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Cai W, Wang W, Zheng Z, Zhang J, Cao H, Huang J, Zhang B, Lai Y. Structural transformation and performance analysis of PPS-based bag filters in coal-fired power plants. HIGH PERFORM POLYM 2023. [DOI: 10.1177/09540083231162511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Owing to the complicated environments, the service life of bag-filter or electrostatic-bag composite precipitators with polyphenylene sulfide (PPS) is greatly deviated from the ideal time. In this paper, the structural transformation of PPS-based bag filter materials collected from the coal-fired power plants with different loading units were investigated systematically. As the SO2 content increases, the surface evolution of PPS fibers from smoothness to crack occurs. An opposite trend is observed for melting point and cross breaking strength. The major reason for the failure of PPS-based bag filters is that working temperature (T) often passes through acid dew gas point (Ta), and the SO3 would be produced during the condensing of H2SO4 when T is lower than Ta. The SO3 with strong oxidation would attack the weak C-S bonds of PPS, resulting in the oxidation or even sulfonation of PPS-based bag filters. This work discloses the actual structural evolution of PPS and some corresponding rules under the complicated corrosive gases with high temperatures, which provides a guidance for prolonging the service life of PPS-based bag filters during the usage of coal-fired power plants.
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Affiliation(s)
- Weilong Cai
- Qingyuan Innovation Laboratory, Quanzhou, China
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Wei Wang
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Zhihong Zheng
- College of Materials, Xiamen University, Xiamen, China
| | - Jingyun Zhang
- Xiamen Savings Environmental Co., Ltd., Xiamen, China
| | - Hong Cao
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Jianying Huang
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Bing Zhang
- Qingyuan Innovation Laboratory, Quanzhou, China
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
| | - Yuekun Lai
- Qingyuan Innovation Laboratory, Quanzhou, China
- College of Chemical Engineering, Fuzhou University, Fuzhou, China
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Yan P, Peng W, Yang F, Cao Y, Xiang M, Wu T, Fu Q. Investigation on thermal degradation mechanism of poly(phenylene sulfide). Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.109863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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