TY  - JOUR
AU  - Deng, Lei
AU  - Ma, Shihao
AU  - Jiang, Jiahao
AU  - Tie, Yuan
AU  - Zhang, Yan
AU  - Zhu, Zhengrong
AU  - Belošević, Srđan
AU  - Tomanović, Ivan
AU  - Che, Defu
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10232
AB  - Cofiring biomass syngas (BS) with pulverized coal under the oxy-fuel condition is a promising technology, which could encourage the utilization of biomass energy and reduce the emission of greenhouse gases. To investigate cofiring characteristics of biomass syngas and coal, a numerical study was conducted. The influences of oxy-fuel condition, syngas quality, and injection position on temperature distributions and flue gas components in boiler furnace were analyzed. To predict cofiring characteristics accurately under oxy-fuel conditions, a new refined weighted-sum-of-gray-gases model, HCN oxidation model, and NO-char reaction model were used. The simulation results show that syngas reburning and oxy-fuel conditions could reduce NO emission. The NO emission in O2/CO2O2/CO2O2/CO2 conditions is higher than that in air. Biomass syngas with higher calorific values contributes to higher furnace temperatures. Besides, biomass syngas with higher hydrocarbon components is beneficial to lower NO emission. Compared to pure coal combustion, NO concentration at the furnace outlet reduces by 40.2%, 69.0%, and 35.2% in the cases of cofiring with Type A, B, and C biomass syngas at a cofiring ratio of 10%, respectively. The injection position of biomass syngas also has crucial impacts on cofiring characteristics and NO emissions. NO emission has the lowest value when the biomass syngas is injected at the bottom level of the reburn zone. This study could provide a reference for optimization of boiler design and operation when cofiring biomass syngas with pulverized coal under the oxy-fuel condition.
T2  - Journal of Energy Engineering
T1  - Numerical Investigation on Cofiring Characteristics of Biomass Syngas and Coal in a 660-MW Tower Boiler
VL  - 148
IS  - 3
SP  - 04022014
DO  - 10.1061/(ASCE)EY.1943-7897.0000829
ER  - 

@article{
author = "Deng, Lei and Ma, Shihao and Jiang, Jiahao and Tie, Yuan and Zhang, Yan and Zhu, Zhengrong and Belošević, Srđan and Tomanović, Ivan and Che, Defu",
year = "2022",
abstract = "Cofiring biomass syngas (BS) with pulverized coal under the oxy-fuel condition is a promising technology, which could encourage the utilization of biomass energy and reduce the emission of greenhouse gases. To investigate cofiring characteristics of biomass syngas and coal, a numerical study was conducted. The influences of oxy-fuel condition, syngas quality, and injection position on temperature distributions and flue gas components in boiler furnace were analyzed. To predict cofiring characteristics accurately under oxy-fuel conditions, a new refined weighted-sum-of-gray-gases model, HCN oxidation model, and NO-char reaction model were used. The simulation results show that syngas reburning and oxy-fuel conditions could reduce NO emission. The NO emission in O2/CO2O2/CO2O2/CO2 conditions is higher than that in air. Biomass syngas with higher calorific values contributes to higher furnace temperatures. Besides, biomass syngas with higher hydrocarbon components is beneficial to lower NO emission. Compared to pure coal combustion, NO concentration at the furnace outlet reduces by 40.2%, 69.0%, and 35.2% in the cases of cofiring with Type A, B, and C biomass syngas at a cofiring ratio of 10%, respectively. The injection position of biomass syngas also has crucial impacts on cofiring characteristics and NO emissions. NO emission has the lowest value when the biomass syngas is injected at the bottom level of the reburn zone. This study could provide a reference for optimization of boiler design and operation when cofiring biomass syngas with pulverized coal under the oxy-fuel condition.",
journal = "Journal of Energy Engineering",
title = "Numerical Investigation on Cofiring Characteristics of Biomass Syngas and Coal in a 660-MW Tower Boiler",
volume = "148",
number = "3",
pages = "04022014",
doi = "10.1061/(ASCE)EY.1943-7897.0000829"
}

Deng, L., Ma, S., Jiang, J., Tie, Y., Zhang, Y., Zhu, Z., Belošević, S., Tomanović, I.,& Che, D.. (2022). Numerical Investigation on Cofiring Characteristics of Biomass Syngas and Coal in a 660-MW Tower Boiler. in Journal of Energy Engineering, 148(3), 04022014.
https://doi.org/10.1061/(ASCE)EY.1943-7897.0000829

Deng L, Ma S, Jiang J, Tie Y, Zhang Y, Zhu Z, Belošević S, Tomanović I, Che D. Numerical Investigation on Cofiring Characteristics of Biomass Syngas and Coal in a 660-MW Tower Boiler. in Journal of Energy Engineering. 2022;148(3):04022014.
doi:10.1061/(ASCE)EY.1943-7897.0000829 .

Deng, Lei, Ma, Shihao, Jiang, Jiahao, Tie, Yuan, Zhang, Yan, Zhu, Zhengrong, Belošević, Srđan, Tomanović, Ivan, Che, Defu, "Numerical Investigation on Cofiring Characteristics of Biomass Syngas and Coal in a 660-MW Tower Boiler" in Journal of Energy Engineering, 148, no. 3 (2022):04022014,
https://doi.org/10.1061/(ASCE)EY.1943-7897.0000829 . .

