ABSTRACT
The material presented in this chapter includes two parts: the recovery and separation of natural gas liquid (NGL) constituents, and methods of fractionation into finished product streams suitable for sale. In the first part, several alternatives for the separation and recovery of NGL are detailed. They are essentially based on phase change either by using energy separating agent (ESA) or mass separating agent (MSA). Thus, partial liquefaction or condensation of some specific NGL constituents will lead to their separation from the bulk of the gas stream. Total condensation is also a possibility. The role of the operating parameters that influence phase change, hence NGL separation from the bulk of gas, is discussed. The second part of the chapter covers materials on fractionation facilities that are recommended to produce specification quality products from NGL. Types of fractionator with recommended feed streams as well as produced products are highlighted in this part.
