CN213668703U

CN213668703U - Waste gas treatment system

Info

Publication number: CN213668703U
Application number: CN202021971538.4U
Authority: CN
Inventors: 王庆鑫
Original assignee: Yantai Jincheng Environmental Engineering Co ltd
Current assignee: Yantai Jincheng Environmental Engineering Co ltd
Priority date: 2020-09-10
Filing date: 2020-09-10
Publication date: 2021-07-13
Anticipated expiration: 2030-09-10

Abstract

The utility model relates to a waste gas treatment system, which comprises a spray tower and is characterized in that an impact mixing pipe group is arranged in the inner cavity of the spray tower and below an air inlet; the impact mixing pipe group comprises a main liquid inlet pipe, a plurality of liquid separating pipes are communicated with the main liquid inlet pipe, at least one impact flow mixing hole is formed in each liquid separating pipe, and the impact flow mixing holes in two adjacent liquid separating pipes are arranged oppositely in pairs; a water inlet pipe of the first gas-liquid mixing pump is communicated with the bottom of the inner cavity of the spray tower, a liquid outlet pipe of the first gas-liquid mixing pump is communicated with a main liquid inlet pipe of the mixing pipe group, a liquid inlet pipe of the second gas-liquid mixing pump is communicated with the circulating water tank, and a liquid outlet pipe of the second gas-liquid mixing pump is communicated with the spray pipe; the circulating water tank is communicated with the inner cavity of the spray tower; the ozone generator is communicated with the air inlet pipe of the first air-liquid mixing pump and the air inlet pipe of the second air-liquid mixing pump through an ozone conveying pipe. The purification system of this application can effectually handle the waste gas that trades such as refuse treatment factory, sewage treatment plant, feed factory and fertilizer processing factory produced.

Description

Waste gas treatment system

Technical Field

The utility model relates to a waste gas treatment system belongs to exhaust-gas treatment technical field.

Background

At present, waste gas is easily generated in the production of chemical plants, garbage treatment plants, sewage treatment plants, feed plants, fertilizer processing plants, livestock and poultry breeding and other industries, ozone is used for treatment, and a scheme of using ozone for waste gas treatment is provided, but the existing scheme has low utilization rate of ozone, so that ozone waste is caused; therefore, it is a problem to be studied by those skilled in the art to design an exhaust gas treatment device that improves the utilization rate of ozone.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that exists among the prior art, provide a waste gas treatment system. The gas-liquid mixing mode realized by the gas-liquid mixing pump solves the problems of large ozone bubbles, small mass transfer area and low mass transfer efficiency generated by the traditional gas-liquid reactor (such as a bubble tower). The gas-liquid mixing pump is used as the ozone micro-nano bubble generating device, and has the characteristics of good gas dissolving effect (the gas dissolving rate is as high as 95%), high mass transfer efficiency, small (20-30um) and uniform bubble particle size, stable gas supply and the like; the ozone micro-nano bubbles have the characteristics of large specific surface area, long retention time in water, high gas-liquid mass transfer efficiency, capability of releasing and generating free radicals during breakage and the like. Except setting up in the spray column and spraying layer, packing layer, creatively set up circulating water impinging stream mixing hole, ozone in coordination with the catalyst layer simultaneously, can realize exhaust purification and circulating water self-purification simultaneously, solve the problem that circulating sewage produces secondary pollution.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a waste gas treatment system comprises a spray tower and is characterized in that an impact mixing pipe group is arranged in an inner cavity of the spray tower and below a gas inlet; the impact mixing pipe group comprises a main liquid inlet pipe, a plurality of liquid separating pipes are communicated with the main liquid inlet pipe, at least one impact flow mixing hole is formed in each liquid separating pipe, and the impact flow mixing holes in two adjacent liquid separating pipes are arranged oppositely in pairs; the inlet tube of the first gas-liquid mixing pump is communicated with the bottom of the inner cavity of the spray tower, the liquid outlet tube of the first gas-liquid mixing pump is communicated with the main liquid inlet tube of the mixing tube group, the liquid inlet tube of the second gas-liquid mixing pump is communicated with the circulating water tank, and the liquid outlet tube of the second gas-liquid mixing pump is communicated with the spray tube ozone generator and is communicated with the gas inlet tubes of the first gas-liquid mixing pump and the second gas-liquid mixing pump through the ozone conveying tube.

In the method, purified water at the bottom of the spray tower is mixed with ozone by the gas-liquid mixing pump and is sprayed out from the two opposite impact mixing holes, and the purified water is further mixed under the spraying impact of the impact mixing holes while the gas-liquid mixing pump is mixed, so that bubbles can reach the micro-nano level, the utilization rate of ozone is improved, the water which is sprayed above the waste gas to treat the waste gas absorbs components (such as ammonia and the like) in the waste gas to be further treated, and the water at the bottom of the spray tower keeps a pure state; meanwhile, the ozone content in the water at the bottom of the spraying tower is high, so that the ozone content in the spraying water is high, and the waste gas treatment capacity is high.

