REACTIVE MIXING IN TURBULENT GASES

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Abstract
Conversion of the ozone-nitric oxide reaction was measured along a non-premixed flow reactor. Conversion was less than the homogeneous limit with a single jet mixer, allowing determination of the mean product of the reactant concentration fluctuations. The liquid decay law was measured with a very rapid reaction and was found, within experimental error, to be equal to the normalized mean product of the reactant concentration fluctuation in the reacting gas. The results imply that the mixing decay law can be taken as the same for gases and liquids, and that the reactive-mixing model developed for liquids also applies to gases. Thus the design procedure developed for liquids may also be used in gases. In addition, since the mixing decay law is easily measured in liquids, a gas phase reactor may be conveniently designed by measuring d in a pilot scale reactor with a very rapid liquid phase reaction.