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Catalytic cracking aid for improving heavy oil conversion capability, and preparation method thereof

A catalytic cracking aid and capability technology, applied in the field of catalytic cracking aid for improving heavy oil conversion capacity and its preparation field, can solve the problem of increasing gasoline octane number, unable to reduce gasoline olefin content, aid heavy oil conversion capacity and heavy metal resistance The pollution ability is not strong enough to achieve the effect of improving quality and improving the distribution of products

Pending Publication Date: 2020-05-12
HUNAN JULI CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The heavy oil conversion ability and heavy metal pollution resistance of the auxiliary agent prepared above are not strong enough, the selectivity of the cracking reaction is not good enough, and at the same time it cannot reduce the gasoline olefin content and increase the gasoline octane number. Therefore, the present invention proposes a method for improving the heavy oil conversion ability. Catalytic cracking additive and preparation method thereof, to solve the deficiencies in the prior art

Method used

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  • Catalytic cracking aid for improving heavy oil conversion capability, and preparation method thereof
  • Catalytic cracking aid for improving heavy oil conversion capability, and preparation method thereof
  • Catalytic cracking aid for improving heavy oil conversion capability, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028]Add water to 3500g of sepiolite to make a slurry with a solid content of 33%, add 250ml of sodium silicate, spray and form it into microspheres, take 2000g of microspheres and roast them in a muffle furnace at 950°C for 4 hours to obtain roasted microspheres A; Add water to 3500g of kaolin to make a slurry with a solid content of 33%, add 250ml of sodium silicate, spray into microspheres, get 350g of microspheres and roast them in a muffle furnace at 820°C for 4 hours to obtain roasted microspheres B; In the state, 4000ml of sodium silicate, 500ml of lye, 760ml of zeolite directing agent, 1900g of roasted particle microspheres, and 330g of roasted particle microspheres were put into the stainless steel reactor in sequence, and the temperature was raised to 98°C for constant temperature crystallization for 30 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 o...

Embodiment 2

[0032] Add 5000g of sepiolite with water to make a slurry with a solid content of 40%, add 250ml of sodium silicate, 70g of Tianqing powder, and 200g of ZSM-5 molecular sieve, spray and form it into granule microspheres, take 400g of granule microspheres and roast them in a muffle furnace at 1000°C After 2 hours, roasted microspheres C were obtained; under stirring, 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 a stainless steel reactor, and the temperature was raised to 100°C , constant temperature crystallization 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. Measured 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, the specific surface...

Embodiment 3

[0036] Mix 2000g of sepiolite and 300g of roasted kaolin and add water to make a slurry with a solid content of 47%, add 60g of sodium carbonate, 50g of polyacrylamide, and 100g of NaY molecular sieve, and spray it into particle microspheres. Take 600g of particle microspheres in a muffle furnace at 880 ℃ roasting for 6 hours to obtain roasted microspheres D; in the state of stirring, 1200ml of sodium silicate, 100ml of lye, 180ml of molecular sieve guiding agent, and 580g of roasted microspheres D were put into a stainless steel reactor, and the temperature was raised to 100°C. Crystallize 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. Measured by X-ray diffraction, it contains 73% NaY zeolite, the zeolite silicon-alumina ratio (molar ratio) is 5.3, the wear index is 1.7, the specific surface area is 693m2 / g, and the pore vol...

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Abstract

The invention discloses a catalytic cracking aid for improving heavy oil conversion capability, and a preparation method thereof. The catalytic cracking aid comprises a natural mineral raw material, adispersant and an adhesive, and the natural mineral raw material is one or two of natural sepiolite, natural kaolinite mineral and roasted kaolinite mineral. The sepiolite and / or kaolinite mineral isused as the main raw material, the kaolin type catalytic cracking aid is prepared by adopting an in-situ crystallization technology, the characteristics that sepiolite is rich in silicon, large in specific surface area and pore volume and contains a magnesium oxide component resistant to heavy metal are utilized, the aid prepared from sepiolite and / or kaolinite mineral has very strong capacity inthe aspect of heavy oil cracking, improves the distribution of the product, improves the quality of gasoline, reduces gasoline olefin, and inreases the octane number of gasoline, and the aid is suitable for heavy oil with high heavy metal content, and is suitable for catalytic cracking of petroleum and various fractions thereof.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, in particular to a catalytic cracking additive for improving the conversion capacity 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, thereby aggravating the damage to the FCC catalyst and affecting the distribution of products, which requires catalysts and additives to have higher activity stability And strong anti-heavy metal performance to reduce heavy oil yield, improve product distribution, and get more valuable target products, [0003] At present, fluid catalytic cracking (FCC) catalysts can be prepared by traditional binder method and in-situ crystallization method. Its biggest feature is that the catalyst has flexible modulation properties. The in-situ crystallization technology ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/16B01J21/10B01J29/14B01J29/46B01J35/10B01J37/03B01J37/30C10G11/02C10G11/05
CPCB01J21/16B01J21/10B01J29/146B01J29/46B01J37/0009B01J37/031B01J37/30C10G11/02C10G11/05C10G2300/205C10G2300/305C10G2400/02B01J2229/18B01J35/617B01J35/615B01J35/633
Inventor 谈立成郑淑琴
Owner HUNAN JULI CATALYST
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