焦炉气低温氢分离流程制冷循环  

The refrigeration cycle of cryogenic hydrogen separation from coke-oven gas

作　　者：昌锟[1] 李青[1] 李强[1] 

机构地区：[1]中国科学院理化技术研究所

出　　处：《低温与超导》2007年第5期387-390,394,共5页Cryogenics and Superconductivity

基　　金：国家863计划项目(2006AA05Z128)资助

摘　　要：我国每年随焦炉气排放到环境中的氢气是数百亿立方米。文中提出分区液化的低温分离法将焦炉气中的氢分离并同时液化。通过CH4及N2的理想蒸汽制冷循环计算,结果表明CH4的制冷系数是N2制冷系数的2.7倍,而相应卡诺效率是1.6倍。通过Ne、H2、He的理想气体制冷循环计算,结果表明Ne的制冷系数和热力学完善度都最高。从热力学角度而言,可分别采用CH4和Ne作为制冷剂组成制冷循环。Ten billion cubic meters of hydrogen are dissipated to the environment along with the emission of coke - oven gas every year in china. A divisional separation and liquefaction model of hydrogen by means of a novel cryogenic separation method presented in this paper. Performance figures of the ideal vapor refrigeration cycle with the refrigerant of CH4 and N2 are calculated. The results shows that the coefficient of performance of CH4 is 2.7 times than that of N2, and the earnot efficiency of CH4 is 1.6 times than that of N2. Performance figures of the ideal gas refrigeration cycle with the different refrigerant of Ne、H2 and He are calculated, and the results shows that both the coefficient of performance and figure of merit of Ne is the highest. It is thermodynamically possible to arrange the refrigeration cycle with the refrigerant of CH4 and Ne.

关 键 词：焦炉气 氢 低温分离 制冷循环 

分 类 号：TB651[一般工业技术—制冷工程]