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Method for preparing biomass powdered activated carbon from lichi seeds

A technology of powdered activated carbon and lychee seed, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as powdered biomass activated carbon that has not yet been found, and achieve the goal of promoting healthy development, centralizing pore distribution, and reducing environmental pollution. Effect

Inactive Publication Date: 2016-06-08
柳州东侯生物能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the preparation of powdered biomass activated carbon using litchi core as the main raw material and the corresponding activator.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The method that utilizes litchi nucleus to make biomass powder activated carbon of the present embodiment comprises the following steps:

[0014] A, after the lychee core is naturally air-dried, it is crushed to a particle size of 900 mesh particles with a pulverizer;

[0015] B. Stir and mix the lychee core granules prepared in step A with calcium hydroxide and sodium hydroxide in a mass ratio of 1:1:0.20, and add just enough water to completely soak the mixture in water for 3 hours to expand after drying;

[0016] C, the dried mixture obtained in step B is placed in a hierarchical tubular heating furnace, heated by microwave radiation, and then naturally cooled;

[0017] D. Mix and soak the cooling material obtained in step C with 1.5mol / L hydrochloric acid according to the solid-to-liquid ratio of 1:10, stir and soak, process for 12 hours under constant stirring, filter, and then rinse with distilled water until Neutral, dried, transferred to an autoclave, treated ...

Embodiment 2

[0020] The method that utilizes litchi nucleus to make biomass powder activated carbon of the present embodiment comprises the following steps:

[0021] A, after litchi nucleus is dried through 70 ℃ of heating earlier, be pulverized to particle diameter with pulverizer again and be 1000 mesh particles;

[0022] B. Stir and mix the lychee core granules prepared in step A with calcium hydroxide and sodium hydroxide in a mass ratio of 1:3:0.05, and add just enough water to soak the mixture in water for 4 hours to expand after drying;

[0023] C, the dried mixture obtained in step B is placed in a hierarchical tubular heating furnace, heated by microwave radiation, and then naturally cooled;

[0024] D. Mix and soak the cooling material obtained in step C with 1.5mol / L hydrochloric acid according to the solid-to-liquid ratio of 1:10, stir and soak, process for 12 hours under constant stirring, filter, and then rinse with distilled water until Neutral, dried, transferred to an au...

Embodiment 3

[0027] The method that utilizes litchi nucleus to make biomass powder activated carbon of the present embodiment comprises the following steps:

[0028] A, after litchi core is dried through 100 ℃ of heating earlier, be pulverized to particle diameter with pulverizer again and be 1200 mesh particles;

[0029] B. Stir and mix the lychee core granules prepared in step A with calcium hydroxide and sodium hydroxide in a mass ratio of 1:5:0.15, and add just enough water to soak the mixture in water for 4 hours to expand after drying;

[0030] C, the dried mixture obtained in step B is placed in a hierarchical tubular heating furnace, heated by microwave radiation, and then naturally cooled;

[0031] D. Mix and soak the cooling material obtained in step C with 1.5mol / L hydrochloric acid according to the solid-to-liquid ratio of 1:10, stir and soak, process for 12 hours under constant stirring, filter, and then rinse with distilled water until Neutral, dried, transferred to an auto...

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Abstract

The invention discloses a method for preparing biomass powdered activated carbon from lichi seeds and relates to the technical field of activated carbon. According to the method, the lichi seeds are aired and ground into granules, the granules, calcium hydroxide and sodium hydroxide are mixed in the mass ratio being 1:(1-5):(0.05-0.20), water is added, the mixture is soaked, puffed and dried, the dried mixture is heated with a microwave radiation method and then cooled, hydrochloric acid is added, and the mixture is stirred, soaked, distilled to be neutral with distilled water, dried, treated with steam water and finally dried. Compared with the prior art, the prepared activated carbon has rich micropores, pores in concentrated distribution, continuous hole channels and a large specific surface area, is a good adsorption material and an anti-bacterial agent and can effectively remove blocking ions in the channels after being modified with acid, and the volume of cavities and the hole channels is 50% of the total volume of the biomass powdered activated carbon.

Description

technical field [0001] The invention relates to the technical field of activated carbon production, in particular to a method for producing biomass powder activated carbon by using litchi seeds. Background technique [0002] Activated carbon is a porous carbon material with developed pore structure and large specific surface area. It has stable physical and chemical properties, high mechanical strength, insoluble in water and organic solvents, and has the advantages of easy regeneration and utilization. It is an excellent adsorbent and Catalyst carrier is widely used in food processing, metallurgy, medicine, chemical industry, military, environmental protection and energy and other fields. The pore structure of activated carbon determines its physical and chemical properties. Due to the large amount of agricultural by-products, the high rate of low-cost carbon production, and the utilization of resources and environmental protection, many agricultural by-products are often u...

Claims

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Application Information

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IPC IPC(8): C01B31/12C01B31/10C01B32/336
CPCC01P2006/14C01P2006/90
Inventor 韦泉
Owner 柳州东侯生物能源科技有限公司
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