Method for preparing catalyst capable of performing simultaneous desulfurization and denitrification on flue gas

A desulfurization and denitrification, catalyst technology, applied in the direction of chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problems of temperature reduction, catalytic activity reduction, etc., to achieve the effect of enhanced adsorption capacity and lower reaction temperature

Inactive Publication Date: 2016-02-03
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, catalysts for simultaneous desulfurization and denitrification mainly include activated carbon, CuO/Al 2 o 3 , NiO/ZSM-5, spinel-type oxides, etc. These catalysts are

Method used

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  • Method for preparing catalyst capable of performing simultaneous desulfurization and denitrification on flue gas

Examples

Experimental program
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Effect test

Example Embodiment

[0040] Example 1, 10% Fe 2 O 3 2% Y 2 O 3 / AC

[0041] First, weigh 20-40 mesh AC500g into a glass container, add the prepared 10% HNO 3 , So that AC can be excessively immersed, after immersing for 12h, wash with deionized water to neutrality, dry in a drying box at 110 ℃ for 12h, take it out and cool to room temperature for later use.

[0042] Then according to the active components of the catalyst and the loading of the co-catalyst, accurately weigh 2.5299g of Fe(NO 3 ) 3 ·9H 2 O, 0.3393g Y(NO 3 ) 3 ·6H 2 O, add 7ml deionized water to make a mixed solution;

[0043] Accurately weigh 5.000g of pretreated AC, immerse it in the prepared mixed solution, and immerse it at room temperature for 12h. After obtaining the impregnated activated carbon, place it in a drying oven at 110°C for 12h, and then place it in a nitrogen-protected tube It is roasted at 500°C for 4 hours in a type roaster, and then taken out and cooled to room temperature to obtain the catalyst capable of simultaneously...

Example Embodiment

[0045] Example 2, 10% Fe 2 O 3 2%La 2 O 3 / AC

[0046] First, weigh 20-40 mesh AC500g into a glass container, add the prepared 10% HNO 3 , So that AC can be excessively immersed, after immersing for 12h, wash with deionized water to neutrality, dry in a drying box at 110 ℃ for 12h, take it out and cool to room temperature for later use.

[0047] Then according to the active components of the catalyst and the loading of the co-catalyst, accurately weigh 2.5299g of Fe(NO 3 ) 3 ·9H 2 O, 0.2658g of La(NO 3 ) 3 ·6H 2 O, add 7ml deionized water to make a mixed solution;

[0048] Accurately weigh 5.000g of pretreated AC, immerse it in the prepared mixed solution, and immerse it at room temperature for 12 hours. After obtaining the impregnated activated carbon, place it in a drying oven at 110°C for 12 hours, and then place it in a nitrogen-protected tube It is roasted in a roasting furnace at 500°C for 4 hours, and then taken out and cooled to room temperature to obtain the catalyst capable...

Example Embodiment

[0050] Example 3, 10% Fe 2 O 3 2% CeO 2 / AC

[0051] First, weigh 20-40 mesh AC500g into a glass container, add the prepared 10% HNO 3 , So that AC can be excessively immersed, after immersing for 12h, wash with deionized water to neutrality, dry in a drying box at 110 ℃ for 12h, take it out and cool to room temperature for later use.

[0052] Then according to the active components of the catalyst and the loading of the co-catalyst, accurately weigh 2.5299g of Fe(NO 3 ) 3 ·9H 2 O, 0.2523g Ce(NO 3 ) 3 ·6H 2 O, add 7ml deionized water to make a mixed solution;

[0053] Accurately weigh 5.000 g of pretreated AC, immerse it in the prepared mixed solution, and immerse it at room temperature for 12 hours to obtain the impregnated activated carbon and place it in a drying oven at 110°C for 12 hours, and then place it in a nitrogen-protected tube It is roasted at 500°C for 4 hours in a type roasting furnace, and then taken out and cooled to room temperature to obtain the catalyst capable of...

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Abstract

The invention discloses a method for preparing a catalyst capable of performing simultaneous desulfurization and denitrification on flue gas. First deionized water is utilized to dissolve a precursor of active component Fe2O3 and a precursor of a promoter, and an active component precursor solution is obtained; a well weighed activated carbon carrier is steeped at room temperature for 10-12 h through the active component precursor solution; the well steeped activated carbon carrier is placed in a drying oven at 110 DEG C to be dried for 12 h and is roasted for 3-5 h at 450-550 DEG C under the nitrogen protection, so that nitrate in the precursors is decomposed into an oxide; the precursors are taken out to be cooled to room temperature, and the catalyst capable of performing simultaneous desulfurization and denitrification on flue gas is obtained. The catalyst prepared through the method is suitable for simultaneous desulfurization and denitrification. Moreover, by pretreatment through nitric acid, the adsorption capacity of the catalyst is enhanced, catalytic activation centers are increased, and the reaction temperature can be reduced by presulfurization.

Description

technical field [0001] The invention relates to the technical field of transition metal oxide catalysts, in particular to a method for preparing a catalyst capable of simultaneous desulfurization and denitrification of flue gas. Background technique [0002] With the development of my country's industry and the consumption of energy, air pollution has become a concern, SO 2 and NO are the most important pollutants, which seriously endanger the ecological environment and human health, reducing SO 2 and NO emissions are imperative. Compared with the combination of traditional SCR denitrification technology and FGD desulfurization technology to achieve the purpose of desulfurization and denitrification, desulfurization and denitrification have the advantages of saving floor space, reducing investment and operating costs, and have attracted a lot of attention. [0003] In the prior art, catalysts for simultaneous desulfurization and denitrification mainly include activated car...

Claims

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Application Information

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IPC IPC(8): B01J23/83B01J35/10B01D53/86B01D53/56B01D53/50
Inventor 宋永吉王婷李翠清王虹任晓光
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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