| 摘要 |
<p>PURPOSE:To increase a dissolved gas concn. by making gas flow at the slightly down stream side of a throttling part to form gas-liq. mixed stream, forming a nozzle part at a down stream of this flow passage, thereby increasing the pressure in the flow passage at an upper side of the nozzle and jetting the gas into a liq. to be treated to which the gas is dissolved through the nozzle part. CONSTITUTION:After gas is allowed to flow in a flow of liq. from a negative pressure part 17 at the slightly down stream side of the throttling part such as throat part 12 of a Venturi tube, the flowing gas is pressurized and dissolved at a mixing part 20 where the flow becomes slow and static pressure increases, and the liq. to which this gas is dissolved is sprayed from a nozzle part 24 at an outlet to the liq. 26 to be treated to increase dissolved gas concn. in the liq. 26 to be treated. The gas is dissolved up to a saturated state at the mixing part 20, and gaseous mixture stream is diluted with the liq. 26 to be treated at the down stream side of the nozzle part 24, thereby gas concn. is reduced by a refluxed liq. and the gas separated and dissipated as bubbles from a supersaturated state is reduced and a dissolving efficiency of the gas is increased.</p> |
