主办单位：中国气象局沈阳大气环境研究所
国际刊号：ISSN 1673-503X
国内刊号：CN 21-1531/P
气象与环境学报

气象与环境学报

• 快报 • 上一篇    

开滦苯加氢精制工程环境风险评价

王绪鑫1,2;徐新阳1;张宇晨3   

  1. 1.东北大学资源与土木工程学院 辽宁沈阳110004;3.中冶焦耐工程技术有限公司 辽宁鞍山114000;2.鞍山市气象局 辽宁鞍山114004
  • 收稿日期:2007-11-21 修回日期:2008-01-02 出版日期:2008-02-01 发布日期:2008-02-01

Environmental risk assessment on benzene hydrofining engineering in Kailuan


WANG Xu-xin1;2 XU Xin-yang1 ZHANG Yu-chen3   

  1. 1.College of Resources and Civil Engineering;Northeastern University;Shenyang 110004;China;2.Anshan Meteorological Bureau;Anshan 114004;China;3.ACRE Coking &Refractory Engineering Consulting Corporation;MCC;Anshan 114000;China
  • Received:2007-11-21 Revised:2008-01-02 Online:2008-02-01 Published:2008-02-01

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摘要： 以某苯加氢精制工程为例,探讨了焦化行业环境风险评价方法;利用该项目所在地近3 a地面常规气象观测资料,分析了当地的污染气象特征;采用风险识别、源项分析、后果计算、风险评价等环境风险评价技术方法,筛选出主要风险因子并进行风险预测,采用多烟团模式并考虑气象因素进行风险计算。结果表明:污染事故发生后,苯类物质的地面浓度最大值为3 214 mg/m3,位于距离事故发生源WNW方向约50 m处超标1 339倍,由此可知近距离污染严重;高浓度污染物主要集中在污染源附近,随着距离的延长,污染物浓度不断向下风向扩散,超标范围在6 km内。利用简化分析法,定量给出此项工程的最大可信事故风险值为7.6×10-6/a,小于化工行业风险值8.33×10-5/a,此工程风险值水平与同行业比较在可接受的范围内。

关键词: 环境风险评价, 污染气象, 源项分析, 后果计算, 最大可信事故

Abstract: The environmental risk assessment methods of coking industry were discussed by a case study-a benzene hydrofining engineering.According to conventional meteorological data in the study area during the recent three years,the local pollution meteorological characteristics were analyzed.The main risk factors were selected by environmental risk assessment techniques and the methods including risk identification,source term analysis,consequence calculation and risk assessment.At the same time,the risk was evaluated.Considering the meteorological factors,the risk values were calculated by multiple puff models.The results show that the largest ground concentration of benzene homolog is 3214 mg/m3 after pollution accident happened.The ground concentration to 50 m away the accident source exceeds 1339 times than that of the standard value.Thus,it is considered that the serious pollution appears near the accident source,and the higher concentration pollutants distribute near the pollution sources.The pollutants are continually diffused downwind.The concentrations within 6 km of the accident source all exceed the standard value.Based on simplified method,the maximum credible accident risk value is 7.6×10-6/a,which is less than chemical industry risk value(8.33×10-5/a).Compared with the values in the same industries,the engineering risk value could be accepted.