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Ethylene oxide is prepared by oxidation of ethylene. 100 kmol of ethylene and 80 kmol of oxygen are charged to a reactor. The per cent conversion of ethylene is 47 and percent yield of ethylene oxide is 81. Calculate the composition of product stream leaving the reactor. The reactions taking place are: C2H4 + ½ O2  C2H4O and C2H4 + 3O2  2CO2 + 2H2O

Ethylene oxide is prepared by oxidation of ethylene. 100 kmol of ethylene and 80 kmol of oxygen are charged to a reactor. The per cent conversion of ethylene is 47 and percent yield of ethylene oxide is 81. Calculate the composition of product stream leaving the reactor. The reactions taking place are: C2H4 + ½ O2  C2H4O and C2H4 + 3O2  2CO2 + 2H2O

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Ethylene oxide is prepared by oxidation of ethylene. 100 kmol of ethylene and 80 kmol of oxygen are charged to a reactor. The per cent conversion of ethylene is 47 and percent yield of ethylene oxide is 81. Calculate the composition of product stream leaving the reactor. The reactions taking place are: C2H4 + ½ O2  C2H4O and C2H4 + 3O2  2CO2 + 2H2O
5:11 器“9山84%4 books.google.co.in/boc ews Gmail Drive More - gohilkalpesh381@gmail.com - < > Add to my library Write review Page 4-5 - Result 1 of 1 for The Carbon Monoxide is reacted with Hydrogen to produce Methanol. Calculate from the reaction: (a) The Stoichiometric Ratio of H2 to CO. (b) kmol of CH30H produced per kmol of CO reacted. (c) The weight ratio of CO to H2 if they are fed to reactor in stoichiometric proportion. (d) The quantity of CO required producing 1250 kg of CH3OH. Reaction: co + 2H2 CH3OH Clear search X Consider the parallel reactions A- C and A → D, where C is the desired product and D is the undesired product, in this case, selectivity is given as moles of C (desired product) formed moles of D (undesired product) formed Selectivity of C relative to D Selectivity is also defined as the ratio of amount of the limiting reactant to the desired product to the amount of it reacted to produce the undesired product. If yield is 100%, then the selectivity is 1. Ex. 4.1: The carbon monoxide is reacted with hydrogen to produce methanol. Calculate from the reaction : (a) The stoichiometric ratio af H2 to CO. (b) kmol of CH3OH produced per kmol CO reacted. (c) The weight ratio of CO to H, if both are fed to reactor in stoichiometric proportion. (d) The quantity of CO required to produce 1000 kg of CH,OH. Sol. : Reaction : CO + 2H2 → CH,OH From reaction, we have, Stoichiometric coefficient of CO = a = 1 Stoichiometric coefficient of H2 = b = 2 Copyrighted materia Stoichiometry Material Balances with Chemical Reactions 4.5 Stoichiometric ratio of Hz to CO = . Ans. (a) ... From reaction, we have, 1 kmol CO = 1 kmol CH,OH . =x1 = CO reacted to produce 1 kmol CH,OH = 1 kmol ... Ans. (b) CO fed to reactor = 1.0 kmol Co fed to reactor - 1x28 = 28 kg H, fed to reactor in stoichiometric proportion with CO = 2 kmol H, fed to reactor = 2x2 = 4 kg 28 Weight ratio of CO to H2 fed = = 7 .... Ans. (c) 4 From reaction, 1 1 kmol CO 1 kmol CH,OH 28 kg CO = 32 kg CH,OH Amount of CO required to produce 1000 kg CH3OH * x 1000 = 875 kg ... Ans. (d) Ex. 4.2 : Ammonia is produced by the following reaction : N, + 3 H, + 2 NH, Calculate : (a) The molal flow rate of hydrogen corresponding to nitrogen feed rate of 25 kmol/h if they are fed in the stoichiometric proportion. (b) The kg of ammonia produced per hour if percent conversion is 25 and nitrogen feed rate is 25 kmol/h. Hint : Here basis