In this paper which deals with the atomization of water droplets, we present the data, concerning the relationship between the trajectory of droplets and operating factors. The apparatus used here were the same that had been used in the experiments describeo in our previous paper. The measuring method of trajectories were illustrated in Fig. 1.
(1) It was observed that the avarage drop sizes tended to give larger values when they were measured at the outer periphery of spray trajectories than those measured in a whole.
(2) By tracing the outer side of spray trajectories, we measured the maximum falling distance from the spinning axis.
Experimental formula is expressed as follows:
The only point to be noted here is that, this equation cannot apply to the condition when the value of (q/ND³) is smaller than 7×10^-4. It, however, will be fair to assume the condition (q/ND³)<7×10^-4 will hold in paractical operation.
(3) Comparisons were made with the values calculated by Shepherd-Lapple equation, on the assumption that the principal drop size was average size and the initial velocity the peripheral speed.
0.6; N 1000rev/min
1.0; N 3000rev/min
2.0; N 9000rev/min
In the above equation;
D: Diameter of disc [cm]
L₀: Disk speed [rev/min]
q: Feed rate of water [cc/sec]

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Prussic acid was prepared by the catalytic reaction, using a methane-ammonia-air mixture. When platinum catalyst was used, the ratio of the yield prepared to ammonia consumed was found to be approximately 50 to 100per cent, according to the experiments.

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In the case of bubbling desorption, we find experimentally that (1) there exists a maximum value in the degree of super-saturation, (2) the surface area of bubbles is proportional to the concentration difference and inversely proportional to the vessel pressure, and (3) number of bubbles formed is proportional to the liquid concentration and to a certain exponential function of the concentration difference.
In the case of spray desorption, (4) the final liquid concentration reaches to less than 1.5 times of the equilibrium concentration and (5) the influence of the initial vessel pressure to the final liquid concentration is not so large, when the initial liquid concentrations are equal.

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[in Japanese]

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