摘要
利用Aspen Plus软件建立干桦木屑在下吸式固定床气化炉中的气化模型,模拟值与文献实验值吻合良好。利用Aspen Plus的灵敏度分析模块模拟分别以水蒸气(H_(2)O)和二氧化碳(CO_(2))为气化剂时气化剂/生物质碳比(GC值)对气化结果的影响,并结合H_(2)O、CO_(2)各自的特点研究其复合气化。结果表明,H_(2)O气化时可获得富氢煤气,但其净CO_(2)排放量较高;CO_(2)气化时碳转化率及冷煤气效率较低,但净CO_(2)排放量较低;H_(2)O、CO_(2)复合气化使碳转化率及冷煤气效率略有降低,但可有效减少气化系统中的净CO_(2)排放量。
The gasification model of dry birch sawdust in downdraft fixed bed gasifier is established by Aspen Plus software,and the simulation results are in good agreement with the literature values.The sensitivity analysis module of Aspen Plus is used to simulate the effect of gasifier/biomass carbon ratio(GC value)on gasification results when steam(H_(2)O) and carbon dioxide(CO_(2)) are used as the gasification agent,and the co-gasification of H_(2)O and CO_(2) is studied in combination with their characteristics.The results show that hydrogen rich gas can be obtained during H_(2)O gasification,but the net CO_(2) emission is higher.Carbon conversion and cold gas efficiency are lower during CO_(2) gasification,but net CO_(2) emission is lower.The co-gasification of H_(2)O and CO_(2) reduces the carbon conversion and cold gas efficiency slightly,but it effectively reduces the net CO_(2) emission in the gasification system.
作者
郑志行
张家元
李谦
周浩宇
Zheng Zhihang;Zhang Jiayuan;Li Qian;Zhou Haoyu(College of Energy Science and Engineering,Central South University,Changsha 410083,China;National Engineering Research Center of Sintering and Pelletizing Equipment System,Zhongye Changtian International Engineering Co.,Ltd.,Changsha 410205,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2022年第5期377-382,共6页
Acta Energiae Solaris Sinica
基金
湖南省自然科学基金(2020JJ5994)。
