Method for treating residual oil by combined process
A combined process and residual oil technology, which is applied in the treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., can solve the problems that cannot fundamentally change the pressure drop growth trend of the pre-reactor, unfavorable stable operation of the device, etc.
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Embodiment 1
[0071]The hydrogenation pretreatment reactor A described in embodiment 1, the hydrogenation pretreatment reactor B, and the hydrogenation pretreatment reactor C residual oil feed all adopt raw material A, and the properties are shown in Table 1, and 30% of the catalytic cracking unit will be FCC gasoline and all FCC heavy cycle oil are recycled to the hydrotreating reaction zone, and their properties are shown in Table 2. Among them, the FCC heavy cycle oil is all distributed to hydropretreatment reactor A, the proportion of FCC gasoline distributed to hydropretreatment reactor B is 10%, and the proportion of FCC gasoline distributed to hydropretreatment reactor C is 20%. The total catalyst loading, feed properties and feed amount of the hydropretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reactor C are exactly the same, and the hydrogenation pretreatment reactor A, Catalysts in Hydrogenation Pretreatment Reactor B, Hydrogenation P...
Embodiment 2
[0073] In embodiment 2, all adopt residual oil raw material B in the described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C, the catalytic cracking gasoline of 30% with catalytic cracking unit and All the catalytic cracking heavy cycle oil is recycled to the hydrogenation pretreatment reaction zone, in which the catalytic cracking heavy cycle oil is all distributed to the hydrogenation pretreatment reactor A, and the proportion of the catalytic cracked gasoline distributed to the hydrogenation pretreatment reactor B is 15% , The proportion of catalytically cracked gasoline distributed to hydropretreatment reactor C is 15%. The space velocity of each reverse feed is different, and the volume space velocity of liquid A in the hydrogenation pretreatment reactor is 0.20h -1 , the hourly volumetric space velocity of liquid B in the hydrogenation pretreatment reactor is 0.32h -1 , the volumetric space velocity of l...
Embodiment 3
[0075] In Example 3, the raw material A is used in the hydrogenation pretreatment reactor A, the raw material B is used in the hydrogenation pretreatment reactor B, and the raw material C is used in the hydrogenation pretreatment reactor C. The properties of the residual oil raw materials used are shown in the table 1. Recycle 50% of the catalytic cracking gasoline and all the catalytic cracking heavy cycle oil in the catalytic cracking unit to the hydrogenation pretreatment reaction zone, in which the catalytic cracking heavy cycle oil is all distributed to the hydrogenation pretreatment reactor A and to the hydrogenation pretreatment reactor The proportion of FCC gasoline in hydrogen pretreatment reactor B is 25%, and the proportion of FCC gasoline allocated to hydropretreatment reactor C is 25%. The feed amount of described hydrogenation pretreatment reactor A, hydrogenation pretreatment reactor B, hydrogenation pretreatment reactor C is the same, and described hydrogenation...
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