Integrated nitrogen removal in the production of liquefied natural gas using refrigerated heat pump
US9945604B2 · kind B2 · utility
6Cited by
13References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2014 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Nov 20, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/66
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for liquefying a natural gas feed stream and removing nitrogen therefrom, the method comprising passing a natural gas feed stream through a main heat exchanger to produce a first LNG stream, and separating a liquefied or partially liquefied natural gas stream in a distillation column to form nitrogen-rich vapor product, wherein a closed loop refrigeration system provides refrigeration to the main heat exchanger and to a condenser heat exchanger that provides reflux to the distillation column.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.