TECHNIQUE AND EQUIPMENT FOR GAS CLEANING FROM ORGANIC AND INORGANIC ECOLOGICALLY NOXIOUS ADMIXTURES AND WHIFF ODOR
In practice, almost all techniques in such fields as power engineering, ferrous and non-ferrous metallurgy, chemical industry, utilization of domestic and industrial wastes etc., are the sources of enormous quantities of flue gases containing ecologically noxious gaseous admixtures.
We propose a technique based on use of nanosecond pulsed corona discharge for removal of these admixtures from flue gases as well as complete equipment permitting the performance of the cleaning process. We have a 20years experience in the field of R&D of these types of cleaning systems. The technique has been awarded to Bronze medal at the Exhibition "BRUSSELS-EURECA-94", is patented and is realized at a number of Russian industrial enterprises as well as in USA.
Currently mass-produces the installation for cleaning of exhaust gases from gaseous and particulate contaminants. Are in operation more than 40 such installations
BRIEF OUTLINE OF THE CLEANING TECHNIQUE
The process of removal of various inorganic and organic gaseous admixtures from flue gases is realized in a tubular reactor chambers with coaxial arrangement of the electrodes by feeding with very short voltage pulses of high amplitude superimposed on HVDC. The treating of gaseous admixtures is effected while passing of the flue gas through the zone of pulsed corona discharge excited due to action of the pulsed voltage supplied by a special pulsed voltage generator and producing highly active intermediate particles going into radiation-chemical reactions with the molecules of contaminants. These reactions result in the conversion of gaseous admixtures into harmless gaseous substances or into aerosols or solid products. The removal of resulting non-gaseous products runs together with admixtures conversion due to constantly applied electrostatic field by dc voltage.
In process sulphure dioxide converse to sulphuric acid, nitrogen oxide nitric acid respectively. Followed by adding of some quantity of ammonia these processes result in production of ammonium sulphate or ammonium nitrate used as fertilizers.
As for gaseous organic admixtures as a rule, they convert to form primary substances such as CO2 or H2O and in some cases - aerosols of lower organic acids.