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:
Jun. 03, 2008
Filed:
Dec. 23, 2004
Gerhard Olbert, Dossenheim, DE;
Thorsten Johann, Limburgerhof, DE;
Markus Weber, Ludwigshafen, DE;
Neven Lang, Mannheim, DE;
Eckhard Ströfer, Mannheim, DE;
Martin Fiene, Niederkirchen, DE;
Markus Siegert, Heidelberg, DE;
Gerhard Olbert, Dossenheim, DE;
Thorsten Johann, Limburgerhof, DE;
Markus Weber, Ludwigshafen, DE;
Neven Lang, Mannheim, DE;
Eckhard Ströfer, Mannheim, DE;
Martin Fiene, Niederkirchen, DE;
Markus Siegert, Heidelberg, DE;
BASF Aktiengesellschaft, , DE;
Abstract
A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor () having heat-exchange plates () which are arranged in the longitudinal direction of the reactor () and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities () for the heat transfer medium to the heat-exchange plates () and also gaps () between heat-exchange plates () in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.