| Mixed refrigerant composition (%, mol) | Refrigerant circulation amount (kmol/h) | Total energy (10e+07 kJ/h) | |||||
CH4 | C2H6 | C3H8 | i-C4H10 | n-C4H10 | N2 | |||
1st | 70 | 10 | 10 | 3.60 | 3.40 | 3.00 | 78,650 | 78.6 |
2nd | 60 | 15 | 15 | 4.60 | 3.40 | 2.00 | 25,470 | 54.4 |
3rd | 50 | 15 | 25 | 4.60 | 3.40 | 2.00 | 17,560 | 30.7 |
4th | 40 | 25 | 25 | 4.60 | 3.40 | 2.00 | 10,420 | 27.5 |
5th | 30 | 38 | 22 | 4.60 | 3.40 | 2.00 | 7850 | 24.2 |
6th | 33 | 35 | 22 | 4.60 | 3.40 | 2.00 | 6290 | 17.3 |