New French gas cooler recovers 120 bpd gasoline
A French design for a gas cooler recovers over 100 bbl of gasoline per day from a 7 MMcfd flow stream. The unit consists of 2 in-series heat exchangers, slanted so that condensate flows by gravity into a collecting reservoir, and 2 cooling heads arranged in parallel. Gas from separators enters tubes of Exchanger l at about 80 psi, 120/sup 0/F; it is cooled by low-temperature dry gas from Exchange 2, passing through the shell; water and gasoline are condensed and drained by gravity. Second-stage cooling in Exchanger 2 lowers temperature to about 40/sup 0/F. A portion of the hot gas goes at regular intervals through a heating coil in the second stage liquid to prevent hydrate formation. The water then goes back into the shell side of Exchanger, where it revaporizes. The residual pressure of about 22 psi is sufficient to force the gasoline into tanks. A feature of the assembly is the thermal separator head. This consists of several receiving tubes, an injector nozzle, resonator chambers (acting as switching valves), and cold gas outlet. Inlet gas goes in turn from the nozzle into one or another of the several receiving tubes, compressing and heating residual gas in the end chamber. The high velocity stream is then diverted into another tube, and the first tube radiates heat out and bleeds the gas back, with additional expansion cooling.
- OSTI ID:
- 6884499
- Journal Information:
- World Oil; (United States), Vol. 177:2
- Country of Publication:
- United States
- Language:
- English
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