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Preparation method of hydrotreating catalyst

A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of not being able to meet the technical requirements for processing heavy crude oil, poor stability, poor activity, etc., to achieve Increased effective utilization, increased dispersion, and improved hydrogenation performance

Active Publication Date: 2021-06-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Catalysts with the characteristics of type I active centers have better stability, but poor activity; catalysts with the characteristics of type II active centers have poor stability, but higher activity
Currently, neither of these two types of catalysts can meet the technological demands of processing heavy crude oils

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] (I) Preparation of Al-SBA-15 molecular sieve

[0072] (1) Preparation of amorphous silicone dry glue A1 and slurry: sodium aluminate solution concentration 28gal 2 O 3 / L, sodium silicate solution concentration 90gsio 2 / L, the sodium aluminate solution is placed in a rubber tank, then 0.55L sodium silicate solution, control the reaction temperature of 30 ° C, and the concentration of 40V% is obtained. 2 Gas, access CO 2 When the gas accounted for 55% of the total exchange, 0.12 L of sodium silicate solution was added, and the pH of the gel was 9.7, and then the ventilation was stable for 20 minutes, and the slurry was filtered and washed with 65 ° C to deion water to neutral. The filter cake was pushed into a solid solution of 12: 1, and the water was treated at 120 ° C, 3.5 mPa water vapor pressure for 2 hours, and after drying at 120 ° C for 6 hours, the amorphous silica aluminum product A1 was pulverized. The prepared amorphous silica A1 and deionized water were mixed...

Embodiment 2

[0081] (I) Preparation of Al-SBA-15 molecular sieve

[0082] (1) Preparation of amorphous silicone and aluminum dry glue A2 and slurry: sodium aluminate solution concentration 25 g 2 O 3 / L, sodium silicate solution concentration 120gsio 2 / L, take 0.5L aluminate solution in the tank, then add 0.58 L silicate solution, control the reaction temperature of 35 ° C, CO of 55V% in the concentration of 55V 2 Gas, when the pH is 10.2, then the ventilation is stable for 20 minutes, washed to neutral, the filter cake is pushed into the volume of 10: 1 plus water, at 130 ° C, 3.2 MPa water vapor pressure for 2.5 hours, in After drying at 120 ° C for 8 hours, crushing the sieved amorphous silica aluminum product A2. The prepared amorphous silica A2 and deionized water are mixed, and the slurry is formed; wherein the mass ratio of amorphous silicone and water is 19:81;

[0083] (2) The acidic aqueous solution containing the P123 triblock copolymer is formulated; the P123 triblock copolymer ...

Embodiment 3

[0091] (I) Preparation of Al-SBA-15 molecular sieve

[0092] (1) Preparation of amorphous silicone dry glue A3 and slurry: sodium aluminate solution concentration 18 gal 2 O 3 / L, sodium silicate solution concentration 50gsio 2 / L, take 0.78L sodium aluminate solution into the tank, then add 0.12 L of sodium silicate solution, control the reaction temperature of 23 ° C, and pass into a concentration of 45V% CO 2 Gas, controlling the pH of the rubber of 8.8, then venting is stable for 20 minutes, the slurry is filtered and washed to neutral with 75 ° C to neutral, the filter cake is in the solid solution of 11: 1 plus water, at 120 ° C, 3.5 MPa The water vapor pressure was treated for 2 hours, and after 6 hours at 120 ° C for 6 hours, the amorphous silica aluminum product A3 was pulverized. The prepared amorphous silica A3 and deionized water were mixed, and the slurry was formed; wherein the amorphous silicone dry glue and water mass ratio was 24:76;

[0093] (2) The acidic aque...

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Abstract

The invention discloses a preparation method of a hydrotreating catalyst. The method comprises the following steps: (i) preparing an Al-SBA-15 molecular sieve by taking amorphous silica-alumina dry glue as a raw material and adopting a P123 triblock copolymer as a template agent; (ii) subjecting the Al-SBA-15 mesoporous molecular sieve prepared in the step (i) and aluminum oxide to mixing, kneading and forming so as to obtain a carrier; and (iii) impregnating the carrier obtained in the step (ii) with an impregnating solution containing an active metal component and a trihydroxymethyl compound, and then carrying out drying and roasting to obtain the hydrotreating catalyst. The hydrotreating catalyst shows relatively high activity when being used in a hydrogenation denitrification reaction of heavy distillate oil.

Description

Technical field [0001] The present invention relates to a method of preparing a catalyst, particularly a method of preparing a catalyst suitable for heavy distillate oil hydrogenation treatment. Background technique [0002] The degree of abundance of crude oil is continuously deepening, and the content of impurities such as nitrogen, sulfur, oxygen and metal in crude oil increases. The presence of these impurities not only causes catalyst poisoning during subsequent treatment, but also discharges a large amount of sulfur oxide and nitrogen. Harmful gases such as oxides, endangering human health and environmental protection. High use of high activity, catalysts with good stability not only cause process conditions to alleviate, but also reduce hydrogen consumption, achieving energy saving and consumption. [0003] Hydrogenation treatment catalysts generally use metal oxides containing Group VIII and Group VIBs to a fused inorganic porous material carrier, generally used alumina, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03C10G45/12
CPCB01J29/0341C10G45/12C10G2300/202B01J2229/186
Inventor 唐兆吉樊宏飞
Owner CHINA PETROLEUM & CHEM CORP
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