PRODUCTION OF POROUS SODIUM CARBONATE USING VACUUM THERMAL TREATMENT OF SODIUM BICARBONATE FOR TREATMENT OF MUNICIPAL SOLID WASTE INCINERATION FLUE GAS

Abstract

 In this study, it was investigated that a method for producing porous sodium carbonate from coarse sodium bicarbonate by using vacuum thermal treatment instead of pulverization for the high efficiency of dry-scrubbing of solid waste incineration flue gas. The porous sodium carbonate was obtained by vacuum thermal treatment of coarse sodium bicarbonate which having a higher specific surface area than that was produced by heating the pulverized sodium bicarbonate under normal pressure at 180℃. From the results of SEM analysis and pore distribution analysis, it was found that the lower the pressure, the larger the mesopore and the specific surface area. The acid gas removal performance of the produced porous sodium carbonate increased as the specific surface area increased. In addition, the moisture in the gas leads to an increase in acid gas removal efficiency of porous sodium carbonate.