| 摘要 |
Process for producing purified hydrocarbon gas from a gas stream comprising methane and acidic contaminants, which process comprises the steps of cooling the gas stream in a first cooling stage to a first temperature to form a first mixture of solid and/or liquid acidic contaminants and a vapour containing gaseous hydrocarbons and a reduced amount of acidic contaminants; separating the solid and/or liquid acidic contaminants from the first mixture, yielding partly purified gas; cooling the partly purified gas in a second cooling step to a second temperature to form a second mixture comprising purified hydrocarbon gas and further solid and/or liquid acidic contaminants; and separating the further solid and/or liquid acidic contaminants from the second mixture, yielding the purified hydrocarbon gas.
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