Hydrocracking catalyst and preparation method thereof

A cracking catalyst and hydrocracking technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problem of low active center density, small surface active metal content, and difficult distribution of hydrogenation active metals Control and other issues to achieve the effect of improving performance and interaction

Active Publication Date: 2016-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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 activity cannot be well coordinated. At the same time, the content of surface active metals in the catalyst is small and the density of active centers is low, which ultimately affects the hydrocracking performance of the catalyst.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Dissolve nickel chloride, aluminum chloride solution and zirconium oxychloride in clean water respectively to prepare mixed solution A. The weight concentration of NiO in mixed solution A is 21g / L, Al 2 o 3 The weight concentration is 5g / L, ZrO 2 The weight concentration of 5g / L. Dissolve ammonium metatungstate and aluminum chloride solution in clean water respectively, add dilute water glass solution to prepare mixed solution B, and WO in mixed solution B 3 The weight concentration is 25g / L, Al 2 o 3 The weight concentration is 18g / L, SiO 2 The weight concentration is 20g / L. Add ammonia water with a concentration of 10wt% to solution A under stirring, keep the gelling temperature at 55°C, control the pH value at the end of the solution at 7.6, and control the gelling time at 60 minutes to generate slurry I containing nickel and aluminum precipitates. Add 1000mL of clean water into the reaction tank, add ammonia water with a concentration of 10wt% and solution B i...

Embodiment 2

[0044]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 After dissolving aluminum and ammonium metatungstate in clean water, add dilute water glass to prepare working solution B. Ammonia water with a concentration of 15wt% was added to solution A under stirring, the gelling temperature was kept at 45°C, the pH value was controlled at 8.0 at the end, and the gelling time was controlled at 60 minutes to generate slurry I containing nickel and aluminum precipitates. Add 800mL of clean water into the reaction tank, add ammonia water with a concentration of 15wt% and solution B into the reaction tank in parallel, keep the gelling temperature at 50°C, and control the pH value at 8.2 during the gelling reaction process, and the gelling time It is controlled within 60 minutes to genera...

Embodiment 3

[0046] 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 1. After dissolving ammonium metatungstate in clean water, add dilute water glass to prepare working solution B. Ammonia water with a concentration of 10wt% was added to solution A under stirring, the gelling temperature was kept at 55°C, the pH value was controlled at 7.6 at the end, and the gelling time was controlled at 90 minutes to generate slurry I containing nickel and aluminum precipitates. Add 900mL of clean water into the reaction tank, add ammonia water and solution B with a concentration of 10wt% into the reaction tank concurrently, keep the gelling temperature at 45°C, and control the pH value at 8.0 during the gelling reaction process to form a gel The time is controlled at 60 minutes to generate slurry II containing t...

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PUM

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Abstract

The invention discloses a hydrocracking catalyst and a preparation method thereof. The catalyst is a bulk phase hydrocracking catalyst and comprises hydrogenation active metal components W and Ni, alumina, silicon oxide and molecular sieve, wherein a ratio of the weight content of the surface phase active metal component WO3 to the weight content of the bulk phase active metal component WO3 is 1.2:1-6.0:1, and a ratio of the weight content of the surface phase active metal component NiO to the weight content of the bulk phase active metal component NiO is 1.2:1-5.0:1. The catalyst is especially suitable for a single-stage hydrocracking technology, and has the advantages of high liquid yield and good product quality.

Description

technical field [0001] The invention relates to a hydrocracking catalyst for treating heavy hydrocarbons and a preparation method thereof. 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...

Claims

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Application Information

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IPC IPC(8): B01J29/16B01J35/10C10G47/20
Inventor 冯小萍王海涛徐学军刘东香
Owner CHINA PETROLEUM & CHEM CORP
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