[1] Zhao Changsui, Wang Wenxuan, Wang Fengjun, Chen Chuanmin, et al. SO2 emission characteristics from co-firingof petroleum coke and coal in circulating fluidized bed [J]. Journal of Southeast University (English Edition), 2005, 21 (1): 48-52. [doi:10.3969/j.issn.1003-7985.2005.01.011]

Copy

SO₂ emission characteristics from co-firingof petroleum coke and coal in circulating fluidized bed()

Share：

Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

21

Issue:

2005 1

Page:

48-52

Research Field:

Environmental Science and Engineering

Publishing date:

2005-03-30

Info

Title:

SO₂ emission characteristics from co-firingof petroleum coke and coal in circulating fluidized bed

Author(s):

Zhao Changsui;  Wang Wenxuan;  Wang Fengjun;  Chen Chuanmin;  Han Song

Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing 210096, China

Keywords:

circulating fluidized bed;  petroleum coke;  coal;  co-firing;  desulfurization

PACS:

X511

DOI:

10.3969/j.issn.1003-7985.2005.01.011

Abstract:

Combustion and sulfur retention experiments of mixed fuel of petroleum coke and coal were conducted on a pilot-scale circulating fluidized bed(CFB)combustor with the thermal input of 0.6 MW.The effects of several parameters, such as the primary air percentage, excess air coefficient, bed temperature, Ca/S molar ratio and mass ratio of petroleum coke to coal on SO₂ emission were verified.Experimental results show that when the ratio of petroleum coke to coal in the mixed fuel increases, the SO₂ emission increases.The maximum SO₂ emission appears when pure coke burns.The SO₂ concentration in flue gas reduces with the increase in the primary air percentage, excess air coefficient and Ca/S molar ratio for all kinds of fuel mixtures.The range between 830 ℃ and 850 ℃ is the optimal temperature for sulfur retention during co-firing of petroleum coke and coal with the mass ratio R of 1 and 3 in CFB.

References:

[1] Zierold D M, Voyles R W.NISCO cogeneration facility [A].Proceedings of 12th International Conference on Fluidized Bed Combustion [C].San Diago, USA, 1993, 1:501-510.
[2] Xie K.Analysis of abnormal combustor temperature in 220T/H petroleum coke-fired CFB boiler and its solution [A].Proceedings of National Conference on Industrial Boiler and Feed Water Treatment Technology [C].Wuxi, China, 2000.66-70.(in Chinese)
[3] Anthony E J, Jia L.Agglomeration and strength development of deposits in CFB boilers firing high-sulfur fuels [J].Fuel, 2000, 79(15):1933-1942.
[4] Wang W A.Research on combustion of petroleum coke blending with coal in circulating fluidized bed [D].Nanjing:Department of Power Engineering of Southeast University, 2002.(in Chinese)
[5] Brereton C M H, Lim C J, Grace J R, et al.Pitch and coke combustion in a circulating fluidized bed [J].Fuel, 1995, 74(10):1415-1423.
[6] Liu H, Gibbs B M.The influence of limestone addition at different positions on gaseous emissions from a coal-fired circulating fluidized bed combustor [J].Fuel, 1998, 77(14):1569-1577.

Memo

Memo:

Biography: Zhao Changsui(1945—), male, professor, cszhao@seu.edu.cn.

Common functions