GAS DISSOLVING TANK AND GAS DISSOLVING APPARATUS PROVIDED THEREWITH

摘要

PROBLEM TO BE SOLVED: To provide a gas dissolving tank capable of efficiently mixing a gas with a liquid-phase fluid (liquid) even in the case of low flow rate while suppressing interfusion of large bubbles in a gas-liquid mixed fluid, and to provide a gas dissolving apparatus.SOLUTION: An inflow port 21 can introduce the spiral flow of a liquid-phase fluid in a gas dissolving bath 2, and a contraction stage protruding inward is provided on the inside wall face of the gas dissolving bath 2 over the whole circumference. A gas dissolving tank 1 is composed to induce the flow of the liquid-phase fluid ascending the inside of the gas dissolving bath 2 toward the cylindrical center direction of the bath 2 by the contraction stage.