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:
Oct. 05, 2021
Filed:
Aug. 25, 2016
Minish M.. Shah, E. Amherst, NY (US);
Bryan S. Kalp, Grand Island, NY (US);
Gary W. Fenner, Grand Island, NY (US);
Sameer Parvathikar, Durham, NC (US);
Minish M.. Shah, E. Amherst, NY (US);
Bryan S. Kalp, Grand Island, NY (US);
Gary W. Fenner, Grand Island, NY (US);
Sameer Parvathikar, Durham, NC (US);
PRAXAIR TECHNOLOGY, INC., Danbury, CT (US);
Abstract
The present invention relates to a cold box cycle which allows for independent control of the heat supplied for reboilers associated with the separation columns. More specifically, the invention relates to the tight control of the hydrogen removal separation, thus avoiding the possibility of excess reboiling in this separation. Optimal reboiling also results in a lower temperature of the hydrogen depleted liquid from this separation. As this stream is used to provide a portion of the cooling at the cold end of the primary heat exchanger, lower temperatures facilitate cooling of the incoming syngas feed, reducing carbon monoxide (CO) losses into the crude hydrogen stream from the high pressure separator. Lower CO in the crude hydrogen allows for smaller hydrogen purification equipment.