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