| 石化中间储罐挥发性有机物排放特征与反应活性 |
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| 引用本文： | 曹冬冬,李兴春,薛明. 石化中间储罐挥发性有机物排放特征与反应活性[J]. 化工进展, 2022, 41(7): 3974-3982. DOI: 10.16085/j.issn.1000-6613.2021-1842 |
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| 作者姓名： | 曹冬冬 李兴春 薛明 |
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| 作者单位： | 1.石油石化污染物控制与处理国家重点实验室，中国石油集团安全环保技术研究院，北京 102206;2.中国科学院过程工程研究所，北京 100190 |
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| 基金项目： | 国家科技重大专项(2016ZX05040-004);中国石油集团重大科技专项(2016E-1208);中国石油科技专项(2021DJ6603) |
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| 摘 要： | 中间储罐是石化企业的主要挥发性有机物(VOCs)排放源，对大气环境产生重要影响。本文对我国某石化企业炼化中间产物、污油、石化中间产物等中间储罐大呼吸过程进行了采样监测，分析了VOCs排放特征并建立了有机污染物图谱。基于OH自由基损失速率和最大增量反应活性法，分别量化了大呼吸过程大气反应活性和臭氧生成潜势(OFP)。结果表明，中间储罐大呼吸过程VOCs浓度高达数万毫克每立方米，单位体积物料周转量VOCs排放强度达到0.55～71.3g/m3。不同储罐排放特征差异大，炼化中间产物及污油储罐VOCs组成以烷烃为主，石化中间产物储罐VOCs以烯烃和芳香烃为主；C3～C7烷烃、C3～C4烯烃、苯、甲苯和丙酮等是首要污染物。中间储罐大呼吸损耗气具有较高大气光化学反应活性和臭氧生成潜势(OFP),OH自由基损失速率常数接近1.43×104～2.37×106s-1,OFP达到2.84×105～7.53×10...
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| 关 键 词： | 中间储罐 石化企业 挥发性有机物 排放源 臭氧生成潜势 |
| 收稿时间： | 2021-08-27 |
Emission characteristics and photochemical reactivity of volatile organic compounds from petrochemical intermediate storage tanks |
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| CAO Dongdong,LI Xingchun,XUE Ming. Emission characteristics and photochemical reactivity of volatile organic compounds from petrochemical intermediate storage tanks[J]. Chemical Industry and Engineering Progress, 2022, 41(7): 3974-3982. DOI: 10.16085/j.issn.1000-6613.2021-1842 |
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| Authors: | CAO Dongdong LI Xingchun XUE Ming |
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| Affiliation: | 1.State Key Laboratory of Petroleum Pollution Control, CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, China
2.Institute of Processing and Engineering CAS, Beijing 100190, China |
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| Abstract: | Petrochemical intermediate storage tanks are key volatile organic compounds (VOCs) emission sources which play vital roles in regional air pollution and abatement. During the working loss process, the intermediate product tank vents of refining and petrochemical processes and waste oil tanks in a petrochemical facility were sampled and measured in this study. The emission characteristics of VOCs were analyzed and speciated source profiles for specific sources were developed. The ambient photochemical reactivity were developed based on the value of OH loss rate. By virtue of the maximum increment reactivity method, ozone formation potential of sources were determined. The results suggested that level of VOCs from working loss process reaches tens of thousands mg/m3, and the corresponding emission strength ranged from 0.55g/m3 to 71.3g/m3 per material turnover. The VOCs emission characteristics differed among specific tanks, with refining process related tank and waste oil tank dominant in alkane and petrochemical tank prevailing in alkene and aromatics. The C3—C7 alkane, C3—C4 alkene, benzene, toluene and acetone were ranked as primary pollutants with highest weight percentage. The intermediate storage tank vented VOCs features in relative high photochemical reactivity (1.43×104—2.37×106s-1) and OFP (2.84×105—7.53×107mg/m3), with waste oil tank of delayed coking process having the lowest value and heavy oil product of ethylene cracking process the highest value. The alkane and alkene were found to contribute mostly to VOCs related photochemical reactivity and OFP during the working loss process. The C6—C7 alkane such as methylpentane, hexane and methylcyclohexane, C3—C5 alkene, and xylene were recommended to give preferred control priority. |
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| Keywords: | intermediate storage tank petrochemical facility volatile organic compounds emission source ozone formation potential |
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