CN113413732B

CN113413732B - Waste gas atomizing cooling treatment equipment

Info

Publication number: CN113413732B
Application number: CN202110759093.6A
Authority: CN
Inventors: 许开华; 魏琼
Original assignee: Jingmen GEM New Material Co Ltd
Current assignee: Jingmen GEM New Material Co Ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2022-07-12
Anticipated expiration: 2041-07-05
Also published as: CN113413732A

Abstract

The invention relates to a waste gas atomization cooling treatment device, which comprises a waste gas pipe, an atomization device and a cooling device, wherein the atomization device comprises a liquid storage tank and an atomization sheet, a containing cavity is formed in the liquid storage tank and is used for containing waste gas treatment liquid, the containing cavity is communicated with the waste gas pipe through a gas outlet of the liquid storage tank, and the atomization sheet is arranged in the containing cavity and is used for atomizing the treatment liquid in the liquid storage tank; the cooling device comprises a cooling pipe and a cooling part, the air outlet end of the exhaust pipe is communicated with the air inlet end of the cooling pipe, and the cooling part at least wraps part of the cooling pipe to cool the air in the cooling pipe. The embodiment of the invention has the following beneficial effects: this waste gas atomizing cooling treatment equipment utilizes the atomizing piece to produce the high frequency oscillation, throws the processing liquid away from the liquid level and produces elegant water smoke, and the droplet size in the water smoke will be less than far away and spray the production, and the total area of contact who produces when mixing with waste gas is bigger, and absorption efficiency is higher.

Description

Waste gas atomizing cooling treatment equipment

Technical Field

The invention relates to the technical field of environment-friendly equipment, in particular to waste gas atomization cooling treatment equipment.

Background

The spray absorption tower is a common air purification device, such as a flue gas spray absorption tower with application number 201922252800.3, and the working principle is to utilize the contact between gas and spray liquid, so as to transmit pollutants in the gas to be treated into the liquid, thereby achieving the purpose of waste gas purification. The gas-liquid reverse absorption mode is generally adopted for treatment, the spray liquid is sprayed downwards from the top of the tower to form a fog shape, and the waste gas to be treated flows upwards in a counter-current manner from the bottom of the tower to contact with the gas-liquid.

Obviously, the larger the contact area of the treatment liquid with the exhaust gas, the higher the absorption efficiency of the harmful substances in the exhaust gas. The total surface area of the treatment fluid can be significantly increased by dispersing the treatment fluid in small droplets, and the smaller the droplet size, the larger the total surface area and the higher the absorption efficiency.

The size of the sprayed small liquid drops is limited in the feasible size range of the existing spray absorption tower, and the technical difficulty and the equipment cost are obviously increased if the size of the liquid drops is further reduced.

Disclosure of Invention

In view of the above, there is a need to provide an exhaust gas atomizing and cooling treatment apparatus, which is used to solve the technical problem in the prior art that the size of liquid droplets ejected from a spray-type absorption tower is limited by the cost and is difficult to be reduced continuously, so that the absorption efficiency is difficult to be improved continuously.

The present invention provides an exhaust gas atomizing, cooling and treating apparatus, comprising: the system comprises an exhaust pipe, an atomizing device and a cooling device, wherein the atomizing device comprises a liquid storage tank and an atomizing sheet, a containing cavity is formed in the liquid storage tank and is used for containing exhaust treatment fluid, the containing cavity is communicated with the exhaust pipe through an air outlet of the liquid storage tank, and the atomizing sheet is arranged in the containing cavity and is used for atomizing the treatment fluid in the liquid storage tank; the cooling device comprises a cooling pipe and a cooling part, wherein the bottom surface of the cooling pipe is sealed, the air outlet end of the waste gas pipe is communicated with the cooling pipe, and the cooling part at least wraps part of the cooling pipe to supply gas in the cooling pipe.

Furthermore, the exhaust pipe is given vent to anger and is held and insert the cooling tube from upwards down in, forms the clearance that supplies the condensate liquid to flow between exhaust pipe outer wall and the cooling tube inner wall, and the cooling tube bottom surface slope is arranged, has seted up the leakage fluid dram at the lowest of cooling tube bottom surface.

Furthermore, the cooling device also comprises a return pipe, the upper end of the return pipe is communicated with the liquid outlet, and the lower end of the return pipe is communicated with the accommodating cavity.

Furthermore, the atomization device also comprises a partition board arranged in the liquid storage tank, the containing cavity is divided into an inner cavity and an outer cavity which are communicated with each other below by the partition board, the outer cavity is arranged around the inner cavity, the inner cavity is arranged in the atomization sheet, the air outlet is communicated with the inner cavity, and the return pipe is communicated with the outer cavity.

