Ethane rejection utilizing stripping gas in cryogenic recovery processes

摘要: A process is shown for separating a relatively hot feed gas containing methane, ethane and heavier hydrocarbon constituents into volatile residue primarily liquid bottoms. The cooled to partially condense the form portion which expanded fed fractionating column. flows down column in countercurrent fashion vapors flowing up separate less fraction as side reboiler heats vaporizes of liquids provide stripping flow hot, methane rich entering routed at selected location order raise relative volatility near bottom column, resulting rejection.