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Special activated charcoal for gasoline vapor adsorption and preparation method thereof

A technology for adsorbing gasoline and activated carbon, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of unsatisfactory decolorization force and adsorption performance, achieve excellent adsorption and decolorization performance, high mechanical strength, reduce adsorption and decolorization carbon consumption and The effect of sewage discharge

Active Publication Date: 2007-09-26
CHAOYANG SHENYUAN ACTIVE CARBON
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Although the activated carbon prepared by this method has good particle strength, its decolorization power and adsorption performance are still not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: 100kg raw material apricot shells are put into carbonization furnace at 500 ± 50 ℃ of carbonization 2 hours, after being cooled to room temperature, carbonization material is put into dipping tank, with 5kg 85% phosphoric acid, 8kg magnesia and 100kg water, Prepare an impregnating aqueous solution, impregnate the carbonized material (the standard of the liquid level of the impregnated liquid is - subject to immersion in the carbon layer), soak at room temperature for 6-8 hours; then put the impregnated carbonized material in a drying oven at 400± Drying at 50°C; the carbonized material carrying the impregnation is activated at 800±50°C for 8 to 12 hours under the condition of passing overheated steam, and then the activated material is pickled with 10% hydrochloric acid aqueous solution. The material is dried at 400±50°C for 1 to 2 hours, and crushed to 20 to 60 mesh particles.

Embodiment 2

[0021] Example 2: Use wood tar as a binder and add coal powder to press into a columnar shape. Take 100kg of pressed material and carbonize it in a carbonization furnace at 500±50°C for 3 hours. After cooling to room temperature, put the carbonized material into a dipping tank. 5kg of 85% phosphoric acid, 10kg of magnesia and 100kg of water are prepared into an impregnating aqueous solution, impregnated with carbonized material (the standard of the liquid level of the impregnating solution is—the standard for immersing the charcoal layer), and soaking at room temperature for 6-8 hours; The impregnated carbonized material is dried in a drying furnace at 400±50°C; the carbonized material carrying the impregnated material is activated for 8-12 hours at 800±50°C under the condition of passing through superheated steam, and then treated with 10% Pickle with hydrochloric acid aqueous solution, then dry at 400±50°C for 1-2 hours, and crush to 20-60 mesh particles.

[0022] ...

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PUM

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Abstract

The invention discloses a single-purpose active carbon absorbing petrol steam and preparing method, which comprises the following steps: making hard shell or coal as raw material; adopting materialized dipping activation to deal charring material; getting active carbon; making the steeping liquor consist by phosphoric acid and magnesium oxide; setting the proportion by weight of each group at phosphoric acid : magnesium oxide = 1:1.5- 2.5; making iodine sorption value of active carbon at 800-1000mg / g; making adsorption rate of product petrol steam at 26-45%; setting mechanical strength>=95%; charring; dipping; drying; activating process; getting the product.

Description

technical field [0001] The invention relates to a granular activated carbon used for adsorption and decolorization, in particular to a special activated carbon used for absorbing gasoline vapor and a preparation method of the activated carbon. Background technique [0002] The pollution of the environment by automobiles has become the first source of urban air pollution. The pollution of the atmosphere by automobiles mainly comes from the evaporation of automobile exhaust and fuel gas, of which exhaust pollution accounts for 70% and fuel vapor pollution accounts for 30%. At the end of the 1960s, the United States studied the use of activated carbon to absorb gasoline vapor in automobiles. Due to the high technical content of this activated carbon, wood is used as raw material and the production cost is relatively high. At present, this special activated carbon relies on imports in China, and the import price is about 8 per ton. ~100,000 yuan / ton. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12C01B31/08B01J20/30
Inventor 李国君古可隆
Owner CHAOYANG SHENYUAN ACTIVE CARBON
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