| 300 MW单炉膛循环流化床锅炉二次风射程的数值模拟 |
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| 引用本文： | 郑成航,程乐鸣,周星龙,徐齐胜,王勤辉,方梦祥,骆仲泱.300 MW单炉膛循环流化床锅炉二次风射程的数值模拟[J].动力工程,2009,29(9). |
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| 作者姓名： | 郑成航 程乐鸣 周星龙 徐齐胜 王勤辉 方梦祥 骆仲泱 |
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| 作者单位： | 1. 浙江大学热能工程研究所,能源清洁利用国家重点实验室,杭州,310027
2. 广东电网公司电力科学研究院,广州,510600 |
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| 基金项目： | 国家科技支撑计划资助项目(2006BAA03B02-08) |
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| 摘 要： | 针对大型循环流化床中二次风射流的特性,采用Fluent数值计算软件对300 MW单炉膛大型循环流化床锅炉炉膛进行了数值模拟,研究了二次风口高度、二次风射流角度、二次风风速、一次风风速和炉内颗粒浓度对二次风穿透性和气固两相混合的影响.结果表明:二次风射流深度随着一次风风速的增大和颗粒浓度的提高而减小;当二次风射流速度增大时,射流深度增加;二次风射流角度和二次风喷口位置也会影响二次风射流深度.
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| 关 键 词： | 循环流化床 二次风 射流深度 数值模拟 |
Numerical Simulation of Secondary Air Penetration Depth in a 300 MW Single-furnace Circulating Fluidized Bed Boiler |
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| ZHENG Cheng-hang
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CHENG Le-ming
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ZHOU Xing-long
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XU Qi-sheng
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WANG Qin-hui
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FANG Meng-xiang
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LUO Zhong-yang.Numerical Simulation of Secondary Air Penetration Depth in a 300 MW Single-furnace Circulating Fluidized Bed Boiler[J].Power Engineering,2009,29(9). |
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| Authors: | ZHENG Cheng-hang CHENG Le-ming ZHOU Xing-long XU Qi-sheng WANG Qin-hui FANG Meng-xiang LUO Zhong-yang |
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| Affiliation: | 1.State Key Lab of Clean Energy Utilization;Institute for Thermal Power Engineering;Zhejiang University;Hangzhou 310027;China;2.Guangdong Power Test and Research Institute;Guangzhou 510600;China |
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| Abstract: | Aiming at the characteristics of the secondary air jet in large-scale circulating fluidized beds,numerical simulation was carried out for the furnace of a 300 MW large-scale circulating fluidized bed boiler with single furnace by use of software Fluent.The influence of following factors on secondary air penetration and gas-solid two phase mixture were studied,such as secondary air port elevation,secondary air jet angle,secondary air velocity,primary air velocity and particle concentration in the furnace.Res... |
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| Keywords: | circulating fluidized bed boiler secondary air penetration depth numerical simulation |
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