摘要
为了更有效利用低温余热以降低水泥窑能耗,对5000t/d级新型干法水泥窑低温余热发电的利用方式进行探讨。以生产过程中从窑头冷却机和窑尾预热器抽出的废气为热源,建立单压、双压、闪蒸循环系统模型,采用遗传算法优化出各循环的热力特性参数,改进双压系统结构,并对单压、双压与闪蒸系统各自的优缺点进行比较,分析结果表明:改进双压循环系统输出功率最高,但闪蒸循环系统,结构简单、运行方式灵活,两者都有广泛应用价值。
To more effectively utilize low temperature waste heat and reduce the energy consumption of a cement kiln,an exploratory study was conducted of the low-temperature waste heat utilization modes for power generation in a 5 000 t/d class new type dry-method cement kiln.With the exhaust gas extracted from a cooler in the front portion of the kiln and a preheater in its tail portion serving as a heat source,the models of single-pressure,dual-pressure and flash circulation system were established.By using genetic algorithms,optimized were the thermodynamic characteristic parameters for various cycles.The dual-pressure system configuration was improved with the respective merits and demerits of the single-pressure,dual-pressure and flash system being compared.The analytic results show that the improved dual-pressure circulation system has a maximum power output and the flash system,however,is simple in structure and flexible in operating modes.Both systems feature relatively wide applications.
出处
《热能动力工程》
CAS
CSCD
北大核心
2009年第4期503-506,共4页
Journal of Engineering for Thermal Energy and Power
基金
国家863基金资助项目(2007AA05Z251)
关键词
水泥窑
中低温余热利用
遗传算法
双压循环
闪蒸循环
cement kiln,medium and low temperature waste heat utilization,genetic algorithm,dual-pressure cycle,flash cycle
