Research and development of helium-extraction from natural gas
Helium is a strategic resource widely used in defense and high-tech industries.The main source of industrialization in helium extraction is helium-type natural gas.There are few natural gas re-sources containing helium in China's proven natural gas,and a small amount of natural gas resources containing helium also have low helium content.Helium resources are extremely precious and difficult to extract.The technology at home and abroad is introduced and summarized:PSA(pressure swing adsorp-tion)method and membrane separation method own the simple flow and high purity of helium product;cryogenic method,although it suffers from high consumption in energy,is a mature technology with high recovery of helium and is currently the widely used technology.Integrated helium-extraction technologies are a combination of multiple technologies for separation,such as helium extraction integrated with cryo-genic method and membrane separation,light hydrocarbon recovery and denitrification,hydrate and cata-lytic dehydrogenation,which improving the recovery and purity of helium and reduced the cost,thus have broad prosperity of application.
heliumhelium-extraction from natural gastraditional methodsintegrated methodspro-gress
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