The Use of Competitive Reactions for Studying the Process of Unsaturated Organic Compound Vapor Removal from Air by Pulsed Discharge Plasma

Filatov, I. E.; Uvarin, V. V.; Kuznetsov, D. L.

doi:10.1134/s1063785020010216

Cited by 7 publications

(8 citation statements)

References 11 publications

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“…In the course of plasma treatment, it is possible to determine the formation of a certain amount of oxidation product 1b. Unsaturated compounds, as shown earlier [6,10,11] are effectively removed by ozone generated by non-equilibrium plasma in air mixtures.…”

Section: Rubber Pyrolysis Productsmentioning

confidence: 76%

“…The gas mixture was processed by a series of pulses with a duration of t = 2-6 minutes. The initial gas mixture and the mixture after processing by a series of pulses were analyzed by the GC/MS method, the ozone content was determined by the spectrometric method at a wavelength of 255 nm according to a procedure similar to [6].…”

Section: Methodsmentioning

confidence: 99%

“…The fraction contains a number of unsaturated hydrocarbons (2a, 2b, 2e, 2f, 2k) and saturated (2d, 2e). It is interesting to note that unsaturated hydrocarbons are removed clearly better than saturated hydrocarbons, which is associated with the presence of a reaction center with ozone in thema double bond [6,10,11]. Measurement of ozone concentration shows that it is formed only after complete removal of impurities.…”

Section: Polypropylene Pyrolysis Productsmentioning

confidence: 99%

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Non-equilibrium plasma of pulsed corona discharge for the purpose of air purification from typical ventilation exhausts of polymer production

Filatov¹,

Uvarin²,

Kuznetsov³

2022

8th International Congress on Energy Fluxes and Radiation Effects

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The paper presents the results of a study of the impact of pulsed corona discharge plasma on air containing volatile products of polymer pyrolysis. The following materials were chosen as objects of study: rubber, polypropylene and ABS plastic. Polymeric materials were subjected to pyrolysis at a temperature of 550–650 °C. Analysis of the products was carried out by GC/MS method. These are aliphatic and aromatic unsaturated compounds of various structures, including monomers. Components with increased volatility (b.p. < 160 °C) can pollute the air, so they were studied in detail. For the research, a pulsed corona discharge was used with the following parameters: pulse duration 40 ns, pulse repetition rate 10 Hz, voltage 100 kV, current – up to 100 A. The relative reactivity of the components was estimated using the method of competing reactions. It is shown that the method more effectively removes unsaturated and saturated aliphatic compounds whereas aromatic compounds eliminate less effectively. It is shown that high reactivity of unsaturated compounds is due to their interaction with ozone. The found dependencies will be useful in the development of new energy-efficient air purification technologies for the tasks of primary and secondary processing of plastics.

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Section: Rubber Pyrolysis Productsmentioning

confidence: 76%

Section: Methodsmentioning

confidence: 99%

Section: Polypropylene Pyrolysis Productsmentioning

confidence: 99%

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Non-equilibrium plasma of pulsed corona discharge for the purpose of air purification from typical ventilation exhausts of polymer production

Filatov¹,

Uvarin²,

Kuznetsov³

2022

8th International Congress on Energy Fluxes and Radiation Effects

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“…The gas mixture was not discharge−treated during time intervals when the ozone content analysis is performed. The ozone content was determined by the spectrographic method as described in [19] using the Ozone Absorption Table at about nm [20]. The experiments were performed at room temperature, however, the ozone concentration [O 3 ] (in ppm) and its specific output…”

mentioning

confidence: 99%

Influence of discharge chamber parameters on the efficiency of ozone generation by pulsed corona discharge

Filatov

Kuznetsov

2022

Technical Physics Letters

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The article discusses ways to increase the efficiency of ozone production in a coaxial chamber using a pulsed corona discharge. The effect of the discharge gap and the diameter of the potential electrode on the energy efficiency of ozone production using a pulsed corona discharge of negative polarity with duration of 40 ns and voltage of about 100 kV was investigated. It is shown that with an increase in the discharge gap, the productivity of the installation decreases, and the energy efficiency increases. The optimal diameter of the potential electrode has a value of about 0.64 mm. This information will be useful in the development of highly efficient ozonators and in optimizing the parameters of plasma-chemical reactors for air purification by electro-discharge methods. Keywords: pulsed corona discharge, ozone, non-equilibrium plasma, ozonator.

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“…Components were studied both separately and in combination. Under otherwise equal conditions, compounds compete with plasma components for reacting; this makes it possible to determine the reactivity parameter accurately and estimate the rate of fast processes using the gas-liquid chromatography technique [13].…”

mentioning

confidence: 99%

Investigation of the relative reactivity of aromatic compounds in air under the action of pulsed discharge plasma

I.E

V.V.

D.L.

2022

Technical Physics Letters

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Based on the method of competing reactions, a method for determining the relative reactivity of aromatic vapors in relation to the plasma components of a pulsed corona discharge is developed. The parameters of the relative reactivity of aromatic compounds in the air and nitrogen stream were obtained using model mixtures based on benzene, toluene, and xylene with a content of 250-500 ppm. The effect of water vapor on the process is shown. The obtained data will be useful for optimizing the processes of plasma-chemical air purification from the vapors of toxic aromatic compounds. Keywords: Corona discharge, aromatic compounds, non-equilibrium atmospheric pressure plasma, air purification, volatile organic compounds, BTEX.

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The Use of Competitive Reactions for Studying the Process of Unsaturated Organic Compound Vapor Removal from Air by Pulsed Discharge Plasma

Cited by 7 publications

References 11 publications

Non-equilibrium plasma of pulsed corona discharge for the purpose of air purification from typical ventilation exhausts of polymer production

Non-equilibrium plasma of pulsed corona discharge for the purpose of air purification from typical ventilation exhausts of polymer production

Influence of discharge chamber parameters on the efficiency of ozone generation by pulsed corona discharge

Investigation of the relative reactivity of aromatic compounds in air under the action of pulsed discharge plasma

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