CBE20255

CBE20255 Introduction to Chemical Engineering Analysis demonstrates the use of mass and energy balances for the analysis of chemical processes and products. The notebooks in the repository show how to prepare and analyze conceptual flowsheets for chemical processes, perform generation-consumption analysis, and perform basic engineering calculations for stoichiometry, reactor performance, separations, and energy analysis.

The notebooks demonstrate these basic chemical engineering calculations using Python. The notebooks can be open directly in Google Colaboratory where they can be run, edited, shared, and saved to your Google Drive. Alternatively, the notebooks can be downloaded and executed on your computer. These notebooks were developed and tested using the Anaconda distribution.

Table of Contents

Getting Started

• 0.1 Jupyter Notebooks, Python, and Google Colaboratory
• 0.2 Solving Linear Equations with Simpy

Chapter 1.0 Units, Quantities, and Engineering Calculations

• 1.1 Units and Engineering Calculations
• 1.2 Units and Conversions for Home Heating

Chapter 2.0 Stoichiometry

• 2.1 Balancing Reactions
• 2.2 Generation Consumption Analysis

Chapter 3.0 Process Flows and Balances

• 3.1 Global CO₂ Budget
• 3.2 CO₂ Production by Automobiles
• 3.4 Separating Milk
• 3.5 Adipic Acid Flowsheet

Chapter 4.0 Material Balances

• 4.1 Lean NO_x Trap
• 4.2 Ethylene Oxide Flowsheet
• 4.3 General Mass Balance on a Single Tank
• 4.4 Unsteady-State Material Balances

Chapter 5.0 Reactors

• 5.1 Dehydrogenation of Propane
• 5.2 Steam Reforming of Methane

Chapter 6.0 Vapors and Gases

• 6.1 PVT Computations for Non-ideal Gases
• 6.2 Hydrogen Storage in a Fuel Cell Vehicle

Chapter 7.0 Vapor/Liquid Equilibrium

• 7.1 Gases with One Condensable Component
• 7.2 Vapor-Liquid Equilibrium for Pure Components
• 7.3 Operating Limits for a Methanol Lighter
• 7.4 Raoult Law for Ideal Mixtures
• 7.5 Henry Law Constants
• 7.6 Binary Phase Diagrams for Ideal Mixtures
• 7.7 Bubble and Dew Points for Binary Mixtures
• 7.8 Bubble and Dew Points for Multicomponent Mixtures
• 7.9 Isothermal Flash and the Rachford-Rice Equation
• 7.10 Binary Distillation with McCabe-Thiele

Chapter 8.0 Energy Balances

• 8.1 Energy Balances on a Classroom
• 8.2 Water and Steam Calculator
• 8.3 Basic Energy Computations
• 8.4 Energy Balances for a Steam Turbine
• 8.5 Humidity and Psychrometrics
• 8.6 Adiabatic Flame Temperature
• 8.7 Torpedo Propulsion

Appendix A. Products: Product Design and Analysis

• A.1 Diesel Engine Emissions Control
• A.2 Pyrotechnic Design for Airbags
• A.3 Flameless Cooking
• A.4 Artificial Gills for Underwater Breathing?

Appendix B. Projects: Process Systems Analysis

• B.1 West Virginia Chemical Spill
• B.2 Ajka Alumina Plant Spill

Note on the use of Python. The Python used in these notebooks is deliberately limited to a core set of language features. These notebooks use scalar variables and lists of scalar variables to represent data. Also used are arithmetic, math, print, and plotting functions from the matplotlib.pyplot library. Functions created with def and lambda are used when root-finding calculations are required. List comprehesions are used on occasion when the result is more readable code. The Sympy library for symbolic math is used extensively for writing mass balances. Other libraries included numpy, math, and the root-finding functions from scipy.optimize. Notebooks with more advanced use of Python, such as dictionaries, are marked with an asterisk.

License Requirements. The materials in this repository are available at https://github.com/jckantor/CBE20255.git for noncommercial use under terms of the Creative Commons Attribution Noncommericial ShareAlike License. You are invited to fork this repository, and to use, adapt, remix these material for non-commericial purposes. The license terms require you to give attribution and share your work under the same terms. Pull requests for corrections and additions to these materials are most welcome.

Acknowledgements. Several notebooks embed videos from LearnChemE hosted at the University of Colorado at Boulder and sponsored by the National Science Foundation (NSF) and Shell Corporation. Permission to use these videos is gratefully acknowledged.