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Hydrocracking catalyst for Tscher-Topsch synthesis of heavy wax, its preparation method and application thereof

A technology of hydrocracking and Fischer-Tropsch synthesis, applied in the fields of hydrocarbon oil cracking and petroleum industry, which can solve the problems of low activity and cracking activity reduction, and achieve high isomerization selectivity, good selectivity, and good isomerization performance Effect

Active Publication Date: 2008-09-10
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Gortsema FG etc. have reported in US5047139 that the Y-type molecular sieve (acid leaching) with a content of 7wt% and 50wt% SiO 2 -Al 2 o 3 , 15wt% binder mixed together to support Ni-W, the diesel production efficiency is as high as 87%. For the cracking of heavier oil components and macromolecular hydrocarbons, the micropores of zeolite limit the diffusion of macromolecules, resulting in cracking activity reduce
[0009] US4517074 patent discloses a crude oil hydrocracking catalyst to produce middle distillate oil at 150-370°C. In addition to using zeolite components, the catalyst is characterized in that it uses an Al 2 o 3 -SiO 2 Dispersion system, its SiO 2 The content reaches 20-65wt%. Although the amorphous silicon-alumina in the dispersion system has a certain cracking activity, it needs to be dispersed on a certain alumina matrix to carry a large amount of pore volume and specific surface of the hydrogenation metal component. Although the catalyst has a high medium oil selectivity, generally above 80%, but its activity is low, to achieve a conversion rate of 60%, the reaction temperature is generally above 400°C

Method used

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  • Hydrocracking catalyst for Tscher-Topsch synthesis of heavy wax, its preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Weigh 26.0g HY molecular sieve, 13.0g SAPO-11 molecular sieve, 13.0g modified alumina, mix evenly with 48.0g binder pseudo-boehmite, prepare and knead with 5% dilute nitric acid solution , dried in an oven at 100°C for 6h, calcined at 500°C for 6h and then cooled to room temperature to obtain the carrier required by the present invention.

[0029] (2) Using an aqueous solution of nickel nitrate as an impregnating solution, impregnate the solution of nickel nitrate on the formed support, and evaporate the solution to dryness at 100°C. The product was dried at 100°C for 6h, calcined at 500°C for 6h, and then cooled to room temperature to obtain the catalyst involved in the hydrocracking process of the present invention, wherein the mass percentage of each component is composed of: HY type molecular sieve 24.0wt%, 12.0 wt% of SAPO-11 molecular sieve, 12.0 wt% of modified alumina, 44.0 wt% of pseudo-boehmite, and 8.0 wt% of nickel oxide.

[0030] The reaction condition...

Embodiment 2

[0033] (1) Weigh 13.0g HY molecular sieve, 13.0g SAPO-11 molecular sieve, 26.0g amorphous silicon magnesium, mix evenly with 48.0g binder pseudo-boehmite, prepare and knead with 5% dilute nitric acid solution , dried in an oven at 110°C for 5h, calcined at 550°C for 5h and then cooled to room temperature to obtain the carrier required by the present invention.

[0034] (2) Using an aqueous solution of nickel carbonate as an impregnating solution, impregnate the solution of nickel carbonate on the formed support, and evaporate the solution to dryness at 110°C. The product was dried at 110°C for 5h, roasted at 550°C for 5h and then cooled to room temperature to obtain the catalyst involved in the hydrocracking process of the present invention, wherein the mass percentage of each component is composed of: HY type molecular sieve 12.0wt%, 12.0 wt% of SAPO-11 molecular sieve, 24.0 wt% of amorphous silicon magnesium, 44.0 wt% of pseudo-boehmite, and 8.0 wt% of nickel oxide.

[0035...

Embodiment 3

[0038] (1) Weigh 13.0g HY molecular sieve, 26.0g SAPO-11 molecular sieve, 13.0g amorphous silica-alumina, mix with 48.0g binder pseudo-boehmite evenly, prepare with 5% dilute nitric acid solution, knead and form , dried in an oven at 120°C for 4h, calcined at 600°C for 4h and then cooled to room temperature to obtain the carrier required by the present invention.

[0039] (2) Using an aqueous solution of nickel nitrate as an impregnating solution, impregnate the solution of nickel nitrate on the formed carrier, and evaporate the solution to dryness at 120° C. The product was dried at 120°C for 4 hours, calcined at 600°C for 4 hours, and then cooled to room temperature to obtain the catalyst used in the hydrocracking process of the present invention, wherein the mass percentage of each component is: HY type molecular sieve 12.0wt%, 24.0 wt% of SAPO-11 molecular sieve, 12.0 wt% of amorphous silica-alumina, 44.0 wt% of pseudo-boehmite, and 8.0 wt% of nickel oxide.

[0040] The r...

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Abstract

The invention relates the hydrogenation-cracking catalyst used to synthesize heavy wax, comprising 10.0-24.0wt% HY molecular screen, 10.0-24.0wt% SAPO-11 molecular screen, 3.0-10.0wt% nickel oxide, 3.0-10.0wt% nickel oxide, 0.0-15.0wt% molybdenum oxide or tungsten oxide, 10.0-24.0wt% amorphous oxide compound and 5.0-65.0wt% diaspore. The method comprises preparing carrier and dipping active component. The catalyst has the advantages of good catalytic cracking property, high diesel selective, and good isomerization property.

Description

technical field [0001] The invention belongs to a hydrocracking catalyst and its preparation method and application, in particular to a hydrocracking catalyst suitable for Fischer-Tropsch synthesis of heavy wax, its preparation method and application. technical background [0002] In recent years, with the shrinking of the world's crude oil resources and the rise of crude oil prices, the energy consumption structure is gradually changing from oil-dependent to oil, coal and natural gas diversification, thus making coal / natural gas indirect liquefaction technology a liquid fuel in the post-petroleum industry era. One of the most attractive avenues. However, my country has a resource structure with more coal and less oil. Converting coal into engine fuel through F-T synthesis is one of the important ways to solve my country's current fuel shortage and clean and efficient use of coal resources. [0003] Hydrocracking technology is an important oil processing method. Its product...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G47/20
Inventor 任杰卢银花李永旺刘平王雪峰侯潇云
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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