Boiler with improved air supply manner

The invention relates to a boiler, namely a boiler with an improved air supply manner. The boil is characterized in that a plurality of blowers supply air to a plurality of air chambers of an air supply system. The air supply system is provided with independent air chambers and independent blowers, namely each air chamber is provided with one blower, and each air chamber and the corresponding blower are simultaneously regulated by a frequency changer and a ventilation door, so that the air pressure and air flow of each air chamber can be conveniently accurately controlled; semi coke can be guaranteed to be always in the best burning state on a fire grate; the heat exchange efficiency of the boiler is improved, and the burn-off rate of the semi coke is increased. A lot of experiments prove that because the independent air chambers and the independent blowers are used and are respectively controlled by the frequency changers and the ventilation doors, the burn-off rate of the semi coke is increased from about 90% to about 96%, and the heat exchange efficiency of the boiler is improved from 79% to about 84%. The burn-off rate of the semi coke of which the annual yield is over one hundred million tons at present is increased by 6%, so that 6 million tons of the semi coke is saved; with the continuous development of a coal reduction campaign, the utilized range of the semi coke can be continued to be enlarged, and the energy-saving effect can also be continued to be enlarged.