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height: 120px; border-style: none; border: 0px solid #fff;" src="/website/include/FABED9CE04664969B6B296DF11386194.html"></iframe> <!-- 文章 start--> <div class="container"> <div class="enterprise-info-box"> <div class="enterprise-info-category-descr"> <img src="/resource/website/article/Content/img/enterprise-info-category-descr.jpg" /> <a href="/index.html">首页</a> >> <a href="/website/article/11/index.html">文献频道</a> >> <a href="/website/article/1110/index.html">矿业论文</a> >> 正文 </div> <div class="enterprise-info-mainbody"> <span id="id" style="display: none;">20FE0BAAEA344CEA80A081DEE945C18C</span> <div class="title">Ud式矿用湿式振弦旋除器的机理分?及实验研I?/div> <div class="sub-title">2019-09-29</div> <!-- D start --> <div class="introduction"> Z传统湿式除尘器在矿山井下应用中存在的除尘效率较低、阻力大{问题,研发了一U适合矿山?下用的Ud式矿用湿式振弦旋除器。介l了该除装|的l构、工作原理和除尘机理Qƈ对该除尘装置的除 效率和dҎ进行了实验研究。除机理分析表明:该除器有机地利用了喷雾降尘理论、振弦栅捕尘理论?旋流除尘理论Q借助水雾、水滴、水膜、旋?4 U除技术,佉K滴与含尘气流接触面积大、接触时间长、捕效?高。试验研I表明:l合考虑除尘效率和阻力因素,该除器q行时的最佳风速ؓ10?2 m/sQ对ȝ的除尘?率大?8%Q对呼吸性粉的除尘效率大于96%Q阻力小?00 PaQ在矿山井下除尘pȝ... </div> <!-- D start --> <!-- 正文 --> <div class="mainbody"> <div style="display:none"> Series No. 519 ? ? ? ? ȝ 519 ? September 2019 METAL MINE 2019 q第 9 ? Ud式矿用湿式振弦旋除器的机理分? 及实验研I? 1 Q?Q? 1Q?Q? 41 金龙? ??王运? 1. 华唯金属矿资源高效循环利用国家工程研究中心有限公司Q安?马鞍?243000Q?. 中钢集团马鞍qqI Q? 有限公司Q安?马鞍?243000Q?. 金属矿山安全与健康国安点实验室Q安?马鞍?243000Q?. 北京U技大学土木? 资源工程学院Q北?100083Q? ??Z传统湿式除尘器在矿山井下应用中存在的除尘效率较低、阻力大{问题,研发了一U适合矿山? 下用的Ud式矿用湿式振弦旋除器。介l了该除装|的l构、工作原理和除尘机理Qƈ对该除尘装置的除 效率和dҎ进行了实验研究。除机理分析表明:该除器有机地利用了喷雾降尘理论、振弦栅捕尘理论? 旋流除尘理论Q借助水雾、水滴、水膜、旋?4 U除技术,佉K滴与含尘气流接触面积大、接触时间长、捕效? 高。试验研I表明:l合考虑除尘效率和阻力因素,该除器q行时的最佳风速ؓ 10?2 m/sQ对ȝ的除尘? 率大?8%Q对呼吸性粉的除尘效率大于 96%Q阻力小?00 PaQ在矿山井下除尘pȝhq泛的应用前景? 关键?矿井除尘 Ud?湿式振u旋流除尘 除尘机理 + 中图分类?X513QX505QTD926.2 4 DOI 10.19614/j.cnki.jsks.201909027 文献标志?A 文章~号 1001-1250Q?019Q?09-167-05 Mechanical Analysis and Experimental Research of Mobile Wet Vibrating String Cyclone Dust Collector for Mine 1Q?Q? 1Q?Q? 42 Jin Longzhe Li Gang Wang Yunmin Q?. Huawei National Engineering Research Center of High Efficient Cyclic Utilization of Metallic Mineral Resources Co.QLtd.Q? Maanshan 243000QChinaQ?. Sinosteel Maanshan Institute of Mining Research Co.QLtd.QMaanshan 243000QChinaQ?. State Key Laboratory of Safety and Health for Metal MineQMaanshan 243000QChinaQ?. School of Civil and Resources EngineeringQUniversity of Science and Technology BeijingQBeijing 100083QChinaQ? Abstract Based on the traditional wet dust collector with the shortcomings of low dust removal efficiency and high resis? tance in the application of dust removal system for underground mineQa mobile wet vibrating string cyclone dust collectorQ? which is well adapted for dust removal system of mineQwas researched. The structuralQworking principle and dust collection mechanism of the dust removal device were introducedQand experimental research on its dust removal efficiency and resis? tance characteristics were carried out. The analysis of dust removal mechanism showed that the dust collector has made use of the theory of spray and dust suppressionQthe theory of vibrating string trapping and the theory of swirling dust removal. Four stage dust removal technology including water mistQwater dropletQwater film and swirling makes the contact area between droplet and dust airflow wideQthe contact time longQand the efficiency of dust collection high. The experimental results showed that considering the factors of dust removal efficiency and resistanceQthe optimal wind speed is 10~12 m/sQwhich re? alized the total dust removal efficiency more than 98%Qthe respirable dust removal efficiency more than 96%Qand the resis? tance less than 700 Pa. The dust removal system has broad application prospects in underground mine. Keywords Mine dust removalQMobile typeQWet vibrating string cyclone dust removalQDust collection mechanism 矿山行业井下是典型的产尘场所Q其生q程 中生的大量_尘严重污染作业环境Q是矿山安全 收稿日期 2019-08-10 基金目 “十三五”国安点研发计划课题(~号Q?017YFC0805204Q;国家安监d2017q安全生产重特大事故防治关键技术科技目Q编P anhui-0006-2017AQQ? 作者简? ?刚(1982—)Q男Q高U工E师Q博士? · 167 · ȝ519? ? ? ? ? 2019q第9? 生的重大隐患? 别设有粉传感器Q在{体内顺序安装高压喷雾装 |、振弦栅ѝ旋装|。高压喷雾装|是׃排高 压供水管、布讑֜高压供水上的高压喷嘴构成,? 压供水管的进水管路上分别布置水܇和电水阀Q? 高压喷嘴的喷N方向与除尘器内气流q行方向 一_振u栅板׃锈钢金属丝排列编l而成Q旋? 装置?个Ş状相同、方向彼此相反的旋流叶片相对 l合构成Q? 个旋叶片之间的{体UC水筒? 高压喷雾装置和振弦栅板串联后构成高压喷雾振u 栅除段Q? 个Ş状相同、方向彼此相反的旋流叶片 和脱水筒l合构成双向旋流除尘脱水Dc在高压? 雾振弦栅除尘D늚{体下面设有喷雾振u浆攉 器,喷雾振u浆攉器的下部设有喷雾振u除尘 排污孔;在脱水筒的下面设有旋尘收集器Q旋? 