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:
Apr. 17, 2018
Filed:
Apr. 24, 2014
Air Products and Chemicals, Inc., Allentown, PA (US);
Christopher Michael Ott, Laurys Station, PA (US);
Gowri Krishnamurthy, Lansdale, PA (US);
Fei Chen, Whitehouse Station, NJ (US);
Yang Liu, Allentown, PA (US);
Mark Julian Roberts, Kempton, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
A method for liquefying a natural gas feed stream and removing nitrogen therefrom, the method comprising passing a natural gas feed stream through a main heat exchanger to produce a first LNG stream, and separating a liquefied or partially liquefied natural gas stream in a distillation column to form nitrogen-rich vapor product, wherein a closed loop refrigeration system provides refrigeration to the main heat exchanger and to a condenser heat exchanger that provides reflux to the distillation column.