Preparation method of hydrocarbon steam reforming catalyst

A catalyst and steam technology, which is applied in the field of hydrocarbon steam reforming catalyst preparation, to achieve the effect of reducing carbon deposits, uniform and fine particles, and meeting process requirements

Active Publication Date: 2021-01-01
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent adopts the precipitation method, which requires a large amount of experimental water

Method used

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  • Preparation method of hydrocarbon steam reforming catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 6g of magnesium nitrate and 6.5g of aluminum nitrate, fully mix the two salts, add 44g of urea and grind for 15 minutes, then add 4.66g of nickel nitrate and 1.74g of lanthanum nitrate and grind for 10 minutes, then move the reactant to the In a vinyl fluoride-lined crystallization kettle, react at 178°C for 12 hours to obtain a semi-finished product, add water, graphite and cellulose to shape the semi-finished product, raise the temperature to 450°C at a rate of 2°C / min in the air, and roast at a constant temperature for 2 hours. Then heat up to 750 degrees at a speed of 5° C. / min and roast for 4.5 hours to obtain a finished catalyst.

Embodiment 2

[0028] Weigh 7.4g of magnesium nitrate and 3.76g of aluminum nitrate, fully mix the two salts, add 60g of ammonium bicarbonate and grind for 25 minutes, then add 16.6g of nickel nitrate and 1.3g of cerium nitrate and grind for 20 minutes, then move the reactant to In a polytetrafluoroethylene-lined crystallization kettle, react at 185°C for 24 hours to obtain a semi-finished product, add water, graphite and paraffin to form the semi-finished product, raise the temperature to 400°C at a rate of 5°C / min in the air, and roast at a constant temperature 1.5h, then heating up to 700°C at a rate of 5°C / min and calcining for 3 hours to obtain a finished catalyst.

Embodiment 3

[0030] Weigh 11.84g of magnesium nitrate and 7.5g of aluminum nitrate, fully mix the two salts, add 72g of urea and grind for 35 minutes, then add 13.06g of nickel nitrate and 2g of cerium nitrate and grind for 20 minutes, then move the reactant to the In a vinyl fluoride-lined crystallization kettle, react at 185°C for 24 hours to obtain a semi-finished product, add water and graphite to form the semi-finished product, raise the temperature to 450°C in air at a rate of 3°C / min, and roast at a constant temperature for 1.5h, then Raise the temperature at 5°C / min to 650°C and roast for 4 hours to obtain the finished catalyst.

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Abstract

The invention belongs to the field of catalyst preparation, and specifically relates to a preparation method of a hydrocarbon steam-reforming catalyst. The preparation method comprises the following steps: (1) mixing a magnesium salt and an aluminum salt uniformly, and grinding after adding urea or ammonium bicarbonate; then adding a nickel salt and a cerium / lanthanum salt, after continuous grinding, transferring the mixture into a crystallization kettle containing a polytetrafluoroethylene lining for a crystallization reaction, and after the reaction is finished, obtaining a catalyst semi-finished product; (2) adding a molding promoter into the catalyst semi-finished product for pelleting molding, drying, and roasting to obtain the catalyst finished product. The hydrocarbon steam-reforming catalyst is high in carbon deposit performance, high in stability and long in service life, and the preparation method is simple, practicable and environmentally-friendly.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a method for preparing a hydrocarbon steam reforming catalyst. Background technique [0002] With the increasingly stringent environmental protection laws and the increasing requirements for oil quality, the demand for hydrogen in the petroleum refining industry is growing. At present, the world's industrial large-scale hydrogen production methods mainly include: hydrocarbon steam reforming hydrogen production, coal gasification hydrogen production, etc., and due to the regional limitations of coal resources, the hydrocarbon steam reforming hydrogen production process is currently used in my country's hydrogen production clearly dominates the installation. Existing hydrocarbon steam reforming catalysts are mainly classified into two types: noble metal catalysts and non-noble metal catalysts. Precious metal catalysts generally have high catalytic activity and good ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83C01B3/40
CPCB01J23/002B01J23/83B01J2523/00C01B3/40C01B2203/1241B01J2523/22B01J2523/31B01J2523/3712B01J2523/847B01J2523/3706Y02P20/52
Inventor 薛红霞王昊白志敏姜建波赵庆鲁齐焕东余汉涛梁卫忠
Owner CHINA PETROLEUM & CHEM CORP
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