Aggregate behavior and lumped kinetics of many reactions in backmixed and plug-flow reactors
- Exxon Research and Engineering Co., Annandale, NJ (United States). Corporate Research Labs.
The long-time behavior of a reaction mixture containing infinitely many species in isothermal continuous stirred tank reactors (CSTRs) is analyzed and contrasted with that in a plug-flow reactor (PFR). The reaction kinetics considered are irreversible first-order, irreversible coupled pseudo first-order, and reversible first-order. Asymptotic lumped kinetics for the mixture as a whole are developed as a function of feed properties and reactor type. Such lumped kinetics in many cases are of the power law form, with the exponent for a CSTR being lower than that for a PFR. Conditions under which non-power-law kinetics arise are given. Due to the wide spread of reactor residence times, the mixture in CSTRs admits a much richer variety of asymptotic possibilities than in the PFR. The results uncover some behavior differences and relationships between CSTRs and a PFR for converting complex mixtures such as petroleum distillates or coal liquids.
- OSTI ID:
- 201437
- Journal Information:
- AIChE Journal, Journal Name: AIChE Journal Journal Issue: 1 Vol. 42; ISSN 0001-1541; ISSN AICEAC
- Country of Publication:
- United States
- Language:
- English
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