Preparation method for spherical nanometre magnesium ferrite desulfurizer

A technology of magnesium ferrite and desulfurizer is applied in the preparation of nanometer flue gas desulfurizer and the field of preparation of nanometer magnesium ferrite desulfurizer to achieve good adsorption performance, good application value and application prospect, and the effect of broadening the synthesis method.

Inactive Publication Date: 2010-05-19
DALIAN UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

At present, various studies are mostly carried out by loading different metals to improve the SO 2 The removal ability of the desulfurizer can be increased by changing the morphology of the desulfurizer to increase its surface area, thereby improving the SO 2 The adsorption capacity has not been reported in detail

Method used

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  • Preparation method for spherical nanometre magnesium ferrite desulfurizer
  • Preparation method for spherical nanometre magnesium ferrite desulfurizer
  • Preparation method for spherical nanometre magnesium ferrite desulfurizer

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Weigh 0.808gFe(NO 3 ) 3 9H 2 O and 0.512gMg(NO 3 ) 2 ·6H 2 O was dissolved in 60ml of ethylene glycol, put into a constant temperature water bath magnetic stirring pot and stirred at room temperature until the solution was completely clear, and then 30mmolNH 4 Ac was added to the above solution, and the microemulsion obtained above was placed in an autoclave at 180° C. for 24 hours to crystallize. Wash the obtained sample with water / alcohol / separate, and dry overnight at 60°C in a vacuum oven to obtain MgFe 2 o 4 Nanosphere precursors. The dried sample was put into a muffle furnace, and the temperature was programmed from room temperature to 500 °C at a rate of 1 °C / min, and then calcined at 500 °C for 2 hours, and finally the spherical shape of MgFe was obtained. 2 o 4 Desulfurizer.

Embodiment 2

[0020] According to the preparation method of the present invention of embodiment 1, Fe(NO 3 ) 3 9H 2 O mass increased to 2.4g, Mg(NO 3 ) 2 ·6H 2 O mass increased to 1.5g, ethylene glycol volume increased to 180ml, NH 4 Ac increased to 90mmol, and crystallized at 200°C for 24h in the reactor to obtain spherical shape MgFe 2 o 4 Desulfurizer.

Embodiment 3

[0022] According to the preparation method of the present invention in Example 1, the volume of ethylene glycol is increased to 100ml, and the hydrothermal reaction is carried out at 200°C for 30h to obtain spherical shape MgFe 2 o 4 Desulfurizer.

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Abstract

The invention discloses a preparation method for a spherical nanometre magnesium ferrite desulfurizer, which belongs to the field of pollution control and technology. The method comprises the following steps of: dissolving a ferric nitrate and a magnesium nitrate in a glycol; adding an ammonium acetate into the mixture under the condition of violent stirring; putting the microemulsion in a high-pressure reactor to perform crystallization at 108 to 200 DEG C for 24 to 48h; and after filtering, washing and drying, calcining in a muffle furnace at 500 DEG C for 2h to obtain the spherical nanometre magnesium ferrite desulfurizer. The material is tested by an absorption test and the obtained magnesium ferrite has SO2 adsorbability. The method not only broadens a good magnesium shape changing and synthesizing method, but also has good SO2 adsorbability. The preparation method has good application value and application prospect in the field of absorption catalysis.

Description

technical field [0001] The invention belongs to the field of gas purification and desulfurization agent preparation, and relates to a preparation method of a nano flue gas desulfurization agent, in particular to a preparation method of a nanometer magnesium ferrite (MgFe2O4) desulfurization agent with a spherical shape. Background technique [0002] Acid rain is one of the major environmental problems facing human beings today. Acid rain not only destroys natural environments such as water bodies, soils, and forests, but also causes harm to human bodies, animals, and plants. In my country, the formation of acid rain is mainly due to the emission of a large amount of flue gas, the main component of which is SO 2 . my country is a big coal-burning country. If no effective control measures are taken, SO 2 Discharge is bound to cause serious pollution to the environment. At present, it is generally believed that flue gas desulfurization (FGD) technology is the best way to con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/81B01D53/50B01J20/30B01J20/06B01J20/04B01J20/28B01D53/86
Inventor 李新勇赵玲曲振平石勇肇启东陈国华
Owner DALIAN UNIV OF TECH
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