| 摘要 |
A process is described for cooling a hydrocarbon-rich fraction, in particular natural gas, against a refrigerant circuit. In this process, the compressed refrigerant is divided into three refrigerant substreams (4, 8, 10). Whereas the first substream (4) is work-producingly expanded in a warm expander (Xl) and the second substream (8) is work-producingly expanded in a cold expander (X2), the third substream (10) is work-producingly expanded (V1) at the lowest temperature level. The result therefrom is that the operating point of the cold expander is shifted in such a manner that the refrigeration output of the two expanders (X1, X2) is situated in a ratio between 40/60 and 60/40. (Figure 1 belongs thereto.) 3<C < 4> x I. X2 4 'F K' ' 1' f - A,41 .- 4 |
