enters the gas treatment cavity from the gas inlet to react with concentrated sulfuric acid liquid sprayed by the spray mechanism during operation, and the liquid supply mechanism is used for conveying the concentrated sulfuric acid liquid to the spray mechanism.

Drawings

Fig. 1 is a schematic structural view of a VOC treatment apparatus according to one embodiment of the present utility model;

FIG. 2 is a schematic diagram of a sulfuric acid spray tower in accordance with one embodiment of the present utility model;

FIG. 3 is a schematic view of a spray mechanism according to one embodiment of the present utility model;

fig. 4 is a schematic view showing a structure of a packing assembly according to another embodiment of the present utility model.

Reference numerals illustrate:

1. a VOC treatment device;

10. a sulfuric acid spray tower; 11. a tower body; 111. a gas inlet; 112. a gas outlet; 113. a gas treatment chamber; 12. a spraying mechanism; 121. a shower pipe; 13. a liquid supply mechanism; 131. a first pump body; 132. a second pump body; 133. a fluid supplementing box; 14. a filler assembly; 141. filling balls; 142. a motor; 143. a mounting plate; 144. a stirring rod;

20. an alkaline washing tower;

30. a sodium hypochlorite oxidation tower;

40. a water washing tower;

50. a blower;

60. a chimney;

70. an activated carbon adsorption device;

80. and a gas collecting hood.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "fixed," "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to," "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on," "disposed on" another element, it can be directly on the other element or intervening elements may also be present. "plurality" refers to two and more numbers. "at least one" refers to one and more quantities. "number" refers to one or more numbers.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

Referring to fig. 1 to 4, a VOC treatment apparatus 1 according to an embodiment of the utility model is described below.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a VOC treatment apparatus 1, which includes a sulfuric acid spray tower 10, an alkaline washing tower 20, a sodium hypochlorite oxidation tower 30, a water washing tower 40, a fan 50 and a chimney 60, which are sequentially connected. The sulfuric acid spray tower 10 comprises a tower body 11, a spray mechanism 12 and a liquid supply mechanism 13, wherein the tower body 11 is provided with a gas treatment cavity 113, a gas inlet 111 communicated with the lower part of the gas treatment cavity 113 and a gas outlet 112 communicated with the upper part of the gas treatment cavity 113, and a sulfuric acid liquid accommodating cavity is formed at the bottom of the gas treatment cavity 113; the spraying mechanism 12 is arranged in the gas treatment cavity 113 and is positioned between the gas inlet 111 and the gas outlet 112; the liquid supply mechanism 13 includes a first pump body 131, a second pump body 132, and a liquid replenishing tank 133, the first pump body 131 is connected between the sulfuric acid liquid accommodating chamber and the liquid replenishing tank 133, and the second pump body 132 is connected between the liquid replenishing tank 133 and the spray mechanism 12.

Compared with the prior art, the VOC processing device 1 provided by the embodiment of the utility model has the beneficial effects that:

when the VOC treatment device 1 provided by the embodiment of the utility model works, VOC gas enters from the gas inlet 111 and sequentially passes through the sulfuric acid spray tower 10, the alkaline washing tower 20, the sodium hypochlorite oxidation tower 30, the water washing tower 40, the fan 50 and the chimney 60, concentrated sulfuric acid is sprayed in the sulfuric acid spray tower 10, and the concentrated sulfuric acid reacts with substances such as mercaptan, thioether and the like in the VOC gas to generate sulfuric acid ester, so that mercaptan and thioether substances contained in the VOC gas are removed. The VOC gas is passed through a caustic scrubber 20 where the caustic removes the contained nitrogen oxides, sulfidic acid gases, and small amounts of concentrated sulfuric acid carried over. The VOC gas passes through the sodium hypochlorite oxidation tower 30, and organic substances such as aldehydes contained therein can be removed. The water scrubber 40 can remove the soluble components of the VOC gas, and the blower 50 and the stack 60 discharge the treated gas to the outside.

According to the embodiment of the utility model, the concentrated sulfuric acid spray tower 10 is arranged at the front end of the whole treatment device, and the VOC gas enters the gas treatment cavity 113 from the gas inlet 111 to react with concentrated sulfuric acid liquid sprayed by the spray mechanism 12 during working, and the liquid supply mechanism 13 is used for conveying the concentrated sulfuric acid liquid to the spray mechanism 12.

The VOC treatment apparatus 1 includes a sulfuric acid spray tower 10, an alkaline washing tower 20, a sodium hypochlorite oxidation tower 30, and a water washing tower 40 which are sequentially connected, the above components are communicated through a gas conveying pipeline, a gas flow path is shown by an arrow in fig. 1, power of gas flow is provided by a fan 50, and the treated gas is discharged to the outside through a chimney 60. The sulfuric acid spray tower 10, the alkaline washing tower 20, the sodium hypochlorite oxidation tower 30 and the water washing tower 40 act together, so that organic gases such as mercaptan, thioether, oxynitride, sulfide, aldehydes and other soluble gases contained in the VOC gas can be treated, and the air quality is ensured.

