SU1476249A1 - Method of burning crushed solid fuel in layered-charge furnace - Google Patents

Abstract

The invention can be used in boiler-houses of communal households and agricultural complexes. The purpose of the invention is to increase the efficiency of the method by reducing the underburning. Solid fuel briquettes and served in the furnace, together with the addition of liquid fuel. The fuel is burned in the layer with simultaneous movement from the point of entry to the place of unloading and blowing air through the layer. The oxygen concentration in the flue gases and the air pressure under the layer are kept constant according to the change in the consumption rate of the liquid fuel additive and the layer vibration. With an increase in the resistance of the layer increase the frequency of oscillation of the lattice, and with decreasing decrease. 1 il.

Description

The invention relates to the combustion of fuel and can be used in utility boiler houses and agricultural complexes.

The purpose of the invention is to increase efficiency by reducing underburning.

The drawing shows a layer furnace in which the combustion method is carried out.

The furnace contains a coal bin 1 with a spray 2 of liquid fuel and a feeder 3, a combustion chamber 4 with a grate 5, under which the duct 6 is located, and a screw 7 for removing slag. The grill 5 is equipped with a vibrator 8 and supports 9 and 10. The hopper 1 is equipped with a sieve 11, and the dispenser 2 is connected to the supply tank 12.

The combustion method is as follows.

Crushed solid fuel, such as coal, is loaded into the hopper 1, where liquid fuel, such as fuel oil, is injected through the nozzle 2. Liquid fuel spreads over coal and adsorbs onto its surface, ensuring the clumping of small particles. From the hopper 1, the mixture of solid and liquid fuel is transported by the feeder-dispenser 3 to the grate 5. When being transported by the feeder 3, the fuel is briquetted. The fuel supplied to the grid 5 is blown through air and burns, transporting along the grid 5. The slag is discharged by the screw 7.

During the combustion process, the air pressure is kept constant at a rate of 4 -vj

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glossy grid 5 and the oxygen concentration at the outlet of the combustion chamber 4. The oxygen concentration is maintained by varying the flow rate of the liquid fuel additive supplied to the hopper 1 by the spray gun 2. The air pressure under the grill 5 is supported by vibrating the layer carried out by the vibrator 8 by changing the frequency of the Q in the flue gases and the air pressure

Claims (1)

river lattice vibrations 5. When the resistance of the layer increases, I increase the oscillation frequency, and when it decreases, they decrease the frequency of the lattice vibrations. Invention Formula The method of burning crushed solid fuel in a layer furnace, by 15 under the layer, they are kept constant according to the change in the consumption of the additive of liquid fuel and the vibration of the layer; moreover, the solid fuel is fed to the furnace before it is fed into the furnace. supplying it to the furnace together with the addition of liquid fuel; burning the fuel in the layer while moving from the point of entry to the unloading point and blowing air through the layer, characterized in that, in order to increase efficiency by reducing underburning, the oxygen concentration under the layer, they are kept constant according to the change in the consumption of the liquid fuel additive and the vibration of the layer, and the solid fuel is briquetted before it is fed into the furnace. T