Modification method of gasoline cut fraction
A gasoline fraction and upgrading technology, which is applied in the petroleum industry, refining hydrocarbon oil, etc., can solve the problems of unfavorable catalyst long-cycle operation and low operating pressure, etc.
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Embodiment 1
[0033] FCC gasoline A and hydrogen are first contacted with the hydrorefining catalyst CH-18 at a hydrogen partial pressure of 3.2MPa, a temperature of 290℃, and a liquid hourly space velocity of 4.0h -1 , The hydrogen-oil ratio is 400v / v. After the reaction effluent is mixed with hydrogen without intermediate stripping, it is contacted with the octane recovery catalyst RIDOS-1. The hydrogen partial pressure is 3.2MPa, the temperature is 350℃, and the liquid space-time Speed 1.5h -1 , React under the condition of 400v / v hydrogen-oil ratio, separate the reaction effluent to obtain gasoline product, and recycle the recovered hydrogen-rich gas. Operating conditions and gasoline product properties are shown in Table 2. From Table 2, it can be seen that the sulfur content in gasoline products is only 21.5ppm, the desulfurization rate is as high as 97.0%, the olefin content drops from 36.9v% to 1.6v%, and the antiknock index The loss was only 1.6 units.
Embodiment 2
[0035] FCC gasoline A and hydrogen are first contacted with the hydrorefining catalyst CH-18 at a hydrogen partial pressure of 3.2MPa, a temperature of 290℃, and a liquid hourly space velocity of 4.0h -1 , The hydrogen-oil ratio is 400v / v. The reaction effluent is mixed with hydrogen after intermediate stripping, and then contacted with the octane recovery catalyst RIDOS-1. The hydrogen partial pressure is 3.2MPa, the temperature is 350℃, and the liquid hourly space velocity 1.5h -1 , React under the condition of a hydrogen-to-oil ratio of 300v / v, separate the reaction effluent to obtain gasoline products, and recycle the recovered hydrogen-rich gas. Operating conditions and gasoline product properties are shown in Table 2. From Table 2, it can be seen that the sulfur content in gasoline products is only 12.6ppm, the desulfurization rate is as high as 98.2%, the olefin content drops from 36.9v% to 0.01v%, and the antiknock index The loss was only 0.3 units.
Embodiment 3
[0037] FCC gasoline B and hydrogen are first contacted with the hydrorefining catalyst CH-18 at a hydrogen partial pressure of 3.2MPa, a temperature of 280℃, and a liquid hourly space velocity of 5.0h -1 , The hydrogen-oil ratio is 450v / v, and the reaction effluent is mixed with hydrogen after intermediate stripping, and then contacted with the octane recovery catalyst RIDOS-1. The hydrogen partial pressure is 3.2MPa, the temperature is 370℃, and the liquid hourly space velocity. 1.5h -1 , React under the condition of a hydrogen-to-oil ratio of 300v / v, separate the reaction effluent to obtain gasoline products, and recycle the recovered hydrogen-rich gas. Operating conditions and gasoline product properties are shown in Table 3. It can be seen from Table 3 that the sulfur content in gasoline products is only 16.3ppm, the desulfurization rate is as high as 97.4%, the olefin content drops from 46.4v% to 0.2v%, and the antiknock index The loss was only 0.5 units.
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