THE CONCENTRATION OF THE SYRUP TO MASSECUITE. 



Now let these molasses be concentrated to a second massecuite at 90 Brix 

 and let one part of water hold in solution two parts of sugar. 



Then the percentage composition of the second massecuite is 



Water 10 



Sugar in solution 20 



Sugar in crystals 27 '367 



Non-sugar 42-633 



100-00 



Now let 27-367 sugar in crystals be removed. Then per 100 sugar 

 originally present there are removed. 

 27-367 



X 27-78 = 16-07 per cent. 



47-367 



and the total amount of sugar removed in the two operations per 100 sugar 

 originally present is 72-22 + 16-07 = 88-29. 



Now to find to what Brix the massecuite must be boiled in one operation 

 BO as to leave the same absolute amount of water in the massecuite, we can 

 proceed as follows. In the second massecuite above the non-sugar is 4-2633 

 times the water and the purity of the original syrup being 80, the sugar in 

 the original massecuite is four times as much as the non-sugar. Let x be the 

 water percentage in the massecuite boiled in one operation so that the absolute 

 amount of water left is the same as that in the two operations above. 

 Then 



x + 4-263^ -f 17-0532* = 100 



*?= 4-482 



The composition of the massecuite boiled to this water content in one 

 operation will be 



Water . . 4'482 



Sugar in solution 8 -964 



Sugar in crystals 67 '450 



Non-sugar 19*104 



and if the 67-450 sugar in crystals be removed, the amount of sugar extracted 

 per 100 sugar in the masse cuite is 



67-450 

 x 100 88-29 per cent, 



the same percentage as was obtained before in two operations. 



Crystallization in Motion.* A complete crystallization in 

 motion or first-sugar and molasses process may be defined as "a scheme in 

 which the purities of massecuites are reduced to such a point that they are 

 capable of practical manipulation when concentrated to that point when the 

 water left is only just sufficient to hold in solution the non-sugar, combined 



*As in other valuable processes there is no one inventor; Bocquin first in 1880 used a 

 crystallizer as now understood ; Wulff in 1884 gave a complete theory. 



355 



