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P 1 1 - 6 B B In a certain chemical plant, a reversible fluid - phase isomerization A B is carried out over a
P In a certain chemical plant, a reversible fluidphase isomerization
is carried out over a solid catalyst in a tubular packedbed reactor. If the reac
tion is so rapid that mass transfer between the catalyst surface and the bulk
fluid is ratelimiting show that the kinetics are described in terms of the bulk
concentrations and by
where moles of reacting per unit area catalyst per unit time
mass transfer coefficients for A and
reaction equilibrium constant
It is desired to double the capacity of the existing plant by processing twice
the feed of reactant A while maintaining the same fractional conversion of
to in the reactor. How much larger a reactor, in terms of catalyst weight, would
be required if all other operating variables are held constant? You may use the
ThoenesKramers correlation for mass transfer coefficients in a packed bed.
Describe the effects of the flow rate, temperature, particle size at conversion.
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