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Preparation method and application of ultra-deep gasoline and diesel hydrodesulfurization catalyst

A hydrodesulfurization and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, and hydrocarbon oil treatment, etc., can solve the problem of easy agglomeration of active metals, and achieve the effect of retaining gasoline octane number.

Pending Publication Date: 2021-03-12
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to overcome at least one defect (deficiency) of the above-mentioned prior art, provides a preparation method of an ultra-deep gasoline and diesel hydrodesulfurization catalyst, solves the problem that active metals are easy to agglomerate on the surface of the carrier, and improves the vulcanization rate so that the catalyst activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An ultra-deep gasoline and diesel hydrodesulfurization catalyst, the preparation method comprising the following steps:

[0030] Put 100g of melamine in a baking dish, cover the upper layer with tin foil, and under the protection of nitrogen, raise the temperature to 800°C at a rate of 10°C / min, keep it for 2 hours, and then cool down naturally to prepare a nitrogen-doped carbon material carrier;

[0031] Dissolve 3.15g of ammonium metatungstate and 1.28g of nickel nitrate in water to make an impregnation solution;

[0032] Adding the impregnating solution dropwise onto 7.5 g of the above-mentioned nitrogen-doped carbon material carrier to obtain a semi-finished catalyst;

[0033] The catalyst semi-finished product was left to stand for 12 hours, dried in an oven at 80°C, then heated at a rate of 10°C / min, and roasted at 400°C under nitrogen protection for 4 hours to obtain the ultra-deep gasoline and diesel hydrodesulfurization Catalyst NDC-1.

[0034] The contents o...

Embodiment 2

[0036] An ultra-deep gasoline and diesel hydrodesulfurization catalyst, the preparation method comprising the following steps:

[0037] Put 200g of urea in a baking dish, fix the upper layer with tin foil, and raise the temperature to 600°C at a rate of 10°C / min under the protection of nitrogen, keep it for 4 hours, and then cool down naturally to prepare a nitrogen-doped carbon material carrier;

[0038] Dissolve 3.15g of ammonium metatungstate and 1.28g of nickel nitrate in water to make an impregnation solution;

[0039] Adding the impregnating liquid onto 7.5 g of the above-mentioned nitrogen-doped carbon material carrier to obtain a semi-finished catalyst;

[0040] The catalyst semi-finished product was left to stand for 12 hours, dried in an oven at 70°C, then heated at a rate of 12°C / min, and roasted at 800°C under nitrogen protection for 2 hours to obtain the ultra-deep gasoline and diesel hydrodesulfurization Catalyst NDC-2.

[0041] The contents of tungsten oxide a...

Embodiment 3

[0043] An ultra-deep gasoline and diesel hydrodesulfurization catalyst, the preparation method comprising the following steps:

[0044] Put 100g of o-phenanthrene phenanthrene in a roasting dish, fix and cover the upper layer with tin foil, raise the temperature to 600°C at a rate of 10°C / min under the protection of nitrogen, keep it for 4 hours, and then cool down naturally to prepare a nitrogen-doped carbon material carrier;

[0045] Dissolve 3.15g of ammonium metatungstate and 1.28g of nickel nitrate in water to make an impregnation solution;

[0046] Adding the impregnating liquid onto 7.5 g of the above-mentioned nitrogen-doped carbon material carrier to obtain a semi-finished catalyst;

[0047] The catalyst semi-finished product was left to stand for 12 hours, dried in an oven at 90°C, then heated at a rate of 8°C / min, and roasted at 200°C under nitrogen protection for 8 hours to obtain the ultra-deep gasoline and diesel hydrodesulfurization Catalyst NDC-3.

[0048] Th...

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Abstract

The invention relates to the field of gasoline and diesel oil hydrodesulfurization catalysts, and provides a preparation method of an ultra-deep gasoline and diesel oil hydrodesulfurization catalyst,which comprises the following steps: by using a nitrogen-doped carbon material as a carrier, attaching an active component to the carrier by an impregnation method, performing drying and roasting to obtain the ultra-deep gasoline and diesel oil hydrodesulfurization catalyst, wherein the active component comprises a metal salt and an auxiliary metal salt. According to the invention, a nitrogen-doped carbon material is used as a carrier, and a traditional Co (Ni)-Mo (W) metal active phase is loaded to prepare the novel catalyst; compared with a Co (Ni)-Mo (W) hydrogenation catalyst commonly usedin the industry, the catalyst has the advantages that a nitrogen-doped carbon material formed by introducing N atoms with high charges and spin density into a carbon material has excellent electron donating characteristics, and the electron and morphology structures of a metal active phase can be effectively regulated and controlled through the anchoring effect and the electron donating effect, therefore, the catalyst has higher gasoline and diesel hydrogenation activity and desulfurization effect, and better reserves the octane number of gasoline.

Description

technical field [0001] The invention relates to the field of gasoline and diesel hydrogenation desulfurization catalysts, and more specifically relates to an ultra-deep gasoline and diesel hydrogenation desulfurization catalyst and its preparation method and application. Background technique [0002] Since the world's first set of technology later called "classical hydrogenation" was industrialized in Germany in 1926, the hydrogenation process has gone through nearly a century. Especially in the past fifty years, the hydrogenation process has been rapidly developed as an important means to produce more gasoline, diesel and other high-quality middle distillates. [0003] Since the successful commercial application of Co or Ni-promoted Mo or W catalysts, the space for improving catalyst activity by adjusting the active phase components has become increasingly narrow. However, related studies on hydrogenation catalyst supports have found that the surface properties of the supp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C10G45/08
CPCB01J27/24C10G45/08C10G2300/202C10G2400/02C10G2400/04
Inventor 张志华李磊周传炜黄德鑫李寅翰谢威龙曾欣怡周建泉蒋达洪王煦
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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