Computational Analysis of Tube Wall Temperature of Superheater in 1000 MW Ultra-Supercritical Boiler Based on the Inlet Thermal Deviation

Pei Li, Ting Bao (), Jian Guan, Zifu Shi, Zengxiao Xie, Yonggang Zhou and Wei Zhong
Additional contact information
Pei Li: Institute of Thermal Science and Power Systems, Zhejiang University, Hangzhou 310027, China
Ting Bao: Zhejiang Provincial Key Laboratory of Energy Conservation & Pollutant Control Technology for Thermal Power, Zhejiang Zheneng Technology Research Institute Co., Ltd., Hangzhou 311121, China
Jian Guan: Zhejiang Province Energy Group Co., Ltd., Hangzhou 310007, China
Zifu Shi: State Key Laboratory of Clean Energy Utilization, Institute of Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China
Zengxiao Xie: Zhejiang Zheneng Zhongmei Zhoushan Coal & Electricity Co., Ltd., Zhoushan 316131, China
Yonggang Zhou: State Key Laboratory of Clean Energy Utilization, Institute of Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China
Wei Zhong: Institute of Thermal Science and Power Systems, Zhejiang University, Hangzhou 310027, China

Energies, 2023, vol. 16, issue 3, 1-15

Abstract: Local over-temperature is one of the main reasons for boiler tube failures (BTF). By accurately monitoring and controlling tube wall temperature, local over-temperature can be avoided. Based on the measured flue gas parameters and numerical simulation, a method of thermal deviation calculation is proposed in this study for the on-line calculation of the tube wall temperature of boiler superheaters. The full-size three-dimensional numerical simulation was presented on the combustion in a pulverized coal-fired boiler of 1000 MW ultra-supercritical (USC) unit. A difference in the thermal deviation of the vertical direction was innovatively introduced into a segmented discrete model, and the thermal deviation condition conforming to reality was introduced into the calculation. An on-line calculation system developed based on the current calculation method was applied in a 1000 MW USC unit. The calculated local high-temperature zone was consistent with the actual over-temperature position and conformed to the law of the allowable metal temperature of the final superheater (FSH) serpentines segment. The comparison results showed that the calculated data by this method were more reflective of tube wall temperature change with boiler loads than the measured data. According to the calculated local over-temperature zone, the immediate warning response can effectively reduce the possibility of over-temperature BTF.

Keywords: ultra-supercritical boiler; final superheater; numerical simulation; tube wall temperature calculation; thermal deviation condition (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/16/3/1539/pdf (application/pdf)
https://www.mdpi.com/1996-1073/16/3/1539/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:16:y:2023:i:3:p:1539-:d:1057317

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().