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Hydrocracking catalyst as well as preparation method and application thereof

A hydrocracking and catalyst technology, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of not meeting industrial requirements, poor catalyst activity, etc., so as to improve the effective utilization rate and reduce the amount of strong acid , the effect of reducing production costs

Inactive Publication Date: 2020-06-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nitrogen resistance of the catalyst prepared by using this carrier is improved, but the activity of the catalyst is poor, which cannot meet the industrial requirements to a certain extent

Method used

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  • Hydrocracking catalyst as well as preparation method and application thereof
  • Hydrocracking catalyst as well as preparation method and application thereof
  • Hydrocracking catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of hydrocracking catalyst carrier

[0032] Put 20gY molecular sieve, 8gSAPO-34 molecular sieve, 80g alumina, and 4.2g microcrystalline cellulose into the rolling machine for rolling. After rolling for 20 minutes, add guar gum (0.3%) and nitric acid (2.5%) The aqueous solution is rolled into a paste and extruded. The extruded strips are dried at 120°C for 3 hours and calcined at 500°C for 3 hours to obtain the carrier Z1.

[0033] (2) Catalyst preparation

[0034] The carrier Z1 is impregnated with an equal volume of impregnating solution containing Mo, Ni, P and bis-[3-(triethoxysilyl)propyl]-tetrasulfide, dimethylamide and water, bis-[3-(tri The molar ratio of ethoxysilane)propyl]-tetrasulfide to the Mo content of the final catalyst is 0.05:1, dried at 120°C for 3h, and calcined at 390°C for 2 hours, the finally obtained catalyst is denoted as C-1. Table 1.

Embodiment 2

[0036] (1) Preparation of hydrocracking catalyst carrier

[0037] Put 25gY molecular sieve, 6gSAPO-34 molecular sieve, 70g of alumina, and 2.8g of microcrystalline cellulose into the rolling machine for rolling. After rolling for 25 minutes, add guar gum (0.4%) and nitric acid (2.5%). aqueous solution, rolled into a paste, and extruded, the extruded strips were dried at 120°C for 3 hours, and roasted at 550°C for 3 hours to obtain the carrier Z2.

[0038] (2) Catalyst preparation

[0039] Impregnate carrier Z2, N-aminoethyl-3-aminopropyl, with equal volumes of impregnating solution containing Mo, Ni, P and N-aminoethyl-3-aminopropylmethyldimethoxysilane, glycerol and water The molar ratio of methyldimethoxysilane to the Mo content of the final catalyst was 0.08:1, dried at 120°C for 3 hours, and calcined at 410°C for 2 hours. The finally obtained catalyst was designated as C-2.

Embodiment 3

[0041] (1) Preparation of hydrocracking catalyst carrier

[0042] Put 25gY molecular sieve, 7gSAPO-34 molecular sieve, 75g aluminum oxide, and 2.0g microcrystalline cellulose into the rolling machine for rolling. After rolling for 30 minutes, add guar gum (0.4%) and acetic acid (2.8%) The aqueous solution was rolled into a paste and extruded. The extruded strips were dried at 120°C for 3 hours and calcined at 560°C for 3 hours to obtain carrier Z3.

[0043] (2) Catalyst preparation

[0044] Impregnation carrier Z3 is impregnated with equal volumes of impregnating liquid containing Mo, Ni, P and methyltriacetoxysilane, dimethyl sulfoxide and water, and the molar ratio of methyltriacetoxysilane and final catalyst Mo content is 0.08: 1. After drying at 120°C for 3 hours and calcining at 380°C for 2 hours, the catalyst finally obtained is designated as C-3. Catalyst properties are listed in Table 1.

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Abstract

The invention discloses a hydrocracking catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier, an active component and silicon dioxide formed by loading silane and then roasting, wherein the carrier contains a Y molecular sieve and an SAPO-34 molecular sieve; the active component comprises a VIB group metal and a VIII group metal, and the weight contentof silicon dioxide formed by roasting after loading silane in the catalyst is 0.5 wt%-5wt%. The preparation method of the hydrocracking catalyst comprises the following steps: (1) uniformly mixing materials containing a Y molecular sieve and an SAPO-34 molecular sieve, adding the mixture into an acidic solution, molding, drying and roasting to obtain a carrier; and (2) introducing active components into the carrier prepared in the step (1), the active components being VIB group and VIII group metals, and drying and roasting after introduction to obtain the hydrocracking catalyst. The catalystis used for well matching reaction activity and medium oil selectivity in a hydrocracking reaction process, and has excellent product properties.

Description

technical field [0001] The present invention relates to a hydrocracking catalyst and its preparation method and application, in particular to a high and medium oil type hydrocracking catalyst and its preparation method and application. Background technique [0002] As the demand for middle distillates in the international oil market continues to increase, more middle distillates need to be obtained from heavy distillates, especially aviation kerosene, and the hydrocracking process is the key to lightening heavy oil One of the means. The process has the characteristics of strong raw material adaptability, good product quality, strong adjustment flexibility, high yield of middle distillate, and flexible product structure, which makes the status of hydrocracking technology more and more important, especially for the current problems faced by our country. Due to the shortage of petroleum resources, increasingly stringent environmental protection requirements, and the fact that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85C10G49/08
CPCB01J29/005C10G49/08B01J29/166B01J29/85B01J2229/18
Inventor 唐兆吉杜艳泽樊鸿飞王继锋于正敏孙晓燕
Owner CHINA PETROLEUM & CHEM CORP
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