Patent ID: 7169210

Claim:
A gas recycling system comprising: a) a source of gas having a predetermined purity ( 28 ); b) an application system ( 6 ) that uses said gas and adds contaminants to said gas; c) an adsorption system ( 1 ) for removing said contaminants from said gas to produce a purified gas and a waste gas; d) a gas purity analyzer ( 100 ) for measuring the amount of said contaminants in said waste gas; e) conduits ( 5 ), ( 8 ), ( 9 ), ( 13 ) and ( 15 ) connecting the gas source ( 4 ) to said application system and said application system ( 6 ) to said adsorption system; f) a membrane ( 24 ) connected to said adsorption system ( 1 ), such that said waste gas is passed through said membrane ( 24 ) to produce a gas having reduced amounts of contaminants and a gas having a higher concentration of contaminants; and g) conduits ( 25 ) for feeding said gas having reduced contaminants to said adsorption system ( 1 ).