Degremont

Laboratories Goemar S.a.

Christian Coste

Jean-Claude Yvin

Maurice Pare

Maurice Adatto

Method and system for the treatment of seeds and bulbs with ozone

A process and apparatus for the recovery of energy from an ozone production unit including an ozone generator supplied with gas from pretreatment units and using ozone produced thereby to treat water. Heat released from the pretreatment units and the ozone generator is collected by a first fluid circulating in a first closed fluid circuit. The first fluid is passed in heat exchange relationship with a second closed fluid circuit having a second fluid. The second fluid is also passed in heat exchange relationship with a third closed fluid circulating circuit having a third fluid. The ozone produced by the ozone generator is used to treat water in a water treatment facility. Any residual ozone being transferred to an ozone destroying reactor which employs the third fluid as a heat exchange medium for destroying the residual ozone.

Process and apparatus for the recovery of energy from an ozone

A power supply for an ozone generator utilizes a magnetic-leakage type step-up transformer in series with a saturable core inductor which are connected in series across a low voltage AC source. The secondary of the transformer is connected to the ozone generator and the inductor has a control winding which is connected to a continuous (i.e. DC) current source whose value controls the inductance of the inductor. Since the voltage of the low voltage AC source is divided between the inductor and the transformer, the DC current effectively controls the magnitude of the voltage across the transformer primary and thereby controls the high AC voltage supplied to the ozone generator.

Power supply for ozone generator

An outer tubular electrode is adapted to be connected to a first terminal of a high voltage AC source. A dielectric tube is positioned within the outer tubular electrode and is spaced therefrom to form a discharge gap. The dielectric tube has a closed first end and an open second end. An electrically conductive layer, for example of metal, covers the major portion of the inner surface of the dielectric tube. An electrically conductive cap, for example of metal, includes a partial spherical portion, a conical portion and a cylindrical portion. The cylindrical portion is in contact with the electrically conductive layer adjacent the open second end of the dielectric tube. The partial spherical portion of the cap has a concave surface which faces the interior of the dielectric tube. The partial spherical portion is connected to a second terminal of the high voltage AC source, such that the cap and the layer form an inner electrode. When a voltage is applied between the inner and outer electrodes, an oxygen containing gas which is circulated through the discharge gap is transformed into ozone by silent discharge.

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Versailles, France

Christian Coste