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Process for preparing iron based oxygen carrier

An oxygen carrier and iron-based technology, applied in the direction of iron oxide/hydroxide, iron oxide, alumina/aluminum hydroxide, etc., can solve problems that have not been reported in the literature, and achieve optimized pore size distribution, good repeatability, The effect of increasing solubility

Inactive Publication Date: 2009-07-22
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] So far, Fe, Al nitrate and organic fuels have been used as raw materials to prepare Fe 2 o 3 with Al 2 o 3 Phase oxide composites have not been reported so far

Method used

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  • Process for preparing iron based oxygen carrier
  • Process for preparing iron based oxygen carrier
  • Process for preparing iron based oxygen carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Preparation of metal nitrate and urea mixed solution

[0024] According to Fe 2 o 3 / Al 2 o3 The mass ratio is 6:4 and the stoichiometric coefficient of metal nitrate and urea is 1. Weigh quantitative ferric nitrate, aluminum nitrate and urea, add an appropriate amount of deionized water, and stir evenly to obtain a fully dissolved and uniformly mixed solution.

[0025] (2) Preparation of wet gel

[0026] Then, move the above solution to a magnetic stirrer with a constant temperature function set at 75°C, and stir at a constant speed, so that the water in the mixed solution is continuously evaporated, and the ferric nitrate, aluminum nitrate and urea are uniformly mixed and hydrolyzed. Complexation forms a viscous sol.

[0027] (3) Drying of wet gel

[0028] The wet gel formed above was moved into a muffle furnace to be dried in stages at 80°C and 120°C respectively.

[0029] (4) Ignition treatment of xerogel

[0030] The xerogel dried in stages in the muffle...

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Abstract

The invention provides an iron-based oxygen carrier preparation method which takes iron and aluminium nitrate as raw materials and urea as fuel, and combines the sol-gel method organically with combustion compound method to prepare nanometer-class Fe2O3 / Al2O3 oxygen carrier with excellent anti-sintering performance. The iron-based oxygen carrier preparation method fully uses the mixing evenness between a plurality of components in the sol-gel method and the reaction process self-maintenance, quickness and low energy-consumption characteristics in the combustion compound method, easily obtains the used oxygen carrier preparation raw material, has the advantages of low price, simple preparation technology and easy operation, and is suitable for scaled mass production of the oxygen carrier.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing an iron-based oxygen carrier. Background technique [0002] Recently, among many environmental problems on the earth, the greenhouse effect and global warming have attracted great attention. While fossil fuels such as coal, oil and natural gas provide more than 85% of the world's energy consumption, a large amount of CO is also produced during the combustion of fossil fuels. 2 , is the CO produced by human activities 2 a major source of . Therefore, the reduction of CO emitted during the combustion of fossil fuels 2 It plays an important role in controlling the greenhouse effect and global warming. [0003] Chemical looping combustion technology as a new type of fossil fuel CO 2 Emission reduction technology, and existing various CO 2 Compared with the emission reduction technology, it has significant characteristics and advantages, m...

Claims

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Application Information

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IPC IPC(8): C10L10/02C01G49/06C01F7/02
CPCC10L10/02
Inventor 王保文丁宁郑瑛郑楚光
Owner HUAZHONG UNIV OF SCI & TECH
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