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XG-40/3.82-M Fuel (Boiler cold-state start up)

--- The fuel conveying system should operate normally.
--- The material which particle size is qualified could be sent to the boiler.
--- When the bed temperature is higher than 450℃ (this data is the recommended value of bituminous coal, and it would be determined after adjustment), material can be sent into the furnace.
--- The feeder is under manual controlling.
--- The gate valve of the feed bin should be opened.
--- The sealing air for the feeder and the insolated gate valve should put into use.
--- Observe that whether the bed-temperature rising rate is bigger than 5℃/min and whether furnace particles is burning or lighting, so that we can see whether the ignition is successful or not.
--- If the ignition is successful, the feeder should continue to operate with the lowest speed.
--- Open no. 2 isolation gate valve .
--- No 2 coal feeder conmissioning ( under the mnimum speed)
 --- If needed, reduce the output of the under-bed oil burner and increase the feeder speed simultaneously, or other combustion device should be put into use.
--- Check the bed-temperature rising rate and add some fuel further. 
--- The limestone feeding function should be put into use (manually), and the limestone feeder’s output should be adjusted to be 10%.
--- If the oil pressure is lower than the lowest and the bed temperature is higher than 820℃, the oil can be reduced gradually and oil burner can be cut off. For the sake of the increasing of the load, the feeding amount should be increased simultaneously.
--- If the oil burner is cut off, the primary air damper should be open slowly. As a certain amount of air is needed for the cooling down of the mixed air nozzle in the burner, turn off the air damper of the under-bed burner gradually but not totally shut off.
--- Under the premise that the bed temperature is maintained to be unchanged, the other oil burner should be cut off, and the feeding amount should be adjusted in order to increase load steady.
--- According to the specific curve, the primary air flow can be increased along with the increasing of boiler load.
--- If the fixed values of the main steam pressure and temperature are achieved, the load control and the feeder control should be put into use.
--- The limestone feeder should be automatically controlled. And the SO2 control should be put into use.
--- By the means of slag-discharging of the slag cooler or the adding of bed material, the bed pressure should be maintained to be about 6KPa .
--- The main steam pressure should be increased to 5.3MPa according to the boost curve.
--- The main steam pressure should be under automatically controlling.


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