Trace element distributions in several coal conversion processes: an exchange program between the Los Alamos Scientific Laboratory and the National Coal Board of England

Abstract

This manuscript summarizes element data obtained by neutron activation analysis of samples from three National Coal Board (England) processes. These processes include fluidized bed combustion, pressurized fluidized bed combustion, and solvent extraction. A hypothesis to explain the behavior of the elements is also given. In summary, the escape tendency of elements through a conversion system can be predicted from the behavior of the mineral in which they occur. The behavior of a mineral can be predicted from four parameters. The most important ones are volatility, particle size, particle cohesive strength, and oxygen reactivity. Proper consideration of these variables can lead to reasonable predictions of trace-element behavior.