| 摘要 |
Abstract Process for liquefying a hydrocarbon-rich fraction Process for liquefying a hydrocarbon-rich fraction, in particular natural gas, is described, in which 5 - the hydrocarbon-rich fraction that is to be liquefied (A - B) is cooled (ElB - E4B) in indirect heat exchange against a multistage precooling circuit (1 9, 30 -37, 40 - 47), - the refrigerant of the precooling circuit is at least 10 95% by volume carbon dioxide, - the cooled hydrocarbon-rich fraction (C) is liquefied and subcooled (E7, E8, E10) in indirect heat exchange against a mixed cycle (10 - 19), and - the mixed refrigerant of the mixed cycle comprises 15 exclusively the component(s) nitrogen, methane and/or ethane. (Figure 1 is associated therewith) iT, |
