本文主要研究内容
作者原辉（2019）在《1000MW机组电除尘器内部流场优化及除尘效率数值模拟研究》一文中研究指出：随着我国煤炭消耗量的逐年增加和日益严格的环保法规,不可避免会对燃煤锅炉尾气排放标准提出更高的要求。电除尘器因其具有除尘效率高,压力损失小,运行维护成本低等优点成为应用最广泛的除尘设备,当前,针对电除尘器的数值模拟研究取得了一定进展,但研究模型多以实验电除尘器尺寸展开,与实际电除尘器真实参数与运行条件存在差异。为正确反映电除尘器内微细粉尘脱除的真实情况,本文首先对某电厂1000MW级机组电除尘器各工况下进出口粉尘浓度进行试验研究,然后利用Fluent在无电场和颗粒相的条件下,研究了多孔板布置方式、多孔板开孔率及有无灰斗挡板对电除尘器内流场均匀性的影响,定量得出:采用三层多孔板布置方案且开孔率优先选择0.5/0.3/0.3的布置方式,可以使流场均匀性达到最优。最后在流场优化基础上,将电场、流场及颗粒相运动进行多场耦合模拟,展开横向极板式电除尘器气场特性和颗粒收集效率的研究。分别研究了电除尘器出口压力、入口流速、操作电压、粉尘浓度、粉尘粒径、极配参数及不同电晕电极结构对除尘效率的影响,定量得出:(1)降低出口压力绝对值,降低入口烟气流速,增大操作电压,稳定粉尘浓度在30g/m~3及提高粉尘凝并率可以优化电除尘器除尘效率;(2)适当减小异极距、同极距及电晕线直径,可以得到较优的除尘效率,具体的参数选型应结合工程实际;(3)BS极线因其尖端突起明显有着优于其他电极结构的除尘性能,但对粗粉尘粒径适应性较差。本文研究结果,可望为1000MW级机组电除尘器的设计、选型、结构优化提供有益的理论指导。
Abstract
sui zhao wo guo mei tan xiao hao liang de zhu nian zeng jia he ri yi yan ge de huan bao fa gui ,bu ke bi mian hui dui ran mei guo lu wei qi pai fang biao zhun di chu geng gao de yao qiu 。dian chu chen qi yin ji ju you chu chen xiao lv gao ,ya li sun shi xiao ,yun hang wei hu cheng ben di deng you dian cheng wei ying yong zui an fan de chu chen she bei ,dang qian ,zhen dui dian chu chen qi de shu zhi mo ni yan jiu qu de le yi ding jin zhan ,dan yan jiu mo xing duo yi shi yan dian chu chen qi che cun zhan kai ,yu shi ji dian chu chen qi zhen shi can shu yu yun hang tiao jian cun zai cha yi 。wei zheng que fan ying dian chu chen qi nei wei xi fen chen tuo chu de zhen shi qing kuang ,ben wen shou xian dui mou dian an 1000MWji ji zu dian chu chen qi ge gong kuang xia jin chu kou fen chen nong du jin hang shi yan yan jiu ,ran hou li yong Fluentzai mo dian chang he ke li xiang de tiao jian xia ,yan jiu le duo kong ban bu zhi fang shi 、duo kong ban kai kong lv ji you mo hui dou dang ban dui dian chu chen qi nei liu chang jun yun xing de ying xiang ,ding liang de chu :cai yong san ceng duo kong ban bu zhi fang an ju kai kong lv you xian shua ze 0.5/0.3/0.3de bu zhi fang shi ,ke yi shi liu chang jun yun xing da dao zui you 。zui hou zai liu chang you hua ji chu shang ,jiang dian chang 、liu chang ji ke li xiang yun dong jin hang duo chang ou ge mo ni ,zhan kai heng xiang ji ban shi dian chu chen qi qi chang te xing he ke li shou ji xiao lv de yan jiu 。fen bie yan jiu le dian chu chen qi chu kou ya li 、ru kou liu su 、cao zuo dian ya 、fen chen nong du 、fen chen li jing 、ji pei can shu ji bu tong dian yun dian ji jie gou dui chu chen xiao lv de ying xiang ,ding liang de chu :(1)jiang di chu kou ya li jue dui zhi ,jiang di ru kou yan qi liu su ,zeng da cao zuo dian ya ,wen ding fen chen nong du zai 30g/m~3ji di gao fen chen ning bing lv ke yi you hua dian chu chen qi chu chen xiao lv ;(2)kuo dang jian xiao yi ji ju 、tong ji ju ji dian yun xian zhi jing ,ke yi de dao jiao you de chu chen xiao lv ,ju ti de can shu shua xing ying jie ge gong cheng shi ji ;(3)BSji xian yin ji jian duan tu qi ming xian you zhao you yu ji ta dian ji jie gou de chu chen xing neng ,dan dui cu fen chen li jing kuo ying xing jiao cha 。ben wen yan jiu jie guo ,ke wang wei 1000MWji ji zu dian chu chen qi de she ji 、shua xing 、jie gou you hua di gong you yi de li lun zhi dao 。
论文参考文献
论文详细介绍
论文作者分别是来自华北电力大学的原辉，发表于刊物华北电力大学2019-10-28论文，是一篇关于机组电除尘器论文,多场耦合论文,流场均匀性论文,除尘效率论文,华北电力大学2019-10-28论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自华北电力大学2019-10-28论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：机组电除尘器论文; 多场耦合论文; 流场均匀性论文; 除尘效率论文; 华北电力大学2019-10-28论文;