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Pregled bibliografske jedinice broj: 1002396

Numerical investigation of co-firing biomass under oxy-MILD combustion


Zhang, Jiaye; Bai, Shengjie; Wang, Xuebin; Mikulčić, Hrvoje; Zhou, Yuegui; Tan, Houzhang; Vujanović, Milan; Liu, Hexin
Numerical investigation of co-firing biomass under oxy-MILD combustion // SDEWES2018.0477 / Ban, Marko (ur.).
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. SDEWES2018.0477, 11 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


Naslov
Numerical investigation of co-firing biomass under oxy-MILD combustion

Autori
Zhang, Jiaye ; Bai, Shengjie ; Wang, Xuebin ; Mikulčić, Hrvoje ; Zhou, Yuegui ; Tan, Houzhang ; Vujanović, Milan ; Liu, Hexin

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
SDEWES2018.0477 / Ban, Marko - Zagreb : University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018

Skup
13th Conference on Sustainable Development of Energy, Water and Environment Systems - SDEWES

Mjesto i datum
Palermo, Italija, 30.09.-04.10.2018

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
MILD combustion ; oxy-fuel combustion ; co-firing biomass ; NOx emission

Sažetak
Oxy-fuel combustion is an attractive technology for the mitigation of CO2 emission from utility boiler. Nowadays, negative CO2 emission concept attracts increasing concern. Biomass is considered to be CO2-neutral. In this work, co- firing of biomass and coal was applied to achieve below-zero CO2 emission. MILD (moderate and intense low-oxygen dilution) combustion, which has high thermal efficiency and the advantage of NOx reduction, has become a hot point in recent years. In this paper, FLUENT 17.0 was used to simulate the co-firing of coal (Guasare coal) and biomass (olive waste) under traditional and oxy-fuel conditions respectively. EDC model with J-L four-step reaction was adopted to consider the turbulent chemistry interaction behavior. First, the model validation was conducted in the IFRF furnace NO.1 under traditional condition, and the results fitted well with experiments. Then combined with the characteristics of oxy-MILD combustion and co-firing biomass, the further research was carried out under the conditions of 10%, 20% and 30% biomass fraction respectively. The effect of working conditions on temperature distribution, rate of entrainment, burnout rate as well as NOx emission were discussed. Results show that for MILD case, oxy-combustion and biomass co-firing generate a more moderate temperature field and wall heat flux. MILD combustion in traditional air-mode has a higher peak temperature, reaching 1788 K. While under oxy-fuel conditions, it has a milder temperature field with a lower peak temperature, only 1702 K. The peak temperatures at 10%, 20%, and 30% biomass mixing ratios are 1690K, 1683 K, 1674 K respectively. The NOx emission is also significantly reduced when oxy-combustion and biomass co-firing are employed in MILD case.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo



POVEZANOST RADA


Projekt / tema
120-1201918-1920 - Racionalno skladištenje energije za održivi razvoj energetike (Neven Duić, )

Ustanove
Fakultet strojarstva i brodogradnje, Zagreb

Profili:

Avatar Url Hrvoje Mikulčić (autor)

Avatar Url Milan Vujanović (autor)

Citiraj ovu publikaciju

Zhang, Jiaye; Bai, Shengjie; Wang, Xuebin; Mikulčić, Hrvoje; Zhou, Yuegui; Tan, Houzhang; Vujanović, Milan; Liu, Hexin
Numerical investigation of co-firing biomass under oxy-MILD combustion // SDEWES2018.0477 / Ban, Marko (ur.).
Zagreb: University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, 2018. SDEWES2018.0477, 11 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
Zhang, J., Bai, S., Wang, X., Mikulčić, H., Zhou, Y., Tan, H., Vujanović, M. & Liu, H. (2018) Numerical investigation of co-firing biomass under oxy-MILD combustion. U: Ban, M. (ur.)SDEWES2018.0477.
@article{article, editor = {Ban, M.}, year = {2018}, pages = {11}, chapter = {SDEWES2018.0477}, keywords = {MILD combustion, oxy-fuel combustion, co-firing biomass, NOx emission}, title = {Numerical investigation of co-firing biomass under oxy-MILD combustion}, keyword = {MILD combustion, oxy-fuel combustion, co-firing biomass, NOx emission}, publisher = {University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture}, publisherplace = {Palermo, Italija}, chapternumber = {SDEWES2018.0477} }