Patent ID: 7883569

Claim:
A process comprising: obtaining produced gas from a source of produced gas, said produced gas including hydrocarbon gas and at least one waste gas; dehydrating said produced gas to form dehydrated produced gas; cooling said dehydrated produced gas in a heat exchanger; fractionating said dehydrated produced gas into a first stream containing said hydrocarbon gas and a portion of said at least one waste gas and a second stream comprising the remainder of said at least one waste gas; processing said first stream to separate said at least one waste gas from said hydrocarbon gas to form hydrocarbon gas and a separated waste gas and returning said separated waste gas through said heat exchanger for exchanging heat with at least said dehydrated produced gas; and supplying said separated waste gas from said heat exchanger for incorporation with said produced gas being fractionated; combining at least a portion of said separated waste gas with said remainder of said at least one waste gas and forming therewith a waste liquid stream; supplying said hydrocarbon gas after separation from said at least one waste gas as an output; and supplying said waste liquid stream as an output.