期刊论文

Thermodynamic Analysis of the Efficient Flue Gas Waste Heat Utilization System With Raw Coal Pre-dried of Power Plant

中文

中国电机工程学报

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

0258-8013

2017

37

12

3498-3505

10.13334/j.0258-8013.pcsee.160812

国家重点基础研究发展计划项目(973项目)(2015CB251504)； 国家自然科学基金项目(51476053)； 中央高校基本科研业务费专项基金(2015ZZD10)~~；

本校为其他机构

在燃用较高水分煤种的系统中,将原煤预干燥系统和烟气高效余热利用系统结合,能够在提高进入锅炉热量的同时充分实现能的梯级利用,缓解换热设备的低温腐蚀,进一步提高机组的经济性和安全性。为研究高效烟气余热利用系统与原煤预干燥系统结合对系统效率的影响,文章建立了干燥机、制粉系统的热平衡模型,在此基础上以国内某典型百万千瓦超超临界燃煤机组为案例,对带原煤预干燥的高效烟气余热利用系统进行了热力学计算,详细分析了系统的能量分布及经济性能,并对原煤的干燥程度对烟气酸露点和空气预热器选型的影响进行了讨论。结果表明:该系统在锅炉最大连续蒸发量(boiler maximum continuous rating,...

In the system burning high moisture coal, the integration of raw coal pre-drying system and efficient flue gas waste heat utilization system can increase the heat entering into the boiler, at the same time, energy cascade utilization can be fully achieved. The decrease of coal moisture can reduce low temperature corrosion of heat exchange equipment. The economy and safety of the unit can be further improved. In order to study the effect of the combination of efficient flue gas waste heat utilization system and coal pre-drying system on the system efficiency, the heat balance models of dryer an...