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Optimization of design and operation of the CFB desulfurization process for ultra-low emission

Received Date:2022-08-01

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    Abstract:A lithium salt rotary kiln plant adopts CFB semi-dry desulfurization technology. Due to the large fluctuation of SO2 con... Open+
    Abstract:

    A lithium salt rotary kiln plant adopts CFB semi-dry desulfurization technology. Due to the large fluctuation of SO2 concentration at different mineral aggregate inlets (500~4 000 mg/Nm3), the bed operates unstably at the beginning, and the hourly mean concentration of SO2 at the outlet fluctuates between 20 and 500 mg/Nm3. In the optimized design, the operation stability of the system was improved by adjusting the deflector, venturi, return inlet and spray gun. The operation results showed that when the inlet gas contained medium or high concentration of SO2, the hourly mean concentration of SO2 at the outlet was (20±5) mg/Nm3, which met the local standards for ultra-low emission (hourly mean concentration of SO2≤35 mg/Nm3) .

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    Authors:

    • YANG Senlin1,2
    • WU Bin1
    • HUANG Peng1
    • WEI Wenzhu1
    • FU Mingli2

    Units

    • 1.Guangdong J Tech Environment Science Co., Ltd., Guangzhou 510663, China,
    • 2.School of Environment and Energy, South China University of Technology, Guangzhou 510006, China

    Keywords

    • Circulating fluidized bed
    • Semi dry desulfurization
    • CFB
    • SO2
    • Ultra low emission
    • Calcium sulfur ratio

    Citation

    YANG Senlin, WU Bin, HUANG Peng, et al. Optimization of design and operation of the CFB desulfurization process for ultra-low emission[J]. Energy Environmental Protection, 2022, 36(6): 110-117.

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