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環保石灰窯的環保標準

文章出處:人氣:發表時間:2018/8/15 14:28:02

  老式石灰窯因為煙氣排放不達標,對環境污染嚴重,早已被取締關閉?,F在的全自動環保石灰窯在能完全滿足嚴格的環保標準。國家對石灰窯的具體環保標準如下:

(1)治理工藝及有關要求

石灰窯要使用袋式除塵+雙堿法脫硫工藝具體要求如下:雙堿法脫硫工藝要求:

①脫硫效率大于80%,脫硫塔出口SO2濃度小于200MG

②脫硫塔內部機構包含三級噴淋層和兩級除霧器:

③脫硫塔選擇用碳鋼作為塔體主材,塔體內層采用玻璃鱗片防腐,其他與煙氣接觸部分鋼構均為304以上不銹鋼,噴頭材質為316L不銹鋼;

④脫硫塔出口煙道選用碳鋼作為主材,內層采用玻璃鱗片防腐。

(2)袋式除塵器設備要求:

①除塵效率大于99.9%,除塵器出口煙塵濃度小于30mg/m;

②過濾風速小于1m/min

(3)排放標準

企業在生產過程中產生廢氣經治理后,廢氣排放符合《工業窯爐大氣污染排放標準》(DB41/1066-2015)。So33323≤200mg/m;氮氧化物≤400mg/m;顆粒物≤30mg/m;煙氣黑度≤林格曼黑度Ⅰ級以下;


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