Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage
The influence of combined supply voltage parameters (bias voltage and voltage pulse amplitude) on efficiency of ozone synthesis in the negative pulsed corona discharge in oxygen was obtained. Pulse overvoltage led to intensification of discharge processes. Bias voltage applied during the discharge c...
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2021
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| Цитувати: | Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage / V.I. Golota, B.B. Kadolin, I.A. Paschenko // Problems of atomic science and tecnology. — 2021. — № 1. — С. 74-77. — Бібліогр.: 4 назв. — англ. |
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Golota, V.I. Kadolin, B.B. Paschenko, I.A. 2023-11-29T10:43:46Z 2023-11-29T10:43:46Z 2021 Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage / V.I. Golota, B.B. Kadolin, I.A. Paschenko // Problems of atomic science and tecnology. — 2021. — № 1. — С. 74-77. — Бібліогр.: 4 назв. — англ. 1562-6016 PACS: 52.75.-d, 52.77.-j, 52.80.Hc, 82.33.Xj https://nasplib.isofts.kiev.ua/handle/123456789/194735 The influence of combined supply voltage parameters (bias voltage and voltage pulse amplitude) on efficiency of ozone synthesis in the negative pulsed corona discharge in oxygen was obtained. Pulse overvoltage led to intensification of discharge processes. Bias voltage applied during the discharge channel relaxation essentially increased the efficiency of ozone synthesis. It was established that the “optimal” bias voltage which provides maximum ozone generation doesn’t depend on voltage pulse amplitude, but depends on input oxygen concentration and generated ozone concentration. Виявлено вплив параметрів комбінованого живлення (напруги зміщення і амплітуди імпульсу) на ефективність синтезу озону у від’ємній імпульсній короні в кисні. Перенапруга під час імпульсу живлення вела до інтенсифікації розрядних процесів. Напруга зміщення, прикладена під час релаксації розрядного каналу, значно підвищувала ефективність синтезу озону. Має місце “оптимальна” напруга зміщення, яка забезпечує максимальний вихід озону і не залежить від амплітуди імпульсу напруги, але залежить від концентрації кисню та генерованої концентрації озону. Обнаружено влияние параметров комбинированного питания (напряжения смещения и амплитуды импульса) на эффективность синтеза озона в отрицательной импульсной короне в кислороде. Перенапряжение во время импульса питания приводило к усилению разрядных процессов. Напряжение смещения, приложенное во время релаксации разрядного канала, существенно увеличивало эффективность синтеза озона. Имеет место “оптимальное” напряжение смещения, обеспечивающее максимальный выход озона, которое не зависит от амплитуды импульса напряжения, но зависит от концентрации кислорода и генерируемой концентрации озона. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Low temperature plasma and plasma technologies Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage Дослідження синтезу озону у від’ємній імпульсній короні в кисні при комбінованому живленні Исследование синтеза озона в отрицательной импульсной короне в кислороде при комбинированном питании Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage |
| spellingShingle |
Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage Golota, V.I. Kadolin, B.B. Paschenko, I.A. Low temperature plasma and plasma technologies |
| title_short |
Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage |
| title_full |
Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage |
| title_fullStr |
Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage |
| title_full_unstemmed |
Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage |
| title_sort |
investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage |
| author |
Golota, V.I. Kadolin, B.B. Paschenko, I.A. |
| author_facet |
Golota, V.I. Kadolin, B.B. Paschenko, I.A. |
| topic |
Low temperature plasma and plasma technologies |
| topic_facet |
Low temperature plasma and plasma technologies |
| publishDate |
2021 |
| language |
English |
| container_title |
Вопросы атомной науки и техники |
| publisher |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| format |
Article |
| title_alt |
Дослідження синтезу озону у від’ємній імпульсній короні в кисні при комбінованому живленні Исследование синтеза озона в отрицательной импульсной короне в кислороде при комбинированном питании |
| description |
The influence of combined supply voltage parameters (bias voltage and voltage pulse amplitude) on efficiency of ozone synthesis in the negative pulsed corona discharge in oxygen was obtained. Pulse overvoltage led to intensification of discharge processes. Bias voltage applied during the discharge channel relaxation essentially increased the efficiency of ozone synthesis. It was established that the “optimal” bias voltage which provides maximum ozone generation doesn’t depend on voltage pulse amplitude, but depends on input oxygen concentration and generated ozone concentration.
