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| Status of Exhaust Pollutantion Reduction in Sinter Process |
| WANG Hai-Feng ZHANG Chunxia |
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Abstract The mainly origin of the sulphur oxide, nitrogen oxide and dioxin(POPs) is sinter process. It is very difficult to separate the pollutantion for the large quantity of exhaust, the fluctuant range of flux and low density of pollutant. The desulfurization is just started in our country and the technique hasn't passed with efficient, steady and economical operation. As the environmental protection standard is more and more strict in our country, nitrogen oxide and dioxin will be controlld, too. Sintering gas desulfurization is emphasized in iron and steel industry. SO2 emission reduction is serious. The sulfure flow is analyzed in this paper. The process principles, advantage and disadvantage of some typical sintering gas desulphurization technologies, such as limestone/lime-plaster, ammonia-ammonium sulfate, seawater, magnesia, CFB, dense flow absorber, MEROS, NID, active carbon and so on is described. The sinter process desulphurization technologies of steel plant both in China and abroad are listed. The development trend of sintering gas desulfurization is put forward that the technique of separate the sulphur oxide, nitrogen oxide and dioxin would be researched and the by-product efficiently used would be encouraged at the same time.
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Received: 19 April 2010
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2010, Vol. 45 
