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Apparatus for removing trace acidic gas in indoor air, and method and application thereof

A technology for indoor air and acidic gas, applied in the field of air purification, can solve the problems of difficult formation of water mist, excessive air discharge, loud noise, etc., and achieve the effect of fine and uniform water column, efficient purification function, and large purification volume

Inactive Publication Date: 2012-12-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many patents related to the absorption method to purify indoor air. The Chinese invention patent "Environmental Protection Air Purifier" (application number 99240594.7, publication number CN2418941) is mainly used in streets, highways and other places, with high noise and high energy consumption.
The Chinese invention patent "Spray Air Purifier" (application number 00231326.X, publication number CN2413780) is characterized by the fact that water mist is difficult to form, and the small amount of water mist formed is easily carried out by the gas and the purification is not thorough
In addition, in the process of spraying and purifying the air, the direction of the air and the degree of divergence have not been paid attention to. Generally, the direction of the air is only to directly pass the air into the container and discharge it directly after contacting the treatment liquid, which leads to the air not being able to Evenly spread out to make the air fully contact with the treatment liquid, so that the treatment effect is not ideal and the efficiency is not high; another method is to let the air pass through a relatively complicated pipeline and then be discharged from many small holes in the pipeline, which causes the device itself The structure is complex, it is not easy to manufacture and operate, and the speed of air discharge from the hole is not easy to grasp, the air discharge is too fast, the air does not have enough time to contact with the treatment liquid, and the air discharge is too slow, resulting in too slow speed

Method used

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  • Apparatus for removing trace acidic gas in indoor air, and method and application thereof
  • Apparatus for removing trace acidic gas in indoor air, and method and application thereof
  • Apparatus for removing trace acidic gas in indoor air, and method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Such as figure 1 As shown, a device for removing trace acid gases in indoor air includes a spray bed reaction system, an aerodynamic system and an absorption liquid circulation system.

[0055] The spray bed reaction system includes a bed cylinder (26), flange piece a (3), flange piece b (6) and flange piece c (12) made of stainless steel, and the bed cylinder body (26) is a hollow column Body, including the cylinder cavity, cylinder body, cylinder bottom and cylinder top, the cylinder cavity inner diameter is 120mm, the cylinder body height is 300mm, the wall thickness of the bed cylinder (26) is 3mm, and the open end of the cylinder top is integrated with the flange b (6) Connection, the open end of the bottom of the cylinder is integrally connected with the flange piece c (12); the height of the cylinder cavity from the bottom of the cylinder is 50mm, and the disc (30) is arranged between the disk and the flange piece c (12) at the bottom of the cylinder. Cavity, th...

Embodiment 2

[0061] (1) The device for removing trace acid gases in indoor air described in Example 1 is installed in a space with a volume of 30m 3 room, the indoor and outdoor gas exchange volume is 5m 3 / h, acidic pollutants are mainly SO 2 and NO 2 , the initial concentration of SO2 and NO2 is 100ppb and 100ppm respectively, and the concentration of acid gas is detected by the concentration monitor of SO2 and NO2 respectively;

[0062] (2) Add 20g of sodium carbonate powder through the absorption liquid supplement port (2) of the device described in step (1), and then add 6L of water, the initial concentration of the absorption liquid is 0.03mol / L;

[0063] (3) Turn on the power and turn on the fan (10) and the submersible pump (18), wherein the speed of air passing through the cylinder chamber (that is, the amount of purified air) is 30m 3 / h; the flow rate of the absorption liquid sprayed from the nozzle of the liquid sprinkler is 1600L / h.

[0064] Indoor NO after 1 hour after st...

Embodiment 3

[0066] (1) The device for removing trace acid gases in indoor air described in Example 1 is installed in a space with a volume of 60m 3 room, the indoor and outdoor gas exchange volume is 5m 3 / h, acidic pollutants are mainly SO 2 and NO 2 , initial SO 2 and NO 2 The concentration of acid gas is 100ppb and 100ppm respectively, and the concentration of acid gas is detected by the concentration monitor of SO2 and NO2 respectively;

[0067] (2) Add 20g of sodium carbonate powder through the absorption liquid replenishment port (2) of the device described in step (1), and then add 6L of water, the initial concentration of the absorption liquid is 0.03mol / L;

[0068] (3) Turn on the power, turn on the fan (10) and the submersible pump (18), and the speed of air passing through the cylinder cavity (that is, the amount of purified air) is 40m 3 / h; the flow rate of the absorption liquid sprayed from the nozzle of the liquid sprinkler is 1600L / h.

[0069] 2 hours after starting ...

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Abstract

The invention discloses an apparatus for removing trace acidic gas in indoor air, and a method and an application thereof. The apparatus provided by the invention comprises a spray bed reaction system, an air power system and an absorption liquid circulating system, and the three systems are integrally connected, wherein the spray bed reaction system comprises a bed cylinder, the air power system comprises a fan, an air inlet pipe and an air outlet, and the absorption liquid circulating system comprises a liquid spray thrower, an absorption liquid circulating pipe, an absorption liquid storage tank and a submersible pump. After starting the fan and the submersible pump of the apparatus, air passes through cylinder chamber of the bed cylinder from bottom to top, and meanwhile contacts with the absorption liquid sprayed from top to bottom, so that the air is absorbed and purified. The apparatus for removing the trace acidic gas in the indoor air has advantages of compact structure, small volume, low noise, easy installation, low energy consumption and excellent purifying effect.

Description

technical field [0001] The invention belongs to the field of air purification, and in particular relates to a device for removing trace acid gases in indoor air, a method and an application thereof. Background technique [0002] Most people spend 80% of their time indoors, and the degree of indoor air pollution is 5-10 times greater than that of outdoors. The main indoor acid pollutant is SO 2 and NO 2 , SO in indoor air 2 It mainly comes from the incomplete combustion of coal and tobacco. A large number of epidemiological investigations have shown that indoor SO 2 The concentration is significantly higher than that of gas households, the kitchen is higher than the bedroom, the winter is higher than the summer, and the north is higher than the south. SO 2 It is highly pungent and irritating to the conjunctiva and upper respiratory tract mucosa, when SO 2 Concentration at 0.9mg / m 3 It can be smelled by most people when it is absorbed by the human body, and it will mainl...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/60F24F6/14
Inventor 解东来温明霞
Owner SOUTH CHINA UNIV OF TECH
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