摘要
以硫酸渣化工废料为对象,综合考察并优化了影响其物理结构和化学链燃烧反应性能的3个关键煅烧工艺参数,并评估了最佳硫酸渣的循环反应性能。颗粒形貌表征、实验研究和正交试验优化的相互验证表明:煅烧温度对硫酸渣物理结构和化学反应性能影响最大,颗粒颜色和表观形貌变化最明显,在1150℃煅烧的硫酸渣颗粒熔融或烧结现象严重;当加热速率为15℃/min、煅烧温度为1050℃和持续时间为60 min时煅烧的PY-8硫酸渣表现最佳;对其"还原-氧化"循环反应性能的研究表明,PY-8循环过程表现稳定,颗粒始终保持多孔结构,无明显烧结,在满足廉价、高效的基础上具备规模化制备的潜力。
Pyrite cinder,a chemical waste,was selected as the research object in this study,and three key calcining process parameters that showed impact on the physical structure and CLC reaction performance of pyrite cinder were investigated and optimized.The cyclic reaction performance of the best pyrite cinder was studied.The mutual validation results of particle morphological characterization,experimental study and orthogonal experiment optimization design indicated that the calcination temperature had the greatest impact on the physical structure and chemical reaction performance of pyrite cinder,the biggest changes of particle color and apparent morphology were observed,and severe melting or sintering phenomenon occurred for the pyrite cinder calcined at the temperature of 1050℃.The best pyrite cinder PY-8 were obtained at the heating rate of 15℃/min,the calcination temperature of 1150℃and the duration time of 60 min.The redox cyclic reaction performance of PY-8 showed that it behaved stable during the cyclic process,the particles could maintain the porous structure without evident sintering,which showed the potential of scale production on the basis of satisfying the features of low cost and high efficiency.
作者
王学
毛志忠
李延兵
张帅
WANG Xue;MAO Zhi-zhong;LI Yan-bing;ZHANG Shuai(Hebei Guohua Cangdong Power Generation Co.Ltd.,Cangzhou,China,061113;Shenhua Guohua(Beijing)Electric Power Research Institute Co.Ltd.,Beijing,China,100024;Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,Southeast University,Nanjing,China,210096)
出处
《热能动力工程》
CAS
CSCD
北大核心
2020年第11期94-99,共6页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金(51706041)
中国电机工程学会“青年人才托举工程”(CSEE-YESS-2017007)。
关键词
化学链燃烧
硫酸渣
煅烧工艺参数优化
循环反应性能
chemical looping combustion
pyrite cinder
optimization of calcining process parameters
cyclic reaction performance
