Energy Consumption Analysis of Desulphurization Ultra-low Emission Operation and Outlook on Its Energy-saving Operation in Thermal Power Plants

doi:10.12096/j.2096-4528.pgt.20040

Abstract

Abstract:

Operation energy consumption of flue gas desulfurization (FGD) increases greatly after finishing ultra-low emission retrofit, the average power consumption rate is 1.40%, which is equivalent to power supply coal consumption of about 4.4 g/(kW·h). With the increase of thermal power plants' operation pressure, ultra-low emission operation should consider both energy saving and pollution reducing. Taking 33 600 MW-level units using single-tower or double-tower FGD process as the research object, operation energy consumption was analyzed considering both power consumption rate and power consumption per unit of FGD. Meanwhile, the influencing factors of operation energy consumption were emphatically analyzed. Finally, outlook on operation energy saving work of FGD was proposed, considering measures including energy efficiency benchmarking management, operational optimization of FGD, energy-saving retrofit of key devices, quality control of slurry, detailed maintenance work and rational use of desulfurization additives.

Key words: power consumption rate of flue gas desulfurization (FGD), power consumption per unit, energy efficiency benchmarking, operational optimization

CLC Number:

TK16

Guohua QIU,Hongge WEI,Xiujin LIANG,Zhuang LI,Fengji WANG,Yue ZHU. Energy Consumption Analysis of Desulphurization Ultra-low Emission Operation and Outlook on Its Energy-saving Operation in Thermal Power Plants[J]. Power Generation Technology, 2020, 41(5): 510-516.

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