摘要
基于Aspen Plus平台,对气体热载体工艺中不能利用的小颗粒油页岩与半焦混合气化发电过程进行模拟;并对模拟结果进行能量平衡和平衡计算,考察了空气当量比、汽固比和气化剂对气化性能和系统效率的影响。结果表明,使用空气作为气化剂时,设置空气当量比为0.302,汽固比为0.006 7,可以达到最佳的气化效果,所生成的合成气低位热值为6.12 MJ/Nm^3,冷气化效率为66.13%,此时系统的一次能源利用效率达到39.02%,效率也达到42.64%;另外,当使用氧气作为气化剂时,虽然冷气化效率有所提高,但系统总率会有一定程度降低。
In this paper, an oil shale-semi-coke co-gasification power generation system was constructed. The system was simulated with Aspen Plus, energy balance and exergy balance were calculated with the simulation da- ta, and a sensitivity analysis with equivalence ratio, vapor-solid （ the mixture of oil shale and semi-coke） ratio and gasifying agent types was performed. The following conclusions are derived from the analysis results： when the air is used as a gasifying agent, the equivalence ratio is 0. 302 and the vapor-solid ratio reaches 0. 006 7, the best effect of gasification can be achieved; the LHV of Syngas is 6. 12 MJ/Nm3 and the cold gasification efficiency is 66. 13% At the same time, the energy efficiency and the exergy efficiency of the system can reach 39. 02% and 42.64% respectively. Besides, when gasifying agent is pure oxygen, although the cold gasification efficiency can be in- creased, but the total exergy efficiency of the system will be reduced.
作者
柏静儒
王林涛
张庆燕
白章
王擎
BAI Jing-ru WANG Lin-tao ZHANG Qing-yan BAI Zhang WANG Qing(Engineering Research Centre of Ministry of Education for Comprehensive Utilization of Oil Shale, Northeast Dianli UniversityI , Jilin 132012, P. R. China Institute of Engineering Thermophysics, Chinese Academy of Sciences2 , Beijing 100190, P. R. China)
出处
《科学技术与工程》
北大核心
2016年第36期25-29,共5页
Science Technology and Engineering
基金
吉林市科技计划(201434001)
吉林省重点科技公关(20140204004SF)资助
关键词
油页岩
半焦
气化
系统模拟
分析
oil shale semi-coke gasification process simulation exergy analysis
