Bayer Aktiengesellschaft

Klaus Elgeti

Gunther Weymans

Jurgen Kirsch

Marko Zlokarnik

Jurgen Heuser

Franz Ferdinand Rhiel

Heinrich Steude

Hanns-Ingolf Paul

Rolf Treckmann

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.

Method of controlling heat exchangers using enthalpy flow as the

A process for isolating polymers from their solvents by addition of fluids containing carbon dioxide at temperatures of 30.degree. to 280.degree. C. and under pressures of 1 to 1,000 bar is disclosed. The process is characterized in that the concentration of the polymers in their solvents is between 5% and 80% by weight and the fluid containing carbon dioxide consists of at least 50% by weight carbon dioxide.

Process for isolating polymers from their solvents using liquids

In an injector for the dispersion of a gas into a liquid and comprising a gas inlet, a liquid inlet, and a mixing chamber communicating with said inlets and having an inlet and an outlet, the improvement which comprises at least one deflecting element disposed in the mixing chamber along the axis of the liquid inlet, whereby the liquid is distributed across the full cross-section of the mixing chamber. The deflector may be flat, conical or parabolic or it may be axially offset relative to the mixing chamber as a tongue. Special configurations are shown which are especially suited for use in treating liquid effluents and in fermentation processes.

Injectors with deflectors for their use in gassing liquids

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Bergisch Gladbach, Germany

Klaus Elgeti