石化企业酸性水汽提装置防护距离确定的方法的比较  

Comparative Study of Different Methods in the Determination of the Protection Distance of Acidic Water Stripping Unit in Petrochemical Enterprises

作　　者：付金杯[1,2] 李冰晶[1,2] 马卫东[1,2] 

机构地区：[1]兰州大学环境质量评价研究中心,兰州730000 [2]兰州大学大气科学学院,兰州730000

出　　处：《安全与环境工程》2013年第1期89-93,共5页Safety and Environmental Engineering

基　　金：中国石油兰州石化分公司项目

摘　　要：防护距离的设置是大气环境影响评价中一项重要的工作内容,它可为评价项目的选址、总图布置的合理性与可行性提供科学决策依据。本文以某石化企业酸性水汽提装置为例,选择H2S、NH3作为特征污染物,分别采用公式法、行业标准法、大气环境防护距离模式法、AERMOD模式法对酸性水汽提装置的防护距离进行了计算和对比分析。结果表明:公式法和行业标准法确定的卫生防护距离分别为1 073m、1 200m,大气环境防护距离模式法确定的防护距离为950m,AERMOD模式法确定的以面源中心为起点的控制距离为800m;不同方法确定的防护距离差别明显,各有其优缺点,但AERMOD模式法确定的防护距离,既充分考虑了不同气象条件和地形条件的影响,也考虑了不同污染物排放源强的影响,克服了其他方法的一些缺陷和不足,为合理制定石化企业卫生防护距离提供了一个较好的途径。Determining the protection distance is one of the most important parts in the environmental impact as- sessment, for it provides scientific basis to evaluate the rationality and feasibility of project location and layout. This paper takes an acidic water stripping unit of a petrochemical enterprise as an example, chooses H2 S and NH3 as the characteristic pollutants and respectively uses formula method, the standard of the industry, atmospheric environ- mental protection distance model and AERMOD to calculate the protection distance of acidic water stripping unit. The results show that the formula method and the standard of the industry ascertain the health protection distance is 1 073 m and 1 200 m respectively,atmospheric environmental protection distance model ascertains the distance is 950 m, and AERMOD ascertains the distance from the centre of the area is 800 m. According to the shortcomings of some current methods, the paper also puts forward some relevant suggestions in order to provide the references for setting the protection distance in petrochemical enterprises.

关 键 词：酸性水汽提装置 大气环境防护距离 卫生防护距离 AERMOD模式法 

分 类 号：X822.9[环境科学与工程—环境工程]