... serial zeolites are mainly applied for catalytia cracking, catalytic dewaxing,toluene disproportionation, xylene isomerization,ethylene-benzene alkylation, ... methanol converting to gasoline,methanol catalytic dehydration to produce dimethyl ether,and lower carbon hydrocarbon ... of raw oil 40°Cbasic nitrogen>500ppmairspeed≥3h-1 gas(C3~C4 is 98% )≤16%petrol(octane number ...