Process for obtaining an ethane-rich fraction for refilling an ethane-containing refrigerant circuit of a process for liquefaction of a hydrocarbon-rich fraction
US5588306A · kind A · utility
7Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1995 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Nov 9, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2215/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An ethane-rich fraction for refilling the refrigerant circuit, using an ethane-containing refrigerant in a process for liquefaction of a hydrocarbon-rich fraction, is obtained by removing a partial flow of liquefied hydrocarbon-rich fraction and supplying same to a C.sub.1 /C.sub.2 /C.sub.3+ separation column. Roughly in the middle of this C.sub.1 /C.sub.2 /C.sub.3+ separation column, an ethane-rich fraction is withdrawn and, optionally after intermediate storage in a buffer tank, is added to the ethane-containing refrigerant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.