Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application
In response to the issues of large production volume, complex composition, and difficulties in the disposal of oily sludge in China, this paper presents a novel technical approach that involves blending and burning oily sludge in large coal-fired boilers. First, a numerical simulation was conducted...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Energy Environmental Protection
2024-12-01
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| Series: | 能源环境保护 |
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| Online Access: | https://doi.org/10.20078/j.eep.20240305 |
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| author | Yongping GU Jianbo WU Fanzhi ZHANG Haidan ZHANG Hui ZHANG Guangxue ZHANG |
| author_facet | Yongping GU Jianbo WU Fanzhi ZHANG Haidan ZHANG Hui ZHANG Guangxue ZHANG |
| author_sort | Yongping GU |
| collection | DOAJ |
| description | In response to the issues of large production volume, complex composition, and difficulties in the disposal of oily sludge in China, this paper presents a novel technical approach that involves blending and burning oily sludge in large coal-fired boilers. First, a numerical simulation was conducted to evaluate the co-burning scheme of oily sludge. The results showed that blending did not significantly alter the temperature field distribution within the boiler, except for a slight increase observed in the main combustion zone. When a portion of the fuel was replaced with oily sludge instead of pulverized coal, the combustion temperature in the main zone rose due to the fast ignition and high combustion completeness of oily sludge, resulting in a reduction of nitrogen oxides (NOx) emissions. Additionally, burning oily sludge led to a decrease in the carbon content of the fly ash, thereby improving boiler efficiency. Secondly, this technical approach was implemented in practice on a 330 MW boiler. The measurement results demonstrated that under a 120 MW load, the blending and burning of sludge reduced the NOx emission value from 425 mg/Nm3 to 376 mg/Nm3 and increased boiler efficiency from 91.90% to 92.13%. Therefore, the blending approach offers significant economic and environmental benefits and promising prospects for widespread applications. |
| format | Article |
| id | doaj-art-fb489698893b467eb83f44c8306f2278 |
| institution | OA Journals |
| issn | 2097-4183 |
| language | zho |
| publishDate | 2024-12-01 |
| publisher | Editorial Office of Energy Environmental Protection |
| record_format | Article |
| series | 能源环境保护 |
| spelling | doaj-art-fb489698893b467eb83f44c8306f22782025-08-20T01:58:51ZzhoEditorial Office of Energy Environmental Protection能源环境保护2097-41832024-12-0138613213810.20078/j.eep.202403052024-6-guyongpingNumerical simulation of oily sludge blending in large coal-fired boilers and its engineering applicationYongping GU0Jianbo WU1Fanzhi ZHANG2Haidan ZHANG3Hui ZHANG4Guangxue ZHANG5Taizhou Power Plant of Zhejiang Zheneng Power Co., Ltd., Taizhou 318016, ChinaZhejiang Energy Group R & D, Hangzhou 311121, ChinaTaizhou Power Plant of Zhejiang Zheneng Power Co., Ltd., Taizhou 318016, ChinaZhejiang Energy Group R & D, Hangzhou 311121, ChinaTaizhou Power Plant of Zhejiang Zheneng Power Co., Ltd., Taizhou 318016, ChinaInstitute of Energy Engineering, China Jiliang University, Hangzhou 310018, ChinaIn response to the issues of large production volume, complex composition, and difficulties in the disposal of oily sludge in China, this paper presents a novel technical approach that involves blending and burning oily sludge in large coal-fired boilers. First, a numerical simulation was conducted to evaluate the co-burning scheme of oily sludge. The results showed that blending did not significantly alter the temperature field distribution within the boiler, except for a slight increase observed in the main combustion zone. When a portion of the fuel was replaced with oily sludge instead of pulverized coal, the combustion temperature in the main zone rose due to the fast ignition and high combustion completeness of oily sludge, resulting in a reduction of nitrogen oxides (NOx) emissions. Additionally, burning oily sludge led to a decrease in the carbon content of the fly ash, thereby improving boiler efficiency. Secondly, this technical approach was implemented in practice on a 330 MW boiler. The measurement results demonstrated that under a 120 MW load, the blending and burning of sludge reduced the NOx emission value from 425 mg/Nm3 to 376 mg/Nm3 and increased boiler efficiency from 91.90% to 92.13%. Therefore, the blending approach offers significant economic and environmental benefits and promising prospects for widespread applications.https://doi.org/10.20078/j.eep.20240305oily sludgecoal-fired boilerco-blendingnumerical simulationengineering application |
| spellingShingle | Yongping GU Jianbo WU Fanzhi ZHANG Haidan ZHANG Hui ZHANG Guangxue ZHANG Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application 能源环境保护 oily sludge coal-fired boiler co-blending numerical simulation engineering application |
| title | Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application |
| title_full | Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application |
| title_fullStr | Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application |
| title_full_unstemmed | Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application |
| title_short | Numerical simulation of oily sludge blending in large coal-fired boilers and its engineering application |
| title_sort | numerical simulation of oily sludge blending in large coal fired boilers and its engineering application |
| topic | oily sludge coal-fired boiler co-blending numerical simulation engineering application |
| url | https://doi.org/10.20078/j.eep.20240305 |
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