Abstract
A mathematical model has been developed that describes the simultaneous fluid flow, multicomponent heat and mass transport, and gas-phase reaction kinetics for a pyrolysis tube operated in the laminar-flow regime. The model treats both the furnace and the cooling region, and it accounts for cooling strategies ranging from free convection in air to forced convection heat transfer with water. Pyrolysis of CF 2HCl, described by 24 species and 27 elementary reactions, is used as an illustrative example. The results show the changes in reaction pathways that take place in the cooling section, the extent to which the rate of heat removal can be varied, and the effects of cooling rate and outlet temperature on the generation of by-products.
Published Version
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