in Others edited by
0 votes
0 votes

Consider the process in the figure. The liquid phase elementary reactions $$A + B \rightarrow P \:\:\:\: -r_{B1} = k_{1}\:x_{A}\:x_{B}$$ $$P + B \rightarrow S \:\:\:\: -r_{B2} = k_{2}\:x_{P}\:x_{B}$$ $$S + A \rightarrow 2P \:\:\:\: -r_{S3} = k_{3}\:x_{S}\:x_{A}$$ occur in the continuous stirred tank reactor $\text{(CSTR)}$, where $x_j$ is the mole fraction of the $j^{th}$ component $\text{(j = A,B, P, S)}$ in the $\text{CSTR}$. It is given that $k_{2} = k_{3}$. All process feed, process exit and recycle streams are pure. At steady state, the net generation rate of the undesired product, $S$, in the $\text{CSTR}$ is zero. As $q= x_{A}/x_{B}$
is varied at constant reactor temperature, the reactor volume is adjusted to maintain a constant single-pass conversion of $B$. For a fixed product rate and $90\%$ conversion of $B$ in the reactor, the value of $q$ that minimizes the sum ot the molar flow rates of the $A$ and $S$ recycle streams is ________________ (rounded oft to one decimal place).

All fresh feeds, process exit streams and recycle streams are pure

in Others edited by
4.6k points

Please log in or register to answer this question.

Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true
Welcome to GATE Chemical Q&A, where you can ask questions and receive answers from other members of the community.