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High-temperature crystallite bamboo charcoal and preparation method thereof

A technology of microcrystalline bamboo charcoal and high temperature, which is applied in the field of high-temperature microcrystalline bamboo charcoal and its preparation, can solve the problems of high refining temperature, difficulty in obtaining dense bamboo charcoal products, poor quality stability, etc., and achieve the effect of increasing the far-infrared radiation rate

Active Publication Date: 2013-12-25
桂林新竹大自然生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The earthen kiln is cheap, the refining temperature is high, and the density of bamboo charcoal is high, but the quality stability is poor and the yield is not high
[0011] Due to the limitations of equipment and technology for firing bamboo charcoal, it is difficult to obtain bamboo charcoal products with both density, porosity, crystallinity and other physical properties, which restricts the comprehensive functions and wide uses of bamboo charcoal products.

Method used

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  • High-temperature crystallite bamboo charcoal and preparation method thereof
  • High-temperature crystallite bamboo charcoal and preparation method thereof
  • High-temperature crystallite bamboo charcoal and preparation method thereof

Examples

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Embodiment 1

[0032] A preparation method of high-temperature microcrystalline bamboo charcoal, comprising the steps of:

[0033] (1) Put the bamboo raw material into the kiln from the feed port, and gradually dry the bamboo in the furnace with the heat of part of the bamboo combustion until it maintains spontaneous combustion;

[0034] (2) When the temperature in the furnace reaches 450°C, gradually reduce the exhaust port and air inlet, and control the temperature of the kiln between 450-500°C to maintain the spontaneous combustion of bamboo and gradually carbonize;

[0035] (3) Adjust the air inlet and smoke outlet to increase the furnace temperature. When it rises to 850°C, send superheated steam from the air supply pipe to activate the low-temperature bamboo charcoal and keep it for 2 hours;

[0036] (4) Slowly feed nitrogen gas from the air supply pipe to make the medium-temperature bamboo charcoal in the furnace approach to the state of oxygen isolation. Control the firepower so tha...

Embodiment 2

[0040] A preparation method of high-temperature microcrystalline bamboo charcoal, comprising the steps of:

[0041] (1) Put the bamboo raw material into the kiln from the feed port, and gradually dry the bamboo in the furnace with the heat of part of the bamboo combustion until it maintains spontaneous combustion;

[0042] (2) When the temperature in the furnace reaches 450°C, gradually reduce the exhaust port and air inlet, and control the temperature of the kiln between 450-500°C to maintain the spontaneous combustion of bamboo and gradually carbonize;

[0043] (3) Adjust the air inlet and smoke outlet to raise the furnace temperature. When it rises to 850°C, send superheated steam from the air supply pipe to activate the low-temperature bamboo charcoal and keep it for 4 hours;

[0044] (4) Slowly feed nitrogen gas from the air supply pipe to make the medium-temperature bamboo charcoal in the furnace approach to the state of oxygen isolation. Control the firepower so that t...

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Abstract

The invention discloses a high-temperature crystallite bamboo charcoal and a preparation method thereof. The preparation method comprises the steps of low-temperature carbonization, intermediate-temperature activation and high-temperature crystallization. According to the invention, the far infrared radiation ratio, the anion generating capacity and the adsorption function of a bamboo charcoal product can be effectively improved, thereby meeting the demand in the fields in which the bamboo charcoal is taken as an additive of an environmental cleaning functional coating, an electromagnetic shielding functional material and a healthcare textile material in the current market.

Description

technical field [0001] The invention relates to bamboo charcoal products, in particular to a high-temperature microcrystalline bamboo charcoal and a preparation method thereof. Background technique [0002] Bamboo charcoal is a solid product obtained by placing bamboo in a charcoal kiln and thermally decomposing it at high temperature. The bamboo carbonization process is generally divided into five stages: drying, pre-carbonization, carbonization, calcination and cooling. [0003] Bamboo drying: Use the hot flue gas generated by fuel combustion to smoke and dry. The temperature in the charcoal kiln is generally less than 150°C. The main purpose is to remove the moisture in the bamboo, so that the shape and size of the bamboo are not easy to change. [0004] Bamboo pre-carbonization: The temperature in the charcoal kiln is 150°C to 270°C, the thermal decomposition of bamboo is relatively obvious, and acetic acid and tar begin to be produced. [0005] Bamboo carbonization: T...

Claims

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Application Information

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IPC IPC(8): C01B31/10C01B32/336
Inventor 韦仲华韦宇洪
Owner 桂林新竹大自然生物材料有限公司
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