JPS57183305A - Ozonizer - Google Patents

Abstract

PURPOSE: To raise the efficiency of humidity exchanger and to improve the efficiency of ozone evolution, by subjecting normally humid air with its temperature raised by pressurizing to heat exchange with low-temperature ozonized dried air.

CONSTITUTION: Normally humid air sent under pressure by the compressor or blower 3 is subjected to heat exchange with dried ozonized air in counter flow or in parallel flow by the heat exchanger 11 at about 2 atm. at tens °C, its temperature is lowered, the gas is sent to the column 4a packed with a humidifying agent of the humidity exchanger 2, it is converted into dried air containing a small amount of NO_x, having low dew point, and changed into the ozonized dried air by the ozonizer 1. The ozonized dried air is decompressed byrhe reducing valve 9 into about 1.5W1.0atm., subjected to heat exchange with normally humid air, its temperature is raised, it is humidified while reclaiming the packing column 4b, and converted into ozonized normally humid air. Two or more of the packing columns 4a and 4b in the humidity exchanger 2 are equipped, and humidifying process and reclamining process are repeated alternately by the changes of the three-way valves 2W8.

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