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Q#1 GATE CH 2022 NAT +2 marks -0 marks

Consider the process in the figure. The liquid phase elementary reactions

                       

occur in the continuous stirred tank reactor (CSTR), where π‘₯j is the mole fraction of the 𝑗th component (𝑗 = 𝐴, 𝐡, 𝑃, 𝑆) in the CSTR. It is given that π‘˜2 = π‘˜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 CSTR is zero. As π‘ž = π‘₯A /π‘₯B is varied at constant reactor temperature, the reactor volume is adjusted to maintain

a constant single-pass conversion of 𝐡. For a fixed product rate and 90% conversion of 𝐡 in the reactor, the value of π‘ž that minimizes the sum of the molar flow rates of the 𝐴 and 𝑆 recycle streams is ________ (round off to one decimal place).

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Browse Practice Questions by Chapters / Topics in Browse Practice Questions by Chapters / Topics in GATE Chemical Engineering
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Heat Transfer 26 0 0
Chemical Technology 17 0 0
Mechanical Operations 12 0 0
Mass Transfer 42 0 0
Instrumentation and Process Control 26 0 0
Fluid Mechanics 24 0 0
Engineering Mathematics 41 0 0
General Aptitude 60 0 0
Chemical Reaction Engineering 26 0 0
Process Calculation 9 0 0
Plant Design Economics 10 0 0
Thermodynamics 24 0 0
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