Furthermore, atomizing device still includes the sealed lid of sealing connection can be dismantled with trade material pipe one end to the material pipe, and the one end intercommunication exocoel that sealed lid was kept away from to the trade material pipe.

Further, atomizing device still includes rabbling mechanism, and rabbling mechanism includes the stirring head and is connected and drive its rotatory motor with the stirring head, and the stirring head arranges in inner chamber and exocoel communicating region.

Furthermore, a thin pipe part consisting of a plurality of thin pipes is formed in the middle of the cooling pipe, and the cooling part wraps the thin pipe part and is used for cooling gas in the thin pipes.

Furthermore, cooling device still includes the direction baffle that sets up directly over the end of giving vent to anger of exhaust gas pipe, and the interval that supplies the waste gas circulation is formed between direction baffle lower surface and the end of giving vent to anger of exhaust gas pipe for reduce the speed of the waste gas that the end of giving vent to anger of exhaust gas pipe flows.

Furthermore, the shape and size of the guide baffle are larger than the air outlet end of the exhaust gas pipe, and a slope with a high edge bottom in the middle is formed on the upper surface of the guide baffle and is used for guiding liquid obtained by condensation in the thin pipe into a gap between the outer wall of the exhaust gas pipe and the inner wall of the cooling pipe.

Furthermore, the atomizing sheet is an ultrasonic atomizing sheet.

Compared with the prior art, the waste gas atomization cooling treatment equipment utilizes the atomization sheet to generate high-frequency oscillation, the treatment liquid is thrown away from the liquid surface to generate elegant water mist, and the waste gas flowing at high speed in the waste gas pipe sucks the water mist into the waste gas through the Venturi effect and automatically mixes the water mist; the size of small liquid drops in the water mist generated by high-frequency oscillation of the atomizing sheet is far smaller than that generated by spraying, the total contact area generated when the small liquid drops are mixed with waste gas is larger, and the absorption efficiency is higher.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to be implemented in accordance with the content of the specification, the following detailed description is given with reference to the accompanying drawings and preferred embodiments of the present invention. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an exhaust gas atomizing, cooling and treating apparatus provided by the present invention;

FIG. 2 is a schematic view of the atomizer of FIG. 1;

fig. 3 is a schematic structural diagram of the cooling device in fig. 1.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

Referring to fig. 1 to 3, the exhaust gas atomizing and cooling treatment apparatus includes an exhaust gas pipe, an atomizing device and a cooling device, wherein exhaust gas flows at a high speed in the exhaust gas pipe 1, and the atomizing device 2 is communicated with the exhaust gas pipe 1, and can atomize a treatment liquid and introduce the treatment liquid into the exhaust gas pipe to mix with the exhaust gas, so as to absorb and treat harmful substances therein. The cooling device 3 is used for cooling the exhaust gases, on the one hand to reduce the temperature of the exhaust gases and on the other hand to condense the moisture therein.

The atomization device 2 comprises a liquid storage tank 21 and an atomization sheet 22, a containing cavity is formed in the liquid storage tank 21 and used for containing waste gas treatment liquid, the containing cavity is communicated with the waste gas pipe 1 through a gas outlet of the liquid storage tank 21, and the atomization sheet 22 is arranged in the containing cavity and used for atomizing the treatment liquid in the liquid storage tank 21. Since the exhaust gas flows at a high speed in the exhaust gas pipe 1, the atomized treatment liquid is sucked into the exhaust gas pipe 1 to be mixed with the exhaust gas according to the venturi principle as the flow rate is higher and the pressure is lower. In this embodiment, the atomizing plate 22 preferably employs an ultrasonic atomizing plate, which generates high-frequency oscillation to throw the treating fluid away from the liquid surface to generate elegant water mist, so as to directly obtain small droplets of the treating fluid, thereby avoiding the occurrence of separation between solute and solvent caused by evaporation.

The cooling device 3 comprises a cooling pipe 31 and a cooling part 32, the bottom surface of the cooling pipe 31 is sealed, an air outlet for discharging the waste gas is arranged above the cooling pipe 31, the air outlet end of the waste gas pipe 1 is communicated with the cooling pipe 31, and the cooling part 32 at least wraps part of the gas in the cooling pipe 31 and is used for cooling the cooling pipe 31. In the present application, the cooling portion 32 may adopt a compressor cooling method, a semiconductor cooling plate cooling method, and the like, which are well known in the art of refrigeration, and can be used by a skilled person.

