Hydrorefining catalyst and preparation method thereof

A hydrogenation refining and catalyst technology, which is applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, refined hydrocarbon oils, etc., can solve the problems of affecting the distribution of hydrogenation active metals, increasing the pore volume of catalysts, and low active center density. Improve 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

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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

[0046] 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 3 The weight concentration is 13g / L. Add ammonia water with a concentration of 10% (weight) 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 1000mL of clean water into the reaction tank, add ammonia water with a concentration of 10% (by weight) and solution B into the reaction tank in parallel, keep the gelling tempe...

Embodiment 2

[0048] 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 ammonia water with a concentration of 8% (weight) to solution A under stirring, keep the gelling temperature at 50°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 8% (by weight) and solution B into the reaction tank in parallel, keep the gelling temperature at 55°C, and control the pH value at 7.8 during the gelling reaction process. The glue time is controlled at 60 minutes to genera...

Embodiment 3

[0050] 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 ammonia water with a concentration of 18% (weight) to solution A under stirring, keep the gelling temperature at 45°C, control the pH value at 7.6 at the end, 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 18% (weight) and solution B into the reaction tank in parallel, keep the gelling temperature at 50°C, and control the pH value at 8.0 during the gelling reaction process. The glue time is controlled at 60 minutes to generate slurry II containing tungsten, molybdenum and ...

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Abstract

The present invention discloses a hydrorefining catalyst and a preparation method thereof. The catalyst is a bulk phase hydrorefining catalyst, and comprises hydrogenation active metal components such as W, Ni and Mo, a microporous and mesoporous composite molecular sieve and alumina, wherein the epiphase active metal content is high, the activity site density is large, the active metal dispersion is uniform, the coordinated matching between the active metals is good, the active metal utilization rate is high, the catalyst pore structure is reasonable, the mechanical strength is high, and the hydrorefining catalyst is particularly suitable for ultra-deep hydrodesulfurization and denitrification reactions of diesel oil distillates, and has high hydrodesulfurization and hydrodenitrogenation activities.

Description

technical field [0001] The invention relates to a hydrogenation refining catalyst and a preparation method thereof, in particular to a high-activity bulk phase hydrogenation treatment catalyst and a preparation method thereof. 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 th...

Claims

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Application Information

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IPC IPC(8): B01J29/80C10G45/12
Inventor 徐学军冯小萍王海涛刘东香
Owner CHINA PETROLEUM & CHEM CORP
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