林产化学与工业2016，Vol.36Issue(2)：99-108,10.DOI:10.3969/j.issn.0253-2417.2016.02.015
层式下吸式气化炉中生物质热解的热力学模型
Thermodynamic Equilibrium Model of Biomass Pyrolysis in Stratified Downdraft Gasifier
薛爱军 1潘继红 1田茂诚 1张冠敏 1冷学礼1
作者信息
- 1. 山东大学能源与动力工程学院，山东 济南 250061
- 折叠
摘要
Abstract
On the basis of mass balance, energy balance and chemical reaction equilibrium, the thermodynamic equilibrium model in flaming pyrolysis zone of stratified downdraft gasifier was developed including the consideration of ash as part of the exit products. Then it was solved by Newton method in Matlab. The calculated values were in good agreement with the experimental results and other models′ results reported in literature. The model was used to analyze and calculate the flaming behavior in prolysis zone. The results showed that ER, moisture content and heat loss had obvious effect on the temperature and compositions of the product gas. The air preheated temperature and ash content also had obvious impact on the gas temperature, but no obvious impact on the gas compositions. With increment of ER and decreasing of moisture content, the possibility of slagging increased. As the ER value was lower than 0. 392, the increasing of air preheated temperature had positive effect on gasification. However, for heat loss>14% and ER<0. 32, the biomass cannot be pyrolyzed completely. The contents of H2 O and CO2 in the product gas of flaming prolysis zone, which had important effect on the reaction of reduction zone, were 20%-25% and 10%-15% for corn stalk gasification. The model provided the initial parameters for development of reduction zone model.关键词
层式下吸式气化炉/有焰热解区/生物质/热解/热动力学平衡模型Key words
stratified downdraft gasifier/flaming pyrolysis zone/biomass/pyrolysis/thermodynamic equilibrium model分类
化学化工引用本文复制引用
薛爱军,潘继红,田茂诚,张冠敏,冷学礼..层式下吸式气化炉中生物质热解的热力学模型[J].林产化学与工业,2016,36(2):99-108,10.
