Application of high concentration SO_2 conversion technology
HU Shengjie;JinGuan Copper Branch,Tongling Nonferrous Metals Group Co.,Ltd.;
The application of high concentration SO_2 conversion technology in copper smelter flue gas acid production are mainly introduced.Through continuous improvement,the conversion rate can reach over 99. 92% when the concentration of SO_2 in the flue gasφ( SO_2) is 15%-16%.The SO_2 concentration at the outlet of the second absorption tower can be maintained steadily below 0. 014%.The control parameters under the operating conditions when the concentration of SO_2 in the flue gas is 17% have been successfully explored.The conversion unit has been put into operation for more than 5 years and the power consumption is 68 k Wh/t.