Preparation method for hydrocracking catalyst containing heteropoly acid

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problem that hydrogenation activity and cracking cannot be well coordinated , Macromolecular compounds cannot pass through the pores of the catalyst, and the distribution of hydrogenation active metals is not easy to control, etc., to achieve good performance, high performance, and good product quality.

Active Publication Date: 2015-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method improves the pore structure of the catalyst and the dispersion of active metals by utilizing the release of gas during the calcination process, but it does not fundamentally solve the problem that the distribution of active metals generated during precipitation is not easy to control
[0007] CN1927461A, CN101108359A, CN201110350795.5, etc. disclose methods for preparing hydrocracking catalysts. The catalysts contain heteropolyacids. These preparation methods mainly use the impregnation method after preparing the carrier to obtain hydrogenation components, and finally impregnate the heteropolyacids. Both the hydrogen component and the heteropoly acid are obtained by impregnation, which is easy to block the pores of the catalyst, resulting in the inability of macromolecular compounds to pass through the pores of the catalyst, which affects the hydrogenation performance of the catalyst
The co-precipitation method adopted above will make the distribution of different hydrogenation active metals difficult to control, thereby affecting the distribution of different hydrogenation active metals and the interaction between different hydrogenation active metals and between the active metal and the carrier, so that the hydrogenation Hydrogen activity and cracking cannot be well coordinated, which ultimately affects the hydrocracking performance of the catalyst

Method used

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  • Preparation method for hydrocracking catalyst containing heteropoly acid
  • Preparation method for hydrocracking catalyst containing heteropoly acid
  • Preparation method for hydrocracking catalyst containing heteropoly acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 550 ml of nickel chloride solution containing NiO of 50 g / L, containing Al 2 o 3 450 ml of 130g / L aluminum chloride solution, containing ZrO 2 130 milliliters of 110 g / L zirconium oxychloride solution was mixed in solution tank 1, diluted with 1000 milliliters of clean water, and configured as solution A. will contain WO 3 980ml of 90g / L ammonium metatungstate and containing Al 2 o 3 420 milliliters of 130g / L aluminum chloride solution, mixed in the solution tank 2, add 1000 milliliters of clean water for dilution, add 620 milliliters of SiO containing 2 100g / L dilute water glass solution, configure solution B. Add ammonia water to solution A under stirring, keep the gel forming temperature at 50°C, control the pH value at 7.6 at the end, control the gel forming time at 60 minutes, and generate slurry I containing nickel and aluminum precipitates. Add 1000mL of clean water into the reaction tank, add ammonia water and solution B into the reaction tank concurrent...

Embodiment 2

[0037] According to the method of embodiment 1, press the component content ratio of catalyst B in table 1, add nickel nitrate, titanium chloride, aluminum nitrate solution in dissolving tank 1, prepare working solution A, add nitric acid in dissolving tank 2 Aluminum, ammonium metatungstate and dilute water glass prepare working solution B, wherein dilute water glass contains SiO 2 480 ml of dilute water glass solution of 110 g / L. Add ammonia water to solution A under stirring, keep the gel forming temperature at 40°C, control the pH value at the end of the solution at 7.8, and control the gel forming time at 50 minutes to generate slurry I containing nickel and aluminum precipitates. Add 1000mL of clean water into the reaction tank, add ammonia water and solution B into the reaction tank concurrently, keep the gelling temperature at 50°C, and control the pH value during the gelling reaction process at 7.6, and control the gelling time at 50 minutes. A slurry II containing t...

Embodiment 3

[0039] According to the method of embodiment 1, press the component content ratio of catalyst C in table 1, add nickel chloride, aluminum chloride solution in dissolving tank 1, prepare working solution A, add aluminum chloride in dissolving tank 2 , ammonium molybdate, and dilute water glass to prepare working solution B, wherein the dilute water glass contains SiO 2 540 ml of 100 g / L dilute water glass solution. Add ammonia water to solution A under stirring, keep the gel forming temperature at 60°C, control the pH value at 8.0 at the end, control the gel forming time at 50 minutes, and generate slurry I containing nickel and aluminum precipitates. Add 1200mL of clean water into the reaction tank, add ammonia water and solution B into the reaction tank concurrently, keep the gelling temperature at 65°C, and control the pH value at 8.0 during the gelling reaction process, and control the gelling time at 60 minutes , generating slurry II containing tungsten, silicon, and alum...

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Abstract

The invention discloses a preparation method for a hydrocracking catalyst containing heteropoly acid. The method comprises the following steps: preparing a nickel-aluminum precipitate with larger grain by using a regular addition method; preparing a tungsten-silicon-aluminum precipitate with smaller grain by using a parallel flow method; mixing the two precipitates and carrying out hydrothermal treatment; then carrying out impregnation with a heteropoly acid solution; and carrying out molding and calcination so as to prepare the hydrocracking catalyst. The method enables the catalyst to have high using performance by adjusting distribution of a hydrogenation active metal, heteropoly acid, alumina and amorphous silicon aluminum and promoting coordination and cooperation among the above-mentioned substances.

Description

technical field [0001] The invention relates to a preparation method of a hydrocracking catalyst for treating heavy hydrocarbons. Background technique [0002] At present, the shortage of petroleum resources in the world, the quality of crude oil is deteriorating year by year, the demand for middle distillate oil is increasing, the upgrading of petrochemical products and the stricter environmental regulations have greatly promoted the transformation of heavy oil into lighter products, and constituted an accelerated development of hydrogenation. The power of technology. The main features of hydrocracking technology are strong adaptability of raw materials, high selectivity of product plans and target products, good product quality and high added value, and can directly produce a variety of high-quality petroleum products (such as gasoline, jet fuel, diesel oil, lubricating oil base Oil, etc.) and high-quality chemical raw materials (such as benzene, toluene, xylene, ethylene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J31/34C10G47/04
Inventor 刘东香王海涛徐学军冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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