摘要
石油化工生产过程具有投入1种原料生产多个产品的特点,碳足迹评价中以产品质量来分配共生过程的碳排放量,其结果不能体现生产过程碳排放的来源。石油化工装置能量利用状况是影响碳排放的重要因素,依据产品在生产过程中的能量变化过程进行碳足迹评价,其结果可以反映产品生产所导致碳排放的根源和本质。对某10 Mt/a常减压装置的换热网络和分馏塔进行能量核算,确定产品的能量变化过程,依据用能系统的碳排放计算碳足迹。结果显示:其减压塔顶油气碳足迹最高,达到43.748 kgCO_(2)/t,常一线碳足迹最低,为11.546 kgCO_(2)/t;由所有产品碳足迹计算的碳排放与装置碳排放吻合。因此基于能量平衡的产品碳足迹评价方法,可以按照产品在生产过程中的能量变化将装置的碳排放分配到所有产品中,产品碳足迹结果与碳排放的来源相一致。
The petrochemical production process is characterized by producing multiple products with one raw material.The carbon emissions from the process of symbiosis are allocated according to the product quality in the carbon footprint evaluation,and the results fail to display the source of carbon emission during production.As the energy utilization of petrochemical units is the improtant factor affecting carbon emissions,if the carbon footprint evaluation is made in light of the energy change of products during production,and then the results can reflect the root and essence of carbon emissions caused in the production process.Energy accounting was performed on the heat exchange network and fractionator of a 10 Mt/a atmospheric and vacuum distillation unit,so as to determine the energy change process of the product and calculate the carbon footprint according to the carbon emissions of the energy consumption system.The results show that the carbon footprint of oil and gas on the top of the vacuum tower is the highest,reaching 43.748 kgCO_(2)/t,and that of the first atmospheric line is the lowest,being 11.546 kgCO_(2)/t.The carbon emissions calculated by the carbon footprint of all products are consistent with those of the unit.Therefore,the product carbon footprint evaluation method based on energy balance can distribute the carbon emissions of the unit to all products according to the energy change of products during production.The product carbon footprint results are consistent with the source of carbon emissions.
作者
田涛
任秀芳
王连超
田增林
王北星
TIAN Tao;REN Xiufang;WANG Lianchao;TIAN Zenglin;WANG Beixing(SINOPEC Engineering(Group)Co.,Ltd.,Beijing 100029,China;Tianjin Petrochemical Company,SINOPEC,Tianjin 300271,China)
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2023年第2期279-288,共10页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
中国石油化工股份有限公司科技开发项目(320054)基金资助。
关键词
常减压装置
产品碳足迹
能量平衡
换热网络
中段循环取热
atmospheric and vacuum distillation unit
product carbon footprint
energy balance
heat exchange network
mid-section cyclic heat extraction
