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Method for improving strength of catalytic cracking propylene assistant and application

A propylene additive and catalytic cracking technology, which is applied in the direction of catalysts, molecular sieve catalysts, carbon compound catalysts, etc., can solve the problems of incompatibility between wear index and particle size distribution, and achieve good industrial production, catalytic activity, and low cost. Effect

Pending Publication Date: 2021-08-17
湖北赛因斯科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for improving the strength of catalytic cracking propylene additives, so as to solve the defects that molecular sieve content, wear index and particle size distribution cannot be combined in the prior art

Method used

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  • Method for improving strength of catalytic cracking propylene assistant and application
  • Method for improving strength of catalytic cracking propylene assistant and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Take 100 g of the propylene additive prepared in Comparative Example 1, add 100 g of purified water, add 7.15 g of the prepared aluminum phosphate solution under stirring, stir for 30 min, and filter to obtain a filter cake with a solid content of 50%, P 2 o 5 The load is 2%, calcined at 600°C for 2 hours, washed with water 5 times as much as the additive, filtered the filter cake, and dried at 110°C to obtain the modified propylene additive.

Embodiment 2

[0043] Take 100 g of the propylene additive prepared in Comparative Example 2, add 100 g of purified water, add 20 g of the prepared aluminum phosphate solution under stirring, stir for 30 min, and filter to obtain a filter cake with a solid content of 50%, P 2 o 5 The load is 5%, calcined at 750°C for 1 hour, washed with water 5 times as much as the additive, filtered the filter cake, and dried at 120°C to obtain the modified propylene additive.

Embodiment 3

[0045] Take 100 g of the propylene additive prepared in Comparative Example 3, add 100 g of purified water, add 36.37 g of the aluminum phosphate solution prepared in Preparation Example 1 under stirring, stir for 30 min, and filter to obtain a filter cake with a solid content of 50%, P 2 o 5 The load is 8%, calcined at 550°C for 4 hours, washed with water 5 times as much as the additive, filtered the filter cake, and dried at 115°C to obtain the modified propylene additive.

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Abstract

The invention discloses a method for improving the strength of a catalytic cracking propylene assistant and application of the method. Propylene assistant microspheres and a strength improver are mixed, filtered, roasted, washed and dried to obtain a modified propylene assistant; the content of the propylene assistantZSM-5 molecular sieve is 35-50 wt%, the main particle size after modification is 20-150 [mu] m, and the wear index is greatly reduced. The wear index of the propylene assistant improved by the method is reduced by about 50% compared with that before modification, so that a product with better wear resistance and higher intrinsic activity can be obtained on the premise that the content of the molecular sieve in the propylene assistant is high, and the product can be better applied to industrial production and exert catalytic activity.

Description

technical field [0001] The invention relates to the technical field of catalytic cracking additives, in particular to a method and application for increasing the strength of catalytic cracking propylene additives. Background technique [0002] Propylene is an important basic chemical raw material. The catalytic cracking process can use heavy oil as raw material to produce more propylene through deep cracking. Therefore, increasing the propylene yield of the catalytic unit is an important way to improve the overall benefit of the refinery. The addition of catalytic cracking additives that produce more propylene in the catalytic cracking process is widely used because of its advantages of simple operation, flexible reaction and less impact on the whole process. [0003] FCC propylene additives are the same as other catalytic cracking catalysts. In addition to meeting the reaction performance required by the process for product distribution, they also need to meet the physical...

Claims

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Application Information

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IPC IPC(8): B01J29/40C07C4/06C07C11/06
CPCB01J29/40C07C4/06B01J2229/20C07C2529/40C07C11/06Y02P20/52
Inventor 潘红霞张荣榜黄岩
Owner 湖北赛因斯科技开发有限公司
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