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A catalytic conversion method for producing clean gasoline from inferior raw material oil

A catalytic conversion method and low-quality raw material oil technology, which is applied in the direction of catalytic cracking, cracking, and hydrocarbon oil treatment, can solve the problems of reducing the effective reaction area of ​​molecular sieves, reducing the reaction activity of molecular sieves, and reducing reaction selectivity. The effect of improving yield and conversion rate

Active Publication Date: 2021-08-06
CHINA PETROLEUM & CHEM CORP +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Although the molecular sieve with IMF structure can have a high alkane cracking ability, it is the same as other ten-membered ring molecular sieves. Due to its narrow pore structure, it is difficult for larger reactant molecules such as polycyclic hydrocarbons to enter the crystal channel for reaction, reducing the molecular sieve capacity. The effective reaction area of ​​the molecular sieve reduces the reactivity of the molecular sieve; on the other hand, larger product molecules such as isoparaffins and aromatics are not easy to diffuse out of the pores of the molecular sieve, which causes secondary reactions such as excessive hydrogen transfer and coking, which lead to the loss of the molecular sieve. Activity, reaction selectivity decreased

Method used

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  • A catalytic conversion method for producing clean gasoline from inferior raw material oil
  • A catalytic conversion method for producing clean gasoline from inferior raw material oil

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0082] This example follows figure 1 The process of the test is carried out, and the vacuum residue A is used as the inferior raw material oil, in the medium-sized device of the riser reactor (the height of the riser reactor 2 is 30 meters, the inner diameter of the pre-lift section is 0.8 meters, and the height of the pre-lift section is 1.5 meters. m, the inner diameter of the first reaction section I is 1 meter, the height of the first reaction section I is 6 meters, the inner diameter of the first expansion section III is 3 meters, the height of the expansion section III is 1 meter, and the second reaction section II Inner diameter is 1 meter, and the height of the second reaction section II is 19 meters, and the inner diameter of outlet section 7 is 0.8 meters, and the height of outlet section 7 is 2.5 meters, the same below) carries out test, and catalyst used is the catalyst prepared by the present invention a. The vacuum residue A enters the lower part of the first re...

Embodiment 2

[0091] This example follows figure 2The flow process of the present embodiment is tested in the medium-sized device of the riser reactor (the height of the riser reactor 2 is 30 meters, the inner diameter of the pre-lift section is 0.8 meters, the height of the pre-lift section is 1.5 meters, the first reaction section 1 The inner diameter is 1 meter, the height of the first reaction section I is 6 meters, the inner diameter of the first expanding section III is 3 meters, the height of the first expanding section III is 1.5 meters, the inner diameter of the reducing section is 1 meter, and the height is 1 meter, the inner diameter of the second diameter expansion section III' is 3 meters, the height of the second diameter expansion section III' is 1.5 meters, the inner diameter of the second reaction section II is 0.8 meters, and the height of the second reaction section II is 17.5 meters M) on test, catalyst used is catalyst A prepared by the present invention. The coker wa...

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Abstract

The invention discloses a catalytic conversion method for producing clean gasoline from inferior raw material oil. The method comprises: a. Sending preheated inferior raw material oil into the riser from the middle and lower part of the first reaction section of the riser reactor to react contact with the first regenerated catalyst in the container and carry out the first catalytic conversion reaction to obtain the first reaction product and half-spent catalyst; b, the first reaction product and the half-spent catalyst obtained in step a in the second reaction section Carry out the second catalytic conversion reaction in the middle to obtain the second reaction product and the spent catalyst, wherein, the catalyst is taken out and supplemented from the diameter-enlarging section, and the catalyst includes IMF structure molecular sieve and Y-type molecular sieve. The catalytic conversion method of the invention can increase the conversion rate of inferior raw material oil, increase the yield of propylene and the octane number of gasoline.

Description

technical field [0001] The invention relates to a catalytic conversion method for preparing clean gasoline from inferior raw material oil. Background technique [0002] The quality of crude oil is getting worse with the continuous increase of crude oil extraction, mainly manifested in the increase of crude oil density, viscosity, heavy metal content, sulfur content, nitrogen content, colloid and asphaltene content and acid value. At present, the price difference between low-quality crude oil and high-quality crude oil is also increasing with the shortage of oil resources, resulting in more and more attention to low-priced low-quality crude oil extraction and processing methods, that is, to increase as much as possible from low-quality crude oil. The yield of light oil has brought great challenges to traditional crude oil processing technology. [0003] Catalytic cracking is an important technical method for the processing of heavy fractions of petroleum, and occupies a very...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/02C10G11/04
CPCC10G11/02C10G11/04C10G2300/1077C10G2300/202C10G2300/70C10G2300/708C10G2400/02C10G2400/04C10G2400/20C10G2400/26
Inventor 陈学峰魏晓丽谢朝钢张久顺欧阳颖
Owner CHINA PETROLEUM & CHEM CORP