Effective method for industrial fluorinion-containing waste gas treatment

Abstract

The invention relates to a novel method for an industrial fluorinion-containing waste gas treatment system during the solar battery production process in the photovoltaic industry, which mainly consists of 18 parts of a primary purification kettle, a final purification kettle, a tube between the kettles, a waste gas input tube, a purified gas tube, an alkali aqueous solution, a basic solvent trough, a centrifugal fan and the like. The negative pressure is produced at the inlet of the centrifugal fan, so the industrial fluorinion-containing waste gas and the alkali aqueous solution carry out neutralization reaction in the primary purification kettle and the final purification kettle which are connected through the tube between the kettles, and the fluorinion in the waste gas is entrapped and collected. The industrial fluorinion-containing waste gas which is treated by the method not only can reach the national emission standard, but also can satisfy the emission requirement which is specified by national standards even if the industrial production is abnormal, and the operation method of the system is simple, parts are not easy to damage, the maintenance and the management are easy, and the waste gas treatment cost is also reduced to some extent.

Description

technical field [0001] The present invention is a new method for treating waste gas containing industrial fluorine ions in the production process of solar cells in the photovoltaic industry, specifically an effective method for treating waste gas containing industrial fluorine ions Background technique [0002] The texturing and cleaning process in the production process of crystalline silicon solar cells is a place where hydrofluoric acid is used more intensively. The exhaust pipe above the texturing and cleaning tank cabinet will suck away the vapor of a large amount of fluorine ions in the hydrofluoric acid, and then It is sent to the acid mist tower for treatment and then discharged into the atmosphere. Hydrofluoric acid contains a large amount of fluoride ion, which is a very harmful element to the environment and is a pollutant of the atmosphere and water. After fluoride ions invade the human body, they will be deposited in teeth and bones, and the degree of harm is m...

AI Technical Summary

Problems solved by technology

Since most of the fillers in the filler layer are grid plastic balls of different shapes, although the exhaust gas will be disturbed by the combination of filler and spraying during the discharge process, there will still be a lot of untreated exhaust gas that can easily pass through the filler. The grid gap between the sprayed alkaline solution and the gap between the water droplets is also very large. The density of the alkaline solution water droplets is not uniform. Exhausted into the atmosphere with the exhaust gas

Images