Systems and methods for LNG refrigeration and liquefaction
US12313337B2 · kind B2 · utility
0Cited by
7References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 8, 2019 |
| Grant date | May 27, 2025 |
| Priority date | — |
| Expiry date | Oct 4, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A LNG liquefaction plant system includes concurrent power production, wherein the refrigeration content of the refrigerant or SMR is used to liquefy and sub-cool a natural gas stream in a cold box or cryogenic exchanger. For concurrent power production, the system uses waste heat from refrigerant compression to vaporize and superheat a waste heat working fluid that in turn drives a compressor for refrigerant compression. The refrigerant may be an external SMR or an internal LNG refrigerant working fluid expanded and compressed by a twin compander arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.