Catalytic cracking aid capable of improving octane barrels of gasoline and preparation method thereof

Abstract

The invention discloses a catalytic cracking aid capable of improving the octane barrels of gasoline and a preparation method thereof. The catalytic cracking aid comprises, on the basis of dry base weight, 10 to 75 wt% of a phosphorus-containing MFI-structure molecular sieve in terms of the dry base weight, 3 to 40 wt% of a phosphorus-aluminum inorganic binder in terms of the dry base weight, 1 to30 wt% of other inorganic binder in terms of oxide and 0 to 60 wt% of second clay in terms of the dry base weight. The catalytic cracking aid provided by the invention has good catalytic cracking performance; and when the aid is blended with a main agent and applied to catalytic cracking reactions of hydrocarbon oil, the octane barrels of catalytically cracked gasoline can be improved and the content of isohydrocarbons in the gasoline is substantially increased, so the octane number of the gasoline is improved.

Description

technical field

[0001] The disclosure relates to a catalytic cracking additive for increasing 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...

Examples

Embodiment approach

[0041] 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 5A 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.

[0042] Another specific embodiment, based on the dry basis weight of the phosphorus-alumin...

Embodiment 1

[0085] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch Company, synthesized without amine method, n(SiO 2 ) / n(Al 2 o 3 )=27) filter out mother liquor, wash with water to Na 2 O content is lower than 3.0% by weight, filter to obtain filter cake; Take above-mentioned molecular sieve 100g (dry basis) and add in 1000g 2.0% NaOH solution, heat up to 65 ℃, after reacting for 30min, after rapidly cooling to room temperature, filter, wash to filtrate neutral. Then, add 800g water to the filter cake to make a slurry, add 40g NH 4 Cl, heated to 75°C, exchanged for 1h, to Na 2 O content is lower than 0.2% by weight, filters, washes, and obtains molecular sieve filter cake; Get above-mentioned molecular sieve 50g (dry basis) and add water and be mixed with the molecular sieve slurry of solid content 10% by weight, add oxalic acid 11g in stirring, then 110g hydrochloric acid (mass fraction 10%) and 92g of fluosilicic acid (mass fraction 3%) were added in parallel,...

Embodiment 2

[0109] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch Company, synthesized without amine method, n(SiO 2 ) / n(Al 2 o 3 )=27) filter out mother liquor, wash with water to Na 2 O content is lower than 3.0% by weight, filter to obtain filter cake; Get above-mentioned molecular sieve 100g (dry basis) and add in 1500g 2.4% NaOH solution, heat up to 60 ℃, after reacting for 45min, after rapidly cooling to room temperature, filter, wash to filtrate neutral. Then, add 800g water to the filter cake to make a slurry, add 40g NH 4 Cl, heated to 75°C, exchanged for 1h, to Na 2 O content is lower than 0.2% by weight, filters, washes, obtains molecular sieve filter cake; Get above-mentioned molecular sieve 50g (dry basis) and add water and be mixed with the molecular sieve slurry of solid content 10% by weight, add citric acid 22g in stirring, then 55g sulfuric acid (mass Fraction 10%) and 280g fluosilicic acid (mass fraction 3%) were added in parallel, and the add...

technical field

[0001] The disclosure relates to a catalytic cracking additive for increasing 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...

Examples

Embodiment approach

[0041] 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 5A 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.

[0042] Another specific embodiment, based on the dry basis weight of the phosphorus-alumin...

Embodiment 1

[0085] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch Company, synthesized without amine method, n(SiO 2 ) / n(Al 2 o 3 )=27) filter out mother liquor, wash with water to Na 2 O content is lower than 3.0% by weight, filter to obtain filter cake; Take above-mentioned molecular sieve 100g (dry basis) and add in 1000g 2.0% NaOH solution, heat up to 65 ℃, after reacting for 30min, after rapidly cooling to room temperature, filter, wash to filtrate neutral. Then, add 800g water to the filter cake to make a slurry, add 40g NH 4 Cl, heated to 75°C, exchanged for 1h, to Na 2 O content is lower than 0.2% by weight, filters, washes, and obtains molecular sieve filter cake; Get above-mentioned molecular sieve 50g (dry basis) and add water and be mixed with the molecular sieve slurry of solid content 10% by weight, add oxalic acid 11g in stirring, then 110g hydrochloric acid (mass fraction 10%) and 92g of fluosilicic acid (mass fraction 3%) were added in parallel,...

Embodiment 2

[0109] Crystallized ZSM-5 molecular sieve (produced by Catalyst Qilu Branch Company, synthesized without amine method, n(SiO 2 ) / n(Al 2 o 3 )=27) filter out mother liquor, wash with water to Na 2 O content is lower than 3.0% by weight, filter to obtain filter cake; Get above-mentioned molecular sieve 100g (dry basis) and add in 1500g 2.4% NaOH solution, heat up to 60 ℃, after reacting for 45min, after rapidly cooling to room temperature, filter, wash to filtrate neutral. Then, add 800g water to the filter cake to make a slurry, add 40g NH 4 Cl, heated to 75°C, exchanged for 1h, to Na 2 O content is lower than 0.2% by weight, filters, washes, obtains molecular sieve filter cake; Get above-mentioned molecular sieve 50g (dry basis) and add water and be mixed with the molecular sieve slurry of solid content 10% by weight, add citric acid 22g in stirring, then 55g sulfuric acid (mass Fraction 10%) and 280g fluosilicic acid (mass fraction 3%) were added in parallel, and the add...

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