Виявлено вплив параметрів комбінованого живлення (напруги зміщення і амплітуди імпульсу) на ефективність синтезу озону у від’ємній імпульсній короні в кисні. Перенапруга під час імпульсу живлення вела до інтенсифікації розрядних процесів. Напруга зміщення, прикладена під час релаксації розрядного каналу, значно підвищувала ефективність синтезу озону. Має місце “оптимальна” напруга зміщення, яка забезпечує максимальний вихід озону і не залежить від амплітуди імпульсу напруги, але залежить від концентрації кисню та генерованої концентрації озону.
Обнаружено влияние параметров комбинированного питания (напряжения смещения и амплитуды импульса) на эффективность синтеза озона в отрицательной импульсной короне в кислороде. Перенапряжение во время импульса питания приводило к усилению разрядных процессов. Напряжение смещения, приложенное во время релаксации разрядного канала, существенно увеличивало эффективность синтеза озона. Имеет место “оптимальное” напряжение смещения, обеспечивающее максимальный выход озона, которое не зависит от амплитуды импульса напряжения, но зависит от концентрации кислорода и генерируемой концентрации озона.
|
| issn |
1562-6016 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/194735 |
| citation_txt |
Investigation of ozone synthesis in the negative pulsed corona discharge in oxygen at the combined supply voltage / V.I. Golota, B.B. Kadolin, I.A. Paschenko // Problems of atomic science and tecnology. — 2021. — № 1. — С. 74-77. — Бібліогр.: 4 назв. — англ. |
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2025-11-27T01:50:30Z |
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ISSN 1562-6016. ВАНТ. 2021. №1(131)
74 PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2021, №1. Series: Plasma Physics (27), p. 74-77.
https://doi.org/10.46813/2021-131-074
INVESTIGATION OF OZONE SYNTHESIS IN THE NEGATIVE PULSED
CORONA DISCHARGE IN OXYGEN AT THE COMBINED SUPPLY
VOLTAGE
V.I. Golota, B.B. Kadolin, I.A. Paschenko
IPENMA NSC “Kharkov Institute of Physics and Technology”, Kharkiv, Ukraine
E-mail: paschenko@kipt.kharkov.ua
The influence of combined supply voltage parameters (bias voltage and voltage pulse amplitude) on efficiency of
ozone synthesis in the negative pulsed corona discharge in oxygen was obtained. Pulse overvoltage led to
intensification of discharge processes. Bias voltage applied during the discharge channel relaxation essentially
increased the efficiency of ozone synthesis. It was established that the “optimal” bias voltage which provides
maximum ozone generation doesn’t depend on voltage pulse amplitude, but depends on input oxygen concentration
and generated ozone concentration.
PACS: 52.75.-d, 52.77.-j, 52.80.Hc, 82.33.Xj
INTRODUCTION
As a result of increased industrial use of ozone, the
economic and operational requirements for the processes
of its generation have been raised. Along with the
traditional barrier ozone generators, more and more
attention is paid to the barrierless discharges in a point-to-
plane electrode system [1]. One of the advantages of the
barrierless discharge over the barrier discharge is the
ability to control discharge processes using a combined
supply voltage. Due to the combined power supply, high
voltage can be applied to the interelectrode gap during the
discharge breakdown and can be completely or partially
removed during the channel relaxation. The matter is that
negative corona discharge at the DC voltage implemented
as Trichel pulses. Plasma-chemical processes take place
during these current pulses and between the pulses only
the charge particles motion occurs [2].
As was shown earlier [3], the pulsed power supply
results in a significant increase in both the maximum
achievable ozone concentration and the efficiency of its
synthesis. As it was assumed, the pulse power supply
provides overvoltage on the discharge gap during its
breakdown that leads to intensification of ionization and
excitation processes. Voltage decrease between pulses
gives the decrease of energy losses for charge particles
movement during the relaxation of the current channel.
