A portion of the hydrogen gas introduced at {HEAD ~ the inlet} to {TAIL ~ the preheater} is ultimately consumed either to replenish hydrogen stripped from solvent or to actually stabilize coal free radicals 
A portion of the hydrogen gas introduced at { HEAD ~ the inlet } to { TAIL ~ the preheater } is ultimately consumed either to replenish hydrogen stripped from solvent or to actually stabilize coal free radicals
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH