We studied on the crystal growth of dichloromonofluoromethane hydrate when dichloromonofluorometane liquid evaporates contacting with sea water directly in the continuous flow type, propeller stirring vessel.
As the operating conditions such as amount of heat removed from the system, average circulating time of crystals in the vessel and solid content in the slurry being experimental factors, their effects for the average particle size and linear growth rate of crystals which were calculated from particle size distribution was determined.
Results were summerized in the forms of following equations.
D
m=0.18 t
m1/3
D
m=0.17 C1/3 Q-1/3
u=0.2C-2/3 Q2/3;
where D
m: average particle size (mm), t
m: average circulating time (hr), C: solid content in slurry (%), Q: amount of heat removed from the system (kcal/hr l), u: linear growth rate (mm/hr).
They means that the particles having the size required on the separation process was able to produce by selection of operation condition in the crystal formation process.
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