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湿电除尘技术   众鑫棋牌 > 湿电除尘技术

电除尘技术:提高热电厂电除尘器效率的技术改造方案

[2019-4-12] 点击:

湿电咨询服务: 陶经理18332815001 张经理18633235200

WEILETIGAOZHONGYOUDIANNENGREDIANYIGONGSIDIANCHUCHENQIXIAOLV,SHIJINGHUAHOUDEYANQIHANCHENLIANGDADAOGUOJIAHUANBAOYAOQIU,ZHENDUIDIANCHUCHENQIBUJIANCHENZHONGZHOUCHENG、YINJIXIAN、ZHENDAZHEN、GONGDIANSHEBEIJICHUCHENQINEIBUDIANCHANGCUNZAIWENTI,DUIQIJINXINGLEJISHUGAIZAO,SHICHUCHENXIAOLVCHAOGUO99.9%,QUEBAOLEYANQIPAIFANGHANCHENLIANGDIYUGUOJIAPAIFANGBIAOZHUN,BINGWEITONGLEIYOUTIANQIYEDUIDIANCHUCHENQIDEGAIZAOTIGONGYIDINGDEJIEJIAN。

GUANJIANCI:DIANCHUCHENQI; BUJIAN; DIANCHANG; JISHUGAIZAO; TIGAOCHUCHENXIAOLV; ANQUANHUANBAO;

SUIZHEWOGUOGONGYEFAZHANSHUIPINGDERIYITIGAO,GUOJIADUIHUANBAODEKONGZHILIDUYEYUELAIYUEDA,DUIDAQIWURANWUPAIFANGBIAOZHUNDEYAOQIUYEYUELAIYUEYANGE。DAQINGYOUTIANREDIANCHANGZAIYONGDELIANGZHONGXINGHAODEDIANCHUCHENQI,FENBIEWEI2GF158MXINGHERWD/340XING。2GF158MXINGDIANCHUCHENQISHIWOGUO20SHIJI90NIANDAICHUQICHANPIN,YOUYUSHOUDAODANGSHIJISHUSHUIPINGXIANZHI,JIASHANGSHIYONGNIANXIANJIAOZHANG、SHEBEILAOHUA,QIXINGNENGZHUNIANXIAJIANG。RWD/340XINGDIANCHUCHENQIWEI21SHIJITOUCHANDESHEBEI,SUIRANGEFANGMIANXINGNENGJIAOHAO,DANJINGGUO4NIANDEYUNXING,QICHUKOUYANQIHANCHENNONGDUNANYIDADAOYUANSHEJIZHIBIAO。WEILEMANZUGUOJIADUIHUOLIFADIANCHANGYANQIPAIFANGDEXINYAOQIU,BIXUDUIDIANCHUCHENQIBUJIANJIDIANCHANGJINXINGJISHUGAIZAO,CAIYONGXINDEJISHU,TONGGUOJIEGOUXINGDEGAILIANG,JINYIBUTIGAOXIANYOUDIANCHUCHENQIDECHUCHENXIAOLV。

1 电除尘器概况

ZHONGYOUDIANNENGREDIANYIGONGSIGONGYOU4TAIDIANCHUCHENQI (1HAO、2HAO、3HAO、4HAO) ,FENBIEYU3TAI200 MW、1TAI300 MWFADIANJIZUXIANGPEITAO,1HAO、2HAO、3HAODIANCHUCHENQIXIANGJIYU1991、1992、1993NIANTOURUYUNXING,ZHIJINYIYOU20YUNIAN,SHEJICHUCHENXIAOLVWEI98%,YANGJIBAN1088KUAI,YINJIXIAN4224GEN。MEITAICHUCHENQIFENBIEYOU8TAOYINJIHE4TAOYANGJIZHENDACHUANDONGZHUANGZHI。YIN、YANGJIZHENDAZHUANGZHIZHENDAZHOUSHIKAOZHUTIEHUADONGCHENZHONGZHOUCHENGZHICHENG,YANGJIBANCAIYONG480CXING,YINJIXIANCAIYONGRSXINGGUANZHUANGMANGCIXIAN,ZHENDAZHENCAIYONGDANKONGJIEGOU。DANTAICHUCHENQICHULIYANQILIANGWEI240m3/s,200MWJIZUCHUCHENQIBIJICHENMIANJIWEI52.41m2。4HAODIANCHUCHENQIYU2013NIANTOUCHANYUNXING,SHEJICHUCHENXIAOLVWEI99.65%,CHUKOUYANQIHANCHENNONGDUXIAOYU30mg/m3 (0℃,101.325kPa) ,CHUCHENQICHULIYANQILIANGWEI583m3/s,GONGDIANZHUANGZHICAIYONGGONGPINDIANYUAN。

2 电除尘器存在的主要问题

2.1 尘中轴承

CHENZHONGZHOUCHENGJIZHENDACHUANDONGZHOUCHENG,SHUHUADONGZHOUCHENG,QICAIZHIWEIZHUTIE,YUZHENDAZHOUZHIJIANJIECHUSHUYUGANMOCA,ZHEIZHONGJIEGOUYIJICUNFENCHEN,YOUYOUJIAODADEMOCALI,RONGYIFASHENGKAZHOUXIANXIANG;SUOYI,ZHENDAZHOUJIZHOUCHENGJIYIMOSUN,ZHISHIYINJIZHENDAZHOUXIACHEN,BINGZAOCHENGDIANCIZHUANZHOUSUILIEDENGGUZHANG,CONGERDAOZHIYINJIZHENDASHILING,JIBANDALIANGJIHUI,XIANGYINGDIANCHANGBEIPOTINGZHIYUNXING,YANZHONGYINGXIANGCHUCHENXIAOLV。TONGSHI,GAIBUJIANSHIYONGSHOUMINGDUAN,GENGHUANPINFAN,WEIHUGONGZUOLIANGDA,YINGXIANGDIANCHANGANQUANYUNXING。

2.2 阴极线

阴极线采用RS型管形芒刺线,由于运行时间较长,该阴极线芒刺已经变钝,放电性能达不到使用要求,整根芒刺线腐蚀也比较严重,极易造成断线及脱落等故障,使电场内部发生短路或严重闪络,进而被迫停止该电场运行,导致除尘效率下降。同时,该类型阴极线在放电过程中存在电流死区现象,这也限制了其性能的有效发挥。

2.3 振打砧

ZHENDAZHENDEZHUYAOZUOYONGSHIWEIYANGJIBANCHUANDIZHENDALI,CAIYONGDESHIDANKONGJIEGOU,QICAIZHIWEIZHUTIE。ZHENDAZHENYULIANGKUAIXIAJIABANZHIJIANTONGGUOLUOSHUANLIANJIEGUDING,XUANZHUANZHONGDEZHENDACHUIBUDUANJIDAZAIZHENDAZHENSHANG,ZHENDALITONGGUOXIAJIABANCHUANDIJIYANGJIBAN,JINERQINGCHUYANGJIBANSHANGDEJIHUI。SHIJIYUNXINGZHONGZHENDAZHENCHANGCHANGFASHENGYULIANJIELUOSHUANKAIHANXIANXIANG,BINGFASHENGTUOLUO,CONGERSHIZHENDALIYICHANGSHUAIJIAN,YINGXIANGCHUCHENXIAOLV。

2.4 供电设备

GONGDIANSHEBEICAIYONGDESHIDANXIANGGONGPINDIANYUAN,CIZHONGZHUANGZHIBOXINGMAIDONGDA,SHUCHUPINGJUNDIANYADI,DIANYUNGONGLVDI;GONGLVYINSHUXIAOYUHUODENGYU0.7,DIANNENGZHUANHUANXIAOLVXIAOYUHUODENGYU70%;BUPINGHENGGONGDIAN。

2.5 电场

200MWJIZUDIANCHUCHENQIBIJICHENMIANJIZHIYOU52.41m2,NEIBUKONGJIANXIAZHAI,GONGYOU4GEDIANCHANG,MEIGEDIANCHANGCHUCHENFANGSHIQUANBUCAIYONGDIANCHUCHEN,CHUCHENXIAOGUOJIAOCHA。ZHEISHIYINGXIANGCHUCHENXIAOLVDIDEZHUYAOYUANYINZHIYI。

3 电除尘器技术改造方案

WEILEQUEBAOGAIZAOHOUDIANCHUCHENQIDECHUCHENXIAOLVDAYUHUODENGYU99.9%,CAIJILEDIANCHUCHENQIDEFEIHUIYANGBENJINXINGLELIHUAFENXI,BINGJIEHEMUQIANDIANCHUCHENQIDEYUNXINGCANSHUYIJIDIANCHUCHENQIJIANXIUZHUANGKUANG,TICHURUXIAFANGAN:

3.1 阴极线改造 (200MW机组)

3.1.1 将1电场改为RSB芒刺线

RSGUANXINGMANGCIXIANSHIMUQIANGUONEIYINGYONGZUIGUANGFANDEJIXIAN,DANGAIJIXIANDEXIANDIANLIUMIDUZAIJIXIANZHONGBUSUANDA,YOUYUQIYUANGUANQUYUMEIYOUFANGDIANJIANDUAN,BUCHANSHENGDIANYUNFANGDIAN,YIXINGCHENGDIANLIUSIQU;ERRSBGUANXINGMANGCIXIANZHENGHAOJIEJUELEDIANLIUSIQUWENTI。ZAIDIANCHANGNEI,DANGMANGCIXIANTONGSHANGGAOYAZHILIUDIAN,ZAICIJIANSHANGNENGCHANSHENGQIANGLIEDEDIANYUNFANGDIAN,QIANGLIEDELIZILIUNENGPOHUAIFUKONGJIANDIANCHANGXIAOYING,BIMIANCHUXIANDIANYUNBISAI;TONGSHI,QIANGLIEDELIZILIUHAINENGCHANSHENGSUDUHENKUAIDEDIANFENG,DIANFENGNENGCUSHIDAIDIANFENCHENXIANGYANGJIBANYIDONG,XIANZHUJIAKUAIFENCHENDEQUJINSUDU。

GAIJIXIANDEXIANDIANLIUMIDUBIYUANJIXIANDA,CONGERTIGAOLEYANGJIBANDEDIANLIUMIDUJUNYUNXING,ZAIBUGAIBIANYUANJIJIANJUQINGKUANGXIA,PEIZHIGAIJIXIANJIUNENGTIGAOCHUCHENXIAOLV。

3.1.2 电场阴极线加装保护槽

YUANYINJIXIANYUYINJIXIAOKUANGJIALIANJIEZHISHIKAOLUOSHUANLIANJIE,DIANHANHOUDELUOSHUANYIDANKAIHAN,JIYIZAOCHENGYINJIXIANTUOLUO。YINJIXIANJIAZHUANGDEBAOHUZHUANGZHIJIBAOHUCAO,RUTU2SUOSHI。BABAOHUCAOHANJIEZAIYINJIXIAOKUANGJIASHANG,BAYINJIXIANXIANCHARUCAONEI,ZAIYULUOSHUANLIANJIE,JISHILUOSHUANTUOLUOLE,YINJIXIANRENGKAZAICAONEI,BUHUIZAOCHENGJIXIANYIWEIERZAOCHENGDUANLU。BAOHUCAOSUIRANJIANDAN,DANFAHUIDEZUOYONGFEICHANGMINGXIAN。

3.2 尘中轴承改造 (200MW机组)

BAHUADONGZHOUCHENGGAIZAOWEITUOGUNSHICHENZHONGZHOUCHENG,ZHEIZHONGJIEGOUBUYIJICUNFENCHEN,YOUYOUJIAOXIAODEMOCALI,BUYICHANSHENGKAZHOUXIANXIANG,SHIYONGSHOUMINGZHANGQIEYUNXINGANQUANKEKAO。QISHOUMINGSHIPUTONGZHUTIEHUADONGZHOUCHENGDE5~6BEI,ZHEIZHONGJIEGOUSUIRANJIAOZHUTIEHUADONGZHOUCHENGFUZA、JIAGESHAOGAO,DANSHIYONGXIAOGUOJIAOHAO,SHIJIAOLIXIANGDEZHOUCHENG。

3.3 振打砧改造 (200MW机组)

BAYUANZHENDAZHENDANKONGGAIWEISHUANGKONG,CAIZHIGENGHUANWEIZG35,ZHEIYANGSHIZHENDAZHENJIDEDAOLEJIAGU,YOUZENGQIANGLENAIMOXING,QUEBAOLEYANGJIBANDEZHENDACHUANDIXIAOGUO,YOULIYUTIGAOCHUCHENXIAOLV。

3.4 供电设备改造 (300MW机组)

DUIYUANXINGHAOWEIZZDJ-1700MA/72KV-HWDEGONGDIANSHEBEIJINXINGGAIZAO,1、2DIANCHANGGAIWEISHIYONGSIR4GAOPINDIANYUAN,3、4DIANCHANGGAIWEISHIYONGEHC-11-MMAICHONGDIANYUAN。

GAOPINDIANYUANSHIYONGYUFENCHENKELIJIAODADEDIANCHANG,JIQIANJIDIANCHANG;MAICHONGDIANYUANSHIYONGYUFENCHENKELIJIAOXIAODEDIANCHANG,JIMOJIDIANCHANG。

3.5 电场改造 (200MW机组)

YINSHOUZHANDIKONGJIANJIDIANCHUCHENQINEIBUXIAZHAIXIANZHI,ZAIDIANCHUCHENQIBUNENGJIAGAO、JIAKUANJIJIAZHANGDEQINGKUANGXIA,BAYUANDIANCHUCHENQIGAIWEIDIANDAISHICHUCHENQI。YUAN1DIANCHANGBAOLIUBUBIAN,RENGCAIYONGDIANCHUCHEN,2、3、4DIANCHANGGAIWEIBUDAICHUCHEN。MEITAIJIZUDIANCHANGNEIBUPEIYOUBUDAI7488GE。

4 应用效果

1HAO、2HAO、3HAO、4HAODIANCHUCHENQIGAIZAOGONGCHENGYU2003NIANZHI2017NIANFENPICIDISHISHIWANBI。QUANBUGAIZAOGONGCHENGJINGGUOSHIJIJIANCEHEYANZHENG,QUDELEJIAOHAODEXIAOGUO。

4.1 尘中轴承及阴极线故障测试

GENJUCHENZHONGZHOUCHENGJIYINJIXIANLINIANLAIFASHENGDEGUZHANGCISHUHUIZHICHUTONGJITU。GAIZAOQIANHOUDECHENZHONGZHOUCHENGJIYINJIXIANGUZHANGLVRUTU1、TU2SUOSHI。

电除尘器尘中轴承故障率

TU1 CHENZHONGZHOUCHENGGUZHANGLV

YOUTU1KEZHI,CHENZHONGZHOUCHENGDAXIUHOUYUNXING1NIANZUOYOUGUZHANGLVJIUHUIZHUJIANSHENGGAO,ERGAIZAOHOU3TAIDIANCHUCHENQICHENZHONGZHOUCHENGYIZHIWUGUZHANGFASHENG,WANQUANKEWENDINGYUNXINGZHISHAOYIGEDAXIUQI。

阴极线故障率

TU2 YINJIXIANGUZHANGLV

YOUTU2KEZHI,GAIZAOQIANYINJIXIANFASHENGGUZHANGDECISHUZAIZHUNIANSHENGGAO,GAIZAOHOUZHIYOU1HAODIANCHUCHENQIZAI2005NIANFASHENGGUOYICIYINJIXIANGUZHANG,ZAIYIGEDAXIUQINEIDADAJIANGDILEYINYINJIXIANTUOLUOGUZHANGERDAOZHIDUANLUDEXIANXIANGFASHENG。

4.2 CHUCHENXIAOLVJIYANQIHANCHENNONGDUCESHI

在4台电除尘器改造前,由诸暨电除尘器研究所对1号、2号、3号、4号电除尘器进行了除尘效率及烟气含尘量测试。1号电除尘器效率为98.11%,出口含尘浓度为285.39mg/m3,2号电除尘器效率为99.10%,出口含尘浓度为107.99mg/m3,3号电除尘器效率为99.26%,出口含尘浓度为108.11mg/m3,4号电除尘器效率为99.55%,出口含尘浓度为50.10mg/m3。
2017年9月14—15日,由黑龙江省电力科学研究院分别对改造后的3台电除尘器 (200 MW机组) 进行了除尘效率及烟气含尘量测试。1号电除尘器效率为99.92%,出口含尘浓度为26.21mg/m3,2号电除尘器效率为99.91%,出口含尘浓度为27.92mg/m3,3号电除尘器效率为99.90%,出口含尘浓度为28.15mg/m3;经过脱硫塔后,最终排放的烟气含尘量约为11mg/m3。

2018NIAN5YUE29RI,YOUXIANCHANGZAIXIANJIANCESHUJUKEZHI,4HAODIANCHUCHENQICHUKOUHANCHENNONGDUWEI28.12mg/m3,JINGGUOTUOLIUTAHOU,ZUIZHONGPAIFANGDEYANQIHANCHENLIANGWEI3.9 mg/m3。

1HAO、2HAO、3HAO、4HAODIANCHUCHENQIJUNDADAOLEGAIZAOYAOQIUZHIBIAOJIGUOJIAMUQIANYAOQIUYANQICHUKOUHANCHENNONGDUDIYU30mg/m3YIXIADEBIAOZHUN,BINGQIEYUANZI4HAODIANCHUCHENQIDEYANQIJINGGUOTUOLIUTAHOU,YIJINGDADAOLEGUOJIACHAODIPAIFANGDEBIAOZHUN。

DUI4TAIDIANCHUCHENQIBUJIANSHISHIJISHUGAIZAOHOU,CONGCESHIJIYUNXINGQINGKUANGKAN,YIN、YANGJIZHENDAZHUANGZHIWEIFASHENGGUOKAZHOUXIANXIANG;TUOGUNSHIZHOUCHENGMOSUNLIANGXIAO,YUNXINGLIANGHAO;YINJIXIANFANGDIANXINGNENGGAO,HENSHAOFASHENGTUOLUOZAOCHENGDIANCHANGDUANLUXIANXIANG;SHEBEIYUNXINGANQUANXINGHEWENDINGXINGMINGXIANTIGAO,CHUCHENXIAOLVDAFUTISHENG,JIENENGXIAOGUOXIANZHU,DADAOLEJINGHUAYANQIDEMUDE。

5 改造后的效益

1) JINGJIXIAOYI。MEINIANKEJIESHENGYINYANGJIZHENDAZHOU、JUEYUANCIZHOU、GUOLUFENGJIYELUNDENGCAILIAOFEIYONGYUE30.6WANYUAN,NIANKEJIEYUEDIANFEI152.64WANYUAN,GONGJI183.24WANYUAN。

2) HUANBAOXIAOYI。GAIZAOHOUDEDIANCHUCHENQIBUJINDADAJIANGDILESHEBEIDEGUZHANGLV,ERQIENENGGOUSHIXIANQIYOUHUAYUNXING,ZHISHIDIANCHUCHENQIDIANCHANGTOURULVDA100%,CHUCHENXIAOLVCHAOGUO99.9%,QUEBAOLEYANQIPAIFANGHANCHENLIANGDIYUGUOJIAPAIFANGBIAOZHUN,GAISHANLEYOUTIANHUANJING,JIANGDILEPAIFANGWUDUIDAQIDEWURAN。

6 结束语

DUIREDIANYIGONGSI4TAIJIZUDIANCHUCHENQIDIANCHANGBUJIANJINXINGJISHUGAIZAOSHICHENGGONGDE,ZHEIJIBAOZHENGLESHEBEIANQUANYUNXINGDEKEKAOXING,YOUXIANZHUTIGAOLEDIANCHUCHENQIDEJINGHUAXINGNENG,SHIDIANCHUCHENQICHUKOUYANQIHANCHENNONGDUDADAOGUOJIA《DAQIWURANWUPAIFANGBIAOZHUN》,QIZHONG4HAODIANCHUCHENQIYANQIPAIFANGHANCHENLIANGYIJINGDADAOLEGUOJIA《DAQIWURANWUCHAODIPAIFANGBIAOZHUN》。

1) CIXIANGJISHUGAIZAOGONGCHENGJUYOUTUIGUANGYINGYONGJIAZHI,WEIQITADIANCHANGTONGLEIXINGDIANCHUCHENQIDEDIANCHANGBUJIANGAIZAOTIGONGLECANKAODEYANGBEN。

2) JINGJIXIAOYIMINGXIAN,WEIDAQINGYOUTIANREDIANCHANGZHENGCHUANGDONGBEIDIQUYILIUQIYECHUANGZAOLEYOULITIAOJIAN。

3) YOUXIAODIGAISHANLEYOUTIANZIRANHUANJING,XIANZHILEWURANWUDEPAIFANG,HUANBAOXIAOYIXIANZHU。

BENWENFABIAOYU《SHIYOUSHIHUAJIENENG 》ZUOZHEJIANJIE: LIZHICAI,CONGSHIDIANLIXITONGDIANCHUCHENQI、TUOLIUYUNWEI、BENGLEI、FAMENDENGQITASHEBEIJIANXIUYUYANJIUGONGZUO。

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