Method for preparing clean gasoline
A gasoline and clean technology, applied in the field of preparation of clean gasoline, can solve problems such as poor economy and short catalyst life, and achieve the effect of increasing octane number and making up for the large loss of octane number
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Embodiment 1
[0035] Put 2.5g TS-1 titanium silicon molecular sieve (prepared according to the method of US4,410,501 Example 1) and 0.5g phosphoric acid (85w%) in a 1 liter glass autoclave, and add 55g FCC gasoline, 16g methanol, 30w% After sealing 24.5 g of hydrogen peroxide solution, the suspension was stirred with a magnetic stirrer. After the temperature was raised to 60° C., it was kept at a reaction pressure of 1.0 MPa for 6 hours, and the reaction was completed. After the reaction solution was cooled to room temperature, the titanium-silica molecular sieve catalyst was removed by centrifugation, and after the phase separation in the separatory funnel, the remaining methanol, phosphoric acid catalyst and the sulfur-containing and nitrogen-containing polar substances produced by the reaction were combined with the reaction produced The water was equally separated to obtain 56.1 g of light yellow FCC-modified gasoline. Analyzed by gas chromatography: modified gasoline contains 8.7w% ether; ...
Embodiment 2
[0037] Put 2.5g Ti-β zeolite (prepared by yourself according to SP9101798 Example 1 method) and 1g macroporous cationic temperature-resistant resin catalyst in a 1 liter glass autoclave, and add 55g FCC gasoline, 32g isopropanol, 30% peroxide After sealing 24.5 g of hydrogen solution, the suspension was stirred with a magnetic stirrer. After the temperature was raised to 80° C., the reaction pressure was maintained at 0.5 MPa for 6 hours, and the reaction was completed. After the reaction solution was cooled to room temperature, the epoxidation catalyst and the alkoxylation catalyst were removed by centrifugation, and the phases were separated in a separatory funnel to obtain 56.9 g of light yellow FCC modified gasoline. Analyzed by gas chromatography: upgraded gasoline contains 8.1w% ether; measured by FIA method, the olefin content of FCC gasoline has decreased from 45w% to 38.7w%; measured by microcoulometric method, the sulfur content in FCC gasoline has decreased from 1500μg / ...
Embodiment 3
[0039] The process route of the fixed bed continuous method is adopted. Mix 40ml of TS-1 molecular sieve catalyst (same as Example 1) and 10ml of macroporous cationic temperature-resistant resin catalyst in a fixed bed reactor. The reaction temperature is 60℃, the reaction pressure is 1.0MPa, and the methanol / oil (weight) is 0.35. , 30w% hydrogen peroxide / oil (weight) is 0.2, FCC gasoline feed space velocity is 1.0h -1 Under the condition of (liquid hourly volumetric space velocity), continuous operation for 1000 hours. The sampling analysis results are as follows: Analyzed by gas chromatography, the ether content in the product is 9.3% by weight; measured by FIA method, the olefin content of FCC gasoline has decreased from 45% to 34.5%; measured by microcoulometric method in FCC gasoline The sulfur content of the gasoline was reduced from 1500μg / g to 336μg / g; the nitrogen content was reduced from 69μg / g to 11.3μg / g; the RON value of the upgraded gasoline was 91.6, which was an in...
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