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Kaolin for preparing heavy oil catalytic cracking catalyst and preparation method thereof

A technology for cracking catalysts and heavy oil catalysis, which is applied in the fields of physical/chemical process catalysts, chemical instruments and methods, and inorganic chemistry. It can solve the problems of small number of active centers, small specific surface area and pores of kaolin, and limited ability to crack petroleum molecules. Achieve the effects of small radius, accelerated corrosion, and improved production efficiency

Active Publication Date: 2020-09-11
漳州阳盛工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the specific surface area and pores of kaolin produced by the above scheme are small, resulting in a small number of active centers, which limits its ability to crack petroleum molecules

Method used

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  • Kaolin for preparing heavy oil catalytic cracking catalyst and preparation method thereof
  • Kaolin for preparing heavy oil catalytic cracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: a kind of preparation method for preparing heavy oil catalytic cracking catalyst kaolin, comprises the steps:

[0045] S1. Excavate the loosened kaolin mineral material, and obtain the kaolin base material after preliminary separation of clay and sundries. The kaolin base material is desanded and pulped through a sediment separator to obtain the primary material of kaolin slurry;

[0046] S2. Add 100 parts of kaolin slurry primary material, 0.5 part of a mixed solution of sodium hexametaphosphate solution and sodium silicate sequentially into the slurry storage tank, stir evenly, then add magnesium chloride, and adjust the pH value of the slurry to 6. Among them, hexametaphosphate The ratio of parts by weight of sodium phosphate solution to sodium silicate is 1:2.5;

[0047] S3. When the rotation speed in the slurry storage tank is 100r / min, add 0.65 parts of sodium dithionite to the slurry storage tank, and after reacting for 40 minutes, add 1.2 parts of ...

Embodiment 2

[0050] Embodiment 2: a kind of preparation method for preparing heavy oil catalytic cracking catalyst kaolin, comprises the steps:

[0051] S1. Excavate the loosened kaolin mineral material, and obtain the kaolin base material after preliminary separation of clay and sundries. The kaolin base material is desanded and pulped through a sediment separator to obtain the primary material of kaolin slurry;

[0052]S2. Add 110 parts of kaolin slurry primary material, 0.65 parts of sodium hexametaphosphate solution and sodium silicate mixed solution in turn to the slurry storage tank, stir evenly, then add magnesium chloride, adjust the pH value of the slurry to 6, wherein, hexametaphosphate The ratio of parts by weight of sodium phosphate solution to sodium silicate is 1:3.3;

[0053] S3. When the rotation speed in the slurry storage tank is 100r / min, add 0.8 parts of sodium dithionite to the slurry storage tank, and after reacting for 40 minutes, add 1.3 parts of sulfuric acid to th...

Embodiment 3

[0056] Embodiment 3: a kind of preparation method for preparing heavy oil catalytic cracking catalyst kaolin, comprises the steps:

[0057] S1. Excavate the loosened kaolin mineral material, and obtain the kaolin base material after preliminary separation of clay and sundries. The kaolin base material is desanded and pulped through a sediment separator to obtain the primary material of kaolin slurry;

[0058] S2. Add 120 parts of kaolin slurry primary material, 0.8 part of sodium hexametaphosphate solution and sodium silicate mixed solution in turn to the slurry storage tank, stir evenly, then add magnesium chloride, adjust the pH value of the slurry to 7, wherein, hexametaphosphate The ratio of parts by weight of sodium phosphate solution to sodium silicate is 1:4;

[0059] S3. When the rotation speed in the slurry storage tank is 100r / min, add 0.9 parts of sodium dithionite to the slurry storage tank, and after reacting for 40 minutes, add 1.5 parts of sulfuric acid to the s...

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Abstract

The invention discloses kaolin for preparing a heavy oil catalytic cracking catalyst and a preparation method thereof, and belongs to the technical field of kaolin preparation. The method is characterized by comprising the following steps that S1, excavating loosened kaolin mineral aggregate, initially separating clay and impurities to prepare a kaolin base material, removing the sand in the kaolin base material, and pulping the kaolin base material to obtain a kaolin ore pulp primary material; S2, adding 0.5-0.8 part of a dispersing agent into 100-120 parts of the kaolin ore pulp primary material, and then adjusting the pH value of the slurry to 6-7; S3, adding 0.65-0.9 part of sodium hydrosulfite into the slurry storage tank, reacting for 25-40 minutes, adding 1.2-1.5 parts of inorganicacid into the slurry storage tank, and uniformly stirring the mixture, so as to obtain a kaolin ore pulp concentrate; S4, feeding the kaolin ore pulp concentrate into a stripping machine for stripping, and performing filter pressing dehydration to obtain a filter cake; and S5, drying the filter cake, and crushing the filter cake to obtain the finished product. The preparation method has the advantages of improving the specific surface area and pore size of kaolin.

Description

technical field [0001] The invention belongs to the technical field of kaolin preparation, and more specifically relates to a kaolin used as a catalyst for catalytic cracking of heavy oil and a preparation method thereof. Background technique [0002] Kaolin is one of the raw materials used in the petrochemical industry to prepare catalysts for catalytic cracking of heavy oil. Kaolin is a kind of clay and clay rock mainly composed of kaolinite clay minerals. Its mineral composition is mainly composed of kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar and other minerals. Pure kaolin is white and delicate, soft and soft, and has good physical and chemical properties such as plasticity and fire resistance. [0003] A Chinese invention patent with the notification number CN101798096B discloses a kaolin preparation method, including: mining and removing impurities, mining kaolin mineral materials, and initially separating clay and impurities to obtain...

Claims

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Application Information

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IPC IPC(8): C01B33/40B01J21/16
CPCC01B33/40B01J21/16C01P2006/12C01P2006/17
Inventor 杨龙和
Owner 漳州阳盛工贸有限公司
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