Patents by Inventor Günter Dräger

Günter Dräger has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the combustion of sulphur for the preparation of oleum and sulphuric acid with reduced (NO)x content
    Patent number: 6893622
    Abstract: The invention relates to a process for the continuous preparation of oleum of a concentration of 10 to 45% by weight of SO3 and/or sulphuric acid of a concentration of 94 to 100% by weight of H2SO4 by 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.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: May 17, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Kurt-Wilhelm Eichenhofer, Klaus-Peter Grabowski, Günter Dräger, Martin Kürten, Martin Schweitzer