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

A catalytic cracking aid, gasoline octane number technology, applied in catalytic cracking, molecular sieve catalysts, chemical instruments and methods, etc. Hydrocarbon content, good catalytic cracking performance, and the effect of improving gasoline octane number

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 aromati

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] In 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 of aluminum component, as P 2 O 5 45-80% by weight of the phosphorus component and 0-40% by weight of the first clay on a dry basis, with a P / Al weight ratio of 1.0-6.0, a pH of 1-3.5, and a solid content of 15- 60% by weight; for example, including Al 2 O 3 15-40% by weight of aluminum component, as P 2 O 5 45-80% by weight of the phosphorus component and 1-40% by weight of the first clay on a dry basis; preferably containing Al 2 O 3 15-35% by weight of aluminum component, as P 2 O 5 The P / Al weight ratio is preferably 1.2-6.0, more preferably 2.0-5.0, and the pH value is preferably 1.5 based on 50-75 wt% of the phosphorus component and 8-35 wt% of the first clay on a dry basis. -3.0.

[0036] In another specific embodiment, based on the dry basis weight of the phosphor-aluminum inorganic binder, t...

Example Embodiment

[0079] Example 1

[0080] ZSM-5 molecular sieve (produced by Qilu Branch of the catalyst, synthesized by amine-free method, n(SiO 2 ) / n(Al 2 O 3 )=27) Use NH 4 Cl solution exchange washing to Na 2 O content is less than 0.2% by weight, filter cake; take 100g of the above molecular sieve (dry basis) and add water to prepare a molecular sieve slurry with a solid content of 10% by weight, add 20g of oxalic acid during stirring, and then add 200g of hydrochloric acid (mass fraction 10%) and 167g fluorosilicic acid (mass fraction 3%) was added in parallel for 30 minutes; heated to 65°C and stirred for 1 hour, filtered and washed until the filtrate was neutral; added water to the filter cake to obtain a molecular sieve slurry with a solid content of 40% by weight. 2.4gH 3 PO 4 (Concentration 85% by weight) and 6.6gZn(NO 3 ) 2 ·6H 2 O, mix evenly, soak, dry, and roast at 550°C for 2 hours. Molecular sieve A is obtained, and the physical and chemical properties are listed in Table 1.

Example Embodiment

[0095] Example 2

[0096] ZSM-5 molecular sieve (produced by Qilu Branch of the catalyst, synthesized by amine-free method, n(SiO 2 ) / n(Al 2 O 3 )=27) Use NH 4 Cl solution exchange washing to Na 2 O content is less than 0.2% by weight, filter cake; take 100g of the above molecular sieve (dry basis) and add water to prepare a molecular sieve slurry with a solid content of 10% by weight, add 40g of citric acid during stirring, and then add 100g of sulfuric acid (mass fraction 10%) Add 500g of fluorosilicic acid (mass fraction 3%) co-currently, adding time 30min; increase the temperature to 45°C and stir for 1h, filter and wash until the filtrate is neutral; add water to the filter cake to make a molecular sieve slurry with a solid content of 40% by weight. Add 2.0gH 3 PO 4 (85% by weight concentration) and 3.6 g of Ga 2 (SO 4 ) 3 ·16H 2 O, mix evenly, soak, dry, and roast at 550°C for 2 hours. Molecular sieve B was obtained, and the physical and chemical properties are listed in Ta...

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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, and 0-60wt% of second clay in terms of the dry base weight. 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 octanenumber 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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IPC IPC(8): B01J29/40B01J29/46C10G11/05
Inventor 刘倩倩杨雪陈蓓艳朱玉霞邓景辉沈宁元欧阳颖黄志青罗一斌蒋文斌田辉平
Owner CHINA PETROLEUM & CHEM CORP
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