DE2053244

Process for the removal of methane from a hydrocarbon feed containing ethylene, methane and higher boiling hydrocarbons with minimum loss of ethylene. Methane is separated overhead from the feed in a separation zone at a first lower pressure; a first portion of this overhead vapor is expanded throug...

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Bibliographic Details
Main Authors FREIREICH, ERNEST, LOS ANGELES, JACKSON, STEVEN BOYD, FULLERTON, HAMMOND, JAMES DAVID, ALHAMBRA
Format Patent
LanguageEnglish
Published 07.08.1975
Edition2
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
BLASTING
CHEMISTRY
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
METALLURGY
MIXTURES BY PRESSURE AND COLD TREATMENT
ORGANIC CHEMISTRY
REFRIGERATION OR COOLING
WEAPONS
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Summary:Process for the removal of methane from a hydrocarbon feed containing ethylene, methane and higher boiling hydrocarbons with minimum loss of ethylene. Methane is separated overhead from the feed in a separation zone at a first lower pressure; a first portion of this overhead vapor is expanded through an expansion motor producing an energy output, a second portion of the overhead vapor is compressed to a second pressure greater than the first pressure in a compressor driven by the motor output. The compressed vapor portion is then cooled to condense the major portion of the methane and the condensed methane is returned to the separation zone as reflux and recovering ethylene as bottoms from the separation zone. The methane vapor is recovered as fuel gas.
Bibliography:Application Number: DE19702053244