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Absorbent for removing mercury out of coal burning smoke and preparation method thereof

A coal-fired flue gas and adsorbent technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of limited adsorption capacity of adsorbents, and achieve the effects of low cost, good adsorption capacity, and high mercury removal efficiency

Inactive Publication Date: 2014-02-12
BENGBU HUAFANG FILTER
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, most of these adsorbents have limited adsorption capacity, and different adsorbents need to be studied according to different requirements to play the best role.

Method used

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Embodiment Construction

[0011] An adsorbent for removing mercury in coal-burning flue gas, made of the following raw materials in parts by weight: bentonite 85, potassium iodate 5, chitosan 7, dilute sulfuric acid 4, sodium citrate 3, sodium tartrate 3, modified 4. Appropriate amount of water;

[0012] The modified diatomite is made of the following raw materials in parts by weight (kg): 145 diatomite, 11 alum, 1.5 nano-carbon, 1.5 barley oil, 2.5 ascorbic acid, 1.6 citric acid, 2.4 sodium tripolyphosphate, ginseng powder 2.4; the preparation method is to put the diatomite in a calciner and calcinate at 550°C for 3.6 hours, take it out, soak it in 13% hydrochloric acid solution for 4.5 hours, filter it out, wash it repeatedly with clean water, dry it, add it to water, At the same time, add nano-carbon, ascorbic acid, citric acid and alum, grind to obtain a slurry, spray dry, mix other remaining ingredients with dry powder, grind and disperse evenly.

[0013] The preparation method of the adsorbent f...

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Abstract

The invention relates to an absorbent for removing mercury out of the coal burning smoke. The absorbent is prepared from the following raw materials in parts by weight: 80 to 90 parts of bentonite, 4 to 6 parts of potassium iodate, 6 to 9 parts o chitosan, 3 to 5 parts of dilute sulfuric acid, 2 to 4 parts of sodium citrate, 2 to 4 parts of sodium tartrate, 4 to 5 parts of modified diatomite and an appropriate amount of water. According to the absorbent, bentonite is used as an absorbent base material, the absorption capacity is good, an antibactieral, deodorizing, moisture absorption and mildew preventing functions also can be realized, and organisms also can be catalyzed and decomposed; the absorbent is high in mercury removal efficiency, low in cost, free of secondary pollution and capable of meeting the industrial application requirement.

Description

technical field [0001] The invention relates to the field of modified functional materials, in particular to an adsorbent for removing mercury in coal-fired flue gas and a preparation method thereof. Background technique [0002] At present, air pollution has seriously affected people's production and life, so air purification has to be taken seriously. Adsorbents are often used in air purification, mainly activated alumina, activated carbon, and adsorption materials developed for selective adsorption of certain components. However, most of these adsorbents have limited adsorption capacity, and different adsorbents need to be studied according to different requirements to play the best role. [0003] Mercury is a highly toxic substance that exists in large quantities in coal-fired flue gas, and the materials for truly demercury removal still need to be studied. Contents of the invention [0004] The object of the present invention is to provide an adsorbent for removing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30B01D53/02
Inventor 陈登宇
Owner BENGBU HUAFANG FILTER
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