Besides sales contract restrictions, several other reasons exist for the removal of acid components from natural gas streams. Among these are personnel safety, odor reduction, and fuel Btu improvement. The process of removing water vapor from a gas stream is called “gas dehydration. This presentation discusses conventional TEG dehydration and presents a method to size and design the glycol dehydration equipment. Compressors are used whenever it is necessary to flow gas from a low pressure system to a higher pressure system. This presentation provides guidelines on selecting the type of compressor to use for each application, determining power requirements, and designing the piping system associated with the compressor.