Abstract The separation process about deoxidizing stove tail gas in the modified siemens arts and crafts in polycrystalline silicon production was improved.Aspen plus software was applied to study the separation process of tail gas through combination of different separation method such as rectification,absorption,adsorption,etc,and the separation sequence of tail gas was fixed on, four flow blue prints under moderate operation conditions was put forward.Temperature-enthalpy diagram was used to analyse every flow blue print furtherly,and found that there was little significance for heat matching of the four flows,but the lowest temperature requirement of the separation process was 250 K,which was easy to be realized.Through comparing flow equipment and parameters such as adding quantity of absorbent,operation pressure of major equipments,public works heating and cooling loads etc,the optimal flow blue prints was confirmed for the separation of tail gas.The flow was characterized by moderate operation condition and better separation effect.
WEN Ya,HU Yang-dong,SHAN Ting-liang.Improvements of Separating Process in Polycrystalline Si Production by Modified Siemens Arts and Crafts[J] Chemcial Industry and Engineering, 2008,V25(2): 154-159
2008, Vol. 25 
