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1
Content available remote Synteza i rozkład ozonu w warunkach wyładowania barierowego w tlenie
Jodzis S.
Przemysł Chemiczny
|
2016
|
T. 95, nr 2
219--222
PL
Wykazano, że bezpośrednią przyczyną rozkładu ozonu podczas wytwarzania go metodą elektroplazmową jest energia dostarczana do kanałów mikrowyładowań, a więc energia przeznaczona na jego wytworzenie. W zakresie typowych czasów przebywania gazu w ozonatorze rozkład ozonu spowodowany wysoką temperaturą cieczy chłodzącej, a w związku z tym także podwyższoną temperaturą gazu w szczelinie, ma charakter marginalny. Pokazano, że nawet stężony ozon praktycznie nie ulega rozkładowi dopóki nie zachodzą wyładowania.
EN
O2 was converted to O3 in electroplasma at residence time 2.5 s and O3 concn. up to 200 g/m3 to study the reactions of O3 formation and decompn. The gas temp. did not play any substantial role.
2
Content available remote Zastosowanie elektrody siatkowej do syntezy ozonu w wyładowaniu stabilizowanym barierą dielektryczną
Jodzis S.
Przemysł Chemiczny
|
2011
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T. 90, nr 10
1904-1908
3
Content available remote Application of a concentric actuator for ozone synthesis under surface discharge conditions
Jodzis S., Sówka P.
Przegląd Elektrotechniczny
|
2011
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R. 87, nr 6
223-226
EN
The results of studies on the ozone synthesis under discharges generated on the surface of the ceramic actuator built as the concentric strips electrode system are presented. Experiments were carried out in pure oxygen, using the high voltage push-pull inverter. The ozonizer, in which the gas flows with variable linear velocity was used. The ozone concentrations and the process energy efficiency show the possibility of effective ozone generation in the reactors with non-conventionally organized discharge space. (
PL
Przedstawiono wyniki badań nad syntezą ozonu w wyładowaniach powierzchniowych, wytwarzanych na powierzchni ceramicznego elementu wyładowczego (actuatora). Elektroda wysokonapięciowa actuatora składała się z zespołu koncentrycznych ścieżek przewodzących. Eksperymenty prowadzono w czystym tlenie przy użyciu zasilacza typu push-pull. Używano ozonatora, przez który gaz płynął z wymuszaną, stale rosnącą prędkością liniową. Uzyskane stężenia ozonu oraz wydajności energetyczne procesu wskazują na możliwość efektywnego wytwarzania ozonu w reaktorach o niekonwencjonalnie zorganizowanej przestrzeni reakcyjnej.
4
Content available remote Ozone synthesis under pulse discharge conditions
Jodzis S., Kowalskia A.
Przegląd Elektrotechniczny
|
2009
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R. 85, nr 5
118-121
EN
Preliminary studies on efficiency of ozone synthesis under bipolar pulse discharge conditions were carried out. Ozone synthesis from pure oxygen limited the number of process parameters. Selected results of these studies are presented.
PL
Przeprowadzono wstępne badania nad efektywnością elektroplazmowej syntezy ozonu prowadzonej przy zasilaniu impulsowym o naprzemiennej polaryzacji. Przedstawiono wybrane wyniki prac prowadzonych w tlenie, co umożliwiło ograniczenie liczby parametrów wpływających na bieg procesu
5
Ozone synthesis under surface discharge conditions
Jodzis S., Petryk J.
Polish Journal of Applied Chemistry
|
2005
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Vol. 49, nr 1-2
53-60
EN
Experiments concerning the applying of dielectric-metal mesh system in ozone synthesis process were carried out. The mixed surface-glow discharge was obtained. It was found that Teflon is especially interesting as a dielectric material although its life-time in conditions of ozone synthesis process is not long. Well developed discharge on Teflon surface was obtained. High ozone concentration was obtained.
6
Irreversibility and thermodynamic non-equilibrium of ozone synthesis in a phenomenological frame
Ozonek J., Fijalkowski S.
Polish Journal of Applied Chemistry
|
2005
|
Vol. 49, nr 1-2
131-138
EN
The paper presents results of considerations over irreversibility and a non-equilibrium character of phenomena that accompany ozone synthesis in silent discharges performed in real conditions. Thermodynamic and process driving forces of the main phenomena have been analyzed as well as their effect on quantities that are characteristic for the basic process course and also primary and secondary phenomena at the ozone generation process have been indicated.
7
Evaluation of electric parameters characteristics for plasmachemical reactors used in environmental protection
Jahołkowski K., Ozonek J.
Polish Journal of Applied Chemistry
|
2005
|
Vol. 49, nr 1-2
123-130
EN
The ozone synthesis process carried out in the presence of conducting packing placed in a discharge gap is presented. The usage of electric energy in the course of the ozone synthesis process depending on the parameters of electric energy power, with a variable inlet gas flow rate has been analyzed.
8
Content available remote Ozone synthesis under silent discharge conditions in the presence of a silica packing
Jodzis S.
Polish Journal of Chemical Technology
|
2002
|
Vol. 4, nr 2
12-16
EN
The ozone synthesis process in the presence of fine-grained silica packing inside the discharge gap was studied. Experiments in both oxygen and oxygen-nitrogen mixtures were carried up. The some effects accompanying the presence of dielectric packing in the discharge gap were considered. The high ozone concentrations in air in the presence of silica packing even at relatively high temperature of the cooling liquid were obtained.
9
Content available remote Ozone synthesis under barrier discharge at high and low concentrations
Petryk J., Jodzis S., Zarębski W.
Polish Journal of Chemical Technology
|
2002
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Vol. 4, nr 2
28-32
EN
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.
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