It should be noted that, in the embodiment of the present utility model, the alkaline washing tower 20, the sodium hypochlorite oxidizing tower 30, the water washing tower 40, the fan 50 and the chimney 60 may all be selected from structures or products in the prior art, and specific internal structures and working principles thereof are not described again.

For example, the alkaline washing tower 20 may be a spray tower capable of spraying a nitrogen hydroxide solution and a potassium hydroxide solution, or may be a tank containing an alkaline solution, and the gas enters from the gas inlet end of the alkaline washing tower 20, reacts with the alkaline solution, and is discharged from the gas outlet end. The sodium hypochlorite oxidizing tower 30 may be a spray tower that sprays sodium hypochlorite solution, or a tank that holds sodium hypochlorite solution. The water washing tower 40 may be a spray tower for spraying purified water, or may be a tank for containing purified water.

The liquid supply mechanism 13 comprises a first pump body 131, a second pump body 132 and a liquid supplementing box 133, wherein the first pump body 131 is connected between the sulfuric acid liquid accommodating cavity and the liquid supplementing box 133 and is used for conveying concentrated sulfuric acid in the sulfuric acid liquid accommodating cavity into the liquid supplementing box 133, and the second pump body 132 is connected with the liquid supplementing box 133 and the spraying mechanism 12 and is used for pumping the concentrated sulfuric acid in the liquid supplementing box 133 to the spraying mechanism 12 again. The first pump body 131 and the second pump body 132 may be carbon steel lined with tetrafluoro.

Referring to fig. 3, in some possible embodiments, the spraying mechanism 12 includes a plurality of spraying pipes 121 that are respectively annular, the spraying pipes 121 are concentrically arranged, and the diameters of the spraying pipes 121 sequentially increase from inside to outside, and each spraying pipe 121 is provided with a plurality of spraying ports along its own circumference.

The spraying mechanism 12 in this embodiment includes a plurality of spraying pipes 121, and can increase the spraying area, so that VOC gas can fully contact and react with concentrated sulfuric acid solution, and the treatment effect is improved. The spray mechanism 12 can be made of carbon steel lined with tetrafluoro or other materials that do not react with concentrated sulfuric acid.

Referring to fig. 2, in some possible embodiments, sulfuric acid spray tower 10 further includes a packing assembly 14 disposed within gas treatment chamber 113, packing assembly 14 being disposed below spray mechanism 12 and above gas inlet 111.

In this embodiment, the packing assembly 14 is disposed in the gas treatment chamber 113 of the sulfuric acid spray tower 10, and the packing assembly 14 is disposed on the cross section of the gas treatment chamber 113, and the packing assembly 14 has a plurality of holes for allowing the gas to pass through. The filler assembly 14 can block the flow speed of the VOC gas, so that the VOC gas can stay in the gas treatment cavity 113 for a longer time, the VOC gas and the concentrated sulfuric acid liquid are promoted to fully react, and the treatment effect is improved. On the other hand, the surfaces of the pores of the filler component 14 can be adhered with concentrated sulfuric acid liquid, so that the contact area of the concentrated sulfuric acid and VOC gas is increased, the VOC gas and the concentrated sulfuric acid liquid are fully contacted and reacted, and the treatment effect is improved.

Referring to fig. 2, in some possible embodiments, the filler assembly 14 includes at least one filler body that is a ceramic filler; when the packing body is provided with a plurality of packing bodies, the plurality of packing bodies are arranged at intervals from top to bottom.

The filler body in the embodiment is made of ceramic material, has excellent acid resistance and heat resistance, and can resist corrosion of various acids and alkalis except fluorine oxygen acid. The filler body made of ceramic material can be provided with a plurality of gas through holes (such as a cylinder, a square, a hexagon and the like) with regular shapes, and also can be provided with gas through holes with irregular shapes, so that gas can pass through the gas through holes.

When the packing body sets up a plurality of, a plurality of packing bodies from top to bottom interval setting can carry out a lot of separation to gas, promotes the gas reaction abundant.

Referring to fig. 4, in some possible embodiments, the filler assembly 14 includes a frame and a plurality of filler balls 141. The frame body is arranged in the gas treatment cavity 113 and is positioned between the spraying mechanism 12 and the gas inlet 111, and each side wall of the frame body is of a hollow structure; the plurality of filling balls 141 are arranged in the frame body, and the diameter of each filling ball 141 is larger than the aperture of the hollowed-out hole of the frame body.

In this embodiment, the packing assembly 14 includes a plurality of frames and packing balls 141, and the packing balls 141 are solid or hollow spheres, which may be ceramic or other materials that do not react with concentrated sulfuric acid. The frame is fixedly mounted in the gas treatment chamber 113 for accommodating the filler balls 141. The diameter of the hollowed-out hole of the frame body needs to be smaller than the diameter of the filler ball 141, so that gas and liquid pass through the hollowed-out hole, and the filler ball 141 cannot pass through the hollowed-out hole.

