Abstract
PCDD/F concentration in clean gas ranged from 1.88 to 7.76 ng l-TEQ/Nm 3 and varied for a factor of 4.1 during routine operation. During performance with Mg(OH) 2 addition, clean gas concentrations ranged from 5.06 to 8.19 ng I-TEQ/Nm 3 and varied for a factor of 1.6. Mg(OH) 2 addition seemed to increase emissions concentrations of PCDD/F (I-TEQ), PCB and chlorobenzenes, but not chlorophenols, while inorganic acid parameters (HCl, HF, SO 2) are reduced, as expected. In addition, conclusions concerning the reliability of single emission measurements are drawn.
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