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Catalyst for hydro-upgrading of inferior diesel

A technology for hydrotreating and upgrading low-quality diesel oil, applied in refining to remove heteroatoms, etc., can solve problems such as low activity, achieve high desulfurization, and increase the effect of improving the range.

Active Publication Date: 2012-11-14
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 high-activity low-quality diesel hydro-upgrading catalyst for the shortcomings of low activity of the existing silica-alumina-containing diesel hydro-upgrading catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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 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.

[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, s...

example 1

[0051] Take by weighing 515 grams of aluminum trichloride (Beijing Chemical Reagent Factory product), dissolve into 1.6 liters of aluminum trichloride solution al(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 b1; Get the modulus of industrial grade as 3.26, SiO 2 Content is 220 milliliters of water glass solutions (catalyst Changling branch company product) of 280 grams per liter, be diluted with deionized water into 1000 milliliters of solution c1; Get 75 grams of sodium hydroxide, be dissolved into 150 milliliters of solutions d1 with deionized water.

[0052] 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 t...

example 2

[0054] 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 o3 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 (catalyst Changling branch company product) 60 milliliters, be 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.

[0055] 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 agin...

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Abstract

The invention provides a catalyst for hydro-upgrading of inferior diesel. The catalyst contains a carrier containing silicon oxide-aluminum oxide, aluminum oxide and a Y type molecular sieve and a metal component having hydrogenation activity loaded on the carrier. The catalyst is characterized in that: the silicon oxide-aluminum oxide comprises two different types of silicon oxide-aluminum oxide; and the difference of the N values of the different types of silicon oxide-aluminum oxide is between 0.02 and 0.2, wherein N is equal to P1 / P2, P1 is an area of a peak of which the chemical shift in the solid 27Al NMR spectrogram of the silicon oxide-aluminum oxide is 60+-0.1 to 0.2ppm, and P2 is an area of a peak of which the chemical shift in the solid 27Al NMR spectrogram of the silicon oxide-aluminum oxide is 5+-0.1 to 0.2ppm. Compared with the prior art, the catalyst provided by the invention has better inferior diesel hydro-upgrading property.

Description

technical field [0001] The invention relates to a hydrogenation upgrading catalyst, in particular to a catalyst for hydrogenation upgrading of low-quality diesel oil. 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 upgrading catalysts generally contain a support and at least one Group V...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/08
Inventor 辛靖董松涛曾双亲聂红李明丰王奎胡志海张毓莹张润强石亚华李大东
Owner CHINA PETROLEUM & CHEM CORP