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. 17, 2005
Filed:
Aug. 29, 2002
Kurt-wilhelm Eichenhofer, Leverkusen, DE;
Klaus-peter Grabowski, Wermelskirchen, DE;
Günter Dräger, Leverkusen, DE;
Martin Kürten, Bergisch Gladbach, DE;
Martin Schweitzer, Leverkusen, DE;
Kurt-Wilhelm Eichenhofer, Leverkusen, DE;
Klaus-Peter Grabowski, Wermelskirchen, DE;
Günter Dräger, Leverkusen, DE;
Martin Kürten, Bergisch Gladbach, DE;
Martin Schweitzer, Leverkusen, DE;
Bayer Aktiengesellschaft, Leverkusen, DE;
Abstract
The invention relates to a process for the continuous preparation of oleum of a concentration of 10 to 45% by weight of SOand/or sulphuric acid of a concentration of 94 to 100% by weight of HSOby combustion of sulphur with atmospheric oxygen according to the principle of superstoichiometric combustion, cooling the resultant sulphur-dioxide-containing gases to 350° C. to 500° C., catalytic conversion of these cooled gases to give sulphur-trioxide-containing gases in the presence of a vanadium-containing catalyst using single or double contact catalysis, absorption of the sulphur-trioxide-containing gases after cooling, if appropriate removal of liquids from the gases after absorption and energy recovery, with liquid sulphur being injected into the hot combustion gas stream perpendicular to the main direction of flow in the form of a fan using one or more bimodal fan-type nozzles.