化工进展2016，Vol.35Issue(z2)：20-23,4.DOI:10.16085/j.issn.1000-6613.2016.s2.003
气体置换技术研究进展
Research progress of gas displacement technology
摘要
Abstract
In the industrial production and scientific experiment,for security reasons or protection of the product,the initial gas in the pipeline,vessel or confined space should be replaced with inert gas or other gases.The paper introduces the recent research and application progress of gas displacement in the areas of chemical,aerospace and cryogenics.The focus is on the research and application situation of the displacement of natural gas pipeline,rocket’s liquid hydrogen filling system,LNG cryogenic storage tank,atmospheric thermal environment experiment and other fields.The displacement of coal mine gas, cryogenics liquid pipeline is also introduced.The lack of research and calculation of the basic theory of gas displacement technology in many applications is proposed.Especially,in order to grasp the gas mixing mechanism and influence factors of displacement,theoretical analysis and experimental verification are urgent need for more to obtain low dew point in the atmospheric thermal environment experiment by nitrogen displacement.关键词
氢/气体/置换/天然气/航天/低温Key words
hydrogen/gas/displacement/natural gas/aerospace/cryogenics分类
航空航天引用本文复制引用
张良俊,吴静怡..气体置换技术研究进展[J].化工进展,2016,35(z2):20-23,4.基金项目
国家重大科技专项载人航天与探月工程、高分辨对地观测系统研制保障条件统筹建设项目及上海市科学技术委员会资助项目(06dz22105)。 （06dz22105）
