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:
Dec. 24, 2019
Filed:
Nov. 25, 2015
Casale SA, Lugano, CH;
Ermanno Filippi, Castagnola, CH;
Raffaele Ostuni, Lugano, CH;
Casale SA, , CH;
Abstract
Process for the synthesis of ammonia from a make-up gas containing hydrogen and nitrogen, said process comprising: generation of a synthesis gas () containing hydrogen and nitrogen in a molar ratio lower than 3, inside a front-end section (); a first cryogenic purification, designed to remove nitrogen and raise said molar ratio; conversion of the synthesis gas into ammonia () inside a high-pressure synthesis loop (), with extraction from said loop of a purge stream () containing hydrogen and inert gases; wherein at least a portion of said purge stream () undergoes a further purification in order to recover at least part of the hydrogen contained therein, obtaining at least one stream () containing recovered hydrogen which is recycled to the process.