Instructor : Dr. Anand Bharti
Tuesday : 12:00 PM - 12:50 PM
Wednesday : 3:30 PM - 4:20 PM
Thursday : 3:30 PM - 4:20 PM
CL 217 CHEMICAL PROCESS CALCULATIONS
Credits L:2, T:1, P:0
Class per week 3 hrs
Semester/Level III/Second
Branch Chemical Engineering
COURSE OBJECTIVES
This course enables the students to:
Understand the fundamental concepts and calculations of process calculation.
Use basic, applied chemistry/ thermodynamics for material balance calculations for different unit operations and unit processes.
Use basic, applied chemistry/ thermodynamics for energy balance calculations for different unit operations and unit processes.
Understand the various heats and their calculations related to chemical reactions.
Develop understanding about humidity and usage of psychrometric chart.
COURSE OUTCOMES
After the completion of this course, students will be able to:
Apply the concept of dimension and unit conversion to check dimensional consistency of balanced equation and understand the specific terms used in process calculation.
Solve problems related to ideal and real gas and solution.
Solve material balance problems without chemical reactions.
Solve material balance problems with chemical reactions.
Solve energy balance problems of various unit processes.
SYLLABUS
Module I: Introduction to Stoichiometry:
Units and Dimensions: Conversion of Equations, Systems of Units, Dimensional Homogeneity and Dimensionless Quantities, Buckingham Pi-theorem for Dimensional Analysis, Introduction to Chemical Engineering Calculations: Basis, Mole Fraction and Mole Percent, Mass Fraction and Mass Percent, Concentration of different forms, Conversion from one form to another, Stoichiometric and composition relations, Excess & Limiting reactants, Degree of completion, Conversion, Selectivity and Yield.
Module II: Gas Calculations, Humidity & Saturation:
Gas laws-Ideal gas law, Dalton’s Law, Amagat’s Law, and Average molecular weight of gaseous mixtures. Vapour pressure, partial pressure, Vapour pressures of miscible, immiscible liquids and solutions. Real-gas relationships, Raoult’s Law, Henry’s law, Antoine’s Equation, Clausius Clapeyron Equation. PVT calculations using ideal and real gas relationships, Relative Humidity and percent saturation; Dew point, Dry and Wet bulb temperatures; Use of humidity charts for engineering calculations.
Module III: Material Balance without Chemical Reaction:
Unit Operations & Process Variables, Degree of Freedom Analysis, Application of material balances to single and multiple unit operations without chemical reactions involving distillation column, absorption column, evaporators, driers, crystallizer, liquid-liquid and liquid-solid extraction units, Unsteady state material balances.
Module IV: Material Balance with Chemical Reaction:
Material balances with Single Reaction & Multiple Reactions applicable to single and multiple unit operations, Recycle, purge, bypass in batch, stage wise and continuous operations in systems with or without chemical reaction. Material balances in combustion, gas-synthesis, acid-alkali production reactions.
Module V: Energy Balance:
Heat capacity of solids, liquids, gases and solutions, use of mean heat capacity in heat calculations, problems involving sensible and latent heats, Evaluation of enthalpy, Standard heat of reaction, heat of formation, combustion, solution mixing etc., Calculation of standard heat of reaction, Hess Law, Energy balance for systems with and without chemical reaction, Unsteady state energy balances.
Text books:
Haugen, P.A. Watson, K.M., Ragatz R.A Chemical Process Principles Part - I.
Himmelblau, D.M Basic Principles and Calculation in chemical engineering, Prentice Hall
Bhatt B.L.Vora, S.M Stoichiometry, Tata McGraw Hill Publishing Co. Ltd., New Delhi
Reference books:
Felder, R. M.; Rousseau, R. W., “Elementary Principles of Chemical Processes”, Third Edition, John Wiley & Sons, 2000.
Venkataramani, V., Anantharaman, N., Begum, K. M. MeeraSheriffa, “Process Calculations”, Second Edition, Prentice Hall of India.
Sikdar, D. C., “Chemical Process Calculations”, Prentice Hall of India
ASSESSMENT
First Quiz 10 Marks (Date: 08.09.2022, Thursday)
Mid Semester Examination 25 Marks (Date: 26.09.2022 onwards)
Second Quiz 10 Marks (Date: 19.10.2022, Wednesday)
Teacher’s Assessment 05 Marks
End Semester Examination 50 Marks (Date: 21.11.2022 onwards)
Course Delivery methods:
• Lecture by use of boards/LCD projectors.
