摘要
中国液体燃料的生产严重依赖石油,为了缓解石油高度对外依存带来的风险,中国正在积极探索石油的替代路线。在中国“富煤贫油”的情况下,煤制油有望成为缓解石油供应安全风险的重要替代途径。利用生命周期评价的方法(from cradle to gate)从能耗、碳排放和经济性三个角度对煤直接液化(direct coal liquefaction,DCL)和煤间接液化(indirect coal liquefaction,ICL)进行分析,并与传统炼油(oil refining,OR)路线进行对比。结果表明:DCL和ICL路线的生命周期能耗分别是OR路线生命周期能耗的2.4倍和2.8倍,碳排放分别是OR路线碳排放的8倍和10倍。当油价低于45美元/桶时,无论是DCL还是ICL均难以与OR路线竞争;当油价在35美元/桶~65美元/桶,煤价在低于400元/t时,ICL有较好的竞争力;而当油价高于75美元/桶时,即使煤价高达700元/t,DCL仍具较好的竞争力。
The production of the liquid fuels in China is heavily dependent on oil. In order to alleviate the risks caused by the high external oil dependence, China is actively exploring alternative routes to oil. Recognizing the “rich coal and poor oil” conditions in China, the coal-to-liquids conversion is expected to become an important alternative to enhance the security of the oil supply. This work uses life cycle assessment(from cradle to gate) method to analyze two coal-to-liquid routes, which are termed as direct coal liquefaction(DCL) route and indirect coal liquefaction(ICL) route, respectively, in terms of the energy consumption, carbon emissions and economic costs, and compare them with the traditional oil refining(OR) route. The results show that the life cycle energy consumption of the DCL and ICL routes are 2.4 times and 2.8 times greater than that of the OR route, and the carbon emissions are 8 times and 10 times greater than that of the OR route, respectively. In case that the oil price is lower than 45 $/bbl, neither the DCL route nor the ICL route can compete with the OR route. In case that the oil price is between 35 $/bbl-65 $/bbl and the coal price is lower than 400 yuan/t, the ICL route will have better economic competitiveness;in case that the oil price is higher than 75 $/bbl and the coal price is as high as 700 yuan/t, the DCL route still has a good economic competitiveness.
作者
杨潇潇
张媛媛
李俊杰
卜庆佳
田亚峻
许德平
YANG Xiaoxiao;ZHANG Yuanyuan;LI Junjie;BU Qingjia;TIAN Yajun;XU Deping(School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing),100083 Beijing,China;Extended Energy Big Data and Strategy Research Center,Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,266101 Qingdao,China;Shandong Energy Institute,266101 Qingdao,China;National Institute of Clean-and-low-carbon Energy,102211 Beijing,China)
出处
《煤炭转化》
CAS
CSCD
北大核心
2022年第1期1-10,共10页
Coal Conversion
基金
中国工程院能源专业知识服务系统项目(CKCEST-2021-1-15)
中国工程院促进宁东地区能源资源、生态环境、社会经济高质量协同发展战略研究项目(2020NXZD3).
关键词
煤制油
生命周期评价
能耗
碳排放
经济
coal-to-liquids
life cycle assessment
energy consumption
carbon emissions
cost
作者简介
第一作者:杨潇潇,硕士生,E-mail:yxx102@outlook.com;通信作者:田亚峻,教授级高级工程师,E-mail:tianyajun@qibebt.ac.cn;通信作者:许德平,博士、教授,E-mail:xdp1073@163.com。
