Hydro-conversion catalyst for heavy oil and residual oil and its preparing process

A residue hydrogenation and catalyst technology, which is applied in the direction of naphtha catalytic reforming, etc., can solve the problem of inability to use heavy oil, residue hydrogenation conversion process, poor acid regulation effect on catalyst surface, stable denitrification and decarbonization activities problems such as poor performance, to achieve the effects of low cost, easy molding, and increased hydrogenation and carbon residue removal.

Inactive Publication Date: 2003-10-15
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0004] CN1098433A, CN1253854A, CN98121076.7 and other patents disclose residual oil hydrodenitrogenation / conversion catalysts. The additives for adjusting the acidity of the catalyst are added during the catalyst preparation process, and the acidity adjustment effect on the surface of the catalyst is relatively poor, especially the B acid. In terms of catalyst performance, it is poor in denitrification and carbon removal activity and stability
[0006] CN1110304A, CN1015638B, CN96120987.9 and other patents add silicon-containing compounds in the process of alumina gelation to adjust the pore structure of the catalyst, but the surface acidity of the catalyst obtained by these methods is very weak and has no conversion activity, so it is only suitable as a hydrofining catalyst , can not be used in the hydroconversion process of heavy and residual oil

Method used

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preparation example Construction

[0020] The specific optimum operating conditions for the preparation of the silicon-containing aluminum hydroxide used in the present invention are:

[0021] The concentration of sodium metaaluminate solution is 5gAl 2 o 3 / l~60gAl 2 o 3 / l. The silicon-containing compound is preferably sodium silicate (commonly known as water glass), and the silicon dioxide contained in the sodium silicate solution is adjusted to be 5g / l-40g / l, and the amount of the silicon-containing compound accounts for 0%-50% of the total amount added. The gel forming temperature is controlled at 15°C to 35°C according to the desired pore properties of the silicon-containing aluminum hydroxide, preferably between 18°C ​​and 30°C, and most preferably between 18°C ​​and 25°C. The concentration of carbon dioxide is controlled at 10v%-50v% (preferably 20v%-40v%). When the pH value of the glue-forming liquid is controlled to be 9-12, carbon dioxide is stopped. Aging may or may not be performed, and the ag...

Embodiment 1

[0026] (1) Preparation of silicon-containing aluminum hydroxide

[0027] Set the concentration to 30gAl 2 o 3 / l of sodium metaaluminate solution is placed in a gel-forming tank, the temperature is controlled at 23°C, and the concentration of SiO is 20g 2 / l sodium silicate solution, stir evenly, add sodium silicate as SiO 2 The content calculated in the silicon-containing aluminum hydroxide is 2.0% by weight, and the carbon dioxide gas with a concentration of 30v% is introduced until the pH value of the slurry is 11. The carbon dioxide gas is stopped, and the slurry is aged for 0.5hr under stirring, and then carried out Filter, add deionized water to the filter cake and re-pulp and stir, and then add the remaining part of the calculated amount of sodium silicate solution to make the silicon-containing compound with SiO 2 The final content calculated in the silicon-containing aluminum hydroxide is 8.0m%, and then aged for 0.5 hours, the aging temperature is 25 ° C, filtered...

Embodiment 2

[0031] (1) The preparation of silicon-containing aluminum hydroxide is the same as in Example 1 (1)

[0032] (2) Preparation of catalyst

[0033] Compared with embodiment 1 (2), be that 9.0% dilute ammonia water dissolving 20.0g analytical pure boric acid with concentration is mixed with 200ml B-NH 3 Solution, to get solution C, correspondingly reduce the amount of water in mixed solution B by 200g, increase peptizing acid or TiCl 3 The amount of the solution is to neutralize the added ammonia water, first add C to A by spraying, and add 20.0 g of the remaining part of the calculated amount of boric acid in the form of fine powder solids, mix well and then knead 0.5 to 1.0 After 1 hour, add mixed solution B and knead again, and other material consumption and operating conditions are identical with embodiment 1 (2), namely cost example.

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Abstract

The present invention belongs to the field of heavy oil and residual oil hydrotransforming technology. The heavy oil and residual oil hydrotransforming catalyst has siliceous alumina carrier, relatively strong acidity and especially protonic acid amount higher than that in available residual oil hydrotransforming catalyst. The siliceous alumina carrier is prepared through one colloid forming process, during and after which silicon is added to make alumina possess more strong acid centers and ideal pore structure. The catalyst of the present invention is used in the hydrotransforming treatment of heavy oil, residual oil and other inferior oil material.

Description

technical field [0001] The invention relates to a heavy oil and residual oil hydroconversion catalyst and a preparation method thereof, and also relates to a silicon-containing aluminum hydroxide used in the preparation of the catalyst and a preparation method thereof. The invention belongs to the technical field of petroleum processing catalysts, in particular to the technical field of heavy and residual oil hydrogenation conversion catalysts and their preparation. Background technique [0002] In the hydrotreating process of heavy oil and residual oil, part of high-quality diesel oil, naphtha and high-quality VGO as hydrocracking and ethene decomposition materials can be obtained, and the unconverted part can be used as catalytic cracking raw materials. With the increasingly stringent environmental protection regulations, the quality requirements for refined oil are getting higher and higher, so the demand for environmentally friendly clean fuel...

Claims

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Application Information

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IPC IPC(8): C10G35/06
Inventor 袁胜华苏晓波张皓方维平付泽民段日
Owner CHINA PETROLEUM & CHEM CORP
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