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2024 Vol.29, Issue 4

Research Article

Carbon-free Energy Transition in Thermal Power Plant:Ammonia Injection Strategies Analysis in Boiler Simulator

화력발전 무탄소 에너지 전환을 위한보일러 모사 장치에서 암모니아 주입 전략 연구

Sang-Hwa Song1
,
Ji-Hwan Lee1
,
Hyeong-Bin Moon1
,
Seung-Mo Kim2
,
Gyeong-Min Kim12
,
Chung-Hwan Jeon12†
송 상화1
,
이 지환1
,
문 형빈1
,
김 승모2
,
김 경민12
,
전 충환12†
1School of Mechanical Engineering, Pusan National University,
2Pusan Clean Energy Research Institute (PCERI)
1부산대학교 기계공학부
2부산대학교 청정화력발전에너지연구소
*Corresponding Author
31 December 2024. pp. 1-11
PDF XML Citation
Abstract

The International Energy Agency(IEA) predicts that by 2050, hydrogen and ammonia will account for approximately 19% of the global energy demand. Ammonia, with a high hydrogen content and a higher boiling point than hydrogen, presents itself as a favorable energy storage medium. This study investigates the effects of ammonia injection position and coal grade on combustion characteristics and emissions in coal-fired power plants as part of the transition towards carbon neutrality. ADTF(Ammonia Drop Tube Furnace) experiments were conducted to assess NOx, CO2, N2O, and NH3 slip emissions under low-load conditions. The findings from ADTF experiments indicate that ammonia injection position significantly impacts combustion characteristics and emissions. Coal B, a lower grade coal with high volatile matter, exhibited better combustion characteristics and lower UBC emissions compared to Coal A. NOx emissions were influenced by the ammonia injection position, with a low injection position leading to NOx reduction due to the effect of ammonia as a reducing agent in the combustion environment. Mixed coal showed trends similar to Coal A, but it could serve as a solution for utilizing high-grade coal and exhibited better emission levels in some aspects compared to single coal cases. So, underscores the potential of ammonia-coal co-firing in achieving significant emission reductions and enhancing the combustion efficiency of coal-fired boilers.

Keywords
Ammonia
Co-firing
Carbon-free fuel
Fuel injection position
References
1

International Energy Agency. Net Zero by 2050. 2021: Paris.

2

Y. Luo, S. Liao, S. Chen, H. Fang, F. Zhong, Optimized coupling of ammonia decomposition and electrochemical oxidation in a tubular direct ammonia solid oxide fuel cell for high-efficiency power generation, Applied Energy, 307 (2022) 118158.

10.1016/j.apenergy.2021.118158
3

Z. Wang, Z. Jia, C. Zhao, Y. Xiao, Effect of ammonia on the characteristics of coal combustion, J. Energy Inst., 109 (2023) 101275.

10.1016/j.joei.2023.101275
4

A. Valera-Medina, H. Xiao, M. Owen-Jones, W.I.F. David, P.J. Bowen, Ammonia for power, Prog. Energy Combust. Sci., 69 (2018) 63-102.

10.1016/j.pecs.2018.07.001
5

A. Valera-Medina, F. Amer-Hatem, A.K. Azad, I.C. Dedoussi, M.D.e. Joannon, Review on ammonia as a potential fuel: from synthesis to economics, Energy & Fuels, 35 (2021) 6964-7029.

10.1021/acs.energyfuels.0c03685
6

O. Herbinet, P. Bartocci, AG Dana, On the use of ammonia as a fuel-A perspective, Fuel Communications, 11 (2022) 100064.

10.1016/j.jfueco.2022.100064
7

L. Kang, W. Pan, J. Zhang, W. Wang, C. Tang, A review on ammonia blends combustion for industrial applications, Fuel, 332 (2023) 126150.

10.1016/j.fuel.2022.126150
8

S.J. Kim, S.J. Park, S.H. Jo, H. Lee, S.J. Yoon, J.H. Moon, H.W. Ra, S.M. Yoon, J.G. Lee, T.Y. Mun, Effects of ammonia co-firing ratios and injection positions in the coal-ammonia co-firing process in a circulating fluidized bed combustion test rig, Energy, 282 (2023) 128953.

