Investigation of operating parameters on CO<sub>2</sub> splitting by dielectric barrier discharge plasma

Pan CHEN (陈攀); Jun SHEN (沈俊); Tangchun RAN (冉唐春); Tao YANG (杨涛); Yongxiang YIN (印永祥)

doi:10.1088/2058-6272/aa8903

Plasma Science and Technology > 2017 > 19(12): 125505. > DOI: 10.1088/2058-6272/aa8903

Pan CHEN (陈攀), Jun SHEN (沈俊), Tangchun RAN (冉唐春), Tao YANG (杨涛), Yongxiang YIN (印永祥). Investigation of operating parameters on CO₂ splitting by dielectric barrier discharge plasma[J]. Plasma Science and Technology, 2017, 19(12): 125505. DOI: 10.1088/2058-6272/aa8903

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Investigation of operating parameters on CO₂ splitting by dielectric barrier discharge plasma

College of Chemical Engineering, Sichuan University, Chengdu, 610065, People’s Republic of China

Funds: The authors gratefully acknowledge the support of National Natural Science Foundation of China (No. 11375123).

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Received Date: February 20, 2017

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Abstract

Abstract

Experiments of CO₂splitting by dielectric barrier discharge (DBD) plasma were carried out, and the influence of CO₂ flow rate, plasma power, discharge voltage, discharge frequency on CO₂ conversion and process energy efficiency were investigated. It was shown that the absolute quantity of CO₂ decomposed was only proportional to the amount of conductive electrons across the discharge gap, and the electron amount was proportional to the discharge power; the energy efficiency of CO₂ conversion was almost a constant at a lower level, which was limited by CO₂ inherent discharge character that determined a constant gap electric field strength. This was the main reason why CO₂ conversion rate decreased as the CO₂ flow rate increase and process energy efficiency was decreased a little as applied frequency increased. Therefore, one can improve the CO₂ conversion by less feed flow rate or larger discharge power in DBD plasma, but the energy efficiency is difficult to improve.
- CO₂ splitting,
- dielectric barrier discharges,
- conversion,
- energy efficiency

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References

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Investigation of operating parameters on CO₂ splitting by dielectric barrier discharge plasma