Feasibility Study of Co-Firing of Torrefied Empty Fruit Bunch and Coal through Boiler Simulation
Torrefied empty fruit bunch (EFB) co-firing is a promising technology to reduce emissions from coal-fired power plants. However, co-firing can influence the combustion and heat transfer characteristics in a coal boiler. In order to study the feasibility of co-firing application of torrefied EFB (T-E...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/12/3051 |
| _version_ | 1827715144636956672 |
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| author | Yu Jiang Kyeong-Hoon Park Chung-Hwan Jeon |
| author_facet | Yu Jiang Kyeong-Hoon Park Chung-Hwan Jeon |
| author_sort | Yu Jiang |
| collection | DOAJ |
| description | Torrefied empty fruit bunch (EFB) co-firing is a promising technology to reduce emissions from coal-fired power plants. However, co-firing can influence the combustion and heat transfer characteristics in a coal boiler. In order to study the feasibility of co-firing application of torrefied EFB (T-EFB) in boilers, the combustion characteristics, gas emissions and heat flux distribution were analyzed, respectively. First, the kinetic parameters of T-EFB devolatilization and char oxidation were obtained by experimental analysis. Second, the computational fluid dynamics (CFD) analysis was applied to the actual 500 MWe boiler simulation to further evaluate the differences in the co-firing performance parameters (combustion characteristics and emissions) of the T-EFB and the heat transfer characteristics within the boiler. Numerical results show that T-EFB co-firing can improve the ignition characteristics of pulverized coal, reduce the formation of unburned particles. When the blending ratio was increased from 10% to 50%, significantly NO<sub>x</sub> (oxides of nitrogen) reduction (levels from 170 to 98 ppm at 6% O<sub>2</sub>) was achieved. At a blending ratio above 40%, boiler combustion efficiency decreases as the total heat flux of the boiler decreases due to an increase in the amount of unburned carbon. In addition, T-EFB co-firing can affect the heat transfer characteristics of the boiler. |
| first_indexed | 2024-03-10T19:13:20Z |
| format | Article |
| id | doaj.art-b52e7709c3064ebc920b9cc696d9cbcd |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T19:13:20Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b52e7709c3064ebc920b9cc696d9cbcd2023-11-20T03:40:34ZengMDPI AGEnergies1996-10732020-06-011312305110.3390/en13123051Feasibility Study of Co-Firing of Torrefied Empty Fruit Bunch and Coal through Boiler SimulationYu Jiang0Kyeong-Hoon Park1Chung-Hwan Jeon2School of Mechanical Engineering, Pusan National University, Busan 46241, KoreaSchool of Mechanical Engineering, Pusan National University, Busan 46241, KoreaSchool of Mechanical Engineering, Pusan National University, Busan 46241, KoreaTorrefied empty fruit bunch (EFB) co-firing is a promising technology to reduce emissions from coal-fired power plants. However, co-firing can influence the combustion and heat transfer characteristics in a coal boiler. In order to study the feasibility of co-firing application of torrefied EFB (T-EFB) in boilers, the combustion characteristics, gas emissions and heat flux distribution were analyzed, respectively. First, the kinetic parameters of T-EFB devolatilization and char oxidation were obtained by experimental analysis. Second, the computational fluid dynamics (CFD) analysis was applied to the actual 500 MWe boiler simulation to further evaluate the differences in the co-firing performance parameters (combustion characteristics and emissions) of the T-EFB and the heat transfer characteristics within the boiler. Numerical results show that T-EFB co-firing can improve the ignition characteristics of pulverized coal, reduce the formation of unburned particles. When the blending ratio was increased from 10% to 50%, significantly NO<sub>x</sub> (oxides of nitrogen) reduction (levels from 170 to 98 ppm at 6% O<sub>2</sub>) was achieved. At a blending ratio above 40%, boiler combustion efficiency decreases as the total heat flux of the boiler decreases due to an increase in the amount of unburned carbon. In addition, T-EFB co-firing can affect the heat transfer characteristics of the boiler.https://www.mdpi.com/1996-1073/13/12/3051torrefactionempty fruit bunchco-firingsimulationexhaust gas emissiontangential firing boiler |
| spellingShingle | Yu Jiang Kyeong-Hoon Park Chung-Hwan Jeon Feasibility Study of Co-Firing of Torrefied Empty Fruit Bunch and Coal through Boiler Simulation Energies torrefaction empty fruit bunch co-firing simulation exhaust gas emission tangential firing boiler |
| title | Feasibility Study of Co-Firing of Torrefied Empty Fruit Bunch and Coal through Boiler Simulation |
| title_full | Feasibility Study of Co-Firing of Torrefied Empty Fruit Bunch and Coal through Boiler Simulation |
| title_fullStr | Feasibility Study of Co-Firing of Torrefied Empty Fruit Bunch and Coal through Boiler Simulation |
| title_full_unstemmed | Feasibility Study of Co-Firing of Torrefied Empty Fruit Bunch and Coal through Boiler Simulation |
| title_short | Feasibility Study of Co-Firing of Torrefied Empty Fruit Bunch and Coal through Boiler Simulation |
| title_sort | feasibility study of co firing of torrefied empty fruit bunch and coal through boiler simulation |
| topic | torrefaction empty fruit bunch co-firing simulation exhaust gas emission tangential firing boiler |
| url | https://www.mdpi.com/1996-1073/13/12/3051 |
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