General Mole Balance

General Mole Balance Equation. The mole balance equation is applied for individual reaction mixture components. The first decision we have to make is the choice of the system, i.e. reactor space, in which... 

The general mole balance equation for a reaction component i at a time t in words is... 

The above general mole balance equation can be expressed in terms of rates as... 

Now, partial pressure of species A must be related to total-system pressure. This may be done easily by a general mole balance on the system, resulting in the following relationships ... 

Again, start with Equation 3.2, the generalized mole balance relation, and drop those terms that do not apply or are too small to be considered. Clearly, there... 

From this general mole balance equation we can develop the design equations for the various types of industrial reactors batch, semibatch, and continuous-flow. Upon, evaluation of these equations we cau determine the time (batch) or reactor volume (continuous-flow) necessary to convert a specified amount of the reactants to products. 

A batch reactor has neither inflow nor outflow of reactants or products while the reaction is being carried out Fjo = Fj 0. The resulting general mole balance on species j is... 

Figure 1-4 Contiuuous-stitred tank reactor. When the general mole balance equation...

P1-7a How can you convert the general mole balance equation for a given species, Equation (1-4), to a general mass balance equation for that species ... 

Generally, when analyzing laboratory experiments it is best to process the data in terms of the measured variable, Since concentration is the measured variable for most liquid-phase reactions, the general mole balance equation applied to reactions in which there is no volume change becomes... 

In this chapter we discuss reactor selection and general mole balances for multiple reactions. There are three basic types of multiple reactions series, parallel, and independent. In parallel reactions (also called competing reactions) the reactant is consumed by two different reaction pathways to form different products ... 

Des n equatioiis. The general mole balance equations (design equatiova) bvtsed... 

In die tubular reactor, the reactants are continually consumed as they flow down the length of the reactor, In modeling the tubular reactor, we assume that the concentration varies continuously in the axial direction through the reactor. Consequently, the reaction rate, which is a function of concentration for all but zero-order reactions, will also vary axially. The general mole balance equation is given by Equation (1-4) ... 

The first chapter focused on the general mole balance equation die balance was applied to the four most common types of industrial reactors, and a design equation was developed for each reactor type. In Chapter 2 we first define con-version and then rewrite the design equations in terms of conversion. After car rying out this operation, we show how one may size a reactor i.e., determine the reactor volume necessary to achieve a specified conversion) once the relationship between reaction rate, r, and conversion is known. 

The startup of a fixed volume CSTR under iscrthennal conditions is rare, but it does occur occasionally. Here we want to determine the time necessary to reach steady-state operation. We begin with the general mole balance equation applied to Figure 4-13a ... 

The General Mole Balance Equation 6 Batch Reactors 8 Continuous-Flow Reactors 10... 

Overview—Chapter 1, This chapter develops the first building block of chemical reaction engineering, mole balances, that will be used continually throughout the text. After completing this chapter the reader will be able to describe and define the rate of reaction, derive the general mole balance equation, and apply the genera mole balance equation to the four most common types of industrial reactors. 

As with the PFR, the PER is assumed to have no radial gradients in concentration. temperature, or reaction rate. The generalized mole balance on species A over catalyst w eighi AW results in the equation... 

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