The Study of Denitration and Mercury Removal from Flue Gas by Biomass Semi-Coke Absorbents

The biomass of rice straw was chosen to prepare the biomass semi-cokes which are characterized by nitrogen adsorption/desorption and Fourier transformation infrared spectroscopy (FT-IR). The influence of biomass semi-cokes activity on pore structure and surface properties of the semi-cokes was investigated. Denitration and mercury removal experiments were carried out in a fixed-bed reactor. The results show that the active biomass semi-cokes have more specific surface area and micro-pore volume than the biomass semi-cokes. It has direct relationship between the NO and mercury adsorption capacity. It is supposed that oxygen-containing functional and basic groups may have dominant effect on the mercury removal from the glue gas.