Process for separation of hydrocarbon gases

Patent · Tue Dec 08 04:00:00 EST 1987

OSTI ID:5309024

Sharma, S; Hill, D K; Durr, C A

A process for separation of a high pressure gaseous stream containing mixed light hydrocarbons is described which comprises: (a) cooling the high pressure gaseous stream and introducing the resulting cooled high pressure stream to a first, single equilibrium, separation zone; (b) recovering a first vapor stream and a separate first liquid stream from the first, single equilibrium, separation zone; (c)expanding the first liquid stream to form a first intermediate pressure stream; (d) cooling the first vapor stream and introducing the resulting cooled stream to a second, single equilibrium, separation zone operated at substantially the same pressure as the first, single equilibrium, separation zone; (e) recovering a second liquid stream from the second, single equilibrium, separation zone; (f) expanding at least a major portion of the second liquid stream to form a second intermediate pressure stream; (g) combining the first and second intermediate pressure streams to form a mixed intermediate pressure stream; and (h) recovering refrigeration from at least a portion of the mixed intermediate pressure stream.

• Assignee: M.W. Kellog Co., Houston, TX
• Patent Number(s): US 4711651
• OSTI ID: 5309024
• Country of Publication: United States
• Language: English

Related Subjects

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& Utilization-- Buildings
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
COMPRESSED GASES
COOLING
ENERGY RECOVERY
EVAPORATION
EXPANSION
FLUIDS
GASES
HEAT RECOVERY
HYDROCARBONS
ORGANIC COMPOUNDS
PHASE TRANSFORMATIONS
RECOVERY
REFRIGERATION
SEPARATION PROCESSES
VAPORS