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干法脫硫和濕法脫硫有什么區別?

發表時間:2019-12-25 17:05  來源:本站
濕法脫硫和干法脫硫是目前主要的兩種脫硫方法,它們之間的差異主要體現在以下幾個方面:
 
一、干法煙氣脫硫

 

  

干法煙氣脫硫是指采用粉末或顆粒狀吸收劑、吸附劑或催化劑從煙氣中脫除二氧化硫。具有工藝簡單、無污水和酸處理、能耗低,特別是凈化后煙氣溫度高的優點,有利于煙囪排氣擴散,無“白煙”現象,凈化后的煙氣不需要二次加熱,腐蝕性小;其缺點是脫硫效率低,設備大,投資大,占地面積大,運行技術要求高。主要方法如下:

 

GENJUSUOYONGXIFUJIDEBUTONG,XIFUJIZHUSHEFAKEFENWEIGAIJIHENAJILIANGZHONGGONGYI。XIFUJIKEYISHIGANDE、SHIDEHUOJIANGZHUANGDE,PENSHEWEIZHIKEYISHILUZI、SHENGMEIQIHEYANDAO。DANGGAILIUBIWEI2SHI,GANFATUOLIUXIAOLVWEI50%-70%,GAILIYONGLVWEI50%。ZHEZHONGFANGFAGENGSHIHEYULAODIANCHANGDEGAIZAO,YINWEIZAIDIANCHANGDEPAIQIGUOCHENGZHONG,BUXUYAOTIANJIARENHESHEBEIJIUKEYIDADAOTUOLIUDEMUDE。

 

JIECHUYANGHUAFAYUGONGYESUANSHENGCHANFANGFAXIANGTONG,YIERYANGHUAGUIWEIZAITI,WUYANGHUAERFANHUOLIUSUANJIAWEICUIHUAJI,YANGHUASO2WEISO3。SO3YUSHUIZHENGQIFANYINGSHENGCHENGLIUSUANHUOANSHENGCHENG(NH4)2SO4。ZHEZHONGFANGFASHIYIZHONGGAOWENCAOZUO,XUYAOHENGAODECHENGBEN。DANYOUYUQIJISHUCHENGSHU,ZAIGUONEIWAIGAONONGDUYANQICHULIZHONGDEDAOGUANGFANYINGYONG。

 

安徽快3 GAIFANGFAGONGYIJIANDAN。TALIYONGGAONENGDIANZISHUYUANDEGUANGHUAXUEFANYINGZUOWEIXISHOUJI。YANQIZAIFANYINGQIZHONGZHAOSHEHOU,YANQIFENJIECHANSHENGDALIANGDEQINGYANGHEYANGYUANZI,CUJINYANQIZHONGERYANGHUALIUHEDANYANGHUAWUSHENGCHENGLIUSUANHEXIAOSUAN,ZAIYUANSHUIFANYING,XINGCHENGLIUSUANANHEXIAOSUANANDEHUNHEWU,YONGZUONONGYONGFEILIAO。

 
二、濕法煙氣脫硫

 

 

  

SHIFAYANQITUOLIUSHIZHILIYONGYETIXISHOUJI(RUSHUIHUOJIANXINGRONGYE)QUCHUYANQIZHONGDEERYANGHUALIU。JUYOUTUOLIUXIAOLVGAO、SHEBEIXIAO、TOUZIDI、CAOZUOFANGBIAN、YIKONGZHI、ZHANDIMIANJIXIAODENGYOUDIAN,DANYIZAOCHENGERCIWURAN、FEISHUIHOUCHULIWENTI、NENGHAOGAO,TEBIESHIXIDIHOUYANQIWENDUDI,BULIYUYANCONGPAIQIPENGZHANG,YICHANSHENG“BAIYAN”,XUYAOERCIJIARE,FUSHIYANZHONGDENG,ZHUYAOFANGFARUXIA:

 

