recovering heat from at least one of the fuel, steam, hot gasses, and {TAIL ~ hot fluid} exiting {HEAD ~ the energy conversion process} to preheat the high solids waste stream 
recovering heat from at least one of the fuel , steam , hot gasses , and { TAIL ~ hot fluid } exiting { HEAD ~ the energy conversion process } to preheat the high solids waste stream
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH