Process for liquefaction of natural gas
US5551256A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1995 |
| Grant date | Sep 3, 1996 |
| Priority date | — |
| Expiry date | Nov 9, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S62/912
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pressurized natural gas flow, from which CO.sub.2 and H.sub.2 O are first removed using an adsorptive separation device, is subjected to liquefaction. The pre-purified natural gas flow is brought into heat exchange with at least one refrigerant routed in a refrigeration circuit and liquefied. The adsorptive separation device is regenerated by means of a regeneration gas containing a partial flow of the pre-purified natural gas flow and optionally additional residual gas flows such as a flash gas flow. During the cooling and liquefaction process of the natural gas flow at least the partial natural gas flow needed-for regeneration of the adsorptive separation device is separated when the temperature of the partial flow is such that the efficiency of cold use can be maximized by throttling to the regeneration gas pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.