The process of absorption of pure carbon dioxide by individual drops of water has been studied. It has been shown that, contrary to the assumption of previous workers, the rate of gas absorption of a drop during the period of formation may be very high, especially when the time of formation is short. This is due to the turbulence produced within the drop by the injection of the supply jet, which reduces the resistance to diffusion at the surface of the drop. The absorption coefficient of drops during formation has been shown to be inversely proportional to a function of the time of formation, and directly proportional to the ‘degree of turbulence,’ a concept which can be expressed in terms of orifice dimensions. The influence of the ‘degree of turbulence’ on the magnitude of the overall absorption coeficients used in chemical engineering computations is discussed.

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The apparatus consists of a cylindrical glass vessel, as shown in Fig. 1, fitted with two sintered-A stoppered filling tube is glass discs, one disc close to the bottom and the other near the top.