Industries and power plants produce distinguished gasses, during certain chemical processes and waste disposal, which contain toxic gasses such as sulfuric acid and hydrochloric acid, in addition to it also contains various heavy metals. These gasses are often termed as flue gas; various methods are used in order to remove dangerous pollutants from this. After proper treatment it is exhausted out of the plant; however it stills contains several matters in small volume. Flue gas treatment is mandatory as it contains harmful gasses; majority of nations are strictly following eco friendly norms, which are specially designed for protecting environment against harmful gasses. Therefore it’s compulsory to treat it before draining outside, taking into consideration all the necessary standards.
Certain chemical processes remove pollutants from it, in accordance with scrubbers. High catalytic reaction is used for removing nitrogen oxide from it, with relevant modification in combustion process one can also eradicate nitrogen by disallowing its formation. Fine particles are removed by precipitator that separated fine particles from it. In dry Flue gas treatment a chemical is injected in to the gas for removal of harmful gasses, the residue obtained is further removed by precipitator. This method is economical and flexible with temperature and it is not complex.
Wet process effectively eradicate toxic elements from flue gas, mostly lime and sodium bicarbonate is used in both dry and wet processes, once the gas is cleaned then it is expelled outside.
