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Catalytic cracking assistant for improving gasoline octane number barrel yield and preparation method thereof

A technology of catalytic cracking additives and gasoline octane number, which is applied in catalytic cracking, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of reduced gasoline yield and non-compliance with the composition requirements of new clean gasoline, and achieve improved isomerization The content of hydrocarbons, good catalytic cracking performance, and the effect of increasing octane barrels

Active Publication Date: 2018-01-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] In the prior art, the increase of gasoline octane number is mostly achieved by producing more olefins and aromatics, which not only reduces the gasoline yield, but also does not meet the composition requirements of new clean gasoline

Method used

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  • Catalytic cracking assistant for improving gasoline octane number barrel yield and preparation method thereof
  • Catalytic cracking assistant for improving gasoline octane number barrel yield and preparation method thereof
  • Catalytic cracking assistant for improving gasoline octane number barrel yield and preparation method thereof

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Embodiment approach

[0036] A specific embodiment, based on the dry basis weight of the phosphorus-aluminum inorganic binder, the phosphorus-aluminum inorganic binder includes Al 2 o 3 15-40% by weight aluminum component, with P 2 o 5 45-80% by weight of the phosphorus component and 0-40% by weight of the first clay based on dry weight, and its P / Al weight ratio is 1.0-6.0, the pH value is 1-3.5, and the solid content is 15- 60% by weight; for example including Al 2 o 3 15-40% by weight aluminum component, with P 2 o 5 A phosphorus component of 45-80% by weight and a first clay of 1-40% by weight on a dry basis; preferably containing Al 2 o 3 15-35% by weight of the aluminum component, as P 2 o 5 50-75% by weight of the phosphorus component and 8-35% by weight of the first clay on a dry basis, the P / Al weight ratio is preferably 1.2-6.0, more preferably 2.0-5.0, and the pH is preferably 1.5 -3.0.

[0037] Another specific embodiment, based on the dry basis weight of the phosphorus-alumi...

Embodiment 1

[0084] With ZSM-5 molecular sieve (catalyst Qilu branch production, no amine synthesis, n(SiO 2 ) / n(Al 2 o 3 )=27) with NH 4 Cl solution exchange wash to Na 2 O content is lower than 0.2% by weight, filters to obtain filter cake; Get above-mentioned molecular sieve 100g (dry basis) and add water and be mixed with the molecular sieve slurry of solid content 10% by weight, add oxalic acid 20g in stirring, then 200g hydrochloric acid (mass fraction 10%) and 167g of fluosilicic acid (mass fraction 3%) was added in parallel, and the addition time was 30 minutes; the temperature was raised to 65°C and stirred for 1 hour, filtered and washed until the filtrate was neutral; the filter cake was beaten with water to obtain a molecular sieve slurry with a solid content of 40% by weight, and added 2.4gH 3 PO 4 (Concentration 85% by weight) and 6.6gZn(NO 3 ) 2 ·6H 2 O, homogeneously mixed dipping, drying, 550 ℃ roasting treatment for 2 hours. Molecular sieve A was obtained, and th...

Embodiment 2

[0100] With ZSM-5 molecular sieve (catalyst Qilu branch production, no amine synthesis, n(SiO 2 ) / n(Al 2 o 3 )=27) with NH 4 Cl solution exchange wash to Na 2 O content is lower than 0.2% by weight, filters to obtain filter cake; Get above-mentioned molecular sieve 100g (dry basis) and add water and be mixed with the molecular sieve slurry of solid content 10% by weight, add citric acid 40g in stirring, then add 100g sulfuric acid (mass fraction 10%) and 500g of fluosilicic acid (3% by mass) were added in parallel, and the addition time was 30min; the temperature was raised to 45°C and stirred for 1h, filtered and washed until the filtrate was neutral; the filter cake was beaten with water to obtain a molecular sieve slurry with a solid content of 40% by weight, Add 2.0gH 3 PO 4 (concentration 85% by weight) and 3.6 grams of Ga 2 (SO 4 ) 3 ·16H 2 O, homogeneously mixed dipping, drying, 550 ℃ roasting treatment for 2 hours. Molecular sieve B was obtained, and the phys...

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Abstract

The invention discloses a catalytic cracking assistant for improving gasoline octane number barrel yield and a preparation method thereof. Based on a dry base weight, the assistant comprises 10-75wt%of an MFI structural molecular sieve containing phosphorus and loaded metal in terms of the dry base weight, 3-40wt% of a phosphorus aluminum inorganic binder in terms of the dry base weight, 1-30wt%of other inorganic binder in terms of oxide, 0-60wt% of second clay in terms of the dry base weight, and 0.5-15wt% of a metal additive selected from at least one of VIII group metals and manganese, zinc, gallium. The assistant provided by the invention can be applied to a catalytic cracking process to increase the content of isohydrocarbon in gasoline so as to increase the gasoline octane number,and at the same time can maintain the gasoline yield basically unchanged, thus improving the gasoline octane number barrel yield.

Description

technical field [0001] The invention relates to a catalytic cracking additive for improving gasoline octane barrels and a preparation method thereof. Background technique [0002] In recent years, the number of domestic motor vehicles has continued to rise, supporting the strong demand for domestic gasoline terminal consumption. During the "Twelfth Five-Year Plan" period, the average annual growth rate of automobile sales is 11%, driving the demand for gasoline to maintain an average annual growth rate of 5%. It is estimated that the apparent consumption of gasoline will reach 98Mt by 2015. With the commissioning of a new round of dedicated propylene production capacity, global propylene supply will greatly outpace demand growth in the next five years. It is predicted that global propylene capacity will increase by 30Mt in the next five years, while demand growth is expected to be only 22Mt. This gap between supply and demand may lead to lower propylene prices. Driven by m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85C10G11/05
Inventor 杨雪欧阳颖朱玉霞刘倩倩陈蓓艳邓景辉罗一斌蒋文斌沈宁元黄志青田辉平
Owner CHINA PETROLEUM & CHEM CORP
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