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:
Aug. 10, 2004
Filed:
Aug. 19, 2002
Applicant:
Inventors:
Lawrence A. Smith, Jr., Houston, TX (US);
William M. Cross, Jr., Seabrook, TX (US);
Assignee:
Catalytic Distillation Technologies, Pasadena, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 2/62 ;
U.S. Cl.
CPC ...
C07C 2/62 ;
Abstract
A method of operating a multi-phase downflow reactor so as to induce a pulsing flow regime is disclosed. The pulse may be induced by increasing the gas rate while maintaining the liquid rate until a pressure drop sufficient to induce the pulse flow is achieved. The method is particularly useful in the sulfuric acid catalyzed alkylation of olefins in a reactor packed with a stainless steel/polypropylene mesh.