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As one of the Intern at AAMJ Chemicals Fertiliser Kedah Sdn. Bhd., you are requested by the Plant Manager to study ammonia production process. You are given a problem below and he would like you to solve the problem in 30 minutes.

As one of the Intern at AAMJ Chemicals Fertiliser Kedah Sdn. Bhd., you are requested by the Plant Manager to study ammonia production process. You are given a problem below and he would like you to solve the problem in 30 minutes.

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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As one of the Intern at AAMJ Chemicals Fertiliser Kedah Sdn. Bhd., you are requested by the Plant Manager to study ammonia production process. You are given a problem below and he would like you to solve the problem in 30 minutes. One way to produce ammonia is from hydrogen and nitrogen gaseous reaction. Iron is used as catalyst in the reaction at high temperature and pressure. To make the process cheaper, air is used as a source for nitrogen while oxygen is considered as non-reactive gas in the process. (a) Write the complete reaction for the process. (b) Calculate the standard heat of reaction (kJ/mol) by using heat of formation method. (c) Draw and label the process flow diagram completely. (d) The nitrogen gas fed is 50% in excess while the hydrogen gas fed is completely reacted. Calculate the molar amount (mole) of the reactants and products. (e) By using heat of formation method and Table B.2 (Table B.8 is not allowed), prepare an inlet-outlet enthalpy table and estimate the amount of heat added to or removed (please state) in kJ per kmol of hydrogen fed if the products leave the reactor at 400°C. (f) Nitrogen gas is used in excess in this reaction instead of hydrogen gas. Justify this statement. (g) Pure nitrogen gas would be preferred instead of nitrogen from air. Clarify this suggestion.
Transcribed Image Text:As one of the Intern at AAMJ Chemicals Fertiliser Kedah Sdn. Bhd., you are requested by the Plant Manager to study ammonia production process. You are given a problem below and he would like you to solve the problem in 30 minutes. One way to produce ammonia is from hydrogen and nitrogen gaseous reaction. Iron is used as catalyst in the reaction at high temperature and pressure. To make the process cheaper, air is used as a source for nitrogen while oxygen is considered as non-reactive gas in the process. (a) Write the complete reaction for the process. (b) Calculate the standard heat of reaction (kJ/mol) by using heat of formation method. (c) Draw and label the process flow diagram completely. (d) The nitrogen gas fed is 50% in excess while the hydrogen gas fed is completely reacted. Calculate the molar amount (mole) of the reactants and products. (e) By using heat of formation method and Table B.2 (Table B.8 is not allowed), prepare an inlet-outlet enthalpy table and estimate the amount of heat added to or removed (please state) in kJ per kmol of hydrogen fed if the products leave the reactor at 400°C. (f) Nitrogen gas is used in excess in this reaction instead of hydrogen gas. Justify this statement. (g) Pure nitrogen gas would be preferred instead of nitrogen from air. Clarify this suggestion.
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