1、 本科毕业 论文 外文文献及 译文 文献、资料题目： Influence of Coal-feed Rates on Bituminous Coal Ignition in A Full-scaleTiny-oil Ignition Burner 文献、资料来源： 期 刊 文献、资料发表（出版）日期： 2009.8.5 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： 2011.3.31 山东建筑大学毕业设计外文文献及译文 - 1 - 外文文献 Influence of Coal-f
2、eed Rates on Bituminous Coal Ignition in A Full-scale Tiny-oil Ignition Burner A B S T 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 ignitio
3、n in the tiny-oil ignition burner, full-scale reacting-flow experiments were performed on an experimental setup.The 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 of 2, 3, 4, and 5 tonnes/
4、h. Char burnout and release of C and H were observed at the exit of the burner nozzle. Gas compositions such as O2 and CO were measured in the center of the burner. A change in resistance was obtained within the burner. A saving of 90% over previous oil consumption was gained in the firing-up proces
5、s 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 the combustion chamber of a furnace bringing it to its operating temperature.Generally, oil is delivered un
6、der high pressure by an oil-gun with a delivery capacity of about 1 tonne/h. Therefore, in the initial firingup process of a 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 a
7、rising from oil consumed in the firing-up process and partial-load operations has spurred interest in developing oil-free and tiny-oil ignition burners. Various investigators have reported studies of oil-free ignition burners. Masaya et al. studied the stabilization of pulverized coal combustion usi
8、ng a plasma-assisted burner, while Kanilo et al. investigated the ignition and combustion of pulverized coal using a microwave-assisted burner. In China, Zhang et al. described their application of plasma ignition technology in bituminous coal-fired boilers. However, for such burners, two main problems arise: difficulties in extending the capacity of the burner and the frequent maintenance
