| 摘要 |
PROBLEM TO BE SOLVED: To keep a supersaturated state even after pressure is released to restrain the degassing of ozone and to feed a solvent having a lot of dissolved ozone by mixing gaseous ozone with the solvent to pressurize the mixture to dissolve ozone and then passing the mixture through narrow paths in a laminar flow. SOLUTION: An ozone dissolving device is constituted of: an ozone feeder 1 for feeding gaseous ozone; a solvent feeder 2 for feeding a solvent; a mixer 3 for mixing the gaseous ozone and the solvent; a pump 4 for pressurizing and sending the solvent mixed with the gaseous ozone; and a narrow path device 5 consisting of a lot of narrow paths. Further, a pipe line may be provided with a gas vent 16 for removing the undissolved excess gas. The narrow path device 5 is an assembly of narrow flow passages through which the solvent with dissolved ozone is passed. In the meantime, the solvent which is pressurized by the pump to increase its solubility of gaseous ozone is passed through the narrow paths in a laminar flow and pressure thereof is lowered to make it in a low pressure area, for example, at atmospheric pressure. In this way, the solvent keeps the supersaturated state without degassing the dissolved gas to keep the dissolved quantity of gas in a high level.
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