高速离心雾化器喷嘴堵塞原因分析及对策

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Mar.2013机 床 与 液 压Hydromechatronics Engineering Vo1.41 No.6DOI：10.3969/j.issn.1001-3881.2013.06.001The Analysis and Countermeasure of CentrifugalAtomizer Nozzle Block UpDING YouqingChongqing University of Science and Technology，Chongqing 401331，China1.IntroductionAbstract：WTE(waste to energy)is one of the ideal methods to deal with MSW (Municipal SolidWastes).But it wil bring seconda polution in the process of combustion.Therefore.the fIugas fr0m WTE plant must be treated through gas purification system.In order to protect environ-merit，the centrifugal high-speed atomizer is used in plant to desulfur and purify flu gas.It is thekey equipment of gas purification system.In this paper，the cause of centrifugal atomizer nozzleblock up has been analysed specificaly and the suggestion of countermeasure has been given。

Key words：atomizer，WTE，nozzle，block upThe centrifugal high-speed atomizer is the key e-quipment in the field of environmental protection in-dustry such as chemical industry，pharmacy，food，environmental protection.In the field of air pollutioncontrolling， the centrifugalused for desulfuration in theaction with others.Therefore，the flue gas can be e-liminated efectively。

gasCenFig.1 indicates the purifying principle of fluein WTE plant.The system mainly consists of thehi - ， ，，，。 ， 。

DING Youqing：The Analysis and Countermeasure of CentrifugalAtomizer Nozzle Block Up 3the main cause of energy consumption.This energyconsumption is greater than that of atomizering.Forsmall size atomizer，the energy consumption of airdraw is especially notable comparing with atomizingrequired energy consumption. Design must diminishthe effect 0f air draw。

Fig.4 The efect of air draw within plateIn the case of closing down，the semi-dry limeslurry will solidify and form block because the semi-dry lime slurry is stop in the nozzle and the ambienttemperature is about 200 centigrade。

5.ConclusionsWhen the nozzle is blocked up，the plate willlose dynamic balance.And it wil cause vibration tothe atomizer.Th e htomizing effect will be reducedgreatly.Clearing nozzle becomes hard work。

From the analysis above.the counterm easure todeal with the nozzle block are below：1 The gap between atomizering plate and pro-tection cover should be smal1.At the same time，inorder to avoid collision or friction，the gap should notbe too smal1.For example，it is 3 millimeters。

2)Sending cold air within the cover to cool theinside of atomizer and to ensure the high pressurewithin cover.It prevents the air from entering the at-omizer from the gap between atomizing plate and COV-er。

3)The cross section size of the nozzle should bedesigned according to that liquid flow is ful of noz-zle。

4)When the atomizer is stop，the nozzle shouldbe passed by clean water。

高速离心雾化器喷嘴堵塞原因分析及对策丁又青重庆科技学院，重庆 401331GUO Yi，WANG Xi.Dry Spraying[M].Beijing：Chemi-cal industry press，1983。

YANG Chengyun，LIN Tengjiao，Ⅱ Runfang.The Inher-ent Characteristics Analysis and Dynamic Response Anal-ysis of the Speed·up Box System[J].China MechanicalEngineering，2003，14(5)：380-382。

Miselati M M.Liquid Distribution andHowinRotaryAt-omizer8D].USA：University of Wiseomin.Madison.1984。

摘要：垃圾焚烧发电是城市生活垃圾处理的最理想方式，但是 它将产生二次污染，因此，必须对烟 气进行净化处理 ，而高速离心雾化器就是用在烟气净化处理 中的关键装备。针对高速 离心雾化器在使用过程 中其喷嘴容易堵塞的现象进行 了分析，并提出了解决方案。

关键词 ：雾化器；垃圾焚烧发电；喷嘴 ；堵塞中图分类号：TH13