Method and apparatus for multi-component fractionation
A fractionation method is described comprising passing a feedstream to be fractionated to a first fractionator and (a) withdrawing bottoms product from the first fractionator and introducing the withdrawn bottoms product into a second fractionator operating in a predetermined moderate pressure range sufficient to provide integration of the second fractionator with the first fractionator and to allow transfer of overhead product from the second fractionator into a stripper zone and thereafter into the first fractionator; (b) separating the withdrawn bottoms product into relatively light ends and relatively heavy ends by introducing stripping vapor into the second fractionator; (c) introducing a controlled stream of light product quench comprising bottoms product from the stripper zone at a predetermined low temperature and variable flow rate into the second fractionator to adjust an end point of overhead products existing the second fractionator; (d) passing the overhead products exiting the second fractionator into the stripper and introducing relatively lighter product components from the first fractionator into the stripper zone, the overhead products from the second fractionator stripping light ends from the relatively lighter product components; and (e) separating overhead product from the stripper zone into relatively light ends and relatively heavy ends by introducing overhead product from the stripper into the first fractionator, such that the stripper overhead product is further fractionated in the first fractionator.
- Assignee:
- Mobil Oil Corp., New York, NY
- Patent Number(s):
- US 4606816
- OSTI ID:
- 5212554
- Resource Relation:
- Patent File Date: Filed date 31 Dec 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PETROLEUM
FRACTIONATION
FLOW RATE
PRESSURE CONTROL
SEPARATION EQUIPMENT
STEAM STRIPPING
TEMPERATURE CONTROL
VAPORS
CONTROL
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
MANAGEMENT
PROCESSING
SEPARATION PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WATER TREATMENT
020400* - Petroleum- Processing