Title:
SEPARATION OF ETHYLENE CONTAINING HYDROCARBON MIXTURE BY LOW TEMPERATURE RECTIFICATION
Document Type and Number:
Japanese Patent JPS5452009
Kind Code:
A
Abstract:
In a low temperature rectification process for the separation of ethylene from a mixture of ethylene and ethane comprising separating the ethylene-containing mixture into a liquid reboiler fraction enriched in ethane and a gaseous head fraction enriched in ethylene; heating and compressing the head fraction; partially liquefying resultant compressed gaseous head fraction in indirect heat exchange with the reboiler fraction; expanding and recycling resultant condensed head fraction in part as reflux to the rectification; and withdrawing in part resultant condensed fraction as product ethylene, the improvement which comprises heating the liquid reboiler fraction, in part, in indirect heat exchange with a closed refrigerantion cycle, e.g., an ethylene cycle.
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Inventors:
SHIYUSUTAA ROBERUTO
Application Number:
JP9515978A
Publication Date:
April 24, 1979
Filing Date:
August 04, 1978
Export Citation:
Assignee:
LINDE AG
International Classes:
C07C1/00; C07C7/04; C07C7/09; B01D5/00; C07C11/04; C07C67/00; F25J3/02; (IPC1-7): B01D5/00; C07C7/00; C07C11/04