Since the cooling portion 32 cools the cooling pipe 31, moisture in the exhaust gas may condense on the inner wall of the cooling pipe 31, and the liquid is prevented from flowing back into the exhaust pipe and being evaporated again. In this embodiment, the air outlet end of the exhaust gas pipe 1 is inserted into the cooling pipe 31 from bottom to top through the bottom surface of the cooling pipe 31, and the inner diameter of the cooling pipe 31 is larger than the outer diameter of the exhaust gas pipe 1, so that a gap for flowing the condensed liquid is formed between the outer wall of the exhaust gas pipe 1 and the inner wall of the cooling pipe 31. Then the bottom surface of the cooling pipe 31 is obliquely arranged, and a liquid discharge port is arranged at the lowest position of the bottom surface, so that the condensed liquid flows into the gap along the inner wall of the cooling pipe 31 and then flows to the liquid discharge port along the oblique bottom surface to be discharged.

In order to sufficiently absorb the harmful substances in the exhaust gas, the amount of atomization of the treatment liquid is generally excessive, and therefore the condensate liquid also contains unreacted active ingredients. In order to avoid waste, a return pipe 33 can be arranged, the upper end of the return pipe 33 is communicated with the liquid outlet, the lower end of the return pipe is communicated with the accommodating cavity, and the return pipe is guided back to the accommodating cavity for reuse.

Therefore, in this embodiment, the atomization device 2 preferably further includes a partition plate 23, which is disposed in the reservoir 21 and divides the accommodation chamber into an outer chamber and an inner chamber that are communicated with each other at the lower part, and the outer chamber is disposed around the inner chamber. The atomizing plate 22 is arranged in the inner cavity, and the air outlet is communicated with the inner cavity. The return pipe 33 communicates with the outer chamber.

As the treatment proceeds, the effective components in the treatment liquid are consumed, and in order to perform the treatment continuously without interruption, the effective components need to be replenished into the containing chamber. Therefore, the atomizing device 2 further comprises a material changing pipe 24 and a sealing cover 25, wherein one end of the material changing pipe 24 is communicated with the outer cavity, and the other end of the material changing pipe is sealed by the sealing cover 25. The effective components can be supplemented into the containing cavity through the material changing pipe 24 by opening the sealing cover 25. The supplement mode can be that a certain amount of effective components are added into the liquid storage tank 21 by opening the sealing cover 25 at each period of time, or the material changing pipe 24 is communicated with an external pipeline, and the effective components are continuously supplemented into the liquid storage tank at a proper speed, so that the supplement amount and the consumption are the same, and the effective components in the liquid storage tank 21 are kept stable.

Because the concentration difference of the effective components in the supplemented and refluxed treatment liquid is large, the treatment liquid is preferably introduced into the outer cavity first, and then is introduced into the inner cavity for atomization after being uniformly mixed, therefore, a stirring mechanism 26 is preferably further arranged, the stirring mechanism 26 comprises a stirring head 261 and a motor 262 which is connected with the stirring head 261 and drives the stirring head to rotate, and the stirring head 261 is arranged in a communicating area of the inner cavity and the outer cavity, so that the treatment liquid with different concentrations in the outer cavity can be uniformly mixed and then is introduced into the inner cavity.

In order to obtain a better cooling effect in the cooling of the cooling device 3, the contact area between the cooling pipe 31 and the cooling portion 32 may be increased to increase the heat transfer efficiency. It is therefore preferable that a narrow tube part 311 composed of a plurality of narrow tubes be formed in the middle of the cooling tube 31, and the cooling part 32 wrap the narrow tube part 311. After the exhaust gas is introduced into the cooling pipe 31, the exhaust gas flows through different narrow pipes, and is cooled in the narrow pipe 311.

All can condense the liquid bead on every tubule inner wall like this, and partial tubule inner wall is not located the top in clearance between exhaust pipe 1 and cooling tube 31, and the liquid drop of condensation can drip into in the exhaust pipe 1. Therefore, the guide baffle 34 is arranged right above the outlet end of the exhaust pipe 1, and an interval for the exhaust gas to flow is formed between the lower surface of the guide baffle 34 and the outlet end of the exhaust pipe 1, so that the speed of the exhaust gas flowing out of the outlet end of the exhaust pipe 1 can be reduced.

And the shape and size of the guide baffle 34 are larger than the air outlet end of the exhaust gas pipe 1, and a slope with a high edge bottom in the middle is formed on the upper surface of the guide baffle 34 and is used for guiding the liquid condensed in the thin pipe into a gap between the outer wall of the exhaust gas pipe 1 and the inner wall of the cooling pipe 31.