of calculation is defined which is 25 kmol/h of N2 fed. Write down chemical reaction (N, + 3 H2 = 2 NH3). Refer to the reaction. From reaction, it is clear that stoichiometric requirement of H2 for 1 kmol Na is 3 kmol. So caleulate the stoichiometric requirement of Hz for 25 kmol/h of Na fed to get the answer (a). With the help of % conversion and Ng fed, calculate Na reacted. Refe. to chemical reaction. From the reaction, it is ciear that 2 kmol of NH. will be produced from one kmol of No reacted. So get the kmol NH. ENGLISH GUJARATI
Transcribed Image Text:5:11 器“9山84%4 books.google.co.in/boc ews Gmail Drive More - gohilkalpesh381@gmail.com - < > Add to my library Write review Page 4-5 - Result 1 of 1 for The Carbon Monoxide is reacted with Hydrogen to produce Methanol. Calculate from the reaction: (a) The Stoichiometric Ratio of H2 to CO. (b) kmol of CH30H produced per kmol of CO reacted. (c) The weight ratio of CO to H2 if they are fed to reactor in stoichiometric proportion. (d) The quantity of CO required producing 1250 kg of CH3OH. Reaction: co + 2H2 CH3OH Clear search X Consider the parallel reactions A- C and A → D, where C is the desired product and D is the undesired product, in this case, selectivity is given as moles of C (desired product) formed moles of D (undesired product) formed Selectivity of C relative to D Selectivity is also defined as the ratio of amount of the limiting reactant to the desired product to the amount of it reacted to produce the undesired product. If yield is 100%, then the selectivity is 1. Ex. 4.1: The carbon monoxide is reacted with hydrogen to produce methanol. Calculate from the reaction : (a) The stoichiometric ratio af H2 to CO. (b) kmol of CH3OH produced per kmol CO reacted. (c) The weight ratio of CO to H, if both are fed to reactor in stoichiometric proportion. (d) The quantity of CO required to produce 1000 kg of CH,OH. Sol. : Reaction : CO + 2H2 → CH,OH From reaction, we have, Stoichiometric coefficient of CO = a = 1 Stoichiometric coefficient of H2 = b = 2 Copyrighted materia Stoichiometry Material Balances with Chemical Reactions 4.5 Stoichiometric ratio of Hz to CO = . Ans. (a) ... From reaction, we have, 1 kmol CO = 1 kmol CH,OH . =x1 = CO reacted to produce 1 kmol CH,OH = 1 kmol ... Ans. (b) CO fed to reactor = 1.0 kmol Co fed to reactor - 1x28 = 28 kg H, fed to reactor in stoichiometric proportion with CO = 2 kmol H, fed to reactor = 2x2 = 4 kg 28 Weight ratio of CO to H2 fed = = 7 .... Ans. (c) 4 From reaction, 1 1 kmol CO 1 kmol CH,OH 28 kg CO = 32 kg CH,OH Amount of CO required to produce 1000 kg CH3OH * x 1000 = 875 kg ... Ans. (d) Ex. 4.2 : Ammonia is produced by the following reaction : N, + 3 H, + 2 NH, Calculate : (a) The molal flow rate of hydrogen corresponding to nitrogen feed rate of 25 kmol/h if they are fed in the stoichiometric proportion. (b) The kg of ammonia produced per hour if percent conversion is 25 and nitrogen feed rate is 25 kmol/h. Hint : Here basis of calculation is defined which is 25 kmol/h of N2 fed. Write down chemical reaction (N, + 3 H2 = 2 NH3). Refer to the reaction. From reaction, it is clear that stoichiometric requirement of H2 for 1 kmol Na is 3 kmol. So caleulate the stoichiometric requirement of Hz for 25 kmol/h of Na fed to get the answer (a). With the help of % conversion and Ng fed, calculate Na reacted. Refe. to chemical reaction. From the reaction, it is ciear that 2 kmol of NH. will be produced from one kmol of No reacted. So get the kmol NH. ENGLISH GUJARATI
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