At subsequent studies it was shown that the
discharge-to-spark transition voltage depended on the
bias voltage [4]. In sum, a hypothesis was put forward
that the negative space charge initiating a spark
breakdown is accumulated in the interelectrode gap. The
use of low-voltage DC component between high-voltage
pulses contributes to a faster absorption of the charge and
expansion of the operating voltage range for the ozone
generator.
So, the ability to apply higher voltage at the moment
of discharge breakdown results in the increased specific
energy input into the discharge. On the other hand, the
low-voltage DC component of the combined power
supply unit ensures the directional ion motion (electrons
left the gap or “stuck”) in the decaying current channel,
and the energy is spent on the processes not directly
related to the ozone synthesis. In this paper, the results of
the study for the dependence of ozone synthesis
efficiency on the low-voltage DC component of the
combined power supply in oxygen (90...96 %) are
presented.
EXPERIMENTAL UNIT
The plasma-chemical reactor (PCR) was a cylindrical
coaxial system. The PCR anode was made of finely
dispersed graphite 500 mm long and 38 mm in inner
diameter. A sectioned cathode was located along the axis
of the reactor, which consisted of 54 "star-like" electrode
sections separated by cylindrical spacer sleeves 8 mm
long. Each star-like cathode section was a 0.3 mm thick
stainless steel disc with 15 radially spaced beams. Each
beam was 4 mm high, 0.6 mm wide and had a wedge-like
apex with a 30
0
angle. The permissible deviation for the
axis of the sectioned cathode from the axis of the
cylindrical anode was no more than 50 μm. The electrical
capacitance of one PCR was 44.5 pF. The experiments
were carried out using the module consisting of one to
four PCR connected in series along the gas path and in
parallel to the electric power supply unit.
In addition to PCR, the experimental stand (Fig. 1)
included an "oxygen source" module. This module
provided stable supply of the oxygen-air mixture with
oxygen concentration of up to 96 % and flow rate of up to
16 l/min.
Fig. 1. Scheme of the experimental stand for
studying the PCR operation on oxygen
O
n
y
x
#1
O
n
y
x
#2
O
n
y
x
#3 P
[O2]
Q
300 l
W
PPS
300W
I
V
[O3]
PCR
230V, 50Hz
ISSN 1562-6016. ВАНТ. 2021. №1(131) 75
This module contained three Onyx
+
oxygen
concentrators connected in parallel to the gas path,
manometer, oxygen meter O2-Analyzer (0...100 %),
flow meter EPI 8636 MP (0...25 nl/min), receiver
(300 l), flow meters PM-0.63Г and РM-4Г.
The second module of the stand included the test
PCR(s), pulse power supply unit (PPS) and diagnostic
tools. The high-voltage PPS made it possible to generate
high-voltage pulses of submicrosecond duration
(800...2200 ns) with the repetition rate of 1...20 kHz and
the amplitude of up to 12 kV. The rise time of the pulse
leading edge was 500 ns. The typical oscillogram of
the high-voltage pulse for the equivalent load with the
capacity of 44 pF is shown in Fig. 2.
Fig. 2. The typical oscillogram of the high voltage pulse
The bias circuit was formed by the high-voltage
capacitor C and the group of high-voltage diodes D
(Fig. 3). The bias voltage of negative polarity Ud was
maintained by this circuit in the discharge gap in the
interval between the high-voltage pulses.
Fig. 3. Electric circuit for connecting the PCR unit with
the “bias chain”
The voltage across the discharge gap was measured
via the digital oscilloscope Tektronix TDS-2024V with
the transmission frequency of 200 MHz using the high-
voltage probe P6015A with the division ratio of 1:1000
and the bandwidth of 10 Hz...75 MHz. The signal from
the oscilloscope was sent to the computer. The power
consumed by PPS was recorded with a wattmeter. The
ozone concentration at the PCR output was measured
with the ozone meter Teledyne M465H.
