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:
Apr. 05, 1977
Filed:
Feb. 27, 1976
Karel Vydra, Bad Nauheim, DT;
Zdenek Hubalek, Bad Nauheim, DT;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DT;
Abstract
A process for the catalytic conversion of SO.sub.2 to SO.sub.3 wherein a main stream of SO.sub.2 -containing gas is branched to form a partial stream which is admixed with an oxygen-containing gas and brought to the temperature of the first contact hurdle or stage. The effluent therefrom is mixed with the remainder of the SO.sub.2 -containing gas and is fed to the second contact hurdle or stage. The oxgyen-containing gas is added in an amount sufficient to reduce the SO.sub.2 concentration so that a temperature can be used in the first stage which corresponds to the SO.sub.2 +1/2 O.sub.2 .revreaction.SO.sub.3 equilibrium.