On the basis of the technical scheme, the utility model discloses a reach the convenience of use and the stability of equipment, can also make following improvement to foretell technical scheme:

furthermore, the circulating water tank is communicated with the inner cavity of the spray tower.

Furthermore, the impinging stream mixing hole is provided with an injection pipe. The distance between the impingement mixing holes can be adjusted by the jet pipe as desired.

Furthermore, the impact mixing pipe group also comprises a transverse liquid dividing pipe; the horizontal liquid distribution pipe is perpendicular to the main liquid inlet pipe, and the liquid distribution pipe is perpendicular to the horizontal liquid distribution pipe. The combination form of the liquid separating pipe is improved, and the adaptability of the device is improved.

Furthermore, a catalyst packing layer is arranged at the lower part in the spray tower, and the catalyst packing layer is positioned below the impact mixing pipe group and above a liquid inlet pipe of the first gas-liquid mixing pump. The catalyst filler is used for further forming a large amount of hydroxyl radicals (. OH) from ozone in water, so that the purification efficiency of circulating water in the tank body is improved.

Further, the air inlet of the spray tower is arranged on the side wall of the spray tower, the air outlet of the spray tower is arranged at the top of the spray tower, the top of the inner cavity of the spray tower is provided with a demisting layer, a spray pipe is arranged below the demisting layer, and a filler is arranged below the spray pipe; the filler is positioned above the air inlet.

Furthermore, the filler adopts pall ring filler.

The utility model has the advantages that: compared with the traditional ozone oxidation method for treating waste gas, the utility model designs the micro-nano dissolved ozone, greatly improves the solubility of ozone in water, enables the concentration of ozone in water to reach 14ppm at most, increases the generation amount of hydroxyl free radicals (OH) by multiple of the realization of micro-nano bubbles, and enables the micro-nano bubbles to realize the non-selectivity rapid degradation and mineralization of various components in the waste gas, thereby greatly improving the treatment effect on the waste gas; the design of the metal oxide catalyst (in the form of solid particles, easy solid-liquid separation, convenient operation and high catalytic ozone decomposition efficiency) and the circulating water impinging stream mixing hole (forcing the circulating water to carry out gas-liquid mixing and promoting the ozone micro-nano bubbles to break in the liquid phase) can keep the hydroxyl radical (OH) in the circulating water at higher concentration and promote the malodorous pollutants dissolved in the circulating water to be degraded in real time, thereby realizing the self-purification of the circulating water, realizing the simultaneous purification treatment of the waste gas and the circulating wastewater in a spray tower, not needing to frequently replace the circulating water, and having obvious effect on saving water resources. The utility model discloses compare in other exhaust-gas treatment methods such as biological filter, have especially that the treatment effect lasts stably, easily realize automatic operation, bearing load ability is big, area is little, use cost low grade technical advantage, be applicable to refuse treatment factory, sewage treatment plant, feed factory and fertilizer processing factory, beasts and birds breed trade exhaust-gas treatment.

Drawings

FIG. 1 is a schematic block diagram of an exhaust treatment system according to the present application;

fig. 2 is a schematic diagram of the impingement mixing tube bank.

The reference numbers are recorded as follows: 1-ozone generator, 2-first gas-liquid mixing pump spray pipe, 3-second gas-liquid mixing pump, 4-spray pipe, 5-catalyst packing layer, 6-impact mixing pipe group, 6.1-main liquid inlet pipe, 6.2-transverse liquid separating pipe, 6.3-liquid separating pipe, 6.4-impact flow mixing hole, 7-packing, 8-circulating water tank, 9-spray tower, 10-demisting layer and 11-gas inlet.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

