DOI: 10.1016/j.jcou.2017.12.009
Scopus记录号: 2-s2.0-85041892305
论文题名: Carbon dioxide dissociation in a microwave plasma reactor operating in a wide pressure range and different gas inlet configurations
作者: Belov I. ; Vermeiren V. ; Paulussen S. ; Bogaerts A.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 386
结束页码: 397
语种: 英语
英文关键词: Conversion
; Discharge
; Microwave
; Plasma
Scopus关键词: Carbon
; Carbon dioxide
; Computational fluid dynamics
; Discharge (fluid mechanics)
; Dissociation
; Energy efficiency
; Flow of gases
; Flow patterns
; Gases
; Microwaves
; Plasma applications
; Plasmas
; Ship conversion
; Vortex flow
; Computational fluid dynamics simulations
; Decomposition reaction
; Exhaust temperature
; Favorable conditions
; Flow configurations
; Microwave plasma reactors
; Pressure ranges
; Vortex configurations
; Electric discharges
英文摘要: Microwave (MW) plasmas represent a promising solution for efficient CO2 dissociation. MW discharges are also very versatile and can be sustained at various pressure and gas flow regimes. To identify the most favorable conditions for the further scale-up of the CO2 decomposition reaction, a MW plasma reactor operating in pure CO2 in a wide pressure range (200 mbar–1 bar) is studied. Three different gas flow configurations are explored: a direct, reverse and a vortex regime. The CO2 conversion and energy efficiency drop almost linearly with increasing pressure, regardless of the gas flow regime. The results obtained in the direct flow configuration underline the importance of post-discharge cooling, as the exhaust of the MW plasma reactor in this regime expanded into the vacuum chamber without additional quenching. As a result, this system yields exhaust temperatures of up to 1000 K, which explains the lowest conversion (∼3.5% at 200 mbar and 2% at 1 bar). A post-discharge cooling step is introduced for the reverse gas inlet regime and allows the highest conversion to be achieved (∼38% at 200 mbar and 6.2% at 1 bar, with energy efficiencies of 23% and 3.7%). Finally, a tangential gas inlet is utilized in the vortex configuration to generate a swirl flow pattern. This results in the generation of a stable discharge in a broader range of CO2 flows (15–30 SLM) and the highest energy efficiencies obtained in this study (∼25% at 300 mbar and ∼13% at 1 bar, at conversions of 21% and 12%). The experimental results are complemented with computational fluid dynamics simulations and with the analysis of the latest literature to identify the further research directions. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111943
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Sustainable Materials Management, VITO, Boeretang 200, Mol, 2400, Belgium; PLASMANT, Department of Chemistry, University of Antwerp, Wilrijk, Antwerp B-2610, Belgium
Recommended Citation:
Belov I.,Vermeiren V.,Paulussen S.,et al. Carbon dioxide dissociation in a microwave plasma reactor operating in a wide pressure range and different gas inlet configurations[J]. Journal of CO2 Utilization,2018-01-01,24