Study of the Removal Efficiency of Acid Gases (HC1) by Addition of Bicarbonate

摘要

This study has been carried out to investigate the removal efficiencies of HCl in incineration system. The bicarbonate was used as a solid sorbant in Pilot plant. It is known that bicarbonate can be evaluated as an adsorbant to remove the HCl efficiently and properly. The model takes into account the effects of operating parameters such as residence time, stoichiometric ratio, operating temperature and operating pressure. The particle diameter of the bicarbonate was 35 micro meter and the retention time between he injection point was 1.5 second. In this experiment, the residence time was 1.5 sec, stoichiometric ratio was 1SR, 1.25SR, respectively, the perating temperature was 160 ℃, 180 ℃and 200 ℃, the operating pressure was 210mmAq, 230mmAq and 250mmAq respectively. It was found that the stoichiometric ratio and the operating pressure for the highest removal of HCl was 1SR and 230mmAq respectively however the removal efficiency do not depends on operating temperature. It was also found that the optimal removal efficiency of HCL was obtained when the operation temperature was 180 ℃. It was also found that the optimal removal efficiency was 99.50% when the stoichiometric ratio was 1SR, the operating pressure was 230mmAq and the operating temperature was 180 ℃.