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烟气脱白:加热再冷凝工艺

在湿法脱硫工艺中,由于进入湿式脱硫塔的烟气温度较高,其热量会将脱硫浆液中的水分蒸发,湿法脱硫后的湿烟气直接排放之所以会产生“白色烟羽”,是因为在脱硫过程中,进入湿式脱硫塔的烟气温度较高,脱硫浆液与高温烟气直接接触,发生传热传质。一方面水分蒸发,增加烟气的含湿量,随烟气最终排入大气,造成水分的损失;另一方面,烟气温度降低,烟气携带水蒸汽的能力降低。烟气达到饱和状态后,会携带部分小液滴。这些携带小液滴的饱和湿烟气经除雾器除去绝大部分液滴后,如果直径经烟囱排入大气,由于环境温度比烟气温度低,饱和湿烟气中的水分就会凝结成小液滴形成“白色烟羽”。环境温度越低、环境湿度越大、白色烟羽越长。

工作原理:

JISHUGUINAWEI:

1、YANQIJIAREJISHU,DIANXINGDEGGH、REGUANSHIGGH、MGGH、ZHENGQIJIAREQIDENG;

2、YANQILENGNINGJISHU,DIANXINGDEXINJIANPENLINTA、SHUILENGYUAN、KONGQILENGYUANHEQITARENGONGLENGYUAN;

3、YANQILENGNINGZAIREJISHU,LIANGZHONGJISHUZUHEYINGYONG,CONGJINGJIXINGCHUFA,DANCHUNDEJIAREHELENGNINGFANGSHIDOUYOUGEZIDEXIANZHI,JIARESHOUDAOYUANYANQIYANWENTIAOJIANDEXIANZHI,LENGNINGSHOUDAOHUANJINGKONGQI、SHUIWENDUDEXIANZHI。ZAICITIAOJIANXIARUOCAIYONGLENGNINGZAIREJISHU,JIANGJIAREHELENGNINGJIEHEQILAISHIYONG,ZEKEKUODAXITONGSHIYANYUXIAOCHUDUIHUANJINGWENSHIDUDESHIYINGFANWEI。

  • 烟气加热技术

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ZHIJIEJIAREDEJISHUSUIYICITOUZIJIAODI,DANYINQIREYUANBINGFEILIYONGYANQIYURE,YUNXINGFEIYONGTAIGAO,ZUOWEISHIYANYUZHILIDESHOUDUANDAIJIAGUODA,ZAISHIJIYINGYONGDANGZHONGANLIYEJISHAO。JIANJIEJIAREJISHUZHONG,HUIZHUANSHIGGHYUGUANSHIGGHJUNYOUBUTONGCHENGDULOUFENG¨,ZAIZHONGGUORANMEIDIANCHANGCHAODIPAIFANGDEDAHUANJINGTIAOJIANXIA,ZUOWEISHIYANYUZHILISHOUDUAN,QIYINGYONGYESHOUDAOXIANZHI。REGUANSHIGGHDAXINGHUAHOU,JIANGSHICHUIHUIQIBUZHIYOUYIDINGNANDU,QIEJIADALEZHANDIMIANJIYIN,ZAIDAJIZUSHANGZANWUYINGYONG。ZHENGQIJIAREDEFANGSHITONGYANGYINREYUANWENTINENGHAOGUOGAO。YINCI,JIEHESHIXIAYANQICHAODIPAIFANGJIJIENENGDEYAOQIU,MGGHRUOZUOWEISHIYANYUZHILIDESHOUDUANZHIYI,JUYOUZUIGUANGKUODEYINGYONGQIANJING。

