Preparation method of alumina dry glue containing silicon

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 and concentrated pore distribution , content adjustment simple effect

Active Publication Date: 2014-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The prepared catalyst has a large proportion of small pores <5nm, which is

Method used

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  • Preparation method of alumina dry glue containing silicon

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Effect test

Embodiment 1

[0027] Preparation of sodium metaaluminate solution concentration is 55gAl 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 70°C for use.

[0028] The original kaolin soil was roasted in a high-temperature furnace at a temperature of 800°C and kept at a constant temperature for 4 hours. After cooling, it was pulverized and passed through a 160-mesh sieve before being collected for use.

[0029] Add 1.0L of distilled water into the gel tank and heat to 70°C. Weigh 30 grams of sieved kaolin respectively and put them into sodium metaaluminate solution and aluminum sulfate solution, and flow into the above two slurries to keep the pH value at 9.0, and the solid-liquid ratio in the gelling tank is 50g / L No change, calculate the time for adding water in parallel, and add 1.5L of distilled water in parallel, and keep the temperature at 70°C during the gelling process. After the gelation...

Embodiment 2

[0031] Other conditions are the same as in Example 1, except that the amount of kaolin after roasting is increased to 50g, and silicon-containing alumina B is prepared, wherein SiO 2 The content is 30wt%.

Embodiment 3

[0033] 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 20wt%.

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Abstract

The invention discloses a preparation method of an alumina dry glue containing silicon. The preparation method comprises the following steps: burning clay at a high temperature, then grinding the clay, sieving, adding an alkaline solution containing aluminum and an acidic solution containing aluminum into the clay which has been burned at a high temperature, carrying out a glue-forming treatment by adopting a parallel-flow method under proper conditions, filtering, washing, and drying so as to obtain the alumina dry glue containing silicon. The preparation method can organically combine clay and the generated alumina particles, adjusts the pore structure and acidity of the alumina containing silicon, and can further obtain silicon-containing alumina which has the advantages of uniform particle size and concentrated pore distribution. The alumina dry glue containing silicon is suitable for being used as a carrier component of a catalyst, which is applied to hydrogenation demetalization, hydrogenation desulfurization, or hydrogenation conversion of heavy oil or residual oil.

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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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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