Evonik Operations Gmbh

Benny Hartono

Harald Jakob

Hans Joachim Hasselbach

Hans-Joachim Hasselbach

Bernd Drapal

Martin Körfer

Rainer Peter

Christian Kaiser

Stefan Reichert

Sebastian Bernhardt

Danny De Corte

Thomas Lammersen

A method for controlling a chemical process, by preparing methanol, hydrogen sulfide, methyl mercaptan, hydrocyanic acid, acrolein, 3-methylthiopropionaldehyde, 5-(2-methylmercaptoethyl)-hydantoin, methionine, a salt of methionine, and a derivative of methionine. The method includes providing a training set TS, wherein TSis process values PVand process values PVbeing correlated to one another, and/or laboratory values LVand process values PVbeing correlated to one another. The method includes training a processing unit on the training set TSto identify a pattern of correlation between one or more measured process variables and at least one process variable. The method includes developing a calibration function CFfor a calibrated soft sensor from the identified pattern of correlation and predicting at least one operating parameter for the chemical process as an approximation to LVand/or PV. A system for controlling a chemical process.

Method and system for process control

A process for preparing methionine includes the alkaline hydrolysis of 5-(2-methylmercaptoethyl)-hydantoin (methionine hydantoin) in an aqueous process solution containing alkali metal hydroxide and/or alkali metal carbonate and/or alkali metal hydrogencarbonate. The alkali metal cations in the process solution are potassium and sodium having a K/Na molar ratio range from 99/1 to 20/80.

Process for preparing methionine

Growing community of inventors

Singapore, Singapore

Benny Hartono