A kind of production method of high quality low condensation diesel oil
A production method and technology for low-quality diesel oil, which are applied in the fields of hydrocarbon oil treatment products, petroleum industry, treatment of hydrocarbon oil, etc., can solve the still existing contradiction between the pour point depressant effect and the yield of diesel fractions, the limitation of the yield of diesel fractions and the depressant effect, Reduce the service life of the hydrogen condensation catalyst and other problems, so as to prevent the coking reaction of polycondensation, improve the condensation reduction effect, and reduce the temperature rise and temperature drop effect.
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[0038] This example is an ebullating bed hydrogenation test using a hydrodepreciation catalyst and a powdered hydrorefining catalyst. See attached for specific operation procedure figure 1 . The volume ratio of the powdered hydrofinishing catalyst to the hydrodepressing catalyst in Example 1 is 1:3, and the volume ratio of the powdered hydrofining catalyst to the hydrodepressing catalyst in Examples 2-3 is 2:1. The low-quality diesel oil and the powdered hydrorefining catalyst are fully mixed in the mixer to obtain a uniform feed, and then enter the ebullating bed reactor through the delivery pump, and the high-pressure hydrogen enters the hydrogenation tank from the bottom of the ebullating bed reactor in the way of feeding above. The ebullating bed reactor of the depressing catalyst keeps the catalyst in a boiling state. Under suitable reaction conditions, it is simultaneously and / or sequentially contacted with the hydrogen depreciating catalyst and the powdered hydrofining...
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