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Direct debydrogenation of ethylbenzene to styrene is carried out in the vapor phase with catalyst consisting primarily of iron oxide. The reaction is endothermic, and can be accomplished either adiabatically or isothermally. Both methods are used in practice. The major reaction is the reversible, endothermic conversion of ethylbenzene to styrene and hydrogen: CHCH:CH CHCHCH2 + H₂ AH-124.9 kJ/mol Competing thermal reactions degrade ethylbenzene to benzene

Direct debydrogenation of ethylbenzene to styrene is carried out in the vapor phase with catalyst consisting primarily of iron oxide. The reaction is endothermic, and can be accomplished either adiabatically or isothermally. Both methods are used in practice. The major reaction is the reversible, endothermic conversion of ethylbenzene to styrene and hydrogen: CHCH:CH CHCHCH2 + H₂ AH-124.9 kJ/mol Competing thermal reactions degrade ethylbenzene to benzene

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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pls read the question carefully, i posted the same question more than one time but with different requirement. The subject name is Process plant design and safety, it's chemical engineering subject. Do not take the answer from other online platform like chegg

Direct debydrogenation of ethylbenzene to styrene is carried out in the vapor phase with steam over a catalyst consisting primarily of iron oxide. The reaction is endothermic, and can be accomplished either adiabatically or isothermally. Both methods are used in practice. The major reaction is the reversible, endothermie conversion of ethylbenzene to styrene and hydrogen: CHCH₂CH CHCHCH:+ H₂ AH-124.9 kJ/mol Competing thermal reactions degrade ethylbenzene to benzene CHCH₂CH→ CH+CaH₁ AH-101.8 kJ/mol Styrene also reacts catalytically to toluene: CH3CH2CH+ H2 CH3CH3 + CH4 AH-64.5 kJ/mol The reactions take place at 620°C. The costs are as shown in Table 1. The production rate of styrene is 200 mol/h. Chemical name Formula Cost (S/mol) Ethylbenzene CH-CH₂CH 57.1 Styrene C&HSCHCH₂ 75.9 Benzene CH 32.8 Tolucoe CHCH₂ 25.8 Hydrogen H₂ 1.2 (as fuel) Methane CH 4.0 (as fuel) Ethylene C₂H4 6.7 (as fuel) Correlation for the product selectivity and distribution are given as following equations. mol Styrene formed 0.2 S= = 1- mol Ethylbenzene converted (1-3 -x)05 Mol Benzene = 0.033S-0.215+2.547³ Mol Styrene explain how else to increase the styrene selectivity other than pressure?
Transcribed Image Text:Direct debydrogenation of ethylbenzene to styrene is carried out in the vapor phase with steam over a catalyst consisting primarily of iron oxide. The reaction is endothermic, and can be accomplished either adiabatically or isothermally. Both methods are used in practice. The major reaction is the reversible, endothermie conversion of ethylbenzene to styrene and hydrogen: CHCH₂CH CHCHCH:+ H₂ AH-124.9 kJ/mol Competing thermal reactions degrade ethylbenzene to benzene CHCH₂CH→ CH+CaH₁ AH-101.8 kJ/mol Styrene also reacts catalytically to toluene: CH3CH2CH+ H2 CH3CH3 + CH4 AH-64.5 kJ/mol The reactions take place at 620°C. The costs are as shown in Table 1. The production rate of styrene is 200 mol/h. Chemical name Formula Cost (S/mol) Ethylbenzene CH-CH₂CH 57.1 Styrene C&HSCHCH₂ 75.9 Benzene CH 32.8 Tolucoe CHCH₂ 25.8 Hydrogen H₂ 1.2 (as fuel) Methane CH 4.0 (as fuel) Ethylene C₂H4 6.7 (as fuel) Correlation for the product selectivity and distribution are given as following equations. mol Styrene formed 0.2 S= = 1- mol Ethylbenzene converted (1-3 -x)05 Mol Benzene = 0.033S-0.215+2.547³ Mol Styrene explain how else to increase the styrene selectivity other than pressure?
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