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Composite activated carbon desulphurization agent and its prepn. method

A technology of composite activated carbon and desulfurizer, applied in separation methods, chemical instruments and methods, separation of dispersed particles, etc., can solve problems such as high operating costs, secondary pollution, and easy moisture absorption

Inactive Publication Date: 2006-06-28
张新长
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to provide a composite activated carbon desulfurizer and its preparation method to solve the problems of easy moisture absorption, easy bonding, secondary pollution, large investment, high operating cost and low desulfurization rate existing in the currently used desulfurizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] The invention includes the following raw materials: lime and thiourea by-products.

[0069] Lime: the chemical symbol is CaO, the chemical composition is CaO content > 95%, and the physical state is 0.5-3mm white granular.

[0070] Thiourea by-product: The main component of thiourea by-product is calcium hydroxide Ca(OH) 2 , 68% content, 3.8% magnesium oxide content, 5% activated carbon content, and more than 23% moisture. The physical state is 80 mesh black powder.

[0071] The present invention prepares raw materials by the following weight percentages:

[0072] Lime: 40-80%;

[0073] Thiourea by-product: 20-60%.

[0074] production method:

[0075] Preparation of raw materials: prepare raw materials according to the above formula.

[0076] High-temperature and high-pressure firing: In an autoclave with a diameter of 1.2×5 meters, the by-products of lime and thiourea react in the autoclave for 30 to 90 minutes, then the temperature rises to 260 to 280°C and the ...

Embodiment 2

[0093] The invention includes the following raw materials: lime, thiourea by-product, acidified weathered coal.

[0094] Lime: the chemical symbol is CaO, the chemical composition is CaO content > 95%, and the physical state is 0.5-3mm white granular.

[0095] Thiourea by-product: The main component of thiourea by-product is calcium hydroxide Ca(OH) 2 , 68% content, 3.8% magnesium oxide content, 5% activated carbon content, and more than 23% moisture. The physical state is 80 mesh black powder.

[0096] Acidified weathered coal: The main component of acidified weathered coal is humic acid, which contains a variety of chemical bonds, and its physical state is 120 mesh black powder. Acidified weathered coal contains a variety of chemical bonds and has a strong adsorption capacity. The preparation method of acidified weathered coal: Add the existing product weathered coal into sulfuric acid with a weight of 20% of the weight of the weathered coal and a concentration of 60%, re...

Embodiment 3

[0122] The invention includes the following raw materials: lime, by-products of thiourea, and activated carbon.

[0123] Lime: the chemical symbol is CaO, the chemical composition is CaO content > 95%, and the physical state is 0.5-3mm white granular.

[0124] Thiourea by-product: The main component of thiourea by-product is calcium hydroxide Ca(OH) 2 , 68% content, 3.8% magnesium oxide content, 5% activated carbon content, and more than 23% moisture. The physical state is 80 mesh black powder.

[0125] Activated carbon: The chemical symbol of the activated carbon is C, the chemical composition is activated carbon c, and the physical state is 100 mesh black powder.

[0126] The present invention prepares raw materials by the following weight percentages:

[0127] Lime: 40-70%;

[0128] Thiourea by-product: 20-56%;

[0129] Activated carbon: 3-15%.

[0130] production method

[0131] Raw material preparation: Prepare raw materials according to the formula.

[0132] High...

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Abstract

An activated carbon type composite desulfurizing agent is proportionally prepared from lime, thiourea by-product, activated carbon, and acidified weathered coal through reaction between line and thiourea to raise temp to 260 deg.C and pressure to 1.5 / Pa, vacuum exhaust of gas, pressurizing by 1.5-2 / Pa, heating to 260 deg.C, holding them for 2 hr, cooling, mixing with others and grinding. Its advantage is high effect to adsorb waste gas and water and de-sulfurize.

Description

technical field [0001] The invention relates to a desulfurizer used in the fields of flue gas desulfurization and acid-containing wastewater treatment, in particular to a composite activated carbon desulfurizer and a preparation method thereof. Background technique [0002] In coal-fired power plants, coal coke chemical industry, chemical waste gas, petrochemical flue gas desulfurization, and wastewater treatment industries, desulfurization treatment must be carried out in order to adapt to environmental governance and discharge standards. [0003] At present, environmental pollution is mainly air and wastewater pollution, and most sewage enterprises have realized the seriousness of the two types of pollution. Flue gas from coal-fired power plants and coal coke chemical industry contains SO 2 , SO 3 、H 2 Harmful substances such as S 3000mg / m 3 Above, the chemical industry such as the titanium dioxide industry discharges wastewater containing more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/48B01D53/81
Inventor 张新长
Owner 张新长