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Course Detail

Course Name Material Balances
Course Code 19CHE101
Program B. Tech. in Chemical Engineering
Semester Two
Year Taught 2019


Unit - 1

Chemical engineer vs. Chemist, Careers in Chemical engineering, Chemical engineering Industries; Chemical engineering approach-Streams, Units and Processes; Unit operations and processes: Fluid and solid operations, Heat transfer

operations, Mass transfer and separation operations, Chemical reactors, Control of processes, Costing and Economics,

Representing streams: Dimensions and unit conversions, Conversion factors, Dimensional consistency, Dimensionless numbers in chemical engineering, Representing compositions of mixtures and solutions: Binary and tertiary mixtures,

Compound stoichiometry, Representing gas phases: Ideal gas law, P-V-T calculations, Partial pressures and pure component volumes in mixtures. Representing reactions: Reaction stoichiometry, Conversion, Yield, Selectivity, Limiting and excess reactants, Dissociating gases. Representing moist gases: Humidity, Wet and dry bulb temperatures, Humidity chart

Unit - 2

Material balance-Control volume, Conservation of mass and species in a unit; Steady and unsteady state processes, Batch and Continuous processes; Basis for calculation; Degrees of freedom; Steady and unsteady material balance in unit operations: Evaporation; Crystallization; Leaching; Adsorption; Dying; Liquid-Liquid Extraction; Absorption; Distillation; Recycle, Bypass and Purge

Unit - 3

Combustion : Orsat analysis, Proximate and ultimate analysis of coal; Single-pass and overall conversions; Oxidation of sulphur compounds; Reactions involving phosphorous; Reactions involving nitrogen; Reactions involving chlorine; Extraction of metals from ores; Hydrogenation, hydration and oxidation; Electrochemical reactions; Recycle bypass and purge involving reactions

Evaluation Pattern

Periodical I: 15%

Periodical II: 15%

Continuous Assessment: Open book tests, Quizzes, Assignments: 20% End semester Examination: 50%

Objectives and Outcomes

Course Outcomes

CO Code Course outcome statement
CO01 Understand the fundamental concepts of stoichiometry and identifying process variables and properties and develop systematic problem-solving skills
CO02 Ability to make and solve material balance equations on unit operations and processes
CO03 Ability to perform material balances with chemical reactions
CO04 Ability to perform material balances involving multiple unit operations

CO-PO Mapping

CO Code PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO 10 PO 11 PO 12 PSO 1 PSO2 PSO3
CO01 3 3 2 2 2 2
CO02 3 3 3 3 2 3 2
CO03 3 3 3 3 2 3 2
CO04 3 3 3 3 2 2 3

Justification of CO-PO Mapping

CO1 strongly maps to PO1, PO2 as they require basic engineering knowledge and problem analysis skills to solve problems involving the compositions of solids, liquids, gases. Operations in which handling gases, gas mixtures and chemical conversions involving gases are quite common in chemical process industries.CO2 and CO3 evolves with the formulation of material balance equations for various unit operations with and without chemical reactions. The calculations involving the quantities of the material requirement in such processes as well as the effect of operating parameters are dealt by chemical engineers. Material balances helps in the planning and design of processes, control and optimization. In order to produce an end product from the given raw materials and for an appropriate choice of the process, it is important to estimate the material requirement.CO2 to CO4 maps strongly to PO5 with credit 2 as we could make use of software tools to solve material balance equations.CO2 and CO3 strongly maps to PO1 to PO4 and PSO1, PSO2 as they need to design, analyze and develop solutions for problems related to unit operations and processes.CO4 involves complex calculations where multiple units are considered and is mapped strongly with PSO2 apart from PO1to PO4.

Textbook / References


  1. Hatt, L, and Vora, S.M Stoichimetry,3rd Edition, Tata McGraw Hill, New Delhi,1996.
  2. V. Narayanan & B. Lakshmikutty Stoichiometry and Process Calculations, Prentice Hall of India, New Delhi, 2009.
  3. Murphy, M., Introduction to Chemical Processes: Principles, Analysis, Synthesis, McGraw Hill International Edition, NewYork,2007.


  • David M Himmelblau, Basic principles and calculations in chemical engineering,6th edition, Prentice Hall Inc., New York,2003.
  • Richard M Felder & Ronald W. Rousseau Elementary Principles of Chemical Processes,3rd edition, John Wiley and Sons, New York,2003.
  • Ougen, A Watson K.M., and Ragatz, R.A Chemical Process Principles Part I, CBS Publishers,1973. 4.Lewis W.K, Radesh A.H., and Lewis H.C., Industrial Stoichiometry, McGraw Hill Book Inc., New York,1995

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