Up-to-date overview of the method for producing the main industrial gases This book covers process design for cryogenic processes like air separation, natural gas liquefaction, and hydrogen and helium liquefaction. It offers an overview of the basics of cryogenics and information on process design for modern industrial plants. Throughout, the book helps readers visualize the theories of thermodynamics related to cryogenics in practice. A central concept in the book is the connection between the theoretical world of process design and the real limitations given by available hardware components and systems. Sample topics covered in this book include: Cryogenic gases like nitrogen, oxygen, argon, neon, hydrogen, helium and methane Thermodynamics Typical cryogenic refrigeration processes, including the classic Joule Thomson process, the contemporary mixed-gas Joule Thomson process, and expander-based processes like Brayton and Claude cycles Helium and hydrogen liquefaction and air separation The book is a comprehensive must-have resource for engineers and scientists working in academia and industry on cryogenic processes.