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Annular jets—II: Gas absorption

✍ Scribed by M.H.I. Baird; J.F. Davidson

Publisher
Elsevier Science
Year
1962
Tongue
English
Weight
704 KB
Volume
17
Category
Article
ISSN
0009-2509

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✦ Synopsis

A theoretical equation has been derived for the rate of liquid phase-controlled gas absorp tion by an annular jet. It has been confirmed by measurements of the absorption rate of COs in annular jets of water.

The annular jet has also been used to determine molecular dithrsivities of sparingly soluble gases (Os, Hs;, Na, He, A, CsHs, CaH4) in water. The ditIusivities found in this way are about 80 per cent of those found using a wetted-sphere apparatus. It is tentatively concluded that the apparent lowering of dXusivity in the annular jet is due to an interfacial resistance to the absorption of sparingly soluble . gases. The absorption on the wetted sphere is unaffected by interfacial resistance because of the relatively large diffusional resistance associated with the longer exposure time in this case. The molecular diffusivities as found by the wetted-sphere method agree fairly well with other data.

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