EXPERIMENTAL RESULTS
The effect of the bias voltage Ud on the ozone
synthesis in PCR was investigated. Voltage Ud could
varied by changing the capacitance of the bias circuit.
The experiments were carried out for various amplitude
values of the high-voltage pulse Um. It should be noted
that dependence of ozone concentration at the output of
the PCR unit on the bias voltage (Fig. 4) had a
maximum point. So, the corresponding value of bias
voltage is the “optimal” for ozone synthesis under
current conditions of gas supply.
10
20
30
40
-1000 -800 -600 -400
[O3],
g/nm
3
Ud, V
Um=9,92kV Um=10,24kV
Um=10,56kV Um=10,72kV
Um=10,88kV Um=11,04kV
Fig. 4. Dependence of ozone concentration [O3] at the
output of the PCR unit on the bias voltage Ud at
different amplitudes of the voltage pulse Um. Oxygen
concentration is 91.3...91.6 %, flow rate is 2.5 l/min
At the optimal (from the point of view of the
maximum ozone concentration synthesis) values of bias
voltage, the power consumption also increase (Fig. 5).
60
70
80
90
100
110
-1000 -800 -600 -400
W, W
Ud, V
Um=9,92kV Um=10,24kV
Um=10,56kV Um=10,72kV
Um=10,88kV Um=11,04kV
Fig. 5. Dependence of the power W consumed by the
power supply unit on the bias voltage Ud at different
amplitudes of the voltage pulse Um. Oxygen
concentration is 91.3...91.6 %, flow rate is 2.5 l/min
However, at the optimal choice of bias voltage, the
increase in ozone concentration occurred not only due to
the increase in power consumption. In Fig. 6 the
dependence of energy consumption for ozone synthesis
(k, (W∙h)/gO3) on the bias voltage Ud is presented. For
clarity, the value of power consumption was reduced by
the power constantly consumed by the power supply
source (fan power and stabilizer power). It was 38 W
for the power supply unit being used.
76 ISSN 1562-6016. ВАНТ. 2021. №1(131)
10
15
20
25
-1000 -800 -600 -400
k,
W*/gO3
Ud, V
Um=10,24kV Um=10,56kV Um=10,72kV Um=10,88kV
Um=11,04kV Um=11,2kV Um=11,36kV Um=11,6kV
Fig. 6. Dependence of energy consumption for the ozone
synthesis k on the bias voltage Ud at different
amplitudes of the voltage pulse Um. Oxygen
concentration is 91.3...91.6 %, flow rate is 2.5 l/min
In addition, it can be seen (see Fig. 6) that the
dependence of energy consumption for ozone synthesis
on bias voltage is almost independent of the high-
voltage pulse amplitude.
Pure energy consumption of the discharge processes
is of interest. The "net" power consumed by the
discharge was estimated as the difference between the
power consumed by the power supply unit loaded onto
the PCR unit and the power consumed by the power
supply source loaded onto the equivalent capacitive
load. The "net" energy consumption for ozone synthesis
kd, taking into account only the power of discharge
processes, depending on the "optimal" generated ozone
concentration, is shown in Fig. 7. It should be noted that
specific energy consumption for ozone synthesis is
increased with increasing of generated ozone
concentration.
5
6
7
8
9
15 20 25 30 35 40 45
kd,
W*/gO
3
[O3],
ng/m
3
Fig. 7. Dependence of "net" energy consumption for the
ozone synthesis kd on the value of the "optimal"
generated ozone concentration. Oxygen concentration is
91.3...91.6 %, flow rate is 2.5 l/min
The data on the experiments with different oxygen
concentrations (90...96 %) in the feed gas and different
gas flow rates (0.25...2.5 l/min) are presented in Fig. 8.
Experimental data for 96 % oxygen concentration show
that optimal choice of bias voltage can increase output
ozone concentration even into two times. Besides, one
can see that the “optimal” bias voltage have to be raised
in the case of reduction of flow rate (increasing of
generated ozone concentration) and in the case of
decreasing of input oxygen concentration.
