| 煤粉气流在高温空气中着火距离的数值试验研究 |
| |
| 引用本文： | 聂欣,吕明,周志军,周俊虎,岑可法. 煤粉气流在高温空气中着火距离的数值试验研究[J]. 热力发电, 2010, 39(3). DOI: 10.3969/j.issn.1002-3364.2010.03.013 |
| |
| 作者姓名： | 聂欣 吕明 周志军 周俊虎 岑可法 |
| |
| 作者单位： | 1. 杭州电子科技大学机械工程学院,浙江,杭州,310038
2. 浙江大学能源清洁利用国家重点试验室,浙江,杭州,310027 |
| |
| 摘 要： | 对煤粉气流在高温空气直接点火燃烧器内部以及其出口区域的煤粉颗粒的着火燃烧过程进行数值模拟,根据所得结果,对各种因素如煤粉浓度、一次风流量、热风温度、热风流量等对煤粉着火距离的影响进行分析。计算结果表明,随着一次风煤粉浓度的减小或一次风流量的增加,煤粉气流在燃烧器内的温度场下降,着火距离增大;一次风流量变化对煤粉着火的影响大于煤粉浓度对着火的影响;着火距离随着热风温度的升高而近似线性缩短,随着热风流量的增大先缩短后还长。
|
| 关 键 词： | 煤 煤粉浓度 燃烧 高温空气 数值模拟 着火距离 |
TEST STUDY ON IGNITION DISTANCE OF PULVERIZED COAL FLOW IN THE HIGH-TERMPERATURE AIR |
| |
| NIE Xin,L Ming,ZHOU Zhi-jun,ZHOU Jun-hu,CEN Ke-fa. TEST STUDY ON IGNITION DISTANCE OF PULVERIZED COAL FLOW IN THE HIGH-TERMPERATURE AIR[J]. Thermal Power Generation, 2010, 39(3). DOI: 10.3969/j.issn.1002-3364.2010.03.013 |
| |
| Authors: | NIE Xin L Ming ZHOU Zhi-jun ZHOU Jun-hu CEN Ke-fa |
| |
| Affiliation: | NIE Xin,L(U) Ming,ZHOU Zhi-jun,ZHOU Jun-hu,CEN Ke-fa |
| |
| Abstract: | The ignition and combustion process of pulverized coal(PC) particles in the PC flow inside the high-temperature air(HTA) direct ignition combustor as well as in outlet area of said combustor,has been simulated.Based on the results obtained from simulation,the effects of working condition parameters,such as the PC concentration,the flow rate of primary air,the temperature of HTA,and the flow rate of HTA etc,have been analyzed.Results of calculation show that:(1)the ignition distance increases as decreasing t... |
| |
| Keywords: | coal PC concentration combustion HTA numerical simulation ignition distance |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
