Mercury Transformation Modelling with Bromine Addition in Coal Derived Flue Gases

摘要

In this work we present a gas-phase mechanism describing the oxidation of mercury by bromine and chlorine for application to coal derived flue gases. Developed sub-models for Hg-Cl and Hg-Br oxidation are combined with NO_x, sulphur, chlorine and bromine chemistry in order to form an overall homogeneous mechanism that is applicable to post-combustion flue gases. The mechanism is compared to experimental data obtained from flow reactor studies and then investigated using rate-of-production and sensitivity analyses in order to identify the most important and influential reaction channels.