Abstract
Abstract The aim of this work was determining optimal parameters of the investigated jet-loop reactor by means of the built by authors low cost PIV system. The criterion of optimization was value of flow rate in a draft tube. It was found that flow rate in the draft tube increases with the increase of flow rate in the supplying nozzle, what is caused by increase of outlet velocity of supplying liquid stream. With increase of distance between the nozzle and the upper edge of the draft tube the diameter of the stream with high velocity increases, what causes growth of flow rate of liquid at the outlet. Long draft tube causes disturbance of flow, backward circulation and decrease of flow rate, because of decrease of distance from its lower edge to the bottom of the reactor. As a result, the liquid circulation may be stopped. Liquid circulation is more intensive in wider draft tubes, wider than diameter of flowing out stream. In the case of a narrow draft tube the liquid stream flowing out of the nozzle may flow outside the draft tube wall disturbing circulation.
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