No abstract

No abstract

No abstract

No abstract

The eftect of the turbulent gas jet on the reaction characteristics in gas blowing was investigated by the simultaneous measurements of gas/liquid interfacial area and gas holdup. Gas/Iiquid interfacial area was measuredby KOHIC02 model system on the fast pseudo first-order reaction, and gas holdup was measuredby using the electrical conductivity method. By estimating the mean diameter of bubbles from the measureddata of gas/liquid interfacial area and gas holdup, in the gas/Iiquid two phase region, the jet etfect on the improvementof the reactivity was investigated.Both the specific interfacial area and the gas holdup were increased as the aspect ratio decreased. The variations were larger in a high gas flow rate and in a small nozzle diameter. The eftect of nozzle diameter was larger in a low aspect ratio.The calculated mean diameter of bubbles was slightly increased with the increase of the nozzle diameter and the aspect ratio. The result showsthat the increase in the reacting interfacial area according to the development of jet was mainly affected by the increase of gas holdup through being dense of bubble swarms in the jet.