Reactor analysis

Continuous-Flow Stirred-Tank Reactor. In a continuous-flow stirred-tank reactor (CSTR), reactants and products are continuously added and withdrawn. In practice, mechanical or hydrauHc agitation is required to achieve uniform composition and temperature, a choice strongly influenced by process considerations, ie, multiple specialty product requirements and mechanical seal pressure limitations. The CSTR is the idealized opposite of the weU-stirred batch and tubular plug-flow reactors. Analysis of selected combinations of these reactor types can be useful in quantitatively evaluating more complex gas-, Hquid-, and soHd-flow behaviors. 

Aris, Elementary Chemical Reactor Analysis, Prentice-Hall, 1969. 

Froment and Bischoff, Chemical Reactor Analysis and Design, Wiley, 1990. 

Froment, G. F. and Bischoff, K. B. 1979, Chemical Reactor Analysis and Design. John Wiley Sons, New York. 

Mass transfer across the liquid-solid interface in mechanically agitated liquids containing suspended solid particles has been the subject of much research, and the data obtained for these systems are probably to some extent applicable to systems containing, in addition, a dispersed gas phase. Liquid-solid mass transfer in such systems has apparently not been studied separately. Recently published studies include papers by Calderbank and Jones (C3), Barker and Treybal (B5), Harriott (H4), and Marangozis and Johnson (M3, M4). Satterfield and Sherwood (S2) have reviewed this subject with specific reference to applications in slurry-reactor analysis and design. 

Suppose now that a pilot-plant or full-scale reactor has been built and operated. How can its performance be used to confirm the kinetic and transport models and to improve future designs Reactor analysis begins with an operating reactor and seeks to understand several interrelated aspects of actual performance kinetics, flow patterns, mixing, mass transfer, and heat transfer. This chapter is concerned with the analysis of flow and mixing processes and their interactions with kinetics. It uses residence time theory as the major tool for the analysis. 

The growth of superlattices Is one of the key Issues In MOCVD reactor analysis and design. In addition to growing highly uniform, pure Aims one must be able to form sharp or accurately graded Interfaces between... 

Fig 3 Influence of flow rate on UASB reactor analysis... 

Many industrial processes which employ bubble column reactors (BCRs) operate on a continuous liquid flow basis. As a result these BCR s are a substantially more complicated than stationary flow systems. The design and operation of these systems is largely proprietary and there is, indeed a strong reliance upon scale up strategies [1]. With the implementation of Computational Fluid Dynamics (CFD), the associated complex flow phenomena may be anal)rzed to obtain a more comprehensive basis for reactor analysis and optimization. This study has examined the hydrodynamic characteristics of an annular 2-phase (liquid-gas) bubble column reactor operating co-and coimter-current (with respect to the gas flow) continuous modes. 

Fahidy, T. Z., Principles of Electrochemical Reactor Analysis, Elsevier, Amsterdam, 1985. 

Froment, G.F., Bischoff, K.B. (1990) Chemical Reactor Analysis and Design, 2nd edition, Wiley Interscience. 

Indicated design relations not recommended for use in reactor analysis. 

Siegel, M. FL, Merchuk, J. C., and Schugerl, K., Air-Lift Reactor Analysis Interrelationships between Riser, Downcomer, and Gas-Liquid Separator Behavior, including Gas Recirculation Effects, AIChE J., 32 1585 (1986)... 

Aris, R., Elementary Chemical Reactor Analysis, Prentice-Hall, Englewood Cliffs, NJ (1969). 

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