a compartment accessible from an exterior wall of said housing through a closeable access opening and communicating with said sealable chamber, said compartment configured to receive a reducing agent, at least a portion of said compartment being disposed below said plate, and said plate and said floor cooperating to prevent solid particulate from entering said {HEAD ~ chamber} from {TAIL ~ said compartment} 
from
a compartment accessible from an exterior wall of said housing through a closeable access opening and communicating with said sealable chamber , said compartment configured to receive a reducing agent , at least a portion of said compartment being disposed below said plate , and said plate and said floor cooperating to prevent solid particulate from entering said { HEAD ~ chamber } from { TAIL ~ said compartment }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL