本科毕业设计外文文献及译文定稿.doc

本科毕业论文外文文献及译文文献、资料题目: Influence ofC oal-feed R ates onB ituminous C oal I gnition inAF ull-scale T iny-oil I gnition B urner 文献、资料来源: 期刊文献、资料发表(出版)日期: 院(部): 热能工程学院专业: 热能与动力工程班级: 热动 073 姓名: 仲明凯学号: 2007031271 指导教师: 杨冬翻译日期: 山东建筑大学毕业设计外文文献及译文-1- 外文文献 Influence ofC oal-feed R ates onB ituminous C oal I gnition inAF ull-scale T iny-oil I gnition B urner ABST RACT A tiny-oil ignition burner has been proposed to reduce oil consumption during the firing-up process and partial-load operations. To investigate the influence of different feed rates on bituminous coal ignition in the tiny-oil ignition burner, full-scale reacting-flow experiments were performed on an experimental ignition burner was identical to that normally used in an 800-MWe utility boiler. Gas temperature distributions in the burner were obtained at coal-feed rates of2,3,4, and 5 tonnes/h. Char burnout and release ofC and H were observed at the exit of the burner nozzle. positions such asO2 and CO were measured in the center of the burner. A change in resistance was obtained within the burner. A saving of90% over previous oil consumption was gained in the firing-up process by using the new oil-gun technology. Key words : Tiny-oil ignition burner ; Coal-burning utility boiler ; Coal-feed rates 1. Introduction To fire-up a boiler, oil is primarily used to pre-heat bustion chamber ofa furnace bringing it to its operating , oil is delivered under high pressure by an oil-gun with a delivery capacity of about 1 tonne/h. Therefore, in the initial firingup process ofa bituminous coal-fired 300 MWe utility boiler, about 100 tonnes of fuel oil would be consumed. Concerns over increasing economic costs in pulverized coal-fired power stations arising from oil consumed in the firing-up process and partial-load operations has spurred interest in developing oil-free and tiny-oil i gnition burners. Various investigators have reported studies of oil-free ignition burners. Masay