FI20200008A1 - Solid fuel combustion method using a tubular rotary grate - Google Patents

Abstract

Solid fuel combustion method using a tubular reversible grate. The method is characterized in that the refueling is carried out on the fuel burning at the bottom of the turning grate (1) through a filling opening (2) at the end of the turning grate. After the addition, the tubular grate is suitably rotated so that the combustible fuel and the glowing coals (6) are circulated over the added fuel (5). The added fuel (5) remaining under the burning fuel and the carbon layer (6) heats up and the combustible gases released from it have to pass through the glowing carbon layer (6), the flames and the hot part of the turning grate still above, burning completely. Due to the mass of the turning grate, the heat binding inside the firebox is efficient, as a result of which the temperature of the flue gas is also lower.

Description

A method of burning wood or other solid fuel such that the gaseous constituents of the fuel have to pass through a flame or a layer of glowing carbon already formed and a hot grate part circulating above. It is a question of the utilization of the gases that evaporate from the fuel in the combustion chamber due to the effect of heat. The method is characterized in that when new fuel is added to the already ignited and burning fuel in the furnace, the tubular reversible grate is rotated so that the added fuel remains under the burning fuel. , where they burn, releasing heat. The method consists of the following steps: f2) The fuel placed inside the turning grate (1) is ignited from the fuel. When the ignited fuel has burned for so long that fuel needs to be added, the addition is accomplished by placing more fuel at the bottom of the turntable over the burning and charring portions. f3) When the addition is completed, the grate (1) is rotated so much that the already burning fuel and the glowing carbons (6) rotate on the added fuel due to the rotation of the grate, whereby the added fuel (5) ignites. When the added fuel (5) is heated and ignited, the released gases have to pass through the incandescent carbon layer (6) on top, the flames and the hot grate above, whereby combustion takes place completely. No non-combustible harmful ingredients remain in the flue gases. Burning is perfect. Figure 1. The figure shows the structure of the turning grate. Figure 2. The figure shows the fuel placed inside the turning grate and ignited. Figure 3. The figure shows the situation after refueling. The added fuel (5) has remained under the burning and glowing carbon layer (6) after circulating the grate. The gases evaporating from the fuel pass through the glowing carbon layer (6), the flames and the hot grate part circulating above.

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O N 1. Turning grate

N <Q © 2. Fuel filler hole o = 3. Support frame a 00 4. Hot top of the turntable o S 5. Fuel added

O N 6. Glowing carbon layer

Function f2) The fuel placed inside the tubular circulating grate is ignited. The flames and glowing embers heat the circulating grate, the contact and radiant heat of which heats the surrounding air and furnace. Thanks to the flames, the upper part of the circulating grate heats up strongly, as a result of which the combustion gases released from the fuel pass completely through the hot grate. f3) In the second stage, fuel is added on top of the burning and glowing coal. The grate is rotated on its supports so that the added fuel (5) remains on top of the guided incandescent and combustible carbon layer (6). The combustible gases released by the heat of the fuel thus added have to pass through a layer of glowing carbon and flames, burning completely, releasing heat. The hot part of the circulating grate above completes the combustion result. Advantages of the method: Compared to a conventional solid grate, the gaseous combustion gas components contained in the fuel burn more efficiently and produce useful energy and are not transported unburned with the flue gases. Thanks to the tubular structure, the thermal energy produced by combustion is bound to a wide-ranging circulating grate, which improves the heat binding to the combustion chamber. Thermal energy stays in the firebox more efficiently and does not escape with the flue gases. Circulation of the grate during the addition of fuel causes an improvement in the fuel, which improves the air intake of the still burning and charring fuel, resulting in a more complete combustion. Improved efficiency reduces fuel consumption.

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Claims (1)

A method for burning solid fuel using a tubular circulating grate, characterized in that the method comprises the steps of: N <Q f1) Initially, the fuel is placed in the lower part of the tubular circulation grate and ignited (f2). © o Ir When the need to refuel comes, new fuel is added on top of the burning fuel and the glowing & carbon layer. 00 2 f3) After the addition of fuel, the tubular circulation grate (4) is rotated so that the added S fuel (5) remains under the burning fuel and the glowing carbon layer (6). O OF