Bamboo charcoal is bamboo park charcoal kiln in, the solid product that gets after pyrolysis produces below high temperature.
The charcoal that burn bamboo has a lot of similar places at burning coal, but the style of charcoal kiln and the process that burn charcoal are having differ apparently. General component is bamboo charcoal dry, bamboo beforehand calcination of charcoal of char, bamboo char, bamboo and refrigeration 5 phase.
One, bamboo is dry. The blazing flue gas that uses fuel combustion generation undertakes smoking cigarette dry, need a week to influence time commonly. At this moment, the temperature inside charcoal kiln is less than 150 ℃ commonly, basically be the moisture in take out bamboo, make the shape size of bamboo is changed not easily. If of bamboo dry undertake apart with the process that burns charcoal, need builds bamboo additionally to fume smoke oast.
2, bamboo beforehand char. At this moment the temperature inside charcoal kiln 270 ℃ of 150 ℃ ～ , the be heated of bamboo is decomposed more apparent, begin to produce acetic acid and tar.
3, bamboo char. At this moment the temperature inside charcoal kiln 360 ℃ of 270 ℃ ～ , bamboo produces very fast pyrolysis, generation discloses result in great quantities, it is the main stage of the child of natural high polymer such as acetic acid, tar. Inside this one phase, as a result of the pyrolysis with very fast bamboo, emit much quantity of heat.
4, bamboo charcoal calcination. At this moment the temperature inside charcoal kiln 360 ℃ above. In this one phase, undertake as the abidance of high temperature, remain is in what the material that bamboo charcoal can volatilize mediumly gets to eliminate, but the aeriform condensate of generation -- bamboo vinegar fluid is already very few.
The highest temperature when Zhu Tanduan is burned, want to decide according to the utility of bamboo charcoal. Will tell commonly, air is humid used bamboo charcoal, to calcine temperature 600 ℃ above; Of water purify with charcoal, cook to use charcoal with charcoal, bath, to calcine temperature 700 ℃ above; Electromagnetism screen and fight radiation to use charcoal, to calcine temperature 1000 ℃ of 800 ℃ ～ , taller even.
5, cooling phase. the bamboo charcoal that passes to calcine, below circumstance of gastight of bamboo charcoal kiln, from highest to calcine temperature progressively refrigeration is controlled to 50 ℃ , can give charcoal next.
The bamboo charcoal kiln of fire bamboo charcoal, come round to look from eye have 4 kinds of kinds.
The first kind is to be used at present most inside kiln of hot gourd ladle earth. This kind of charcoal kiln can put 5000 ～ 6000 kilograms of bamboo. Can give bamboo charcoal 700 ～ 900 kilograms. Can collect 400 kilograms of bamboo vinegar fluid of the left and right sides additionally. The cycle burning charcoal of every kiln is 22 days about. Height of this kind of kiln is tall, size is large, difference of temperature of the fluctuation inside kiln is big, uniformity of bamboo charcoal quality is poorer. The put into production of kiln of the 2nd acting gourd ladle earth makes this kind of circumstance got marked improvement. Investment of this kind of charcoal kiln is small, every are 6000 yuan about.
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