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Catalytic cracking catalyst and application

A catalytic cracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, hydrocarbon cracking and hydrocarbon production, etc., can solve the problems of low propylene selectivity, low propylene yield, high hydrogen transfer activity of catalysts, etc., and achieve high yield , hydrogen transfer activity can be reduced, the effect of product distribution improvement

Inactive Publication Date: 2010-05-12
SINOPEC LUOYANG PETROCHEM ENG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a catalytic cracking catalyst to overcome the shortcomings of high catalyst hydrogen transfer activity in the prior art, low propylene selectivity in the target product, and low propylene yield.

Method used

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  • Catalytic cracking catalyst and application
  • Catalytic cracking catalyst and application
  • Catalytic cracking catalyst and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Take 1000 g of a commercially available HZSM-5 molecular sieve with a silicon-aluminum ratio of 35, and impregnate it with 4000 ml of a 0.15M ammonium phosphate solution. Rapidly stir and beat at 40°C for 2 hours, then filter the slurry, dry at 110°C for 2 hours, pulverize and then impregnate. After drying, roasting and crushing, the same method is used to modify it with Mg. Hereinafter referred to as the synthetic A-ZSM-5 modified molecular sieve, its phosphorus content is 6.0% (in P 2 o 5 In terms of), the magnesium content is 3.0% (in terms of MgO).

[0025] Take 1000g of a commercially available Y-type molecular sieve and impregnate it with 1200ml of 0.6M lanthanum nitrate solution. Rapidly stir and beat at 40°C for 2 hours, then filter the slurry, dry at 110°C for 2 hours, pulverize and then impregnate. After drying, roasting and crushing, it is ready for use. This composition is referred to as REY1 modified molecular sieve hereinafter, and its lanthanum conte...

Embodiment 2

[0028] A commercially available HZSM-5 molecular sieve with a silicon-aluminum ratio of 60 was modified with P and Mg elements respectively, and the modification method was the same as in Example 1. Hereinafter referred to as B-ZSM-5 modified molecular sieve, the compound contains 6.0% phosphorus (in P 2 o 5 Calculated), the magnesium content is 3.0% (calculated as MgO).

[0029] Adopt B-ZSM-5 and REY1 type modified molecular sieve (dry base, B-ZSM-5: REY1=9: 1), carrier is amorphous aluminum silicate, according to the method for preparing catalyst described in embodiment 1, Catalyst B was prepared. Based on the catalyst (dry basis), it contains 35% by weight of molecular sieves, 1.89% by weight of P 2 o 5 , 0.95% by weight of MgO, 0.28% by weight of lanthanum oxide.

Embodiment 3

[0031] A commercially available HZSM-5 molecular sieve with a silicon-aluminum ratio of 120 was modified with P and Mg elements respectively, and the modification method was the same as in Example 1. This composition is referred to as C-ZSM-5 modified molecular sieve hereinafter, and its phosphorus content is 6.0% (in P 2 o 5 In terms of), the magnesium content is 3.0% (in terms of MgO).

[0032] Adopt C-ZSM-5 and REY1 type modified molecular sieve (dry basis, C-ZSM-5: REY1=9: 1), carrier is amorphous aluminum silicate, according to the catalyst preparation method described in embodiment 1, prepare Catalyst C was obtained. Based on the catalyst (dry basis), it contains 35% by weight of molecular sieves, 1.89% by weight of P 2 o 5 , 0.95% by weight of MgO, 0.28% by weight of lanthanum oxide.

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Abstract

A catalyst for catalytic cracking process is composed of active component (15-65 Wt %), adhesive (10-40) and carrier (15-70). Said active component is the HZSM-5 molecular sieve modified by two or more of P, Mg, Ga and Ge and the modified Y molecular sieve (0.1-10 Wt %) which is the REY molecular sieve prepared by RE metal ion exchange. It has low hydrogen transfer activity.

Description

technical field [0001] The invention belongs to the field of catalytic cracking of hydrocarbon oil under the condition of non-hydrogen, and in particular relates to a catalyst for producing propylene in a catalytic cracking device and its application. Background technique [0002] Developing new technologies and new catalytic materials, increasing production of petrochemical raw materials, taking the road of refining and chemical integration, and producing high value-added petrochemical products are important ways to improve the economic benefits of oil refining enterprises. Low-carbon olefins, especially propylene, are the main raw materials of petrochemical industry and important components for the production of environmentally friendly fuels. Using mature catalytic cracking (FCC) technology to increase propylene production has been the goal pursued by many refineries. According to statistics, currently about 40% of the total domestic propylene comes from catalytic cracki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/80B01J29/40B01J29/08C07C4/06C07C11/06
CPCY02P20/52
Inventor 孟凡东张洁宋业恒郑红霞郭荣群陈宇岳晓伟李彦平
Owner SINOPEC LUOYANG PETROCHEM ENG CORP
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