Single stage spray drying

Fig. 6.4-8 Typical particle from single stage spray drying with small. .satellites" attached...

In a single-stage spray dryer the process is finished when most of the moisture in the pore space has dried. The agglomerates accumulate in the lower part of the spray-drying chamber and are removed by the suction of a fan driving a dust-collection system. The agglomerates are collected in a cyclone while dust is collected in a wet scrubber. Material-laden scrubber water may be recirculated and mixed with the liquid feed. 

From the process of single-stage horizontal spray dryer in Figure 10.48, it is seen that the dwell time may be too short to let the droplets to dry totally. Hence, to overcome this problem, Mujumdar [65]... 

SO2 is obtained commercially most commonly by the combustion of sulfur, typically by spraying fine droplets of sulfur into a combustion chamber along with dry air (A// —297 kj mol ). Both single- and two-stage combustion... 

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