SU1040274A1 - Fire-box device for burning high-damp wood fuel - Google Patents

Abstract

Flue DEVICE FOR COMBUSTION high moisture WOOD FUEL comprising connected to Dshohodu furnace grate and disposed above the combustion chamber of drying, hydrochloric shaft with perforated opposite walls, through which the shaft cavity is connected respectively with an input ivyhodnoy gas chamber, the latter is connected with a chimney, wherein that, in order to increase efficiency by intensifying the drying process and lowering the temperature of flue gases, it is additionally equipped with an exhaust fan, it is connected on the intake to the chimney, and on the exhaust to the INLET gas chamber of the drying shaft.

Description

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This invention relates to fuel combustion and can be used in boilers and industrial furnaces.

Furnace devices for burning high-moisture wood fuel are known, comprising a furnace with a grate connected to the chimney and a drying shaft fl located above the furnace.

The disadvantage of these devices is low efficiency due to the low intensity of drying and lowering the temperature of the flue gases with water vapor evaporating from the fuel.

It is also known a combustion device for burning high-moisture wood fuel containing a furnace with a grate and a drying shaft with perforated opposite walls placed above the furnace, through which the cavity of the shaft communicates respectively with the inlet and outlet gas chambers 2. . ,

This device also does not provide fuel drying and, in addition, does not use the heat of flue gases after the furnace, which reduces efficiency.

The purpose of the invention is to increase efficiency.

This goal is achieved by the fact that the combustion device for burning high-moisture wood fuel contains a furnace with a grate connected to the chimney and a drying shaft placed above the furnace with perforated opposite walls, through which the shaft cavity communicates respectively with the inlet and outlet gas chambers, the latter being connected to the chimney is additionally equipped with a dilosos, which is connected to the chimney at suction, and at the exhaust to the inlet gas chamber of the drying shaft. -,

The drawing shows the combustion device, a longitudinal section.

The combustion device for burning high-moisture wood fuel contains a furnace 1 with a grate 2 connected to a chimney (not shown) and a drying shaft 3 with perforated walls 4 and 5 placed above the furnace 1, through which the cavity of the shaft 3 communicates respectively with the inlet and outlet gas chambers 6 and 7. The gas outlet chamber 7 is connected to the pipe 8 with the chimney, and the gas inlet chamber 6 by the pipe 9 is connected to the exhaust of the exhaust fan 10, which is additionally equipped with a combustion device. Smoke exhauster 10 on suction connected to the chimney. Drying shaft 3 is equipped with a suction inlet 11.

Top.a 1 is connected via ashpit 12 to fan 13, and through windows 14 to chamber 15 of after-burning. The device works as follows.

Raw fuel through the receiving

5, the nozzle 11 enters the drying shaft 3, is dried by flue gases, and is lowered onto the grate 2 of the furnace 1 where it is burned. Combustion air flows from the fan 13 through ashpit 12. The resulting flue gases and gasification products through the windows 14 from the furnace 1 are directed to the afterburning chamber 15, where the gasification products are burned. From the gasification chamber, high-temperature flue gases enter the boiler to produce steam, after which they are removed through the chimney to the atmosphere. Ash and Tshak from the firebox 1 fail In; ashpit 12, from where

0 are periodically deleted. Flue gases for drying the fuel are obtained by the exhauster 10 from the flue, through the pipe 9 enters the inlet gas chamber b, the perforated wall 4 passes successively, the fuel layer / placed in the cavity of the drying shaft 3, the perforated wall 5 and through the outlet 8. the gas chamber is discharged ; in the chimney. With

For this, waste low-temperature flue gases (130-300 ° C) are used for drying fuel, which makes it possible to use the heat of these gases, thereby eliminating the expenditure of part

from fuel to its drying, which increases efficiency. The efficiency is also increased due to the discharge of water vapor, evaporated moisture into the chimney, since this does not reduce the temperature pressure in the boiler and increases its metal intensity.

In addition, the presence of the smoke exhauster 10 allows to intensify the drying of the fuel due to the selection of the optimal aerodynamic regime in the drying

5 mine 3, which in turn allows for greater profitability.

Claims (1)

HIGH-WATER WOOD TURNING STOVE FUEL comprising connected _to: chimney furnace with a grate and located above the drying furnace shaft with perforated opposite walls, through which the shaft cavity is connected respectively: to the input UQ i'vyhodnoy gas / chambers, the latter being connected to the chimney, characterized in that, in order to increase efficiency by intensifying the drying process and lowering the temperature of the flue gases, it is additionally equipped with a smoke exhauster connected at the suction to the chimney and at the exhaust to the inlet gas chambers drying shaft. ω s: Ί