竹材列管移动床连续干馏炭化的工业试验  

AN INDUSTRIAL TEST ON CONTINUOUS CARBONIZATION OF BAMBOO IN MULTITUBULAR MOVING BED

作　　者：胡福昌[1] 陈顺伟[1] 康志雄[1] 杨思新 庄小伟[1] 

机构地区：[1]浙江省林业科学研究院,浙江杭州310023 [2]衢州市衢江区林业局,浙江衢州324000

出　　处：《林产化学与工业》2005年第2期47-51,共5页Chemistry and Industry of Forest Products

基　　金：国家林业局"948"项目(2001-60);浙江省科技计划项目(01110915)

摘　　要：研制出一种适用于竹材连续干馏炭化的炉型,并进行了竹炭年生产能力200 t规模的工业性试验.竹杆加工成长35 cm、宽4～7 cm的竹片,竹材加工废料破碎成小于10 cm的碎块,从加料口投入,靠重力的作用逐步下移,依次进行干燥、炭化和煅烧,自然冷却后,定时从出炭口取出;干馏气沿炉管上升,加热物料的同时自身被提馏,然后冷凝成为竹醋液.结果表明:竹炭得率为绝干竹材的24.7%,固定碳含量(无灰基)94%以上,碘吸附值平均700mg/g,电阻值一般在10Ω以下;竹醋液得率为绝干竹材的20.9%,pH值在2.4～2.8,总酸平均含量5.07%,溶解焦油平均含量1.17%;燃料用竹木加工废材的消耗量为平均每吨竹炭耗燃料0.287t.A type of stove which is suitable for continuous carbonization of bamboo was developed, and an industrial test at scale of 200 t annual production of bamboo char was carried out. The bamboo stalks were processed into bamboo slices of length 35 cm width 4-7 cm. The processed bamboo residue was broken into smaller pieces less than 10 cm . Raw materials were fed into the feed opening, to shift downward progressively by gravity,then subjected to drying , charring and calcination sequentially. After natural cooling, the char was discharged regularly. Gas rose along boiler tube, accompanied with distillation and heat transfer, then condensated into bamboo pyroligneous liquid. The result showed: yield of bamboo char was 24.7% of the dry bamboo timber; fixed carbon content above 94%, average absorbing value of iodine 700 mg/g, electrical resistance value generally under 10 Ω; yield of bamboo pyroligneous liquid was 20% of the dry bamboo timber, pH value at 2.4-2.8, the average content of total acid 5.07% , average soluble tar content 1.17%; average consumption of bamboo residue is 0.287 t per ton of bamboo char.

关 键 词：炭化 炭化炉 干馏 竹炭 竹醋液 

分 类 号：TQ351.25[化学工程] S795[农业科学—林木遗传育种]