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Diesel oil hydrotreating catalyst and method for preparing the same

A hydrotreating and catalyst technology, applied in the treatment of hydrocarbon oil, petroleum industry, etc., can solve the problem of low activity, achieve high desulfurization, and increase the effect of improvement.

Active Publication Date: 2006-07-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a new method for preparing a high-activity diesel hydrotreating catalyst and the catalyst prepared by the method, aiming at the low activity of the existing silica-alumina-containing diesel hydrotreating catalyst

Method used

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preparation example Construction

[0015] 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 a solution of alkali or acid, gelled and aged, and the aging conditions are as follows: pH is 7-8.5, temperature is 30-75°C, time is 5 -120 minutes.

[0016] 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.

[0017] 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, s...

example 1

[0049] 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.

[0050] 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

[0052] 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.

[0053] 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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Abstract

The disclosed catalyst special to low-grade diesel fuel hydrotreatment comprises: given the catalyst, 1-70wt% SiO2-Al2O3 with quasi-thin diaspore structure, 1-60wt% Y-form molecular sieve, and 5-80wt% Al2O3; wherein, given the oxide, 1-15wt% VIII metal constituent, and 10-40wt% VIB metal constituent. The product is prepared by mixing, forming, baking and then adding at least one of former metal constituent.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst and a preparation method thereof, in particular to a diesel oil hydrogenation treatment catalyst and a preparation method thereof. Background technique [0002] As the market demand for diesel oil increases year by year, producing more diesel oil has become a direction for the development of the catalytic cracking process. FCC diesel is characterized by high content of sulfur, nitrogen and aromatics, low cetane number, poor storage stability, and large emissions of toxic gases during combustion. In the presence of a hydrotreating catalyst, the hydrotreating of diesel oil can remove sulfur, nitrogen and reduce the content of aromatics, so that the quality of diesel oil can be improved. [0003] Hydrotreating catalysts generally contain a carrier and at least one Group VIB and at least one Group VIII metal component supported on the carrier. Some catalysts also contain ...

Claims

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Application Information

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IPC IPC(8): C10G49/08
Inventor 辛靖董松涛聂红石亚华胡志海蒋东红曾双亲李大东
Owner CHINA PETROLEUM & CHEM CORP
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