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Adsorbing agent for coal-fired flue gas

A coal-fired flue gas and adsorbent technology, which is applied in gas treatment, membrane technology, other chemical processes, etc., can solve the problems of unsatisfactory adsorption effect, and achieve the effect of good controllability, good sulfur resistance and large adsorption capacity.

Inactive Publication Date: 2016-08-17
MAANSHAN SHUNDA ENVIRONMENTAL PROTECTION EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fly ash has a certain adsorption capacity for pollutants, but the adsorption effect is often not ideal. In order to improve the adsorption performance of fly ash, the research on the modification of fly ash is the focus of research.

Method used

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Examples

Experimental program
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Embodiment Construction

[0013] An adsorbent for coal-fired flue gas, made of the following raw materials by weight: fly ash 40, iron nitrate 4, manganese acetate 3, glass fiber 13, sodium silicate 5, lime 3, aluminum chloride 5 , Lumao soil 4, borate coupling agent 0.3, deionized water appropriate;

[0014] The adsorbent for coal-fired flue gas is prepared by the following specific steps:

[0015] (1) Wash the fly ash with deionized water several times, and then dry it in an oven at 120°C for 4 hours. After cooling, soak the fly ash with 2 times the amount of nitric acid for 2 hours, and then put it in a 60°C water bath Bathe in water for 1 hour, then wash with deionized water until it is neutral, and dry for later use;

[0016] (2) Mix ferric nitrate and manganese acetate with 3 times the amount of deionized water to dissolve and stir evenly, then add the fly ash prepared in step (1) to the mixed solution, heat and stir in a magnetic stirrer until dry, then Put it in a desiccator and dry it at 120°C for ...

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Abstract

The invention discloses an adsorbing agent for coal-fired flue gas. The adsorbing agent is prepared from, by weight, 40-50 parts of fly ash, 4-5 parts of ferric nitrate, 3-4 parts of manganese acetate, 13-15 parts of glass fibers, 5-7 parts of sodium silicate, 3-4 parts of lime, 5-6 parts of aluminum chloride, 4-5 parts of Kanuma soil, 0.3-0.5 part of boric ester coupling agent and a proper amount of deionized water. The adsorbing agent is simple in preparing method and low in cost; compared with original fly ash, the adsorbing agent has the advantages of being high in mercury adsorption capacity, large in adsorbing capacity and the like, and mercury in the flue gas can be effectively adsorbed.

Description

Technical field [0001] The invention relates to the technical field of adsorbents, in particular to an adsorbent for coal-burning flue gas. Background technique [0002] In recent years, the metal elements produced during the combustion of coal have attracted the attention of all sectors of society. These metal elements will have a great impact on the environment after they are discharged into the atmosphere. Mercury is one of the harmful metals. Mercury has the property of being continuously enriched in organisms and in the food chain, which can cause long-term incurable damage to the human nervous system. In daily industrial production, the smelting industry, red ore mining, cement production, biomass burning, and combustion Coal combustion, etc. will produce a certain amount of mercury emitted into the atmosphere, and coal combustion is currently the largest source of pollution. In order to solve the increasingly serious problem of mercury pollution in coal-fired flue gas, pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01D53/02
CPCB01D53/02B01D2253/20B01D2257/602B01D2258/0283B01J20/0229B01J20/0248B01J20/043B01J20/10B01J20/103B01J20/223B01J20/24
Inventor 王春保
Owner MAANSHAN SHUNDA ENVIRONMENTAL PROTECTION EQUIP
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