1. Site inspection and adjustment of the grate
The furnace has adjusted the size and passed the 8-hour cold operation test. However, in the process of transportation, the vibration may loosen the structural size change, so after the whole boiler, the grate must be carefully checked and cold no-load test.
A. Check whether the active shaft adjustment screw is loose. If it is loose, adjust the screw to tighten the active bearing.
B. Fill the main and driven shaft bearings with lubricating oil.
C. Carefully carefully, do not allow iron or other debris lost or caught anywhere in the grate.
D. Whether the air regulating device is convenient, check and remove the fault.
E. Whether the ash pull rod is flexible, check and troubleshoo.
F. Whether the lifting of the coal gate is convenient, and whether the distance between the left and right sides and the grate surface is equal.
g. The cover plate on the coal gate must be covered to prevent leakage of coal and the up and down.
H. After the above inspection and adjustment, the cold operation test should be carried out. If the abnormal phenomenon is found, shut down immediately and remove the fault until the normal operation for more than 8 hours.
2. Ignition
Open the ignition door, put the ignition ignition, open the air, the ignition combustion, this is to open the blower, close the ignition door, add coal to the coal bucket, and start the grate, and observe the fire hole, appropriate to fire; after the front arch fire, the coal can be continuous fire, adjust the air volume, make the combustion tends to be normal.
3. Operation and management of the grate
A. The normal combustion situation on the grate is: the fire bed is smooth, the flame is evenly covered and bright yellow, there is no cold air outlet, the burning section is neat and consistent, the ash is dark, and the smoke from the chimney is light gray.
B. Do not put iron or other sundries into the furnace to prevent the stuck grate.
C. The coal seam should maintain a certain thickness, and change the coal seam thickness only when the coal type changes or the boiler load changes greatly. The thickness of coal seam is generally 80-180mm, and the bituminous coal is burned by thin coal seam, and the thickness of coal seam is 90-120mm. When bituminous coal or inferior bituminous coal-mixed with anthracite, the coal seam thickness is 100-130mm. Coal humidity is high, using thick coal seam for slow combustion.(The above data are for reference only)
d. There should be no shortage of coal in the coal bucket, and the phenomenon of "coal bridge" in the coal bucket should be eliminated at any time.
E. When the coal enters the furnace, it shall catch fire at 200-300 away from the coal gate, and shall not be burned under the coal gate, otherwise the coal gate shall be burned out. If similar situation appears, can add water to coal or accelerate the grate speed.
F. When the coal enters the furnace, if it is not on fire at 200-300 away from the coal gate, it is called "defire". At this time open the furnace door to fire, is about to burn coal to the coal seam near the coal gate, or into flammable, speed of fire.
And g. If coking is found, the coke block shall not be greater than 200mm, otherwise the furnace door shall be opened for focusing.
H. Keep the grate burning evenly. If there is a muzzle, black flame phenomenon or the coal seam is uneven, the dial rod can be used to level up.
I. The ash in the air room and the front of the grate must be cleaned 3-4 times per shift.
J. Positive pressure combustion is strictly prohibited. At this time, check the working condition of the blast and induced air, and whether the tail flue is blocked, and proceed
