Experimental study and safety analysis on the heating surfaces in the 660 MW supercritical CFB boiler under sudden electricity failure
Abstract The necessity of equipping with an emergency water supply system in a supercritical circulating fluidized bed (CFB) boiler has long been a controversial topic in the industry. In this study, the heating surface of a 660 MW supercritical CFB boiler at the Pingshuo Power Station of China Coal...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-07-01
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| Series: | Energy Science & Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ese3.1118 |
| _version_ | 1818002515152601088 |
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| author | Yinlong Li Beibei Xie Lingfeng Bi Haoyu Yang Chao Nie Hao Qing Dong Yang |
| author_facet | Yinlong Li Beibei Xie Lingfeng Bi Haoyu Yang Chao Nie Hao Qing Dong Yang |
| author_sort | Yinlong Li |
| collection | DOAJ |
| description | Abstract The necessity of equipping with an emergency water supply system in a supercritical circulating fluidized bed (CFB) boiler has long been a controversial topic in the industry. In this study, the heating surface of a 660 MW supercritical CFB boiler at the Pingshuo Power Station of China Coal Group is taken as the research object. And a boiler electricity failure experiment was accomplished at the power plant, and the variations of thermal parameters during electricity failure were obtained from power plant distributed control system. By analyzing the physical process of the heating surfaces during electricity failure, a mathematical model of heat transfer to the heating surface was established and a calculation program in Fortran language was developed. In this study, the effect of different flow rates and operating times of the supply pumps on the safety of the heating surfaces were then investigated. The numerical simulation results show that an emergency supply pump with a flow rate of 250 t/h, activated within 120 s, ensures the safety of the heating surface. The results of this study have important implications for the selection of emergency supply pumps and the determination of flow rates and pressures for supercritical CFB boilers with external beds. |
| first_indexed | 2024-04-14T03:47:55Z |
| format | Article |
| id | doaj.art-6400c86926b6479c9fdadb163e9bf66d |
| institution | Directory Open Access Journal |
| issn | 2050-0505 |
| language | English |
| last_indexed | 2024-04-14T03:47:55Z |
| publishDate | 2022-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Energy Science & Engineering |
| spelling | doaj.art-6400c86926b6479c9fdadb163e9bf66d2022-12-22T02:14:11ZengWileyEnergy Science & Engineering2050-05052022-07-011072088210510.1002/ese3.1118Experimental study and safety analysis on the heating surfaces in the 660 MW supercritical CFB boiler under sudden electricity failureYinlong Li0Beibei Xie1Lingfeng Bi2Haoyu Yang3Chao Nie4Hao Qing5Dong Yang6State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi ChinaDepartment of R&D Management Xi'an Thermal Power Research Institute Co. Ltd. Xi'an Shannxi ChinaState Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi ChinaState Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi ChinaState Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi ChinaState Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi ChinaState Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi ChinaAbstract The necessity of equipping with an emergency water supply system in a supercritical circulating fluidized bed (CFB) boiler has long been a controversial topic in the industry. In this study, the heating surface of a 660 MW supercritical CFB boiler at the Pingshuo Power Station of China Coal Group is taken as the research object. And a boiler electricity failure experiment was accomplished at the power plant, and the variations of thermal parameters during electricity failure were obtained from power plant distributed control system. By analyzing the physical process of the heating surfaces during electricity failure, a mathematical model of heat transfer to the heating surface was established and a calculation program in Fortran language was developed. In this study, the effect of different flow rates and operating times of the supply pumps on the safety of the heating surfaces were then investigated. The numerical simulation results show that an emergency supply pump with a flow rate of 250 t/h, activated within 120 s, ensures the safety of the heating surface. The results of this study have important implications for the selection of emergency supply pumps and the determination of flow rates and pressures for supercritical CFB boilers with external beds.https://doi.org/10.1002/ese3.1118electricity failureemergency water supply pumpexperimentheating surfacessafetysupercritical circulating fluidized bed boiler |
| spellingShingle | Yinlong Li Beibei Xie Lingfeng Bi Haoyu Yang Chao Nie Hao Qing Dong Yang Experimental study and safety analysis on the heating surfaces in the 660 MW supercritical CFB boiler under sudden electricity failure Energy Science & Engineering electricity failure emergency water supply pump experiment heating surfaces safety supercritical circulating fluidized bed boiler |
| title | Experimental study and safety analysis on the heating surfaces in the 660 MW supercritical CFB boiler under sudden electricity failure |
| title_full | Experimental study and safety analysis on the heating surfaces in the 660 MW supercritical CFB boiler under sudden electricity failure |
| title_fullStr | Experimental study and safety analysis on the heating surfaces in the 660 MW supercritical CFB boiler under sudden electricity failure |
| title_full_unstemmed | Experimental study and safety analysis on the heating surfaces in the 660 MW supercritical CFB boiler under sudden electricity failure |
| title_short | Experimental study and safety analysis on the heating surfaces in the 660 MW supercritical CFB boiler under sudden electricity failure |
| title_sort | experimental study and safety analysis on the heating surfaces in the 660 mw supercritical cfb boiler under sudden electricity failure |
| topic | electricity failure emergency water supply pump experiment heating surfaces safety supercritical circulating fluidized bed boiler |
| url | https://doi.org/10.1002/ese3.1118 |
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