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.

Date of Patent:
Sep. 12, 2017

Filed:

May. 05, 2014
Applicant:

Technip France, Courbevoie OT, FR;

Inventors:

Henri Paradowski, Pluvigner, FR;

Sandra Thiebault, Coye-la-Foret, FR;

Loic Barthe, Paris, FR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J 3/02 (2006.01);
U.S. Cl.
CPC ...
F25J 3/0209 (2013.01); F25J 3/0233 (2013.01); F25J 3/0238 (2013.01); F25J 2200/02 (2013.01); F25J 2200/70 (2013.01); F25J 2200/76 (2013.01); F25J 2205/04 (2013.01); F25J 2210/04 (2013.01); F25J 2210/06 (2013.01); F25J 2230/24 (2013.01); F25J 2230/60 (2013.01); F25J 2235/60 (2013.01); F25J 2240/02 (2013.01); F25J 2245/02 (2013.01); F25J 2270/04 (2013.01); F25J 2270/06 (2013.01); F25J 2270/88 (2013.01); F25J 2290/80 (2013.01);
Abstract

This method comprises cooling the feed natural gas in a first heat exchanger and introducing the cooled, feed natural gas into a first separation flask. It comprises the dynamic expansion of a turbine supply flow in a first expansion turbine and introducing the expanded flow into a separation column. This method comprises removing, at the head of the separation column, a head flow rich in methane and removing a first recirculation flow from the compressed head flow rich in methane. The method comprises forming at least a second recirculation flow obtained from the head flow rich in methane downstream of the separation column and forming a dynamic expansion flow from the second recirculation flow.


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