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Shenhua Group, an energy conglomerate incorporating coal mining, power generation and coal liquefaction
Published in Wang Yuehan, Ge Shirong, Guo Guangli, Mining Science and Technology, 2004
Physical coal blending is the simplest and efficient way to adjust the coal quality. In order to find the source which can be blended with the Shenhua coal to meet the requirements of ash fusion point, we at Shenhua preliminarily locate an area of coal resources, and verify different coal blending proposals and finally draw a curve of the ash fusion points in the blended coal with Shenhua products to analyze the approximate linear weighting changing characteristics. Then, the overall analysis and assessment of combustion property and caking property have been carried out to finalize the coal type and coal-blending proposal. By blending, the adaptability of Shenhua Coal to all equipment has been remarkably improved.
Grindability and abrasive behavior of coal blends: analysis and prediction
Published in International Journal of Coal Preparation and Utilization, 2022
Alamin Idris, Zakaria Man, Azmi Bustam, Nurul Ekmi Rabat, Fahim Uddin, Hafiz Abdul Mannan
Today, coal blending is a common practice in coal-fired power plants to enhance economic performance, meet boiler requirements, and comply with environmental regulations (Shen et al. 2019). Although the cost and availability of coal are of prime consideration, the reasons for coal blending vary depending on the challenges faced at the coal-fired power plants. Generally, coal blending is performed to meet stringent environmental regulations such as SO2 and NOx emissions, minimize operational problems, i.e., slugging, fouling and deposit formation, extend fuel flexibility, and enhance combustion or boiler performance. Low-grade coal can be used in the blend to reduce the cost of feed coal. Coals with high sulfur, nitrogen, and ash contents can be blended with high-quality coals to overcome the emission issues and operational difficulties (Mohanty et al. 2019). Indigenous coals are blended with commercially available coals to secure the supply line for extended periods. In most cases, coals are blended to enhance the performance of boilers in terms of energy production, cost, and operational safety (Dobó and Fry 2018).