PERFORMANCE OF ATOMIZED SPRAYING SUSPENDED DESULFURIZATION OF FLY ASH IN CFB BOILER

LIU Chuanliang

doi:DOI:10.13205/j.hjgc.202207012

Volume 40 Issue 7

Sep. 2022

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LIU Chuanliang. PERFORMANCE OF ATOMIZED SPRAYING SUSPENDED DESULFURIZATION OF FLY ASH IN CFB BOILER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 81-87. doi: DOI:10.13205/j.hjgc.202207012

Citation:

LIU Chuanliang. PERFORMANCE OF ATOMIZED SPRAYING SUSPENDED DESULFURIZATION OF FLY ASH IN CFB BOILER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 81-87. doi: DOI:10.13205/j.hjgc.202207012

LIU Chuanliang. PERFORMANCE OF ATOMIZED SPRAYING SUSPENDED DESULFURIZATION OF FLY ASH IN CFB BOILER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 81-87. doi: DOI:10.13205/j.hjgc.202207012

Citation:

LIU Chuanliang. PERFORMANCE OF ATOMIZED SPRAYING SUSPENDED DESULFURIZATION OF FLY ASH IN CFB BOILER[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(7): 81-87. doi: DOI:10.13205/j.hjgc.202207012

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PERFORMANCE OF ATOMIZED SPRAYING SUSPENDED DESULFURIZATION OF FLY ASH IN CFB BOILER

doi: DOI:10.13205/j.hjgc.202207012

LIU Chuanliang

Shanghai Power Equipment Research Institute Co., Ltd, Shanghai 200240, China

Received Date: 2021-11-21
Available Online: 2022-09-02

Abstract

Abstract

Using the atomized spraying of humidification method to hydrate the calcium-based fly ash of the circulating fluidized bed (CFB),the performance of fly ash suspended desulfurization was experimentally studied under different conditions.The results showed that the hydrated fly ash had a good desulfurization capability at low temperature,which could be divided into two reaction stages,fast and slow phase,and enhanced the efficiency of total calcium utilization from an initial value of 41% to around 70%.The particle humidification effect and the reaction temperature were the main factors affecting the desulphurization ability.The atomization water-drop size closed to 50 μm and the staged spray-water method made a better humidification effect,and extended the duration of fast reaction to make the reaction more complete.The reaction temperature had two side functions of promotion and inhibition to the humidification and desulfurization,and the optimum temperature was around 80℃.The SO₂ concentration was not remarkable to the desulphurization.After fly ash activated by atomized water spray,the microstructure on the particle surface was promoted with increased pores and cracks which would contribute to the gas-solid transfer and desulfurization reaction.
- desulphurization,
- calcium-based sorbent,
- fly ash,
- atomized water spray,
- hydration,
- circulating fluidized bed

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References(23)

References

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