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A kind of preparation method of silicon-containing alumina carrier

A silicon-alumina and alumina technology, which is applied in the field of preparation of silicon-containing alumina carrier, can solve the problems of low sodium content, a large amount of waste water, environmental pollution, etc., and achieve the effects of increasing cracking performance, increasing acidity, and simplifying the modification process

Active Publication Date: 2016-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since sodium silicate is selected as the silicon source, it is necessary to ensure that the product has a low sodium content, and a large amount of waste water will be generated during the washing process, which will pollute the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Roast the original kaolin soil in a high-temperature furnace at a temperature of 900°C and keep the temperature for 5 hours. After cooling, weigh 500g, add 500g of pseudo-boehmite dry glue (containing 71wt% of alumina), add 10.5g of safflower powder and 10.5 g carbon black, after mixing evenly, add 400mL of weakly alkaline solution dissolving 50g of ammonium carbonate, then add 500mL of nitric acid solution with a concentration of 1.65mol / L. Health treatment for 12h.

[0020] The cured materials were pelletized, dried at 120°C for 2 hours, and calcined at 750°C for 3 hours to obtain carrier A.

Embodiment 2

[0022] Roast the original kaolin soil in a high-temperature furnace at a temperature of 900°C and keep the temperature for 12 hours. After cooling, weigh 200g, add 800g of pseudoboehmite dry glue (containing 71wt% of alumina), add 25.4g of selenium powder and 17.28 g carbon black, after mixing evenly, add 400mL of weakly alkaline solution dissolving 50g of ammonium carbonate, then add 300mL of nitric acid solution with a concentration of 3.30mol / L, and put the mixed material in humid air at 60°C (relative humidity is 50%) Health treatment for 8h.

[0023] The cured materials were pelletized, dried at 120°C for 4 hours, and calcined at 650°C for 3 hours to obtain carrier B.

Embodiment 3

[0025] The method is the same as in Example 1, except that the added kaolin is replaced by montmorillonite, dried at 120°C for 3 hours, and calcined at 800°C for 3 hours to obtain carrier C.

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PUM

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Abstract

The invention discloses a preparation method of a silicon-containing alumina carrier. The preparation method comprises the following steps: mixing clay, which has been calcinated at a high temperature, with alumina or a precursor of alumina, orderly adding a weak alkali solution and a strong acid solution, carrying out a life-cultivating treatment in damp air, and then subjecting the life-cultivated material to processes of forming, drying, and burning so as to obtain the silicon-containing alumina carrier. In the preparation method, the weak alkali solution is added before the addition of the strong acid solution, and then a life-cultivating treatment is carried out so as to adjust the physical and chemical properties of the catalyst carrier, and finally a hydro-treatment catalyst, which has the advantages of reasonable pore structure and proper acidity, is obtained. The silicon-containing alumina carrier provided by the invention is especially suitable for being used as a carrier of a catalyst for heavy oil or residual oil hydro-treatment.

Description

technical field [0001] The invention relates to a preparation method of a silicon-containing alumina carrier, which is especially suitable for the preparation method of the hydrodemetallization, desulfurization and conversion catalyst carrier of heavy raw oil. Background technique [0002] In recent years, with the intensification of heavy and inferior crude oil, the difficulty of crude oil processing has increased, and the yield of light oil has decreased. However, the market demand for high-quality oil products has continued to increase, and environmental protection regulations have become more and more stringent. , the oil refining industry is facing more severe challenges, and the processing and full utilization of heavy oil and residual oil has become a topic of concern to the global oil refining industry. Heavy oil and residual oil hydroprocessing technology is a deep processing technology, the development of this technology is an effective way to solve the above probl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J21/12C10G45/04
Inventor 孙素华朱慧红刘杰金浩杨光
Owner CHINA PETROLEUM & CHEM CORP
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