REFINING SYSTEM AND METHOD FOR REFINING A FEED GAS STREAM

摘要

Refining system for refining a feed gas (10) comprising a first and a second component, the first component having a lower dew point temperature than the second component; the refining system comprising: - an input section (105) for input of the feed gas comprising a dehydration unit for dehydrating the feed gas, capable of obtaining a water dew point between -45 and -65 °C; - a pre-cooling section (110) coupled to the input section for receiving the dehydrated feed gas; - a fractionation section (115) coupled to the pre-cooling section for receiving the pre-cooled stream; - an expansion cooling and separation section (120) coupled to the fractionation section for receiving the fractionated gas, comprising a cyclonic separator device (240); the expansion cooling and separation section having an reflux conduit coupled to the fractionation section for reflux (24) of liquid enriched with the second component to the fractionation section.