{HEAD ~ The first catalytic bed} promotes {TAIL ~ the hydroconversion} of the triglycerides, in a first reaction zone, with low generation of CO and CO2 gases and high generation of n paraffins of even number of carbon atoms 
promotes
{ HEAD ~ The first catalytic bed } promotes { TAIL ~ the hydroconversion } of the triglycerides , in a first reaction zone , with low generation of CO and CO2 gases and high generation of n paraffins of even number of carbon atoms
HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH