氨煙氣調(diào)質(zhì)技術(shù)的研究與應(yīng)用

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1、摘要隨著火電廠粉塵排放標(biāo)準(zhǔn)日益嚴(yán)格，電除塵器越來越難以滿足排放要求。提高電除塵器除塵效率的方法之一是采用煙氣調(diào)質(zhì)技術(shù)。本文分析了氨煙氣調(diào)質(zhì)技術(shù)的機(jī)理、工藝流程及在國外燃煤電廠的工程應(yīng)用。在一定情況下，氨煙氣調(diào)質(zhì)技術(shù)能顯著提高電除塵器效率，是改善電除塵器除塵性能的經(jīng)濟(jì)有效的方法之一。本文結(jié)合實(shí)驗(yàn)分析氨對粉塵性質(zhì)的影響，在煤粉中加尿素制得的粉塵與不加尿素直接制得的粉塵相比，粉塵粒度增大了，粘附性增強(qiáng)了，有利于電除塵器收塵。關(guān)鍵詞：電除塵器，除塵效率，煙氣調(diào)質(zhì)技術(shù)，氨煙氣調(diào)質(zhì)技術(shù)ABSTRACTTheemissionstandardofparticlesinpowerp

2、lantsisincreasinglystrict，SOtheconcentrationofflyashescapedfromElectrostaticprecipitatorcouldnotmeetthedemandofemissionstandard．FluegasconditioningisoneoftheeffectivetechnicalmethodstoimprovetheESP’Scollectionefficiency．Introducedthemechanism，processflows，applicationoftheammoniafluega

3、sconditioning·AmmoniafluegasconditioningincreasesthecollectionefficiencyofESP,itisoneoftheeffectivemeasurestoimprovetheperformanceofESEThesubjectanalyzestheeffectsofammoniabyaddingasmallamountureaincoalcombustion，ammoniaincreasingthemeanparticalsizeandcohesionoftheash．YuQingsong(Envir

4、onmentalEngineering)DirectedbyprofYuanYongtaoKEYWORDS：Electrostaticprecipitator,Collectionefficiency,Fluegasconditioning，Ammoniafluegasconditioning氣

5、．，●J—華北電力人學(xué)碩一l：學(xué)位論文目錄中文摘要英文摘要目錄第一章引言??????????????????????????????l1．1課題研究背景?????????????????????????????．．11．2課題研究現(xiàn)狀???????????????????

6、?????．．21．3課題研究的內(nèi)容和意義?????????????????????．4第二章煙氣調(diào)質(zhì)技術(shù)概述???????????????????52．1．煙氣增濕調(diào)質(zhì)技術(shù)????????????????????????52．2S03煙氣調(diào)質(zhì)技術(shù)???????????????????????62．2．1S03煙氣調(diào)質(zhì)技術(shù)的機(jī)理???????????????????62．2．2S03煙氣調(diào)質(zhì)技術(shù)的工藝流程????????????????72．2．3S03煙氣調(diào)質(zhì)技術(shù)的應(yīng)用???????????????．j???82．3NH3煙氣調(diào)質(zhì)技術(shù)??????????????

7、?????????102．4NH3+S03煙氣調(diào)質(zhì)技術(shù)???????????????????????．．102．5新型煙氣調(diào)質(zhì)技術(shù)??????????????????????????．12第三章NH3煙氣調(diào)質(zhì)技術(shù)的應(yīng)用與發(fā)展????????????．．133．1氨煙氣調(diào)質(zhì)技術(shù)的機(jī)理?????????????????????133．2氨煙氣調(diào)質(zhì)系統(tǒng)的工藝流程???????????????????．153．3氨煙氣調(diào)質(zhì)技術(shù)在國內(nèi)外的應(yīng)用?????????????????173．4調(diào)質(zhì)劑噴入量的控制???????????????????????213．5調(diào)質(zhì)劑來源???

8、??????????????????????243．5．1液氨氣化產(chǎn)生氨???????????????????????????．243．5．2尿素制氨?????????????????????????????．．253．6本章小結(jié)???????????????????????????????．．26第四章氨調(diào)質(zhì)對粉塵性質(zhì)影響的研究????????????????．274．I灰樣的制備????????????????????????????28華北電力人學(xué)碩十學(xué)位論文目錄4．2氨調(diào)質(zhì)對粉塵粒徑分布影響的實(shí)驗(yàn)研究??????????????．284．2．1粉塵粒徑分布

9、的測定方法