GENERAL DESCRIPTION OF THE EXGAS SYSTEM

The EXGAS module is itself made up of three sections  

The development of the system is such that the primary products as well as the secondary products must systematically undergo reaction and can therefore, because of this, accumulate in an unwarranted manner in the reaction medium. 

This basic set makes up the heart of the system, as it contains the unimolecular, bimolecular and trimolecular elementary reactions, of the molecular chemical species and radicals containing 0, 1 or 2 carbon atoms, as well as hydrogen and oxygen atoms. It was created using the method proposed by TSANG. 

Two cases are observed, according to whether a reaction can be found in the literature, in which case it is introduced into the basic set, or it is improbable and is not to be found in the literature, in which case it is not considered. This method has led to the creation of a basic set of about 800 reactions. The kinetic data have mainly been taken from the critical compilations of BAULCH et al, and of TSANG et al. (cf. Chapter XIV). 

The basic set of reactions has finally been validated by simulating various oxidation and combustion reactions of hydrocarbons, in particular of methane and of ethane, in different laboratory reactors (stirred flow reactor, plug-flow reactor...) carried out using very varied operating conditions. 

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