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湿式电除尘器在燃煤电厂的应用

[2018-5-11] 点击:

湿电咨询服务: 陶经理18332815001 张经理18633235200

BENWENJIANSHULESHISHIDIANCHUCHENQIDEGONGZUOYUANLI、TEDIANJIGUONEIWAIYINGYONGXIANZHUANG,ZHONGDIANJIESHAOLESHISHIDIANCHUCHENQIZAICAOJINGDIANCHANG1000MWCHAOCHAOLINJIERANMEIJIZUSHANGDEYINGYONGQINGKUANG,BINGDUIGAIJISHUZAISHEJI、YUNXINGZHONGXUYAOZHUYIDEWENTIJINXINGLETANTAO。

JIZUTOUYUNHOUYUNXINGLIANGHAO,CHUKOUYANCHEN、ERYANGHUALIU、DANYANGHUAWUPAIFANGNONGDUFENBIEWEI1.45 mg/m3,13.9mg/m3,21.6mg/m3,SHIXIANLERANMEIYANQI“CHAODIPAIFANG”YAOQIU,WEIDAXINGRANMEIDIANCHANGGAIZAOGONGCHENGYINGYONGSHISHIDIANCHUCHENQITIGONGLEYOUYIDECANKAO。

GUANJIANCI:WESP;RANMEIDIANCHANG;YINGYONG;YUNXING

0 引言

漕泾电厂地处我国经济中心上海市,属于重点控制地区。在严峻的环境形势下,漕泾电厂自我加压,提出燃煤污染物达到“超低排放”要求,并决定在2号机组改造中加装湿式电除尘器(WESP),来满足粉尘的“超低排放”要求。

BENWENZHONGDIANJIESHAOLESHISHIDIANCHUCHENJISHUZAICAOJINGDIANCHANG2HAO1000MVVRANMEIJIZUSHANGDEYINGYONG,TANTAOLEGAIJISHUZAISHEJI、YUNXINGZHONGXUYAOZHUYIDEWENTI,WEIGAIXIANGJISHUZAIDAXINGRANMEIDIANCHANGDEJINYIBUYOUHUAHETUIGUANGTIGONGLEYOUYIDECANKAO。

1 WESP技术简介

1.1 原理及特点

WESPSHIYIZHONGYONGLAICHULIHANSHIQITIDEGAOYAJINGDIANCHUCHENSHEBEI,ZAIRANMEIDIANCHANGZHONGTONGCHANGBUZHIZAITUOLIUSHEBEIHOU,QIGONGZUOYUANLIHEGANSHIDIANCHUCHENQIJIBENXIANGTONG,DOUYAOJINGLIDIANLI、HEDIAN、SHOUJIHEQINGHUISIGEJIEDUAN,BUTONGZHICHUZAIYUGANSHIDIANCHUCHENQICAIYONGZHENDAQINGHUI,WESPCAIYONGYETICHONGXIJICHENJIBIAOMIANLAIJINXINGQINGHUI,JUYOUBUSHOUFENCHENBIDIANZUYINGXIANG,WUFANDIANYUNJIERCIYANGCHENDENGTEDIAN。

WESPBUJINKEYIYOUXIAOCHUQUYANQIZHONGDEPM2.5,TONGSHIHAIKEXIETONGTUOCHUSO3、GONGJIYANQIZHONGXIEDAIDETUOLIUSHIGAOWUDIDENGWURANWU,YIZHI“SHIGAOYU”HE“YANCONGBAIYAN”DEXINGCHENG,KEDADAOQITACHUCHENSHEBEINANYIDADAODEJIDIDEYANCHENPAIFANGXIANZHI(RU<3mg/m3 ),TONGSHISHEBEIBENTIJIEGOUXIAO、ZHANDIMIANJIXIAO。

1.2 国内外应用情况

GUOWAIMEI、RI、OUDENGFADAGUOJIAWESPDEYANZHIQIBUJIAOZAO,JISHUCHENGSHUDUGAO,YIYOUJIN30NIANDEYINGYONGLISHI。JUBUWANQUANTONGJI,YIYOU100YUTAOBUTONGLEIXINGDEWESPYINGYONGYUMEIGUO、OUZHOUJIRIBENDENGGUODEDIANCHANG,QUDELESHIFENXIANZHUDEJIANPAIXIAOGUO。

GUONEIRANMEIDIANCHANGWESPQIBUJIAOWAN,JINNIANLAIYOUYUHUANBAOBIAOZHUNDERIYIYANGE,GUONEIXIANGGUANQIYEJIKEYANYUANSUOJIADALEWESPDEYANFALIDU,TONGGUOZIZHUYANFAHUOYINJINJISHU,BUJINZAIHEXINJISHUSHANGSHIXIANLETUPO,BINGXUNSUDEDAOLEGONGYEYINGYONG,JILEILEYIDINGJINGYAN。