• Tutorials.
• Assignments.
• Seminars/Term Projects.
• Self- learning such as use of NPTEL materials and internets.
Quizzes:
Apart from two compulsory quizzes, there will be several other quizzes at the end of each important topic/each module (Offline/online; 15-30 minutes; weightage: 5 marks ). The quizzes will cover conceptual problems. Material can and will be drawn from the lecture notes.
Midterms and Final:
There will be one mid semester (25 % weightage) and one end semester (50% weightage) exam. Exams will be closed book and closed notes. However, I will provide relevant equations during the exams. The exams will consist of conceptual problems and traditional problems. My intention is to help you develop your problem-solving skills as well as your conceptual understanding of the subject. Material can and will be drawn from the lecture notes.
Week Date Class Day Topic Link
Week 1 08.08.2022 1 Mon Course Introduction and Overview Lecture 1
Week 1 10.08.2022 2 Wed Systems of Units Lecture 2
Week 2 16.08.2022 3 Tues Introduction to Chemical Engg. Calculations Lecture 3
Week 2 17.08.2022 4 Wed Introduction to Chemical Engg. Calculations Lecture 4
Week 2 18.08.2022 5 Thurs Introduction to Chemical Engg. Calculations Lecture 5
Week 3 23.08.2022 6 Tues Chemical Reaction Stoichiometry Lecture 6
Week 3 24.08.2022 7 Wed Chemical Reaction Stoichiometry Lecture 7
Week 3 25.08.2022 8 Thurs Tutorial 1 Tutorial 1
Week 4 30.08.2022 9 Tues Tutorial 2 Tutorial 2
Week 4 31.08.2022 10 Wed Tutorial 2 Tutorial 2
Tutorial 1 Solution Tutorial 2 Solution
Lecture Notes (Section-A) Tutorial 1 (Section-A)
Week 4 01.09.2022 11 Thurs Ideal Gases & Ideal Gas Mixtures Lecture 8
Week 5 07.09.2022 12 wed Virial Equation of State Lecture 9
Week 5 08.09.2022 13 Thurs Cubic Equation of State Lecture 10
Week 6 13.09.2022 14 Tues Generalized Correlations for gases Lecture 11
Week 6 14.09.2022 15 wed Lecture 12
Week 6 15.09.2022 16 Thurs Lecture 13
Week 7 20.09.2022 17 Tues Lecture 14
Week 7 21.09.2022 18 wed Lecture 15
Week 7 22.09.2022 19 Thurs Lecture 16
Week 8 Midsem
Week 9 04.10.2022 and 05.10.2022 Holiday
Week 9 06.10.2022 20 Thurs Fundamentals of Material Balances Lecture 17
Week 10 11.10.2022 21 Tues Fundamentals of Material Balances Lecture 18
Week 10 12.10.2022 22 Wed Fundamentals of Material Balances Lecture 19
Week 11 18.10.2022 23 Tues Fundamentals of Material Balances Lecture 20
Week 11 19.10.2022 24 Wed Atomic species balances & Extent of reaction Lecture 21
Week 11 20.10.2022 25 Thurs MB with Rxn and Recycle & Purge Lecture 22
Week 11 21.10.2022 26 Fri Recycle & Purge Lecture 23
Week 12 26.10.2022 27 Wed Reaction, Recycle & Purge Lecture 24
Week 12 27.10.2022 28 Thurs Combustion Reactions Lecture 25
Tutorial 1 (Module-3) Tutorial 2 (Module-3)
Lecture Notes - Module 3 (Section-A) Tutorial - Module 3 (Section-A)
Week 13 01.11.2022 29 Tues Balances on Reactive Processes-I Lecture 26
Week 13 02.11.2022 30 Wed Balances on Reactive Processes-II Lecture-27
Week 13 03.11.2022 31 Thurs Balances on Reactive Processes-III Lecture-28 & 29
Week 14 09.11.2022 32 Wed Balances on Reactive Processes-IV Lecture-28 & 29
Week 14 10.11.2022 33 Thurs Tutorial (Module-5)
Week 15 16.11.2022 34 Wed Tutorial (Module-5) and Tutorial (Module-4)
Week 15 17.11.2022 35 Thurs Tutorial (Module-3) and Tutorial (Module-4)