Technical Economic Analysis and Optimization of Two-Stage Desulfurization System for CFB Boiler

doi:10.3969/j.issn.1000-7229.2015.06.018

Abstract

Abstract:

To reduce the emissions of SO₂ from the circulating fluidized bed (CFB) boiler to meet the increasingly stringent emission standards, this paper focused on the two-stage desulfurization system including the limestone desulfurization in the furnace of CFB boiler and the wet limestone-gypsum flue gas desulfurization (FGD). Relying on the investment equipment and operating costs in a 300 MW CFB unit with two-stage desulfurization system, this paper analyzed the impact of SO₂emission limits, sulfur content in coal, unit load, initial investment in desulfurization equipment and annual effective performance time on the economy of CFB-FGD two-stage intensified desulfurization system, finally obtained a reasonable scheme of desulfurization share.

Key words: circulating fluidized bed(CFB) boiler, two-stage intensified desulfurization, desulfurization share, furnace desulfurization, flue gas desulfurization

CLC Number:

ZHU Yunfei， YAN Weiping， WANG Yupeng， ZHANG Xiaoling， MA Fei. Technical Economic Analysis and Optimization of Two-Stage Desulfurization System for CFB Boiler[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(6): 109-113.

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