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Activated carbon with high desulfurization efficiency

A technology of activated carbon and high desulfurization, applied in the directions of alkali metal oxides/hydroxides, inorganic chemistry, gas treatment, etc., can solve the problem of low desulfurization efficiency, and achieve the effect of improving adsorption capacity, ensuring adsorption efficiency, and good desulfurizing efficiency

Inactive Publication Date: 2019-08-06
合肥俄弈电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its strong adsorption, activated carbon is widely used in production and life. Currently, activated carbon is used to filter the flue gas emitted by thermal power plants. Although it can remove sulfur dioxide in the flue gas to a certain extent, the desulfurization efficiency is low. Therefore, how to improve the desulfurization efficiency of activated carbon is a technical problem to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of activated carbon with high desulfurization efficiency comprises the following steps:

[0025] (1) Modified wood flour

[0026] Mix wood flour and starch in a mass ratio of 5:1 and place them in deionized water. After ultrasonic vibration for 1 hour, a mixed dispersion is obtained, and 0.5% of its mass of cobalt chloride is added to the mixed dispersion, and then heated to 72°C , stirred at a speed of 1200r / min for 40min, then added potassium borohydride with a mass of 0.3% of wood flour, adjusted the temperature to 0°C, stirred at a speed of 500r / min for 2 hours, then stood still for 30min, then filtered, and washed with deionized water , dried to constant weight, then heated to 210°C under an inert atmosphere, kept for 40 minutes, and then naturally cooled to room temperature to obtain modified wood flour;

[0027] (2) Pre-modified activated carbon

[0028] The raw activated carbon is sequentially added and soaked in sodium maleate solution and sulfuric aci...

Embodiment 2

[0032] A kind of activated carbon with high desulfurization efficiency comprises the following steps:

[0033] (1) Modified wood flour

[0034] Mix wood flour and starch in a mass ratio of 5: 2 and place them in deionized water. After ultrasonic vibration for 1 hour, a mixed dispersion is obtained. Add 0.54% of its mass of cobalt chloride to the mixed dispersion, and then heat to 72°C , stirred at a speed of 1200r / min for 40min, then added potassium borohydride with a mass of 0.4% of wood powder, adjusted the temperature to 0°C, stirred at a speed of 500r / min for 2 hours, then stood for 30min, then filtered, and washed with deionized water , dried to constant weight, then heated to 215°C in an inert atmosphere, kept for 40 minutes, and then naturally cooled to room temperature to obtain modified wood flour;

[0035] (2) Pre-modified activated carbon

[0036] The raw activated carbon is sequentially added and soaked in sodium maleate solution and sulfuric acid solution, where...

Embodiment 3

[0040] A kind of activated carbon with high desulfurization efficiency comprises the following steps:

[0041] (1) Modified wood flour

[0042] Mix wood flour and starch in a mass ratio of 5:1.5 and place in deionized water. After ultrasonic vibration for 1 hour, a mixed dispersion is obtained. Add 0.52% cobalt chloride by mass to the mixed dispersion, and then heat to 72°C , stirred at a speed of 1200r / min for 40min, then added potassium borohydride with a mass of 0.35% of wood flour, adjusted the temperature to 0°C, stirred at a speed of 500r / min for 2 hours, then stood for 30min, then filtered and washed with deionized water , dried to constant weight, then heated to 212°C in an inert atmosphere, kept for 40 minutes, and then naturally cooled to room temperature to obtain modified wood flour;

[0043] (2) Pre-modified activated carbon

[0044] The raw material activated carbon is sequentially added and soaked in sodium maleate solution and sulfuric acid solution, wherein ...

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Abstract

The invention discloses activated carbon with high desulfurization efficiency, which is prepared by the following steps of: (1) modifying wood flour; (2) pre-modifying activated carbon; and (3) compounding the modified wood flour with the activated carbon; the activated carbon with high desulfurization efficiency prepared by the invention has good desulfurization efficiency; compared with common activated carbon, the adsorption efficiency of the activated carbon prepared by the invention on sulfur dioxide is obviously greatly improved, and the activated carbon can be better applied to flue gasdesulfurization treatment.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to an activated carbon with high desulfurization efficiency. Background technique [0002] my country uses coal as the main energy source, and its coal consumption ranks first in the world, while coal consumption for power generation accounts for more than 50% of the total coal consumption. Coal-fired power generation will emit pollutants such as SO2, NOx and elemental mercury, causing problems such as acid rain, smog, the hole in the ozone layer, and heavy metal pollution. [0003] Therefore, it is necessary to treat the flue gas emitted by thermal power plants to reduce the pollution of the flue gas to the atmosphere. Activated carbon is black powder or block, granular, honeycomb amorphous carbon, and there are also regular crystalline carbons. In addition to carbon elements, activated carbon also contains two types of admixtures: one is chemically combined ele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30B01D53/02
CPCB01D53/02B01D2257/302B01D2258/0283B01J20/20B01J20/28054B01J2220/4825
Inventor 万思露
Owner 合肥俄弈电器有限公司
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