Dryers Cont

The most popular dry scrubbing systems for incinerators have involved the spray drying of lime slurries, followed by dry collection in electrostatic precipitators or fabric filters. Moller and Christiansen [Air Poll. Cont. Assoc. 84-9.5 (1984)] published data on early European technology. Moller et al. [U.S. Patent no. 4,889,698 (1989)] describe the newer extension of that technology to include both spray-dryer absorption and dry scrubbing with powdered, activated carbon injection. They claim greatly improved removal of mercury, dioxins, and NO,. 

Air cont ng 0.005 kg of w er v ur per kg of dry air is heated to 325 K in a dryer and passed to the lower shelves. It leaves these shelves at 60% humidity, reheated to 325 K and passed over another set of shelves, agam leaving at 60% humidity. This is agdn reheated for the third and fourth sets of shelve, er which the air leaves the dryer. On the assumption that the matmal in each shelf has reached the wet bulb temperature and that heat losses from the dryer may be neglected, determine ... 

Slot type at each end, cont. dryer Enclosed booth, open front Canopy hood Canopy hood... 

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