The Study Of The Migratory Characteristics Of Sulfur,Fluorine,Chlorine,Mercury,Arsenic In Barometric Pyrolysis Of Coals

Releasing harmful elements by the utilizing process of coals leads to environment pollution and people' s increasing attention.The barometric pyrolysis is a bacis way of the utilizing processes of coals.People had analysed the influence of volatile on removal of harmful elements in the study of removal characteristics of harmful elements in barometric pyrolysis of coals and the conclusions are experiential mostly.The thesis discuss migratory mechanism of harmful elements from the viewpoint that volatile components play an important role on removal of harmful elements in coals' s barometric pyrolysis. Based on the thermodynamic data, the reactive temperatures of volatile components and the principal substance that contain sulfur, fluorine, chlorine, mercury, arsenic are calculated for the frist time in the thesis. The change characteristics of volatile components are researched in barometric pyrolysis.The migratory characteristics of sulfur, fluorine, chlorine, mercury, arsenic in four different degrees of metamorphism coals is analysed detailedly and some clear conclusions are obtained.