A preparing method of active bamboo charcoal powder

A technology of activated bamboo charcoal and bamboo powder, which is applied in the field of agricultural and sideline products processing, can solve the problems of affecting the density of bamboo charcoal, small volume of dry distillation kettle, low refining temperature, etc., and achieve the effect of fast adsorption speed, high adsorption capacity and high mechanical strength

Inactive Publication Date: 2016-05-18
庄亚林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the refining temperature is not raised, the density of bamboo charcoal will be affected; the volume of the retort is small, and the output of bamboo charcoal is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1, a kind of preparation method of active bamboo charcoal powder, used raw material is bamboo, forms through drying, pulverizing, alkali immersion, drying, carbonization, activation, washing, drying, pulverizing; Described drying temperature is 100 -110°C, drying time 4-6 hours; the crushing is to crush the bamboo chips into bamboo powder with a pulverizer, and pass through an 80-mesh sieve; the alkaline leaching is to use bamboo powder with a mass concentration of 25-35%. Soaking in sodium hydroxide solution, the temperature of the soaking solution is controlled at 25-40°C, and the soaking time is 24-48 hours; the carbonization is to heat the dried bamboo powder to 550-650°C in a vacuum box, and keep it warm for 30- 45 minutes; the activation is to heat the carbonized bamboo powder to 800-900° C. in a vacuum box, and keep it warm for 10-20 minutes; the washing is to use deionized washing to neutral.

Embodiment 2

[0013] Embodiment 2, in the preparation method of the active bamboo charcoal powder described in embodiment 1: described drying temperature is 105 ℃, and drying time is 5 hours.

Embodiment 3

[0014] Embodiment 3, in the preparation method of activated bamboo charcoal powder described in embodiment 1: described alkali leaching is that bamboo powder is soaked with 30% sodium hydroxide solution, and soaking liquid temperature is controlled at 35 ℃, and soaking time is 36 hours.

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PUM

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Abstract

A preparing method of active bamboo charcoal powder is disclosed. Bamboo is adopted as a raw material. The method includes steps of drying, smashing, alkali dipping, drying, charring, activating, washing, drying and smashing. The drying temperature is 100-110 DGE C and drying time is 4-6 h. The first smashing step is a step of smashing bamboo sheets with a smashing machine into bamboo powder and sieving with a sieve having a size of 80 meshes. The alkali dipping step is a step of dipping the bamboo powder with a sodium hydroxide solution having a mass concentration of 25-35%, with the temperature of the dipping solution being controlled to be 25-40 DEG C. The charring step is a step of heating the dried bamboo powder in a vacuum oven and maintaining the temperature. The activating step is a step of heating the charred bamboo powder in the vacuum oven and maintaining the temperature. The washing step is a step of washing with deionized water until neutrality. The method is reasonable in design and simple and convenient in operation. The prepared active bamboo powder is higher in specific surface, high in mechanical strength, developed in fine hole structure, high in adsorption speed, and high in adsorption capacity.

Description

technical field [0001] The invention relates to a processing method of agricultural by-products, in particular to a preparation method of activated bamboo charcoal powder. Background technique [0002] Bamboo charcoal activated carbon has a wide range of applications. In agriculture, it is a carrier of soil microorganisms and organic nutrients. It contains a part of the minerals needed for biological growth and can maintain a good nutritional balance. In the material industry, it can be made into a part of new composite materials. Such as ultrafine powder bamboo charcoal cloth, porous bamboo charcoal ceramics, powder molding composite materials, fillers that can also be made into degradable plastics, feed additives, etc. The wood-based panels made of bamboo charcoal can effectively reduce the pollutants of building residues and protect the space environment; in architectural decoration, bamboo charcoal is placed on the ground floor or under the floor of the building to preve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
Inventor 庄亚林
Owner 庄亚林
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