Bulk phase hydrotreating catalyst preparation method

A hydrogenation treatment and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of affecting the distribution of hydrogenation active metals and increasing the pores of catalysts problems such as low capacity and active center density, and achieve the effects of improving ultra-deep hydrodesulfurization performance, reasonable catalyst pore structure, and high active site density

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

[0045] 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 and aluminum chloride solution in clean water respectively to prepare a mixed solution B. In mixed solution B, WO 3 The weight concentration is 39g / L, Al 2 o 3The weight concentration is 13g / L. Add ammonia water with a concentration of 10wt% to solution A under stirring, keep the gelling temperature at 60°C, control the pH value at the end of the solution at 7.8, and control the gelling time at 60 minutes to generate slurry I containing nickel and aluminum precipitates. Add 500mL of clean water into the reaction tank, add ammonia water with a concentration of 10wt% and solution B into the reaction tank concurrently, keep the gelling temperature at 60°C, and control the pH value at 7.8 during the concurrent gelation rea...

Embodiment 2

[0047] 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 and ammonium metatungstate. Add ammonia water with a concentration of 12wt% to solution A under stirring, keep the gelling temperature at 45°C, control the pH value at 8.0 at the end, and control the gelling time at 50 minutes to generate slurry I containing nickel and aluminum precipitates. Add 600mL of clean water into the reaction tank, add ammonia water with a concentration of 12wt% and solution B into the reaction tank concurrently, keep the gelling temperature at 50°C, and control the pH value at 7.6 during the concurrent gelation reaction process, and control the gelation time At 60 minutes, slurry II containing tungste...

Embodiment 3

[0049] 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 and ammonium metatungstate. Add ammonia water with a concentration of 8wt% to solution A under stirring, keep the gelling temperature at 50°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 8wt% and solution B into the reaction tank concurrently, keep the gelling temperature at 55°C, and control the pH value at 8.0 during the concurrent gelation reaction process, and control the gelation time At 60 minutes, slurry II containing tungsten and aluminum precipitates was fo...

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Abstract

The invention discloses a preparation method of a bulk phase hydrogenation treatment catalyst. The composition of the catalyst includes hydrogenation active metal components W, Ni and Mo, alumina, and its preparation method is to prepare nickel and aluminum precipitate slurry I by acid precipitation method; adopt co-current precipitation method to prepare tungsten and aluminum precipitate slurry II, mix the two, after aging, hydrothermal treatment with water vapor and add urea, then combine with MoO 3 After beating and mixing evenly, soaking in the solution containing organic compounds, and then forming and other steps to prepare the hydrogenation treatment catalyst. The catalyst is particularly suitable for application in ultra-deep hydrodesulfurization and denitrogenation reactions of diesel fractions.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation treatment 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 temper...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J35/10C10G45/08
Inventor 王海涛徐学军刘东香冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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