METHOD OF FEEDING FUEL IN HEAT POWER STATIONS Russian patent published in 1997 - IPC

FIELD: heat power engineering. SUBSTANCE: method comprises discharging self-discharged cars on gallery 2 arranged above a service-reserve storage made up as slot hopper 3. Discharged coal is fed at first to prism 5 where metal inclusions are removed from it with the use of an electromagnet. The coal is then fed to screen 7 from which fine fraction is fed to hopper 3 and corse fraction is immediately fed to the grid of drum 8. Disintegrated coal is fed to movable hoppers 10 with vane feeders 9. The hoppers move at first under the action of gravity at an angle, and then, with the use of actuating chain 12, it lifts up to a level slightly above the charging ports of pre-hopper of mills 11. Charged hopper 10 further moves to conveyor 15 under the action of gravity. In front of the conveyer 15 it slows down. Conveyer 15 distributed charged hoppers 10 among mills 11. Empty hoppers are brought to way 18 for empty hoppers with a conveyor. They move in this way under the action of gravity up to switch 19 that switches empty hopper 10 in the way for charged hoppers. Empty hopper 10 moves in it under the action of gravity up to vane feeder 9, slows down, and the cycle repeats. EFFECT: simplified method. 2 cl, 3 dwg