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Introduction to Yunnan Copper's No.4 sulphuric acid plant

XIAO Wen kang, GUO Xiao bo (Yunnan Copper Co , Ltd , Kunming,Yunnan,,650102, China)  
The process, main equipment and operation of Yunan Copper's No 4 sulphuric acid plant are described The plant adopts a technology of ⅤⅣⅠ-ⅢⅡ"3+2" When the off gas contains a SO 2 concentration of 5vol%, the plant can operate auto thermally with a SO 2 conversion of 99 2% At the lower concentration, the plant is switched to single absorption configureation with a SO 2 conversion of 98 7%
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