Reduce raw coal consumption
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May I ask: apart from increasing the slag blending ratio, what other methods can be used to reduce raw coal consumption? Thanks!
With a large amount of slag added and high usage levels, the amount of raw coal used is not necessarily reduced. Even mixing ensures stable combustion conditions, and operational efficiency helps to reduce the consumption of raw coal.
1. Improve boiler efficiency 2. Reduce load
Adjust the grate spacing appropriately according to different coal types, and adjust the volume of air supplied and drawn in accordance with operating conditions and load levels, in order to ensure a as even possible supply of steam.
The operator just needs to control the negative pressure/oxygen level and the moisture content of the coal, etc. Everything else changes with the load. In terms of design, for large-scale boilers, slag heat recovery can be considered, as well as further reducing the flue gas temperature. Increasing the steam pressure level can also help reduce consumption, which is why many large power plants use supercritical and ultra-supercritical units.
It depends on your boiler, the fuel used, and the system settings
When the equipment and all facilities are fixed, the load remains constant, and the type of coal does not change, to reduce coal consumption, apart from appropriately mixing slag into the raw coal, careful operation and optimization of operational parameters are also necessary； Reduce the residual carbon content in the slag ； Improve combustion efficiency and boiler efficiency, etc.
Can increasing the slag inclusion ratio reduce coal consumption? ? ? ? Sometimes it backfires! ! ! !
Reduce raw coal consumption. In my opinion, there are several aspects to consider: (for reference only) 1. Adjust the particle size ratio of the raw coal. Reduce the loss of fly ash. 2. Increase the moisture content in coal appropriately. The purpose is also to reduce the loss of fly ash and coal leakage. 3. Adjust the fire bed area on the grate. Ensure that there is no red slag in the slag. 4. Rational proportioning of air supply. Those with the necessary conditions can consider using secondary air. 5. Increase the recovery and utilization of waste heat from boilers. 6. Reduce leaks of steam heat.
Adjust combustion to improve efficiency; appropriately reduce the moisture content in coal; increase the temperature of the incoming water; make rational use of the heat in the flue gases; and make effective use of furnace slag.
1. Perform soot blowing reasonably and in a timely manner as needed. 2. Adjust the combustion process appropriately to maintain an optimal oxygen level. 3. Select a coal type that is suitable for use. 4. Continuously improve operational skills