石油加工业卫生防护距离标准研究

Study on the standard of health protection zone for petroleum processing industry

目的 研制石油加工业的卫生防护距离标准.方法 通过现场调研和监测,采用地面浓度反推法估算特征污染物的无组织排放源强度,再通过大气扩散模型计算卫生防护距离.结果 石油加工行业特征污染物为硫化氢,当地近5年平均风速为＜2、2～4及＞4 m/s时,石油加工规模≤8000 kt/a,卫生防护距离建议值分别为900、800、700 m;石油加工规模＞8000 kt/a,卫生防护距离建议值分别为1200、1000、900 m.结论 通过对1987年标准的修订和完善,推荐的石油加工业卫生防护距离对敏感区居民健康的保护是合理可行的.

Objective To establish health protection zone standards for petroleum processing industry.Methods The intensity of characteristic pollutants from fugitive emission were estimated by the inverse method of ground concentration through field survey and monitoring for representative petroleum processing industry,which was calculated health protection zone by using the model of atmospheric diffusion. Results Characteristic pollutant of fugitive emission source from petroleum processing industry was confirmed as hydrogen sulfide.When local average wind speed in the past five years was less than 2,2～4 m/s and more than 4 m/s respectively and meanwhile the scale of petroleum processing industry was less than 8 million tons,the recommended value of health protection zone were 900,800,700 m respectively.Besides,when the scale of petroleum processing industry was more than 8 million tons and in the same wind speed level,the recommended value of health protection zone were 1200,1000,900 m respectively.Conclusions Recommended value of health protection zone for petroleum processing industry was reasonable and feasible through revising and improving of the version of 1987＇s standard.