两种技术路线的煤制氢产业链生命周期成本分析

氢能被誉为21世纪的"终极能源",是一种清洁的二次能源。2019年氢能首次写入两会政府工作报告,凸显了发展氢能产业的重要性。中国"富煤、贫油、少气"的能源结构决定了在一定时期内以煤炭作为主要的氢能原料的地位不会改变。采用生命周期成本分析方法,研究以上游产业链的煤气化制氢、煤热解制氢为起点,结合中游产业链的气氢和液氢运输等不同储运方式,到下游产业链的加氢站,得到煤制氢产业链生命周期成本,通过比较可知,以煤为原料制氢具有明显的经济性优势,但生命周期环境影响所带来的外部成本也不容忽视,为综合评价以煤制氢技术发展氢能产业链的可持续性提供理论依据。

Study on Transition Metal Catalysts for Hydrogen Production from Coal Pyrolysis

In this paper,13 kinds of transition metals are studied as catalysts for the hydrogen production from coal pyrolysis, and relationships between the catalytic activity of a transition metal and its outer electron configuration,d% of transition metals and geometric configuration are summarized.Experimental results show that the same group of transition metals show good similarity for hydrogen production from coal pyrolysis;the d%of transition metals which have activity for hydrogen production from coal pyrolysis is between 40%-50%;all transition metals which have catalytic activity possess either a face-centered cubic or a hexagonal crystal structure.Therefore,it is important to choose a transition metal with an appropriate d%and crystal structure as the catalyst for hydrogen production from coal pyrolysis.