安徽快3 SHIHUISHI-SHIGAOFASHILIYONGSHIHUISHI/SHIHUISHIJIANGYEXIDIYANQI,SHIQIYUSO2FANYINGSHENGCHENGYALIUSUANGAI(CaSO3)。FENLIDEYALIUSUANGAIKEYIBEIFEIQI,HUOZHEKEYIQIANGZHIJINRUKONGQIZHONGYANGHUA,BINGQIEKEYITIANJIAYIXIETIANJIAJIYISHIGAOXINGSHIHUISHOU。WEILEJIANGDISO2XIDISHEBEIDEFUHE,SHOUXIANDUIYANQIJINXINGCHUCHEN,RANHOUJINRUCHUCHENSHEBEIYUXISHOUYEFANYING。SHIHUI/SHIHUISHI-SHIGAOFAGONGYIBIJIAOCHENGSHU,XISHOUJILIANJIAYIDE,CAOZUOKEKAO,YINGYONGZUIGUANGFAN,TUOLIUXIAOLVKEDA90%YISHANG。

 

GAIFANGFACAIYONGQINGYANGHUANA、TANSUANNAHUOYALIUSUANNARONGYEZUOWEIXISHOUJI,XISHOUYANQIZHONGDESO2。YOUYUGAIFANGFAXISHOUSO2SUDUKUAI,QIEGUANDAOHESHEBEIBUYIDUSAI,YINCIDEDAOLEGUANGFANDEYINGYONG。GAIXISHOUJIJINGWUHAIHUACHULIHOUKEFEIQIHUOSHIDANGCHULI,DEDAOFUCHANPINNaSO3JINGTI、SHIGAO、LIUSUANDENG。

 

安徽快3 MEIFADEDAIBIAOGONGYIYOUXIDEwilhlm-GrilloGONGSIFAMINGDEJILILUOFAHEMEIGUOHUAGONGJIANSHEGONGSIFAMINGDEKAIMIKEFA。

 

ZAIJILILUOFAGONGYIZHONG,CAIYONGXISHOUXINGNENGHAO、YIYUZAISHENGDEMgxMnOyZUOWEIXISHOUJIXISHOUYANQIZHONGDESO2。GAIFAFUCHANWULIUSUANDENONGDUKEDA98%。KAIMIKEFANGFA,YECHENGWEIYANGHUAMEIFA,CAIYONGLIANGGEWENQIULICHUCHENQICHUANLIAN,YICHUQUYANQIZHONGDEXIAOFENCHENKELI,BINGYONGMgORONGYEXISHOUYANQIZHONGDESO2。JIANGXISHOUGUOCHENGZHONGXINGCHENGDEmgso4.7h2oHEmgso4.6h2oJINGTIYUJIAOTANZAI1000℃XIAJIAREFENJIE,DEDAOSO2HEMgO。ZAISHENGHOUDEYANGHUAMEIKEYIZUOWEIXISHOUJIZAILIYONG。

 

ANFASHIYIANSHUIWEIXISHOUJI,XISHOUYANQIZHONGDEERYANGHUALIU,QIZHONGJIANCHANWUWEIYALIUSUANANHEYALIUSUANQINGAN。CAIYONGBUTONGDEFANGFACHULIZHONGJIANCHANWU,HUISHOULIUSUANAN、SHIGAO、DANTILIUDENGFUCHANWU。

 

GAIFANGFAYITIANRANLINKUANGSHIHEANSHUIWEIYUANLIAO,FUCHANWUWEIYANQITUOLIUGUOCHENGZHONGDELINSUANANFUHEFEI。GONGYILIUCHENGZHUYAOBAOKUOSIGEGONGXU:HUOXINGTANYIJITUOLIUZHIBEIXILIUSUAN;YONGXILIUSUANCUIQULINKUANGZHIBEIXILIUSUANRONGYE;LINSUANHEANZHONGHEYE[(NH4)2HPO4]ERJITUOLIU;NONGSUOGANZAOKUANGJIANGZHIBEILINSUANANFUHEFEI。TUOLIUXIAOLVDA95%YISHANG。


通過以上分析可知,濕法脫硫的主要優點是運行成本低、效率高,但耗水量相對較大。干法脫硫的優化不消耗水資源,但脫硫效率不是很理想。這個要根據具體情況來掌握使用哪種脫硫方法。

 

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