A waste gas treatment system (see figures 1 and 2) comprises a spray tower 9, wherein a gas inlet 11 of the spray tower 9 is arranged on the side wall of the spray tower 9, a gas outlet of the spray tower 9 is arranged at the top of the spray tower 9, a demisting layer 10 is arranged at the top of an inner cavity of the spray tower 9, a spray pipe 4 is arranged below the demisting layer 10, a filler 7 is arranged below the spray pipe 4, and a pall ring filler is selected; the filler 7 is positioned above the air inlet 11; an impact mixing pipe group 6 is arranged in the inner cavity of the spray tower 9 and below the air inlet 11; the impact mixing pipe group 6 comprises a main liquid inlet pipe 6.1, a plurality of liquid separating pipes 6.3 are communicated with the main liquid inlet pipe 6.1, the liquid separating pipes 6.3 can be directly communicated with the main liquid inlet pipe 6.1 or can be communicated with the main liquid inlet pipe 6.1 through a transverse liquid separating pipe 6.2, when the liquid separating pipes are directly communicated with the main liquid inlet pipe, the liquid separating pipes can be arranged vertical to the main liquid inlet pipe, at least one impact flow mixing hole 6.4 is formed in each liquid separating pipe 6.3, and the impact flow mixing holes 6.4 in two adjacent liquid separating pipes 6.3 are arranged oppositely and pairwise; the water inlet pipe of the first gas-liquid mixing pump 2 is communicated with the bottom of the inner cavity of the spray tower 9, the liquid outlet pipe of the first gas-liquid mixing pump 2 is communicated with the main liquid inlet pipe 6.1 of the impact mixing pipe group 6, the liquid inlet pipe of the second gas-liquid mixing pump 3 is communicated with the circulating water tank 8, and the liquid outlet pipe of the second gas-liquid mixing pump 3 is communicated with the spray pipe 4, wherein the circulating water tank 8 can be communicated with the inner cavity of the spray tower 9; the ozone generator 1 is communicated with the air inlet pipes of the first air-liquid mixing pump 2 and the second air-liquid mixing pump 3 through an ozone conveying pipe 12; the lower part in the spray tower 9 is provided with a catalyst packing layer 5, and the catalyst packing layer 5 is positioned below the impact mixing tube group 6 and above the liquid inlet tube of the first gas-liquid mixing pump 2. The system can effectively improve the ozone content in water in the spray tower, and utilizes the catalyst packing layer to improve the reaction efficiency in the spray tower.

Wherein, the impinging stream mixing hole 6.4 is provided with an injection pipe which is arranged vertical to the liquid dividing pipe;

a transverse liquid-dividing pipe 6.2 can be arranged in the impact mixing pipe group 6; the horizontal liquid distribution pipe 6.2 is vertical to the main liquid inlet pipe 6.1, and the liquid distribution pipe 6.3 is vertical to the horizontal liquid distribution pipe 6.2.

The application of the waste gas treatment system is applied to the waste gas treatment of animal innocent treatment enterprises, and the detection results obtained by sampling the detection points of the exhaust funnel are as follows:

as can be seen from the detection results in the table above, substances which produce pungent taste in the tail gas treated by the waste gas treatment system are obviously reduced, and the concentration of the waste gas is greatly reduced and is completely reached and far lower than the limit value of the emission standard.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An exhaust gas treatment system comprises a spray tower (9), and is characterized in that an impact mixing tube group (6) is arranged in the inner cavity of the spray tower (9) and below a gas inlet (11); the impact mixing pipe group (6) comprises a main liquid inlet pipe (6.1), a plurality of liquid separating pipes (6.3) are communicated with the main liquid inlet pipe (6.1), at least one impact flow mixing hole (6.4) is formed in each liquid separating pipe (6.3), and the impact flow mixing holes (6.4) in two adjacent liquid separating pipes (6.3) are arranged oppositely and pairwise; a water inlet pipe of the first gas-liquid mixing pump (2) is communicated with the bottom of an inner cavity of the spray tower (9), a liquid outlet pipe of the first gas-liquid mixing pump (2) is communicated with a main liquid inlet pipe (6.1) of the impact mixing pipe group (6), a liquid inlet pipe of the second gas-liquid mixing pump (3) is communicated with the circulating water tank (8), and a liquid outlet pipe of the second gas-liquid mixing pump (3) is communicated with the spray pipe (4); the ozone generator (1) is communicated with the air inlet pipe of the first air-liquid mixing pump (2) and the air inlet pipe of the second air-liquid mixing pump (3) through an ozone conveying pipe (12).

2. An exhaust gas treatment system according to claim 1, characterized in that the circulation tank (8) communicates with the inner cavity of the spray tower (9).

3. Exhaust gas treatment system according to claim 1, characterized in that the impinging stream mixing holes (6.4) are provided with injection pipes.

4. An exhaust gas treatment system according to any of claims 1-3, characterized in that the impingement mixing tube group (6) further comprises a transverse liquid distribution tube (6.2); the transverse liquid separating pipe (6.2) is vertical to the main liquid inlet pipe (6.1), and the liquid separating pipe (6.3) is vertical to the transverse liquid separating pipe (6.2).

5. The waste gas treatment system according to claim 1, characterized in that a catalyst packing layer (5) is arranged at the lower part in the spray tower (9), and the catalyst packing layer (5) is positioned below the impingement mixing tube group (6) and above the liquid inlet pipe of the first gas-liquid mixing pump (2).

6. The waste gas treatment system of claim 1, wherein the gas inlet (11) of the spray tower (9) is arranged on the side wall of the spray tower (9), the gas outlet of the spray tower (9) is arranged at the top of the spray tower (9), the top of the inner cavity of the spray tower (9) is provided with a demisting layer (10), the spray pipe (4) is arranged below the demisting layer (10), and the filler (7) is arranged below the spray pipe (4); the filler (7) is positioned above the air inlet (11).

7. Exhaust gas treatment system according to claim 6, characterized in that the packing (7) is a pall ring packing.