J. Sugi, S. Saito
1967
Citations
0
Influential Citations
21
Citations
Journal
Desalination
Abstract
Abstract The authors reached the conclusion that dichlorofluoromethane (R-21) was the most profitable hydrating agent for the concentration and demineralization of sea water after examining its hydrating conditions, growth rate of crystals, etc., and conducting studies in which it was put to practical use. The metastable area was found to be in a super-cooled area within 100 mm Hg of the hydrating line. In the steady state of a crystallizer, the relation lognr= logn0-kr was found to exist between the diameter r of a particle and the number nr of particles having a diameter of r. The authors further obtained the relations r = 470L 1 3 Q- 1 3 and dr/dt = 160 Q 2 3 L- 2 3 , where Q = amount of heat removed (in Kcal/hr. 1) and L = slurry concentration. The hydrate R-21 has a particle size large enough to allow continuous separation of its crystals from salt water by means of a 0.5 mm slit. The R-21 hydrate, recovered by circulating air through produced water, could be reused in the system by dissolving it in feed sea water. The authors are carrying out studies on other phases of this process, and necessary technical data are being accumulated for putting the R-21 hydrate to practical use.