RK4 - ABSTRACT In this experiment the performance of the...

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ABSTRACT In this experiment the performance of the homogeneous tubular reactor was studied. A reaction between caustic soda and ethyl acetate was performed in a plug flow reactor. A 25 ml sample was taken out from the reactor at different times for different flow rates. The sample was quenched with an acid to stop the reaction then it was titrated. The steady state concentration of the unreacted NaOH was found 0.0244, 0.031 and 0.0346 M while the conversion was found as 0.512, 0.38 and 0.344 for the flow rates of 50, 100 and 150 of the reactants respectively. The theoretical values of the concentration were found as 0.0216, 0.0306 and 0.0351 M where as the conversion was found as 0.569, 0.389 and 0.299 for the three different flows rate respectively. The space time also was calculated for each run to be 4 min for the first one, 1.93 min for the second and 1.29 min for the last one. The percentage difference for the concentration ranged between 0.65 and 11.11 and between 0.82 and 11.17 for the conversion. INTRODUCTION Batch, continuous stirred tank (CSTR), and tubular (plug) reactors are three commonly types of homogenous reactors. Tubular reactors or plug flow reactors have extensive application in industry because of the absence of the moving part.
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Since the concentration of the reactant will change along the axial path of the reactor flow, an element volume differential mass balance was made to give us C A0 dV C Af F A0 __________________ : ___ : ______________________ X A0 ===> FA, X A -----> : : ----->F A +dF A , X A +dX A ===> F Af , V f V 0 __________________ : ___ : ______________________ X Af The mass balance is input =output + disappearance by reaction + accumulation (1) Where: input of A, (moles/time) = F A output of A, (moles/time) = F A + dF A disappearance of A by reaction (moles/time) = r A * dV Substituting back these three terms into Eq. (1); then we get: F A = (F A + dF A ) + (-r A ) * dV (2) knowing that, dF
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This note was uploaded on 12/28/2010 for the course CHEMICAL CHEM 409 taught by Professor Abdullahal-shammari during the Fall '08 term at King Fahd University of Petroleum & Minerals.

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RK4 - ABSTRACT In this experiment the performance of the...

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