EVAPORATION 



349 



(i) The condensed water from each cell flows to the fall pipe'of the con- 

 denser or to the wet air pump. 



The method most to be advised is the separation of the first cell water» 

 all of which is used as boiler feed. The second cell water is also taken away 

 separately, and used as make-up water for boiler feed. The third and fourth 



Fig. 197 



cell waters may be taken away jointly and form a supply for maceration^ 

 filter cake washing, molasses dilution, and general ser^-ice. 



This system does not utilize the economy to be obtained from circulation 

 of the condensed water, but is advantageous in other ways. 



Position of Cells. — Usually the imits are placed on the same level and 

 generally in series. WTiere space is restricted the piled type may be used» 



