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Ignition procedures for common combustion equipment (1) Ignition of a manually fed grate: First, lay wood and kindling at the front of the grate, then light the kindling to ignite the wood. Once the burning is vigorous, add a small amount of coal to the intense fire either by hand or using a coal feeder. When coal combustion is vigorous, the intense flame is gradually pushed outward until the coal covers the entire grate; thereafter, the amount of coal fed in and the volume of air supplied are increased to maintain a strong level of combustion. (2) Ignition of the mechanical grate: First, spread a thin layer of coal on the grate located between the coal gate and the rear arch; place wood and kindling on top of the coal. Then start the exhaust fan to maintain a negative pressure in the furnace chamber within the range of 10–30 Pa. After lighting the kindling and wood, once the wood is burning steadily, move the grate forward at the slowest possible speed by 0.5–1 meter, then stop rotating the grate. Once the coal is burning vigorously, restart the grate and gradually increase its rotation speed as well as the amount of coal supplied. Start the blower, and open the dampers of each air chamber in stages as the coal moves forward, in order to adjust the air supply volume. If necessary, the fire can be stirred through the viewing ports on both sides of the boiler, moving the unburned pieces of wood to the front until burning proceeds normally (when burning is normal, the coal should catch fire at a distance of about 300 mm from the coal gate). 2. The time required for ignition and heating: To prevent localized overheating of the boiler, which could lead to uneven expansion and damage to the boiler’s structure, the duration of ignition and heating should be determined based on the boiler’s design. Under normal circumstances, for boilers with good water circulation, a small water volume, and an evaporation rate of less than 2 t/h, the time from ignition with the boiler cold to reaching operating pressure should be no less than 1.5 hours. For boilers with poor water circulation, a larger water volume, and an evaporation rate of 4–10 t/h, the time required for ignition and temperature rise is 3–5 hours.