10.1016/j.energy.2023.128953
9

Y. Sun, Z. Li, Q. Wang, J. Zhang, H. Kong, Low carbon pathway and life cycle assessment of ammonia co-firing in coal power plants under the context of carbon neutrality, Energy Convers. Manag., 296 (2023) 117648.

10.1016/j.enconman.2023.117648
10

Y. Jiang, B.H. Lee, D.H. Oh, C.H. Jeon, Influence of various air-staging on combustion and NOX emission characteristics in a tangentially fired boiler under the 50% load condition, Energy, 244 (2022) 123167

10.1016/j.energy.2022.123167
11

G. Chen, Z. Li, H. Zhang, L. Huang, Z. Liu, W. Fan, Influences of ultra-low load operation strategies on performance of a 300 MW subcritical bituminous coal boiler, Appl. Therm. Eng., 256 (2024) 124037

10.1016/j.applthermaleng.2024.124037
12

S. Wang, A.M. Elbaz, O.Z. Arab, W.L. Roberts, Turbulent flame speed measurement of NH3/H2/air and CH4/air flames and a numerical case study of NO emission in a constant volume combustion chamber (C.V.C.C.), Fuel, 332 (2023) 126152.

10.1016/j.fuel.2022.126152
13

L. Liu, F. Tan, Z. Wu, Y. Wang, H. Liu, Comparison of the combustion and emission characteristics of NH3/NH4NO2 and NH3/H2 in a two-stroke low speed marine engine, Int. J. Hydrogen Energy, 47 (2022) 17778-87.

10.1016/j.ijhydene.2022.03.239
14

L. Chen, C. Wang, W. Wang, Effect of ammonia co-firing on heat transfer, safety, and economy of coal-fired boilers, Fuel, 334 (2023) 126649

10.1016/j.fuel.2022.126649
15

Q. Lyu, R. Wang, Y. Du, Y. Liu, Numerical study on coal/ammonia co-firing in a 600 MW utility boiler, Int. J. Hydrogen Energy, 48 (2023) 17293-310.

10.1016/j.ijhydene.2023.01.232
16

B.H. Lee, Y.H. Bae, S.H. Cho, G.M. Kim, C.H. Jeon, Comprehensive technical review for fundamental characteristics and application of NH3 co-firing with coal, Chem. Eng. J., 474 (2023) 145587

10.1016/j.cej.2023.145587
17

X. Zhang, S.P. Moosakutty, R.P. Rajan, M. Younes, S.M. Sarathy, Combustion chemistry of ammonia/ hydrogen mixtures: Jet-stirred reactor measurements and comprehensive kinetic modeling, Combust. Flame, 234 (2021) 111653.

10.1016/j.combustflame.2021.111653
18

D. Hong, L. Yuan, C. Wang, The Influence of NH3 on Coal Combustion Kinetics during Coal/NH3 Cocombustion: Experiments and ReaxFF MD Simulations, Energy & Fuels, 38 (2024) 9120-9129.

10.1021/acs.energyfuels.4c01182
19

K Hadi, R Ichimura, G Hashimoto, Y Xia, N Hashimoto, O Fujita, Effect of fuel ratio of coal on the turbulent flame speed of ammonia/coal particle cloud co-combustion at atmospheric pressure, Proc. Combust. Inst., 38 (2021) 4131-4139.

10.1016/j.proci.2020.06.358
20

J. Tan, Y. He, R. Zhu, Y. Zhu, Z. Wang, Experimental study on co-firing characteristics of ammonia with pulverized coal in a staged combustion drop tube furnace, Proc. Combust. Inst., 39 (2023) 3217- 3225.

10.1016/j.proci.2022.07.032
21

B.H. Lee, L. Shagdarsuren, C.H. Jeon, Impact of Pulverized Coal Particle Sizes on Combustibility and NOx Emission in Different Blending Methods, Energy & Fuels, 33 (2021) 12814-12821.

