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Solved: A catalytic reactor is used to produce

Elementary Principles of Chemical Processes | 4th Edition | ISBN: 9780470616291 | Authors: Richard M. Felder Ronald W. Rousseau, Lisa G. Bullard ISBN: 9780470616291 248

Solution for problem 4.75 Chapter 4.84

Elementary Principles of Chemical Processes | 4th Edition

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Elementary Principles of Chemical Processes | 4th Edition | ISBN: 9780470616291 | Authors: Richard M. Felder Ronald W. Rousseau, Lisa G. Bullard

Elementary Principles of Chemical Processes | 4th Edition

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Problem 4.75

A catalytic reactor is used to produce formaldehyde from methanol in the reaction CH3OH ! HCHO H2 A single-pass conversion of 60.0% is achieved in the reactor. The methanol in the reactor product is separated from the formaldehyde and hydrogen in a multiple-unit process. The production rate of formaldehyde is 900.0 kg/h. (a) Calculate the required feed rate of methanol to the process (kmol/h) if there is no recycle. (b) Suppose the unreacted methanol is recovered and recycled to the reactor and the single-pass conversion remains 60%. Without doing any calculations, prove that you have enough information to determine the required fresh feed rate of methanol (kmol/h) and the rates (kmol/h) at which methanol enters and leaves the reactor. Then perform the calculations. (c) The single-pass conversion in the reactor, Xsp, affects the costs of the reactor Cr and the separation process and recycle line Cs. What effect would you expect an increased Xsp would have on each of these costs for a fixed formaldehyde production rate? (Hint: To get a 100% singlepass conversion you would need an infinitely large reactor, and lowering the single-pass conversion leads to a need to process greater amounts of fluid through both process units and the recycle line.) What would you expect a plot of Cr Cs versus Xsp to look like? What does the design specification Xsp 60% probably represent?

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11/21/16 Lecture Chapter 11 Continued ● Vapor Pressure- the partial pressure of vapor over a liquid or solid at equilibrium ● Vapor- the gas phase of a substance that is solid or liquid at 25 degrees celsius and 1 atm ● Collecting a gas over water...

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Chapter 4.84, Problem 4.75 is Solved
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Textbook: Elementary Principles of Chemical Processes
Edition: 4
Author: Richard M. Felder Ronald W. Rousseau, Lisa G. Bullard
ISBN: 9780470616291

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Solved: A catalytic reactor is used to produce

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