Combustion device for combustion of coal-water fuel

 

(57) Abstract:

The invention relates to the creation of a combustion device for combustion of coal-water fuel and can be used for the disposal of waste coal mills coal, production of culturla, production anthracite crumbs filter and other processing industries, freeing the land from waste. Combustion device for combustion of coal-water fuel enables to burn hydrocarbon fuel fractions of coal 0 - 2 mm with high efficiency, getting environmentally friendly products of combustion and granulated ash, suitable for the manufacture of construction materials. Heating device consists of a screw pump feeder, the outlet of which the supplied compressed air. Pump-feeder delivers the coal-water fuel on the surface to allow the camera where it is burned in a fluidized bed with an inert carrier. 2 Il.

The invention relates to boiler plants operating on coal and ensures efficient combustion of coal-water fuel in the boiler room operation on fine coal particle size up to 2 mm

Known boilers with furnace operating m plants with low productivity. Moscow, Energoatomizdat, 1989, S. 24).

Known combustion device for combustion of coal-water fuel, including the furnace and pump-feeder, piping with nozzles for spraying water-coal fuel combustion space (see EN, 2036376, 1995).

The disadvantage of such a combustion device is the necessity in the preparation of fuel to grind it to a particle size of 250 microns, which requires a large amount of electricity and the use of expensive equipment. In addition, it is very difficult to ensure sustainability of the torch.

The aim of the invention is to provide a combustion device that provides efficient combustion of coal in domestic boilers.

To achieve this goal in a combustion device for combustion of coal-water fuel, including the furnace, and the pump-feeder, and piping with nozzles for spraying water-coal fuel combustion space, at the base of the furnace sectional installed with supply air jet chamber, which is filled with the layer of coarse sand, and the front wall of the furnace placed the spray nozzle with flow in the combustion zone 3-phase water-air-coal mixture containing particles of coal particle size 0 - ha.

In the combustion device mount section to allow the camera, which is filled with the layer of coarse inert material (sand) is used as the inert carrier.

In Fig. 1 shows a General view of the combustion device of Fig. 2 - furnace with sectional allow camera.

The combustion device includes a feed hopper 1 coal-water fuel with a particle size of 0 - 2 mm, under which the pump 2 for dosing fuel. To the output connection of the pump 2, which is screw the supplied compressed air. From a screw pump 2 departs pneumatic transport pipe 3 from the nozzle 4, is introduced into the furnace 5, the nozzle 4 is placed on the front wall of the furnace 5, the base of which has a sectional jet chamber 6, which through the nozzle 7 of the supplied compressed air.

The combustion device operates as follows.

The hydrocarbon fuel with a particle size of coal 0 - 2 mm served in the feed hopper 1. From the hopper 1 to the hydrocarbon fuel by means of a screw pump 2 with a specified capacity pneumatic transport line 3 is fed to the boiler furnace 5 and spray through a nozzle 4 above the layer of hot sand.

Compressed in the giving. The presence of hot inert layer provides 100% coal.

While the ash particles are coagulated and are carried away with the exhaust gases in the ashtray and aerocycle where are captured and used for manufacture of building materials.

The estimated economic effect of the modernization of boiler HP-18 capacity of 0.2 Gcal is 192 thousand rubles

Combustion device for combustion of coal-water fuel, including the furnace and pump-feeder, piping with nozzles for spraying water-coal fuel combustion space, characterized in that the base of the furnace sectional installed with supply air jet chamber, which is filled with the layer of coarse sand, and the front wall of the furnace placed the spray nozzle with flow in the combustion zone 3-phase water-air-coal mixture containing particles of coal particle size 0-2 mm pipeline from the pump feeder to the outlet nozzle which is attached the compressed air.

 

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