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该工艺采用具有固定床的坚式旋风炭化炉,利用稻壳自身热解产物燃烧放热直接加热稻壳使其炭化,不需外加燃料;热解产物完全燃烧后火焰温度可达1400℃以上,可用于锅炉生产蒸气或直接引入工业窑炉取代燃煤;炭化炉内呈还原性气氛,产品固定碳含量高,炉内无机械搅动,产品颗粒整齐;出炉产品采用连续风冷,产品不含水分;连续机械化生产、生产率高,劳动强度低;采用二次助燃风和除尘器将烟气中的可燃成分与微小碳粒烧掉、烟囱出口烟气颜色为林格曼一级(无色透明),尘浓小于200mg/m3达到环保要求。
In the process, a solid cyclone charring furnace with a fixed bed is used, and the rice hulls are directly carbonized by utilizing the combustion exothermic heat of the pyrolysis products of the rice husk without additional fuel; the temperature of the flame after the complete pyrolysis of the pyrolysis products is up to 1400 DEG C, Can be used to produce steam boiler or directly into the industrial furnace to replace coal; carbonization furnace was a reducing atmosphere, the product of fixed carbon content, the furnace without mechanical agitation, the product particles neat; baked products using continuous air cooling, the product does not contain water ; Continuous mechanized production, high productivity, low labor intensity; the use of secondary combustion air and dust collector combustible components in the flue gas and tiny carbon particles burned out, the chimney exit flue gas color is Ringelman level (colorless and transparent) , Dust concentration less than 200mg / m3 to meet environmental requirements.