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A hydrofining catalyst and a preparing method and application therefor

A hydrofining and catalyst technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of low activity of hydrofining catalysts

Active Publication Date: 2018-09-25
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 hydrofining catalysts in the prior art, the present invention provides a new method for preparing hydrofining catalysts and the hydrofining catalysts prepared by the method. The activity of the catalysts prepared by the method is significantly improved. improve

Method used

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  • A hydrofining catalyst and a preparing method and application therefor

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preparation example Construction

[0019] According to the preparation method of the hydrotreating catalyst provided by the present invention, the preparation method comprises the following steps:

[0020] (1) impregnating the carrier with the first impregnating liquid, then drying and roasting to obtain a semi-finished catalyst, the roasting conditions are such that the carbon content in the semi-finished catalyst is 0.03-0.5% by weight based on the total amount of the semi-finished catalyst; (2) The second impregnating liquid impregnates the semi-finished catalyst obtained in step (1), then drying and not roasting;

[0021] Wherein, the first impregnating liquid is an acidic aqueous solution containing a water-soluble salt of a hydrogenation active metal component and an organic complexing agent, and the second impregnating liquid is an alkaline aqueous solution containing an organic complexing agent.

[0022] According to the present invention, preferably, the roasting condition described in step (1) is such...

Embodiment approach

[0061] According to a preferred embodiment of the present invention, the inorganic heat-resistant oxide is alumina, and more preferably the carrier is alumina and a macroporous molecular sieve (ie, alumina-macroporous molecular sieve). Among them, alumina is more preferably alumina obtained after firing a hydrated alumina (aluminum hydroxide) colloidal compound.

[0062] According to a preferred embodiment of the present invention, the radial crushing strength of the carrier is 20-40N / mm, the water absorption is 0.65-1.3mL / g, the pore volume is 0.4-0.9mL / g, and the specific surface area is 200-350m 2 / g.

[0063] In the present invention, the measuring method of the water absorption rate of catalyst carrier is: the carrier (by weight) is immersed in water (by volume) for 2 hours, the ratio of carrier (by weight g) to water (by volume mL) The ratio is 1:3, and then the carrier after water absorption is separated from the water, and the water absorption volume of the carrier is...

Embodiment 1

[0083] This example is used to illustrate the hydrorefining catalyst and its preparation method according to the present invention.

[0084] Weigh 40 grams of molybdenum trioxide, 19 grams of basic cobalt carbonate, 15 grams of phosphoric acid, and 20 grams of citric acid into 140 grams of deionized water, heat and stir to dissolve to obtain a clear impregnation solution, and the measured pH is 3.5. Using the saturated impregnation method to impregnate 200 grams of alumina carrier Z1 with the above solution, the impregnation time is 2 hours, then dry at 120°C for 2 hours, and then roast it under the state of feeding air flow, the roasting temperature is 400°C, The time is 2 hours, with respect to every gram of carrier, the air feeding rate is 2 liters / hour, obtains semi-finished catalyst Z1-S1, and the carbon content of Z1-S1 is shown in Table 1; 5 grams of EDTA are added in 150 grams of deionized water, add Adjust the pH value of the solution to 10.5 with an appropriate amoun...

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Abstract

The invention discloses a preparing method for a distillate oil hydrofining catalyst and the catalyst prepared by the method and an application therefor. The method includes the following steps: (1) acarrier is dipped by utilizing a first dipping liquid, a semi-finished product catalyst is obtained after drying and roasting, the roasting condition makes the carbon content of semi-finished productcatalyst 0.03-0.5 weight% based on the total amount of the semi-finished product catalyst; (2) the semi-finished product catalyst prepared in the step (1) is dipped by utilizing a second dipping liquid, the semi-finished product catalyst is dried and not roasted; the first dipping liquid is an acidic aqueous solution containing a water-soluble salt of hydrogenation active metal components and anorganic complexing agent, the second dipping liquid is an alkaline aqueous solution containing the organic complexing agent. Compared with the prior art, the catalyst prepared by the method has higheractivity and is especially suitable for the hydrorefining of the distillate oil. The roasting condition makes the carbon content of semi-finished product catalyst 0.0.-0.5 weight% based on the totalamount of the semi-finished product catalyst

Description

technical field [0001] The present invention relates to a hydrorefining catalyst and its preparation method and the application of the catalyst in the field of hydrorefining, more specifically, to a distillate oil hydrorefining catalyst and its preparation method and the use of the catalyst in the hydrogenation of fractions Applications. 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. The color stability of aviation kerosene is an important index to measure the cleanliness of aviation kerosene. Studies have shown that nitrogen heteroelements in aviation kerosene have an important impact on the color stability of aviation kerosene. It is generally required to remove the nitrogen content in aviation kerosene raw materials to less than 3μg / g can make jet fuel products have long-term storage color st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J27/188B01J35/10B01J37/02C10G45/08
CPCC10G45/08B01J27/188B01J27/19B01J37/0205C10G2300/202C10G2300/1051B01J35/615B01J35/635B01J35/633
Inventor 刘锋张乐夏国富褚阳李会峰李明丰习远兵
Owner CHINA PETROLEUM & CHEM CORP
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