部分气化煤制气多点喷射再燃脱硝的冷态流场研究  

Influence of multi-point injection on coverage fraction of coal gas during its reburning process

作　　者：王伟平[1] 张忠孝[1] 滕叶[1] 陈永权[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《洁净煤技术》2013年第1期97-100,117,共5页Clean Coal Technology

摘　　要：以某130 t/h锅炉为原型搭建冷态实验台,研究部分气化煤制气再燃技术中多点喷射再燃气流对炉内上升气流的覆盖率,并采用标准湍流模型对其进行了数值模拟。结果表明:实验中八点喷射再燃气流对上升气流的覆盖率高,且4种工况中四角侧气流以41.17°射入,四墙中心处再燃气流以84.57°射入时,再燃气流对上二次风的覆盖效果最好。Taking one 130 t/h boiler as prototypes,established cold state experimental bench.To better reburn the coal gas,test the influence of multi-point injection on coverage fraction of upflow in gasifier.Numerically simulate this process with standard turbulence model.The results show that,while the injection points are eight,the coverage fraction is the highest.Under four conditions,when the flow inclination of four corners all is 41.17°and reburning flows from the centrals of four walls is 84.57°,the overfire air can be greatly covered.

关 键 词：锅炉 多点喷射 冷态流场 覆盖效果 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]