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Preparation method for active carbon

A technology of activated carbon and activator, applied in the field of activated carbon, can solve the problems of waste of resources, environment and pollution, and achieve the effect of reducing environmental pollution and improving practicability.

Inactive Publication Date: 2014-05-07
NANJING XIRUISI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Peanut is the main oil crop in my country. As an agricultural by-product, peanut shells are often thrown away as waste, causing a great waste of resources and environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Wash, dry, crush the peanut shells, pass through a 40-mesh sieve, and set aside; weigh 10g of peanut shell raw materials at room temperature, mix the peanut shells with the activator at a mass ratio of 1:2.5, soak for 12 hours, filter and drain; Adjust the activation temperature to 350°C), activate carbon for 2.5 hours to obtain semi-finished activated carbon, wash the semi-finished product with hydrochloric acid, and then wash with distilled water to pH = 7, dry at 110~120°C, grind, and pass through a 200-mesh sieve to obtain activated carbon finished product. After testing, the product meets the quality requirements, and the yield of activated carbon is high.

Embodiment 2

[0017] Wash, dry, crush the peanut shells, pass through a 40-mesh sieve, and set aside; weigh 10g of peanut shell raw materials at room temperature, mix the peanut shells with the activator at a mass ratio of 1:3.5, soak for 12 hours, filter and drain; Adjust the activation temperature to 450°C), activate carbon for 3.5 hours to obtain semi-finished activated carbon, wash the semi-finished product with hydrochloric acid, and then wash with distilled water to pH = 7, dry at 110~120°C, grind, and pass through a 200-mesh sieve to obtain activated carbon finished product. After testing, the product meets the quality requirements, and the yield of activated carbon is high.

Embodiment 3

[0019] Wash, dry, crush the peanut shells, pass through a 40-mesh sieve, and set aside; weigh 10g of peanut shell raw materials at room temperature, mix the peanut shells with the activator at a mass ratio of 1:4.5, soak for 12 hours, filter and drain; Adjust the activation temperature to 550°C), activate carbon for 4.5 hours to obtain semi-finished activated carbon, wash the semi-finished product with hydrochloric acid, and then wash with distilled water to pH = 7, dry at 110-120°C, grind, and pass through a 200-mesh sieve to obtain activated carbon finished product. After testing, the product meets the quality requirements, and the yield of activated carbon is high.

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PUM

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Abstract

The invention discloses a preparation method for active carbon. The preparation method comprises: first, peanut shells are washed, dried, crushed and sieved with a 40-mesh sieve for standby; second, at the room temperature, the peanut shells and activating agents are mixed according to a mass ratio of 1:3-5, dipping is carried out for 12-24h, and pumping filtration and draining are carried out; third, the temperature is adjusted to the activation temperature 300-800 DEG C, charcoal is activated for above 0.5h, and semi-finished product active carbon is obtained; fourth, the semi-finished product is washed in hydrochloric acid, then is washed in distilled water until the pH value is 7, then dried at the temperature of 110-120 DEG C, ground, sieved with a 200-mesh sieve, and an active carbon finished product is obtained. Compared with the prior art, the method employs peanut shells to prepare active carbon, waste is used again, environmental pollution is reduced, the prepared active carbon can be used for environmental cleaning. The method has good practicality.

Description

technical field [0001] The invention relates to activated carbon, in particular to a preparation method of peanut shell activated carbon. Background technique [0002] Activated carbon is a high-quality adsorbent with strong chemical stability, mechanical strength, acid resistance, alkali resistance, heat resistance, insoluble in water and organic solvents, and easy regeneration after use. It is widely used in food processing, medicine, metallurgy, etc. , chemical industry, environmental protection and other aspects have a wide range of uses. The raw materials for preparing activated carbon include wood, coke, petroleum coke, fruit shells, etc., and its production methods include water vapor or flue gas activation, high-temperature carbonization, and chemical carbonization activation. Due to the global energy shortage and the implementation of national energy conservation and emission reduction policies, the exploration of new raw materials and processes for activated carbo...

Claims

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Application Information

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IPC IPC(8): C01B31/12C01B32/324C01B32/348
Inventor 涂秀芹
Owner NANJING XIRUISI CHEM
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