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Low-cost hydrogen production catalyst and preparation method thereof

A catalyst and low-cost technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve problems such as inability to achieve recycling and reuse, and achieve elimination of waste residue pollution , the effect is remarkable, the effect of reducing the production cost

Active Publication Date: 2014-01-15
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even so, this invention is only applicable to the catalyst prepared by impregnating the active component after the carrier is prepared first, but the catalyst prepared by the co-precipitation process in the upper section cannot be recovered and reused

Method used

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  • Low-cost hydrogen production catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Recycled waste NiO / Al 2 o 3 After the type natural gas steam-to-catalyst is screened to remove impurities and broken particles, it is blown with compressed air to remove the powder and cleaned with dilute nitric acid with a mass concentration of 5%. The acid-washed catalyst was dried, crushed, and ball-milled until all of it passed through a 280-mesh sieve to obtain raw material A.

[0029] Mix 2000mL of nickel nitrate solution with a concentration of 3mol / L and 2500mL of magnesium nitrate solution with a concentration of 3mol / L, heat and stir in the reaction tank, and when the temperature rises to 75°C, slowly add carbonic acid with a concentration of 3mol / L 5000mL of sodium solution was used for precipitation, and 310g of raw material A was added with stirring during the precipitation process. After the precipitation is complete, filter and wash with deionized water until there is no NO3 - 、Na + residual. The washed filter cake was dried at 120°C for 12 hours and...

Embodiment 2

[0032] Recycled waste NiO / Al 2 o 3 After the type hydrocarbon steam-to-catalyst is screened to remove impurities and broken particles, the powder is blown off with compressed air and washed with dilute sulfuric acid with a mass concentration of 8%. The acid-washed catalyst was dried, crushed, and ball-milled until all of it passed through a 280-mesh sieve to obtain raw material A.

[0033] Mix 2000mL of nickel nitrate solution with a concentration of 3mol / L and 3000mL of magnesium nitrate solution with a concentration of 3mol / L, heat and stir in the reaction tank, and when the temperature rises to 75°C, slowly add carbonic acid with a concentration of 3mol / L 5500mL of sodium solution was used for precipitation, and 180g of raw material A was added with stirring during the precipitation process. After the precipitation is complete, filter and wash with deionized water until there is no SO 4 - , NO 3 - 、Na + residual. The washed filter cake was dried at 120°C for 12 hour...

Embodiment 3

[0036] Recycled waste NiO / Al 2 o 3 After the type hydrocarbon steam-to-catalyst is screened to remove impurities and broken particles, it is blown with compressed air to remove the powder and washed with dilute hydrochloric acid with a mass concentration of 8%. The acid-washed catalyst was dried, crushed, and ball-milled until all of it passed through a 280-mesh sieve to obtain raw material A.

[0037]Mix 1000g nickel nitrate hexahydrate crystals with 5000g magnesium nitrate hexahydrate crystals and add 5000mL deionized water to dissolve. Pour the above mixed solution into a reaction tank, heat and stir. When the temperature rises to 70°C, slowly add 8000 mL of sodium carbonate solution with a concentration of 3 mol / L for precipitation. During the precipitation, stir and add 500 g of raw material A. After the precipitation is complete, filter and wash with deionized water until there is no Cl - , NO 3 - 、Na + residual. The washed filter cake was dried at 120°C for 12 ho...

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Abstract

The invention belongs to the technical field of hydrogen production realized trough hydrocarbon steam conversion, relates to a preparation method of a low-cost hydrogen production catalyst and particularly relates to a method for preparing a new catalyst by recovering waste nickel hydrocarbon steam conversion catalyst. The method can be used for preparing the new catalysts of a same type by recycling a waste catalyst as a part of raw materials. The method disclosed by the invention can not only be used for completely recovering the nickel oxide contained in the catalyst, but also be used for reusing the Al2O3 contained in a carrier, thereby effectively recycling the waste catalyst, reducing the preparation cost of the catalyst and eliminating the environment pollution caused by waste residues. The catalyst prepared through the method is suitable for a natural gas steam conversion catalyst and is equivalent to an industrial catalyst prepared through the conventional method in physical and chemical property, activity and activity stability.

Description

technical field [0001] The invention belongs to the technical field of hydrocarbon steam reforming hydrogen production, and relates to a low-cost hydrogen production catalyst and a preparation method thereof, in particular to a method for preparing a new catalyst by recovering waste nickel-based hydrocarbon steam reforming catalysts. Background technique [0002] In the hydrogen production, synthetic ammonia and methanol industries, a catalyst for converting hydrocarbon raw materials and water vapor under high temperature conditions is widely used. This type of catalyst uses nickel as the active component, and the carrier mostly uses Al 2 o 3 or calcium aluminate cement. Due to the high cost of this type of catalyst, it has significant economic and environmental benefits to process the used spent catalyst and recycle a large amount of heavy metal nickel contained therein. At present, the recovery method commonly used in industry is the recovery of metal nickel, residual ni...

Claims

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Application Information

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IPC IPC(8): B01J23/755C01B3/40
CPCY02P20/52Y02P20/584
Inventor 姜建波王昊薛红霞白志敏赵庆鲁齐焕东江秀玲梁卫忠余汉涛
Owner CHINA PETROLEUM & CHEM CORP
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