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Catalytic cracking catalyst capable of increasing yield of gasoline rich in isoalkane

A technology for catalytic cracking and isoparaffins, applied in catalytic cracking, physical/chemical process catalysts, molecular sieve catalysts, etc., to achieve the effects of improving composition, promoting isomerization reaction, and easy compounding

Inactive Publication Date: 2014-06-25
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these measures are contradictory to the high temperature, short contact time operation mode commonly used in catalytic cracking units

Method used

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  • Catalytic cracking catalyst capable of increasing yield of gasoline rich in isoalkane
  • Catalytic cracking catalyst capable of increasing yield of gasoline rich in isoalkane
  • Catalytic cracking catalyst capable of increasing yield of gasoline rich in isoalkane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] SAPO-11 molecular sieve is used, which is recorded as 1# additive.

Embodiment 2

[0034] Weigh 10g SAPO-11 molecular sieve, and measure 100mL of citric acid solution as a treatment agent. Add the SAPO-11 molecular sieve and the treatment agent into the round bottom flask in sequence, and place it at 40°C and stir at a constant speed. After reacting for 30 minutes, the stirring was stopped, and the product in the flask was suction-filtered, washed, dried at 100°C for 6 hours, and then calcined at 550°C to obtain the auxiliary agent.

[0035] The concentration of the citric acid solution used in this example is 0.1mol / L, 0.25mol / L, 0.5mol / L, 0.75mol / L and 1.0mol / L respectively, the auxiliary The additives are sequentially recorded as 2# auxiliary agent, 3# auxiliary agent, 4# auxiliary agent, 5# auxiliary agent and 6# auxiliary agent.

[0036] See Table 1 for the pore structure properties of the additives prepared by treating Example 1 and Example 2 with different concentrations of citric acid.

[0037] Table 1 Pore structure properties of meso-SAPO-11 prep...

Embodiment 3

[0040] Weigh 10 g SAPO-11 molecular sieve, and measure 100 mL of 0.5 mol / L citric acid treatment agent. Add the SAPO-11 molecular sieve and treatment agent into the round bottom flask in turn, heat and stir at a constant speed. After reacting for 30 minutes, the stirring was stopped, and the product in the flask was suction-filtered, washed, dried at 100°C for 6 hours, and then calcined at 550°C to obtain the auxiliary agent.

[0041] The heating temperatures used in this example are 23°C, 60°C, 80°C and 100°C respectively, and the prepared 2 additives are respectively recorded as 7# auxiliary agent, 8# auxiliary agent, 9# auxiliary agent and 10# auxiliary agent. The pore structure performance of each additive is shown in Table 2.

[0042] Table 2 Pore structure properties of meso-SAPO-11 prepared at different citric acid treatment temperatures

[0043]

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Abstract

The invention relates to a catalytic cracking catalyst, and particularly relates to a catalytic cracking catalyst capable of increasing the yield of gasoline rich in isoalkane for petroleum hydrocarbon catalytic cracking reaction. The catalytic cracking catalyst consists of the following raw materials in parts by weight: 30 parts of a USY molecular sieve, 5-15 parts of an auxiliary, 50 parts of a catalyst carrier and 10 parts of a bonding agent. The auxiliary is a silicoaluminophosphate molecular sieve or a citric acid modified silicoaluminophosphate molecular sieve. The catalyst prepared from the auxiliary can increase the yield of gasoline components rich in isoalkane by virtue of macromolecule hydrocarbon cracking reaction without changing existing equipment and fundamental process.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst, in particular to a catalytic cracking catalyst used for catalytic cracking reaction of petroleum hydrocarbons to increase production of gasoline rich in isoparaffins. Background technique [0002] Isoparaffins, especially C4-C6 low-carbon isoparaffins, have high octane number, low sensitivity, ideal volatility and combustion properties, and are ideal components of gasoline. At present, the technology of catalytic cracking to reduce olefins mainly converts the olefin components generated in it into alkanes and aromatics by modulating the catalytic cracking reaction. The essence of this type of catalyst is to add some hydrogen transfer additives to improve the secondary reaction of catalytic cracking olefins conversion and achieve the purpose of reducing olefins. [0003] The cracking reaction mainly occurs in the bottom section of the riser reactor, while the secondary reaction mainly occurs in th...

Claims

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Application Information

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IPC IPC(8): B01J29/85C10G11/05
Inventor 阎子峰刘振刘欣梅乔柯许本静宋浩杜振宇高雄厚张忠东
Owner PETROCHINA CO LTD
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