In this embodiment, the plurality of filling balls 141 are accommodated in the frame, gaps between the filling balls 141 can allow gas and concentrated sulfuric acid solution to pass through, and meanwhile, the surface of the filling ball 141 is adhered with the concentrated sulfuric acid solution, so that the gas and the concentrated sulfuric acid are fully contacted and reacted.

Referring to fig. 4, in some possible embodiments, the filler assembly 14 further comprises a stirring mechanism comprising: the motor 142, the mounting plate 143 and the stirring rods 144, wherein the motor 142 is arranged on the tower 11; the mounting plate 143 is provided in the gas processing chamber 113 and is connected to a rotation shaft of the motor 142; the plurality of stirring rods 144 are provided on the mounting plate 143 in the radial direction of the tower 11.

In this embodiment, the stirring mechanism is used for stirring the filler balls 141, and drives the mounting plate 143 and the stirring rod 144 to rotate through the motor 142, so as to stir the filler balls 141, avoid the gap blockage between the filler balls 141 after long service time, and ensure that gas can smoothly pass through.

In some possible embodiments, the stirring rod 144 is a telescoping stirring rod 144. With puddler 144 design for telescopic structure, when not needing to stir the material, puddler 144 shrink to the shortest gesture, can increase the effective area that gas passed through, guarantee to ventilate smoothly. When stirring is needed, the stirring rod 144 stretches to stir the filler balls 141, so that hardening and blocking are prevented.

The stirring rod 144 can be driven to stretch by a driving member such as an air cylinder and an electric telescopic rod.

In some possible embodiments, the filler balls 141 are ceramic.

Referring to fig. 1, in some possible embodiments, the VOC treatment apparatus 1 further includes at least one gas-collecting hood 80, where an air outlet end of the gas-collecting hood 80 is connected to the air inlet 111, and the gas-collecting hood 80 is disposed on top of the workshop, so as to collect VOC gas diffused in the workshop and ensure air quality in the workshop.

Referring to fig. 1, in some possible embodiments, an activated carbon adsorption device 70 is further disposed between the water scrubber 40 and the fan 50, and is capable of adsorbing VOC gas and eliminating odor.

It will be appreciated that the portions of the foregoing embodiments may be freely combined or omitted to form different combined embodiments, and the details of the respective combined embodiments are not described herein, so that after the description, the present disclosure may be considered as having described the respective combined embodiments, and the different combined embodiments can be supported.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

The VOC treatment device is characterized by comprising a sulfuric acid spray tower, an alkaline washing tower, a sodium hypochlorite oxidation tower, a water washing tower, a fan and a chimney which are sequentially connected;

the sulfuric acid spray tower comprises:

the tower body is provided with a gas treatment cavity, a gas inlet communicated with the lower part of the gas treatment cavity and a gas outlet communicated with the upper part of the gas treatment cavity, and the bottom of the gas treatment cavity forms a sulfuric acid liquid containing cavity;

the spraying mechanism is arranged in the gas treatment cavity and is positioned between the gas inlet and the gas outlet; and

the liquid supply mechanism comprises a first pump body, a second pump body and a liquid supplementing box, wherein the first pump body is connected between the sulfuric acid liquid accommodating cavity and the liquid supplementing box, and the second pump body is connected between the liquid supplementing box and the spraying mechanism.
2. The VOC treatment apparatus of claim 1 wherein the spray mechanism comprises a plurality of spray pipes each having a ring shape, wherein the plurality of spray pipes are concentrically arranged, and the diameters of the plurality of spray pipes are sequentially increased from inside to outside, and each spray pipe is provided with a plurality of spray ports along its circumferential direction.
3. The VOC treatment apparatus of claim 1 wherein the sulfuric acid spray tower further comprises a packing assembly disposed within the gas treatment cavity, the packing assembly disposed below the spray mechanism and above the gas inlet.
4. The VOC treatment apparatus of claim 3 wherein the packing assembly comprises at least one packing body, the packing body being a ceramic packing;

when the packing body is provided with a plurality of packing bodies, the plurality of packing bodies are arranged at intervals from top to bottom.
5. The VOC treatment apparatus of claim 3 wherein the filler assembly comprises:

the frame body is arranged in the gas treatment cavity, is positioned between the spraying mechanism and the gas inlet, and has a hollow structure on each side wall;

the filler balls are arranged in the frame body, and the diameters of the filler balls are larger than the aperture of the hollowed-out hole of the frame body.
6. The VOC treatment apparatus of claim 5 wherein the filler assembly further comprises a stirring mechanism comprising:

the motor is arranged on the tower body;

the mounting plate is arranged in the gas treatment cavity and is connected with the rotating shaft of the motor; and

the stirring rods are respectively arranged on the mounting plate along the radial direction of the tower body.
7. The VOC treatment apparatus of claim 6 wherein the agitator bar is a telescoping agitator bar.
8. The VOC treatment apparatus of any one of claims 5-7 wherein the filler balls are ceramic.
9. The VOC treatment apparatus of claim 1 further comprising at least one gas-collection hood, an outlet end of the gas-collection hood in communication with the gas inlet.
10. The VOC treatment apparatus of claim 1 wherein an activated carbon adsorption device is also provided between the water scrubber and the blower.