燃油加氢深度脱硫过程的生态环境影响分析  

Analysis of Eco-environmental Impacts of Deep Hydrodesulfurization Process for Fuel Production

作　　者：吴乐[1] 朱强[1] 刘永忠[1,2] 

机构地区：[1]西安交通大学化工系,陕西西安710049 [2]西安交通大学热流科学与工程教育部重点实验室,陕西西安710049

出　　处：《石油学报（石油加工）》2016年第2期343-349,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(21376188;21176198);陕西省工业科技攻关项目(2015Gy095)资助

摘　　要：为了评价清洁燃料生产过程对生态环境影响,采用基于全生命周期方法的Eco-indicator 99评价了加氢精制过程中CO_2和SO_2直接排放和间接排放对生态环境的综合影响,分析了清洁燃料品质提升及其生产过程对生态环境的影响。研究表明,对于加工量3Mt/a的柴油加氢装置,当产品柴油中硫质量分数从196μg/g降至38μg/g时,为生产清洁燃料所付出的代价是向生态环境增加CO_2排放量37.69kt/a,清洁燃料生产过程的环境损害从173.1 Mpt/a增大到176.5 Mpt/a,增幅为2.0%;加氢精制过程中,氢气和蒸汽的消耗是CO_2和SO_2排放的主要来源。为了减小燃料生产和消费对生态环境的影响,应从全生命周期角度评价清洁燃料的生产过程和工艺改进对生态环境的影响。In order to evaluate the environmental impacts of production processes for clean fuel,the comprehensive effects of CO2 and SO2emissions in typical hydrotreating processes on the ecological environment were quantitatively analyzed by Eco-indicator 99 based on life cycle assessment method,and the effects of quality improvement for clean fuel and its production process were also involved.The results indicated that for a diesel hydrotreating unit with processing capacity of3 Mt/a,the sulfur mass fraction in the product is reduced from 196μg/g to 38μg/g at the cost of the increase of CO2 emissions to the atmosphere in the amount of 37.69kt/a,and the environmental damages is increased by 2.0%,from 173.1Mpt/a to 176.5Mpt/a.The consumptions of hydrogen and steam in the hydroteating unit are the major sources of CO2 and SO2 emissions.In order to reduce the impacts of fuel production and consumption on the ecological environment,these impacts should be evaluated from the perspective of life cycle analysis.

关 键 词：加氢精制过程 CO2排放 SO2排放 全生命周期分析 

分 类 号：TQ021.8[化学工程]