Semibatch reactors irreversible

A semibatch reactor is run at constant temperature by varying the rate of addition of one of the reactants, A. The irreversible, exothermic reaction is first order in reactants A and B. 

The influence of heat transfer on yield and selectivity in scaling up batch and semibatch reactors will be illustrated using a series reaction, taking place in an ideal jacketed stirred-tank reactor. This reaction is composed of two irreversible elementary steps, both exothermic and both with first order kinetics ... 

Consider the process illustrated in Figure 4.17, where the second-order irreversible reaction A + B C is carried out in a semibatch reactor. Since there is a large excess of A present within the reactor, we may take the kinetics of the reaction to be pseudo-first-order in B, and since this is not a constant-volume operation let us write a molal balance on B. 

When a reactor is charged with liquid A and B is a gas that is added continuously, it becomes a semibatch reactor. The rates of reaction depend on the concentration of B in the liquid phase, which is a function of gas solubility, pressure, and agitation conditions. However, we are often concerned with the relative reaction rates and the selectivity, which do not depend on Cb if the reaction orders are the same for both reactions. The reactions are treated as pseudo-first-order, and equations are developed for an ideal batch reactor with irreversible first-order kinetics... 

ElS.l The irreversible reaction A + products, has the rate represented by a pseudo first-order reaction. This reaction takes place in a semibatch reactor of lOL and at 25°C, some data follow ... 

For arbitrary feed to batch or semibatch reactors, Eq. (A.3.1.5) has not yet been solved analytically. If the step-growth polymerization is irreversible, in Eq. (A3.1.1) is zero and the time variation of the moment-generating function, G s, t), is as follows [2,5] ... 

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