Hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst and catalyst technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low activity of hydrogenation catalysts and short service life of catalysts

Active Publication Date: 2017-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the disadvantages of low activity of hydrogenation catalysts or short service life of catalysts in the prior art, the present invention provides a new method for preparing hydrogenation catalysts and hydrogenation catalysts prepared by the method. The catalysts prepared by the method not only The activity is significantly improved, and the service life of the catalyst is also significantly improved

Method used

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  • Hydrogenation catalyst and preparation method thereof
  • Hydrogenation catalyst and preparation method thereof
  • Hydrogenation catalyst and preparation method thereof

Examples

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preparation example Construction

[0022] According to the preparation method of the hydrogenation catalyst provided by the invention, the preparation method comprises the following steps:

[0023] (1) The water-soluble salt of the hydrogenation metal active component and the organic complexing agent are loaded on the carrier by the impregnation method, then dried and roasted to obtain a semi-finished catalyst, and the roasting conditions are such that the total amount of the semi-finished catalyst is used as a benchmark , the carbon content in the semi-finished catalyst is 0.03-0.5% by weight;

[0024] (2) using the solution containing the organic complexing agent as the impregnating liquid, the semi-finished catalyst obtained in step (1) is impregnated, then dried without roasting;

[0025] (3) Loading metal elements as additives on the carrier;

[0026] Wherein, step (3) is performed before, during and after step (1) and before step (2).

[0027] According to the present invention, preferably, the calcinat...

Embodiment 1

[0082] This example is used to illustrate the hydrogenation catalyst and its preparation method according to the present invention.

[0083] Weigh 270 grams of magnesium nitrate, add deionized water and stir to dissolve, add deionized water to 850 ml, saturated impregnate 1000 grams of alumina carrier for 2 hours, then dry at 120 ° C for 2 hours, and roast at 400 ° C for 4 hours to obtain a water absorption rate of 0.85 magnesium-containing alumina Z1.

[0084] Weigh 54 grams of molybdenum trioxide, 21 grams of basic nickel carbonate, 13 grams of phosphoric acid, and 30 grams of citric acid into 140 grams of deionized water, heat and stir to dissolve to obtain a clear impregnation solution, and impregnate 200 grams of the above solution with saturated impregnation method. Magnesium-containing alumina Z1 carrier, the impregnation time is 2 hours, and then dried at 120°C for 2 hours, and then it is calcined under the state of flowing air, the calcining temperature is 360°C, and ...

Embodiment 2

[0088] This example is used to illustrate the hydrogenation catalyst and its preparation method according to the present invention.

[0089] Weigh 37 grams of lanthanum nitrate, add deionized water and stir to dissolve, add deionized water to 850 ml, saturate and impregnate 1000 grams of alumina carrier for 2 hours, then dry at 100 ° C for 2 hours, and roast at 500 ° C for 4 hours to obtain a water absorption rate of 0.85 lanthanum-containing alumina Z2.

[0090] Weigh 30 grams of nickel nitrate, 45 grams of ammonium metatungstate, and 15 grams of oxalic acid into 140 grams of deionized water, stir and dissolve to obtain a clear solution, and use the saturated impregnation method to impregnate 200 grams of lanthanum-containing alumina Z2 carrier with the above solution. The time is 2 hours, then, dry 2 hours at 120 DEG C, then it is roasted under the state that feeds air flow, and roasting temperature is 400 DEG C, and the time is 2 hours, and air agent ratio is 1.0 liters / (gr...

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Abstract

The invention relates to a hydrogenation catalyst and a preparation method thereof. The preparation method comprises the following steps: (1) loading a water-soluble salt of a hydrogenation metal active component and an organic complexing agent onto a carrier by using an impregnation method and then carrying out drying and roasting so as to obtain a semi-finished catalyst, wherein a roasting condition allows the carbon content of the semi-finished catalyst to be 0.03 to 0.5 wt% on the basis of the total amount of the semi-finished catalyst; (2) impregnating the semi-finished catalyst obtained in the step (1) with a solution containing the organic complexing agent as an impregnation solution and carrying out drying without roasting; and (3) loading a metallic element used as an auxiliary agent onto the carrier; wherein the step (3) may be carried out before, during or after the step (1) and before the step (2). The catalyst prepared by using the method has obviously improved activity and service life.

Description

technical field [0001] The invention relates to a method for preparing a hydrogenation catalyst and a hydrogenation catalyst prepared by the method. Background technique [0002] The increasing awareness of environmental protection and stricter environmental regulations force the refining industry to pay more attention to the development of clean fuel production technology. In the future, vehicle fuels in the market will tend to be "ultra-low sulfur", and fuels that cannot meet emission standards will not be able to enter the market. Hydrogenation technology, as an effective means of desulfurization, is playing an increasingly important role in the production of clean vehicle fuels. Among them, high-efficiency hydrogenation catalysts are the core technology of hydrogenation technology. Therefore, the development of catalysts with higher activity and Selective new hydrogenation catalysts have become one of the most urgent needs of the oil refining industry. [0003] Hydroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/34B01J37/02C10G45/08
Inventor 张乐李明丰刘学芬聂红李会峰李大东王轶凡高晓冬杨清河胡志海
Owner CHINA PETROLEUM & CHEM CORP
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