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Reformed pre-hydrogenation catalyst and preparation method thereof

A catalyst and pre-hydrogenation technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of low catalytic efficiency and weak adsorption capacity of catalysts, Achieve the effects of environmental protection, energy saving, and catalytic efficiency improvement

Active Publication Date: 2013-06-12
SHENYANG SANJUKAITE CATALYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the active metal crystal form of the hydrogenation catalyst in the prior art has very weak adsorption capacity to the reaction raw materials, resulting in low catalytic efficiency of the catalyst; Strong, catalytically efficient reforming prehydrogenation catalyst, and method for preparing same

Method used

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  • Reformed pre-hydrogenation catalyst and preparation method thereof
  • Reformed pre-hydrogenation catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] (1) After dry mixing 100g of alumina and 3g of amorphous FeOOH, add 25g of attapulgite and 20g of water, mix uniformly and knead into 1×4cm strips, and dry the strips at 90℃ for 1.5h to obtain 128g carrier;

[0043] (2) Add 12.8g of water to 2.56g of nickel nitrate, 1.28g of cobalt nitrate and 10.24g of ammonium metatungstate to mix to obtain a Ni-Co-W impregnation solution, and place the prepared carrier in the Ni-Co-W impregnation solution Impregnated for 5 hours, and then dried at 60° C. for 3 hours to obtain reforming prehydrogenation catalyst 1.

[0044] The reforming prehydrogenation catalyst 1 contains 5wt% NiO, 4wt% CoO, and 25wt% WO 3 , 6wt% amorphous FeOOH and 60wt% alumina.

Embodiment 2

[0046] (1) After dry mixing 100g pseudo-boehmite and 10g amorphous FeOOH, add 60g sesame powder and 20g water, mix uniformly and knead into 1×4cm strips, dry the strips at 60℃ for 3h, Get 150g of carrier;

[0047] (2) Add 60 g of water to 15 g of nickel sulfate, 12 g of cobalt sulfate and 67.5 g of ammonium tungstate to obtain a Ni-Co-W impregnation solution, and immerse the prepared carrier in the Ni-Co-W impregnation solution for 1.5 hours, Then, it was dried at 90°C for 1.5 hours to obtain a reforming prehydrogenation catalyst 2.

[0048] The reforming prehydrogenation catalyst 2 contains 9wt% NiO, 7wt% CoO, and 40wt% WO 3 , 4wt% amorphous FeOOH and 40wt% alumina.

Embodiment 3

[0050] (1) After dry mixing 100g of boehmite and 6g of amorphous FeOOH, add 40g of nitric acid to mix uniformly and knead into 1×4cm strips, and dry the strips at 80℃ for 2h to obtain 100g carrier;

[0051] (2) Add 20g of water to 5g of nickel chloride, 6g of cobalt acetate and 30g of sodium tungstate and mix to obtain a Ni-Co-W impregnation solution. The prepared carrier is immersed in the Ni-Co-W impregnation solution for 3h, then After drying at 70°C for 2.5 hours, a reforming prehydrogenation catalyst 3 was obtained.

[0052] The reforming pre-hydrogenation catalyst 3 contains 2wt% NiO, 1wt% CoO, and 28wt% WO 3 , 10wt% amorphous FeOOH and 59wt% alumina.

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Abstract

The invention discloses a reformed pre-hydrogenation catalyst which comprises the following components: 2-9wt% of NiO, 1-7wt% of CoO, 15-40wt% of WO3 active component, 40-60wt% of an alumina carrier and 3-10wt% of amorphous FeOOH assistant. The preparation method of the reformed pre-hydrogenation catalyst comprises the steps of: (1) dry-mixing aluminum oxide or an aluminum oxide lead compound with an amorphous FeOOH or regenerated amorphous FeOOH waste desulfurizing agent, subsequently adding into a binder to be kneaded and shaped, and further being dried to obtain the carrier; and (2) adding water into a soluble nickel salt, a soluble cobalt salt and a soluble tungsten salt and mixing up so as to obtain a Ni-Co-W steeping liquid, steeping the carrier into the Ni-Co-W steeping liquid and drying so as to obtain the reformed pre-hydrogenation catalyst. The amorphous FeOOH in the hydrogenation catalyst can adjust and control an active metal into an amorphous structure, so that the absorption of the active metal to a reactant is improved, and furthermore the activity of the catalyst is improved.

Description

Technical field [0001] The invention relates to a reforming prehydrogenation catalyst and a preparation method thereof, and belongs to the technical field of hydrogenation catalysis. Background technique [0002] Catalytic reforming is based on C 6 ~C 11 The distillate oil is the reforming raw material, and the molecular structure of the hydrocarbons is rearranged through the hydrogen catalytic reaction to produce the reformate rich in aromatic hydrocarbons and the process of by-product hydrogen. The reformed feedstock contains a large amount of organic sulfur and organic nitrogen impurities, which are likely to cause the reforming catalyst to be poisoned. Therefore, before catalytic reforming, the reformed feedstock needs to be pre-hydrogenated to remove organic sulfur and organic nitrogen impurities. [0003] The commonly used reforming and pre-hydrogenation catalysts are prepared by using metals of Group VIB and Group VIII as active components, using alumina or modified alumina ...

Claims

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Application Information

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IPC IPC(8): B01J23/888C10G45/08
Inventor 陈玲玲赵素云谢红张媛张婷单鸿飞张楠李博迟莹
Owner SHENYANG SANJUKAITE CATALYST
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