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    濕法煙氣脫硫技術:優點:濕法煙氣脫硫技術為氣液反應,反應速度快,脫硫效率高,技術成熟,適用麵廣。缺點:生成物是液體或淤渣,較難處理,設備腐蝕性嚴重;洗滌後煙氣需再熱,能耗高;占地麵積大,投資和運行費用高;係統複雜、設備龐大、耗水量大、一次性投資高,一般適用於大型電廠。常用的濕法煙氣脫硫技術有石灰石-石膏法、間接的石灰石-石膏法、檸檬吸收法等。幹法煙氣脫硫技術:優點:幹法煙氣脫硫技術為氣同反應,相對於濕法脫硫係統來說,設備簡單,占地麵積小、投資和運行費用較低、操作方便、能耗低、生成物便於處置、無汙水處理係統等。缺點:反應速度慢,脫硫率低,的可達60-80%。此外,吸收劑利用率低,磨損、結垢現象比較嚴重,在設備維護方麵難度較大,設備運行的穩定性、可靠性不高。分類:常用的幹法煙氣脫硫技術有**碳吸附法、電子束輻射法、荷電幹式吸收劑噴射法、金屬氧化物脫硫法等。

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