This book is meant for those pursuing a senior course in process design. It can also be used by entry-level process engineers and those offering a short course. It will also help people before learning how to use process simulation software. This book contains many examples and case studies that are essential in this sphere. The book also puts more emphasis on the calculations required for the preliminary design. Before one goes in for process design, he or she must be well acquainted with chemical engineering prerequisites that are mass and energy balances, transport phenomenon, reactor design, thermodynamics, and separator design.