稻壳连续热解特性研究  

STUDY ON CONTINIOUS PYROLYSIS OF RICH HUSK

作　　者：王明峰[1] 蒋恩臣[1] 李伯松[1] 张强[1] 许细微[1] 刘敏[1] 周岭[2] 

机构地区：[1]华南农业大学工程学院,广州510640 [2]塔里木大学农业工程学院,阿拉尔843300

出　　处：《太阳能学报》2012年第1期168-172,共5页Acta Energiae Solaris Sinica

基　　金：广东省高等学校自然科学研究重点项目(06Z004);广东省科技计划项目(2009B050600008)

摘　　要：在自行研制的生物质连续热解反应装置上进行稻壳连续热解和二次裂解实验研究。随着稻壳热解温度的提高,炭产率降低,气体产率增加,液体产率先增加后减少;随着滞留时间的减少,炭产率、液体产率增加,气体产率减少。稻壳热解气以CO2和CO为主,且二者为竞争关系,热解温度提高,CO2产量降低,CH4、H2、C2H4、C2H6产量增加,CO的产率变化不大;滞留时间对热解气组分影响不大。二次裂解温度提高,裂解气中的H2、CH4、C2H4含量明显增加,二次裂解温度为800℃时,H2产率达到12%。稻壳500℃热解挥发物600℃二次裂解木醋液中醋酸含量高达49.44%,焦油中检测到的物质主要为丙酮和异丙醇。The continuous pyrolysis and secondary cracking performance of rice husk was investigated in a biomass continuous pyrolysis reactor. The effects of pyrolysis temperature, residence time and secondary cracking tempera- ture on pyrolysis products were studied. When rice husk pyrolysis gas composes CO2 and CO mainly, the yield of CO2 reduced and yield of CH4, H2, C2H4, C2H6 inereasesd, yield of CO is not much change with pyrolysis temper- ature increasing. Residence time has little effect on the composition of pyrolysis gas. The yield of H2 , CH4, C2H4 increases significantly with increasing the temperature of secondary cracking. When secondary cracking temperature is 800℃, production rate of H2 was 12%. Rice husk pyrolysing at 500℃ ,then cracking at 600℃, acetic acid is as high as 49.44% in the wood vinegar, and acetone and isopropanol are the two more compositions detected in the tar.

关 键 词：生物质 稻壳 连续热解 二次裂解 热解气 

分 类 号：TK6[动力工程及工程热物理—生物能]