摘要
由于国内天然气中氦浓度低，致使目前的深冷法提氦成本较高。为降低提氦成本，膜分离—深冷联合法〔１〕颇具潜力。采用聚砜／硅橡胶中空纤维膜从天然气中提浓氦的现场实验，在进口压力１．４～１．９ＭＰａ，常温下经一级膜分离使氦浓缩５～５．５倍，氦收率达到６３％～７５％；此时膜的处理能力为１．０ｍ３／ｈ·ｍ２膜面积。
he cost of extracting helium by cryogenic method is higher because of the natural gas with a low concentration in China. The method combined permeation with crogenic is good for reducing the cost.The experimental results of helium recovery from natural gas by polysulfone hollow fiber membranes are reported.At the feed rate of 1. 0 m3/h·m2 membrane and feed pressures of 1. 4～1. 9 MPa,helium can be enriched in the permeation by a factor of 5～5. 5 with helium recoveries of 63%～75 %.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
1995年第6期66-69,共4页
Natural Gas Industry
关键词
天然气
氦
膜分离
提纯
Natural gas
Helium
Membrane permeation
Extraction
Testing.
