APPARATUS AND METHOD FOR LIQUEFYING FEED STREAM USING MIXTURE REFRIGERANTS, AND SYSTEM FOR TRANSFERRING THAT APPARATUS

摘要

PURPOSE: A liquefying apparatus and method of feed stream using refrigerant mixture, and transferring apparatus system thereof are provided to prevent environmental contamination by liquefying feed stream using the second refrigerant which has higher boiling point than the first refrigerant and the first refrigerant including hydrocarbon materials. CONSTITUTION: A liquefying apparatus and method of feed stream using refrigerant mixture, and transferring apparatus system thereof comprise the first compression unit(210), the first heat exchanger(220), the second heat exchanger(230), the second compression unit(240), and the third compression unit(250).The first compression unit compresses the feed stream of the weather to target pressurize the feed stream of weather. The first heat exchanger liquefies the feed stream of weather to feed stream of liquid using the first refrigerant liquid and the second refrigerant liquid. The second compression unit compresses the first refrigerant outputted from the first heat exchanger. The second heat exchanger liquefies the compressed first refrigerant to the first refrigerant liquid by using the second refrigerant liquid. The third compression unit liquefies the second refrigerant outputted by the second heat exchanger to the second refrigerant liquid by compressing and refrigerating. The second refrigerant liquid cools the feed stream to the first temperature. The first refrigerant liquid cools the feed stream into the second temperature which is lower than the first temperature. [Reference numerals] (210) First compression unit; (220) First heat exchanger; (230) Second heat exchanger; (240) Second compression unit; (250) Third compression unit; (260) First valve; (270) Second valve; (280) Solid-liquid separator for recirculation; (290) Third valve; (AA) Gaseous feed stream; (BB) Liquefied feed stream