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Method for preparing silicon-containing alumina dry glue

A technology of silica-alumina and dry glue, which is applied to chemical instruments and methods, refined hydrocarbon oil, catalyst carriers, etc., can solve the problems of unsuitable hydrogenation catalyst materials and large proportions, and achieve uniform solid product particles, improved surface area, The effect of concentrated hole distribution

Active Publication Date: 2016-01-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prepared catalyst has a large proportion of small pores <5nm, which is not suitable for heavy oil or residual oil hydrogenation catalyst material

Method used

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  • Method for preparing silicon-containing alumina dry glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Fully mix 200g of kaolin raw soil with 40mL of 3.0mol / L acetic acid, 20mL of 0.5mol / L citric acid and 16g of polyethylene glycol dissolved in 40mL of water, and carry out modification treatment on a hydrothermal treatment device. The hydrothermal treatment temperature is 650°C. 5h, hydrothermal treatment pressure 0.27MPa. The processed kaolin is cooled and pulverized through a 160-mesh sieve and collected for use.

[0026] Preparation of sodium metaaluminate solution concentration is 50gAl 2 o 3 / L, a total of 1L, heated to 70°C for use, the concentration of aluminum sulfate solution is 20gAl 2 o 3 / L for a total of 2L, heated to 75°C for use.

[0027] Add 1.0L of distilled water and 45g of the above-mentioned modified kaolin into the gelling tank, and heat to 75°C. Take by weighing 45g of the above-mentioned modified kaolin and put it in the aluminum sulfate solution, and add aluminum sulfate and sodium metaaluminate solution to keep the pH value at 7.5, and the s...

Embodiment 2

[0029] Other conditions are the same as in Example 1, except that the amount of modified kaolin is increased to 50g, and silicon-containing alumina B is prepared, wherein SiO 2 The content is 50wt%.

Embodiment 3

[0031] Other conditions are the same as in Example 1, except that kaolin is replaced by montmorillonite, and silicon-containing alumina C is prepared, wherein SiO 2 The content is 25wt%.

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Abstract

The invention discloses a method for preparing silicon-containing alumina dry glue. The method comprises: mixing raw clay with weak acid and dispersant, then performing hydrothermal treatment, and then crushing and sieving to obtain modified clay with a particle size larger than 160 mesh; after modifying the clay, crushing and sieving, and partially modifying The clay is added to the acidic solution containing aluminum, part of the modified clay is added to the gel-forming substrate, and then the acidic solution containing aluminum and the alkaline solution containing aluminum are co-flowed to form a gel under suitable conditions, filtered, washed with water, and dried Finally, silicon-containing alumina dry glue is obtained. The method can organically combine the clay and the generated alumina particles, adjust the pore structure of the silicon-containing alumina and the acidity of the silicon-containing alumina, and further obtain silicon-containing alumina with uniform particles and concentrated pore distribution. The silicon-containing alumina dry glue of the present invention is suitable for the carrier component of heavy oil or residual oil hydrodemetallization, hydrodesulfurization or hydroconversion catalyst.

Description

technical field [0001] The invention relates to a preparation method of silicon-containing alumina dry glue, in particular to a preparation method of silicon-containing alumina dry glue suitable for heavy oil or residual oil hydrotreating catalyst carrier materials. Background technique [0002] In the preparation process of catalysts used in petroleum refining, alumina or silica-containing alumina is usually used as a carrier. SiO alone 2 Only weakly acidic, the acidity of alumina is not strong, and the combination of the two shows a strong acidity. Many studies have shown that adding an appropriate amount of silica to alumina can increase the acidity and specific surface area of ​​alumina, which is beneficial to polymerization and hydrogenation reactions. Silicon-containing alumina has unique advantages and has been successfully applied in the development of various hydrogenation catalysts. The preparation methods of silicon-containing alumina mainly include precipitati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/12B01J35/10B01J32/00C10G45/04C10G45/60
Inventor 朱慧红孙素华刘杰刘立军金浩杨光
Owner CHINA PETROLEUM & CHEM CORP
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