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:
May. 26, 2015
Filed:
Nov. 06, 2008
Ermanno Filippi, Castagnola, CH;
Marco Badano, Lugano-Besso, CH;
Geoffrey Frederick Skinner, Reading, GB;
Ermanno Filippi, Castagnola, CH;
Marco Badano, Lugano-Besso, CH;
Geoffrey Frederick Skinner, Reading, GB;
Casale SA, , CH;
Abstract
The present invention concerns a process for producing ammonia synthesis gas from the reforming of hydrocarbons with steam in a primary reformer () equipped with a plurality of externally heated catalytic tubes and then in a secondary reformer () together with an oxidant gas. In this process, the reaction of said hydrocarbons with said steam in said primary reformer () is performed at an operating pressure of at least 45 bar in the catalytic tubes and a flow of essentially pure oxygen or oxygen-enriched air is added to said secondary reformer as oxidant gas for substantially reforming together with said all the hydrocarbons content of said product gas exiting the primary reformer (). In the case essentially pure oxygen is used as oxidant gas, a flow of nitrogen is added downstream the secondary reformer () to reach a N2/H2 molar ratio corresponding to or close to the stoichiometric ratio for ammonia synthesis. This process allows to obtain high synthesis gas production capacities and lower investment and energy costs.