A method for the catalytic conversion of petroleum hydrocarbon

A method for the catalytic conversion of petroleum hydrocarbons, sulfur wax with hot regenerated cracking catalyst and the reaction occurs at a lower portion of the reactor of a catalytic cracking unit to produce oil and gas and carbon-containing catalyst upstream selectively occurs under certain reaction environment hydrogen transfer reaction and the isomerization reaction, separating the reaction oil obtained reaction product comprises a liquefied gas, gasoline and gas oil catalytic, stripped spent catalyst, recycled regenerated, wherein the catalytic gas oil, and optionally other secondary processing aromatic separation wax into the aromatic separation unit, preferably a non-aromatic-rich fraction obtained is returned to the catalytic cracking unit. The method for improving liquid yield and propylene yield, the production processes for the refining and cleaning of clean refined products provides a new way.