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A kind of preparation method of spherical alumina carrier

A spherical alumina and carrier technology, which is applied to catalyst carriers, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of small pore size of alumina carriers, not suitable for heavy residue hydrogenation reaction, etc., to improve the activity Stability, not easy to be blocked, the effect of large pores

Active Publication Date: 2022-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The alumina carrier prepared by this method has a small pore size and is not suitable for the hydrogenation reaction of heavy residue oil

Method used

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  • A kind of preparation method of spherical alumina carrier
  • A kind of preparation method of spherical alumina carrier
  • A kind of preparation method of spherical alumina carrier

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] Material W 2 Preparation of:

[0034] (1) Material W 2-1 preparation of

[0035]Put 200 grams of kaolin in a high-temperature muffle furnace and activate it at 800° C. for 4 hours. Weigh 100 grams of the above-mentioned activated kaolin and 300 grams of ammonium bicarbonate, add 1600 grams of distilled water to the above materials and stir for 20 minutes, transfer the mixed materials into an autoclave and seal and heat up to 80 degrees Celsius at a speed of 10 degrees Celsius / min Keep the temperature constant for 3 hours, then raise the temperature to 130°C at a rate of 5°C / min for 6 hours, then dry the material at 110°C for 6 hours, and then calcinate at 750°C for 5 hours.

[0036] Weigh 50 grams of the above materials, put them in a beaker, add 350 grams of sodium hydroxide solution with a mass concentration of 13.5% into the beaker, place the beaker in an ultrasonic container for ultrasonic treatment, the treatment temperature is 75 ° C, and the treatment time is ...

Embodiment 1

[0042] (1) Mix 6 grams of starch and 200 grams of pseudoboehmite evenly to obtain material W 1 .

[0043] (2) Add 100g of material W 1 Put it in the turntable molding machine and mix well, adjust the inclination angle of the turntable to 40º, and the rotation speed of the turntable to 10rpm; spray the acetic acid aqueous solution with a mass concentration of 2% on the alumina molding material W in the turntable through the sprayer -1 After mixing and contacting, the molding time of the material in the turntable is 30 minutes to obtain a spherical precursor I with a diameter of 1.0-1.5 mm;

[0044] (3) Add 100g of material W 2-1 Put the spherical precursor I prepared in step (2) into the turntable molding machine to fully mix, adjust the inclination angle of the turntable to 40º, and the rotation speed of the turntable to 10rpm, and spray the acetic acid aqueous solution with a mass concentration of 2% to the material in the turntable through the sprayer After mixing and con...

Embodiment 2

[0046] With embodiment 1, just material W 1 The addition amount of medium starch is 8 grams, and material W 2-1 Change to material W 2-3 , the spherical alumina support S-2 was obtained, and the properties of the support are shown in Table 1.

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Abstract

The invention discloses a method for preparing a spherical alumina carrier, which includes the following contents: (1) mixing pseudo-boehmite with a physical pore-enlarging agent to obtain a material W 1 (2) Mix the activated kaolin, ammonium bicarbonate and water, seal heat treatment, after heat treatment, the material is dried, roasted, and desiliconized to obtain the material W 2 ; (3) the material W 1 After ball forming, the spherical precursor I was obtained; (4) the material W 2 Mix with the spherical precursor I, perform rolling ball molding, then dry and calcinate to obtain a spherical alumina carrier. The alumina support prepared by the method of the invention has a pore structure from the surface to the inside, and is very suitable as a support for the hydrogenation catalyst of inferior heavy oil.

Description

technical field [0001] The invention belongs to the field of catalyst material preparation, and in particular relates to a preparation method of a spherical alumina carrier. Background technique [0002] Crude oil and distillates derived from crude oil contain impurities such as sulfur, nitrogen, oxygen and metals. The existence of these impurities not only affects the stability of the oil, but also emits SO during use. X , NO X and other harmful gases pollute the environment. During the secondary processing of oil products, the presence of impurities such as sulfur, nitrogen, oxygen and metals can poison catalysts. Therefore, removing the above-mentioned impurities is an important process in oil processing. Distillate oil hydrotreating refers to the process of contacting raw oil and hydrogen with a catalyst at a certain temperature and pressure to remove impurities and saturate aromatics. [0003] At present, industrial hydrotreating catalysts are usually supported by ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J21/04B01J35/08B01J35/10B01J37/08
CPCB01J21/04B01J37/0018B01J37/088B01J35/51B01J35/635B01J35/647B01J35/651B01J35/615
Inventor 季洪海凌凤香王少军张会成沈智奇
Owner CHINA PETROLEUM & CHEM CORP
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