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燒結脫硫脫硝工程案例

發布日期:2018-05-25 瀏覽次數:4449

1.唐山松汀鋼鐵有限公司

公司簡介

  唐山松汀鋼鐵有限公司始建1969年,是于2001年對原唐山市鋼鐵廠(唐山市屬中一型企業)整體買斷而組建的民營企業。傳承三十年豐厚的人文底蘊,融合全新的管理機制,公司現已發展成集燒結、制氧、煉鐵、煉鋼、中寬帶為一體,具有年產鋼320萬噸、中寬帶80萬噸生產能力的河北省地方重點鋼鐵骨干企業。

工程概況

隨著環保排放標準越來越嚴,國家治理污染的力度不斷加大,燒結機煙氣排放標準已經修訂完成,為減少燒結機煙氣中SO2和NOx等有害物質排放,滿足環保要求,更好地改善大氣環境質量,唐山松汀鋼鐵有限公司為該公司年產198m2燒結機建了一套燒結機煙氣脫硝裝置,凈化工藝采用GGH+中低溫SCR脫硝+GGH技術。

工藝流程圖如下:



2.河北安豐鋼鐵有限公司

安豐燒結機煙氣脫硫脫硝工程概況

  為減少工業廢氣排放,更好地改善大氣環境質量,河北安豐鋼鐵有限公司為該公司年產2×180m2燒結機建了二套燒結機煙氣脫硫脫硝裝置,凈化工藝采用CFB半干法脫硫除塵+中高溫SCR脫硝技術。

  河北安豐鋼鐵有限公司燒結機煙氣首先經過電除塵,進入CFB半干法脫硫工藝,脫除煙氣中二氧化硫及顆粒物,然后經中高溫SCR脫硝工藝,脫除煙氣中的氮氧化物。該公司單臺180m2燒結機煙工況氣量為100×104 m3/h,煙氣溫度為100~110℃,NOx為300 mg/Nm3,SO2濃度為最大1000mg/Nm3,粉塵濃度為50mg/Nm3。通過脫硫脫硝工藝凈化后煙氣排放濃度達到顆粒物≤10 mg/Nm3,NOx≤50 mg/Nm3,SO2濃度為≤30mg/Nm3,。滿足《燒結球團工業大氣污染物排放標準》 (GB28662-2012修改單) 中的特別排放限值要求。


3.秦皇島宏興鋼鐵有限公司

宏興燒結機煙氣脫硫脫硝工程概況

  為更好的保護環境,改善空氣質量,秦皇島宏興鋼鐵有限公司為該公司180m2燒結機建了一套燒結機煙氣脫硫脫硝裝置,凈化工藝采用SDA半干法脫硫除塵+中低溫SCR脫硝技術。秦皇島宏興鋼鐵有限公司燒結機煙氣首先經過電除塵,進入SDA半干法脫硫工藝,脫除煙氣中二氧化硫及顆粒物,然后經中低溫SCR脫硝工藝,脫除煙氣中的氮氧化物。該公司燒結機煙工況氣量為78×104 m3/h,煙氣溫度為100~200℃,NOx為280-330 mg/Nm3,SO2濃度為最大1500mg/Nm3,粉塵濃度為60mg/Nm3。

  通過脫硝工藝凈化后煙氣排放濃度達到顆粒物10 mg/Nm3NOx≤50 mg/Nm3,SO2濃度為≤35mg/Nm3,。滿足《燒結球團工業大氣污染物排放標準》 (GB28662-2012修改單) 中的特別排放限值要求。


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