Combining method for residual oil hydroprocessing and catalytic-cracking, and aromatics extraction

摘要: The invention discloses a combining method for residual oil hydroprocessing and catalytic-cracking, aromatics extraction, comprising the following steps: carrying out reaction to raw material in presence of hydrogen hydrogenation catalyst; gas-liquid separation effluent hydrogenation, wherein gas phase is circularly used while liquid directly entered into catalytic-cracking device without being distilled, separating obtain dry gas, liquefied gasoline, diesel heavy fraction; recovering extract via solvent after extraction diesel; filtering solid impurity with fraction then circulating device; obtaining high cetane number from raffinate solvent. can be increasing production superior reducing aromatic hydrocarbon content diesel, obviously converting byproduct rich light simultaneously simple technological process.