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Q1: - Formaldehyde can be made by the partial oxidation of natural gas using pure oxygen, natural gas being supplied in large excess. CH + 02 e) CH;0 + H,0 AHR--282.926 kJ/mol The following side reaction also occurs. CH e + 202 g-CO2p + 21;0 AHR--802.372 kJ/mol Feed streams of 50 mol/h of methane and 50 mol/h of pure oxygen are fed to a continuous reaetor. The exit stream molar flow rate is 100 mol/h. The mole fractions of formaldehyde and carbon dioxide are 0.15 and 0.05, respectively. Calculate the rate of heat that must be added to or removed from the reactor to maintain the reactor temperature at 150 "C. The mean heat capacities (J/mol "C) are given below: CH, 51.4, 02 31.9, CO; 46.3, CH;O 47.1, and H;0 36.3 %3D CH, 50 mol/h Flue gas 100 mol/h T-150 °C T-25 °C CHa + O CH,0 a+ H,0 0.05 CO 0.15 CH;0 CH, REACTOR CH, + 20, CO + 2H,0 e Pure O; 50 mol/h T-100 °C

Q1: - Formaldehyde can be made by the partial oxidation of natural gas using pure oxygen, natural gas being supplied in large excess. CH + 02 e) CH;0 + H,0 AHR--282.926 kJ/mol The following side reaction also occurs. CH e + 202 g-CO2p + 21;0 AHR--802.372 kJ/mol Feed streams of 50 mol/h of methane and 50 mol/h of pure oxygen are fed to a continuous reaetor. The exit stream molar flow rate is 100 mol/h. The mole fractions of formaldehyde and carbon dioxide are 0.15 and 0.05, respectively. Calculate the rate of heat that must be added to or removed from the reactor to maintain the reactor temperature at 150 "C. The mean heat capacities (J/mol "C) are given below: CH, 51.4, 02 31.9, CO; 46.3, CH;O 47.1, and H;0 36.3 %3D CH, 50 mol/h Flue gas 100 mol/h T-150 °C T-25 °C CHa + O CH,0 a+ H,0 0.05 CO 0.15 CH;0 CH, REACTOR CH, + 20, CO + 2H,0 e Pure O; 50 mol/h T-100 °C

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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Q1: - Formaldehyde can be made by the partial oxidation of natural gas using pure oxygen, natural gas being supplied in large excess. CH + O2 e)+ CH;0 4 + H20 () AHRX"=- 282.926 kJ/mol The following side reaction also occurs. CHa (e + 202 g -CO2 + 2H;0 e AHR=-802.372 kJ/mol Feed streamns of 50 mol/h of methane and 50 mol/h of pure oxygen are fed to a continuous reactor. The exit stream molar flow rate is 100 mol/h. The mole fractions of formaldehyde and carbon dioxide are 0.15 and 0.05, respectively. Calculate the rate of hcat that must be added to or removed from the reactor to maintain the reactor temperature at 150 "C. The mean heat capacities (J/mol "C) are given below: CH, 51.4, 02 31.9, CO, 46.3, CH2O 47.1, and H20 36.3 %3D CH4 50 mol/h T=25 °C Flue gas 100 mol/h T=150 °C CHa te+ O CH,0 a+ H,0 in REACTOR 0.05 CO 0.15 CH;0 CH + 20, i CO2 si+ 2H,0 el Pure O: 50 mol/h T-100 C CH4 H;0
Transcribed Image Text:Q1: - Formaldehyde can be made by the partial oxidation of natural gas using pure oxygen, natural gas being supplied in large excess. CH + O2 e)+ CH;0 4 + H20 () AHRX"=- 282.926 kJ/mol The following side reaction also occurs. CHa (e + 202 g -CO2 + 2H;0 e AHR=-802.372 kJ/mol Feed streamns of 50 mol/h of methane and 50 mol/h of pure oxygen are fed to a continuous reactor. The exit stream molar flow rate is 100 mol/h. The mole fractions of formaldehyde and carbon dioxide are 0.15 and 0.05, respectively. Calculate the rate of hcat that must be added to or removed from the reactor to maintain the reactor temperature at 150 "C. The mean heat capacities (J/mol "C) are given below: CH, 51.4, 02 31.9, CO, 46.3, CH2O 47.1, and H20 36.3 %3D CH4 50 mol/h T=25 °C Flue gas 100 mol/h T=150 °C CHa te+ O CH,0 a+ H,0 in REACTOR 0.05 CO 0.15 CH;0 CH + 20, i CO2 si+ 2H,0 el Pure O: 50 mol/h T-100 C CH4 H;0
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