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Preparation method for hydrofining catalyst

A hydrofinishing and catalyst technology, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. Easy to accumulate and other problems

Active Publication Date: 2019-07-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bulk phase catalyst obtained by this method has a high content of active metals in the surface phase, which is easy to accumulate excessively, thereby affecting the morphology and dispersion of the stacked layer of the active phase
[0011] In the existing co-precipitation method for preparing bulk catalysts, different precipitation methods and gelation conditions will have a great impact on the coordination mode of the catalytic active metal, the distribution of the hydrogenation active metal and the interaction between different hydrogenation active metals. The effect of the sulfided bulk catalyst will also lead to MoS 2 / WS 2 There is a marked difference in the shape of the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Nickel chloride, ammonium metatungstate, sodium cetylbenzenesulfonate are added respectively to dissolving tank 1 that deionized water is housed, and mixed solution A is prepared, and the weight concentration of Ni in NiO in mixed solution A is 28g / L, W to WO 3 The weight concentration of meter is 27g / L, and the weight concentration of sodium cetylbenzenesulfonate is 38g / L. Add ammonium metatungstate, ammonium molybdate, and aluminum chloride into the dissolution tank 2, mix well, add polyethylene glycol (molecular weight 6000), and prepare mixed solution B. In solution B, W was replaced by WO 3 The weight concentration of Mo is 30g / L, Mo is MoO 3 The weight concentration is 36g / L, Al is expressed as Al 2 o 3 The weight concentration of meter is 26g / L, and the weight concentration of polyethylene glycol is 98g / L. Deionized water is added in the reaction tank, and the weight concentration is based on Al 2 o 3 Add 30g / L sodium metaaluminate solution and mixed solu...

Embodiment 2

[0053] According to the method of Example 1, according to the component content ratio of catalyst B in Table 1, add deionized water, nickel chloride, ammonium metatungstate, zirconium oxychloride in the dissolution tank 1, mix evenly, prepare and mix Solution A, add deionized water, aluminum nitrate, ammonium metatungstate, ammonium molybdate into the dissolution tank 2, mix well, add polyethylene glycol (molecular weight is 8000), prepare mixed solution B, the weight of polyethylene glycol The concentration is 110g / L. Add deionized water and sodium lignosulfonate to the reaction tank, the amount of sodium lignosulfonate added is based on the volume of mixed solution A, and the weight concentration of sodium lignosulfonate is 28g / L. Convert the weight concentration to Al 2 o 3 42g / L sodium metaaluminate solution and mixed solution A are added into the reaction tank in parallel flow, the gelling temperature is kept at 60°C, the pH value is controlled at 8.0 during the co-flow...

Embodiment 3

[0055] According to the method of Example 1, according to the component content ratio of the catalyst C in Table 1, nickel nitrate, ammonium metatungstate, deionized water are added to the dissolution tank 1, mixed evenly, the mixed solution A is prepared, and the solution A is added to the dissolution tank 2. Add ammonium metatungstate, ammonium molybdate, aluminum chloride, and deionized water, mix well, add polyethylene glycol (molecular weight: 8000), and prepare mixed solution B. The weight concentration of polyethylene glycol is 105g / L . Add deionized water and sodium α-alkenyl sulfonate (the number of C atoms is 16) into the reaction tank. The amount of sodium α-alkenyl sulfonate is based on the volume of mixed solution A. Sodium α-alkenyl sulfonate The weight concentration is 40g / L. Convert the weight concentration to Al 2 o 3 35g / L sodium metaaluminate solution and mixed solution A are added into the reaction tank in parallel flow, the gelling temperature is kept a...

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Abstract

The invention discloses a preparation method for a hydrofining catalyst. The hydrofining catalyst is prepared by the following steps: firstly, a mixed solution A containing Ni and W and a sodium metaaluminate solution flow in parallel for a gel forming reaction, wherein a surfactant is added before and / or during the reaction, and obtained slurry is aged; polyethylene glycol, ammonia water and a mixed solution B containing W, Mo and Al are added to the aged slurry in parallel flow for a gel forming reaction, and ageing is performed again; steps including drying, forming, washing, drying, roasting and the like are performed, and the hydrofining catalyst is prepared. The catalyst can be applied to ultra-deep hydrodesulfurization and denitrogenation reactions of diesel fractions, and has higher hydrodesulfurization and hydrodenitrogenation reaction activities, especially for treating diesel raw materials with high nitrogen and high sulfur content.

Description

technical field [0001] The invention relates to a method for preparing a hydrorefining catalyst, in particular to a method for preparing a bulk phase hydrorefining catalyst. Background technique [0002] At present, 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 and clean fuels. 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 temperature will lead to the color of the product. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888C10G45/08
CPCB01J23/8885C10G45/08C10G2300/202
Inventor 王海涛王继锋徐学军刘东香冯小萍
Owner CHINA PETROLEUM & CHEM CORP