原油储罐温室气体平均排放因子研究

摘要

原油储罐是油气上游生产环节中不可忽略的温室气体逸散排放源。为探究原油储罐温室气体排放情况，根据胜利油田86座储罐排出气体成分和流量的实地监测结果，利用统计学方法对监测数据进行处理，获得储罐温室气体平均排放因子。其中，一次沉降罐的平均排放因子为0.1215 kg/t，95%的置信区间为0~0.3846 kg/t；二、三次沉降罐的平均排放因子为0.0274 kg/t，95%的置信区间为0~0.0972 kg/t；净化罐的平均排放因子为0.0164 kg/t，95%的置信区间为0~0.0730 kg/t。一次沉降罐温室气体排放量远大于二、三次沉降罐和净化罐的排放量，是储罐温室气体排放的主要来源。%Crude oil storage tank is an important greenhouse gas (GHG) fugitive emission source in the upstream oil and gas production process.In order to understand the GHG emis-sion of crude oil tanks, the chemical composition and flow rate of gas that emitted from 86 tanks were monitored. The average GHG emission factors for primary condensate tanks, second condensate tanks and oil tanks were 0.121 5 kg/t,0.027 4 kg/t and 0.016 4 kg/t,re-spectively. Where the 95% confidence intervals of the means were 0~0.384 6 kg/t, 0~0.097 2 kg/t and 0~0.073 0 kg/t, respectively. Primary condensate tanks are the biggest GHG source in the all types of tank.