APPARATUS FOR CONTROLLING DROPLET DIAMETER OF EJECTED BLACK LIQUOR IN MIXED-COMBUSTION RECOVERY BOILER

摘要

PURPOSE:To prevent control error of an apparatus caused by the increase of SO2 in fuel in mixed combustion and to get the optimum particle size of ejected black liquor by providing a means for operating a preset temperature of black liquor, a means for operating a compensation value of SO2 and a means for calculating the correction of the compensation value of SO2. CONSTITUTION:The degree of mixed combustion is determined from the amount of fuel charged into a furnace in mixed combustion and a value for correcting the compensation value of SO2 is calculated from the obtained mixed combustion degree and the amount of generated SO2 before and after the mixed combustion. The compensation value of SO2 measured by a means 3 for operating compensation value of SO2 is corrected by the correction value to adjust the preset temperature level of black liquor determined by a means 2 for operating preset temperature level of black liquor.