粗氦精制技术应用及展望

Application and prospects of crude helium purification technology

粗氦气中含有少量的烃类、氮气、氢气以及微量氖气等杂质,为生产纯氦、高纯氦等合格的氦气产品,应对粗氦气进行精制处理。近年来随着中国氦气产业技术与装备的快速发展,粗氦精制技术发展迅速,实现了大规模的工业化应用。介绍了粗氦精制技术的应用场景;综述了粗氦精制中催化脱氢、变压吸附、低温吸附等技术的原理和指标以及典型工艺流程;详细分析了典型粗氦精制工业化应用的技术路线、流程设置和产品指标;最后展望了未来粗氦精制技术的发展方向。

Crude helium contains small quantities of hydrocarbons,nitrogen,hydrogen and trace amounts of neon and other impurities.In order to produce certified helium products such as pure helium and high purity helium,it is essential to purify crude helium.In recent years,with the rapid advancement of technology and equipment in China s helium industry,crude helium purification technology has rapidly progressed,achieving large-scale industrial application.This paper introduces the application scenarios of crude helium purification technology,reviews the principles,indicators and typical process flow of catalytic dehydrogenation,Pressure Swing Adsorption(PSA)and low temperature adsorption in crude helium purification.It provides a detailed analysis of the technical paths,process flow arrangement and product indicators of typical industrial application for crude helium purification and concludes with a perspective on the future direction of technological development in crude helium purification.