Combustion and reformulation characteristics of biogas in plasma assisted combustion using microwave induced non-equilibrium plasma

Research output: Contribution to conferencePaper

Abstract

To utilize biogas validly, we have applied plasma assisted combustion using microwave to the combustion and reformulation of biogas. In this study, the characteristics of combustion and reformulation of biogas have been investigated by comparing of large and small nozzle. In case of small nozzle, the combustion and reformulation of biogas stably occurs over a wider equivalence ratio area than that in case of large nozzle, because the damping of microwave is inhibited. N2 and OH radical decrease, and H, CO, CH and C2 radicals increase as equivalence ratio. H2 and CO concentrations increase, and CO2 concentration decreases with increasing equivalence ratio. In this method, since the reaction of CO2 + e → CO + O occurs, the amount of CO2 of produced gas is less than the amount of supplied CO2 in high equivalence ratio region. Cold gas efficiency increases with increasing H2 and CO concentrations. When CH4 is completely reformed into H2 and CO, cold gas efficiency is about 95 %. However, the maximum value of cold gas efficiency is approximately 110 % at small nozzle, because CO2, which does not have calorific value, is decomposed into CO, which has calorific value.

Original languageEnglish
Publication statusPublished - Jan 1 2017
Event11th Asia-Pacific Conference on Combustion, ASPACC 2017 - Sydney, Australia
Duration: Dec 10 2017Dec 14 2017

Other

Other11th Asia-Pacific Conference on Combustion, ASPACC 2017
CountryAustralia
CitySydney
Period12/10/1712/14/17

Fingerprint

nonequilibrium plasmas
Biofuels
Biogas
Carbon Monoxide
nozzles
equivalence
cold gas
Nozzles
Microwaves
Plasmas
microwaves
Calorific value
Gases
Damping
damping
methylidyne
gases

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Chemical Engineering(all)

Cite this

Yamamoto, T., Uchiyama, S., Matsune, H., & Kishida, M. (2017). Combustion and reformulation characteristics of biogas in plasma assisted combustion using microwave induced non-equilibrium plasma. Paper presented at 11th Asia-Pacific Conference on Combustion, ASPACC 2017, Sydney, Australia.

Combustion and reformulation characteristics of biogas in plasma assisted combustion using microwave induced non-equilibrium plasma. / Yamamoto, Tsuyoshi; Uchiyama, S.; Matsune, Hideki; Kishida, Masahiro.

2017. Paper presented at 11th Asia-Pacific Conference on Combustion, ASPACC 2017, Sydney, Australia.

Research output: Contribution to conferencePaper

Yamamoto, T, Uchiyama, S, Matsune, H & Kishida, M 2017, 'Combustion and reformulation characteristics of biogas in plasma assisted combustion using microwave induced non-equilibrium plasma' Paper presented at 11th Asia-Pacific Conference on Combustion, ASPACC 2017, Sydney, Australia, 12/10/17 - 12/14/17, .
Yamamoto T, Uchiyama S, Matsune H, Kishida M. Combustion and reformulation characteristics of biogas in plasma assisted combustion using microwave induced non-equilibrium plasma. 2017. Paper presented at 11th Asia-Pacific Conference on Combustion, ASPACC 2017, Sydney, Australia.
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N2 - To utilize biogas validly, we have applied plasma assisted combustion using microwave to the combustion and reformulation of biogas. In this study, the characteristics of combustion and reformulation of biogas have been investigated by comparing of large and small nozzle. In case of small nozzle, the combustion and reformulation of biogas stably occurs over a wider equivalence ratio area than that in case of large nozzle, because the damping of microwave is inhibited. N2 and OH radical decrease, and H, CO, CH and C2 radicals increase as equivalence ratio. H2 and CO concentrations increase, and CO2 concentration decreases with increasing equivalence ratio. In this method, since the reaction of CO2 + e → CO + O occurs, the amount of CO2 of produced gas is less than the amount of supplied CO2 in high equivalence ratio region. Cold gas efficiency increases with increasing H2 and CO concentrations. When CH4 is completely reformed into H2 and CO, cold gas efficiency is about 95 %. However, the maximum value of cold gas efficiency is approximately 110 % at small nozzle, because CO2, which does not have calorific value, is decomposed into CO, which has calorific value.

AB - To utilize biogas validly, we have applied plasma assisted combustion using microwave to the combustion and reformulation of biogas. In this study, the characteristics of combustion and reformulation of biogas have been investigated by comparing of large and small nozzle. In case of small nozzle, the combustion and reformulation of biogas stably occurs over a wider equivalence ratio area than that in case of large nozzle, because the damping of microwave is inhibited. N2 and OH radical decrease, and H, CO, CH and C2 radicals increase as equivalence ratio. H2 and CO concentrations increase, and CO2 concentration decreases with increasing equivalence ratio. In this method, since the reaction of CO2 + e → CO + O occurs, the amount of CO2 of produced gas is less than the amount of supplied CO2 in high equivalence ratio region. Cold gas efficiency increases with increasing H2 and CO concentrations. When CH4 is completely reformed into H2 and CO, cold gas efficiency is about 95 %. However, the maximum value of cold gas efficiency is approximately 110 % at small nozzle, because CO2, which does not have calorific value, is decomposed into CO, which has calorific value.

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