What kind of boilers are generally used for waste rock power generation, and what are the requirements for coal quality?
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This post was last edited by zgj2405 on 2011-4-17 09:34. Regarding the combustion of gangue, it is commonly used for power generation. Those who are involved in gangue-based power generation, could you please provide guidance on what type of boiler should be used and what are the requirements regarding the quality of the gangue as coal? Thank you! If you have any relevant information, please send it to me; I would be extremely grateful!
This post was last edited by salesment on 2011-4-21 09:59. Why is coal quality still not the most important factor? Because today’s boiler combustion aids can enable even low-quality coal to be burned, thus helping to save energy effectively
Slag is generally used more in fluidized-bed boilers for power generation, but it causes significant wear on the boilers; it is better to mix slag with a certain amount of high-quality coal when burning it
For the fluidized bed – as mentioned above, an oxidizer is used. How much of this oxidizer is needed to burn coal gangue for a day, and what is the cost?
For waste rock power generation, circulating fluidized bed systems are widely used at present. As for coal quality, an average calorific value of over 3,500 calories per unit is sufficient; if this requirement isn’t met, some bituminous coal or coking coal can be mixed in, as long as stable combustion is ensured. At the same time, the sulfur content must be taken into account during design.
Reply to 1# xdp1073: The most suitable boiler type at present is a circulating fluidized bed boiler; the coal quality requirements can be discussed with the boiler manufacturer during the design phase.