Chemical Reaction Engineering
For a tubular reactor with space time 'τ' and residence time 'θ', the following statement holds good.

τ = θ , when the fluid density changes in the reactor
τ = θ , for a non-isothermal reactor
τ and θ are always equal
τ = θ , for an isothermic tubular reactor in which the density of the process fluid is constant

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Chemical Reaction Engineering
A space velocity of 5 hr⁻¹ means that

Cent per cent conversion can be achieved in at least 5 hours
After every 5 hours, reactor is being filled with the feed
Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour
A fixed conversion of a given batch of feed takes 5 hours

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Chemical Reaction Engineering
An irreversible aqueous phase reaction, A + B → P, is carried out in an adiabatic mixed flow reactor. A feed containing 4kmole/m³ of each A and B enters the reactor at 8m³ /hr. If the temperature of the exit stream is never to exceed 390 K, what is the maximum inlet feed temperature allowed?(Data: Heat of reaction = - 50 kJ/mole, Density of the reacting mixture = 1000kg/m³, Specific heat of reacting mixture = 2kJ/kg.K)The above data can be assumed to be independent of temperature and composition.

490
390
290
190

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