This waste gas atomizing cooling treatment equipment produces the high frequency through atomizing piece 22 and vibrates, throws the processing liquid and leaves the liquid level and produce elegant water smoke, and high-speed mobile waste gas passes through the venturi effect in the waste gas pipe 1 and inhales waste gas with water smoke and automatic mixing. The size of the liquid drops generated by atomization is extremely small, the liquid drops can be fully contacted with harmful substances in the waste gas, a huge total contact area is obtained, and the mixing reaction of effective components in the treatment liquid and the harmful substances in the waste gas is greatly accelerated. And enters the cooling pipe 31 together with the exhaust gas pipe 1, and after being cooled by the cooling unit 32, the reacted treatment liquid is condensed and collected at the bottom of the cooling pipe 31, and is returned to the reservoir tank 21 through the return pipe 33 to be reused. Meanwhile, the material changing pipe 24 replenishes the consumed treatment liquid into the liquid storage tank 21, and if sediment is generated in the liquid storage tank 21, the sediment can be discharged through the material changing pipe 24.

The embodiment of the invention has the following beneficial effects: the waste gas atomization cooling treatment equipment utilizes the atomization sheet to generate high-frequency oscillation, the treatment liquid is thrown away from the liquid surface to generate elegant water mist, and the waste gas flowing at high speed in the waste gas pipe sucks the water mist into the waste gas through the Venturi effect and automatically mixes the water mist; the size of small liquid drops in the water mist generated by high-frequency oscillation of the atomizing plate is far smaller than that generated by spraying, the total contact area generated when the small liquid drops are mixed with waste gas is larger, and the absorption efficiency is higher.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. An exhaust gas atomizing cooling treatment apparatus, characterized by comprising: the device comprises an exhaust gas pipe, an atomizing device and a cooling device, wherein the atomizing device comprises a liquid storage tank, a partition plate and an atomizing sheet, an accommodating cavity is formed in the liquid storage tank and is used for accommodating an exhaust gas treatment liquid, the accommodating cavity is divided into an inner cavity and an outer cavity which are communicated with each other at the lower part by the partition plate, the outer cavity is arranged around the inner cavity, the inner cavity is communicated with the exhaust gas pipe through an air outlet of the liquid storage tank, and the atomizing sheet is arranged in the inner cavity and is used for atomizing the treatment liquid in the liquid storage tank; the cooling device comprises a cooling pipe, a return pipe and a cooling part, wherein the bottom surface of the cooling pipe is sealed, the gas outlet end of the waste gas pipe is communicated with the cooling pipe, the cooling part at least wraps part of the cooling pipe for cooling gas in the cooling pipe, the upper end of the return pipe is communicated with the cooling pipe, and the lower end of the return pipe is communicated with the outer cavity.

2. The exhaust gas atomizing and cooling treatment equipment according to claim 1, wherein the exhaust end of the exhaust pipe is inserted into the cooling pipe from bottom to top, a gap for flowing condensed liquid is formed between the outer wall of the exhaust pipe and the inner wall of the cooling pipe, the bottom surface of the cooling pipe is arranged in an inclined manner, and a liquid discharge port is formed at the lowest position of the bottom surface of the cooling pipe.

3. The atomized cooled exhaust gas treatment device according to claim 2, wherein the upper end of the return pipe is communicated with the liquid discharge port.

4. The exhaust gas atomizing and cooling treatment equipment as set forth in claim 3, wherein the atomizing device further comprises a material changing pipe and a sealing cover detachably and hermetically connected with one end of the material changing pipe, and one end of the material changing pipe, which is far away from the sealing cover, is communicated with the outer cavity.

5. The exhaust gas atomizing and cooling treatment device according to claim 4, wherein the atomizing device further comprises a stirring mechanism, the stirring mechanism comprises a stirring head and a motor connected with the stirring head and driving the stirring head to rotate, and the stirring head is disposed in a communication area between the inner chamber and the outer chamber.

6. The exhaust gas atomizing and cooling treatment apparatus according to claim 2, wherein a thin tube portion composed of a plurality of thin tubes is formed in the middle of the cooling tube, and the cooling portion wraps the thin tube portion for cooling the gas in the thin tubes.

7. The exhaust gas atomizing and cooling treatment equipment according to claim 6, wherein the cooling device further includes a guide baffle plate disposed directly above the exhaust gas outlet end of the exhaust gas pipe, and an interval for exhaust gas to flow is formed between a lower surface of the guide baffle plate and the exhaust gas outlet end of the exhaust gas pipe, so as to reduce the velocity of the exhaust gas flowing out of the exhaust gas outlet end of the exhaust gas pipe.

8. The exhaust gas atomizing and cooling treatment device according to claim 7, wherein the shape and size of the guide baffle are larger than those of the exhaust end of the exhaust pipe, and a slope with a high edge at the middle is formed on the upper surface of the guide baffle, so that liquid condensed in the thin pipe is guided into a gap between the outer wall of the exhaust pipe and the inner wall of the cooling pipe.

9. The exhaust gas atomizing, cooling and treating device according to claim 1, wherein the atomizing plate is an ultrasonic atomizing plate.