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Cracking catalyst using silicon adhesive and its use

A cracking catalyst and binder technology, which is applied in hydrocarbon catalytic cracking catalysts and its application fields, can solve the problems of small pore volume, high bulk density, and low surface area, and achieve enhanced cracking, high molecular sieve dosage, and high cracking activity. Effect

Active Publication Date: 2007-08-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wear index of the silica sol binder catalyst prepared by this method is greatly improved, but there are also unfavorable factors such as large bulk density, low surface area, and small pore volume.
[0008] In summary, the semi-synthetic catalytic cracking catalyst prepared by using sodium-containing silica sol as a binder has good anti-wear strength, and the preparation process is simple, and the price of sodium-containing silica sol is also lower than that of boehmite and alumina sol Inexpensive, but there are unfavorable factors such as high bulk density, low surface area, and small pore volume

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Take 2.1L of hydrochloric acid (produced by Beijing Chemical Factory, chemically pure, concentration 36-38% by weight), add 10.0Kg of decationized water to dilute. Get 9.6Kg sodium water glass (commercially available, containing SiO 2 Concentration 26.0% by weight, modulus is 3.2), add 11.6Kg decationized water to dilute, slowly add the diluted sodium water glass in the above dilute hydrochloric acid solution under stirring, obtain SiO 2 Silica sol with a concentration of 7.5% by weight and a pH value of 2.3.

[0032] Add 5.4Kg halloysite (produced by Suzhou Kaolin Company, solid content: 74.0% by weight) to the above-mentioned silica sol, and stir for 1 hour to fully disperse the kaolin.

[0033] Add 3.8 Kg DASY molecular sieves (produced by Qilu Catalyst Factory, solid content is 92.0% by weight) to 6.8 Kg decationized water, after fully dispersed by homogenizer, adjust the pH value to 3.5 with dilute hydrochloric acid. The molecular sieve slurry was added to the ab...

Embodiment 2

[0048] Take 0.63L of sulfuric acid (produced by Beijing Chemical Factory, chemically pure, concentration 95-98% by weight), add 8.0Kg of decationized water to dilute, and cool. Get 7.7Kg sodium water glass (commercially available, containing SiO 2 Concentration 26.0% by weight, modulus is 3.2), add 8.0Kg decationized water to dilute, slowly add the diluted sodium water glass in the above dilute sulfuric acid solution under stirring to obtain SiO 2 Silica sol with a concentration of 8.2% by weight and a pH value of 2.5.

[0049] Add 5.1 Kg of halloysite (produced by Suzhou Kaolin Company, solid content: 74.0% by weight) to the above silica sol, and stir for 1 hour to fully disperse the kaolin.

[0050] In 7.0Kg decationized water, add 2.7KgMOY molecular sieve (production of Qilu Catalyst Factory, solid content is 93.0% by weight, RE 2 o 3 Content 5.6 wt%, P 2 o 5 Content 1.8 weight %), 1.1KgREHY molecular sieve (Qilu Catalyst Factory production, solid content is 95.0 weigh...

Embodiment 3

[0065] Get 0.47L sulfuric acid (produced by Beijing Chemical Plant, chemically pure, concentration 95-98% by weight), add 8.0Kg decationized water to dilute, add 1.3Kg aluminum sulfate solution after cooling (produced by Shandong Aluminum Plant, containing Al 2 o 3 Concentration 7.4% by weight). Get 5.8Kg sodium water glass (commercially available, containing SiO 2 Concentration 26.0% by weight, modulus is 3.2), add 8.0Kg decationized water to dilute, slowly add the diluted sodium water glass in the above-mentioned sulfuric acid-aluminum sulfate dilute solution under stirring, obtain SiO 2 Silica sol with a concentration of 6.4% by weight and a pH value of 2.8.

[0066] Add 6.7Kg halloysite (produced by Suzhou Kaolin Company, solid content: 74.0% by weight) to the above silica sol, and stir for 1 hour to fully disperse the kaolin.

[0067] In 6.8Kg decationized water, add 2.2KgDASY molecular sieve (produced by Qilu Catalyst Factory, solid content is 92.0% by weight), 1.8KgZ...

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Abstract

The present invention features that the cracking catalyst with silicon adhesive consists of molecular sieve 10-60 wt%, clay 0-75 wt%, silicon adhesive accounting in silica 5-40 wt%, and modifying component accounting in oxide 0-10 wt%. The catalyst is prepared through the sol-gel process of maintaining the catalyst in sol state before formation and spray drying at 50-150 deg.c to create microball gel, and subsequent ageing and pore expanding treatment. The catalyst has great pore volume and high cracking activity and is hydrocarbon oil cracking with high cracking selectivity.

Description

technical field [0001] The invention relates to a hydrocarbon catalytic cracking catalyst and its application, more specifically to a semi-synthetic hydrocarbon cracking catalyst with silica sol as a binder and its application. Background technique [0002] In recent years, due to the heavy and inferior quality of raw materials, the content of molecular sieves in catalysts has been increasing continuously. The catalyst carrier with pseudo-boehmite and aluminum sol as a binder can no longer tolerate further increases in the amount of molecular sieves, resulting in catalyst resistance. The abrasiveness is poor. In addition, the prices of pseudo-boehmite and alumina sol are relatively high, resulting in high catalyst costs. Therefore, it is necessary to improve the cohesiveness of the catalyst carrier to ensure that the catalyst has good wear resistance during use. [0003] U.S. Patent No. 3,867,308 discloses a catalyst prepared by a semi-synthetic process using sodium-contain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/00C10G11/05
Inventor 龙军达志坚陈振宇田辉平许明德徐志成张万虹唐立文
Owner CHINA PETROLEUM & CHEM CORP