Potential for Slagging, Fouling, and Abrasion during Co-firing of Indonesian Bituminous Coal and Hardwood Waste Pellet.
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Abstract
. Indonesia has started co-firing in Coal-Fired Power Plant, reducing carbon emissions. However, co-firing can cause slagging, fouling, and abrasion in practice. The potential for slagging, fouling, and abrasion of the blend of hardwood waste pellet and Indonesian bituminous coal from two different regions (A Coal and B Coal) is evaluated based on the analysis of the material characteristics. The A Coal and B Coal were blended with a ratio of 25:75 (X Coal), 50:50 (Y Coal), and 75:25 (Z Coal), then coal was blended with hardwood waste pellet with a composition of 5, 10, and 15 percent, respectively. Based on the calculation, B coal with high alkaline content has a higher risk than others. The score of slagging decreased with the blending of 5%-15% of the wood pellet for B Coal but increased for Y Coal. The score of fouling decreased with the blending of 15% of the wood pellet for X Coal and 5%-15% of the wood pellet for Y Coal. Blending wood pellets up to 15% does not affect the risk of slagging and fouling of Z Coal. The abrasion risk for all samples is low. Overall, blending wood pellets up to 15% with coal with a high alkali content can reduce the risk of slagging, fouling, and abrasion.
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