Patent ID: 6344130
Filing Date: 2002-02-05
Classification: B01D,C01B

Abstract:
A method for generating highly concentrated ozone gas which comprises adsorbing ozone gas generated by an ozonizer (8) with an adsorbent (1) within each of a plurality of adsorption columns (2) and supplying only highly concentrated ozone gas obtained by desorbing it from the adsorbent (1) to an ozone gas using installation, whereinan ozone concentrating unit comprises three adsorption columns (2) arranged in parallel with each other and each filled with the adsorbent (1), in this unit each of the adsorption columns (2) being controlled so as to repeat four steps comprising an ozone gas adsorbing step, a stabilizing and pressurizing step, an ozone gas desorbing step and a cooling down step, each of the ozone gas adsorbing step and the ozone gas desorbing step having an operation time set twice the operation time of each of the stabilizing and pressurizing step and the cooling down step, the three adsorption columns (2) composing the ozone concentrating unit being set to operate consecutively by a &frac13; (one third) cycle lag, wherein the desorption step includes increasing the temperature of the adsorption column so as to increase the pressure therein and urging desorption of the ozone gas, said ozone gas only releasing from said absorbent as a result of the increase of temperature and pressure within said adsorption column, and said method includes storing only highly concentrated ozone gas separated at the desorbing step of each adsorption column (2) in an ozone gas storage vessel (30), from which only the highly concentrated ozone gas is supplied to the ozone gas using installation after a flow controller (34) has regulated its flow amount to a constant one.