Medium-temperature and high-temperature dechlorinating agent for removing HCl gas from flue gas and preparation method thereof

A dechlorination agent, medium and high temperature technology, applied in the field of flue gas purification, can solve the problems of narrow use range, non-regeneration, high price, etc., and achieve the effects of developed pores, stable structure and high adsorption activity

Active Publication Date: 2018-10-16
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are still many problems, such as low chlorine

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] Weigh 750g electrolytic stone, 30g Ca(NO 3 ) 2 , 200g of activated carbon and 20g of carboxymethyl cellulose; first dissolve the electrolytic stone in 15kg of acetic acid, stir at a stirring speed of 65rpm for 4 hours, and then dry it at 358K to obtain a solid; the electrolytic stone and Ca(NO 3 ) 2 Fully mix, then add 4kg of deionized water at 333K, the resulting mixture at a stirring speed of 65rpm, and dry at 353K to obtain a solid, then the resulting solid was roasted at 1123K for 16 hours, and the activated carbon was heated at 350K Preheating for 4 hours, then impregnating the roasted mixture on the preheated molecular sieve, and then mixing with carboxymethyl cellulose, stirring the obtained mixture at 65 rpm, and drying at 353K to obtain a solid. The obtained solid is molded and granulated to obtain the desired dechlorination agent.

[0034] The prepared dechlorination agent is subjected to a dechlorination experiment, and the adsorbent re...

Example Embodiment

[0035] Example 2:

[0036] Weigh 800g electrolytic stone, 26g Ca(NO 3 ) 2 , 144g of activated carbon and 30g of carboxymethyl cellulose; first dissolve the electrolytic stone in 16kg of acetic acid, stir at a stirring speed of 65rpm for 4 hours, then dry at 358K to obtain a solid; the electrolytic stone and Ca(NO 3 ) 2 Fully mix, then add the deionized water of 333K of 4kg, the mixture obtained is at a stirring speed of 70rpm, and dry at 353K to obtain a solid, then the obtained solid is roasted at 1123K for 16 hours, and the activated carbon is heated at 350K Preheating for 4 hours, then impregnating the roasted mixture on the preheated molecular sieve, and then mixing with carboxymethyl cellulose, stirring the obtained mixture at a rotation speed of 70 rpm, and drying at 333K to obtain a solid. The obtained solid is molded and granulated to obtain the desired dechlorination agent.

[0037] The prepared dechlorination agent is subjected to a dechlorination experiment, and...

Example Embodiment

[0038] Example 3:

[0039] Weigh 800g electrolytic stone, 50g NaHCO 3 , 120g of activated carbon and 30g of carboxymethyl cellulose; first dissolve the electrolytic stone in 16kg of acetic acid, stir at a stirring speed of 80rpm for 4 hours, and then dry it at 358K to obtain a solid; the electrolytic stone and NaHCO 3 Fully mix, then add the deionized water of 353K of 5kg, the obtained mixture is at a stirring speed of 80rpm, and dry at 353K to obtain a solid, then the obtained solid is roasted at 1123K for 16 hours, and the activated carbon is heated at 353K Preheating for 4 hours, then impregnating the roasted mixture on the preheated molecular sieve, and then mixing with carboxymethyl cellulose, stirring the obtained mixture at 80 rpm, and drying at 353K to obtain a solid. The obtained solid is molded and granulated to obtain the desired dechlorination agent.

[0040] The prepared dechlorination agent is subjected to a dechlorination experiment, and the adsorbent reactor ...

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PUM

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Abstract

The invention discloses a medium-temperature and high-temperature dechlorinating agent for removing HCl gas from flue gas and a preparation method thereof. The dechlorinating agent comprises an activecomponent, a carrier and auxiliary agent and an adhesive, wherein the mass percentage of the active component is 70-88%, the mass percentage of the carrier and auxiliary agent is 10-25%, and the masspercentage of the adhesive is 2-5%; the active component is obtained by calcinating an active precursor component at high temperature; the active precursor component is obtained by mixing pretreatedelectrolytic stone and more than one of Ca(NO3)2, Zn(NO3)2 and NaHCO3. The dechlorinating agent can efficiently and deeply remove the HCl gas from the flue gas in the temperature range of 273-1073K.

Description

Technical field: [0001] The invention relates to a medium-high temperature dechlorination agent for removing HCl gas in flue gas and a preparation method thereof, belonging to the technical field of flue gas purification treatment. Background technique: [0002] The diversification of industrial products and the enrichment of material life not only improve the quality of life of residents, but also bring a large amount of domestic garbage to the city. According to statistics, at present, the annual output of domestic garbage per capita in the world's cities is about 450-500 kg. The rate of 8-10% is increasing year by year. As a developing country with rapid economic growth, the impact of urban domestic waste cannot be underestimated. More than 600 cities across the country have piled up or landfilled 8 billion tons of various types of waste. Garbage stockpiles accumulatively occupy 500 million square meters of land. A large amount of domestic waste not only destroys the ima...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/2045B01D2258/0283B01J20/16B01J20/20B01J20/24B01J20/28016B01J20/2803
Inventor 曹俊金保昇黄亚继
Owner SOUTHEAST UNIV
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