In moving and fluidized beds which were multiple-paddle impellers, measur ements of the city of solids through the feed pipe were earried operating conditions such as air flow rate, rotat of impeller and bed height of solids.
Experimental results obtained in stirred moving were rearranged by applying the flow model of affected by periodical movement of a solids wave near the pipe opening.
In stirred-fluized beds, a new flow model was Prconsidering the change of solids flow velo city rising gas bubbles near the pipe opening On the of the model, the relation between the freq uency diameter of rising bubbles was obtain ed an dvalues of solids flow velocities were correl ated with rating conditions.

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The motion of a thin liquid film on a rota breaking up into ligament-type flow, is investutated mentally and theoretically. The disintegration the liquid film on a rotating disk is applied to ligame disintegration at the edge of the rotating disk. As a result, we can derive the theoretical relation of the ment drop size, which shows good agreement with results of water atomization by Oyama and hiscolleagut.

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An improved calculation method for designing condensers with finned tubes is presented. the calculation by this method, however, do not ceablv from the results of calculation by the method in a previous paper This indicates that culation of fin efficiency by the simplified me thod factory.
Furthermore, the simplified method is applied ing longitudinal and cylindrical finned-tube codensers. The results of calculation by this met good agreement with the experimental results.

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Two experiments were carried out to analyze the nism of mass transfer from discontinu so water surface and dried region coexist. One rode reduction of ferricyanide on at the cathod other was by water evaporation. It was found extent of decrease of mass transfer coefficient was smaller than that of effective area ratio. mass transfer coefficient did not change Prthe fraction of the wetted area, where k⁰ is the sfer coefficient for free surface under the same condition.
These phenomena were well explai ned by the boundary film with linear velocity profile pro of the authors.

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Removal of micro water from acetone to less than 2000ppm by ordinary distillation is an inter problem, because this binary system acetone-water has a gent azeotrope in the region of high acetone After studying various methods, it has been azeotronic distillation using dichloromethane as a azeotroem agent is the most economical And the following physimell properties have been measured for the design of areotrought.

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A new method of determining vapor concentration was developed by means of measurement of differential temperature ΔT between a selected substance (A) as reference and the binary mixture (B) as sample, under the operating pressure in the distillation column.
Assume (dT/dp) A is nearly equal to (dT/dp) B a at a given pressure, then the condensation temperature of B, (T_B) ₀, will be obtained from the exact value of A, (T_A) ₀ and the data of ΔT within a narrow range of pressure change δp.
(T_B) ₀=(T_A) ₀+ΔT
Consequently, without the correction of pressure fluctuation, the concentration of the binary mixture will be obtamed by using the correlation between condensation temperature and concentration.
In several ways, the vapor concentration of MeOH-H₂O system was determined in a distillation column operated under atmospheric pressure The error of concentration by this method compared with the specific gravity method was less than 1mol.% It was found that the new method was comparable to the refractive index method in accuracy and convenience.

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Mass transfer from a single liquid drop to water was studied, using aniline and furfural as the dispersed phase.
Measuring the change of drop volume by dissolution photographically, the continuous phase mass transfer coefficient kc was obtained. The experimental data are successfully explained by Ruckenstein's theory, where the ratio of tangential component of velocity at the interface u0 to terminal velocity U is estimated from the works of Chao and Taylor.

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In this report, the applicability of the modified Karlovitz theory is discussed in explaining the stability limit of bydrocarbon Bunsen flame when the fraction of stoichiometric X is larger than unity, just as in the less-than-unity case studied in the author's previous report In the case of the open rich flame examination, the phenomenon of blow-off is well examined by the following procedure the value of B′, the degree of recombination reaction of the hydrogen atoms, is calculated from the amount of the hydrogen produced by pyrolysis of the excess fuel and is considered as the burning velocity of the stoicluometric fraction of unity. The flame stability of the closed rich flame is found to be affected mainly by the burning velocity, as is that of the lean flame.

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Vapor liquid equilibrium at atmospheric of the system methanol ethanol calcium chloride was observed The dissolved salt concentrations were 16.7, and 23.1wt.% and saturation at room temperature The relative volatility of methanol to ethanol was decreased by salt effect and rever sed when the effect was maximum.

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Mutual solubility curve and tie lines were determined for the system acetic acid+1, 2-dichloroethane+water at 25°C.
For smaller concentration range, the tie-line data were correlated by Hirata plots log x_w/(1-x_w) vs. log y_w/(1-y_w)
where x_w is solute concentration (wt%) in organic phase and y_w is solute concentration (wt in water phase).
For higher concentration range, the data were correlated by author's plots.
logx_w vs.(y_w-x_w)/x_w
and the solute concentration at plait point was obtained from extrapolation of the correlated line.

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The efficiency of Raschig rings of 1/2-in. size as an entrainment elmator has been experimentally determined in a 124mm diameter column and the steam water system. Bed depth from 10 to 40cm and superficial velocity in column from 0.6 to 1.7m/sec were studied as variables.
The results illustrate that about 96% of entrainment was removed by packings of 20cm depth. Bed depth in not so effective in improving removal efficiency of the packed column if bed depth is more than 20cm.

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