  • 烟气冷凝技术

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GENJULENGYUANDEBUTONGLENGNINGJISHUYOUFENWEI:SHUILENGYUAN、KONGQILENGYUANHEQITARENGONGLENGYUAN。QIZHONGSHUILENGYUANSUOGOUCHENGDEXUNHUANSHUIXITONGZUIWEIJIANDAN,JINPEIZHIBENGHEXUNHUANGUANLU,TONGCHANGSHIKAISHIXUNHUAN。YUNXINGFEIYONGZUIDI、ZHANDIXIAO。CAIYONGKONGQILENGYUANDEXITONGTONGCHANGXUNHUANSHUIXITONGZHONGXUPEIZHILENGQUETA,XITONGJIAOSHUILENGYAOFUZA、ZHANDIDA,XINZENGDELENGQUETAHUIZAIKAOJINDIMIANCHENGWEIXINDEBAIYANSHENGCHENGYUAN。QITARENGONGLENGYUAN,RUREBENG,ZHANDIMIANJIDA,NENGHAOGAO(YIZHENGQIXIUHUALIREBENGWEILI,MEIJIAOHUAN1MJRELIANGXUYAOXIAOHAO0.7MJZHENGQI)。YIHUANJINGKONGQI、JIANGHEHAISHUIZUOWEILENGYUANDEXITONG,QILENGYUANDEPINZHISHOUJIJIEYINGXIANGJIAOWEIMINGXIAN,YIHUADONGDIQUWEILI,DONGJIHEXIAJIHUANJINGWENDUXIANGCHA20—30DU,YINCITONGYITAOXITONGBUTONGJIJIEDELENGNINGXIAOGUOHUIYOUJIAODACHABIE。

YANQILENGNINGJISHUDUITUOLIUHOUSHIYANQILENGQUE,SHIDEYANQIZHONGDALIANGDEQITAISHUILENGNINGWEIYEDI,ZAICIGUOCHENGZHONGNENGGOUBUZHUOWEIXIKELIWU、SODENGDUOZHONGWURANWU。YINCI,YANQILENGNINGJISHUZUOWEISHIYANYUZHILIDESHOUDUAN,BUJINNENGGOUDUIBAIYANXIAOCHUYOULIANGHAOXIAOGUO,HAIKEYISHIXIANYANQIDUOWURANWULIANHETUOCHU,LENGNINGSHUIKEZUOWEITUOLIUBUSHUISHIYONG。

  • 烟气冷凝再热技术

YANQILENGNINGZAIREJISHUSHIQIANSHULIANGZHONGFANGSHIZUHESHIYONG。SHIYANYUDEXIAOSANJILIXIANSHI,HUANJINGSHIDU、HUANJINGWENDUDUISHIYANYUDEXINGCHENGJIGUIMOYOUJIAODAYINGXIANG。LILUNSHANG,ZAIJIDINGDEHUANJINGWENSHIDUTIAOJIANXIA,RUOBUJIDAIJIA,JIAREJISHUHELENGNINGJISHUDOUNENGSHIXIANSHIYANYUDEXIAOCHU(JIAREWENDUZUGOUGAO,LENGNINGWENDUZUGOUDI),DANGENJURANMEIDIANCHANGDESHIJIQINGKUANG,CONGJINGJIXINGCHUFA,DANCHUNDEJIAREHELENGNINGFANGSHIDOUYOUGEZIDEXIANZHI,JIARESHOUDAOYUANYANQIYANWENTIAOJIANDEXIANZHI,LENGNINGSHOUDAOHUANJINGKONGQI、SHUIWENDUDEXIANZHI。ZAICITIAOJIANXIARUOCAIYONGLENGNINGZAIREJISHU,JIANGJIAREHELENGNINGJIEHEQILAISHIYONG,ZEKEKUODAXITONGSHIYANYUXIAOCHUDUIHUANJINGWENSHIDUDESHIYINGFANWEI。

JIANGWENZAIREJISHUDUIHUANJINGTIAOJIANDESHIYONGFANWEIYUANDAYUDANCHUNDEJIAREJISHUHELENGNINGJISHUDESHIYONGFANWEI。DANGHUANJINGXIANGDUISHIDU80%SHI,JIAREJISHUNENGZAIHUANJINGWENDUDAYU15℃SHIXIAOCHUSHIYANYU;JIANGWENJISHUNENGZAIHUANJINGWENDUDAYU9℃SHIXIAOCHUSHIYANYU;LENGNINGZAIREJISHUNENGZAIHUANJINGWENDUDAYU-6.5℃SHIXIAOCHUSHIYANYU。

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