An integration scheme for stiff solid-gas reactor models

An integration scheme for stiff solid-gas reactor models

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Many dynamic models encounter numerical integration problems because of a large span in the dynamic modes.In this paper we develop a numerical integration scheme for systems that include a gas phase, and solid and Cat Dehydrated liquid phases, such as a gas-solid reactor.The method is based on neglecting fast dynamic modes Cake/Pie Server and exploiting the structure of the algebraic equations.The integration method is suitable for a large class of industrially relevant systems.The methodology has proven remarkably efficient.

It has in practice performed excellent and been a key factor for the success of the industrial simulator for electrochemical furnaces for ferro-alloy production.