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Preparation method of high-adsorbability activated carbon

A technology of activated carbon and high adsorption, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of poor adsorption capacity of activated carbon and achieve the effect of large specific surface area

Inactive Publication Date: 2019-02-01
JINGZHOU HUARONG ACTIVATED CARBON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing activated carbon has poor adsorption capacity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation method of the high adsorption performance activated carbon in the present embodiment may further comprise the steps:

[0028] S1, the pulverization of activated carbon: take walnut shell activated carbon as raw material, after grinding and pulverizing, pass through a 160-180 mesh sieve to obtain pulverized walnut shell activated carbon;

[0029] S2, pickling of activated carbon: take the pulverized walnut shell activated carbon in step S1 and mix it with acid, add water to dilute, then place it in a reaction kettle for pickling, pickle until the mass content of iron in the pulverized walnut shell activated carbon is ≤ 0.02%, the mass content of ash≤2.8%, obtain the walnut shell activated carbon after pickling; Wherein, pickling time is 2h, and the add-on of described acid is to be 15% of the mass of walnut shell activated carbon after described crushing, described Acidic is hydrochloric acid, and the addition of described water is 10 times of described p...

Embodiment 2

[0034] The preparation method of the high adsorption performance activated carbon in the present embodiment may further comprise the steps:

[0035] S1, the pulverization of activated carbon: take walnut shell activated carbon as raw material, after grinding and pulverizing, pass through a 160-180 mesh sieve to obtain pulverized walnut shell activated carbon;

[0036] S2, pickling of activated carbon: take the pulverized walnut shell activated carbon in step S1 and mix it with acid, add water to dilute, then place it in a reaction kettle for pickling, pickle until the mass content of iron in the pulverized walnut shell activated carbon is ≤ 0.02%, the mass content of ash≤2.8%, obtain the walnut shell activated carbon after pickling; Wherein, pickling time is 5h, and the add-on of described acid is to be 25% of the mass of walnut shell activated carbon after described crushing, described Acidic is hydrochloric acid, and the addition of described water is 15 times of described p...

Embodiment 3

[0041] The preparation method of the high adsorption performance activated carbon in the present embodiment may further comprise the steps:

[0042] S1, the pulverization of activated carbon: take walnut shell activated carbon as raw material, after grinding and pulverizing, pass through a 160-180 mesh sieve to obtain pulverized walnut shell activated carbon;

[0043] S2, pickling of activated carbon: take the pulverized walnut shell activated carbon in step S1 and mix it with acid, add water to dilute, then place it in a reaction kettle for pickling, pickle until the mass content of iron in the pulverized walnut shell activated carbon is ≤ 0.02%, the mass content of ash≤2.8%, obtain the walnut shell activated carbon after pickling; Wherein, pickling time is 3.5h, and the add-on of described acid is 20% of the walnut shell activated carbon quality after described crushing, so Described acid is hydrochloric acid, and the add-on of described water is 13 times of walnut shell gac...

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PUM

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Abstract

The invention discloses a preparation method of high-adsorbability activated carbon. The preparation method includes the steps: S1 crushing activated carbon; S2 activated carbon acid pickling: takingcrushed walnut shell activated carbon acquired in the step S1 to mix the activated carbon and acid, adding water to dilute mixture, and placing diluted mixture into a reaction kettle to perform acid pickling until the mass content of iron in the crushed walnut shell activated carbon is smaller than or equal to 0.02% and the mass content of ash is smaller than or equal to 2.8% to obtain acid-pickled walnut shell activated carbon; S4 adding alkali salt into water-washed walnut shell activated carbon acquired in step S3, and soaking mixture for 2-5 hours to obtain soaked walnut shell activated carbon; S5 taking the soaked walnut shell activated carbon acquired in the step S4, and performing ultrasonic cleaning, filtering, drying and forming to obtain the high-adsorbability activated carbon. The alkali salt accounts for 2%-5% of the weight of the water-washed walnut shell activated carbon and can include sodium carbonate or sodium hydrogen carbonate. The activated carbon is large in specific surface area and developed in pore structure.

Description

technical field [0001] The invention relates to the technical field of activated carbon processing, in particular to a preparation method of activated carbon with high adsorption performance. Background technique [0002] Activated carbon is black powder or block, granular, honeycomb amorphous carbon, and there are also regularly arranged crystalline carbon. In addition to carbon elements, activated carbon also contains two types of admixtures: one is chemically combined elements, mainly oxygen and hydrogen, these elements are left in the carbon due to incomplete carbonization, or in the activation process, foreign Non-carbon elements are chemically combined with the surface of activated carbon; another type of admixture is ash, which is the inorganic part of activated carbon, and ash in activated carbon is easy to cause secondary pollution. Activated carbon is a hydrophobic adsorbent prepared by high-temperature carbonization and activation from carbon-containing substance...

Claims

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Application Information

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IPC IPC(8): C01B32/324
CPCC01B32/324
Inventor 聂伟袁志雄聂秋菊晏才文
Owner JINGZHOU HUARONG ACTIVATED CARBON CO LTD