Removal of Sulfur Dioxide from Sintering Flue Gas with Coking Wastewater

Abstract:

Coking wastewater comprising a lot of ammonia is a good desulfurizer for recycling. Sintering flue gas is characterized by large volume, low sulfur dioxide (SO₂) concentration and large variation amplitude and etc. The purpose for treating waste with waste can be carried out by treating sintering flue gas with coking wastewater. This paper uses a spray tower countercurrent device, ensures the contact between coking wastewater and sintering flue gas, and detects SO₂ concentration of inlet flue gas and outlet flue gas on line by using an automatic flue gas detection instrument. This paper studies on the change regularity for the SO₂ concentration at outlet flue gas during the process of treating sintering flue gas with coking wastewater, the influence of SO₂ initial concentration in sintering flue gas to the removal efficiency of SO₂, the influence of gas-liquid ratio between the sintering flue gas and the coking wastewater to the removal efficiency of SO₂, and the change regularity for the pH value of coking wastewater after desulfurizing. The results show that the sintering flue gas which is treated can live up to the atmospheric pollutant effluent standard of iron and steel industry; the pH value of coking wastewater is reduced after treating, and the conditions for the implementation of subsequent coking wastewater treatment process are provided.

• Periodical: Advanced Materials Research (Volumes 287-290)
• Pages: 910-915
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.287-290.910
• Online since: July 2011
• Authors: Su Ju Hao, Wu Feng Jiang, Yu Zhu Zhang, Bing Liu
• Keywords: Coking Wastewater, Sintering Flue Gas, SO₂ Removal Efficiency

References

[1] Luting Pan, Jinfeng Wu. Environmental Science & Technology. Vol. 33(10) (2010), p.86. In Chinese

[2] Yuan Ren, Chaohai Wei, Chaofei Wu, Guobao Li. Acta Scientiae Circumstantiae. Vol. 27(7) (2007), p.1094. In Chinese

[3] Yuanyuan Peng, Jianfei Song, Yaodong Wei, Mingxian Shi, Tingyu Zhu. Energy for Metallurgical Industry. Vol. 27(3) (2008), p.55. In Chinese

[4] Rongcai Jiang, Haijun Xu, Chunyan Lin, Yiqiang Lai. Sintering and Pelletizing, Vol. 32(4) (2007), p.18. In Chinese

[5] Xiaobo Zhang, Ruitang Guo, Weiguo Pan, Hongjian Xu, Liming Wu, Hao Peng. Electric Power Technology and Environmental Protection. Vol. 26(4) 2010, p.15. In Chinese

[6] Zewei Cheng, Guangbin Zhang, Daqiang Cang, Yanbing Zong.  Iron & Steel. Vol. 43(10) (2008), p.82. In Chinese

[7] Gance Dai, Minheng Chen. Beijing: Chemical Industry Press. 2005. In Chinese

[8] Jun Zheng, Yi Mao, Jialong Hou, Guanghai Zhang. Coal Science and Technology. Vol. 38(1) (2010), p.125. In Chinese

[9] Fangyan Chan, Yu Zhong, Jun He, Yubin Tang, Jianling Ni. Environmental Science & Technology. Vol. 30(8) (2007), p.90. In Chinese

[10] Shiao-Shing Chen Chih-Yu Cheng, Chi-Wang Li, Pao-Hsuan Chai and Yu-Min Chang. Journal of Hazardous Materials. Vol. 142(1-2) (2007), p.362

[11] Irama Sanchez, Frank Stüber, Josep Font, Agustí Fortuny, Azael Fabregat and Christophe Bengoa. Chemosphere. Vol. 68(2) (2007), p.338

DOI: 10.1016/j.chemosphere.2006.12.059

[12] Seok-Young Oh, Pei C. Chiu, Byung J. Kim and Daniel K. Cha. Water Research. Vol. 39(20) (2005), p.5027