Active carbon and preparation method thereof

A technology of activated carbon and mass concentration, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as poor taste, secondary environmental pollution, and drug resistance, so as to reduce production costs, save energy, and be good The effect of social and economic benefits

Active Publication Date: 2017-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, biological organic matter contains N, S and other elements, and incineration will produce a large amount of environmental pollutants, which can cause secondary environmental pollution
At present, some manufacturers use centrifugal dehydration, fl...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take by weighing 100g of cellulose ethanol fermentation residue, press filter and rinse with water for 5 times to remove organic acids and inorganic salts of the residue, and then soak in a solution containing 3% chitosan, 0.8% glutaraldehyde and dodecylbenzene Sodium sulfonate 0.2% mixed aqueous solution was immersed for 6 hours under the condition of ultrasonic power of 0.5W / ml and ultrasonic working frequency of 80kHZ, then placed in a carbonization furnace, heated to 200°C for 20 minutes under air condition, and obtained solid mixture. The solid-liquid mixture was heated to 600°C in an ammonia atmosphere, and after carbonization for 240 min, the temperature was continued to rise to 750°C and water vapor was introduced for activation. The heating rate was 15°C / min, the activation time was 30 min, and the water vapor space velocity was 0.3 L. / min. After the activation, the activated carbon with high adsorption performance was prepared in an inert atmosphere down to ...

Embodiment 2

[0022] Weigh 100g of cellulose ethanol fermentation residue, press filter and rinse with water for 5 times to remove the organic acid and inorganic salts of the residue, and soak it in a solution containing 5% chitosan, 6% glutaraldehyde and dodecylbenzene In a mixed solution of 2% sodium sulfonate, the ultrasonic power is 15W / ml, and the ultrasonic working frequency is 25kHZ. After immersion for 2 hours, put it in a carbonization furnace, and heat it to 150°C for 60 minutes under air conditions to obtain a solid mixture. The solid-liquid mixture was heated to 800 °C in an ammonia atmosphere, and after carbonization for 60 min, it was further heated to 950 °C and activated with water vapor. The heating rate was 20 °C / min, the activation time was 10 min, and the water vapor space velocity was 0.5 L. / min. After the activation, the activated carbon with high adsorption performance was prepared in an inert atmosphere down to 100 °C with a specific surface area of ​​1280 m 2 / g,...

Embodiment 3

[0024] Same as Example 1, the difference is that the temperature is raised to 600°C under a nitrogen atmosphere to prepare activated carbon with a specific surface area of ​​1205 m 2 / g, mesoporosity 48.9%, iodine adsorption value 980 mg / g, methylene blue adsorption value 182 mg / g.

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Abstract

The invention discloses a preparation method of active carbon. The preparation method comprises the following steps: (1) performing drip washing on residues obtained in the process of producing ethanol through cellulose fermentation so as to wash off organic acids and inorganic salts in the residues; (2) soaking the washed residues in the step (1) by using a mixed solution of chitosan, glutaraldehyde and sodium dodecyl benzenesulfonate; (3) putting the soaked residues in the step (2) into a carbonizing furnace, heating to 150-200 DEG C in an air atmosphere, treating for 20-60min, then raising the temperature to 600-800 DEG C in an inert atmosphere, and carbonizing for 60-240min (4) after carbonizing, inflating water vapor or CO2 for treating for 10-30 min, and cooling to prepare the active carbon. By the preparation method, with biomass-fermented residues obtained during production of the cellulosic ethanol as raw materials, the active carbon with a high adsorptive property is prepared.

Description

technical field [0001] The invention relates to an activated carbon and a preparation method thereof, in particular to a preparation of activated carbon from residues produced by fermentation of cellulose raw materials to produce ethanol and a preparation method thereof. Background technique [0002] Among various renewable energy sources, biomass energy is an important renewable energy source in the future energy field. Cellulose is the most abundant biomass resource on the earth. Therefore, the use of cellulose to ferment ethanol has great development potential and market space. At present, the technology of producing fuel ethanol by fermenting cellulose as raw material is basically mature. The principle is to hydrolyze straw and other plant cellulose to obtain reducing monosaccharides, such as xylose and glucose, and then ferment the reducing monosaccharides, Fuel ethanol can be obtained after rectification, and the bio-fermentation residue produced is difficult or very ...

Claims

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Application Information

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IPC IPC(8): C01B32/324C01B32/342
Inventor 张蕾张鹏郭宏山李宝忠朱卫
Owner CHINA PETROLEUM & CHEM CORP
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