10.1021/acs.energyfuels.9b03164
22

G.T. Marangwanda, D.M. Madyira, P.G. Ndungu, Combustion Characterisation of Bituminous Coal and Pinus Sawdust Blends by Use of Thermo- Gravimetric Analysis, Energies, 14(22) (2021) 7457.

10.3390/en14227547
23

B.H. Lee, L. Sh, D.G. Lee, C.H. Jeon, Effect of torrefaction and ashless process on combustion and NOx emission behaviors of woody and herbaceous biomass, Biomass and Bioenergy, 151 (2021) 106133.

10.1016/j.biombioe.2021.106133
24

R. Zhao, J. Qin, T. Chen, J. Wu, TG-FTIR study on co-combustion of bituminous coal semicoke and lignite, J. Therm. Anal. Calorim., 147 (2022) 1849- 1858.

10.1007/s10973-020-10405-7
25

W.H. Chen, S.W. Du, C.H. Tsai, Z.Y. Wang, Torrefied biomasses in a drop tube furnace to evaluate their utility in blast furnaces, Bioresour. Technol., 111 (2012) 433-438.

10.1016/j.biortech.2012.01.16322386202
26

G.B. Chen, J.W. Li, H.T. Lin, F.H. Wu, Y.C. Chao, A Study of the Production and Combustion Characteristics of Pyrolytic Oil from Sewage Sludge Using the Taguchi Method, Energies, 11(9) (2018) 2260.

10.3390/en11092260
27

Y. Lin, X. Ma, X. Ning, Z. Yu, TGA-FTIR analysis of co-combustion characteristics of paper sludge and oil-palm solid wastes, Energy Convers. Manag., 89 (2015) 727-734.

10.1016/j.enconman.2014.10.042
28

J.H. Lee, D.G. Lee, G.M. Kim, B.H. Lee, C.H. Jeon, Prediction of unburned carbon and NOx emissions of solid fuel using petrographic UBC index and artificial neural network, Fuel, 374 (2024) 132490.

10.1016/j.fuel.2024.132490
29

C. Chen, Z. Wang, R. Zhu, J. Tan, Y. He, K. Cen, Co-firing characteristics and fuel-N transformation of ammonia/pulverized coal binary fuel, Fuel, 337 (2023) 126857.

10.1016/j.fuel.2022.126857
30

J. Dai, S. Sokhansanj, J.R. Grace, Overview and some issues related to co-firing biomass and coal, Can. J. Chem. Eng., 86 (2008) 367-386.

10.1002/cjce.20052
31

V. Pattabathula, J. Richardson, Introduction to ammonia production, Chem. Eng. Prog., 112 (2016) 69-75.

32

H. Lee, M.J. Lee, Recent advances in ammonia combustion technology in thermal power generation system for carbon emission reduction, Energies, 14(18) (2021) 5604.

10.3390/en14185604
33

E.C. Okafor, M. Tsukamoto, A. Hayakawa, K.D.K.A. Somarathne, T. Kudo, Influence of wall heat loss on the emission characteristics of premixed ammonia- air swirling flames interacting with the combustor wall, Proc. Combust. Inst., 38 (2021) 5139-5146.

10.1016/j.proci.2020.06.142
34

T. Shimizu, M. Toyono, Emissions of NOx and N2O during co-combustion of dried sewage sludge with coal in a circulating fluidized bed combustor, Fuel, 86 (2007) 2308-2315.

10.1016/j.fuel.2007.01.033
Information
  • Publisher :The Korean Society of Combustion
  • Publisher(Ko) :한국연소학회
  • Journal Title :Journal of the Korean Society of Combustion
  • Journal Title(Ko) :한국연소학회지
  • Volume : 29
  • No :4
  • Pages :1-11
  • Received Date : 2024-07-26
  • Revised Date : 2024-10-23
  • Accepted Date : 2024-10-23
  • DOI :https://doi.org/10.15231/jksc.2024.29.4.001
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