Aluminum oxide as well as preparation method and application thereof

A kind of alumina and aluminum source technology, applied in the direction of alumina/hydroxide preparation, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problems of poor anti-carbon deposition performance and anti-heavy metal pollution performance, and achieve high performance Optimization, effect of high hydrocarbon oil catalytic cracking activity

Active Publication Date: 2020-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst is used in the processing of inferior oil products, and its anti-carbon deposition performance and anti-heavy metal pollution performance are not good.

Method used

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  • Aluminum oxide as well as preparation method and application thereof
  • Aluminum oxide as well as preparation method and application thereof
  • Aluminum oxide as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0042] The method for preparing alumina provided by the invention, one embodiment is as follows: Al(OH) source (using Al 2 o 3 meter), Al(OH) 3 source (in Al 2 o 3 According to the molar ratio of 0.5-2: 0.5-2: 0.5-2: 5-20, such as 0.8-1.2: 0.8-1.2: 0.8-1.2: 8-12, the pore expander and water are mixed evenly, and the obtained mixture Aging at greater than 110-200°C, such as 120-180 or 120-150°C, in the presence of water vapor for 2-5h. During the aging treatment, the moisture outside the solid in the mixture evaporates at the boiling point to make the mixture solid, and then the solid state is contacted with water vapor at 110-180° C. for aging treatment for 2-5 hours. Then the obtained solid is dried in an air atmosphere at 100-180° C., for example, dried at 120-150° C. to obtain a precursor of alumina, and the obtained alumina precursor is calcined at 500-1000° C. for 2-5 hours, for example Calcining at 500-700° C. for 3-5 hours to obtain the alumina or alumina matrix pr...

Embodiment 1

[0065] Al(OH) structure aluminum source, Al(OH) 3 Structural aluminum source, citric acid, ammonium bicarbonate, and water are mixed according to the molar ratio of 1:1:0.5:0.5:10, stirred for 1 hour, and the obtained mixture is heated at 130°C, 1 atm (absolute pressure, the same below), and 100% water vapor by volume. Conditions (the water vapor content in the atmosphere is 100% by volume, the same below) was aged for 3 hours, and then the obtained solid was dried at 120°C in an air atmosphere to obtain the precursor A of alumina, and the obtained precursor A was heated at 700°C Calcined for 3 hours, the alumina matrix provided by the present invention was finally obtained, denoted as JZ1, and the analysis data of its physical and chemical properties are shown in Table 1.

[0066] Composition of alumina precursor A: based on dry weight, Al 2 o 3 Content 96.7% by weight, Fe 2 o 3 Content 0.3 wt%, Na 2 O content 0.05% by weight, SiO 2 The content is 0.24% by weight, and t...

Embodiment 2

[0068] Al(OH) structure aluminum source, Al(OH) 3 The structural aluminum source, n-butylamine, and water were stirred and mixed for 1 hour according to the molar ratio of 1:1:1:10, and the obtained slurry was aged for 3 hours at 130°C, 1 atm, and 100% volume water vapor atmosphere, and then the obtained solid was heated at 120°C Drying in an air atmosphere, and calcining at 700°C for 3 hours, the alumina provided by the present invention is finally obtained, denoted as JZ2, and its physical and chemical property analysis data are shown in Table 1.

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Abstract

The invention relates to aluminum oxide and a preparation method and application thereof. The aluminum oxide has a crystal phase structure of gamma-aluminum oxide, and the crystallinity of the gamma-aluminum oxide is 40-60%; based on the volume of the pores of 2-100 nm, the pore volume of the pores of 2-5 nm accounts for 0-10%, the pore volume of the pores greater than 5-10 nm accounts for 10-25%,the pore volume of the pores of greater than 10-100 nm accounts for 65-90%, and the probable pore diameter is 10-25 nm; and the ratio of the acid B to the acid L is 0.06-0.1. The preparation method comprises the following steps: treating a mixture containing two aluminum oxide sources and a pore-enlarging agent in a certain proportion in a water vapor atmosphere, and roasting. The aluminum oxideis used for preparing a catalytic cracking catalyst, has a better inferior oil conversion effect, and can have higher gasoline yield and lower coke yield.

Description

technical field [0001] The invention relates to a structure-optimized alumina used for a catalytic cracking agent and a preparation method thereof. Background technique [0002] As petroleum resources become increasingly heavy and inferior, how to rationally utilize inferior residual oil is a difficult problem for the oil refining industry. Catalytic cracking (FCC) has always been the most important crude oil secondary processing method in my country's oil refineries because of its advantages such as strong feedstock adaptability, high yield of light oil products, and high octane number of gasoline. The core of catalytic cracking lies in the catalyst. However, impurities such as heavy metals, S, N, and residual carbon in inferior residual oil are high, which can easily poison and pollute catalytic cracking catalysts, resulting in a decline in catalytic performance, affecting the distribution of catalytic cracking products, and thus affecting refining revenue. [0003] Trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/78B01J29/14B01J29/46B01J29/76B01J29/80C01F7/02C01F7/30C10G11/05C01F7/441
CPCB01J23/78B01J29/146B01J29/46B01J29/7615B01J29/80C01F7/02C01F7/30C10G11/05C10G2400/02C10G2400/04C10G2300/70B01J21/04B01J37/04C10G11/18C01P2006/17C01P2006/12C01P2006/14C01P2006/80C01P2006/16C01F7/441C01F7/20B01J29/00B01J35/1019B01J35/1038B01J35/1061B01J37/0045B01J37/082B01J37/033B01J35/10B01J29/088B01J35/1066B01J37/0009B01J37/038B01J37/10C10G2300/202C10G2300/205C10G2300/301C10G2300/302C10G2300/308
Inventor 张杰潇李家兴张万虹许明德严加松田辉平
Owner CHINA PETROLEUM & CHEM CORP
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