Hydrotreating catalyst carrier and preparation thereof

A catalyst carrier and hydrotreating technology, which is applied to catalyst carriers, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of no increase in carrier strength, short catalyst life cycle, harsh catalytic reaction conditions, etc. The effect of improving mechanical strength and wear resistance, reducing production cost and increasing pore volume

Active Publication Date: 2009-03-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • 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 cannot be guaranteed; the pressure drop of the catalyst bed is high; in order to meet the product index, the fixed bed reactor system needs to adopt a more complicated design, which increases the investment cost
Since the carrier has a large pore structure and no method to increase the strength of the carrier has been proposed, the strength and wear resistance of the carrier still need to be further improved

Method used

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  • Hydrotreating catalyst carrier and preparation thereof
  • Hydrotreating catalyst carrier and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of modified alumina M-1

[0044] A. Set the concentration to contain 160gAl 2 o 3 / L NaAlO 2 Solution (caustic ratio 1.25-1.5) and concentration 40gAl 2 o 3 / L Al 2 (SO 4 ) 3 The solution was poured into the gel forming device equipped with 1L of bottom water under the condition of stirring, and the temperature was controlled at 60°C and the pH value was 8.5.

[0045] B. After the gelation is completed, age for 0.5-1 hour under stirring conditions.

[0046] C. After aging, the feed liquid is filtered, beaten and washed four times with water, and the ratio of water to filter cake is 30:1.

[0047] D, get 30g magnesium nitrate (Mg(NO 3 ) 2 6H 2 O) add distilled water to dissolve, dilute to 250ml with volumetric flask, be made into magnesium nitrate aqueous solution; Add magnesium nitrate aqueous solution prepared in step C gained slurry and carry out beating, stir for 0.8 hour, filter and dry to obtain magnesium nitrate of the present invention The...

Embodiment 2

[0049] Preparation of modified alumina M-2

[0050] A. Set the concentration to contain 160g Al 2 o 3 / L NaAlO 2 Solution (caustic molar ratio 1.25-1.5) and concentration 40g Al 2 o 3 / L Al 2 (SO 4 ) 3 The solution was poured into the gel forming device equipped with 1L of bottom water under the condition of stirring, and the temperature was controlled at 60°C and the pH value was 8.5.

[0051] B. After the gelation is completed, age for 0.5-1 hour under stirring conditions.

[0052] C. After aging, the feed liquid is filtered, beaten and washed four times with water, and the ratio of water to filter cake is 30:1.

[0053] D, get 84g magnesium chloride MgCl 2 Add distilled water to dissolve, dilute to 250ml with a volumetric flask, and make a 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 alumina of the present...

Embodiment 3

[0057] Preparation of the hydrotreating catalyst carrier D-1 of the present invention.

[0058] With 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 Industry Co., Ltd.) and 217 grams of SB powder (pore volume 0.454ml / g, specific surface area 258m2 / g) Add the binding agent (30wt% on a dry basis, the acid-aluminum mol ratio of 0.3) of peptizing acid preparation and 48g aluminum dihydrogen phosphate (colorless transparent liquid) and put into the roller compactor, grind to extrudable paste, extrude Dried at 110°C for 4 hours and calcined at 550°C for 3 hours to obtain catalyst carrier D-1, whose physical and chemical properties are listed in Table 2.

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Abstract

The invention discloses a hydrotreatment catalyst carrier and a preparation method thereof. The carrier 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 carrier, improving the stability of the catalyst, prolonging the service life of the catalyst and reducing the product cost. When the catalyst is used as the carrier of a boiling bed hydrotreatment catalyst for treating heavy fractions, 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.

Description

technical field [0001] The invention relates to a hydrogenation treatment catalyst carrier and a preparation method thereof, in particular to a fluidized bed hydrogenation treatment catalyst carrier suitable for heavy distillate oil hydrogenation 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 es...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/04C10G45/18B01J32/00
Inventor 刘雪玲王刚王继锋彭绍忠魏登凌温德荣
Owner CHINA PETROLEUM & CHEM CORP
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