Bubbling bed hydrotreating catalyst and preparation thereof

A hydrotreating and catalyst technology, which is applied in the refining of hydrocarbon oil, petroleum industry, and refining to remove heteroatoms, etc., can solve the problems of no increase in catalyst strength, inability to guarantee product properties, and catalyst bed pressure drop, etc., and achieve good Hydrogenation activity and stability, improving mechanical strength and wear resistance, reducing olefin and aromatic content

Active Publication Date: 2009-03-04
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are the following problems in the hydrotreating of heavy distillate oil using the fixed bed process: because the heavy distillate oil is heavy and contains more mechanical impurities, the catalytic reaction conditions will be relatively harsh; high-nitrogen feedstock will accelerate catalyst deactivation, and the use of catalyst The cycle is very short, and the product properties c

Method used

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  • Bubbling bed hydrotreating catalyst and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0046] Example 1

[0047] Preparation of modified alumina M-1

[0048] A. Set the concentration to contain 160gAl 2 O 3 / L of NaAlO 2 Solution (caustic ratio 1.25-1.5) and concentration 40gAl 2 O 3 / L of Al 2 (SO 4 ) 3 The solution was co-currently added to the gel forming device with 1L of bottom water under stirring conditions, and the temperature was controlled at 60°C and the pH value was 8.5.

[0049] B. After the gelation is finished, age for 0.5-1 hour under stirring conditions.

[0050] C. After aging, the material liquid is filtered, beating, and washed four times with water, and the ratio of water to filter cake is 30:1.

[0051] D. Take 30g of magnesium nitrate (Mg(NO 3 ) 2 6H 2 O) Dissolve with distilled water, dilute to 250ml with a volumetric flask, and prepare a magnesium-containing aqueous solution; add the prepared magnesium nitrate aqueous solution to the slurry obtained in step C for beating, stir for 0.8 hours, filter and dry to obtain the magnesium-containing ...

Example Embodiment

[0052] Example 2

[0053] Preparation of modified alumina M-2

[0054] A. Set the concentration to contain 160g Al 2 O 3 / L of NaAlO 2 Solution (caustic molar ratio 1.25-1.5) and concentration of 40g Al 2 O 3 / L of Al 2 (SO 4 ) 3 The solution was co-currently added to the gel forming device with 1L of bottom water under stirring conditions, and the temperature was controlled at 60°C and the pH value was 8.5.

[0055] B. After the gelation is finished, age for 0.5-1 hour under stirring conditions.

[0056] C. After aging, the material liquid is filtered, beating, and washed four times with water, and the ratio of water to filter cake is 30:1.

[0057] D. Take 84g of magnesium chloride MgCl 2 Dissolve in distilled water, dilute to 250ml with a volumetric flask, and prepare magnesium-containing aqueous solution; add the prepared magnesium nitrate aqueous solution to the slurry obtained in step C for beating, stir for 0.5 hours, filter and dry to obtain the magnesium-containing alumin...

Example Embodiment

[0060] Example 3

[0061] The preparation of the fluidized bed hydrogenation catalyst C-1 for stable hydrogenation of heavy oils of the present invention.

[0062] Combine 203.6 grams of M-1, 21 grams of alumina fiber powder (length 30 microns, diameter 6 microns, specific surface 183m 2 / g, pore volume 0.08ml / g), 22.6 grams of nano-silica (purified nano-silica produced by Tianjin Chemical Co., Ltd.) and 217 grams of SB powder (pore volume 0.454ml / g, specific surface area 258m 2 / g) Adhesive prepared by adding peptizing acid (30wt% on dry basis, molar ratio of acid aluminum is 0.3), and 48g aluminum dihydrogen phosphate (colorless and transparent liquid) are placed in a roller compactor and crushed until the paste can be squeezed Paste, extruded, dried at 110°C for 4 hours, and calcined at 550°C for 3 hours; impregnated with the Mo-Ni-P aqueous solution S-1 prepared above, filtered off the solution, dried at 110°C for 4 hours, and calcined at 500°C for 3 hours. The catalyst C-1 wa...

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Abstract

The invention discloses a boiling bed hydrotreatment catalyst and a preparation method thereof. The catalyst adopts an alumina carrier which contains alumina fibers and an accessory ingredient of phosphorus; wherein, the accessory ingredient of phosphorus is partially or completely led in the form of aluminum dihydrogen phosphate. During the preparation process, the alumina fibers and the aluminum dihydrogen phosphate are added in the catalyst, thus being capable of improving the mechanical intensity and the wear resistance of the catalyst, improving the stability of the catalyst, prolonging the service life of the catalyst and reducing the product cost. When the catalyst is used for the heavy oil products of boiling bed hydrotreatment, the impure atoms like nitrogen, sulfur in the oil products can be removed to the largest extent, the contents of olefin and aromatic hydrocarbon can be reduced and the product stability can be improved.

Description

technical field [0001] The invention relates to a fluidized bed hydrogenation treatment catalyst and a preparation method thereof, in particular to a fluidized bed hydrogenation treatment catalyst suitable for hydrogenation of heavy distillate oil and a preparation method thereof. Background technique [0002] Since the sulfur and nitrogen content in heavy distillate oil is generally above 0.5wt%, and it also contains a certain amount of oxygen and more mechanical impurities, if it is not pretreated in time, it is very easy to generate substances that are not conducive to subsequent transportation and processing, so it is necessary to The heavy distillate oil is pretreated by hydrogenation to remove nitrogen, sulfur, oxygen and other heteroatoms to the greatest extent, and improve the stability of the heavy distillate oil. [0003] The process usually used for catalytic hydrogenation of heavy distillate oil is mainly fixed bed hydrogenation process. Fixed bed reactors are e...

Claims

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Application Information

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IPC IPC(8): C10G45/04C10G45/20
Inventor 刘雪玲王刚王继锋彭绍忠杨占林佟明海
Owner CHINA PETROLEUM & CHEM CORP
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