A method for catalytic diesel hydrogenation conversion to aromatics
A catalytic diesel and hydrogenation conversion technology, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve the problem of poor selectivity of single-ring aromatics, achieve high selectivity of single-ring aromatics, reduce processing costs, and improve Effect of Hydrogen Utilization Efficiency
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[0040] Embodiment 1~3 all adopts flow process of the present invention, figure 1 The combined process flow shown. After being heated by the heating furnace, the high-aromatic catalytic diesel oil is mixed with circulating hydrogen and enters the I hydrorefining reaction zone for hydrodesulfurization, polycyclic aromatic hydrocarbons selective hydrogenation saturation and other reactions; the obtained oil is mixed with circulating hydrogen and enters II hydrorefining reaction zone The reaction zone carries out further hydrodesulfurization reaction and aromatics selective reaction; the obtained oil is mixed with circulating hydrogen and enters the hydrocracking reaction area for hydrocarbon hydroconversion reaction; the obtained oil is separated and fractionated to obtain gas, pumice Naphtha, heavy naphtha, diesel fractions. Part of the diesel is recycled back to the II hydrorefining reaction zone, and part of the diesel is sent out of the unit. The gas is recycled through the...
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