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. 09, 2001
Filed:
Mar. 19, 1998
Giorgio Pagani, Lugano, CH;
Ermanno Filippi, Castagnola, CH;
Ammonia Casale S.A., Lugano-Besso, CH;
Abstract
A Method for in-situ modernization of a heterogeneous exothermic synthesis reactor, comprising the steps of providing at least a first and at least a second catalytic bed (,) in an upper (2,) respectively lower (2,) portion of the reactor, providing additionally a lowermost catalytic bed (,) in the lower portion (2,) of the reactor having a reaction volume smaller than the reaction volume of the second catalytic bed (,), and loading the lowermost catalytic bed (,) with a catalyst having an activity higher that the activity of the catalyst loaded in the other beds (,). Thanks to the above steps, the present method allows to obtain a reactor with high conversion yield.