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:
Mar. 06, 2018
Filed:
Jun. 03, 2016
Applicant:
Lummus Technology Inc., Bloomfield, NJ (US);
Inventor:
Charles Sumner, Tucson, AZ (US);
Assignee:
Lummus Technology Inc., Bloomfield, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F25J 1/02 (2006.01); F25J 3/06 (2006.01); C09K 5/04 (2006.01); F25J 3/02 (2006.01);
U.S. Cl.
CPC ...
F25J 3/061 (2013.01); C09K 5/042 (2013.01); F25J 3/0219 (2013.01); F25J 3/0233 (2013.01); F25J 3/0238 (2013.01); F25J 3/0252 (2013.01); C09K 2205/12 (2013.01); F25J 2205/04 (2013.01); F25J 2210/12 (2013.01); F25J 2215/62 (2013.01); F25J 2270/12 (2013.01); F25J 2270/18 (2013.01); F25J 2270/66 (2013.01); F25J 2270/902 (2013.01);
Abstract
A method of cooling using an extended binary refrigerant system containing methane and a C3 hydrocarbon such as propylene and/or propane is disclosed. The extended binary refrigerant from a compressor final discharge is separated into a methane-rich vapor fraction and at least one C3 rich liquid fraction so as to provide various temperatures and levels of refrigeration in various heat exchange stages. The method and corresponding refrigeration system can be utilized in plants utilizing low pressure or high pressure demethanizers.