Basf Aktiengesellschaft

Basf Se Corporation

Thomas Hauff

Peter Schlemmer

Rainer Klostermann

Jobst Rüdiger Von Watzdorf

Ulrich Nieken

Hubertus Kröner

Jochen Kessler

Joachim Birk

Hubertus Kr&ouml;ner

Jochen Keβler

Christina Benthack

The invention relates to a method for monitoring exothermic reactions in a reactor, in which one or more starting materials react exothermically to give at least one product, and at least one gas is present in the reactor during operation as intended or during a runaway, comprising the following process:

Method for monitoring and ensuring the safety of exothermic reactions

A method of on-line monitoring and control of monomer conversion in emulsion polymerization includes continuously balancing, as from an initialization time, the heat Q , introduced into the reactor, the reaction enthalpy Q introduced via the monomer feed, and the heat which has been removed from the reactor Q , and calculating an amount of heat which has not been removed Q which would lead to an increase in the internal temperature and the internal pressure of the reactor in the event of a spontaneous adiabatic reaction. A check is carried out as to whether the potential adiabatic temperatures and pressures always lie below prescribed upper limits. If the upper limits are exceeded, the monomer feed to the reactor is throttled back or interrupted.

Method for continuously monitoring and controlling the monomer conversion during emulsion polymerization

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Limburgerhof, Germany

Thomas Hauff