Patent ID: 6986803

Claim:
Process for cleaning contaminants from a gas stream of flowing gas, which said gas may be air, and which said contaminants may be particulates and may be gaseous contaminants, comprising the steps of: (a) Intimately mixing said gas stream with a copious quantity of positively charged liquid droplets, hereafter “positive droplets”, by injecting said positive droplets into said gas stream, and by providing said positive droplets with a combination of size, charge magnitude, positive droplet production rate and length of travel of said positive droplets in said gas, so as to cause said positive droplets to adsorb at least about 99% of said contaminants which are said particulates initially having negative charges, and at least about 90% of said particulates which are initially neutral, and to absorb at least about 90% of said contaminants which are said gaseous contaminants; (b) Removing at least about 99% of said positive droplets having diameters greater than 50 microns from said gas stream, along with all of said contaminants which have been adsorbed and absorbed by said positive droplets; (c) Positively charging at least about 99.9% of said particulates which were neutral at inception of said positive charging of said particulates; (d) Intimately mixing said gas stream with a copious quantity of negatively charged liquid droplets, hereafter “negative droplets”, by injecting said negative droplets into said gas stream, and by providing said negative droplets with a combination of size, charge magnitude, negative droplet production rate and length of travel of said negative droplets in said gas, so as to cause said negative droplets to adsorb at least about 99.9% of said contaminants which are said particulates having positive charges; and (e) Removing at least about 99.9% of said negative droplets from said gas stream, along with all of said contaminants which have been adsorbed and absorbed by said negative droplets.