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. 30, 2008
Filed:
Oct. 24, 2001
William Davey, Frankfurt, DE;
Ermanno Filippi, Castagnola, CH;
William Davey, Frankfurt, DE;
Ermanno Filippi, Castagnola, CH;
Lurgi GmbH, Lurglallee, Frankfurt am Main, DE;
Ammonia Casale S.A., Via Sorengo, Lugano-Bessom, CH;
Abstract
A method for producing ammonia from natural gas, fed to an autothermic reformer with an Orich gas. Crude synthesis gas is produced at temperatures of 900 to 1200° C., pressures of 40 to 100 bar and in the presence of a cracking catalyst. The crude synthesis gas is led through a catalytic conversion system to convert CO to H, thereby obtaining a conversion synthesis gas with a Hcontent of at least 55 vol.-% and a CO content of not more than 8 vol.-%. The conversion synthesis gas is subjected to a gas purification to remove CO, CO and CH, thereby producing an N—Hmixture that is subjected to a catalytic ammonia synthesis. The ammonia produced can at least be partially converted to urea by reacting it with CO.