0
40
80
120
-900 -700 -500 -300Ud, V
[O3],
ng/m
3
96% O2 94% O2
92% O2 90% O2
2,5 l/min
1,5 l/min
1 l/min
0,5 l/min
0,25 l/min
2,5 l/min
1,5 l/min
1 l/min
0,5 l/min
Fig. 8. Dependence of the ozone concentration [O3] at
the output of the PCR unit on the bias voltage Ud at
different oxygen concentrations and flow rates.
Um=11.2 kV
CONCLUSIONS
The use of bias voltage has a significant effect on
efficiency of ozone generation in the negative pulsed
corona discharge. The correct choice of the “optimal”
bias voltage Ud results in maximum of consumed power
and minimum of specific energy consumption for ozone
synthesis that led to the maximum ozone output. The
wrong one can decrease this output at dozen of percents.
We have an experimental fact that there is no
dependence (weak dependence) of the "optimal" bias
voltage on the voltage pulse amplitude.
It was found that the value of the optimal bias
voltage should be decreased with decreasing of
expected ozone output (increasing of flow rate), and
also it should be increased with decreasing of input
oxygen concentration.
REFERENCES
1. Yu.V. Filippov, V.A. Voblikova, and V.I. Panteleev,
Electrosynthesis of Ozone. Moscow, 1987.
2. Yu.P. Raizer. Gas discharge physics. Springer:
“Verlag”, 1991.
3. V.I. Golota, L.M. Zavada, O.V. Kotyukov,
O.V. Poliakov, S.G. Pugach. Ozone synthesis efficiency
upgrading in the pulsed point-to-plane gas discharge //
Problems of Atomic Science and Technology. Series
«Plasma Physics and New Methods Acceleration».
2006, № 5, p. 91-94.
4. S.M. Mankovskyi, B.B. Kadolin, L.M. Zavada,
V.I. Golota, M.O. Yegorov. Features of the
microsecond pulsed discharge ignition in oxygen in a
point-to-plane configuration // Problems of Atomic
Science and Technology. Series «Plasma Physics and
New Methods Acceleration». 2018, №4, p. 168-171.
Article received 16.11.2020
ISSN 1562-6016. ВАНТ. 2021. №1(131) 77
ИССЛЕДОВАНИЕ СИНТЕЗА ОЗОНА В ОТРИЦАТЕЛЬНОЙ ИМПУЛЬСНОЙ КОРОНЕ
В КИСЛОРОДЕ ПРИ КОМБИНИРОВАННОМ ПИТАНИИ
В.И. Голота, Б.Б. Кадолин, И.А. Пащенко
Обнаружено влияние параметров комбинированного питания (напряжения смещения и амплитуды
импульса) на эффективность синтеза озона в отрицательной импульсной короне в кислороде.
Перенапряжение во время импульса питания приводило к усилению разрядных процессов. Напряжение
смещения, приложенное во время релаксации разрядного канала, существенно увеличивало эффективность
синтеза озона. Имеет место «оптимальное» напряжение смещения, обеспечивающее максимальный выход
озона, которое не зависит от амплитуды импульса напряжения, но зависит от концентрации кислорода и
генерируемой концентрации озона.
ДОСЛІДЖЕННЯ СИНТЕЗУ ОЗОНУ У ВІД’ЄМНІЙ ІМПУЛЬСНІЙ КОРОНІ В КИСНІ
ПРИ КОМБІНОВАНОМУ ЖИВЛЕННІ
В.І. Голота, Б.Б. Кадолін, І.А. Пащенко
Виявлено вплив параметрів комбінованого живлення (напруги зміщення і амплітуди імпульсу) на
ефективність синтезу озону у від’ємній імпульсній короні в кисні. Перенапруга під час імпульсу живлення
вела до інтенсифікації розрядних процесів. Напруга зміщення, прикладена під час релаксації розрядного
каналу, значно підвищувала ефективність синтезу озону. Має місце «оптимальна» напруга зміщення, яка
забезпечує максимальний вихід озону і не залежить від амплітуди імпульсу напруги, але залежить від
концентрації кисню та генерованої концентрації озону.
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