The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2017
Filed:
Jun. 22, 2012
Marc Bonnissel, Montigny le Bretonneux, FR;
Bertrand Du Parc, Voisins le Bretonneux, FR;
Eric Zielinski, Versailles, FR;
Marc Bonnissel, Montigny le Bretonneux, FR;
Bertrand Du Parc, Voisins le Bretonneux, FR;
Eric Zielinski, Versailles, FR;
Saipem S.A., Montigny le Bretonneaux, FR;
Abstract
A process for liquefying natural gas by; a) causing it to flow through three series connected heat exchangers, where gas is cooled to T; Tis less/equal to the liquefaction temperature of natural gas at atmospheric pressure; and b) causing the closed circuit circulation of a first stream of refrigerant gas at a pressure Plower than Pentering the third exchanger and leaving the first exchanger, the first stream obtained using a first expander to expand a first portion of a second stream at Phigher than P, the second stream flowing relative to the natural gas stream entering the first exchanger and leaving the second exchanger; and a third stream at a pressure Phigher than Pand lower than Pflowing relative to the first stream, entering the second exchanger and leaving the first exchanger; c) the second stream at the pressure Pobtained by compression.