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Absorbent charcoal special for adsorbing gasoline steam

A technology for adsorbing gasoline and activated carbon, which is applied in the field of granular activated carbon, can solve the problems of unsatisfactory decolorization and adsorption performance, and achieve the effects of excellent adsorption and decolorization performance, excellent ability to remove macromolecular pigments, and high mechanical strength

Inactive Publication Date: 2008-10-29
李国君
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  • Abstract
  • Description
  • Claims
  • 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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  • Absorbent charcoal special for adsorbing gasoline steam
  • Absorbent charcoal special for adsorbing gasoline steam
  • Absorbent charcoal special for adsorbing gasoline steam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 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

[0024] 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.

[0025] Process pa...

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Abstract

The invention discloses a special activated carbon for absorbing fuel vapor, which takes the hard nut shell or coal as the raw material and makes the activated carbon by treating the carbonized material with a method of physicochemical impregnation activation. The impregnating solution mainly consists of phosphoric acid and magnesium oxide while the weight proportion of the phosphoric acid and the magnesium oxide is 1:1.5 to 2.5. The iodine sorption value of the ready-made activated carbon is 800mg to 1000mg per gram. The vapor adsorption rate of the finished gasoline is 26 to 45 percent while the mechanical strength is no less than 95 percent. Treated by carbonization, impregnation, drying, and activation, the raw material can be made into products. The product of the invention not only has the excellent ability to absorb and remove the macromolecule pigment but also has higher mechanical strength with normal physical carbon. The product can be widely used. The activated carbon in the utilization of adsorption process can greatly reduce absorption carbon consumption and sewage discharge and can reduce pollution to the water and air caused by absorption. The activated carbon can be repeatedly used and regenerated instead of being used for only one time. The absorption decolorization system can be continuously operated for a long time.

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 adsorbing gasoline vapor. 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. [0003] The applicant disclosed the "Preparation Method for Adsorbing Gasol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 李国君
Owner 李国君
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