NG shall be thoroughly purified before liquefying. That is removing acid gases, moisture and impurities in the raw material gas, such as H2S, CO2, H2O, Hg and aromatic hydrocarbon in case they freeze at low temperature and plug, corrode equipment and pipeline.
♦ Liqufying system of NG–liquefaction plant

♦ Storage system of NG

♦ Filling system

You are always welcome to Suzhou to enquire about technical proposals, equipment selection advice and so on.
(source: https://www.airseparation-plant.cn/introduction-of-pipeline-natural-gas-purification-and-liquefaction-plant/)
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