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Priority claimed from US08/289,862external-prioritypatent/US5497626A/en
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Publication of TW250536BpublicationCriticalpatent/TW250536B/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Refrigeration is provided in an ethylene recovery plant by an openloop mixed refrigeration cycle which utilizes components present in the ethylene-containing feed gas as the mixed refrigerant. Refrigeration is provided by subcooled mixed refrigerant at -175 deg.F to -225 deg.F for the demethanizer overhead condenser and for initial cooling and condensation of the ethylene-containing feed gas. Overall ethylene recoveries of up to 99.9% can be achieved at reduced power consumption compared with conventional ethylene recovery cycles. In addition, significant capital savings can be realized due to the simplification of equipment with the open-loop mixed refrigerant cycle, which can be operated advantageously at pressures between 150 and 400 psia.
TW083109485A1994-08-121994-10-13Open loop mixed refrigerant cycle for ethylene recovery
TW250536B
(en)