CPC C10G 5/06 (2013.01) [C10G 2300/4012 (2013.01); C10G 2400/28 (2013.01)] | 20 Claims |
1. A method of recovering gaseous hydrocarbons from tank headspace as fuel on-site, the method comprising:
flowing a hydrocarbon gas composition from headspace of a tank fed by a secondary separator into a compressor to form a compressed mixture, wherein the secondary separator accepts a crude liquid hydrocarbon input stream from a primary separator, wherein the primary separator comprises a crude hydrocarbon input stream and comprises an output stream comprising the crude liquid hydrocarbon stream that is inputted to the secondary separator;
flowing the compressed mixture into a cooling unit to cool the compressed mixture, to form a cooled composition comprising liquid hydrocarbons;
flowing the cooled composition to a buffer tank to form a buffered fuel composition;
removing a fuel gas composition from headspace of the buffer tank; and
combusting the fuel gas composition as an on-site fuel.
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