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Production method of novel modified activated carbon material used for smoke mercury removal

A new type of activated carbon technology, applied in the field of preparation of new modified activated carbon materials, can solve the problems of catalyst service life to be questioned, unsuitable for mercury removal, low yield of final products, etc., to achieve easy production of raw materials and high mercury removal performance , cheap effect

Active Publication Date: 2019-07-16
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has some innovations in the removal of nitrogen oxides by selective catalytic reduction, the pore structure of the activated carbon produced by it is mainly micropores, which is not suitable for mercury removal, and the yield of the final product obtained by this method is very low. In addition, the service life of the catalyst is still open to question.

Method used

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  • Production method of novel modified activated carbon material used for smoke mercury removal
  • Production method of novel modified activated carbon material used for smoke mercury removal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Get cation exchange resin (Mitsubishi Chemical CR11, polystyrene polymer resin with high porosity) 10g, add to Al(NO 3 ) 3 and Ce(NO 3 ) 3 In the mixed solution, the solution concentration is 1mol / L, Al(NO 3 ) 3 with Ce(NO 3 ) 3 to a certain molar ratio, and stirred at a constant speed. After ion exchange for 2 hours, the resin was filtered out and dried at 20°C. Then, the resin was pretreated at 120°C in the air atmosphere for 2 hours, and then the product was placed in a nitrogen atmosphere at 800°C. ℃ for 2 h, and then the product was 2 The activated carbon was activated at 550°C for 2 hours in the atmosphere, and finally the modified activated carbon was used in the flue gas mercury removal experiment. Al(NO 3 ) 3 with Ce(NO 3 ) 3 The effect on the mercury removal effect is shown in Table 1.

[0024] Table 1. Al(NO 3 ) 3 and Ce(NO 3 ) 3 Influence on mercury removal effect

[0025] Al(NO 3 ) 3 : Ce(NO 3 ) 3

Embodiment 2

[0027] Get cation exchange resin (Mitsubishi Chemical CR11, polystyrene polymer resin with high porosity) 10g, add to Al(NO 3 ) 3 and Ce(NO 3 ) 3 In the mixed solution, the solution concentration is 1mol / L, Al(NO 3 ) 3 with Ce(NO 3 ) 3 The molar ratio was 1:10, and stirred at a constant speed for ion exchange. After a certain period of time, the resin was filtered out and dried at 20°C, and then the resin was pretreated at 120°C for 2 hours in the air atmosphere, and then the product was placed in Carbonization treatment was carried out at 800 °C for 2 h in a nitrogen atmosphere, and then the product was 2 The activated carbon was activated at 550°C for 2 hours in the atmosphere, and finally the modified activated carbon was used in the flue gas mercury removal experiment. The effect of different ion exchange time on the mercury removal effect is shown in Table 2.

[0028] Table 2. Effect of different ion exchange time on mercury removal effect

[0029] ion ...

Embodiment 3

[0031] Get cation exchange resin (Mitsubishi Chemical CR11, polystyrene polymer resin with high porosity) 10g, add to Al(NO 3 ) 3 and Ce(NO 3 ) 3 In the mixed solution, the solution concentration is 1mol / L, Al(NO 3 ) 3 with Ce(NO 3 ) 3 The molar ratio was 1:10, and stirred at a constant speed. After ion exchange for 2 hours, the resin was filtered out and dried at a certain ambient temperature. Then, the resin was pretreated at 120°C for 2 hours in the air atmosphere, and then the product was placed in a nitrogen atmosphere. Carbonization treatment was carried out at 800 °C for 2 h, and then the product was 2 The activated carbon was activated at 550°C for 2 hours in the atmosphere, and finally the modified activated carbon was used in the flue gas mercury removal experiment. The effect of different ion exchange time on the mercury removal effect is shown in Table 3.

[0032] Table 3. Effect of different drying temperatures on mercury removal

[0033] Drying...

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Abstract

The invention discloses a production method of a novel modified activated carbon material used for smoke mercury removal. The production method of the novel modified activated carbon material used forsmoke mercury removal comprises the steps of adopting cation exchange resin as an activated carbon precursor, adopting Al(NO3)3 and Ce(NO3)3 as modifiers, and conducting treatment in different gas atmospheres. The modification method adopts in-situ growth, the characteristics of the modifying substances and activated carbon can be fully utilized through the produced activated carbon, the defect that the activity is reduced and lost due to the fact that an original site of activated carbon is occupied by a modifying substance is overcome, and the novel modified activated carbon material used for smoke mercury removal has high mercury removal performance.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a preparation method of a novel modified activated carbon material used for flue gas demercuration. Background technique [0002] Activated carbon is a carbonaceous porous material with rich pore structure, large specific surface area and surface functional groups. It has the characteristics of strong adsorption capacity, good chemical stability, and easy regeneration. Activated carbon can be made by processing materials with high carbon content such as charcoal, trees, coal, peat, coconut shell, etc. Due to the special physical and chemical properties of activated carbon, it is often used as a catalyst or adsorbent and is widely used in various fields, and exhibits good performance, especially in the chemical and environmental protection industries. For example, activated carbon can be used as an adsorbent for the removal of mercury, a heavy metal pollutant emitted in flue g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/602B01J20/06B01J20/20B01J20/28054
Inventor 王卉杨圩余旺盛张蕾吴圣姬
Owner HANGZHOU DIANZI UNIV
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