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:
Jan. 28, 2025
Filed:
Jul. 28, 2022
Neil M. Prosser, Lockport, NY (US);
Neil M. Prosser, Lockport, NY (US);
Praxair Technology, Inc., Danbury, CT (US);
Abstract
A system and method for separating air by cryogenic distillation using a four column arrangement including a higher pressure column, a lower pressure column, an intermediate pressure column, and an argon column is provided. The disclosed system and method is particularly suited for production of normal purity oxygen and employs a once-through kettle column reboiler, a once-through kettle column condenser, and a once-through argon condenser. The once through argon condenser is disposed within the lower pressure column where an argon-rich vapor stream is condensed against the descending liquid in the lower pressure column.