我国电站锅炉煤粉直接点火技术的发展以及现状

Development and Status Quo of Utility-boiler Pulverized-coal Direct-ignition Technologies in China

对我国现有的各种煤粉直接点火技术的原理、燃烧器结构以及在我国的发展和应用现状进行了阐述,并指出其各自的优缺点。总结了现有煤粉直接点火燃烧器普遍存在的有关安全性方面的几个问题。为了解决现存电力行业的运行安全性与节油两者矛盾,提出了两类解决手段:其一,采用多种调节手段降低煤粉气流着火热;其二,将直接点火技术与传统点火油枪两者配合使用。指出高温空气直接点火技术因其灵活的调节手段,具有较大的技术优势。

The working principles and burner structures of various pulverized-coal direct-ignition technologies currently available in China as well as their development and application status are expounded along with the respective merits and demerits being pinpointed. Several omnipresent problems concerning the safety of the burners in question are summarized. To solve the contradiction between the operation safety and oil savings now troubling the power generation industry of China,two approaches were proposed: the first approach involves the adoption of multiple regulating means to reduce the pulverized-coal flow ignition heating,and the second is to integrate the use of direct-ignition technology with traditional ignition oil guns. It should be noted that high-temperature air direct-ignition technology enjoys a relatively high technical advantage due to its flexible regulating means.