New Calculational Method for Deducing the Complex Chemistry of Coal Ash Deposits

摘要

In this paper, the authors use a new calculational method, based on geometric programming, for computing the large number of condensed and gaseous products of coal combustion. A silica saturated liquid silicate-sulfate solution is formed from Illinois No. 6 coal under oxidizing conditions and, under some nonequilibrium conditions, is table to temperatures lower than at equilibrium. The liquid phase is an important factor in ash agglomeration, and the nonequilibrium aspects of its formation will require careful examination in coupled experimental-calculational studies in order to fully define the chemistry, the tendency to agglomerate, and the corrosivity of combustion products. (ERA citation 13:042602)