ABSTRACT
Understanding gas processing technology requires knowing some basic terminology, chemistry, and concepts. This chapter discusses the basic units in both U.S. Engineering System (USES) and International System of Units (SI) that are needed in gas processing. This includes the various standard conditions required to define the standard volumes commonly used. It then briefly discusses chemical structure and nomenclature of compounds seen in gas processing. The chapter covers important physical properties and how to estimate properties of mixtures. Two important product specification methods, copper strip test and Reid vapor pressure, are described. The chapter concludes with an overview of energy properties and discussion of the important pressure–enthalpy (PH) diagrams used for gas compression, refrigeration, and expansion.
