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Modified kaolin

A kaolin, modified technology, applied in inorganic chemistry, catalyst carrier, non-metallic elements, etc., can solve the problems of difficult filtration, difficult to large-scale industrial production, etc., to achieve the effect of improving performance and strong resistance to heavy metals

Inactive Publication Date: 2017-06-06
高州市兆翔新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Improving the heavy oil conversion ability of the catalyst by increasing the activity of the matrix has become a research direction. However, in related technologies, the acid-modified kaolin is filtered and washed before use. Because the particles of kaolin are very small, it is difficult to filter. Difficult to carry out large-scale industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1 A kind of modified kaolin is prepared by the following steps:

[0020] S1, mixed material: kaolin with crystalline kaolinite content ≥ 95% is roasted at 800-1200°C for 5-8 hours, and then cooled to obtain roasted kaolin. The roasted kaolin, aluminum source (metal aluminum powder), and zinc source are added (Metal zinc powder) and acid (mixed acid with a concentration of 3M) were added to the container, and stirred evenly to obtain a mixed material with a solid content of 15%; the mixed material was treated with ultrasonic oscillation at a frequency of 30-40kHz for 25 minutes;

[0021] Wherein, the consumption of acid is that the surface of the calcined kaolin, the added aluminum source, and the added zinc source are covered; the mixed acid is prepared by perchloric acid and sulfuric acid according to a volume ratio of 1.5:3;

[0022] S2, filtering the mixed material prepared in step S1, washing the product with deionized water to obtain a mixed slurry;

[...

Embodiment 2

[0024] Embodiment 2 A modified kaolin is prepared by the following steps:

[0025] S1, mixed material: kaolin with crystalline kaolinite content ≥ 95% is roasted at 800-1200°C for 5-8 hours, and then cooled to obtain roasted kaolin. The roasted kaolin, aluminum source (metal aluminum powder), and zinc source are added (Metal zinc powder) and acid (mixed acid with a concentration of 1M) were added to the container, and stirred evenly to obtain a mixed material with a solid content of 10%; the mixed material was treated with ultrasonic oscillation at a frequency of 30-40kHz for 20 minutes;

[0026] Wherein, the dosage of the acid is to cover the surface of the calcined kaolin, the added aluminum source, and the added zinc source; the mixed acid is prepared by nitric acid and sulfuric acid according to a volume ratio of 1:3;

[0027] S2, filtering the mixed material prepared in step S1, washing the product with deionized water to obtain a mixed slurry;

[0028] S3, putting the m...

Embodiment 3

[0029] Embodiment 3 A kind of modified kaolin is prepared by the following steps:

[0030] S1, mixed material: kaolin with crystalline kaolinite content ≥ 95% is roasted at 800-1200°C for 5-8 hours, and then cooled to obtain roasted kaolin. The roasted kaolin, aluminum source (metal aluminum powder), and zinc source are added (Metal zinc powder) and acid (mixed acid with a concentration of 5M) were added to the container, and stirred evenly to obtain a mixed material with a solid content of 20%; the mixed material was treated with ultrasonic oscillation at a frequency of 30-40kHz for 30 minutes;

[0031] Wherein, the amount of acid is to cover the surface of the roasted kaolin, the added aluminum source, and the added zinc source; the mixed acid is prepared by hydrochloric acid and sulfuric acid at a volume ratio of 1:3;

[0032] S2, filtering the mixed material prepared in step S1, washing the product with deionized water to obtain a mixed slurry;

[0033] S3, putting the mi...

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PUM

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Abstract

The invention discloses modified kaolin. A preparation method of the modified kaolin comprises the following steps: (S1) mixing materials: roasting kaolin at a high temperature and cooling to obtain roasted kaolin; adding the roasted kaolin, additional aluminum source, additional zinc source and acid into a container, and stirring uniformly to obtain a mixture; and performing ultrasonic oscillating treatment on the mixture for 20-30min at a frequency of 30-40kHz; (S2) filtering the mixture prepared in step (S1), and washing the product with deionized water to obtain a mixture slurry; and (S3) performing a high-temperature heating reaction on the mixture slurry obtained in step (S2) in a closed container, wherein the heating temperature is 120-165 DEG C, and the constant-temperature reaction lasts for 1-2 hours. The preparation method of modified kaolin disclosed by the invention is performed in a closed condition, thus the reaction of the aluminum source, zinc source and acid in the substances such as kaolin is more complete, the consumption of inorganic acid is minimized, and other properties are correspondingly improved.

Description

technical field [0001] The invention relates to the technical field of kaolin, in particular to a modified kaolin. Background technique [0002] With the growth of the world economy, the demand for energy is increasing. Petroleum, which is one of the most important energy sources in the world today, will be further developed, so the oil refining industry will still maintain its dominant position in energy utilization in the 21st century. [0003] In my country, catalytic cracking is currently responsible for the production of 75% of gasoline, 35% of diesel and propylene in my country, so catalytic cracking is also known as the heart of refineries in China. Therefore, catalytic cracking technology has naturally become the leading technology for secondary processing of petroleum, and its core technology is catalyst. [0004] Improving the heavy oil conversion ability of the catalyst by increasing the activity of the matrix has become a research direction. However, in related...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/40B01J35/10B01J32/00
CPCC01B33/40B01J21/16B01J35/63
Inventor 莫崇兆
Owner 高州市兆翔新材料有限公司
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