Hydrogenation method for producing high-quality diesel oil
A diesel, high-quality technology, applied in the field of renewable energy processing, can solve the problem of short operation cycle and achieve the effect of reducing the freezing point
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[0027] The method of the present invention is specifically as follows: using one or several mixed oils in the bio-grease as the raw material oil, under the hydrogenation operation conditions, the raw material oil and hydrogen pass through the first reaction zone containing at least two hydrogenation catalysts to obtain The hydrogenation product stream is recycled in the gas separated by the high-pressure separator, and the liquid fraction obtained from the system can also be used; the liquid fraction in the first reaction zone, diesel feedstock and hydrogen are mixed into the second reaction zone containing hydrofining , the obtained hydrorefining product stream continues to pass through the third reaction zone containing a hydrogenation-upgrading catalyst with isomerization performance, and the obtained hydro-upgrading product stream is separated in the high-pressure separator for recycling, and can also be discharged from the system , Liquid fractionation to obtain the follow...
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