Hydrotreatment and catalytic cracking deeply-combined method for residuum
A technology of hydrotreating and catalytic cracking, which is applied in the fields of hydrotreating process, petroleum industry, and processing hydrocarbon oil, etc. It can solve the problems of unsatisfactory high-quality diesel products, limited naphtha diesel yield, and reduced total yield of gasoline products. To achieve the effects of reducing the difficulty of hydrogenation reaction and processing severity, increasing the yield of high value-added products, improving logistics distribution and mass transfer
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[0035] This embodiment adopts the combined method of residual oil hydrotreating and catalytic cracking provided by the present invention, and all liquid phase products of hydrotreating (that is, hydrogenated oil) directly enter the catalytic cracking unit without fractionation, and the catalytic cracking reaction effluent is fractionated to dry Gas, liquefied gas, catalytic cracking gasoline fraction, catalytic cracking diesel fraction, catalytic cracking cycle oil and catalytic oil slurry, among which the obtained catalytic cracking heavy cycle oil and catalytic oil slurry are all circulated into the hydrotreating unit for hydroprocessing, and introduced The FCC heavy cycle oil and oil slurry obtained from other catalytic cracking units are used, so that the total FCC heavy cycle oil and oil slurry can reach 30% of the residual oil feed, and straight-run wax oil is omitted as the diluent oil of the residual oil . Residue hydrogenation raw material oil is Middle East mixed res...
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