废锅式气化炉激冷气工艺优化及性能评估  

Process Optimization and Performance Evaluation of Quench Gas in Waste Heat Boiler of Gasifier

作　　者：樊强[1] 刘刚[1] 陶继业[1] 陈智[1] 王鹏杰[1] 李小宇[1] 任永强[1] Fan Qiang;Liu Gang;Tao Jiye;Chen Zhi;Wang Pengjie;Li Xiaoyu;Ren Yongqiang(State Key Laboratory of Coal Based Clean Energy,Huaneng Clean Energy Research Institute,Beijing 102209,China)

机构地区：[1]中国华能集团清洁能源技术研究院有限公司,煤基清洁能源国家重点实验室,北京102209

出　　处：《煤化工》2020年第5期50-53,79,共5页Coal Chemical Industry

基　　金：国家重点研发计划资助(2017YFB0601902)。

摘　　要：分析了煤气化气流床技术中废锅磨损的机理,探究了影响磨损的主要因素,得出了降低激冷气流速是缓解磨损的有效方法。以某废锅式气化炉激冷气工艺为例,提出了低温激冷气工艺、减温水工艺、低温激冷气耦合减温水工艺3种降低激冷气量、减缓废锅磨损的工艺优化措施,并对其优化后的性能进行了评估。分析结果表明:相比于原工艺,3种优化工艺措施分别可以减缓废锅磨损程度11.6%、45.8%、47.8%,其中减温水工艺和低温激冷气耦合减温水工艺对激冷气流速的降幅和缓解磨损效果较为明显。在实际工业生产中可根据经济性和工况进行选择。The abrasion mechanism of waste heat boiler in entrained flow coal gasification technology was analyzed and the main factors affecting the abrasion were explored.It was concluded that reducing the flow rate of quench gas was an effective method to alleviate the abrasion.Taking the quench gas process of an entrained flow coal gasifier with waste heat boiler as an example,three process optimization measures to reduce the quench gas flow and alleviate the abrasion of the waste boiler were proposed,including the low-temperature quench gas process,the desuperheating water process and the low-temperature quench gas coupling desuperheating water process.And the process performance after the optimization was evaluated.The analysis results showed that:compared with the original process,the three optimization process measures could reduce the abrasion degree of waste heat boiler by 11.6%,45.8% and 47.8% respectively.The desuperheating water process and the low-temperature quench gas coupling desuperheating water process had obvious effects on reducing the quench gas flow and alleviating the abrasion.In the practical industrial production,specific process could be selected according to the economical operation and working conditions of the gasifier.

关 键 词：气流床气化 废锅 激冷气 减温水 耦合 性能评估 磨损程度 

分 类 号：TQ545[化学工程—煤化学工程]