浆攉器的下部设有旋流除尘排污孔? 井下_尘如果得不到有效的防治Q会随矿井? 风系l的排风风流排入大气Q进一步造成大气? 染。矿井粉具有浓度高、粒径小的特征,微细_尘 在作业岗位环境气的扰动下,不易沉降Q长期悬? Q?-3Q? ? 于空气环境中Q极大危害作业h员的w心健康 随着Z对粉尤其是微细_尘捕集机理研究的不 断深入,各种高效湿式除尘器、袋式除器已应用于 井下_尘的控制。由于湿式除器h除尘效率 高、造h低、结构简单等优点Q在矿山pȝ应用非常 Q? 4-6Q? q泛 。目前矿׃下用的喷雾除尘装置或湿? 除尘器存在对微细_尘除尘效率低、运行阻力大、能 Q? 7-10Q? 耗高{缺?Q因此迫切需要研制出适合于矿׃ 下开采技术条件和环境的新型低成本、能耗适中? 湿式矿用除尘器? Ud式矿用湿式振弦旋除器q设?PLC ? 制系l,其控制柜固定在؜道壁面或室内,PLC ? 制系l通过U\与水c电水阀、粉浓度传感器 q接Q以控制水܇、电水阀的开启与兛_QPLC控制 pȝq根据采集的_尘度数据自动Ҏ泵进行变 频调速,从而调节喷雾水压和水量Q降低粉浓度, 按需净化空气? 本hҎ矿山井下生及񔞮特点,开发了一 U移动式矿用湿式振u旋流除尘器。本文介l了? 除尘机理Q研I了光性能Qؓ该除器的工E实 跉|供了理论依据? 1 除尘器结构及原理 1 . 1 l构设计 针对现有湿式除尘器在矿山井下应用存在的局 1 . 2 工作原理及除机? 限性问题,研究开发了一U具有除效率高、阻? 、能耗低、体U小、布|灵zR处理成本低廉、运? l护Ҏ的新型高效矿用湿式除器Q适用于矿? 井下工作面和巷道_尘特别是呼吸性粉的ȝQ? 其结构示意见?? Ud式矿用湿式振弦旋除器的工作原? 是:在高压喷雾振弦栅除尘D,含尘气流从集进? 口进入,Z减少pȝq行dQ高压喷嘴的喷雾? 向与气流q行方向一_微细水雾与含气中? _发生碰撞,捕获、凝聚粉,随着_尘捕获数量? 增加Q雾_因_径增大、质量增加而沉降下来。ؓq? 一步增加除效果,高压喷嘴产生的水雑֖向振? 栅板Q雾与振u栅板的钢弦撞击,在振弦栅板上? 成水膜,q一步将逃出水雾的粉拦截捕集下来,? 水雾q箋的冲L涤作用下Qɞ惔水浆入{体 下面讄的喷雾振弦尘收集器Q从喷雾振u除尘 排污孔排出。在双旋除段Q气中的粉和? 雑֜风机的抽怸Q? 个Ş状相同、方向相反的旋流 叶片使气保持旋转,在离心力作用下运动到脱水 {的内表面。采用的双旋除脱水Ş式气流? 后经q左旋、右旋或x、左旋流U运动,L_尘 弹回Q从而降低了除尘装置的阻力,大大提高了离? 分离_尘和雾滴的效果Q同时保持了z净气流直线 轨迹形式排出。尘泥水流入脱水筒下面讄的旋 尘收集器Q由旋流除尘排污孔排出? 由图1可看出,Ud式矿用湿式振弦旋除器 主要q体、集进气口、风机等部分l合而成Q由 支撑机构支撑Q在支撑l构下部安装滚轮Q可实现? 器的移动除。集进气口位于{体的进气端Q? 风机安装在筒体的出气端内Q筒体的q、出口部位分 Ud式矿用湿式振弦旋除器的除机理是 喷N理论、振弦栅捕尘理论、旋除理Z · 168 · ? 刚等Q移动式矿用湿式振u旋流除尘器的机理分析及实验研I? 2019q第9? PLC控制pȝ理论有机l合Q应用于同一装置中。其 除尘机理可以看成是水雾、振弦栅和旋叶片捕的 共同作用Q具体涉及到惯性碰撞、拦截、布朗扩散、静 天^Q实验前后o膜质量计除效率;选择h? 表性的采样滤膜Q用昑־镜计数法分别定除尘? 验设备出口和入口_尘的粒径分布,q计呼吸? _尘的百分含量,Ҏ除尘试验讑֤出口和入口的 _尘度、呼吸性粉的癑ֈ含量计算出呼吸性粉 除效率? Q?1-15Q? c凝l、重力沉降、旋离心分ȝ捕尘机理 ? 当含气流l移动式矿用湿式振u旋流除尘? Ӟ首先被喷N碰撞捕捉,然后被振弦栅杉K? 间隙的水膜拦截捕捉,随着捕捉_尘的液滴数量和 质量的增加,在重力沉降作用下形成下降的水,? 由排污孔排出。同Ӟ含尘气流l旋除脱水筒Q? 在旋离心分M用下使粉和水雾从气中分离 出来? 除尘器试验设备阻力采用测定除试验装|? q、出口全压,其全压差即ؓ除尘器试验设备的? 力,采用YYT-200B型倾斜压差计测定全压倹{? 3 实验l果及分? 按照上述Ҏq行除尘试Q经计算Q不同除? 2 实验样品、系l与Ҏ . 1 _尘样品_径分析 风速情况下Ud式矿用湿式振弦旋除器的除? 效率和阻力见?? 2 以采集的某铁矿井下؜道粉ؓ实验样品Q用 Mastersizer2000 型粒度分析A定的粉粒径分? 曲线见图2? p1可看出:①除风速对Ud式矿用湿式振 弦旋除器的除效率和d影响非常明显。② 当除风速处于较低风速区间时Qȝ除效率? 呼吸性粉除效率和d均偏低;随着除尘风? 的增加,d快速提高,ȝ除效率、呼吸性粉 除效率也随之提高Q③当风速达?12 m/s 以上 后,ȝ除效率达?99.8%以上Q且不再随除? 风速提高而上升,而呼吸性粉除效率反而下 降。④ȝ除效率和呼吸性粉除效率最? 所对应的除风速ؓ12 m/s。因此,l合考虑除尘? 率和d因素Q移动式矿用湿式振u旋流除尘器的 除尘风速应设计?0?2 m/sQ这可以保证ȝ除 效率超q?8%、呼吸性粉除效率超q?6%? 