What are some helpful chemical reactions

Prevent uncontrolled chemical reactions

Thermal runaway or explosion can result from an adiabatic process of a reaction or series of reactions. It occurs when the heat generated by an exothermic reaction is accumulated, causing the temperature of the reaction mixture to rise. The reaction speed then increases, which results in a higher rate of heat generation.

The rise in temperature can trigger secondary reactions, such as the decomposition of the reaction mass, the intermediate products or the final product. This in turn leads to a thermal runaway. Thorough laboratory-scale process safety studies can identify and prevent the conditions that lead to thermal runaway before the process is scaled up.

The analysis of the desired and potentially undesirable reactions is of the utmost importance. Adiabatic calorimeters, Dewar flasks or DSC are used to investigate undesirable reactions, whereas desired reactions are usually analyzed with a reaction calorimeter.

The reaction calorimeter can be used to determine key factors such as: B. Reaction Heat, Accumulation, Adiabatic Temperature Rise, and MTSR to understand the consequences of a cooling failure. It is used to determine whether the desired synthesis reaction can cause the process to become unstable, which would result in a secondary reaction.

In most cases, the secondary reaction releases more energy at a faster rate than the desired reaction. The production plant is then unable to safely dissipate this energy. For this reason, the reaction must be designed in such a way that no potentially dangerous conditions can occur. Or suitable measures must be defined to ensure that the process remains under control at all times.