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Method for preparing tung cell-based active carbon by zinc chloride chemical activation method

A chemical activation and zinc chloride technology, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of wasting biomass resources, increasing the production cost of tung oil, and increasing the cost of feed

Inactive Publication Date: 2008-12-31
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because it must be detoxified before being used as animal feed, the cost of the feed is increased, thus limiting the popularization and application, and a large amount of tung shells are still thrown away as waste, which not only wastes biomass resources, but also pollutes the environment. Also increased the production cost of tung oil

Method used

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  • Method for preparing tung cell-based active carbon by zinc chloride chemical activation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1) Add 50 grams of zinc chloride reagent and 100 grams of tung husks that have been washed, crushed and dried in distilled water to make a liquid, stir and soak at 80°C for 2 hours, then evaporate at 110°C water, and dried for 12 hours to form a zinc chloride / tung shell mixture for later use.

[0014] 2) Put the zinc chloride / tung husk mixture in a traditional heating high-temperature activation furnace, first pass nitrogen gas for 30 minutes at a rate of 300mL / min; , for activation, the activation time is 260min, and the primary product of activated carbon is obtained.

[0015] 3) Put the primary product of activated carbon in a high-temperature activation furnace heated by microwave radiation with controllable power, and first pass nitrogen gas at a rate of 200mL / min for 30 minutes, then set the microwave power at 500-650W under the protection of nitrogen atmosphere, and start microwave radiation Heating, microwave irradiation time is 15min, so that carbonization and...

Embodiment 2

[0019] 1) Add 50 grams of zinc chloride reagent and 150 grams of tung husks that have been washed, crushed and dried in distilled water to make a liquid, stir and soak at 80 ° C for 2 hours, then evaporate at 100 ° C water, and dried for 10 hours to form a zinc chloride / tung shell mixture for later use.

[0020] 2) Put the zinc chloride / tung husk mixture in a traditional heating high-temperature activation furnace, and first pass nitrogen gas at a rate of 300mL / min for 30min; then, under the protection of a nitrogen atmosphere, raise the temperature to 650 ℃, for activation, the activation time is 160min, the zinc chloride / tung shell mixture is subjected to carbon activation reaction, and the primary product of activated carbon is obtained.

[0021] 3) Place the primary product of activated carbon in a high-temperature activation furnace heated by microwave radiation with controllable power. First, nitrogen gas is introduced at a rate of 250 mL / min for 30 minutes. Then, under ...

Embodiment 3

[0025] 1) Add 50 grams of zinc chloride reagent and 30 grams of tung husks that have been washed, crushed and dried in distilled water to make a liquid, stir and soak at 80°C for 2 hours, then evaporate at 100°C water, and dried for 11 hours to form a zinc chloride / tung shell mixture for later use.

[0026] 2) Put the zinc chloride / tung husk mixture in a traditional heating high-temperature activation furnace, first pass nitrogen gas at a rate of 300mL / min for 30min; then, under the protection of nitrogen atmosphere, increase the temperature to 900 ℃, for activation, the activation time is 30min, the zinc chloride / tung shell mixture is subjected to carbon activation reaction, and the primary product of activated carbon is obtained.

[0027] 3) Place the primary product of activated carbon in a high-temperature activation furnace heated by microwave radiation with controllable power. First, nitrogen gas is introduced at a rate of 250mL / min for 30 minutes. Then, under the protec...

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Abstract

The invention relates to a method which can adopt the zinc chloride chemical activation method to prepare tung nutshell into active carbon. The technical proposal is as follows: 1) zinc chloride and tung nut shell are added into distilled water, stirred and soaked at 80DEG C and moisture is evaporated. 2) The mixture is placed in a high temperature activation furnace and nitrogen is firstly pumped in; at the speed of 200-300mL / min and under the protection of nitrogen, the mixture is heated to 350-900DEG C for activating reaction which lasts for 30-300 min to prepare primary products. 3) The mixture is arranged in a microwave high temperature activation furnace and heated by microwave radiation under the protection of nitrogen, the microwave radiation lasts for 8-20 min, and carbonization and activation are finished at the same step to prepare the primary products of active carbon. 4) The products are immersed in hydrochloric acid, then soaked by hot distilled water for two times, dried at 105 DEG C for 12 hours and weighed for calculating the yield. The method can successfully transform tung nutshell into active carbon, the specific surface area and the pore volume of which can reach 1602m <2> / g and 1.115mL / g respectively; the maximum methylene blue adsorption value can reach 300mg / g, while copper ion adsorption rate can exceed 99%.

Description

technical field [0001] The invention relates to a method for preparing activated carbon, in particular to a method for preparing activated carbon from tung shells produced when tung oil is extracted from tung oil by using a zinc chloride chemical activation method. Background technique [0002] Activated carbon is a carbonaceous substance with developed pore structure, huge specific surface area and excellent adsorption performance. It has functional groups containing oxygen, nitrogen, sulfur and other elements on its surface. It has stable chemical and physical properties and can be used at different temperatures and pHs. It is insoluble in water and most other solvents. Therefore, activated carbon, as an excellent adsorbent, has been widely used in environmental protection, chemical industry, food processing, hydrometallurgy, pharmaceutical refining, military chemical protection and other fields. [0003] At present, the raw materials for preparing activated carbon mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C01B31/10C01B32/336
Inventor 陈庆华周丕严钱庆荣林云珠黄宝铨刘欣萍肖荔人许兢
Owner FUJIAN NORMAL UNIV
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