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Catalytic cracking auxiliary agent for increasing heavy oil conversion performance and preparation method thereof

A catalytic cracking additive and capacity technology, which is applied in the field of catalytic cracking additive and its preparation, can solve the problem of poor hydrothermal stability of the catalyst, and achieve the effects of reducing gasoline olefins, improving distribution, and improving quality

Active Publication Date: 2008-01-16
姚华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrothermal stability of the catalyst prepared by the above method is not as good as that of the catalyst prepared by the in situ technique

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Add water to 3500g sepiolite to make a slurry with a solid content of 33%, add 250ml sodium silicate, spray and form it into particle microspheres, get 2000g particle microspheres and roast them in a muffle furnace at 950°C for 4 hours to obtain roasted particles Microsphere A: add water to 3500g of kaolin to make a slurry with a solid content of 33%, add 250ml of sodium silicate, spray and form it into particle microspheres, take 350g of particle microspheres and roast them in a muffle furnace at 820°C for 4 hours to obtain roasted particle microspheres B: Put 4000ml of sodium silicate, 500ml of lye, 760ml of zeolite directing agent, 1900g of roasted particle microsphere A, and 330g of roasted particle microsphere B into a stainless steel reactor in a stirring state, raise the temperature to 98°C, and crystallize at a constant temperature for 30 Hour. After the crystallization is completed, the mother liquor is removed by filtration, and the filter cake is w...

Embodiment 2

[0032] Embodiment 2: Add water to 5000g sepiolite and make a slurry with a solid content of 40%, add 250ml sodium silicate, 70g Tian Qing powder, 200g ZSM-5 molecular sieve, spray into particle microspheres, get 400g particle microspheres in Roasted in a muffle furnace at 1000°C for 2 hours to obtain roasted microspheres C; in a stirring state, 200ml of sodium silicate, 150ml of lye, 60ml of molecular sieve guide agent, 15g of ZSM-5 molecular sieve, and 380g of roasted microspheres C were put into stainless steel for reaction In the container, the temperature was raised to 100°C, and crystallized at constant temperature for 26 hours. After the crystallization is completed, the mother liquor is removed by filtration, and the filter cake is washed and dried to obtain an intermediate product of in-situ crystallization. As determined by X-ray diffraction, it contains 40% NaY zeolite, the zeolite silicon-aluminum ratio (molar ratio) is 4.9, the wear index is 0.5, and the specific s...

Embodiment 3

[0034] Example 3: 2000g of sepiolite and 300g of roasted kaolin were mixed with water to make a slurry with a solid content of 47%, and 60g of sodium carbonate, 50g of polyacrylamide, and 100g of NaY molecular sieve were added, and sprayed into particle microspheres, and 600g of particle microspheres were obtained. The balls were calcined in a muffle furnace at 880°C for 6 hours to obtain calcined microspheres D; in a stirring state, 1200ml of sodium silicate, 100ml of lye, 180ml of molecular sieve guide agent, and 580g of calcined microspheres D were put into a stainless steel reactor, and the temperature was raised. Temperature crystallization at 100°C for 32 hours. After the crystallization is completed, the mother liquor is removed by filtration, and the filter cake is washed and dried to obtain an intermediate product of in-situ crystallization. As determined by X-ray diffraction, it contains 73% NaY zeolite, the zeolite silicon-alumina ratio (molar ratio) is 5.3, the wea...

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Abstract

The invention provides a catalytic cracking additive for improving the transformation ability of heavy oil and the preparation method. The catalytic cracking additive is produced by spray shaping, roasting, in-situ crystallization and composite elements modification after natural sepiolite is mixed with natural kaolinite mineral or with one or two roasting kaolinite mineral. Provided with high activity, high heavy metal resistance and good selectivity in cracking reaction, the additive can improve the transformation ability of heavy oil and reduce the olefin content and increase gasoline octane number.

Description

technical field [0001] The invention relates to a catalytic cracking additive for improving the conversion ability of heavy oil and a preparation method thereof. Background technique [0002] The heavy and inferior quality of catalytic cracking raw oil is becoming more and more serious, which will inevitably increase the content of heavy metals in the feed, thus aggravating the damage to the FCC catalyst and affecting the distribution of products. This requires catalysts and additives to have high activity stability and strong anti-heavy metal performance, so as to reduce the yield of heavy oil, improve the distribution of products, and obtain more valuable target products. [0003] At present, fluid catalytic cracking (FCC) catalysts can be prepared by traditional binder method and in situ crystallization method. The binder method is made by bonding the molecular sieve and the matrix with a binder and then spraying it. Its biggest feature is that the catalyst has flexible ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/02
Inventor 姚华
Owner 姚华
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