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:
Jul. 10, 2018
Filed:
Nov. 09, 2015
Catherine B. Sarigiannis, Grand Island, NY (US);
Anna Knight, Getzville, NY (US);
Evelyn Juandi, Ontario, CA;
Wei Zhang, Ontario, CA;
Jeremiah J. Rauch, Clarence, NY (US);
Catherine B. Sarigiannis, Grand Island, NY (US);
Anna Knight, Getzville, NY (US);
Evelyn Juandi, Ontario, CA;
Wei Zhang, Ontario, CA;
Jeremiah J. Rauch, Clarence, NY (US);
PRAXAIR TECHNOLOGY, INC., Danbury, CT (US);
Abstract
A system and method for providing supplemental refrigeration to an air separation plant is provided. A closed loop supplemental refrigeration circuit that can be easily retrofitted or added onto an air separation plant that increases the liquid product production capability of the air separation plant. The supplemental refrigeration capacity of the supplemental refrigeration circuit is controlled by removing or adding a portion of the refrigerant in the supplemental refrigeration circuit to adjust the inlet pressure while maintaining a substantially constant volumetric flow rate and substantially constant pressure ratio across the compressor. Removing the refrigerant from the supplemental refrigeration circuit decreases the refrigeration imparted by the supplemental refrigeration circuit and thus provides the capacity to turn-down liquid product make without shutting down the compressors and turbo-expanders in the supplemental refrigeration circuit.