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Hydrogenation modifying catalyst for poor ignition quality fuel and its preparing process

A technology for hydrotreating and upgrading low-quality diesel oil, applied in the petroleum industry, refining hydrocarbon oil, etc., can solve the problems of low activity, achieve high desulfurization, and increase the improvement range.

Active Publication Date: 2009-06-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a new method for preparing a high-activity low-quality diesel oil hydro-upgrading catalyst and the catalyst prepared by the method in view of the low activity of the existing silica-alumina-containing diesel hydro-upgrading catalyst

Method used

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preparation example Construction

[0018] The preparation method of the mixed solution of pseudo-boehmite and water can be obtained by directly mixing any commercially available pseudo-boehmite with water, or by adopting a conventional method for preparing pseudo-boehmite preparation. For example, it may be that at least one aluminum-containing compound solution is mixed with an alkali or acid solution, gelled and aged, and the aging conditions are: pH 7-8.5, temperature 30-75°C, time 5 — 120 minutes.

[0019] The aluminum-containing compound is selected from one or more of aluminum sulfate, sodium metaaluminate, aluminum nitrate, aluminum trichloride, aluminum alkoxide, and aluminum alkyl, preferably aluminum sulfate, sodium metaaluminate, One or more of aluminum nitrate and aluminum trichloride.

[0020] The alkali is a hydroxide or a salt that is hydrolyzed in an aqueous medium to make the aqueous solution alkaline, and the preferred hydroxide is selected from one or more of ammonia, sodium hydroxide, and ...

example 1

[0052] Take by weighing 515 grams of aluminum trichloride (Beijing Chemical Reagent Factory product), dissolve into 1.6 liters of aluminum trichloride solution a1(Al 2 o 3 Concentration is 65 grams / liter); 500 milliliters of concentrated ammonia water (product of Beijing Yili Fine Chemicals Co., Ltd., concentration is 25%-28%) is diluted with deionized water into 1500 milliliters of solution b1; Get the modulus of industrial grade as 3.26, SiO 2 Content is 220 milliliters of water glass solutions (Changling refinery product) of 280 grams per liter, is diluted with deionized water into 1000 milliliters of solution c1; Get 75 grams of sodium hydroxide, is dissolved into 150 milliliters of solutions d1 with deionized water.

[0053] Add 1.7 liters of deionized water into a 2-liter reaction tank, stir and heat to 40 ° C, and flow into solutions a1 and b1, adjust the flow rate so that the pH of the reaction system is 7, and the reaction product enters the aging tank for aging. Co...

example 2

[0055] Take by weighing 800 grams of aluminum nitrate (product of Beijing Chemical Reagent Factory), dissolve into 1.6 liters of aluminum nitrate solution a2(Al 2 o 3 Concentration is 65 grams per liter); 500 milliliters of concentrated ammonia water (product of Beijing Yili Fine Chemical Co., Ltd., concentration is 25%-28%) is diluted with deionized water into 1500 milliliters of solution b2; Get the modulus of industrial grade as 3.26, SiO 2 Content is 280 grams per liter of water glass solution (Changling Oil Refinery product) 60 milliliters, is diluted into 240 milliliters of solutions c2 with deionized water; Get 75 grams of sodium hydroxide, be dissolved into 150 milliliters of solutions d2 with deionized water.

[0056] Add 1.7 liters of deionized water into a 2-liter reaction tank, stir and heat to 50 ° C, and flow into solutions a2 and b2, adjust the flow rate so that the pH of the reaction system is 8, and the reaction product enters the aging tank for aging. The c...

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PUM

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Abstract

The invention discloses a hydro-upgrading catalyst for inferior diesel and a preparation method thereof. The preparation method comprises the steps of: mixing, forming and roasting silicon oxide-alumina, alumina and / or a precursor of the alumina and Y-shaped molecular sieve, then introducing an effective dose of metallic components selected from at least one Group VII and at least one Group VI into the roasted forming composition; the preparation method is characterized in that the silicon oxide-alumina is selected from at least two the silicon oxide-alumina having different N values, the difference between the N values of the silicon oxide-alumina is 0.02-0.2. Compared with the prior art, the catalyst provided by the invention method has better upgrading performance for the inferior diesel.

Description

technical field [0001] The invention relates to a hydrogenation-upgrading catalyst and a preparation method thereof, in particular to a catalyst for hydrogenation-upgrading of low-quality diesel oil and a preparation method thereof. Background technique [0002] As the market demand for diesel oil increases year by year, the improvement of low-quality diesel oil has attracted more and more attention. The upgrading of coal liquefied diesel and catalytic diesel, which accounts for a large proportion in my country's diesel pool, has also attracted people's attention. Their common characteristics are high content of nitrogen and aromatics, low cetane number, high density, and poor storage stability. In the presence of a hydrogenation-upgrading catalyst, the hydrogenation-upgrading of these low-quality diesel oils can remove nitrogen and reduce the content of aromatics, increase the cetane number of diesel oil, and improve the quality of diesel oil. [0003] Hydrogenation upgrad...

Claims

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Application Information

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IPC IPC(8): C10G45/12
Inventor 辛靖董松涛曾双亲聂红李明丰张毓莹蒋东红张润强
Owner CHINA PETROLEUM & CHEM CORP
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