Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of porous material with high cracking activity and its preparation method

A porous material and cracking activity technology, which is applied in chemical instruments and methods, cracking, catalytic cracking, etc., can solve the problems of increasing filtrate and waste residue treatment costs, high reuse costs, and improvement, to achieve product distribution optimization and strong cracking activity , the effect of a high ratio

Active Publication Date: 2020-05-19
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, in the existing technology, the silicon content in the crystallization mother liquor of NaY molecular sieve and the washing filtrate is very different, especially in the washing filtrate, the silicon content will gradually decrease with the increase of the number of washing stages. 10gSiO 2 / L or so, resulting in higher cost of silicon recycling; at the same time, a certain proportion of molecular sieve crystallites may be formed during the crystallization process of NaY molecular sieves. It causes the concentration of suspended matter in the washing filtrate to increase. In order to avoid the generation of miscellaneous crystals caused by the molecular sieve microcrystals re-entering the synthesis system during the recycling process, it is usually necessary to settle the filtrate and cut the slag, which greatly increases the treatment of the filtrate and waste residue. cost

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
  • A kind of porous material with high cracking activity and its preparation method
  • A kind of porous material with high cracking activity and its preparation method
  • A kind of porous material with high cracking activity and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This example illustrates the porous material of the present invention and its preparation.

[0034] Add an appropriate amount of deionized water into the container, heat up to 50°C, and simultaneously crystallize the NaY molecular sieve mother liquor (concentration 55gSiO 2 / L, suspended matter concentration 39mg / L) and sodium metaaluminate solution (102gAl 2 o 3 / L, caustic ratio 2.55) join in the container and carry out continuous reaction and control pH value is 13.8, then concentration is 60gAl 2 o 3 / L Al 2 (SO 4 ) 3 Add the solution to the above slurry, and make the final pH value of the slurry system 9.4, continue to heat up to 80°C and treat for 2 hours, filter and wash the obtained solid precipitate according to the dry basis of the precipitate: ammonium salt: H 2 The weight ratio of O=1:1:10 was exchanged at 60° C. for 0.5 hours. After filtration and washing, the exchange process was repeated once. After filtration, the porous material provided by the pr...

Embodiment 2

[0039] This example illustrates the porous material of the present invention and its preparation.

[0040] Add an appropriate amount of deionized water into the container, heat up to 40°C, and simultaneously crystallize the NaY molecular sieve filtrate (concentration 41gSiO 2 / L, suspended matter concentration 2112mg / L) and sodium metaaluminate solution (159gAl 2 o 3 / L, caustic ratio 1.65) join in the container and carry out continuous reaction and control pH value is 13.6, then concentration is 60gAl 2 o 3 / L Al 2 (SO 4 ) 3 Add the solution to the above slurry, and make the final pH value of the slurry system 10.3, continue to heat up to 60°C and treat for 4 hours, filter and wash the obtained solid precipitate according to the dry basis of the precipitate: ammonium salt: H 2 The weight ratio of O=1:0.4:10 was exchanged at 65° C. for 1 hour, filtered and washed with water, and the exchange process was repeated. After filtering, the porous material provided by the prese...

Embodiment 3

[0045] This example illustrates the porous material of the present invention and its preparation.

[0046] Add an appropriate amount of deionized water in the container, and at room temperature and under vigorous stirring, the NaY molecular sieve crystallization filtrate (concentration 42gSiO 2 / L, suspended matter concentration 630mg / L) and sodium metaaluminate solution (41gAl 2 o 3 / L, caustic ratio 11.5) join in the container and carry out continuous reaction and control pH value is 13.3, then concentration is 60gAl 2 o 3 / L AlCl 3 Add the solution to the above slurry, and make the final pH value of the slurry system 8.6, continue to heat up to 50°C and treat for 8 hours, filter and wash the obtained solid precipitate according to the dry basis of the precipitate: ammonium salt: H 2 The weight ratio of O=1:0.5:10 was exchanged at 55° C. for 0.5 hours. After filtration and washing, the exchange process was repeated once. After filtration, the porous material provided by ...

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
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

Provided is a high-cracking-activity porous material. The high-cracking-activity porous material has the characteristics of comprising a pseudo-boehmite structure and a FAU crystal phase structure atthe same time, and comprises 15-45% of silicon and 55-85% of aluminum by weight of oxides, wherein c / d=1.2-1.6, c is the surface Al / Si atomic ratio measured by using an XPS method, d is the bulk-phaseAl / Si atomic ratio measured by using an XRF method, and the total specific surface area is 300-500 m<2> / g; and the ratio of the micropore specific surface area to the total specific surface area is not more than 8%, the average pore diameter is 5-18 nm, and the ratio, measured through pyridine-IR at 200 DEG C, of the number of B acid centers to the number of L acid centers is 0.14-0.28.

Description

technical field [0001] The invention relates to a porous material with high cracking activity and a preparation method thereof, in particular to a porous material containing pseudoboehmite structure and trace FAU crystal phase structure, special surface properties, high proportion of B acid centers, and high cracking activity. Strong porous materials and their corresponding preparation methods. Background technique [0002] As an important reaction process in petroleum refining and processing, fluid catalytic cracking has been widely used in petroleum processing industry and plays a pivotal role in refineries. In the process of catalytic cracking reaction, heavy distillate such as vacuum distillate oil or residue oil of heavier components undergoes cracking reaction in the presence of catalyst, and is converted into liquid cracking products such as gasoline and diesel oil and lighter gaseous cracking products. Catalytic cracking reaction Generally follow the carbanion react...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08B01J35/10C10G11/05
CPCB01J29/08B01J35/1019B01J35/1061C10G11/05C10G2300/70
Inventor 郑金玉王成强罗一斌
Owner CHINA PETROLEUM & CHEM CORP