US 11,697,773 B1
Recovering gaseous hydrocarbons from tank headspace
Darren Schmidt, Williston, ND (US)
Assigned to Energy and Environmental Research Center Foundation, Grand Forks, ND (US)
Filed by Energy and Environmental Research Center Foundation, Grand Forks, ND (US)
Filed on Oct. 18, 2022, as Appl. No. 18/47,378.
Application 18/047,378 is a continuation of application No. 17/811,016, filed on Jul. 6, 2022, granted, now 11,505,750.
Int. Cl. C10G 5/06 (2006.01); C10G 31/06 (2006.01)
CPC C10G 5/06 (2013.01) [C10G 2300/4012 (2013.01); C10G 2400/28 (2013.01)] 20 Claims
 
1. An apparatus for recovering gaseous hydrocarbons from tank headspace, the apparatus comprising:
a compressor that accepts a hydrocarbon gas composition from headspace of a tank fed by a separator, wherein the separator accepts a crude hydrocarbon input stream and outputs a crude liquid hydrocarbon stream to the tank;
a cooling unit that accepts that compressed mixture from the compressor and that forms a cooled composition comprising liquid hydrocarbons; and
a flowline from the cooling unit for recovering the liquid hydrocarbons as a recovered liquid hydrocarbon stream.