基于AP-42模型的原油储罐VOCs排放定量核算及减排措施OA
Quantitative Calculation and Emission Reduction Measures of VOCs Emissions from Crude Oil Storage Tank Based on AP-42 Model
挥发性有机物(VOCs)普遍存在于原油储存和调和过程中,为实现原油储罐VOCs排放的高效管控,以AP-42模型为基础,通过情景分析法和控制变量法考察不同因素对VOCs排放量的影响程度,并提出针对性的减排建议.结果表明,固定顶罐的VOCs排放量最大,内浮顶罐的VOCs排放量最小;油品摩尔分子量和饱和蒸气压分别与VOCs排放量呈线性相关、指数相关;不同密封方式对VOCs排放量的影响较大,一次密封中液体镶嵌的效果最好,二次密封中边缘刮板的效果略优;液体镶嵌+边缘刮板密封方式下的VOCs排放量最小,内浮顶罐和外浮顶罐的VOCs排放量可分别降低 95.60%,94.96%;风速对固定顶罐和内浮顶罐的VOCs排放量不造成影响;当年周转次数超过20次时,因装卸油频繁导致其工作损失或挂壁损失的增速减缓,建议在优选储罐类型、控制油品质量、优化密封方式等方面实现VOCs的减排防控.
Volatile Organic Compounds(VOCs)are ubiquitous in the storage and blending processes of crude oil.To achieve effective control of VOCs emissions from crude oil storage tanks,this study uses the AP-42 model as a foundation and employs scenario analysis and the method of controlling variables to examine the extent to which different factors affect VOCs emissions.Targeted emission reduction suggestions are also proposed.The results indicated that the VOCs emission of the fixed roof tank was the largest,and the VOCs emission of the internal floating roof tank was the smallest.The molar molecular weight and saturated vapor pressure of oil were linearly and exponentially correlated with VOCs emission,respectively.Different sealing methods have great influence on VOCs emission,the liquid inlay in the primary seal is the best,and the edge scraper in the secondary seal is slightly better.The liquid Mosaic and edge scraper seal mode had the smallest VOCs emissions,and the VOCs emissions of the inner and outer floating roof tanks could be reduced by 95.60%and 94.96%,respectively.Wind speed has no effect on VOCs emission in fixed tank and floating roof tank.When the number of turnover exceeded 20 times in the year,the growth rate of work loss or wall loss slowed down due to frequent loading and unloading of oil.It is suggested that the emission reduction prevention and control of VOCs should be realized in optimizing the type of storage tank,controlling the quality of oil and optimizing the sealing method.
闫洋;崔青龙;刘铭;孔令超;谈坤
中国石油天然气股份有限公司华北油田分公司中国石油天然气股份有限公司华北油田分公司中国石油天然气股份有限公司华北油田分公司中国石油天然气股份有限公司华北油田分公司中国石油天然气股份有限公司华北油田分公司
环境科学
AP-42模型原油储罐VOCs工作损失挂壁损失
AP-42 modelcrude oil storage tankVOCswork losswall loss
《油气田环境保护》 2024 (6)
19-24,6
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