Patents by Inventor Franz F. Rhiel

Franz F. Rhiel 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 controlling the concentrations of a multicomponent mixture
    Patent number: 5368699
    Abstract: A method of controlling concentrations in process technology operations--preferentially in thermal separation technology--using a non-linear, pressure-compensated temperature as control signal. The method can be used flexibly within a wide operating range.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: November 29, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Franz F. Rhiel, Gunther Weymans, Said Mahiout
  • Method of controlling heat exchangers using enthalpy flow as the correcting variable
    Patent number: 5363905
    Abstract: A method of controlling a heat exchanger wherein the enthalpy flow into the heat exchanger serves as a correcting variable. The robust and versatile control method is particularly suitable for use in endothermic reactions and for distillation.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: November 15, 1994
    Assignee: Bayer Aktiengesellschaft
    Inventors: Franz F. Rhiel, Heinrich Steude, Gunther Weymans, Klaus Elgeti
  • Process for the separation of multicomponent systems containing intermediate boiling substances in separating columns with side discharge
    Patent number: 5244544
    Abstract: A process for the separation of multicomponent systems containing intermediate boiling substances in separating separating columns with side discharge, the temperatures T.sub.u and T.sub.o above and below the side discharge are measured on the column or inside the column and the temperature difference T.sub.u -T.sub.o is used for controlling the side discharge. The control is carried out by constantly controlling one of the two temperatures T.sub.u or T.sub.o by the output of the evaporator or the discharge from the sump or the reflux or the removal of distillate or the reflux ratio.
    Type: Grant
    Filed: May 8, 1992
    Date of Patent: September 14, 1993
    Assignee: Bayer Aktiengesellschaft
    Inventors: Lothar Lang, Franz F. Rhiel, Gunther Weymans