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Title: The Cryex System For Liquefaction Of Natural Gas With Removal Of Carbon Dioxide By Freeze Separation
Author: Y. A. Selcukoglu, T. A. Gallagher, R. J. Dortwegt
Source: American Gas Association 1980
Year Published: 1980
Abstract: Several of the components of natural gas can be sohd forming contaminants when the mixture is cooled in the liquefaction process. The most troublesome contaminants are water, carbon dioxide, and to a lesser degree, sulfur compounds. Other contaminants include heavy hydrocarbons such as hexane, benzene and lubricating oils. Failure to remove these contaminants before cooling and liquefying natural gas can result in solid phase formations which foul heat exchange surfaces, block flow passages in heat exchangers and valves, and interfere with the operation of pumps. The CRYEX freeze separation system for removal of these contaminants offers an alternative to gas stream pre-treatment. The CRYEX system has been successfully installed and demonstrated at two commercial liquefied natural gas (LNG) peak shaving facilities.