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Hydrogen cyanide may be produced from methane, ammonia and oxygen by the Andrussov process: NH3(g) + CH. (g) + 1.50₂ (g) → HCN (g) + 3H₂O(g) Consider the following process in which 1.20 kmol/min of a gas mixture containing 26.0 mol% NH3, 31.0 mol % CH4, and 43.0 mol % O₂ is fed to a reactor. The feed stream is at 100.0°C. In the reactor NH3, CH4, and O₂ are consumed to produce HCN and H₂O according to the above equation. a) If 1913 kW of heat is removed from the reactor and the exit gas temperature is 170.0°C, calculate the composition of the exit gas and the conversion of NH3. Given data: Standard heat of formation and specific heat capacities. Standard heat of formation (AA) NH, (9) CH₂ (g) HCN (g) H₂O (g) -45.90 kJ/mol -74.85 kJ/mol 135.14 kJ/mol -241.80 kJ/mol

Hydrogen cyanide may be produced from methane, ammonia and oxygen by the Andrussov process: NH3(g) + CH. (g) + 1.50₂ (g) → HCN (g) + 3H₂O(g) Consider the following process in which 1.20 kmol/min of a gas mixture containing 26.0 mol% NH3, 31.0 mol % CH4, and 43.0 mol % O₂ is fed to a reactor. The feed stream is at 100.0°C. In the reactor NH3, CH4, and O₂ are consumed to produce HCN and H₂O according to the above equation. a) If 1913 kW of heat is removed from the reactor and the exit gas temperature is 170.0°C, calculate the composition of the exit gas and the conversion of NH3. Given data: Standard heat of formation and specific heat capacities. Standard heat of formation (AA) NH, (9) CH₂ (g) HCN (g) H₂O (g) -45.90 kJ/mol -74.85 kJ/mol 135.14 kJ/mol -241.80 kJ/mol

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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QUESTION 3 Hydrogen cyanide may be produced from methane, ammonia and oxygen by the Andrussov process: NH3(g) + CH4 (g) + 1.50₂ (g) → HCN (g) + 3H₂O (g) Consider the following process in which 1.20 kmol/min of a gas mixture containing 26.0 mol% NH3, 31.0 mol % CH4, and 43.0 mol % O₂ is fed to a reactor. The feed stream is at 100.0°C. In the reactor NH3, CH4, and O₂ are consumed to produce HCN and H₂O according to the above equation. a) If 1913 kW of heat is removed from the reactor and the exit gas temperature is 170.0°C, calculate the composition of the exit gas and the conversion of NH3. Given data: Standard heat of formation and specific heat capacities. b. Given data: Acetylene (C₂H₂) may be formed from methane (CH4) by pyrolyzing-decomposing at high temperature according to the reaction: 2CH4 (g) → C₂H₂ (g) + 3H₂(g) In a commercial reactor system, the methane is supplied as a liquid at 25°C to a heater where it is heated and vapourised leaving as a vapour at 650°C. The vapour then passes to the catalytic reactor in which a conversion of 40% is achieved. It may be assumed that there are no other reactions, that operation is at a pressure of one atmosphere and that the stream leaving the reactor is all in the vapour state. With a complete block diagram of the process, determine the heat transfer rate (Kw) required to the reactor if it is operated isothermally. Evaluate on the value of the heat transfer rate obtained from your calculation. Standard heat of formation (AF) NH3 (9) CH₁ (g) HCN (g) H₂O (g) Component Methane Acetylene Hydrogen -45.90 kJ/mol -74.85 kJ/mol 135.14 kJ/mol -241.80 kJ/mol Standard heat of formation and heat capacity AH (KJ/mol) State liquid gas liquid gas gas -74.85 www 226.75 Cp (KJ/mol-K) www 0.34 ww 0.42 0.059 The Cp values may be assumed independent of temperature
Transcribed Image Text:QUESTION 3 Hydrogen cyanide may be produced from methane, ammonia and oxygen by the Andrussov process: NH3(g) + CH4 (g) + 1.50₂ (g) → HCN (g) + 3H₂O (g) Consider the following process in which 1.20 kmol/min of a gas mixture containing 26.0 mol% NH3, 31.0 mol % CH4, and 43.0 mol % O₂ is fed to a reactor. The feed stream is at 100.0°C. In the reactor NH3, CH4, and O₂ are consumed to produce HCN and H₂O according to the above equation. a) If 1913 kW of heat is removed from the reactor and the exit gas temperature is 170.0°C, calculate the composition of the exit gas and the conversion of NH3. Given data: Standard heat of formation and specific heat capacities. b. Given data: Acetylene (C₂H₂) may be formed from methane (CH4) by pyrolyzing-decomposing at high temperature according to the reaction: 2CH4 (g) → C₂H₂ (g) + 3H₂(g) In a commercial reactor system, the methane is supplied as a liquid at 25°C to a heater where it is heated and vapourised leaving as a vapour at 650°C. The vapour then passes to the catalytic reactor in which a conversion of 40% is achieved. It may be assumed that there are no other reactions, that operation is at a pressure of one atmosphere and that the stream leaving the reactor is all in the vapour state. With a complete block diagram of the process, determine the heat transfer rate (Kw) required to the reactor if it is operated isothermally. Evaluate on the value of the heat transfer rate obtained from your calculation. Standard heat of formation (AF) NH3 (9) CH₁ (g) HCN (g) H₂O (g) Component Methane Acetylene Hydrogen -45.90 kJ/mol -74.85 kJ/mol 135.14 kJ/mol -241.80 kJ/mol Standard heat of formation and heat capacity AH (KJ/mol) State liquid gas liquid gas gas -74.85 www 226.75 Cp (KJ/mol-K) www 0.34 ww 0.42 0.059 The Cp values may be assumed independent of temperature
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