Research development of VOCs emission reduction during iron ore sintering in steel industry
WANG Hai-feng1,QIN Song2,JIANG Xi2,ZHANG Chun-xia1
(1. State Key Laboratory of Advanced Steel Processing and Products, Central Iron and Steel Research Institute, Beijing 100081, China 2. China Iron and Steel Association, Beijing 100711, China)
Abstract:A source of volatile organic compounds (VOCs) is iron ore sintering process. At present,the status of the VOCs emissions in Chinese steel industry is no standard,unmonitored and undetected. The amount of VOCs emissions is not clear. The VOCs emissions status and standards of steel industry in China and abroad were summarized. The VOCs formation in iron ore sintering process was analyzed. They were formed from volatile material in the coke breeze,oily mill scale,etc. and discharged as the form of gas. There are three ways to reduce VOCs emissions: source reduction,process control and treatment in the end. Source reduction is to reduce the oil content in the dust and mill scale. It is the best choice for the VOCs inhibition. Process control is that the parts of the sintering waste gas are introduced into the sintering layer. The VOCs in the hot waste gas are decomposed through the sintering zone with more than 1 300 ℃. Treatment in the end is active carbon method and MEROS method. These technologies have been used in some Chinese steel plants. With the VOCs standard to be formulated,the VOCs emissions of iron ore sintering in Chinese steel industry is expected to meet the standard with the existing technologies.
王海风,秦 松,姜 曦,张春霞. 钢铁工业烧结过程VOCs减排研究进展[J]. , 2018, 53(1): 1-7.
WANG Hai-feng,QIN Song,JIANG Xi,ZHANG Chun-xia. Research development of VOCs emission reduction during iron ore sintering in steel industry. Iron and Steel, 2018, 53(1): 1-7.
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