JIEZHI2014NIANDI,GUONEIYIYOUDUOTAO300MWJIYISHANGJIZUWESPTOURENYUNXING,BINGQUDELEJIAOHAODEJIANPAIXIAOGUO。WESPDUIYURANMEIWURANWUDEZHONGDUANZHILIZUOYONGYIDEDAOCHUBUYANZHENG,YENEIZHUANJIAHEZHENGFUYOUGUANBUMENFEICHANGRENKEGAIJISHU。MUQIAN,WESPYICHENGWEIWOGUORANMEIDIANCHANGSHIXIAN“CHAODIPAIFANG”DEZHULIUJISHUZHIYI。

2 项目概况

SHANGHAICAOJINGDIANCHANGLISHUYUZHONGDIANTOUJITUAN,WEIYUSHANGHAISHIJINSHANQUNANDUANDECAOJINGZHENNEI。CHANGZHINANJUSHANGHAISHIQUYUE57km,XIJUSHANGHAISHIHUAZONGCHANGYUE9km。YIQIGONGCHENGANZHUANG2TAI1000MVCHAOLINJIEQILUNFADIANJIZU,YIFENBIEYU2009NIANHE2010NIANJIANCHENGTOUCHAN,BENCIHUANBAOGAIZAOZHENDUICAOJING2HAO1000MWJIZUSHISHI。YAOQIUTONGGUOGAIZAOHOU,CAOJINGDIANCHANGDAQIWURANWUPAIFANGNONGDUZAIJIZHUNYANGHANLIANG6%TIAOJIANXIADADAORANQILUNJIZUBIAOZHUNXIANZHI,ZHEJIANGFEIDAHUANBAOKEJIGUFENYOUXIANGONGSICHENGDANLETUOLIUXISHOUTAHOUXINZENGWESPDEJIANSHERENWU。

3 工程应用

3.1ZONGTIJISHUSILU

上海漕泾电厂1000MW机组中采用的WESP烟气深度净化装置布置在湿法脱硫设施尾部。采用的工艺路线如图1所示:锅炉+脱硝装置+干式电除尘器+湿法脱硫装置+湿式电除尘器。

图1上海潜径电厂2号机1000MW燃煤机组的工艺路线图

TU1SHANGHAIQIANJINGDIANCHANG2HAOJI1000MWRANMEIJIZUDEGONGYILUXIANTU

YANQIXIANJINGGUOTUOXIAOXITONGQUCHUNOX,RANHOUJINGGANSHIDIANCHUCHENQIQUCHUFENCHEN,ZHIHOUZAIJINGGUOSHIHUISHI-SHIGAOSHIFATUOLIUZHUANGZHIQUCHUSO2。TUOLIUTACHULAIHOUWENDUDI、SHIDUDA、FUSHIXINGQIANGDEYANQIZAIJINGGUOWESPJINXINGSHENDUCHULI。

3.2YANQISHEJICANSHUJIXINGNENGYAOQIU

GENJUJISHUXIEYI,BENXIANGMUDEWESPRENKOUYANQICANSHUJIXINGNENGYAOQIUJIANBIAO1。

表1   WESP人口烟气参数及性能要求

表1   WESP人口烟气参数及性能要求

3.3技术方案

BENXIANGMUWESPCAIYONGJINSHUBANSHISHUIPINGYANQILIUSHISHIDIANCHUCHENJISHU,GAIJISHUJUYOURUXIAJISHUTEDIAN:

⑴ GAOXIAODEPENLINXITONG。CAIYONGWUHUAXIAOGUOLIANGHAODEPENZUI,ZAIBUDUANDIANQINGKUANGXIA,DUIFANGDIANJIHEJICHENBANJINXINGLIANXUCHONGXI,YIN、YANGJICAIYONGTONGYITAOPENLINXITONG,PENLINFUGAILVDA120%,CHONGFENBAOZHENGSHIYANQIZHONGFENCHEN、PM2.5, SO3QIRONGJIAODENGFUHEWURANWUDEYOUXIAOQUCHU,QUCHUXIAOLVGAO,XITONGJIANDAN,YUNXINGWENDINGKAO。

⑵ TESHUDEJIPEIXINGSHI,QUEBAOZUIJIAYUNXINGCANSHU。CAIYONGZHENCIXIANPEIJINSHUPINGBANSHIYANGJIBAN,TONGJIJIANJU300mm,JIBANCHENGMOJUNYUN,ZHEIZHONGJIPEIYUPENLINXITONGHEGAOYAGONGDIANXIANGPIPEI,KEYIHUODEZUIJIADIANQIYUNXINGCANSHU,YOUXIAOBAOZHENGZHANGQISHIXIAN“CHAODIPAIFANG”。

⑶ DIHAOSHUILIANG,WUXULINGSHEFEISHUICHULIXITONG。WESPNEIBUDABUFENXUNHUANSHIYONG,SHAOLIANGDEWAIPAISHUIKEZHIJIEJINRENTUOLIUXITONGZUOWEITUOLIUBUCHONGSHUI。

⑷ YOULIANGDESHEJI,KANGFUSHIXINGHAO,SHEBEIXINGJIABIGAO。WESPDEYUNXINGTIAOJIANELIE,YIYINQIFUSHI。YINCI,KEXUEHELIDIXUANZELEGEBUJIANDEJIEGOUCAILIAO。

① CONGJIEGOUCAILIAOSHANGJIANG,QIAOTISHISHISHIDIANCHUCHENQIZHONGZUIANQUANYINTONGCHANGCAIYONGPUTONGGANG,WEIFANGZHIFUSHI,JIANGQINEIBIAOMIANTUFULELINPIAN,ANZHUANGSHIHAITEBIEDUIQIAOTINEIBIAOMIANDEYIFUSHIDIANJINXINGJIAQIANGFANGFUCHULI,RUHANJIEDIAN、GOUJIANLIANJIECHUJIGAIBANDENG。

② JICHENBANHEFANGDIANJICAIYONGBUXIUGANGCAILIAO(316L),BIAOMIANJUYOUJIAOQIANGDEKANGFUSHINENGLI,TONGSHIJIANGYICHANSHENGFUSHIDELIANJIEDIANJIANZHIZUIXIAO,QUEBAOZHANGSHIJIANWENDINGYUNXING。

③ PENLINSHUISHIJINGNaOHSHUIRONGYEZHONGHEHOUXUNHUANSHIYONG,QIELIANXUPENLIN,QUEBAOSUOYOUNEIBUJIANSUOJIECHUDAODERONGYEDEpHZHISHIZHONGBAOCHIPIANJIANXING,YIZHISUANFUSHIDEFASHENG,CONGERYANZHANGYINYANGJIDESHIYONGSHOUMING。

GENJUWESPRENKOUYANQICANSHUJISUOYAOQIUDADAODEXINGNENGZHIBIAO,CAIYONGFEIDAGONGSIDEXUANXINGCHENGXUJISUANBINGJIEHESHIJIGONGCHENGYINGYONGJINGYAN,ZUIZHONGQUEDINGLEWESPSHENDUJINGHUAZHUANGZHIDEZHUYAOSHEJICANSHU。WESPZHUYAOJISHUCANSHUJIANBIAO2,FANGANTURUTU2SUOSHI。

表2  WESP的主要设计参数

WESP的主要设计参数


图2   WESP外形图

3.4 投运效果

BENXIANGMUDEWESPYU2014NIAN11YUEANZHUANGWANBI。TOUYUNZHIHOUSHIWUTURUTU3SUOSHI,CAOJINGDIANCHANG1HAOHE2HAOJIZUDEYANCONGLIANZAIYIQI,LIANGGEYANCONGCHUKOUYIGEBAIYANNIAONIAO,YIGEJIBENKANBUDAOBAIYAN,KANBUDAOBAIYANSHIYINWEIJIAZHUANGWESPZHIHOUSHIXIANLEJIEJINGPAIFANG。

TU3   WESPSHIWUTU

2014NIAN11YUE20RI,CAOJINGDIANCHANG2HAOJIZUYANQICHAODIPAIFANGGONGCHENGSHUNLIBINGRENXITONGYUNXING,SHISHIDIANCHUCHEN、MGGH、TUOLIUZENGRONGGAIZAODENGSHESHIQUANBUTOUYUN,WANCHENGLEGEXIANGJIANSHEMUBIAO。12YUE7RI,GAIYANQICHAODIPAIFANGSHIFANGONGCHENGSHUNLITONGGUO168XIAOSHIYUNXING,ZHENGSHITOUYUN。JINGQUANWEIBUMENCESHIJIEGUOXIANSHI,GAIJIZUDEYANCHENPAIFANGLIANGJINWEI1.45 mg/m3,ERYANGHUALIU、DANYANGHUAWUPAIFANGNONGDUYEFENBIEZHIYOU13. 9mg/m3 ,21.6mg/m3,JUNYOUYURANJIPAIFANGBIAOZHUN。

WESPDUIFENCHENTUOCHULVWEI81.95%,SO3TUOCHULVWEI69.72%WUDITUOCHULVWEI87.35%,JUNDADAOLESHEJIZHIYAOQIU,SHICAOJINGDIANCHANGZAIJIANPAIFANGMIANMAISHANGLEYIGEZHANXINDETAIJIE。ZUOWEISHANGHAISHISHOUGEJIEJINGPAIFANGSHIFANGONGCHENG,BENGONGCHENGDUIRANMEIJIZUDAQIWURANWUSHENDUZHILIFAHUILELIANGHAODESHIFANTUIGUANGZUOYONG。

4 设计及运行注意事项

SHISHIDIANCHUCHENJISHUSHIJINJINIANCAIFAZHANQILAIDEXINXINGJISHU,WEIBAOZHENGQIYOULIANGHAODEXINGNENG,BINGNENGZHANGQIANQUANKEKAODIYUNXING,ZAISHEJIJIYUNXINGGUANLISHANGYINGZHUYIYIXIASHIXIANG:

(1)合理设计电极结构

DIANJISHISHISHIDIANCHUCHENQIDEHEXINBUFEN。DIANJIDEPEIZHIXINGSHI、JIEGOUJICAILIAODEXUANYONG,SHISHISHIDIANCHUCHENQIZHENGCHANGYUNXINGDEGUANJIAN。GENJUBUTONGDEGONGKUANGTIAOJIAN,YOUZHENDUIXINGDIDUIDIANJIWEIHU,KEYOUXIAODEGAISHANSHISHIDIANCHUCHENQIDEYUNXINGZHUANGKUANG。

(2)绝缘装置的清洁与加热

YOUYUJUEYUANZHUANGZHIYUHANCHENYANQIZHIJIEJIECHU,HUIZAOCHENGJIHUIJIANGDIJUEYUANXINGNENG,YINCIXUCAIQUCUOSHISHIJUEYUANZHUANGZHIBAOCHIQINGJIECHUCHENQIYUNXINGYONGQIFENGGEJUEHANCHENYANQIYUJUEYUANCITAOJIECHU,XUSHEZHIDIANJIAREZHUANGZHI。

(3) 系统的机电一体化控制程度

WESPSHEZHIZAISHIFATUOLIUHOU,XUYINGYONGSHUIXUNHUANDENGGONGYIXITONG。YINCI,DUIGAIXITONGSHIXINGJIDIANYITIHUAKONGZHISHEJI,CAISHISHIXITONGBAOCHILIANXULIANGHAOYUNZHUANQIANGYOULIDEBAOZHENG。

(4) 可靠的防腐与保温措施

YINYANGJICAILIAOYIXUANYONG316LHUOGENGNAIFUSHIDECAILIAO;PENLINXITONGPENZUIYINGCAIYONGBUXIUGANGHUOFEIJINSHUFANGFUCAIZHI,PENLINGUANLUXITONGYINGSHEZHICHONGXIPANGLUGUANDAO,GENJUHUANJINGWENDUSHEZHIBAOWENCENGJIBANRE,BINGZHUANGYOUGUOLVQI;WAIQIAOTICAIYONGBOLILINPIANNEICHEN,SHEYOUBIYAODEFANGDONGHEBAOWENCUOSHI。

(5) 喷淋水的循环利用

SHISHIDIANCHUCHENQICHONGXISHUICAIYONGBISHIXUNHUAN,DANSHIYINSHUIZHONGHANCHENLIANGZENGJIA,XUBUDUANBURENYUANSHUI,PAICHUFEISHUI。FEISHUILIANGYUYANQIZHONGHANCHENLIANGCHENGXIANXINGGUANXI。FEISHUIYIBANJINRUTUOLIUXITONG,CISHIXUKAOLVTUOLIUXITONGSHUIPINGHENG;RUOFEISHUIBUNENGJINRENTUOLIUXITONG,XUKAOLVZHEIBUFENSHUIDECHULI。

5 结语

WESPJIYUQIJISHUTEDIAN,KESHIXIANDUIPM2.5,SO3JICHUWUQIHOUYANQIZHONGXIEDAIDESHIGAOWUDIDENGWURANWUDEGAOXIAOTUOCHU,ZAICAOJINGDIANCHANG2HAOJI1000MWRANMEIJIZUSHANGDECHENGGONGYINGYONGBIAOMING,QIJIANPAIXIAOGUOMINGXIAN,KECHEDIJIEJUEKUNRAODIANCHANGDE“SHIGAOYU”WENTI,DADAGAISHANLEDIANCHANGDEZHOUBIANHUANJING,WEIDAXINGRANMEIDIANCHANGCAIYONGSHISHIDIANCHUCHENQISHIXIAN“CHAODIPAIFANG”TIGONGLEYOUYIDECANKAO。

ZHUZUOZHEJIANJIE  CHENZHAOMEI,NV,GAOJIGONGCHENGSHI。

BENWENFABIAOYU《FADIANCHANG“CHAOJINGPAIFANG”YANQIZHILIJISHUJITUOLIU、TUOXIAO、CHUCHENJISHUGAIZAOJINGYANJIAOLIUYANTAOHUILUNWENJI》 2015

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