CANE SUGAR. 



Of special designs of crystallizers may be mentioned : 



RagOt and Tournour's. This is shown in Fig. 199. The stirring 

 gear in this pattern is a hollow helical coil through which steam, hot water or 

 cold water can be passed. On one end of the shaft is a hollow shaft b, to 

 which is connected a steam or water distributing box c. The steam or water 

 passes into an annular space in the pipe I, thence by way of a pipe d to the 

 coils, returning through the pipe to the outlet/. 



FIG. 200. 



Hlich Crystallizer. This is shown in section in Fig. WO. It con- 

 sists of a closed cylindrical vessel surmounted by a dome ; in this vessel are 

 arranged the tubular elements aa which may be used as heating or as cooling 

 surfaces ; the path of the stream or water is shown by the arrows ; the stirring 

 device is shown at b. 



REFERENCES IN CHAPTER XVII. 



1. Beet Sugar Manufacture, p. 149. 



2. Bull. 16, Agric. H.S.P.A. 



3. S. C., 309-311. 



4. Sucrerie Beige, July, 1898. 



370 



