Title:
天然ガスを液化するための設備及び方法
Document Type and Number:
Japanese Patent JP6781852
Kind Code:
B2
Abstract:
A technology liquefies natural gas. The natural gas liquefaction method pre-cools treated natural gas by ethane evaporation, sub-cools liquefied gas using cooled nitrogen as a refrigerant, reduces liquefied gas pressure, separates non-liquefied gas and diverts liquefied natural gas. Before pre-cooling the natural gas is compressed, ethane is evaporated during the multi-stage pre-cooling of liquefied gas with simultaneous evaporation of ethane using cooled ethane as a refrigerant. Ethane generated by evaporation is compressed, condensed and used as a refrigerant during the cooling of liquefied gas and nitrogen, with nitrogen being compressed, cooled, expanded and fed to the natural gas sub-cooling stage. The natural gas liquefaction unit contains a natural gas liquefaction circuit, an ethane circuit and a nitrogen circuit. The natural gas liquefaction circuit includes a natural gas compressor, a cooler unit, ethane vaporizers, a closed-end subcooling heat exchanger, and a separator, connected in series.
Inventors:
Minigrove, Lafile Monigrovich
Rudenko, Sergei Vladimir Movich
Basin, Oleg Evgenievich
Grit Shishin, Dmitry Nikolaevich
Sobolev, Evgeny Igorevich
Rudenko, Sergei Vladimir Movich
Basin, Oleg Evgenievich
Grit Shishin, Dmitry Nikolaevich
Sobolev, Evgeny Igorevich
Application Number:
JP2019572340A
Publication Date:
November 04, 2020
Filing Date:
August 10, 2017
Export Citation:
Assignee:
Briknoe Akzioner Noe Obsutobo "Novatech"
International Classes:
F25J1/02; C10L3/00; F25B1/00
Domestic Patent References:
| JP2016512595A | ||||
| JP2012083051A | ||||
| JP2011001554A | ||||
| JP2006503252A |
Attorney, Agent or Firm:
Asamura patent office