A kind of catalytic cracking anti-metal liquid enhancer and preparation method thereof

A catalytic cracking and anti-metal technology, applied in catalytic cracking, catalyst protection, chemical instruments and methods, etc., can solve problems such as easy to block pores and affect nickel resistance, improve reaction selectivity, reduce poisonous effects, and avoid catalysts The effect of the decrease in cracking activity

Active Publication Date: 2020-06-02
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a catalytic cracking anti-metal liquid builder and a preparation method thereof to solve the problem of generating Sb from the reaction of passive nickel agent and nickel in the prior art x Ni y After alloying, it is easy to block the pores of Y-type molecular sieve, thus affecting the performance of nickel resistance

Method used

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  • A kind of catalytic cracking anti-metal liquid enhancer and preparation method thereof
  • A kind of catalytic cracking anti-metal liquid enhancer and preparation method thereof
  • A kind of catalytic cracking anti-metal liquid enhancer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Add 10 parts of antimony triacetate to 100 parts of ethanol and heat to 50°C to fully dissolve to form mixed solution A;

[0029] (2) Add 3 parts of rhodium silicotungstic heteropoly acid into mixed solution A and heat to 80°C to fully dissolve it to obtain mixed solution B;

[0030] (3) 87 parts of VPI-5 molecular sieves were added to the mixed solution B, continued to stir for 10 min at a speed of 2000 rpm, and then filtered to obtain a solid mixture;

[0031] (4) Dry the solid mixture at 130° C. for 10 minutes, and then put it into a muffle furnace at 560° C. and bake it for 30 minutes to obtain the FCC anti-metal liquid enhancer of the present invention.

Embodiment 2

[0033] (1) Add 0.5 parts of triphenylantimony to 100 parts of toluene to fully dissolve it to form a mixed solution A;

[0034] (2) Add 1.5 parts of ruthenium silicon tungsten heteropoly acid into the mixed solution A and heat it to 70°C to fully dissolve it to obtain the mixed solution B;

[0035] (3) 98 parts of the VPI-5 molecular sieves were added into the mixed solution B, and stirred for 30 min at a speed of 100 rpm, and then filtered to obtain a solid mixture;

[0036] (4) Dry the solid mixture at 100° C. for 30 minutes, then put it into a muffle furnace at 580° C. and bake it for 10 minutes to obtain the FCC anti-metal liquid enhancer of the present invention.

Embodiment 3

[0038] (1) Add 20 parts of antimony diisopropyl dithiophosphate into 100 parts of ethanol and heat to 80°C to fully dissolve it to form a mixed solution A;

[0039] (2) Add 10 parts of phosphotungstic dodecanopolyacid into the mixed solution A and heat it to 100°C to fully dissolve it to obtain the mixed solution B;

[0040] (3) 70 parts of the VPI-5 molecular sieves were added to the mixed solution B, continued to stir at a speed of 3600 rpm for 5 min, and then filtered to obtain a solid mixture;

[0041] (4) Dry the solid mixture at 90° C. for 50 minutes, and then put it into a muffle furnace at 480° C. and bake it for 50 minutes to obtain the FCC anti-metal liquid enhancer of the present invention.

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Abstract

Provided are an anti-metal liquid yield booster for catalytic cracking and a preparation method therefor. The liquid yield booster is composed of a VPI-5 molecular sieve, and an antimony-based nickel passivator and a heteropoly acid together loaded in a pore channel thereof, wherein the mass fractions of the components are: 70-98% of a VPI-5 molecular sieve; 0.5-20% of an antimony-based nickel passivator; and 1-10% of heteropoly acid. With the anti-metal liquid yield booster of the present invention, a nickel-porphyrin compound can be concentrated in the pore channel of the VPI-5 for a cracking reaction, and the resulting metal nickel is controlled to remain in the pore channel of the VPI-5, such that the toxicity thereof to a catalytic cracking catalyst is reduced, and furthermore, the nickel element is more quickly exposed and reacted with the nickel passivator, and this is favorable for improving the reaction selectivity and reducing the generation of coke, and there is increased production of liquid products such as gasoline and diesel oil.

Description

technical field [0001] The invention belongs to the field of petroleum catalytic cracking additives, and in particular relates to a catalytic cracking anti-metal liquid enhancer and a preparation method thereof. Background technique [0002] Catalytic cracking is an important deep processing technology for lightening heavy oil. The processing volume of catalytic cracking in my country accounts for more than 35% of the total heavy oil processing, of which 80% of gasoline and 30% of diesel come from catalytic cracking. The catalytic cracking process is a process in which heavy oil undergoes a cracking reaction under the action of high temperature and a catalyst, and is transformed into components such as liquefied petroleum gas, cracked naphtha, gasoline and diesel. Therefore, the catalyst is one of the most important factors in the catalytic cracking process. [0003] At present, my country's fluid catalytic cracking (FCC) catalysts mainly include rare earth-Y molecular sie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J33/00C10G11/05
CPCB01J33/00C10G11/05
Inventor 刘纪昌沈本贤孙辉颜培坤
Owner EAST CHINA UNIV OF SCI & TECH
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