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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烟气冷凝技术

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烟气冷凝再热技术

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