山西省燃煤发电厂煤炭利用过程中放射性水平监测及迁移分析研究

Research on Radioactive Level Monitoring and Migration Analysis in Coal Utilization Process of Coal fired Power Plants in Shanxi Province

鉴于山西省燃煤电厂较多,将山西省分为晋北、晋东南、晋西三个区域,筛选出利用本地煤的三家燃煤电厂。结合放射性核素的特性,对不同区域内燃煤电厂的原煤、煤灰进行放射性水平监测,即总α、总β和γ核素。一方面可以掌握原煤、煤灰放射性水平,另一方面可以明确原煤燃烧后放射性核素迁移方向。结果表明:山西省原煤、煤灰放射性水平较低,原煤在燃烧过程中发射α、β、γ射线的放射性核素发生了迁移,且大量核素沉积在了煤灰中。

Given the large number of coal-fired power plants in Shanxi Province,the province is divided into three regions:northern Shanxi,southeastern Shanxi,and western Shanxi.Three coal-fired power plants that utilize local coal have been selected.Based on the characteristics of radioactive nuclides,the radioactive levels of raw coal and ash from internal combustion coal-fired power plants in different regions are monitored,including total alpha,total beta,and gamma nuclides.On the one hand,it can grasp the radioactive levels of raw coal and coal ash,and on the other hand,it can clarify the migration direction of radioactive nuclides after the combustion of raw coal.The results indicate that the radioactive levels of raw coal and coal ash in Shanxi Province are relatively low.During the combustion process of raw coal,radioactive nuclides emitting alpha,beta,and gamma rays migrate,and a large amount of nuclides deposit in the coal ash.