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The effect of atmospheric plasma discharge voltage on the conversion reaction of plasma CH4 to H2
- Categories:Industry News
- Author:Plasma cleaning machine-CRF plasma plasma equipment-plasma surface treatment machine manufacturer-chengfeng intelligent manufacturing
- Origin:
- Time of issue:2022-01-17
- Views:
(Summary description)The effect of atmospheric plasma discharge voltage on the conversion reaction of plasma CH4 to H2: With the increase of the discharge voltage, the conversion rate of methane and the yield of C2 hydrocarbons showed an upward trend, and the selectivity of C2 hydrocarbons increased first and then decreased. When the atmospheric plasma discharge voltage was 16 kV, the selectivity of C2 hydrocarbons was large. According to literature reports, the emission intensity changes of CH active species under low temperature atmospheric plasma conditions are directly affected by the working pressure and discharge parameters. The degree of methane cracking in the plasma can be detected by the strength of the CH active species. Because the intensity of the same spectral line is proportional to the particle density of the component, the relative intensity of the spectral line can be inferred from the change of each process parameter. The number of particles varies with the corresponding process parameters. With increasing discharge voltage, the emission intensity of atmospheric plasmaCH active species increases with the increase of discharge voltage. The reason is that under the condition of constant gas flow rate, the energy obtained by the electrons accelerated by the electric field is low when the input voltage is low, and the total collision cross-sectional area in the low-energy state is also low, and the collision probability between CH4 and high-energy electrons is small, so This results in fewer active species being generated. With the increase of the discharge voltage, the ionization rate and electron density increase, and the cross-section of the collision between high-energy electrons and CH4 also increases, which means that the collision probability increases and the generated CH active species increase. It was also noticed that the coke deposits on the reactor walls increased with increasing voltage during the experiment.
The effect of atmospheric plasma discharge voltage on the conversion reaction of plasma CH4 to H2
(Summary description)The effect of atmospheric plasma discharge voltage on the conversion reaction of plasma CH4 to H2:
With the increase of the discharge voltage, the conversion rate of methane and the yield of C2 hydrocarbons showed an upward trend, and the selectivity of C2 hydrocarbons increased first and then decreased. When the atmospheric plasma discharge voltage was 16 kV, the selectivity of C2 hydrocarbons was large. According to literature reports, the emission intensity changes of CH active species under low temperature atmospheric plasma conditions are directly affected by the working pressure and discharge parameters.
The degree of methane cracking in the plasma can be detected by the strength of the CH active species. Because the intensity of the same spectral line is proportional to the particle density of the component, the relative intensity of the spectral line can be inferred from the change of each process parameter. The number of particles varies with the corresponding process parameters. With increasing discharge voltage, the emission intensity of atmospheric plasmaCH active species increases with the increase of discharge voltage.
The reason is that under the condition of constant gas flow rate, the energy obtained by the electrons accelerated by the electric field is low when the input voltage is low, and the total collision cross-sectional area in the low-energy state is also low, and the collision probability between CH4 and high-energy electrons is small, so This results in fewer active species being generated. With the increase of the discharge voltage, the ionization rate and electron density increase, and the cross-section of the collision between high-energy electrons and CH4 also increases, which means that the collision probability increases and the generated CH active species increase. It was also noticed that the coke deposits on the reactor walls increased with increasing voltage during the experiment.
- Categories:Industry News
- Author:Plasma cleaning machine-CRF plasma plasma equipment-plasma surface treatment machine manufacturer-chengfeng intelligent manufacturing
- Origin:
- Time of issue:2022-01-17 21:27
- Views:
Information
The effect of atmospheric plasma discharge voltage on the conversion reaction of plasma CH4 to H2:
With the increase of the discharge voltage, the conversion rate of methane and the yield of C2 hydrocarbons showed an upward trend, and the selectivity of C2 hydrocarbons increased first and then decreased. When the atmospheric plasma discharge voltage was 16 kV, the selectivity of C2 hydrocarbons was large. According to literature reports, the emission intensity changes of CH active species under low temperature atmospheric plasma conditions are directly affected by the working pressure and discharge parameters.
The degree of methane cracking in the plasma can be detected by the strength of the CH active species. Because the intensity of the same spectral line is proportional to the particle density of the component, the relative intensity of the spectral line can be inferred from the change of each process parameter. The number of particles varies with the corresponding process parameters. With increasing discharge voltage, the emission intensity of atmospheric plasmaCH active species increases with the increase of discharge voltage.
The reason is that under the condition of constant gas flow rate, the energy obtained by the electrons accelerated by the electric field is low when the input voltage is low, and the total collision cross-sectional area in the low-energy state is also low, and the collision probability between CH4 and high-energy electrons is small, so This results in fewer active species being generated. With the increase of the discharge voltage, the ionization rate and electron density increase, and the cross-section of the collision between high-energy electrons and CH4 also increases, which means that the collision probability increases and the generated CH active species increase. It was also noticed that the coke deposits on the reactor walls increased with increasing voltage during the experiment.
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