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High temperature antichlor and preparation method thereof

A dechlorination agent, high temperature technology, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of unrealizable dechlorination agents, and achieve the effects of stable structure, good adsorption activity, and high chlorine capacity

Active Publication Date: 2013-04-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Technical problem: The purpose of the present invention is to provide a high-efficiency and deep removal of chlorine-containing gas at high temperatures in order to solve the problem that existing dechlorination agents cannot achieve high-efficiency and deep removal of flue gas and HCl gas in IGCC and MCFC systems at high temperatures. Gas, a high-temperature dechlorination agent with high chlorine capacity, and also provides a preparation method of the high-temperature dechlorination agent

Method used

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  • High temperature antichlor and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] Weigh 700g of Ca(NO 3 ) 2 or Ca(OH) 2 , 90g Al(NO 3 ), 210g of Al 2 Si 2 o 5 (OH) 4 , Grind the above materials to more than 200 meshes respectively, mix them well, add them into the reaction kettle, then add 12kg of deionized water, and quickly add 4mol / L-1 Na 2 CO 3 The solution evenly heated the reaction kettle at a rotation speed of 60 rpm, and raised the temperature from room temperature to 473K within 2 hours, and then kept the reaction kettle at a constant temperature of 473K for 48 hours. The obtained product was filtered, and the filtered solid product was washed with deionized water until neutral, and dried at 353K for 24 hours. The obtained solid is molded and granulated to obtain the desired dechlorination agent.

[0026] The prepared dechlorination agent is carried out dechlorination experiment, and the dechlorination agent passes such as figure 1 The process adsorbs chlorine-containing gas in flue gas, and the adsorbent reactor can be a moving be...

Embodiment 2

[0028] Weigh 510g of Ca(NO 3 ) 2 or Ca(OH) 2 , 170g Al(OH) 3 , 320g Al 2 Si 2 o 5 (OH) 4 , Grind the above materials to more than 200 mesh respectively, mix them well, add them into the reaction kettle, then add 12kg of deionized water, and quickly add 5mol / L-1 Na 2 CO 3 The solution evenly heated the reaction kettle at a rotation speed of 50 rpm, and raised the temperature from room temperature to 473K within 2 hours, and then kept the reaction kettle at a constant temperature of 473K for 48 hours. The obtained product was filtered, and the filtered solid product was washed with deionized water until neutral, and dried at 353K for 24 hours. The obtained solid is molded and granulated to obtain the desired dechlorination agent.

[0029] The prepared dechlorination agent is carried out dechlorination experiment, and the dechlorination agent passes such as figure 1 The process adsorbs chlorine-containing gas in flue gas, and the adsorbent reactor can be a moving bed, f...

Embodiment 3

[0031] Weigh 255g of Ca(NO 3 )2 or Ca(OH) 2 , 345g Al(OH) 3 , 400g Al 2 Si 2 o 5 (OH) 4 , respectively grind the above materials to more than 200 meshes, mix well, add to the reaction kettle, then add 12kg of deionized water, and quickly add 6mol / L-1 Na ​​under the condition of magnetic stirring 2 CO 3 The solution evenly heated the reaction kettle at a rotation speed of 60 rpm, and raised the temperature from room temperature to 473K within 2 hours, and then kept the reaction kettle at a constant temperature of 473K for 48 hours. The obtained product was filtered, and the filtered solid product was washed with deionized water until neutral, and dried at 353K for 24 hours. The obtained solid is molded and granulated to obtain the desired dechlorination agent.

[0032] The prepared dechlorination agent is carried out dechlorination experiment, and the dechlorination agent passes such as figure 1 The process adsorbs chlorine-containing gas in flue gas, and the adsorbent...

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Abstract

The invention discloses a high temperature antichlor and a preparation method thereof. The antichlor comprises one or more of Ca(NO3)2, Ca(OH)2, Mg(NO3)2, Cu(NO3)2 and Zn(NO3)2, aluminum salt of Al(NO3)3 or Al(OH)3, and 20-47% of clay taking Al2Si2O5(OH)4 as a primary component, wherein the one or more of Ca(NO3)2, Ca(OH)2, Mg(NO3)2, Cu(NO3)2 and Zn(NO3)2 is or are taken as active component or active components and the aluminum salt of Al(NO3)3 or Al(OH)3 is taken as a carrier and an additive. The invention further discloses the preparation method for the high temperature antichlor, and the preparation method comprises the steps of uniformly mixing the materials, adding into a reaction kettle for dissolving, rotating, heating, filtering, washing and drying, roasting, forming and pelletizing the obtained solid to obtain the high temperature antichlor. The prepared antichlor can be used for efficiently and deeply removing chlorine gas in smoke at the temperature of 723-1023 K DEG C, and the chlorine penetration capacity reaches more than 60%.

Description

technical field [0001] The invention relates to a dechlorination agent for deeply removing chlorine-containing gas under high-temperature conditions and a preparation method thereof, belonging to the technical field of high-temperature flue gas purification treatment. Background technique [0002] Studies have shown that the generation of chlorine-containing gases mainly comes from the combustion of fossil fuel coal and the sharp increase in waste incineration. If the chlorine-containing gas in the flue gas is discharged into the atmosphere, it will cause an increase in acid rain, and it will cause great harm to both nature and human beings. In addition, it will also cause great harm to the equipment in the combustion system: the chlorine in the flue gas The gas is strongly acidic, which will cause high-temperature corrosion damage on the heating surface of the furnace and low-temperature corrosion on the rear heating surface, which will increase the steam parameters, cause ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30B01D53/02
Inventor 金保昇曹俊钟文琪黄亚继仲兆平
Owner SOUTHEAST UNIV
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