A kind of low-sulfur diesel oil modifier and its preparation method and application
A low-sulfur diesel and modifier technology, which is used in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems that the product performance cannot meet the requirements and the high freezing point of the product, and achieves widening the source of raw materials, dense lubricating film, The effect of lowering the freezing point
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Embodiment 1
[0032] Preparation of tung oil methyl ester: add 800 g of tung oil, 160 g of methanol, and 8 g of potassium hydroxide in a 2L autoclave, and carry out stirring reaction, the reaction temperature is 60 ° C, and the reaction time is 20 min. The glycerin product is 76.2g, and then the upper layer product is washed three times with 50°C hot water, and the washed product is distilled at 2000Pa and 60°C for 2 hours to obtain tung oil methyl ester biodiesel.
[0033] 146g of 1,4-diamino-2-butene was added to the autoclave, carbon dioxide was introduced into the autoclave to make the carbon dioxide in a supercritical state, the control pressure was 10.5MPa, the temperature was 45°C, and stirring was started. 500 g of tung oil methyl ester biodiesel was gradually added to the reaction kettle, so that the tung oil methyl ester biodiesel was added within 2 h, and the reaction was continued for 4 h to complete the reaction. The reaction system is passed into the expansion separator, the p...
Embodiment 2
[0035] 99g of 1,4-diamino-2-butene was added to the autoclave, carbon dioxide was introduced into the autoclave to make the carbon dioxide in a supercritical state, the control pressure was 13.5MPa, the temperature was 60°C, and stirring was started. 500 g of tung oil methyl ester biodiesel was gradually added into the reaction kettle, so that the addition of tung oil methyl ester biodiesel was completed within 1 h, and the reaction was continued for 3 h to complete the reaction. The reaction system is passed into the expansion separator, the pressure is reduced to normal pressure, and the supercritical carbon dioxide is converted into ordinary gas-phase carbon dioxide, which is collected and reused after being discharged. The product was distilled under reduced pressure at a pressure of 65Pa and 200°C for 2h to obtain a low-sulfur diesel fuel modifier product. The conversion rate of reaction molecules was 77.4%, the freezing point was -20.6°C, and the water layer was not turb...
Embodiment 3
[0037] 292g of 1,4-diamino-2-butene was added to the autoclave, carbon dioxide was introduced into the autoclave to make the carbon dioxide in a supercritical state, the control pressure was 7.5MPa, the temperature was 32°C, and stirring was started. 500 g of tung oil methyl ester biodiesel was gradually added into the reaction kettle, so that the addition of tung oil methyl ester biodiesel was completed within 3 h, and the reaction was continued for 5 h to complete the reaction. The reaction system is passed into the expansion separator, the pressure is reduced to normal pressure, and the supercritical carbon dioxide is converted into ordinary gas-phase carbon dioxide, which is collected and reused after being discharged. The product was distilled under reduced pressure at a pressure of 65Pa and 200°C for 2h to obtain a low-sulfur diesel fuel modifier product. The conversion rate of reaction molecules was 78.6%, the product freezing point was -22.8°C, and the water layer was ...
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