SU27754A1 - Method of burning fine or powdered fuel - Google Patents

Description

Combustion of fine trash powder fuel presents very significant difficulties. Even at the very smallest clearance (distance) between ordinary grate materials such as charcoal trifle, anthracite trifle, etc., give a very large failure. In addition, a thicker layer of material located on the surface of an ordinary flat grate represents a significant resistance to the pulling of air through the layer of fuel, necessitating a strong draft of the pipe. But at the same time, burning will only be satisfactory when the fuel layer is completely even in relation to the resistance to air movement, which is extremely difficult to achieve in most cases, both with a flat grate and with stepped grates. At best, there is an uneven operation of individual parts of the grate area and, in general, the operation of the firebox is very poor. Therefore, such fine and debris is burned either on special grates (for example, grate grates), or they prefer to preserve some types of such materials and burn them, like pulverized fuel, or

by means of bricking, they are converted into a form suitable for burning on an ordinary grate. In some cases, the fines are mixed with sintering coal and it is possible to use cost-effective fuel in this form.

The present invention is a method of using powdered, dusty, debris or crushed combustible materials, which means that these materials are burned in a firebox not in the usual type of grate of one or another system, but are loaded into a firebox on a more or less thick layer of pebbles, pieces of quartz or bricks and similar substances placed on the grid pattern. The powdered material, falling to a certain depth between the pieces of stones, does not completely tightly fill the gaps and does not prevent the uniform penetration of the air necessary for burning. A relatively large amount of hot stone contributes to a uniform and constant burning in the layer over the entire cross section (TOPI. The resistance of the hot layer of stones, partially clogged with ash, prevents the breakthrough of cold air.

through insufficiently loaded combustible places, and cooling the firebox.

The ash that accumulates between the stones is removed by shaking or mixing the layer of stones. The insertion is possible both at small fireboxes and at large ones. With small fire grates, the grille can be designed as a box of sheet metal or thin-walled iron with holes in the bottom into which a layer of stones is poured (of course, larger than the holes of the box). This box has wide edges, turned outwardly, which loosely but tightly fit the corresponding protrusions on the walls of the firebox. Tight contact of the box with the walls of the firebox can be achieved with the help of a sand shutter or you just need to load the stones above the edge of the box, and then

around it forms a dead ring of stones, the gaps between which are clogged with ash and debris of fuel. With large fireboxes, tools can be easily designed to shake not the entire load of the stones as a whole, but its individual parts.

At the beginning of work, the layer of stones is heated by the corresponding kindling, consisting of larger pieces of fuel, thrown over the stones.

The subject matter of the invention.

The method of burning fine or powdered fuel is distinguished by the fact that the fuel is poured onto a mass of stone, fire-resistant brick or other fire placed on the grate. resistant material of appropriate size.