TY  - JOUR
AU  - Deng, Lei
AU  - Zhang, Yan
AU  - Ma, Shihao
AU  - Zhu, Zhengrong
AU  - Liu, Hu
AU  - Belošević, Srđan
AU  - Tomanović, Ivan
AU  - Che, Defu
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13110
AB  - Ultra‐supercritical double‐reheat technology, as one of the most advanced coal‐fired power generation technology, is an important direction for emission reduction and energy saving in the world. In this study, the numerical calculation was executed in a 660‐MW ultra‐supercritical double‐reheat tower‐type boiler under deep‐air‐staging conditions. The refined HCN oxidation model was adopted to substitute the default model implemented by the user‐defined functions to calculate the NO x emission. The influences of the boiler load, over‐fire air (OFA) ratio, and excess air coefficient on temperature, species, and heat flux distributions were investigated. Results show that the decrement of the boiler load from boiler maximum continuous rating to 50% turbine heat acceptance gives rise to an increase of NO x emission. The heat flux distributions along with the furnace width direction present bell shaped. When the OFA ratio rises from 17% to 43%, NO x emission descends from 357.7 to 179.3 mg m −3 at the furnace outlet, and the heat flux distributions become more uniform along with the furnace width direction with lower peaks. Temperatures, species, and heat flux distributions are similar under the three different excess air coefficients. The NO x emission is the lowest when the excess air coefficient is 1.15. The results could provide a reference for combustion characteristics optimization and hydrodynamic calculation of ultra‐supercritical double‐reheat tower‐type boiler.
T2  - Asia-Pacific Journal of Chemical Engineering
T1  - Numerical study on combustion characteristics and heat flux distributions of 660‐MW ultra‐supercritical double‐reheat tower‐type boiler
VL  - 16
IS  - 3
SP  - e2631
DO  - 10.1002/apj.2631
ER  - 

@article{
author = "Deng, Lei and Zhang, Yan and Ma, Shihao and Zhu, Zhengrong and Liu, Hu and Belošević, Srđan and Tomanović, Ivan and Che, Defu",
year = "2021",
abstract = "Ultra‐supercritical double‐reheat technology, as one of the most advanced coal‐fired power generation technology, is an important direction for emission reduction and energy saving in the world. In this study, the numerical calculation was executed in a 660‐MW ultra‐supercritical double‐reheat tower‐type boiler under deep‐air‐staging conditions. The refined HCN oxidation model was adopted to substitute the default model implemented by the user‐defined functions to calculate the NO x emission. The influences of the boiler load, over‐fire air (OFA) ratio, and excess air coefficient on temperature, species, and heat flux distributions were investigated. Results show that the decrement of the boiler load from boiler maximum continuous rating to 50% turbine heat acceptance gives rise to an increase of NO x emission. The heat flux distributions along with the furnace width direction present bell shaped. When the OFA ratio rises from 17% to 43%, NO x emission descends from 357.7 to 179.3 mg m −3 at the furnace outlet, and the heat flux distributions become more uniform along with the furnace width direction with lower peaks. Temperatures, species, and heat flux distributions are similar under the three different excess air coefficients. The NO x emission is the lowest when the excess air coefficient is 1.15. The results could provide a reference for combustion characteristics optimization and hydrodynamic calculation of ultra‐supercritical double‐reheat tower‐type boiler.",
journal = "Asia-Pacific Journal of Chemical Engineering",
title = "Numerical study on combustion characteristics and heat flux distributions of 660‐MW ultra‐supercritical double‐reheat tower‐type boiler",
volume = "16",
number = "3",
pages = "e2631",
doi = "10.1002/apj.2631"
}

Deng, L., Zhang, Y., Ma, S., Zhu, Z., Liu, H., Belošević, S., Tomanović, I.,& Che, D.. (2021). Numerical study on combustion characteristics and heat flux distributions of 660‐MW ultra‐supercritical double‐reheat tower‐type boiler. in Asia-Pacific Journal of Chemical Engineering, 16(3), e2631.
https://doi.org/10.1002/apj.2631

Deng L, Zhang Y, Ma S, Zhu Z, Liu H, Belošević S, Tomanović I, Che D. Numerical study on combustion characteristics and heat flux distributions of 660‐MW ultra‐supercritical double‐reheat tower‐type boiler. in Asia-Pacific Journal of Chemical Engineering. 2021;16(3):e2631.
doi:10.1002/apj.2631 .

Deng, Lei, Zhang, Yan, Ma, Shihao, Zhu, Zhengrong, Liu, Hu, Belošević, Srđan, Tomanović, Ivan, Che, Defu, "Numerical study on combustion characteristics and heat flux distributions of 660‐MW ultra‐supercritical double‐reheat tower‐type boiler" in Asia-Pacific Journal of Chemical Engineering, 16, no. 3 (2021):e2631,
https://doi.org/10.1002/apj.2631 . .