Control of Quaternary Ideal System

CONTROL OF QUATERNARY IDEAL SYSTEM 16.3.1 Dynamic TUbular Reactor Model... 

However, if two products are produced, the temperature information may be rich enough to infer compositions with sufficient accuracy so that direct composition measurement is not absolutely necessary for neat operation. The ideal case considered by Roat et al. (A -f B C -f D) and the production of methyl acetate (methanol + acetic acid methyl acetate -f water) are examples of this type of chemistry. In this chapter, we consider the control of the ideal quaternary system. In Chapter 13 the control of the methyl acetate system and other similar real systems are explored. 

The dynamic controllability of the ideal quaternary two-reactant, two-product system was explored. Adding more reactive trays improved dynamic controllability. The two-temperature control structure provided fairly effective control of the quaternary system. 

In Parts I and II we explored the steady-state designs of several ideal hypothetical systems. The following three chapters examine the control of these systems. Chapter 10 considers the four-component quaternary system with the reaction A + B C + D under conditions of neat operation. Chapter 11 looks at control of two-column flowsheets when an excess of one of the reactants is used. Chapter 12 studies the ternary system A + B C, with and without inerts, and the ternary system A B + C. We will illustrate that the chemistry and resulting process structure have important effects on the control structure needed for effective control of reactive distillation columns. 

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