Patents by Inventor Ludwig Englmaier

Ludwig Englmaier 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).

  • Method of removing encrustations in evaporation plants
    Patent number: 5964982
    Abstract: A solution to be evaporated is passed through one or several evaporation stages. In each evaporation stage, the solution is circulated between a heat exchanger and an evaporating vessel, and steam is withdrawn from the evaporating vessel. For removing crusts, the evaporation in the respective evaporation stage is interrupted, and a cleaning suspension containing at least 3 wt % granular solids is circulated through the heat exchanger and the evaporating vessel. The solids, which have an abrasive effect, remove the crusts. Preferably, the solution to be evaporated is circulated through the evaporation stage for removing the crusts, where the heat exchanger is heated and the cleaning solution is evaporated to such an extent that solids crystallize out and a cleaning suspension is formed.
    Type: Grant
    Filed: July 16, 1997
    Date of Patent: October 12, 1999
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Gunter Roller, Dieter Stein, Ulrich Wagner, Ludwig Englmaier