A method for producing aviation fuel components from waste oils and fats
A waste oil and feed technology, which is applied in the direction of biological raw materials, hydrocarbon oil treatment products, fat oil/fat refining, etc., can solve the problems of chlorine and the acid value of raw materials without improvement, and achieve the effect of reducing preheating temperature and temperature rise
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preparation Embodiment 1
[0069] Preparation Example 1 Preparation of Hydrotreating Catalyst
[0070] Weigh 500 grams of pseudo-boehmite (produced from Changling Catalyst Factory), extrude it into a clover-shaped strip with a circumcircle diameter of 1.6 mm, and dry it at 120° C. for 6 hours. Take 300 grams of it, and process it for 6 hours at a temperature of 600° C. at a volume ratio of air to water vapor of 1:0.6, a gas flow rate of 1.0 standard cubic meters / kg.hour, and a temperature of 600° C. to obtain the carrier S .
[0071] Weigh 100 grams of carrier S, impregnate with 86 ml of aqueous solution containing 5.8 grams of ammonium paramolybdate, 29.7 grams of nickel nitrate and 53.4 grams of ammonium metatungstate for 2 hours, dry at 120°C for 3 hours, and roast at 450°C for 4 hours to obtain hydrogenation Treat Catalyst C. MoO in the catalyst 3 , NiO and WO 3 The weight contents are respectively 2.8%, 4.4% and 25.7%.
preparation Embodiment 2
[0075] Preparation Example 2 Preparation of Hydroconversion Catalyst
[0076] Catalyst is prepared according to the method of Example 1 in CN102205250A, a kind of ZSM-22 molecular sieve (Changling Catalyst Factory provides, silicon-aluminum ratio 56) is mixed with Pseudo-boehmite P1-1, cinnamon powder, add nitric acid aqueous solution, After fully kneading, a clover-shaped strip with a diameter of 1.3 mm was extruded on an extruder, dried at 120° C. for 4 hours, and then calcined at 600° C. in air for 2 hours to obtain a carrier. The carrier was made of Pt(NH 3 ) 4 Cl 2 The solution was saturated impregnated, then dried at 110°C for 4 hours, and calcined at 400°C for 3 hours in an air atmosphere. Then the obtained catalyst was reduced, the reduction temperature was 350° C., the reduction time was 4 hours, and the hydrogen pressure was 0.1 MPa. The reduced catalyst is a hydrogenation conversion catalyst, and the content of ZSM-22 in the catalyst is 50.2% by weight, the cont...
Embodiment 1
[0078] (1) Waste oil methyl esterification unit
[0079] Using waste oil from the catering industry as raw material, its quality index is as follows: density 0.91g cm -3 , acid value 78 mgKOH / g oil, sulfur 35 μg / g, chlorine 29 μg / g, mechanical impurities 0.12 wt%, metal ion content 11 μg / g, saponifiable matter content 92.7 wt%, gum impurities 6.3 wt%, moisture 0.9 wt%. After mixing methanol with the above-mentioned raw materials in a ratio of 0.3:0.7, heat up and pressurize, the temperature rises to 260°C, the pressure rises to 6.5MPa, then enters the reactor, the residence time is 1 hour, and the temperature is lowered after leaving the reactor. The depressurization enters the methanol rectification column with 30 theoretical plates, and methanol separation is carried out by controlling the temperature of the tower bottom at 125°C, the temperature at the top of the tower at 67°C, the pressure at the bottom of the tower at 0.03MPa, the pressure at the top of the tower at 0.005...
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