Comparative lifecycle greenhouse gas emissions and their reduction potential for typical petrochemical enterprises in China  

作　　者：Shujie Zhao Dongfeng Zhao Qingbin Song 

机构地区：[1]College of Chemical Engineering,China University of Petroleum(East China),Qingdao 266580,China [2]Macao Environmental Research Institute,Macao University of Science and Technology,Macao 999078,China

出　　处：《Journal of Environmental Sciences》2022年第6期125-138,共14页环境科学学报（英文版）

基　　金：supported by the Ministry of Ecology and Environment of the People’s Republic of China(No.2110105);Guangdong Basic and Applied Basic Research Foundation(No.2019A1515011757);the Graduate Innovation Project of China University of Petroleum(East China)(No.YCX2021055)。

摘　　要：Petrochemical enterprises have become a major source of global greenhouse gas(GHG)emissions.Yet,due to the unavailability of basic data,there is still a lack of case studies to quantify GHG emissions and provide petrochemical enterprises with guidelines for implementing energy conservation and emission reduction strategies.Therefore,this study conducted a life cycle assessment(LCA)analysis to estimate the GHG emissions of four typical petrochemical enterprises in China,using first-hand data,to determine possible emission reduction measures.The analytical data revealed that Dushanzi Petrochemical(DSP)has the highest GHG emission intensity(1.17 tons CO_(2)e/ton),followed by Urumqi Petrochemical(UP)(1.08 tons CO_(2)e/ton),Dalian Petrochemical(DLP)(average 0.58 tons CO_(2)e/ton)and Karamay Petrochemical(KP)(average 0.50 tons CO_(2)e/ton)over the whole life cycle.At the same time,GHG emissions during fossil fuel combustion were the largest contributor to the whole life cycle,accounting for about 77.31%–94.27% of the total emissions.In the fossil-fuel combustion phase,DSP had the highest unit GHG emissions(1.20 tons CO_(2)e),followed by UP(0.89 tons CO_(2)e).In the industrial production phase,DLP had the highest unit GHG emissions(average 0.13 tons CO_(2)e/ton),followed by UP(0.10 tons CO_(2)e/ton).During the torch burning phase,torch burning under accident conditions was the main source of GHG emissions.It is worth noting that the CO_(2) recovery stage has"negative value,"indicating that it will bring some environmental benefits.Further scenario analysis shows that effective policies and advanced technologies can further reduce GHG emissions.

关 键 词：Greenhouse gas(GHG)emissions Petrochemical enterprises Life cycle assessment Scenario analysis Reduction opportunities 

分 类 号：X74[环境科学与工程—环境工程]