Patents by Inventor Wolfgang Ratzeburg

Wolfgang Ratzeburg 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).

  • Patent number: 4239500
    Abstract: A process for the utilization of tar-dust which is separated from the gases derived from gasification of granular fuel under pressure, especially of bituminous coal, and in which the tar-dust separated from the gases is fed back into the pressure gasification cycle of the fuel. The tar-dust is added as a binder in the pelletization of the fine grained portions of the fuel and is fed in pellet form into the generator. Apparatus for carrying out the process comprises a pressure generator having a feed device for granular fuel, a tar-dust separator, and a pelletizing device connected by a tar-dust coveying pipe to the tar-dust separator, for the pelletizing of fine grains of fuel with tar-dust as a binder, the pelletizing device conveying the green pellets produced thereby into the feed device. The granular fuel is screened to pass only that portion below a predetermined grain size to the pelletizer, the remaining portion being fed directly to the generator.
    Type: Grant
    Filed: March 14, 1979
    Date of Patent: December 16, 1980
    Assignee: Steag A.G.
    Inventor: Wolfgang Ratzeburg