Process for selectively separating petroleum fractions

Details Process for selectively separating petroleum fractions Process for selectively separating petroleum fractions

1985-06-21

1987-02-24

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 28, 62 38, F25J 300

Patent

active

046455221

ABSTRACT:
Pressure energy in a petroleum reservoir is not wasted, but used for cooling the gas/liquid mixture through expansion in turbo-expanders (5, 6). The power generated thereby is used for recompression of the gas or for other power needs. This saves Freon cooling apparatus, compressors for recompressing the cooling fluid, drive motors and power for driving them (e.g. fuel gas at an off-shore site), space and weight. In an alternative embodiment the process uses stripping-reboiling whereby again the amount of compression may be reduced as well as a higher yield of selected heavy hydrocarbons is obtained.

REFERENCES:
patent: 4155729 (1979-05-01), Gray et al.
patent: 4453956 (1984-06-01), Fabbri et al.
patent: 4456461 (1984-06-01), Perez

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