大气扩散浓度估算在锅炉房烟囱高度计算中的应用

锅炉房的烟囱已从单纯的排气装置发展成为控制污染、保护环境的设备。因此烟囱高度的正确估算对于环境影响评价工作、建设单位都至关重要。结合唐山某城区集中供热锅炉房环境影响评价案例,利用大气扩散浓度公式估算锅炉房烟囱高度。在计算过程中,考虑了烟气流速及当地常年风向、风速、稳定度等污染气象特征,由正态分布模式导出的简化公式导出最大着地浓度与烟囱有效高度的平方成反比,从而计算出烟囱高度。另外还总结烟囱设计中应注意的一些问题,为建有锅炉房的建设项目环境影响评价工作提供参考。

The Calculation of Chimney Height of Boiler Room by the Concentration Estimating of Air Diffusion

The chimney of boiler room has been a kind of facilities that can control pollution and protect environment.So the calculation of the chimney of boiler room is very important for EIA and the construction department.The chimney height of boiler room is calculated by the concentration estimating of air diffusion in this paper.The local polluted atmosphere characteristic such as air course,wind speed,degree of stability and the velocity of flow of fume are considered,and simplify formula derived The Gaussian distribution showed that the maximum touchdown concentration is inverse proportion with the effect height of chimney.In addtion,some problems about chimney design are summerized in the chapter.This calculating method may be used as reference in EIA of the project built boiler room.