Apparatus and method for fuelizing inflammable waste

An apparatus for fuelizing inflammable waste comprising:

• a primary crusher for crushing an inflammable waste containing as principal component at least one selected from a group comprising plastics, sponges, fibers, rubbers and wood materials;
• a foreign matter removing device for removing foreign matters contained in said crushed objects;
• an intermediate tank in communication with the primary crusher for receiving crushed objects by the primary crusher, the intermediate tank being adapted to generate a tank load signal associated with a load of the intermediate tank;
• a secondary crusher in communication with the intermediate tank to receive crushed objects from the intermediate tank for secondarily crushing said crushed objects from which foreign matters are removed, the secondary crusher being adapted to generate a secondary crusher load signal associated with a load of the secondary crusher;
• a crushing controller in operative communication with the primary crusher, the intermediate tank, and the secondary crusher, wherein said crushing controller:
• receives the tank load signal from the intermediate tank;
• generates a primary, crusher signal based on the tank load signal, and transmit the primary crusher signal to the primary crusher to control operation of the primary crusher;
• and
• generates a secondary crusher signal based on the tank load signal, and transmit the secondary crusher signal to the secondary, crusher to control operation of the secondary
• a secondary supply controller in communication with the intermediate tank and the secondary crusher, the secondary supply controller receives the secondary crusher load signal from the secondary crusher, generates a tank control signal based on the secondary crusher load signal, and transmits the tank control signal to the intermediate tank to control amount of crushed objects discharged from the intermediate tank;
• an injecting device for injecting said secondarily crushed objects into a burner;
• wherein said primary crusher is provided with rotary blades mounted on a rotary shaft in a main body in multiple stages in an axial direction of the rotary shaft, fixed blades fixed in the main body and a screen disposed below the rotary blades, and said primary crusher crushes the inflammable waste with the rotary blades and the fixed blades, and downwardly discharging crushed objects through said screen, and at the crushing of the inflammable waste, said primary crusher is driven under following conditions:
• a velocity of the rotary blade being not less than 20 rpm and not more than 60 rpm, said velocity of the rotary blade determining the velocity of the primary crusher;
• a phase difference of the rotary blades in two adjacent stages being not more than 60°;
• sieve openings of the screen being not less than 30 mm and not more than 200 mm;
• and
• a distance between the screen and the rotary blades being not less than 20 mm and not more than 100 mm;
• wherein objects reaching below sieve openings of said screen are discharged downward through the sieve openings, and crushed objects larger or equal to the sieve openings are lifted upwards by the rotary blades and repeatedly crushed.