SU66287A1 - Wet Fuel Combustion Burner - Google Patents

Description

Fireboxes for burning moist fuel are already known, in which the loaded fuel, under the influence of its own weight, moves along an inclined tray installed in the furnace, is subjected to drying and partial gasification, and then burned on a grid installed at a certain angle to the tray.

According to the invention, inclined trays in such furnaces, for the purpose of two-sided ignition of fuel, are installed in the zone of high temperatures of the furnace space; as a result, a superficial ignition of the fuel sliding through it is achieved. In relation to the grate, the trays are arranged in such a way that when (passing, a layer of fuel is fed to the grate, the upper heated part falls downward and, pierced by air, contributes to the ignition of the fuel from below, while from above it is ignited by heat of bricking and flue gases.

In FIG. depicts a longitudinal section of the furnace according to ACD in FIG. 3; FIG. 2 shows a section along AB in FIG. 3; FIG. 3 is a section through EF in FIG. 2. FIG. 4 of the drawing shows a longitudinal section of the furnace for powerful boilers equipped with chain grilles.

In the manual loading furnace, fuel comes from the bunker / "a trays 2, located near the side walls of the brickwork and from them goes into compartments 3 on inclined grate 4. From inclined grate 4, fuel enters under the influence of its own iBeca and partly due to blowing on horizontal grate bars 5. Very raw fuel must be collected manually.

The flue gases pass through windows 6 7 above trays 2 into the first boiler flue gas duct. Code 8 serves to direct the flow of gases towards the flow of fuel. When (switching from trays 2 to inclined grate 4), the fuel is turned over and the upper layers (get down the combustion bed, and the lower one).

In furnaces for powerful boilers (Fig. 4), equipped with chain lattices, fuel enters the hopper 1 through two hoses (not shown). From the bunker / along the inclined trays 2 located near the wall of the bricking, the fuel moves down into the compartment 3 1a inclined grate 4. From the inclined grate the fuel passes to the chain grille 12, which moves forward to the front of the boiler unit (from I to C

When switching from trays 2 to grate 4, fuel is leveled. In some cases, part of the gas can be removed Hepeis vault II between tollymi sleeves and through the front wall 10. Above trays 2 there are several tuyeres 9 for pumping and sharp blowing necessary for better burning of volatiles released from the surface of the fuel moving along the trays. The walls and the ceiling of the furnace above the chain grille (fully erected. Thus, in the preheated current, the upper part of the hot fuel at the transition from the trays the grate falls down and, due to air, promotes the ignition of the fuel from below, as top, the fuel is ignited by the heat of the bricking and flue gases.

Subject invention

The furnace for burning wet peat fuels, double-shafts, chips, sawdust, etc. — using a tray installed in the furnace to transfer fuel to the grate, which, for the purpose of two-sided ignition of the fuel, inclined trays are installed in the zone high temperatures of the combustion space for surface ignition of a layer of fuel sliding through them and are located with respect to the grate so that when the layer of fuel passes to the grid-irons, the upper heated part falls down and, through air, helps ignite NIJ fuel from the bottom, while on top it is ignited for 1S1chet heat obmuravki topochngh and gases.

with

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No. 6628t FIG. four