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:
Oct. 26, 1976
Filed:
Apr. 12, 1974
Karl-Heinz Dorr, Mainz, DT;
Siegfried Bielz, Frankfurt am Main, DT;
Dan Constantinescu, Frankfurt am Main, DT;
Hubert Vollmer, Frankfurt am Main, DT;
Rudolf Beuchelt, Cologne, DT;
Hans Guth, Bergisch Neukirchen, DT;
Peter Reher, Schildgen-Nittum, DT;
Herman Wieschen, Cologne, DT;
Metallgesellschaft Aktiengesellschaft, Frankfurt am Main, DT;
Abstract
Sulfur dioxide is formed by the combustion of elemental sulfur in two distinct stages wherein oxygen-containing gas in a quantity which is initially less than that stoichiometrically required for total combustion of the sulfur to sulfur dioxide and the sulfur-dioxide gases and residual elemental sulfur are thereupon passed through a heat exchanger and subjected to an afterburning with additional quantities of oxygen-containing gas. 70% to 95% of the total oxygen required for combustion of sulfur is supplied in the initial or combustion stage and the remainder (i.e. 30 to 5%) is supplied in the afterburning stage.