A mesoporous material with high cracking activity

A technology of cracking active and porous materials, applied in the field of mesoporous materials, can solve the problems of large steric hindrance effect, easy structure collapse, poor cracking activity, etc., and achieve the effects of good coke selectivity and excellent heavy oil conversion ability.

Active Publication Date: 2017-06-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this molecular sieve is that it needs to use an expensive template agent, and the pore size is only about 2.7nm. It still has a large steric hindrance effect on the cracking reaction of macromolecules. The structure is easy to collapse under high temperature hydrothermal conditions, and the cracking activity is low Difference

Method used

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  • A mesoporous material with high cracking activity
  • A mesoporous material with high cracking activity

Examples

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Embodiment 1

[0029] This example illustrates the preparation of mesoporous materials provided by the present invention.

[0030] The preparation process of this embodiment is the same as that described in CN1565733A. Take Al 2 (SO 4 ) 3 solution and NaAlO 2 The solution is used as the reaction raw material, flow into a gel and adjust the pH of the gel to 9.0, collect a quantitative amount of the gelled slurry, add water glass in proportion to it under vigorous stirring, raise the temperature to 60°C and age for 3 hours; filter and wash with water, press the precipitate Dry basis: Ammonium salt: H 2 Add NH at a weight ratio of O=1:0.5:12 4 Cl and deionized water, ion-exchange the precipitate at 60°C to remove sodium ions, repeat the exchange once for 0.5 hours each time, until the sodium oxide content is lower than 0.3%; then the obtained solid precipitate is calculated on a dry basis :H 2 O=1:8 weight ratio mixed with water for beating, and press P 2 o 5 : MgO: material dry basis ...

Embodiment 2

[0033] This example illustrates the preparation of mesoporous materials provided by the present invention.

[0034] Take Al 2 (SO 4 ) 3 solution and NaAlO 2 The solution is used as the reaction raw material, flow into a gel and adjust the pH of the gel to 9.5, collect a quantitative amount of the gelled slurry, add a quantitative amount of water glass under vigorous stirring, raise the temperature to 70°C and age for 2 hours; filter and wash with water, press the precipitate Dry basis: Ammonium salt: H 2 Add NH at a weight ratio of O=1:1:15 4 Cl and deionized water, ion-exchange the precipitate at 65°C to a sodium oxide content below 0.3%; then press P 2 o 5 : MgO: Precipitate dry basis = 0.015:0.035:1 weight ratio Mix phosphoric acid and magnesium nitrate with the obtained solid precipitate, grind it evenly, dry it at 120°C for 10 hours, and then roast it at 600°C for 2 hours. The invention provides a high cracking active mesoporous material. Record it as A-2.

[003...

Embodiment 3

[0037] This example illustrates the preparation of mesoporous materials provided by the present invention.

[0038] The preparation process of this embodiment is the same as that described in CN1565733A. Quantitative Al 2 (SO 4 ) 3 Put the solution in a beaker, add ammonia water under stirring until the pH of the system = 10.0, and keep the gelling temperature at 40°C; add a certain amount of water glass under stirring conditions, raise the temperature to 80°C and age for 1 hour; precipitate the obtained solid According to the dry basis of the sediment: HCl: H 2 The weight ratio of O=1:0.08:12 was exchanged at 50°C for 30 minutes, filtered and washed with water to keep the sodium oxide content below 0.3%; then the obtained solid precipitate was calculated on a dry basis of the precipitate: H 2 O=1:10 weight ratio mixed with water and beating, and press P 2 o 5 :MgO:TiO 2 : material dry basis=0.075:0.017:0.012:1 weight ratio, add ammonium phosphate, magnesium nitrate and...

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Abstract

A mesoporous material with high cracking activity has a pseudo-boehmite structure, and the anhydrous compound of the mesoporous material comprises, by oxide, 0-0.2wt% of Na2O, 40-85wt% of Al2O3, 10-55wt% of SiO2, 0.5-10wt% of P2O5, 0.5-5wt% of MgO and 0-5wt% of MxOy, wherein the metal M is selected from one or more of IIB group, IIIB group, IVB group and VIIB group in Periodic Table of Elements, x is the highest valence of O, and y is the highest valence of the metal M. The specific surface area, the pore volume and the average aperture of the material are 200-500m<2> / g, 0.5-1.5cm<3> / g and 8-18nm respectively. The aperture range of the mesoporous material is same to the dimension range of heavy oil macromolecules, and multiple metal components have a certain adjustment effect on acidity, and the mesoporous material has excellent heavy oil conversion ability and good coke selectivity.

Description

technical field [0001] The invention relates to a high cracking active mesoporous material and its application, in particular to an active mesoporous material which can effectively improve the cracking capacity of heavy oil and its application in catalytic cracking reaction process. Background technique [0002] As a petroleum refining process, catalytic cracking is widely used in the petroleum processing industry. As the most important process in the secondary processing of crude oil, this process is the main production method of liquefied petroleum gas, gasoline, kerosene and diesel oil. In refineries occupies an important position. In catalytic cracking and hydrocracking processes, heavy fractions such as vacuum distillates or residues of heavier components are reacted in the presence of catalysts to convert them into gasoline, distillates and other liquid cracking products as well as lighter four-carbon The following gaseous cracking products usually require the use of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/182B01J27/187C10G11/04
Inventor 郑金玉罗一斌慕旭宏舒兴田
Owner CHINA PETROLEUM & CHEM CORP
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