Method for preparing hydrogen by utilizing waste biomass

A waste biomass and biomass technology, applied in the manufacture of combustible gas, chemical instruments and methods, and catalytic treatment of combustible gas, can solve the problems of high energy consumption, high reaction temperature, and high pressure in the process, and reduce the reaction temperature , Simple preparation and low energy consumption

Inactive Publication Date: 2012-09-05
北京雷恩新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology involves making use of waste biofuel (bioclue) instead of producing pure H2. Using this method reduces harmful emissions from fossil fuel sources while improving economics by generating more valuable products like methane or ethanol through processes that are simpler than existing methods such as pyrolysis. Additionally, utilizing both steps of gasifying and low-thermal shifting treatments allows for efficient processing without requiring expensive equipment. Overall, these technical results lead to improved efficiency, reduced cost, increased productivity, and enhanced greenhouse gases benefits.

Problems solved by technology

The technical problem addressed in this patents relates to improving efficient and cost-effective ways of generating useful products like fuel gases (H2) that could replace current fossile and lignite based processes while reducing environmental impacts associated with these conventional techniques.

Method used

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  • Method for preparing hydrogen by utilizing waste biomass
  • Method for preparing hydrogen by utilizing waste biomass
  • Method for preparing hydrogen by utilizing waste biomass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1. Preparation of catalyst

[0053] 1) Preparation of the first catalyst

[0054] Sodium carbonate and lanthanum nitrate are mechanically mixed to obtain the first catalyst, and the molar ratio of sodium carbonate and lanthanum nitrate in the first catalyst is 16:1;

[0055] 2) Preparation of the second catalyst

[0056] Sodium carbonate, nickel nitrate, and lanthanum nitrate are mechanically mixed to obtain a second catalyst, and the molar ratio between sodium carbonate, nickel nitrate and lanthanum nitrate in the second catalyst is 16:10:1;

[0057] 3) Preparation of copper-zinc-aluminum-precious metal rare earth composite catalyst

[0058] 181.2kg copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 125.6kg zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) and 18.4 aluminum nitrate (Al(NO 3 ) 3 9H 2 O) be dissolved in distilled water, make mixed nitrate solution; Under room temperature and stirring condition, mix nitrate solution and the sodium carbonate solution of 1mol / L and flow dro...

Embodiment 2

[0097] 1. Preparation of catalyst

[0098] 1) Preparation of the first catalyst

[0099] Potassium carbonate and cerium nitrate are mechanically mixed to obtain the first catalyst, and the molar ratio of potassium carbonate and cerium nitrate in the first catalyst is 10:1;

[0100] 2) Preparation of the second catalyst

[0101] Potassium carbonate, nickel nitrate, and cerium nitrate are mechanically mixed to obtain a second catalyst, and the molar ratio between potassium carbonate, nickel nitrate and cerium nitrate in the second catalyst is 10:8:1;

[0102] 3) Preparation of copper-zinc-aluminum-rare earth precious metal composite catalyst

[0103] 151kg copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 128.5kg zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) and 51.5 aluminum nitrate (Al(NO 3 ) 3 9H 2 O) be dissolved in distilled water, make mixed nitrate solution; Under room temperature and stirring condition, mix nitrate solution and the sodium carbonate solution of 1mol / L and flow drop i...

Embodiment 3

[0130] 1. Preparation of catalyst

[0131] 1) Preparation of the first catalyst

[0132] Mechanically mixing calcium carbonate and cerium nitrate to obtain a first catalyst, the molar ratio of calcium carbonate and cerium nitrate in the first catalyst is 18:1;

[0133] 2) Preparation of the second catalyst

[0134] Sodium carbonate, nickel nitrate, and cerium nitrate are mechanically mixed to obtain a second catalyst, and the molar ratio between sodium carbonate, nickel nitrate and cerium nitrate in the second catalyst is 18:12:1;

[0135] 3) Preparation of copper-zinc-aluminum-rare earth composite catalyst

[0136] 181.2kg copper nitrate (Cu(NO 3 ) 2 ·3H 2 O), 91.8kg zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) and 52.9 aluminum nitrate (Al(NO 3 ) 3 9H 2O) be dissolved in distilled water, make mixed nitrate solution; Under room temperature and stirring condition, mix nitrate solution and the sodium carbonate solution of 1mol / L and flow drop in the container that distilled wa...

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Abstract

The invention discloses a method for preparing hydrogen by utilizing waste biomass, and the method comprises the following steps of: firstly, processing the waste biomass into semi-finished product fluid slurry; then, carrying out water vapor gasification treatment on the semi-finished product fluid slurry, thus obtaining crude oil; carrying out supercritical water gasification treatment on the crude oil, thus obtaining crude bio-gas; and finally, carrying out low-temperature transformation treatment on the crude bio-gas, thus obtaining transformed gas. The hydrogen is prepared by two-step gasification and low-temperature transformation, so that the biomass gasification efficiency is high, tar carbon deposit blockage can be avoided, continuous feeding is realized, and the prepared hydrogen is high in purity; furthermore, in the low-temperature transformation treatment, precious metals and rare-earth elements are added on the basis of a copper-zinc-aluminum catalyst, so that the reaction temperature is remarkably reduced, the activity and stability of the catalyst are improved, and the conversion rate of CO is high during the low-temperature transformation treatment.

Description

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Claims

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Application Information

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Owner 北京雷恩新材料科技有限公司
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