Catalytic cracking auxiliary agent containing donut-shaped mesoporous material and preparation method and application thereof

A catalytic cracking aid and mesoporous material technology, applied in catalytic cracking, hydrocarbon cracking to hydrocarbon production, molecular sieve catalyst, etc. Low cost of raw materials and simple operation

Pending Publication Date: 2021-10-22
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of catalytic cracking aid containing doughnut-shaped mesoporous material and its preparation method in order to overcome the defects of low propylene selectivity of catalytic cracking auxiliary agent and low octane number of cracked gasoline existing in the prior art and application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalytic cracking auxiliary agent containing donut-shaped mesoporous material and preparation method and application thereof
  • Catalytic cracking auxiliary agent containing donut-shaped mesoporous material and preparation method and application thereof
  • Catalytic cracking auxiliary agent containing donut-shaped mesoporous material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] According to the present invention, the preparation method of the donut-shaped mesoporous material comprises:

[0033] (a) mixing the templating agent and N,N-dimethylformamide with an acidic aqueous solution to obtain a mixture;

[0034] (b) The mixture is contacted with a silicon source, and the obtained mixture is subjected to crystallization, washing, suction filtration, drying and template removal treatment to obtain a doughnut-shaped mesoporous material.

[0035] According to the present invention, the template is a three-block copolymer polyoxyethylene-polyoxypropylene-polyoxyethylene template, preferably P123.

[0036] Preferably, the acidic aqueous solution is an aqueous hydrochloric acid solution prepared from water and hydrogen chloride.

[0037] Preferably, the silicon source is selected from one or more of ethyl orthosilicate, methyl orthosilicate, propyl orthosilicate, sodium orthosilicate and silica sol, preferably ethyl orthosilicate.

[0038]Preferabl...

Embodiment 1

[0073] This embodiment is to illustrate the catalytic cracking aid containing donut-shaped mesoporous material prepared by the method of the present invention.

[0074] (1) Preparation of doughnut-shaped mesoporous materials

[0075] Mix 58g of P123 (0.01mol), 438g (6mol) of N,N-dimethylformamide with 2450g of hydrochloric acid aqueous solution (containing 3mol of HCl), and stir at 40°C until P123 is completely dissolved; 125g of ethyl orthosilicate (0.6 mol) was added to the above solution, and continued to stir at 40°C for 24h to crystallize; after the crystallization was completed, filter to obtain a solid substance; the solid substance was washed with deionized water 8 times, and then dried at 120°C for 10h to obtain the original powder of the mesoporous material; The raw powder of the mesoporous material was calcined at 500° C. for 20 h to remove the template agent, and a doughnut-shaped mesoporous material A was obtained.

[0076] Donut-shaped mesoporous material A has ...

Embodiment 2

[0085] This embodiment is to illustrate the catalytic cracking aid containing donut-shaped mesoporous material prepared by the method of the present invention.

[0086] (1) Preparation of doughnut-shaped mesoporous materials

[0087] Mix 58g of P123 (0.01mol), 365g (5mol) of N,N-dimethylformamide and 1873g of aqueous hydrochloric acid (containing 2mol of HCl), and stir at 25°C until P123 is completely dissolved; 104g of ethyl orthosilicate (0.5mol) was added to the above solution, and continued to stir at 25°C for 40h to crystallize; after the crystallization was completed, the solid substance was obtained by filtration; the solid substance was washed with deionized water 8 times, and then dried at 150°C for 3h to obtain the original mesoporous material powder; the raw powder of the mesoporous material was calcined at 400° C. for 30 h to remove the template agent, and the donut-shaped mesoporous material B was obtained.

[0088] Donut-shaped mesoporous material B has a specif...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Specific surface areaaaaaaaaaaa
Pore volumeaaaaaaaaaa
Average pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to the field of petrochemical industry, and discloses a catalytic cracking auxiliary agent containing a donut-shaped mesoporous material and a preparation method and application thereof. The catalytic cracking auxiliary agent comprises a zeolite molecular sieve with a high silica-alumina ratio and a donut-shaped mesoporous material, wherein the specific surface area of the donut-shaped mesoporous material is 500-900 m < 2 > / g, the pore volume of the donut-shaped mesoporous material is 1.2-1.8 cm < 3 > / g, the average pore size of the donut-shaped mesoporous material is 6-9 nm, the outer diameter of the donut-shaped mesoporous material is 0.5-1 [mu] m, and the inner diameter of the donut-shaped mesoporous material is 0.05-0.1 [mu] m. The auxiliary agent provided by the invention is used in a catalytic cracking process, can greatly improve the propylene concentration of liquefied gas under the condition of not increasing the yield of catalytic cracking liquefied gas, and can also improve the octane number of catalytic cracked gasoline at the same time.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a catalytic cracking additive containing donut-shaped mesoporous material and its preparation method and application. Background technique [0002] In recent years, on the one hand, methods to increase propylene production have received widespread attention, including technologies such as direct propane dehydrogenation to propylene (PDH) and coal to low-carbon olefins (MTP). On the other hand, according to the requirements of environmental protection laws and regulations, my country's requirements for the quality of vehicle fuels are gradually stricter, and clean gasoline with high octane number and low olefin aromatics content will become the mainstream in the future. However, until now, compared with other developed countries, my country's gasoline quality still has a certain gap. [0003] In order to achieve the above purpose, most FCC conventional catalytic cracking uni...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J29/40B01J35/10C10G11/05C07C4/06C07C11/06
CPCB01J29/405C10G11/05C07C4/06B01J35/615B01J35/633C07C11/06Y02P20/52
Inventor 亢宇刘红梅王定博
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap