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Catalyst for preparing combustible gas by wet biomass and application

A catalyst and biomass technology, applied in the field of supercritical water gasification of wet biomass to produce flammable gas, can solve the problems of few researches on supercritical water gasification of biomass, and achieve good mass and heat transfer properties , High energy utilization rate, easy to handle effect

Inactive Publication Date: 2012-09-12
INNER MONGOLIA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current biomass gasification research technology mainly uses gasification agents (air, oxygen, water vapor, etc.) to gasify in a high-temperature and dry environment, and there is little research on supercritical water gasification of biomass.

Method used

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  • Catalyst for preparing combustible gas by wet biomass and application
  • Catalyst for preparing combustible gas by wet biomass and application
  • Catalyst for preparing combustible gas by wet biomass and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: 4.85gBi (NO 3 ) 3 ·5H 2 O, 4.04gFe(NO 3 ) 3 9H 2 O made into solution, Bi(NO 3 ) 3 ·5H 2 O was dissolved with dilute hydrochloric acid, then citric acid with twice the molar amount of metal ions was added, and viscous sol was formed by vigorous stirring at 70°C, dried at 100°C to obtain a xerogel precursor, and calcined at 700°C. The catalyst activity of the prepared catalyst was measured according to the following method: 2 g of crushed and sieved corn stalk powder, 0.4 g of catalyst, and water were put into a self-made 200 ml supercritical reactor. The system was boosted to 20MPa with inert gas argon for leak detection, and the leak detection was completed. The temperature and pressure were gradually adjusted to the required level, and the reaction was timed after maintaining the stability. Afterwards, the reaction kettle was cooled to room temperature, and the gas products were collected for gas chromatography analysis. GC-14C gas chromatograph...

Embodiment 2

[0023] Embodiment 2: Catalyst raw material is 4.34gBi(NO 3 ) 3 ·5H 2 O, 4.04gFe(NO 3 ) 3 9H 2 O, its preparation process and the resulting catalyst used in the supercritical biomass water gasification reaction process are the same as in Example 1.

Embodiment 3

[0024] Embodiment 3: Catalyst raw material is 3.39gBi (NO 3 ) 3 ·5H 2 O, 4.04gFe(NO 3 ) 3 9H 2 O, its preparation process and the resulting catalyst used in the supercritical biomass water gasification reaction process are the same as in Example 1.

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Abstract

The invention discloses a catalyst for preparing combustible gas by wet biomass and an application, in particular to an application of the bismuth-iron composite oxide catalyst in the aspect of preparing the combustible gas by wet biomass through supercritical water vaporization. The selected catalyst is composite oxide containing bismuth and iron, and the content of the combustible gas obtained by supercritical water catalysis and vaporization reaction of the wet biomass in the presence of the catalyst can be up to 99%. The catalyst disclosed by the invention has the advantages that the material for preparing the combustible gas can adopt waste wet biomass such as straws of corn, broomcorn and sunflower, does not need high-energy-consumption drying process, and is high in energy utilization ratio and environment-friendly. The catalyst disclosed by the invention is simple in preparation process and low in cost.

Description

technical field [0001] The invention relates to a catalyst for preparing combustible gas from wet biomass and its application, in particular to the application of a bismuth-iron composite oxide catalyst in supercritical water gasification of wet biomass to prepare combustible gas. Background technique [0002] Energy refers to the material resources that provide various capabilities and power for human production and life. It is an important material basis for the national economy and modern civilization. Safe and reliable energy supply and efficient and clean use of energy are key to achieving sustainable social and economic development. basic guarantee. The degree of development and effective utilization of energy is one of the important symbols of people's production technology and living standards. [0003] Since the industrial revolution in the 1870s, the extraction and consumption of fossil fuels has increased dramatically, and the ensuing energy shortages of oil, nat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/843C10J3/00
CPCY02P20/52Y02P20/54
Inventor 胡瑞生张雯娜杨延康张喆宋丽峰王景瑶苏海全
Owner INNER MONGOLIA UNIVERSITY
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