DIVIDER OF POWDER-GAS FLOW Russian patent published in 2008 - IPC F23K1/00 

FIELD: heating.

SUBSTANCE: invention relates to the field of pulverisation and can be used during the preparation of solid fuel for burning in thermal power stations. The divider of the powder-gas stream is formed placed one above the other by cylindrical courses 1 with decreasing diameters on the course of the powder-gas stream. Each of barrel shells 1 is connected by branch pipe 2 with furnace chamber 3. In lower barrel shell 1 coaxially are located cylindrical hollow insert 4 and swirl vane 5. Inside barrel shells 1 is placed conduit pipe 6 whose lower part is attached to cylindrical hollow insert 4, and the upper to furnace chamber 3 in lower barrel shells 1 before cylindrical hollow insert 4 and coaxially with it is established divider 7. On conduit 6 before furnace chamber 3 control valve 8 is mounted. The divider makes it possible to give the thinnest fraction of the powder-gas stream to the upper burner, thus organising above the basic zone of combustion of the regenerative zone with lowered oxygen content. In this zone under action of the products of incomplete burning of part of the oxides of nitrogen (NO_x) is restored to safe atomic nitrogen (N₂). This makes it possible to improve the ecological indices of the work of boiler installations, by reduction in the harmful emissions which are contained in the products of combustion.

EFFECT: improvement in the ecological indices of the work of boiler installations.

2 cl, 1 dwg