The critical minimum gas flow rate for any given coal oil slurry will depend on {HEAD ~ numerous factors} such as {TAIL ~ coal concentration}, coal particle size distribution, composition of the solvent , and type of coal 
The critical minimum gas flow rate for any given coal oil slurry will depend on { HEAD ~ numerous factors } such as { TAIL ~ coal concentration } , coal particle size distribution , composition of the solvent , and type of coal
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH