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硅铁电炉烟气除尘系统的设计要点

发布日期:2019-01-09 13:25    关键字:

ZHAIYAO:ZHENDUIGUITIEDIANLUYANQICHUCHENXITONGSHEJIZHONGDEYOUGUANJISHUWENTIJINXINGLETANTAO,TICHULEGONGCHENGSHEJIZHONGYINGGAIKAOLVDEGEZHONGYINSUJIQIYOUGUANSHEJICANSHUDEXUANQU,YIGONGGONGCHENGSHEJIZHECANKAO。

GUANJIANCI:DIANLUYANQI CHUCHEN SHEJI

1 QIANYAN

BASHINIANDAIYILAI,OXINJIANLEYIPI6000kVA~16500kVAGUITIEDIANLU。JUNCAIYONGBANFENGBISHIYANZHAO,SHEZHIGANFABUDAICHUCHENQIJINGHUAZHUANGZHI。QIYANQIJINGHUAXITONGJIANTU1。BENWENJIUGONGCHENGSHEJIZHONGYINGGAIKAOLVDEGEZHONGYINSUJINXINGTANTAO。

TU1 GUITIEDIANLUYANQICHUCHENXITONG

1—DIANLU;2—ZHAOZI;3—YANDAO;4—LENGQUEQI;5—BUDAIGUOLVQI;6—FENGJI;7—DIAOJIEFA;8—PAIQIKOU。

2 PAIYANZHAODESHEJI

DIANLUYANQIBUJIXIAOGUODEHAOHUAIZAIYIDINGCHENGDUSHANGQUJUEYUYANZHAODEJIEGOUXINGSHI。GUITIEDIANLUCAIYONGBANFENGBISHIAIYANZHAODAITIGAOYANZHAO,YIJIANSHAOPAIYANLIANG,FANGZHILUNEIYANQIWAIYI,KEGAISHANGONGRENCAOZUOHUANJING。CIZHONGYANZHAODEPAIYANLIANGYUEWEILILUNLUQILIANGDE50~60BEI,YIBANSHEJICHENGLIUJIAOXINGZHAO,GENJUGONGYIXUYAOCAIYONGSHUILENGGUJIAZHENGTIJIEGOU,BIANYUSHEBEIJIANXIU,ZAICHENYOUNAIHUOCAILIAODELIUJIAOXINGZHAOLIUGECEMIANZHONGDESANGECEMIANZHUANGSHEJIALIAOMEN,JIALIAOMENZAIYIBANQINGKUANGXIABUKAIQI,ZHISHIZAIJIALIAOHUODAOLUCAOZUOSHIKAIQIYIGECEMIAN,YIJIANSHAOYEFENGJINRU。

CAIYONGAIYANZHAOBIGAOYANZHAODEPAIYANLIANGSHAO50%,YANQIWENDUYUE400℃~700℃,DANGZHAONEIYANQIWENDUDAYU500℃SHI,YANZHAODECAIZHIYINGWEINAIREGANG,TEBIESHIYANZHAOCEMIANZHONGDEJIALIAOMENJIEGOUDESHEJIYAOFANGZHIBIANXING,KAIQILINGHUO,BINGTIGAOQIMIFENGXING。

3 FANGSANYANCONGDESHEJI

3.1 YANQICHENGFANGSANZHUANGTAIXIADEOJIAPAIYANWENDUXUANZEBANFENGBIDIANLUDEYANQICHENGFANGSANZHUANGTAIXIADEOJIAPAIYANWENDU(BUTONGYUYANQIJINGHUAXITONGTOURUYUNXINGDEPAIYANWENDU)YINGDANGXUANQU400℃WEIYI,CIYANQIWENDUXIADEDIANLULIAOMIANWENDUSHIOJIADE,CIWENDUJIBAOZHENGLECHONGFENLIYONGYANQIDEWULIRELAIJIAREWULIAO,YELIYUDIANJIBEISHAO,YOUFANGZHILEGUISHIPOSUIEREHUALULIAOTOUQIXINGDEXIANXIANGFASHENG。

3.2 OJIAYANWENXIAFANGSANYANQILIANGDEQUEDING

DANGHAIYUANJIDEPEIBIWEI50%JIAOTAN、50%MEISHI,YANQIWENDUWEI400℃,ZHENGCHANGTIAOJIANDEPAIYANLIANGWEIMEItCHANPIN60000Nm3,CIHUOTIAOJIANDEPAIYANLIANGWEIMEItCHANPIN120000Nm3。

3.3 YANQITONGGUOFANGSANYANCONGDEQISUXUANQU

SHEJIJISUANYINGANCIHUOTIAOJIANXIADEYANQILIANGZUOWEIJISUANYIJU,QIQISUYIBANXIANQU7~13m/s,TONGSHIYIZHENGCHANGYANQILIANGJINXINGHESUAN,JINGZONGHEBIJIAOLAIQUEDINGQIFANGSANYANCONGDETONGJING。

3.4 YANQITONGGUOYANCONGDEWENDUJIANG

DANGYANQIWENDU400℃~500℃SHI,YANQITONGGUOYANCONGDEMEIMIWENDUJIANG,JINSHUCHENZHUANYANCONGYIBANWEI2~2.5℃,JINSHUYANCONGWEI3~4℃。

3.5 YANCONGKUOZHANGSHICHUKOUDESHEJI

WEILEJIANXIAOYANQIPAIRUDAQISHIDECHUKOUDONGYASUNSHI,YINGJIANXIAOPAICHUKOUDESUDU。YANCONGCHUKOUQISUYIBUXIAOYU4m/sWEIYI,YIBANJIANGYANCONGCHUKOUSHEJICHENGKUOZHANGSHIDE,YITIGAOYANCONGDECHOULI。

3.6 FANGSANYANCONGDEFAMEN

FANGSANYANCONGFAMENDESHEJI,YAOQIUCAOZUOLINGHUO,MIFENGXINGHAO,SHIYUDUOCHENTIAOJIAN。DANGYANQIJINGHUAXITONGZHONGDEDAISHICHUCHENQIJINKOUYANWENGUOGAOSHI,YANCONGFAMENZIDONGKAIQI,FANGSANYANQI。

4 YANQIGUANDAODESHEJI

4.1 PAIYANGUANDAODEYANQILIUSU

HELIXUANQUGUANDAOZHONGDEYANQILIUSUSHIBAOZHENGXITONGZHENGCHANGYUNXINGDEZHONGYAOYINSU,LIUSUGUODI,ZAOCHENGGUANDAONEIJIHUI,DUSAIGUANDAO,LIUSUGUOGAO,ZULIZENGJIA,MOSUNGUANBI,YANZHONGSHICHUXIANLOUFENG,YINGXIANGBUJIXIAOGUO。GUANDAODELIUSUFANWEIYIBANXUANQUWEI16~26m/s。DISUWEIZHENGCHANGTIAOJIAN,GAOSUWEICIHUOTIAOJIAN。

4.2 GUANDAODESHENSUOJIE

SHENSUOJIEYINGSHEJICHENGROUXINGDEJIEGOU,SHIGUANDAOREBIANXINGSHIYINQIDETUILIOXIAO,YIJIANHUAZHIJIASHEJI。

4.3 YANQIGUANDAOCAIZHIDEXUANZE

DUIYUTONGGUO550℃YANQIDEJINSHUGUANDAOXUANCAI,YIXUANYONGDIHEJINGAOQIANGDUGANG,SHUSONGDIYU250℃YANQIDEGUANDAOXUANCAIKEYONGDITANGANGHUOGUOLUGANGBAN。

4.4 GUANDAOQINGHUIZHUANGZHI

DANGSHUIPINGGUANDAOGUOZHANGSHI,YINGKAOLVGUANDAOQINGHUIZHUANGZHIZAIGUANDAOFUJINYOUYASUOKONGQIQIYUANSHI,KECAIYONGZAISHUIPINGGUANDAOMODUANSHEZHIPENCHUIGUANQINGCHUGUANNEIDEJIHUI。

5 YANQILENGQUEQIDEXUANZEJISHEJI

5.1 LENGQUEQIDEXUANZE

BANFENGBIDIANLUHECHANGKOUDIANLUTONGCHANGCAIYONGDAISHICHUCHENQIJINGHUA。ANGUOLVCAIZHIDEYAOQIU,GUOLVQIANBIXUJIANGYANQILENGQUE,WEILEBAYANQIWENDUJIANGDIDAO250℃YIXIA,XUYAOJIEZHULENGQUEQILAILENGQUEYANQIWENDU。

JINNIANLAI,OYIBANCAIYONGKONGQILENGQUEDEUXINGGUANSHILENGQUEFANGSHILAILENGQUEDIANLUYANQI,RUXIBEITIEHEJINCHANG12500kVADEGUITIEDIANLUCAIYONGLEUXINGGUANSHILENGQUEQIJIANGWEN。

5.2 UXINGGUANSHIKONGQILENGQUEQIDESHEJI

UXINGGUANSHIKONGQILENGQUEQISHIYIGAOWENYANQIYULENGKONGQITONGGUOZIRANFUSHEJINXINGREJIAOHUAN,SHIYANQIDADAOJIANGWENDEYIZHONGLENGQUEZHUANGZHI。GAILENGQUEQIZHIZUOJIANDAN,CAOZUOWEIHUFANGBIAN,DANHAOFEIGANGCAIJIAODUO。

(1)GUANSHIKONGQILENGQUEQIDEPAISHUGENJUYANQIZAIGUANNEIDELIUSULAIJUEDING;LENGQUEGUANNEIYANQIDEPINGJUNLIUSUYIBANXUANQUFANWEISHI20~26m/s。JIHEGUANNEIYANQILIUSUYIBANXUANQU10~20m/s,DISUWEIZHENGCHANGTIAOJIAN;GAOSUWEICIHUOTIAOJIAN;

(2)KONGQILENGQUEQIMEIGENGUANDEZHANGDUGENJUCHUANREXISHUSUOJUEDINGDECHUANREMIANJILAIQUEDING;

(3)KONGQILENGQUEQIDEGAODUYOUJIEGOUDEWENDINGXINGQUEDING;OJIAGAODUYIBUGAOYU17mWEIYI;

(4)LENGQUEQIDEGUANJINGXUANQUFANWEIYIBANWEI500~1100mm,BIHOUWEI5mm;

(5)SHEJIKONGQILENGQUEQIDEGUANJIANYINSUSHIZHENGQUEQUEDINGQICHUANREXISHU,YOUYUYINGXIANGCHUANREXISHUDEYINSUHENDUO,RUYANQIDEWENDU、BIRE、DAOREXISHU、GUANBIDE

REZU、GUANBICHENGOUDEREZU、XIUGOUDEREZUDENG,TEBIESHIGUANBISHANGCHENGOUHEXIUGOUDEREZUHENNANZHENGQUEQUEDING,YINCIYINGZAILILUNJISUANDEJICHUSHANG,GENJUXIANGSIDESHE

BEIJIAYIXIUZHENG,YIBANCHUANREXISHUBODONGFANWEISHIk=13.92~20.88W/m2·K。

(6)PINGXINGBINGLIEDELENGQUEGUANSHUYINGJIANGQIZHONGRUOGANLENGQUEGUANDECHUKOUCHUSHEJIDAIYOULIANGWEIQIEDUANFAMENDEJIEGOU,QIZUOYONGSHIBAOZHENGZAIYANQILIANGBIANHUADEQINGKUANGXIA,LENGQUEGUANNEIDEYANQILIUSUJINYUHENGDING,YIFANGZHILENGQUEGUANNEIJIHUIERJIANGDILENGQUEXIAOGUO;

(7)PINGXINGBINGLIEGUANZAILENGQUEQIDEJINCHUKOULIANXIANGSHANGYINGCUOLIESHIBUZHI,YOULIYUTIGAOCHUANREXIAOLV,YOUBIANYUANZHUANGSHIHAN;

(8)DANGLENGQUEQICHULIDEYANWENWEI550℃SHI,LENGQUEQIYINGSHEJICHENGLIANGDUANSHIDE。JIGAOWENDUANYUDIWENDUAN。GAOWENDUANLENGQUEGUANCAILIAOYIXUANYONGCortenGANG,DIWENDUANLENGQUEGUANCAILIAOKEXUANYONGDITANGANG。

6 DAISHICHUCHENQIDESHEJI

根据硅铁粉尘轻且细的特点,如果在风机前加一台预除尘器把粗颗粒粉尘分离出来,风机磨损问题可以解决。国外对硅铁电炉烟气的净化,一般采用压入式的袋式除尘器较多,而O采用吸入式的袋式除尘器较多。

6.1 DUIYUDAXINGDAISHICHUCHENQIDEDANYUANLVSHIDEHUAFEN

JINGJISHUJINGJIFENXI,RENWEIDANYUANLVSHIDAISHUYIBANWEI140~160TIAODAIZIWEIYI。ZHEIYANGKESHICHUCHENQIJIEGOUQINGQIAOHAOGANGLIANGDI,ERQIEYOUBAOZHENGLESHIYIDEFANCHUIFENGLIANG,SHIDAISHICHUCHENQIZAIQINGHUIYUFEIQINGHUIQIBUBIBODONGJIAOXIAO,WENDINGJINGHUAXITONGDEYUNXING,BAOHULVDAI,YANZHANGQISHIYONGSHOUMING。

6.2 DAISHICHUCHENQIDEQINGHUIFANGSHI

MUQIANZAIGUITIEDIANLUYANQIGUOLVZHONGSHIYONGMAICHONGQINGHUIGUOLVQIDEQINGKUANGYUELAIYUEDUO,BEIJINGTIEHEJINCHANGLIANGTAI6000kVADEGUIMENGDIANLUYANQIJINGHUAJUNCAIYONGLEDAXINGDIYAMAICHONGQINGHUICHUCHENQI。QITEDIANSHI:ZHEIZHONGFUYAXIAYUNXINGDEGAOQIBUBIMAICHONGQINGHUIGUOLVQI,GUOLVMIANJIBIDAQIFANCHUIBUDAICHUCHENQISUOXUYAODEGUOLVMIANJIYAOJIANSHAO65~75%,ZHANDIMIANJISHAO,TOUZISHENG。

6.3 LVDAICAIZHI

袋滤式除尘器的工作特性除与除尘器的结构形式有关外,在很大程度上取决于滤布的性质。目前国外使用比较普遍的还是玻璃纤维,允许使用温度可达250~280℃,但玻璃纤维强度较低,允许滤速一般不超过0·5m/min,为了提高玻璃纤维的抗折性,一般要进行硅油和石墨处理,使用这种处理后的除尘布袋,加上合理的反吹制度,布袋的寿命可达5~6a之久。

JINJINIANLAI,OWAIKAIFALEYIZHONGXINXINGCAILIAO,JIZAIBOLIXIANWEIDEJICHUTISHANG,ZAINEICEFULEYICENGWEIKONGDEJUSIFUYIXIBOMO,OYIYOUCHANGJIASHENGCHANZHEIZHONGWEIKONGBOMOFUHELVLIAO,ZHEISHIYIZHONGLIXIANGDEGUOLVCAILIAO。TAJUYOUJUSIFUYIXISUOGUYOUDEXINGNENG,ODEHUAXUEWENDINGXING,BIAOMIANJIQIGUANGHUA,MOCAXISHUDI,NAIGAODIWEN,NAISUANNAIJIANXINGHAO,BUHUILAOHUA,ZHANGJIUNAIYONG,ERQIEZHEIZHONGLVLIAOJUYOUDUOWEIKONGXING,TOUQIXINGHEZENGSHUIXING。TAJUYOUGUOLVXIAOLVGAO,YUNXINGZULIDI,GUOLVSUDUDA,SHIYONGFANWEIGUANG,YUNXINGFEIYONGDI,SHIYONGSHOUMINGZHANGDENGYOUDIAN。

7 FANCHUIZHIDU

布袋的使用寿命除了取决于布袋材质外,反吹制度也有重大影响,对反吹的基本要求是保持除尘布袋在工作转为反吹,或由反吹转为工作时气流平稳,不要使布袋骤涨骤缩,以避免滤袋在状态转化时出现“阵发性”的变形,为达到保护除尘滤袋的目的,挪威埃肯公司的除尘器设计了主风阀和反吹阀以外还加了一个小型充气阀,即当清灰完毕,转入重新工作以前,当布袋还处于收缩状态时打开小型充气阀使袋内外压差为零,然后打开主风阀使布袋重新工作,这样使布袋在缩涨之间有了一个缓冲的时间,有利于延长布袋寿命。

8 FAMENDESHEJIYUYINGYONGWENTI

FUYAFANCHUIBUDAICHUCHENQIZHONGDESANTONGHUANXIANGFATIDAILECHUCHENQIPAIFENGGUANDAOHEFANCHUIGUANDAOFENBIESHEYOUPAIFENGFAHEFANCHUIFENGFA,GAIFAMENNEISHELIANGFABANKEFENBIEGUANBIPAIFENGKOUHEFANCHUIFENGKOU。CIFAZHENGTIMIFENGXINGHAO,DONGZUOLINGHUOKEKAO,ZAITONGYITAICHUCHENQIZHONGFAMENKEJIANSHAOYIBAN,YEJIANSHAOLEKONGZHIDIAN,JIANGDILECHUCHENQIDECHENGBEN。

9 ZHUPAIYANFENGJIKONGZHI

DAXINGGUITIEDIANLUDEYANQIJINGHUAXITONG,QIZHUPAIYANFENGJIDEQUDONGDIANJIRONGLIANGSHIHENDADE,YINCIDUIZHUPAIYANFENGJIDEHELIKONGZHISHIFENZHONGYAO。YIBANDUIQIZHUPAIYANFENGJIKONGZHIYUDIAOJIE,KEXUANYONGYELIOUHEQIDIAOJIEFENGJIZHUANSULAISHIXIANFENGJIJINGJIDEYUNXING。

10 JIESHUYU

JISHUSHANGXIANJIN,JINGJISHANGHELI,CAOZUOSHANGKEXINGSHITIEHEJINDIANLUYANQIJINGHUASHEJIZONGDEYAOQIU,SHEJIZHEXUTUOSHANCHULIYIXIAJIZHONGGUANXI:

(1)TIGAOSHOUYANLVYUJIANXIAOXITONGPAIYANLIANG;

(2)TIGAOSHOUYANLVYUDIANLUCAOZUOJIANXIU;

(3)PAIYANFANGSHIYUXITONGANQUAN;

(4)JINGHUAGONGYISHEJIYUCHANGFANGJIEGOU、CHEJIANBUZHI;

(5)JINGHUAGONGYISHEJIYUJIENENGYAOQIU。

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