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Ozone synthesis under barrier discharge at high and low concentrations

Petryk J., Jodzis S., Zarębski W.

Polish Journal of Chemical Technology

2002

Vol. 4, nr 2

28-32

The influence of discharge parameters on the obtained ozone concentration has been analysed by means of a simple model of synthesis under silent discharge conditions. The overall rate of ozone synthesis decreases with an increase in the ozone concentration. The maximum content of ozone is obtained when in specified conditions the rate of the reaction, in which ozone is formed will be equal with that of the reactions causing its decomposition. It has been found that for the model assumed, the temperature is the main parameter which influences the maximum ozone concentrations. The calculation models are often simplified, with omitting the endothermic effect of the ozone synthesis and without taking into account the rise in average molar specific heat of a gas mixture resulting from the presence of ozone in it besides oxygen. Calculations taking into account and then omitting the above parameters were carried out. It appears that their influence is insignificant, so the simplification of the model does not cause a significant error. This especially refers to the synthesis at low concentrations of ozone. Many times it has been experimentally found that at low ozone concentrations the better process efficiency, i.e. a little higher ozone concentration is obtained when the synthesis proceeds at a higher temperature (with maintaining the other experiment conditions invariable). This anomaly has been explained on the basis of experimental results and calculations using a simple model of the process. model of synthesis under silent discharge conditions. The overall rate of ozone synthesis decreases with an increase in the ozone concentration. The maximum content of ozone is obtained when in specified conditions the rate of the reaction, in which ozone is formed will be equal with that of the reactions causing its decomposition. It has been found that for the model assumed, the temperature is the main parameter which influences the maximum ozone concentrations. The calculation models are often simplified, with omitting the endothermic effect of the ozone synthesis and without taking into account the rise in average molar specific heat of a gas mixture resulting from the presence of ozone in it besides oxygen. Calculations taking into account and then omitting the above parameters were carried out. It appears that their influence is insignificant, so the simplification of the model does not cause a significant error. This especially refers to the synthesis at low concentrations of ozone. Many times it has been experimentally found that at low ozone concentrations the better process efficiency, i.e. a little higher ozone concentration is obtained when the synthesis proceeds at a higher temperature (with maintaining the other experiment conditions invariable). This anomaly has been explained on the basis of experimental results and calculations using a simple model of the process.

O zabezpieczaniu trwałości stalowych konstrukcji oraz fundamentów linii elektroenergetycznych

Zarębski W.

Energetyka

2001

nr 11

672-676