Study on Lignite-Blended Burning Technology in the 1025t/h Bituminous Boiler

Jinfeng MA, Jingxing WU, Tianshu ZHOU, Jie LENG, Chong JIANG

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DOI: 10.4236/epe.2009.12018                

Abstract

Due to a serious shortage of the coal in Tonghua, a retrofit solution of mixing warm flue gas extracted from reversing chamber into the coal pulverizing system and cold air into the hot air coal pulverizing system is proposed so as to reduce oxygen content. At the end of the pulverizing system and medium temperature of the conveying system, dual-channel combustion burner is transformed into horizontal bias combustion burner. The measurement results show that 50% ratio of lignite blended in the 1025t/h bituminous boiler is feasibility. It is also an important technology to reduce NOx pollutant emission.

Keywords

coal pulverizing system, blended coal burning, lignite, warm flue gas, explosion prevention, drying capacity

Conflicts of Interest

The authors declare no conflicts of interest.

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