由图 2 可看出,实验用粉样品基本小?100 μmQ小?0 μm的粉占90%以上? 2 . 2 实验pȝ及方? 除尘讑֤性能定主要包括除尘效率、阻力测 定。测试系l由4部分l成Q即Ud式矿用湿式振? 3 旋流除尘器(处理风量 8 000? 0000 m /hQ、供水系 l、发和排风pȝ、测试与计算机控制系l,除尘 效果试验pȝ见图3? 4 几种典型湿式除尘器的性能比较 Z更全面地了解Ud式矿用湿式振弦旋除 器在性能斚w的优性,对几U典型湿式除器 q行了性能比较Q结果见?? 从表2可看出:①移动式矿用湿式振u旋流除尘 器具有除效率高Q尤其是呼吸性粉的除尘? 率)、阻力低的特炏V②在传l湿式除器中,文丘 里除器的除效率最高,但与Ud式矿用湿式振 弦旋除器相比Q阻力明显较大,因而能耗高Q其 他传l湿式除器除尘效率均较低,无法满当前 除尘效率定采用在除器试验讑֤q、出? 气流q稳的直道内布|管道测Aq行{动力粉 采P采样讄量?25?0 L/minQ连l采? 10?5 minQ通过U量Q采用精度ؓ十万分之一电子 · 169 · ȝ519? ? ? ? ? 2019q第9? C,2010. 环保标准的要求。因此,Ud式矿用湿式振弦旋? 除尘器的性能明显优越? Jin LongzheQLi JinpingQSun Yufu.Mine Dust Control TheoryQMQ? Beijing:Science PressQ?010. 5 l?? Q?Q? ? 健,张耿城.׃矿山通风d前沿技术及发展态势QJQ?? Q?Q移动式矿用湿式振u旋流除尘器采用横? 业工E,2018Q?Q?62-64. 卧式l构Q适用于矿׃下工作面和؜道的_尘? 理,无须讄除尘道和风机基Q除系l体U大 大减,降低了制造和安装成本? Zhao JianQZhang Gengcheng.Cutting-edge technology and develop? ment trend of ventilation and dust control in deep-level minesQJQ? Mining EngineeringQ?018Q?Q?62-64. Q? 6Q?苏文湫,怡斌.高效滤筒除尘器在矿山除尘pȝ中的应用QJQ? Q?Q移动式矿用湿式振u旋流除尘器采用喷? 有色金属Q矿山部分,2016Q?Q? 42-45. 降尘、振弦栅除尘、旋除相l合的湿式除方 式,实现了水雾、水滴、水膜、旋?U除技术,雾滴 与含气接触面U大、接触时间长、捕效率高? Su WenqiuQZhu Yibin.High-efficient cartridge filter in mine dust removal systemQJQ?Nonferrous MetalsQMining SectionQ?016Q?Q? 4 2-45. Q? 7Q?Wu Chao.A comprehensive survey of chemical dust suppressants in Q?Q移动式矿用湿式振u旋流除尘器采?PLC the world over the last 15 yearsQMQ?Beijing:Chemical Industry PressQ?000:705-719. 控制pȝQPLC控制pȝҎ采集的粉浓度数据自 动对水܇q行变频调速,从而调节系l喷雾水压和 水量Q降低粉浓度,按需净化空气,节能效果? 著。同Ӟ讑֤支撑机构的下部安装滚轮,可以随着 井下工作面的推进而方便地Ud到合适的位置? Q?Q? ? ,Ƨ家才,?勃,{?湿润剂溶液在化矿矿中的反? 湿润行ؓ研究QJQ?安全与环境学报,2005Q?Q?65-68. Wu ChaoQOu JiacaiQZhou BoQet al.Investigation on wetting behav? ior of wetting agents to dust of sulfide ores by up- ward capillary seepage methodQJQ?Journal of Safety and EnvironmentQ?005Q?Q? Q?Q移动式矿用湿式振u旋流除尘器除性能 6 5-68. 优异Q当除尘风速处?10?2 m/s Ӟ除尘器的ȝ 除效率达?8%以上Q呼吸性粉除效率达? Q? 9Q?Carlos MQRomo-Kroger.A qualitative study of atmospheric aerosols and particles deposited on flat membrane surfaces by microscopy 96%以上Q阻力低?00 Pa? and other techniquesQJQ?Powder TechnologyQ?006Q?6:235-241. Q?0Q???高效水雾降尘技术的实验研究及工E应用EDQ?湘潭:? 南科技大学Q?009:11-23. ???? 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