Reverse Brayton LNG production process
US12025370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2022 |
| Grant date | Jul 2, 2024 |
| Priority date | — |
| Expiry date | Oct 14, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Described herein are methods and systems for producing a liquefied natural gas (LNG) product by cooling and liquefying a natural gas stream via indirect heat exchange with a gaseous refrigerant and then flashing and separating the liquefied natural gas stream to obtain the LNG product. In particular, the gaseous refrigerant may be a refrigerant circulating in a reverse Brayton cycle. The gaseous refrigerant is warmed in the shell side first, second and third coil-wound heat exchanger sections each having a tube side and a shell side, the shell side of the first coil-wound heat exchanger section being separated from and operating at a different pressure to the shell side of the second and third coil-wound heat exchanger sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.