摘要
转杯式燃烧器是管道加热炉上应用最多的燃烧设备,它具有许多优点,但由于配风不合理,使其燃烧性能不尽人意。根据转杯式燃烧器本身特点,在配风设计上,有三个主要问题应予以重视和解决。一是对入口空气进行分配和整流,使整流后进入炉膛的空气均匀分布,燃烧火焰形状规则并燃烧稳定;二是提高喉口风速,喉口风速提高以后,可使燃烧后期尾部的扩散和混合加强,提高油的燃烧程度;三是燃烧器砖的张角要合适。遵照以上原则,通过加热炉的配风设计,对燃烧器的结构进行了改进,使二次风速达到3Om/s,加强了二次风与油雾的良好掺混,为强化燃烧创造了条件;燃烧器砖的张角选定为52°,不但对气流的发展起到良好的约束作用,而且不结焦;增加二次风入口的过渡锥体,使二次风的流入过程平稳并均匀发展;增加一个收缩锥和整流罩,使进入二次风箱的气流经短距离收缩后进入整流罩,防止了气流的局部死区及涡流,对入口空气进行了分配和整流。
Burner of rotary cup type is a burning instrument in most popular use in the heaters for pipleine. In spite of its numerious advantages, this type of burner has a poor performance due to its improper air feeding system. Considering its characteristics, the following three solutions are given to air feeding problems : (1)to distribute and commutate the incoming air so as to achieve uniform air feeding, regular flames and stable burning; (2)to speed up the air feeding at throat in order to improve the burning efficiency; (3)to choose a proper subtended angle for the burner. Based on the foregoing principles, modifications are made for the air feeding system of the Heater 105, and better performances achieved.
出处
《油气储运》
CAS
北大核心
1996年第1期23-25,共3页
Oil & Gas Storage and Transportation
关键词
加热炉
转杯式
燃烧器
整流
输油管道
配风
heater , burner , commutation, air feeding , performance , air
