VORTEX OIL GAS PROPANE-BUTANE FRACTION LIQUEFICATION PLANT Russian patent published in 2010 - IPC F25J1/00 F25B9/00 

FIELD: oil and gas production.

SUBSTANCE: in a liquefication plant, pre-cooling and deep chilling regenerative heat exchangers and an expansion turbine are series connected in the dry oil gas pipeline between a water separator and a vortex tube. In the pipeline connecting a "cold" end of the vortex and an ejector mixing chamber, there are a liquid propane-butane fraction separator and a "cold" section of the deep chilling regenerative heat exchanger. On a liquid phase, the liquid propane-butane fraction separator is connected by the pipeline through a modular container with a bend pipeline to a liquid propane-butane mix consumer. The output "hot" end of the vortex pipe through the pre-cooling regenerative and a turbocompressor is connected by a "hot" gas main flow pipeline with an active nozzle of the ejector. Rotors of the expansion turbine, turbocompressor and an electric motor are united by a common shaft. The peripheral "hot" part of the vortex pipe is connected by the humid gas bend pipeline to a mist extractor which is connected via separated moisture to the moisture output pipeline, and via dry gas to the ejector mixing chamber. The ejector output is connected through an airblower with the external gas pipeline.

EFFECT: effectiveness of the plant at low gas pressure.

2 dwg