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Modified Y zeolite and preparation method thereof and cracking catalyst containing modified Y zeolite

A catalyst and zeolite technology, applied in physical/chemical process catalysts, molecular sieve catalysts, cracking and other directions, can solve the problem of low gasoline yield of modified Y zeolite cracking catalysts

Active Publication Date: 2016-11-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet this modified Y zeolite cracking catalyst gasoline yield is not high

Method used

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  • Modified Y zeolite and preparation method thereof and cracking catalyst containing modified Y zeolite
  • Modified Y zeolite and preparation method thereof and cracking catalyst containing modified Y zeolite
  • Modified Y zeolite and preparation method thereof and cracking catalyst containing modified Y zeolite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] At room temperature, get 200g NaY zeolite (dry basis 75% by weight), after beating with 1500g deionized water, add 45 grams (NH 4 ) 2 SO 4 and 45 mL RECl 3 Solution (270 g / L), rare earth salt (in RE 2 o 3 The weight ratio of ammonium salt: NaY zeolite: deionized water is 0.08:0.3:1; After washing with deionized water, the filter cake was roasted at 600° C. in 100% water vapor for 2 hours to obtain a rare earth modified Y zeolite with a water content of 3% by weight.

[0061] 5.23g zirconium nitrate Zr (NO 3 ) 4 ·5H 2 O was dissolved in 200g ethanol (purity 99.9%) to make an impregnating liquid, and the obtained impregnating liquid was mixed evenly with the Y zeolite after the above treatment, kept at room temperature for 1 h, then the resulting product was mixed with 800 ml ethanol, transferred to an autoclave, and washed Inject nitrogen to make the pressure 0.5MPa, then keep at room temperature for 12 hours, filter, dry at 100°C for 24 hours, and bake at 500°C ...

Embodiment 2～7

[0063] The molecular sieves were prepared according to the method provided by the present invention, and the operating conditions and properties of the products are shown in Table 2.

[0064] Table 2

[0065]

[0066] * In Tables 2 to 8, w% means % by weight and is percentage by weight.

Embodiment 8～14

[0086] Examples 8-14 illustrate the hydrothermal stability of the modified Y zeolite prepared in the present invention.

[0087] After aging the modified Y zeolites prepared in Examples 1 to 7 for 12 hours at 800°C and 100% water vapor, measure their crystallinity and specific surface area, and calculate the crystallization retention and specific surface area retention. The results are listed in Table 4.

[0088] And carry out light oil micro-reactivity evaluation, adopt the standard method of RIPP92-90 (see " petrochemical analysis method " (RIPP test method) Yang Cuiding etc. edit, Science Press, published in 1990) evaluate the light oil micro-reactivity of sample, The catalyst loading was 5.0g, the reaction temperature was 460°C, and the raw oil was straight-run light diesel oil with a distillation range of 235-337°C. The product composition was analyzed by gas chromatography, and the light oil microreactivity was calculated according to the product composition. The results...

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PUM

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Abstract

A modified Y zeolite and a preparation method thereof and a cracking catalyst containing the modified Y zeolite are disclosed; the modified Y zeolite comprises 1 to 15 wt% of a IVB metal oxide and 1 to 15 wt% of a rare earth oxide; the ratio of distorted four-coordinated framework aluminum to four-coordinated framework aluminum in the lattice structure of the modified Y zeolite is(0.2-0.8):1, and the ratio of zeolite surface IVB metal content to zeolite internal IVB metal content is not higher than 0.5. The preparation method comprises the following steps: rare earth ion exchange roasting, impregnation of the metal in an organic solvent, treating of zeolite of the impregnated metal in the organic solvent, and roasting. The cracking catalyst comprises 10 to 60 weight% of the modified Y zeolite, 10 to 60 wt% of clay and 5 to 50 wt% of a binder. The modified Y zeolite is used for catalytic cracking, and has high heavy oil cracking capacity, gasoline yield and low coke yield.

Description

technical field [0001] The present invention relates to a modified Y zeolite. Background technique [0002] With the increasingly heavy catalytic cracking raw oil, it is required that the catalytic cracking catalyst should have higher activity and higher hydrothermal stability at the same time, so as to improve the conversion of heavy oil and the ability to resist heavy metal pollution. Therefore, the main Active group member Y zeolite has high thermal and hydrothermal stability, and maintains a suitable distribution of acidic active centers. In order to obtain the Y zeolite with the above properties, the artificially synthesized NaY zeolite is usually modified. Commonly used modification methods include ion exchange, ultra-stabilization treatment, and rare earth modification. Among them, the rare earth modified Y zeolite has high thermal and hydrothermal stability, and is widely used in FCC catalysts. It is generally believed that rare earth ions can significantly enhanc...

Claims

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Application Information

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IPC IPC(8): B01J29/08C10G11/05
Inventor 于善青田辉平王振波
Owner CHINA PETROLEUM & CHEM CORP
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