The issue of mixing coal gangue into combustion
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How should the proportion of coal gangue used as a supplementary fuel in coal-fired boilers be determined? What about the cost-effectiveness?
Someone claimed that coal powder boilers cannot use coal gangue as a fuel, while fluidized bed boilers can. I don’t quite understand why coal-fired boilers don’t work
When using coal gangue as a supplementary fuel in pulverized coal furnaces, the following issues need to be taken into consideration: 1. The impact on the stable operation of the boiler after adding this supplementary fuel. Fluidized bed furnaces are different from pulverized coal furnaces; fluidized bed furnaces have tons of hot bed material, and it is not easy to extinguish the fire when the quality of the coal deteriorates, whereas in pulverized coal furnaces, the fire goes out even if the quality of the coal improves only slightly. 2. Comparison of combustion economics: The use of coal gangue in coal-fired boilers reduces the boiler’s thermal efficiency due to its high lime content, which leads to an increased amount of ash. 3. Coal gangue is difficult to grind, resulting in high power consumption in the powder production system.
#Here’s a quick reply: #Coal gangue can be ground into powder and added to coal water slurry in proportion