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Low-cost hydrocarbon steam-reforming catalyst and preparation method thereof

A catalyst and low-cost technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as inability to achieve recycling and reuse, and achieve simple preparation methods Easy, effective, easy-to-achieve results

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 hydrocarbon steam-reforming catalyst and preparation method thereof
  • Low-cost hydrocarbon steam-reforming catalyst and preparation method thereof
  • Low-cost hydrocarbon steam-reforming catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Recycled waste NiO / CaO-Al 2 o 3 After the type hydrocarbon steam reforming catalyst is screened to remove impurities and broken particles, it is cleaned with 5% dilute nitric acid. 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, wherein the NiO content was analyzed to be 16%.

[0026] Mix 2000mL of nickel nitrate solution with a concentration of 3mol / L and 2600mL of magnesium nitrate solution with a concentration of 3mol / L, and heat and stir in the reaction tank. When the temperature rises to 75°C, slowly add carbonic acid with a concentration of 3mol / L. Sodium solution 5000mL for precipitation; after the precipitation is complete, filter and wash with deionized water until no NO 3 - 、Na + residual. The washed filter cake was dried at 120°C for 12 hours and calcined at 600°C for 4 hours to obtain semi-finished product B.

[0027] Weigh 750g of raw material A, 1000g of semi-finis...

Embodiment 2

[0029] Recycled waste NiO / CaO-Al 2 o 3 After the type hydrocarbon steam reforming catalyst is screened to remove impurities and broken particles, it is washed with 5% dilute sulfuric acid. The acid-washed catalyst was dried, crushed, and ball-milled until it passed through a 280-mesh sieve to obtain raw material A, and the NiO content was analyzed to be 16%.

[0030] Mix 2000mL of nickel nitrate solution with a concentration of 3mol / L and 5000mL 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 Sodium solution 8000mL for precipitation; after the precipitation is complete, filter and wash with deionized water until there is no SO 4 2- , NO 3 - 、Na + residual. The washed filter cake was dried at 120°C for 12 hours and calcined at 600°C for 4 hours to obtain semi-finished product B.

[0031] Weigh 500g of raw material A, 1000g of ...

Embodiment 3

[0033] Recycled waste NiO / CaO-Al 2 o 3 After the type hydrocarbon steam reforming catalyst is screened to remove impurities and broken particles, it is washed with 8% dilute hydrochloric acid. The acid-washed catalyst was dried, crushed, and ball-milled until it passed through a 280-mesh sieve to obtain raw material A, wherein the NiO content was analyzed to be 15%.

[0034] Mix 2000mL of nickel nitrate solution with a concentration of 3mol / L and 7000mL of magnesium nitrate solution with a concentration of 3.5mol / L, heat and stir in the reaction tank, and when the temperature rises to 75°C, slowly add the solution with a concentration of 3.5mol / L 8000mL of sodium carbonate solution for precipitation; 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 130°C for 10 hours and calcined at 650°C for 6 hours to obtain semi-finished product B.

[0035] Weigh 250g of raw m...

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Abstract

The invention belongs to the technical field of hydrocarbon steam-reforming hydrogen production, relates to a low-cost hydrocarbon steam-reforming catalyst and a preparation method thereof. According to the preparation method, waste nickel hydrocarbon steam-reforming catalysts are utilized for preparing a novel catalyst in a low cost manner, recycled waste catalysts are preprocessed, all the catalysts accordant with the requirements can be recycled by utilizing a coprecipitation-wet mixing method, and a NiO / CaO-Al2O3 type catalyst is prepared after the catalysts are subjected to steam curing after-treatment and is suitable for high-class hydrocarbon steam-reforming hydrogen production; the use effect of the recycled the waste catalysts is remarkable, more than 95% of catalysts accordant with the requirements can be recycled, then 10-20% of production cost can be lowered, not only can waste catalysts be effectively recycled, the preparation cost of the catalyst is lowered, but also the environmental pollution caused by waste residues can be eliminated, the physical and chemical properties, activity and activity stability of the catalyst are similar to the physical and chemical properties, activity and activity stability of the catalyst prepared by utilizing a conventional method, and the preparation method is simple and feasible and is easy to implement.

Description

technical field [0001] The invention belongs to the technical field of hydrocarbon steam reforming hydrogen production, and relates to a low-cost hydrocarbon steam reforming catalyst and a preparation method thereof. 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 nickel oxide and Al which still have high application value by electric melting method or chemical method. 2 o 3 The re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/94B01J23/83C01B3/40
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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