User:Milton Beychok/Sandbox
A turboexpander, also referred to as a turbo expander, expansion turbine or simply expander, is a centrifugal or axial flow turbine through which a high pressure gas is expanded to produce work that is typically used to drive a gas compressor. Because work is extracted from the expanding high pressure gas, the expansion is an isentropic process (i.e., a constant entropy process) and the low pressure exhaust gas from the turbine is at a very low temperature, often as low as 200 K (-100 °F) or less. Turbo-expanders are very widely used as sources of refrigeration in industrial processes such as the extraction of ethane and natural gas liquids (NGLs) from natural gas[1]; the liquefaction of gases;[2][3][4][5] and other low-temperature processes.
References
- ↑ Hydrocarbon gas processing U.S Patent 69155662 (includes a flow diagram of a demethanizer)
- ↑ BOC (NZ) publication: use search function for keyword "expansion"
- ↑ US Department of Energy Hydrogen Program
- ↑ Air Product Co. publication: use search function for keyword "expansion"
- ↑ India Department of Atomic Energy publication: use search function for keyword "expansion"