Model for complete drawdown of floating solids in stirred Tank reactors

Continuous stirred tank reactors: easy to stabilise?

The objective of this work is to make use of methodologies and tools from nonlinear Lyapunov theory in the design of bounded control laws for the temperature stabilisation of Continuous Stirred Tank Reactors CSTRs with exothermic or endothermic reactions Simple output feed back control laws i e control laws that feed back only the available mea surements are designed It is shown that these cont...

Modelling and Adaptive Control of Aerobic Continuous Stirred Tank Reactors

A biotechnological aerobic process is modelled as an ordinary diierential equation which, under mild assumptions, ensures invariance of the positive orthant and bound-edness of the concentrations. An adaptive controller is designed for this general class of processes so that the external substrate can be regulated by the dilution rate into a prespeciied arbitrarily small neighbourhood of a cons...

REACTORS, KINETICS, AND CATALYSIS Diagnostic NonlinearAnalysisof Fischer-Tropsch Synthesis in Stirred-Tank Slurry Reactors

Multiplicity of steady states was experimentally obser®ed, somewhat sporadically, for ( ) Fischer Tropsch FT synthesis in stirred tank slurry reactors in the reactor originally ( ) at the wax-producing normal steady state suddenly jumping to a high-temperature ( ) methane-producing steady state for some time and e®entually returning to the normal steady state. A diagnostic nonlinear analysis sh...

Cfd Analysis of Turbulence Effect on Reaction in Stirred Tank Reactors

Stirred tank reactors are one of the most commonly used equipments in industry for achieving mixing and reaction. Flow fields in a stirred reactor are obtained via computational fluid dynamics. In this work CFD is used for the simulation of a reactive flow process consisting of a second order reaction. The extent of reaction is found to depend on impeller speed and its position from the bottom ...

CFD Simulation of Flows in Stirred Tank Reactors Through Prediction of Momentum Source