引射式烟囱的研究及在蒸汽过热系统中的应用  

Research on Ejection Chimney and Its Application in Steam Superheating System

作　　者：徐迎超[1] 樊泳[1] 周玉磊[1] 孙东升 

机构地区：[1]北京首钢国际工程技术有限公司,北京100043 [2]河北省首钢迁安钢铁有限责任公司,河北迁安064404

出　　处：《冶金动力》2012年第5期37-39,42,共4页Metallurgical Power

摘　　要：由于蒸汽过热系统不设引风机,所以只有依靠烟囱的高度来提高烟囱的抽力,从而将蒸汽过热器设备燃烧室压力控制在-10 Pa。自然通风烟囱高度45 m时,才能满足燃烧室压力-10 Pa的要求,而45 m高的烟囱固定和支撑存在很大问题。所以采用引射式烟囱,既可以满足燃烧室负压,也可以将烟囱高度设计为22 m,同时降低了投资成本。As there is not induced draft fan in the steam superheating system,so improvement of the chimney pumping force only relies on the chimney height.The combustion chamber pressure of the steam superheater is controlled in-10 Pa.Natural ventilation chimney height of 45 m can meet the requirements of the chamber pressure of-10 Pa.It is difficult to fix and support a chimney with height of 45 m.Use of the ejection chimney can meet the requirements of combustion chamber negative pressure,and the chimney height can be designed to be 22 m.The investment cost is reduced.

关 键 词：引射式烟囱 蒸汽过热系统 烟囱 蒸汽过热器 

分 类 号：TK2[动力工程及工程热物理—动力机械及工程]