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:
Apr. 14, 2020

Filed:

Dec. 26, 2011
Applicants:

Vanessa Gahier, Jouy le Moutier, FR;

Julie Gouriou, Rueil Malmaison, FR;

Sandra Thiebault, Coye-la-Foret, FR;

Loic Barthe, Paris, FR;

Inventors:

Vanessa Gahier, Jouy le Moutier, FR;

Julie Gouriou, Rueil Malmaison, FR;

Sandra Thiebault, Coye-la-Foret, FR;

Loic Barthe, Paris, FR;

Assignee:

TECHNIP FRANCE, Courbevoie, FR;

Attorneys:
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 2200/38 (2013.01); F25J 2200/70 (2013.01); F25J 2200/76 (2013.01); F25J 2205/04 (2013.01); F25J 2210/06 (2013.01); F25J 2230/24 (2013.01); F25J 2230/32 (2013.01); F25J 2230/60 (2013.01); F25J 2240/02 (2013.01); F25J 2290/80 (2013.01);
Abstract

This method comprises a separation of a feed stream () into a first fraction (A) and a second fraction (B). It comprises injecting the first cooled feed fraction () into a first separating flask () to produce a light head stream (). The method comprises expanding a turbine feed fraction () resulting from the light head stream () in a first turbine () up to a first pressure and injecting the first expanded fraction () into a distillation column (). The method comprises expanding the second fraction of the feed stream (B) in a second turbine () up to a second pressure substantially equal to the first pressure. The second expanded fraction (A) from the second dynamic expansion turbine () is used to form a cooled reflux stream (B) injected into the column ().


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