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Palygorskite load nickel base biomass tar oil recapitalization hydrogen manufacturing catalyzer and preparation method thereof

A palygorskite and catalyst technology, which is applied in the field of nickel-based biomass tar steam reforming hydrogen production catalyst and its preparation field, can solve the problems of easy carbon deposition, high cost, low low temperature activity, etc., and achieves low price and water-gas reaction. Increase and promote the effect of tar cracking

Inactive Publication Date: 2008-05-07
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing catalysts have the disadvantages of low low temperature activity, easy carbon deposition and high price.

Method used

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  • Palygorskite load nickel base biomass tar oil recapitalization hydrogen manufacturing catalyzer and preparation method thereof
  • Palygorskite load nickel base biomass tar oil recapitalization hydrogen manufacturing catalyzer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Laboratory prepares 15 grams of catalyst (35wt%, NiO) formula:

[0021] Raw material type

example 2

[0023] Partially shaped catalyst (12wt%, NiO) recipe:

[0024] Raw material type

Palygorskite

nickel nitrate

Ferric nitrate

Potassium hydroxide

starch

weight / gram)

125

48.68

70.26

52.86

5

[0025] The steam reforming of tar by pyrolysis of fixed bed apricot kernel was used as the catalyst activity evaluation experiment, and compared with the commercial light oil steam reforming hydrogen production catalyst Z409. The comparison results show that the self-made Ni-Fe / palygorskite catalyst has significantly better catalytic effect than the commercial Z409 catalyst at 500 °C, and the self-made catalyst has significantly better anti-coking deactivation ability than the Z409 catalyst at 600 °C, although the initial activity is the same.

[0026] Evaluation conditions and results:

[0027] Tar intake: 1.1ml / h; N 2 : 44ml / min; catalyst: 2.0g; water-carbon ratio (molar ratio): 4.3.

[0028] Table 1: Com...

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Abstract

The invention discloses nickel-based catalyst taking a palygorskite as the carrier and a preparation method thereof, according to the weight percentage, the content of nickel oxide is 1 to 4 percent, ferric oxide is 5 to 20 percent, and potassium oxide is 1 to 10 percent. The nickel and the iron are supported onto the surface of the palygorskite in a way of coprecipitate adsorbing, and the catalyst is filtered, shaped, dried and calcined to obtain the finished catalyst. Under the operation condition of atmospheric pressure and 480 to 650 DEG C reaction temperature, in a fixed bed reactor, the gas production and the lytic rate of the pyrolytic tar are greatly improved, compared with the catalyst used for converting the commercial light oil vapour for hydrogen production, the prepared catalyst has the advantages of low cost, good low-temperature activity, easiness of restoration and strong anti-carbon deposition capability. The invention can be widely suitable for the hydrogen production from steam reforming of various types of paraffin in the chemical field and the chemical industry field.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry, and relates to a catalyst and preparation technology suitable for the catalytic reforming process of tar in the middle and downstream of the biomass gasification process or the hydrogen production process of direct steam reforming of biomass oil, especially the catalyst with palygorskite as the carrier Nickel-based biomass tar steam reforming hydrogen production catalyst and preparation method thereof Background technique [0002] With the depletion of fossil energy and the deterioration of the global environment, biomass as a renewable energy has attracted more and more attention. Among them, biomass gasification hydrogen production technology has become a very promising technology because it combines the advantages of renewable energy and clean energy carrier (hydrogen energy). However, the generation of tar is unavoidable in the gasification process. Tar condensation and accumulat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/78B01J23/755B01J21/16C01B3/26
Inventor 徐绍平于建华杨小芹袁红艳刘淑琴
Owner DALIAN UNIV OF TECH
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