Method for liquefying natural gas and nitrogen
US10890375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2016 |
| Grant date | Jan 12, 2021 |
| Priority date | — |
| Expiry date | Mar 23, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2270/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for producing liquefied natural gas and a stream of liquid nitrogen including step a): producing gaseous nitrogen in an air separation unit; step b): liquefying a stream of natural gas in a natural gas liquefaction unit including a main heat exchanger and a system for producing cold; step c): liquefying the nitrogen stream resulting from step a) in the main exchanger of the natural gas liquefaction unit in parallel with the liquefied natural gas in step b); wherein all the cold necessary for liquefying the stream of nitrogen and for liquefying the natural gas is supplied by the system for producing cold of the natural gas liquefaction unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.