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:
Sep. 15, 2009
Filed:
Jan. 15, 1999
Giuseppe Guarino, Cadro, CH;
Ermanno Filippi, Castagnola, CH;
Giuseppe Guarino, Cadro, CH;
Ermanno Filippi, Castagnola, CH;
Ammonia Casale S.A., Lugano Besso, CH;
Abstract
A method for in-situ modernization of a heterogeneous synthesis reactor, comprises the steps of providing an unperforated cylindrical wall () coaxial to the gas outlet wall () in a catalytic bed () of the radial or axial-radial type, the unperforated cylindrical wall () extending from an upper end () of the gas outlet wall () for a portion of the same of a prefixed length, so as to define a free-space () between the gas outlet wall () and the unperforated wall (), for the passage of a part of the gas leaving said catalytic bed (), and of providing means of closing the free-space () between the unperforated wall () and the gas outlet wall (), in proximity of the upper end () of the latter, preventing thereby a bypass of the catalytic bed or a recycling to the same of the gas entering respectively leaving the reactor. Thanks to the above steps, the present method allows to operate with a reduced amount of catalyst in the catalytic bed, keeping however the fluid dynamics and pressure drop characteristics unchanged.