Multiplicity features of adiabatic autothermal reactors

✍ Scribed by Marianne Lovo; Vemuri Balakotaiah

• Publisher: American Institute of Chemical Engineers
• Year: 1992
• Tongue: English
• Weight: 1004 KB
• Volume: 38
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690380111

✦ Synopsis

Singularity theory, large activation energy asymptotics, and numerical methods are used to present a comprehensive study of the steady-state multiplicity features of three classical adiabatic autothermal reactor models: tubular reactor with internal heat exchange, tubular reactor with external heat exchange, and the CSTR with external heat exchange. Specifically, we derive the exact uniqueness-multiplicity boundary, determine typical cross-sections of the bifurcation set, and classify the different types of bifurcation diagrams of conversion us. residence time. Asymptotic (limiting) models are used to determine analytical expressions for the uniqueness boundary and the ignition and extinction points. The analytical results are used to present simple, explicit and accurate exp*essions defining the boundary of the region of autothermal operation in the physical parameter space.