Hydrorefining catalyst preparation method

A technology for hydrorefining and catalysts, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. The problem of small active metal content in the surface phase, etc., can improve the ultra-deep hydrodesulfurization performance, improve the interaction, and achieve the effect of high reactivity

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

[0010] The bulk phase hydrogenation catalyst disclosed by CN102049265A adds ammonium bicarbonate during the coprecipitation process, and the bulk phase hydrogenation catalyst disclosed by CN102451703A adds carbon dioxide during the coprecipitation process to generate carbonate or bicarbonate. It releases a certain amount of gas during the roasting process. Under the impact of the gas, the pore volume and specific surface area of ​​the catalyst are increased, so that more metal active sites are exposed on the surface of the catalyst, but this method will cause some pores to collapse. , the pore distribution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Dissolve nickel chloride and aluminum chloride solutions in clean water respectively to prepare mixed solution A. The weight concentration of NiO in mixed solution A is 19g / L, Al 2 o 3 The weight concentration is 13g / L. Dissolve ammonium metatungstate, ammonium molybdate and aluminum chloride solution in clean water respectively to prepare mixed solution B, and in mixed solution B, WO 3 The weight concentration is 39g / L, MoO 3 The weight concentration is 16g / L, Al 2 o 3The weight concentration is 13g / L. Add benzylamine and ammonia water to solution A under stirring, the molar ratio of benzylamine to active metal Ni is 0.7, the gelling temperature is kept at 60°C, the pH value is controlled at 7.8 at the end, and the gelling time is controlled at 60 minutes to generate Nickel, Aluminum Precipitate Slurry I. Add 1000mL of clean water into the reaction tank, add benzylamine, ammonia water, and solution B into the reaction tank in parallel, the molar ratio of benzylam...

Embodiment 2

[0046] According to the method of Example 1, according to the component content ratio of catalyst B in Table 1, nickel nitrate, aluminum nitrate, zirconium oxychloride solution is added to the dissolution tank 1, and the working solution A is prepared, and the solution A is added to the dissolution tank 2. Prepare working solution B with aluminum nitrate, ammonium metatungstate and ammonium molybdate. Add ethanolamine and ammonia water to solution A under stirring, the molar ratio of ethanolamine to active metal Ni is 1.5, the gelling temperature is kept at 50°C, the pH value is controlled at 8.0 at the end, and the gelling time is controlled at 50 minutes to form nickel-containing, Aluminum Precipitate Slurry I. Add 600mL of clean water into the reaction tank, add ethanolamine, ammonia water, and solution B into the reaction tank in parallel, the molar ratio of ethanolamine to active metal W is 0.5, keep the gelling temperature at 50°C, and flow the pH during the gelling reac...

Embodiment 3

[0048] According to the method for embodiment 1, press the component content ratio of catalyst C in table 1, add nickel chloride, aluminum chloride, phosphoric acid solution in dissolving tank 1, prepare working solution A, add chlorine in dissolving tank 2 Prepare working solution B with aluminum chloride, ammonium metatungstate and ammonium molybdate. Add benzylamine and ammonia water to solution A under stirring, the molar ratio of benzylamine to active metal Ni is 0.8, the gelling temperature is kept at 45°C, the pH value is controlled at 7.6 at the end, and the gelling time is controlled at 60 minutes to generate Nickel, Aluminum Precipitate Slurry I. Add 1000mL of clean water into the reaction tank, add ethanolamine and ammonia solution B into the reaction tank in parallel, the molar ratio of ethanolamine to active metal W is 0.8, the gelling temperature is kept at 55°C, and the pH value is maintained during the gelling reaction process Control it at 8.0, control the ge...

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Abstract

The present invention discloses a hydrorefining catalyst preparation method. According to the method, a nickel aluminum precipitate is prepared through a positive adding method, a tungsten, molybdenum and aluminum precipitate is prepared through a parallel flow method, an organic amine is added during any one or two above gelatinization processes, the two precipitates are mixed, aging is performed, a hydrothermal treatment is performed while urea is added, and molding and the like are performed to prepare the catalyst. According to the present invention, the prepared catalyst is particularly suitable for super deep hydrodesulfurization and denitrification reaction of diesel oil distillates, and has high hydrodesulfurization and hydrodenitrogenation activity.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation refining catalyst, in particular to a preparation method of a high-activity bulk phase hydrogenation treatment catalyst. Background technique [0002] At present, in the world, crude oil is becoming increasingly heavy and inferior, coupled with the continuous development of the world economy and increasingly stringent environmental protection regulations, it is necessary to produce a large amount of light clean fuel. The development and use of ultra-low sulfur or even sulfur-free gasoline and diesel is the trend of clean fuel development in the world today. The use of traditional hydrodesulfurization catalysts can also achieve deep desulfurization or even ultra-deep desulfurization of diesel oil by increasing the severity of the reaction, such as increasing the reaction temperature, hydrogen partial pressure or reducing the reaction space velocity, but the increase in the reaction tempera...

Claims

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Application Information

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IPC IPC(8): B01J23/888C10G45/08
Inventor 徐学军冯小萍王海涛刘东香
Owner CHINA PETROLEUM & CHEM CORP
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