SU659842A1 - Method of cleaning air from inductrial pollution - Google Patents

Description

l CTS suspension caught dust. A solution of the solution is periodically or uninterruptedly in order to avoid oversaturation of the circulating solution with ammonium salts, and the output of the cycle volume is filled with fresh water. The excreted ammonium salt solution and the suspension of the captured dust are directed to use as components of agricultural fertilizers.

During the first rinsing, the air is practically deoderated (indole, skatole and other lacrimators are oxidized by ozone).

In the case of hardening, a swarm of washing and oxidation is acidified and organically impurities are completely captured, carbon dioxide is collected by the flushing solution and carbon dioxide is lost by impurities from the initial oxidation and washing process. The washing is carried out with an aqueous solution containing 3-5 ve. % sodium carbonate and 1--3 all. % sodium hydroxide. This solution also circulates in a closed loop. A part of the solution is periodically or continuously withdrawn with the replacement of the extracted volume with a superfluous M solution of sodium hydroxide such a co-center :), the content of the hydroxide in the circulating solution was -3 weight. % Derivative soda-alkali (S11 solution is used on the plant for irigo: h) following various rsc lsrop detergents.

npj: treatment of scum air and solid (Ozone decomposition catalyst, the possible excess ozone is destroyed with a decrease in its content to acceptable standards.

The drawing shows the installation diagram for the implementation of the described method.

The installation contains a fan 1, a washer 2, a heat exchanger-condenser 3, a second washer 4, a second heat exchanger-condenser 5, contact annarate 6, a sump tank 7, a fill 8, a second sump tank 5 and the second pump W.

The described method is performed on the installation as follows.

Example 1. Purified air (emission from the house), containing, hydrogen sulfide 0.15, ammonia 0.11, carbon dioxide 14, eyly 14, organic matter (thio-compound, skatole, indole) 0.2, methanol 0.1, take it from placed by the fan /, in the same fan, ozone-free-air air containing 11.3 in an amount of 0.1 lg per 1 m of purified air is supplied to the cleaned-air line. From the fan / mixture of purified air e ozonated (hereinafter referred to as purified air) is put into the washing device 2, where it moves towards the washing solution, which is an aqueous solution of sulfate, nitrates, ammonium carbonate

ammonium salts 14 weight. %

The washing solution coming out of the washing unit 2 of the device 2 is collected in a sump 7, from which it is taken by pump 8 or by a transport device and fed to the heat exchanger 3, which is passed through to the washing device 2.

The heated air from the washing device 2 enters the heat exchanger-condenser 3, in which it is separated from the spray of the sprayer solution and partially dried. Spray condensate of the washing solution and moisture from the heat-exchanger co-cleaner 3 is returned to the washing device 2.

From the heat exchanger-co-generator 3, the air enters the second washing device 4, where simultaneously ozonized air is supplied together with the incoming air, containing pz. 3 mg l. Of ozone in the amount of 0.125 m. The cleaned air in the washing device 4 moves towards the washing solution containing the 4th air. % carbonate and sodium and 2 wt. % hydroxide Igggri.

The washing solution from the washing device 4 is collected in the second storage tank 9, from which it is taken up by the second pump 10 or by its own transport device and is fed to the second tenol-exchange condenser 5, and the lead which is loaded into the washing device 4.

The cleaned air from the washing device 4 enters the mixing capacitor 5, in which it is centrified from splashes of the washing liquid and dried. Spray condensate of the washing solution and moisture from the heat exchanger-condenser 5 return to the washing device 4.

From the heat exchanger-condenser 5, the purified air enters the contact annarate 6, where it is purified from excess ozone on a solid catalyst.

In purified air, there is mg / l of ammonia: 0.004 ammonia, 0.0002 hydrogen sulfide, carbon dioxide 1, there are no organic substances in it, it does not smell, its humidity is 78%, the temperature is 17 ° C, its oxygen content is 21, 3 about %

The pathogen microflora and nosnel infections in the air are practically absent.

Example 2. The cleaned source air is the same as in irimer 1; the purification process is carried out in the same way as in irimer 1; ozonized oxygen with 56 mg / l ozone is used instead of ozonized air.

The amount of ozonized oxygen supplied to the air line to be cleaned by the fan / is 1, 0.020 m and 1 m of air to be cleaned, and that supplied to the air being cleaned at no time at the washing station, is 0.25 m per 1 m of registered air.

Ammonia 0.001, hydrogen sulfide 0.0004, carbon dioxide 2, organic matter and odor are absent in the purified air.

Its oxygen content is 21.4 vol. %, its humidity is 73%, temperature is 19 ° C.

Pathogenic microflora and carriers of air infection B are practically absent.

The use of a method for cleaning ventilation air discharged from poultry houses allows the use of purified air in a closed loop to provide poultry houses with air; reduce by more than 50% of the heat consumption for heating the air during the cold season; dispose of impurities discharged with polluted air as useful products; to completely eliminate the environmental pollution by toxic gas emissions from the house; exclude special operations for disinfecting air supplied to poultry houses.

Claims (4)

Invention Formula The method of air purification from industrial pollution, mainly in poultry farms, by washing it with aqueous solutions of salts and treatment with an oxidizing agent, so that in order to increase the cleaning efficiency and at the same time disinfect it, the air is washed with salt solutions and the oxidizing agent in stages, first 10–20 wt. % solutions of ammonium sulfate and nitrate, and then solutions containing, wt. %: 3-5 carbonate and 1-3 sodium hydroxide, ozonized gas is injected into the air before each wash, and after the final treatment of the air, the excess ozone contained in the letters is removed using solid catalysts. 2. A method according to claim 1, characterized in that ozone is used as ozonized gas, which is introduced into the air in amounts of 7-8 wt. h. on 1 weight. including hydrogen sulfide present in the air before the first wash, and 14-15 wt. hours by weight h, organic substances present in the air in the form of vapor and gas before the second wash. 3. The method according to claim 1, wherein the fact that ozonized air is used as ozonized gas PS, which is introduced into the purified air in amounts of 0.1 U before the first flush, and before the second 0.125 m per 1 m of purified air. 4. A method according to claim 1, characterized in that oxygen is used as an ozonized gas, which is introduced into the air in amounts before the first washing with 0.02 .11 and before the second - 0.025 m per 1 m cleaned air. The source of information irinigated when examining: 1. USSR author's certificate L 334441, cl. F 24 F 3/16, 1970.