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A kind of preparation method of silicon-containing alumina dry glue

A technology of silica-alumina and dry glue, which is applied in the direction of chemical instruments and methods, catalyst carriers, chemical/physical processes, etc., can solve the problems of large proportion and unsuitable hydrogenation catalyst materials, and achieve acidity and acid distribution. Cost reduction Low, the effect of improving cracking performance

Active Publication Date: 2016-01-20
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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  • A kind of preparation method of silicon-containing alumina dry glue

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Mix 200g of kaolin original soil with 2.0mol / L acetic acid 50mL and 50mL water-dissolved 20g polyethylene glycol solution, and perform modification treatment on the hydrothermal treatment device. The hydrothermal treatment temperature is 600℃, the treatment is 4h, and the hydrothermal treatment pressure is 0.25MPa. .

[0034] The concentration of sodium metaaluminate solution is 45gAl 2 O 3 / L total 1.6L, the concentration of aluminum sulfate solution is 20gAl 2 O 3 / L total 0.7L, ready to use.

[0035] Weigh 30g of modified kaolin, add 1L of distilled water to the gelatinization tank, the solid content in the slurry is 3wt%, and heat to 70°C. Add the prepared sodium metaaluminate solution to the modified kaolin slurry, adjust the pH to 9.0, after stabilizing for 5 minutes, add aluminum sulfate solution to adjust the pH to 3.0, after stabilizing for 5 minutes; swing like this 3 times, add sodium metaaluminate For the solution, adjust the pH of the slurry to 8.5, and then ad...

Embodiment 2

[0037] The other conditions were the same as in Example 1, except that the amount of modified kaolin was weighed and increased to 100g, the solid content in the slurry was 10wt%, and the organic pore expander alkylphenol and ethylene oxide condensate (OP- 10) 63mL (content 92g / L, calculated at 5wt% of silicon-containing alumina content) to prepare silicon-containing alumina B.

Embodiment 3

[0039] Other conditions are the same as in Example 1, except that the kaolin is replaced with halloysite, the hydrothermal treatment temperature is changed to 700° C., and the treatment time is 3 hours, to prepare silicon-containing alumina C.

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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: mixing original clay with a weak acid and a dispersant, then carrying out a hydrothermal treatment on the mixture so as to obtain modified clay; using an acidic solution containing aluminum and an alkaline solution containing aluminum to carry out a glue-forming reaction in the modified clay slurry by adopting a combined method of a pH swing method and a parallel-flow method, and after the glue-forming process, subjecting the glue-forming reaction product to processes of filtering, washing, and drying so as to obtain the alumina dry glue containing silicon. The alumina dry glue containing silicon has the advantages of uniform particle size, concentrated pore distribution, and proper acidity, and is especially suitable for being used to prepare a heavy oil or residual oil hydro-treatment catalyst.

Description

Technical field [0001] The invention relates to a preparation method of silica-containing alumina dry glue, in particular to a preparation method of silica-containing alumina dry glue suitable for the catalyst carrier material for the hydrogenation treatment of heavy oil or residual oil. Background technique [0002] With the increasing requirements for deep processing of raw materials worldwide, the main energy structure is gradually developing towards macromolecules and high carbon. In order to effectively solve the problems of excessive diffusion resistance of heavy oil components in the catalyst pores, heavy metal impurity deposition and coking caused by catalyst activity decline or deactivation, it is urgently required to be widely used in petrochemical industries with large pore volume and high specific surface area. Carrier. [0003] In the preparation process of the catalyst used in petroleum refining, alumina or a small amount of one or more other elements such as Si, P, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J32/00B01J21/14C10G45/04C10G49/02
Inventor 刘铁斌朱慧红孙素华刘杰金浩杨光
Owner CHINA PETROLEUM & CHEM CORP
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