Method for synthesizing oil modifier by hydrogenating washing oil
A technology of modifier and oil washing, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, hydrocarbon oil treatment, etc. It can solve the problems of potential safety hazards, high hydrogenation pressure, high equipment requirements, etc. problems, to achieve the effect of stable performance, low hydrogenation pressure and high activity
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Embodiment 1
[0015] Catalyst preparation
[0016] (1) Preparation of mixed solution: Prepare ammonium molybdate, cobalt nitrate, and nickel nitrate aqueous solutions with molybdenum, cobalt, and nickel mass ratios of 14:22:64 with distilled water, and the total concentration is 1mol / L.
[0017] (2) Impregnation: At 40°C, immerse the alumina carrier washed with distilled water into the solution, keep soaking at 40°C for 8 hours, take out the carrier and dry it, and then put in fresh molybdenum of the same concentration prepared in step (1) ammonium nitrate, cobalt nitrate, nickel nitrate aqueous solution, so repeated 4 times.
[0018] (3) Roasting: Dry the impregnated carrier at 130°C, and then calcinate at 450°C to obtain molybdenum oxide, cobalt oxide and nickel oxide (where molybdenum, cobalt, and nickel account for 4% and 6% of the total catalyst mass percentage). %, 18%), and the rest are catalysts supported by alumina.
Embodiment 2
[0020] catalyst activation
[0021] In a 100ml continuous fixed-bed reactor, 80ml of the catalyst prepared in Example 1 was charged, and at a pressure of 3MPa, the catalyst was activated with carbon disulfide. Dissolve carbon disulfide accounting for 35% of the catalyst weight in 200# solvent oil to obtain a carbon disulfide concentration of 1% in the carbon disulfide activated oil. The specific activation process is as follows: first, use hydrogen to raise the temperature of the catalyst, start injecting the prepared carbon disulfide activation oil at 150°C, gradually raise the temperature to 300°C, and activate for 24 hours. The activated oil space velocity is 2 / h, and the hydrogen-to-oil ratio is 600.
Embodiment 3
[0023] Wash oil hydrogenation
[0024] After the catalyst was activated in Example 2, hydrogenation was added to the reactor to increase the pressure to 10MPa, and the high-pressure pump injected washing oil, the space velocity was controlled to 0.3 / h, the hydrogen-oil ratio was 2000, and the reaction was performed at a temperature of 360°C. The activity was stable and the reaction was stable for 800 hours. , to obtain a pale yellow transparent reaction product.
[0025] Main indicators of raw material washing oil: brown turbid appearance, irritating taste, density 1.05, total sulfur 3000ppm, bromine value 25 gBr 2 / 100g, freezing point 16°C, distillation range 230-290°C,
[0026] Product after hydrogenation: light yellow and transparent appearance, no peculiar smell, density 0.92, total sulfur 45ppm, bromine value 1 gBr 2 / 100g, freezing point -30°C, distillation range 100-290°C.
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Abstract
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Application Information
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