Gas dissolving device

Abstract

The invention provides a gas dissolving device capable of effectively dissolving gas in a liquid to a supersaturated state with a relatively simple structure. The gas dissolving device of the present invention is as follows: equipped with an upright columnar tank (50), a gas-liquid supply device that pressurizes and supplies a gas-liquid mixture formed by mixing gas and liquid into the tank (50), and the tank (50) ) has a nozzle (40) for spraying the gas-liquid mixture toward the bottom surface side of the tank (50) in the upper part of the gas dissolving device, by setting a partition body (60) in the tank (50), a The central flow path (71) of the central axis in the longitudinal direction of (50), the outer flow path (72) along the inner peripheral surface of the tank (50), and the central flow path (71) and the outer flow path (72) ) in the short-side direction of the connecting flow path (73), the gas-liquid mixture sprayed from the nozzle (40) into the tank (50) passes through the central flow path (71), the outer flow path (72) and the connecting flow path ( 73) while being stirred.

Description

technical field [0001] The present invention relates to a gas dissolving device for dissolving gases such as air, oxygen and ozone in liquid. Background technique [0002] As an application example of the gas dissolving device, as disclosed in Patent Document 1, there is known an ozone water manufacturing device that mixes ozone with water to be treated. The apparatus of this patent document 1 is comprised so that the mixed fluid of the water to be treated introduced and ozone may be mixed by the mixing means provided in a housing, and pressurized by the pressurization means. [0003] However, in this device, only about 5% of ozone can be mixed in volume ratio under atmospheric pressure. Therefore, in Patent Document 2, a kind of ozone water treatment device is proposed. The two-phase flow gas-liquid mixing pump that outputs under the output pressure, the outer cylinder that maintains the inside in a closed state, and the inner cylinder that is formed of microtubes with ma...

AI Technical Summary

Problems solved by technology

[0004] However, in the ozone water treatment device of Patent Document 2, air bubbles containing ozone are mechanically crushed and miniaturized by passing them through the micropores of the inner cylinder in a short time of 1 second or more and 3 seconds or less (paragraph 0018). Separately installed a reaction tank (radical reaction tank) for dissolving bubbles containing ozone in the water to be treated

In addition, the bubbles containing ozone and the water to be treated flow upward from the bottom of the gas-liquid contact tube, and because of the structure that is discharged from the upper part, the bubbles containing ozone do not pass through the micropores and float up, and accumulate in the upper part of the gas-liquid contact tube, etc. This may prevent the miniaturization of air bubbles containing ozone and reduce the dissolution efficiency

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