Patents by Inventor Grete Bach

Grete Bach 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 reducing the carbonization of heat exchange surfaces
    Patent number: 5501878
    Abstract: A process for reducing the carbonization of the heat exchange surfaces in a tubular heat exchanger of boiler steel which, in particular, within a unit for the thermal cracking of hydrocarbons to alkenes and while producing steam, carries out the rapid cooling of the cracking products after they leave the cracking furnace. After the tubular heat exchanger is cleaned and before it is returned to service, the sides of the heat exchange surfaces which come into contact with the cracking products are treated under reducing conditions until the greatest possible reduction of the Fe.sub.2 O.sub.3 on the surface to Fe.sub.3 O.sub.4 has taken place, without submicron Fe powder being formed.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: March 26, 1996
    Assignees: Mannesmann Aktiengesellschaft, KTI Group B.V.
    Inventors: Simon Barendregt, Gerhard Zimmermann, Grete Bach