Abstract
An experimental system of rotating spray drying for cleaning the waste incineration flue gas has been set up on account of the particular fact, that the flue gas quantity is small and contains relatively little SO2,but relatively much HCl. The influence, of the main parameters which could be control during design and operation, on the efficiency of desulphurization and dechlorination has been tested determined. It was showed that this method resulted in higher dechlorination efficiency and lower desulphurization efficiency. Nevertheless, considering the particularities of the waste incineration flue gas, the discharged flue gas which had been cleaned by this method can meet the restrictive demands of discharging standard of SO2, and at the same time can warrant a higher efficiency of dechlorination. The efficiency of flue gas cleaning can be enhanced by increasing stoichiometric ratio, by injecting more water, by increasing the rotating speed of atomizer and by decreasing flue gas velocity. The efficiency of desulphurization and dechlorination could reach 78% and 90% at stoichiometric ratio 1.8, the amount of injection water 15L/h, rotating speed of atomizer 13500r/min and flue gas velocity 0.7m/s.
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