RU173859U1 - FIRM UNIT SOLID FUEL FOR DRYING EQUIPMENT - Google Patents

Abstract

The utility model relates to equipment for the combustion of solid fuels and can be used as a heat source for drying equipment. The solid fuel combustion unit for drying equipment contains a combustion chamber, the side walls of which are made of refractory bricks, a grate, separating the combustion chamber into an ash pan and a combustion chamber, an ash pan maintenance hatch. The block contains a spark suppression chamber, including a labyrinth system of vertical dividing walls with holes at different heights made of a refractory plate. The technical result of the utility model is to increase the purity of the produced flue gas. 3 s.p. f-ly, 1 ill.

Description

The utility model relates to equipment for the combustion of solid fuels and can be used as a heat source for drying equipment.

The solid fuel combustion unit in the drying lines is used as a manufacturer of a drying agent (flue gas), diluted with air to the desired temperature and supplied to drying equipment, such as a drying drum, by means of a fan or smoke exhaust. The energy source is the heat released during the combustion of solid fuels: firewood, peat.

Known furnace blocks for generating thermal energy by burning solid fuel, for example, a utility model patent No. 106936, IPC F23B 30/00, publ. 07.27.2011, patent No. 2307982, IPC F23B 60/02, F23H 3/02, publ. 10/10/2007.

Known firebox with a horizontal grate for burning solid fuel, Golovkov S.I., Koperin I.F., Naydenov V.I. The energy use of wood waste, M. - Forest industry, 1987, pp. 46-47. We take the known device for the closest analogue. The firebox is a quadrangular chamber lined from the inside with refractory bricks. In the lower part of the chamber there is a horizontal grate made of cast iron grates that divide the chamber into an ash-pan space (ash pan) and a combustion chamber (combustion chamber).

A disadvantage of the known device is that at the exit from the furnace, the drying agent contains particles of unburned fuel in the form of sparks, ash and slag. The content in the flue gas of unburned fuel particles is unacceptable, since their presence is associated with contamination of the surface of the dried material, as well as its ignition.

The technical result of the proposed utility model is to increase the purity of the produced flue gas.

The technical result is achieved due to the fact that the proposed solid fuel furnace for drying equipment, comprising a combustion chamber, the side walls of which are made of refractory bricks, a grate, separating the combustion chamber into an ash pan and a combustion chamber, an ash pan maintenance hatch, characterized in that it contains a chamber spark suppression, including a labyrinth system of vertical dividing walls with holes at different heights, made of a refractory plate. Advantageously, the spark suppression chamber comprises two vertical walls. Advantageously, the side walls of the spark extinguishing chamber are made of a refractory plate. Advantageously, the spark suppression chamber comprises service hatches at the bottom.

The described device is illustrated by the following graphic material.

In FIG. 1 shows a section of a solid fuel combustion unit.

The solid fuel combustion unit for drying equipment contains a housing 1, a combustion chamber 2, the side walls of which are made of refractory bricks, a grate 3 separating the combustion chamber 2 into an ash pan 4 and a combustion chamber 5, an ash pan maintenance hatch with a latch, a spark extinguishing chamber 7, a door 8 for loading solid fuel into the combustion chamber 5. The housing 1 is a metal base coated with heat-insulating material, for example mineral wool, and is sheathed with galvanized steel (not shown in Fig.). Inside the housing 1 are located interconnected combustion chamber 2 and the spark suppression chamber 7. The side walls 9 of the spark suppression chamber 7 are made of a fireproof plate. The spark suppression chamber 7 contains two vertical separation walls 10 and 11 with holes 12 and 13 at different heights; contains an outlet pipe 14. The separation walls 10 and 11 are made of a refractory plate and together with the inner walls of the spark-extinguishing chamber 7 form a labyrinth gas outlet channel connecting the combustion chamber 2 and the outlet nozzle 14. The spark-extinguishing chamber 7 contains service hatches 15 in the lower part, through which remove accumulated ash and slag. The graphic material shows two vertical dividing walls, but their number may be different. Fireclay bricks are used as refractory bricks.

The proposed device operates as follows.

Solid fuel is manually loaded through door 8 into the combustion chamber 5 and laid on the grate 3. Fresh air enters through the valve in the hatch 6 into the ash pan 4, and then through the grate 3 to the fire, thereby ensuring efficient combustion of solid fuel. Using a valve in the hatch 6, the volume and temperature of the flue gases generated during the combustion of solid fuel are controlled by changing the amount of air being mixed. The flue gas from the combustion chamber 2 enters the spark-extinguishing chamber 7, where first it bends around the separation wall 10 through the hole 12, then it goes around the separation wall 11 and exits through the outlet pipe 14. A suction pipe of a fan or smoke exhauster is connected to the outlet pipe 14 (in FIG. (not shown) supplying flue gas to the dryer drum. Thus, the flue gas, bypassing the separation walls 10 and 11, constantly changes direction, which contributes to the fact that the sparks contained in it are quenched, and soot and slag are deposited. Thus, at the exit from the proposed solid-fuel combustion unit, a pure drying agent is obtained (without sparks, ash and soot). The implementation of the side walls 9 and the dividing vertical walls 10, 11 of the spark extinguishing chamber 7 of the refractory plates has the advantage, because when compared with brick, the use of refractory plates greatly facilitates the design and reduces the manufacturing time. The inner walls of the spark suppression chamber 7 are connected to the housing 1 using special glue.

It is obvious that the proposed solid-fuel combustion unit for drying equipment improves the quality of the produced flue gases.

Claims (4)

1. Solid fuel combustion unit for drying equipment, comprising a combustion chamber, the side walls of which are made of refractory bricks, a grate, separating the combustion chamber into an ash pan and a combustion chamber, an ash pan maintenance hatch, characterized in that it contains a spark extinguishing chamber including a labyrinth system of vertical separation walls with holes at different heights made of a refractory plate. 2. The furnace block according to claim 1, characterized in that the spark-suppression chamber contains two vertical walls. 3. The furnace block according to claim 1, characterized in that the side walls of the spark suppression chamber are made of a refractory plate. 4. The furnace block according to claim 1, characterized in that the spark suppression chamber contains service hatches in the lower part.

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