研究报告
曹冬冬,李兴春,范俊欣,崔翔宇.典型炼化企业温室气体甲烷排放特征[J].环境科学学报,2020,40(12):4492-4498
典型炼化企业温室气体甲烷排放特征
- Emission characteristics of greenhouse gas methane from typical petrochemical facility
- 基金项目：国家科技重大专项（No.2016ZX05040-004）；中国石油集团重大科技专项（No.2016E-1208）
- 作者
- 单位
- 曹冬冬
- 1. 中国石油集团安全环保技术研究院, 北京 102206;2. 石油石化污染物控制与处理国家重点实验室, 北京 102206;3. 中国科学院过程工程研究所, 北京 100190
- 李兴春
- 1. 中国石油集团安全环保技术研究院, 北京 102206;2. 石油石化污染物控制与处理国家重点实验室, 北京 102206
- 范俊欣
- 1. 中国石油集团安全环保技术研究院, 北京 102206;2. 石油石化污染物控制与处理国家重点实验室, 北京 102206
- 崔翔宇
- 1. 中国石油集团安全环保技术研究院, 北京 102206;2. 石油石化污染物控制与处理国家重点实验室, 北京 102206
- 摘要：温室气体排放是造成全球变暖和气候恶化的重要根源.甲烷是仅次于二氧化碳的温室气体组分.石油加工过程是潜在的甲烷排放源.本文以我国广西某炼化企业为样本，通过现场采样和离线分析的方法，识别出炼化企业潜在的甲烷排放源，核算了不同排放源的甲烷排放量，分析了炼化企业的甲烷排放特征.研究表明，甲烷是炼化企业排放废气中的重要成分；烟气、污水收集和处理系统、储罐和油品装卸过程等均是重要的甲烷排放源项，其中烟气和储罐对甲烷排放总量贡献占比超过70%；不同源项甲烷排放特征各异，油品装载过程产生废气甲烷浓度最高；污水处理过程废气的甲烷浓度主要受常减压装置污水影响；该炼化企业每万吨原油对应的甲烷排放速率估算值为72.6 kg.
- Abstract：Greenhouse gas emission has been identified as the primary causes of global warming and climate change. Methane was ranked as the most important greenhouse gas second to carbon dioxide. Petroleum processing was a potential methane emission source. This work takes a typical petrochemical facility in Guangxi, China as a sample. A filed measurement campaign was performed and the potential methane emission sources of the petrochemical company were identified through on-site sampling and offline analysis. It calculates the methane emissions from different sources and analyzes the methane emission characteristics from the whole petrochemical facility. The results suggested that methane was an important constituent in effluent gas from petrochemical facility. Flue gas, waste-water collection and treatment system, storage tank and liquid fuel loading process were the main methane emission sources, with flue gas and storage tank contributing to more than 70% of total emission. Different sources have different emission characteristics and the highest methane concentration was found in samples collected from liquid fuel loading process. The methane level in waste-water collection and treatment system was mainly controlled by atmospheric and vacuum distillation units. The methane emission rate of this typical petrochemical facility was estimated to be 72.6 kg per ten thousand tons of crude oil.
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