Study on the Effect of Si-Al Components in Pulverized Coal Ash on Corrosion in Heating Surface of Biomass Boiler

Abstract:

Pulverized coal ash can be used as an additive to reduce corrosion on heating surface of biomass boiler. Biomass ash and pulverized coal ash were mixed and coated on the metal surface for experiment; the results showed that the corrosion rate of the metal decreases by adding pulverized coal ash. With the increase of additive content, the corrosion gradually reduces. The effect of different pulverized coal ash on corrosion is different, but as the proportion of pulverized coal ash increases, the effect tends to be close. When the molar content of (Si+Al)/(Na+K) is about 2 and the ratio of Si/Al is about 1, the pulverized coal ash additive works best.

• Periodical: Key Engineering Materials (Volume 837)
• Pages: 89-94
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.837.89
• Online since: April 2020
• Authors: Yun Gang Li, Yong Zheng Wang*, Wen Bin Zhu, Yu Sun
• Keywords: Additive, Biomass, Corrosion, Deposition, Pulverized Coal Ash

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