摘要
氢能大规模发展需要解决“以何种方式制取氢气”的问题,在实现“双碳”目标的背景下,需要全面考察氢能产业链的碳排放情况。在相同的研究尺度下,建立统一的核算边界,采用统一的参数数据,定量测算典型制氢工艺的生命周期碳排放情况。结果显示,全生命周期视角下的CO_(2)排放量从大到小依次为甲醇制氢(煤炭为原料)、以火电为主的电解水制氢、煤制氢、甲醇制氢(天然气为原料)、天然气制氢、光伏发电电解水制氢、风电电解水制氢。煤制氢、天然气制氢的碳排放主要在氢气生产过程,甲醇制氢的碳排放主要在甲醇生产过程,电解水制氢过程虽清洁,但电力隐含的碳排放不容忽视。
The large-scale development of hydrogen energy needs to solve the problem of"how to produce hydrogen".In the context of carbon peaking and carbon neutrality goals,it is necessary to investigate the carbon emissions of hydrogen energy industry chain.In this paper,under the same research scale,a unified accounting boundary was established,and unified parameter data were used to quantitatively measure the life-cycle carbon emissions of four typical hydrogen production processes.The results show that the life-cycle CO_(2)emissions from high to low in order are hydrogen production from methanol(coal as raw material),by water electrolysis(mainly using thermal power),from coal,from methanol(natural gas as raw material),from natural gas,by water electrolysis(using photovoltaic power),and by water electrolysis(using wind power).The CO_(2)emissions of hydrogen production from coal and natural gas are mainly in the hydrogen production process,and the CO_(2)emissions of hydrogen production from methanol are mainly in the coal-to-methanol or natural gas-to-methanol process.Although the process of hydrogen production by water electrolysis is clean,the CO_(2)emissions embodied by electricity cannot be ignored.
作者
陈馨
Chen Xin(SINOPEC Economics&Development Research Institute Company Limited,Beijing,100029,China)
出处
《当代石油石化》
CAS
2023年第1期19-25,共7页
Petroleum & Petrochemical Today
关键词
CO_(2)排放
生命周期
煤制氢
天然气制氢
甲醇制氢
电解水制氢
CO_(2)emissions
life cycle
hydrogen production from coal
hydrogen production from natural gas
hydrogen production from methanol
hydrogen production by water electrolysis
作者简介
陈馨,硕士,主要从事供应链优化、“双碳”目标下炼化企业转型的技术路径研究等。
