A Pilot-scale Research on SO3 Control in Flue Gas of Coal Fired Power Plant
SO3 emission from coal fired power plant causes serious environment issues. In this paper, the generation and removal of SO3 in flue gas was investigated on a pilot-scale platform of multi-pollutant removal in a Beijing power plant where the Shenhua coal was combusted. The results showed that increa...
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| Main Author: | |
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| Format: | Article |
| Language: | zho |
| Published: |
State Grid Energy Research Institute
2022-07-01
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| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202109031 |
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| Summary: | SO3 emission from coal fired power plant causes serious environment issues. In this paper, the generation and removal of SO3 in flue gas was investigated on a pilot-scale platform of multi-pollutant removal in a Beijing power plant where the Shenhua coal was combusted. The results showed that increasing the inlet temperature of Selective Catalytic Reduction (SCR) reactor led to an increase in the conversion rate of SO2/SO3. The SO3 removal efficiency of low-low temperature electrostatic precipitator (LLT-ESP) decreases with the increase of inlet flue gas temperature. No obvious effect on improving the removal efficiency of SO3 with a further increase in the amount of the slurry of the wet flue gas desulfurization (WFGD) system. SO3 removal efficiency could be maintained in 75 % and 80 % when 3 circulating pumps was in operation and the inlet temperature of SCR and LLT-ESP were 290℃ and 130℃ respectively. Under this circumstance, the emission concentrations of NOx and SO2 were far below the ultra-low emission requirements. |
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| ISSN: | 1004-9649 |