SU45036A1 - Suspended combustion furnace - Google Patents

Description

The invention relates to furnaces for burning crushed fuel in a suspended state, in which liquid slag baths are used as an afterburning grate.

In the furnace, in order to maintain the liquid state of the slag, tuyeres are located below the level of the latter in the bath walls, designed to blow a mixture of additional air and pulverized (waste) fuel through the bath.

The drawing shows a vertical section of a furnace for burning ground fuel in suspension.

Through the mouth / fuel hose enters the combustion chamber 2 crushed fuel. The sleeve 3 is used to supply blown air entering through the mouth 4 into the zone above the slag bath 8, which serves to recycle the particles of unburned fuel falling out of the furnace space.

To maintain the Cilac in the bath 8 in a liquid state, a mixture of added air and pulverized air is blown through the layer of molten slag. outburst fuel tuyeres 5.5, located in the walls of the bath below

slag level. Bottom stock is produced through sleeve 6.

In order to avoid the need to have a special grinding device for producing dust blown through a slag bath, this dust can be sucked out of the crusher, where the fuel is crushed and where a certain amount of fine dust is always unavoidable.

The descent of the liquid slag from time to time or even continuously can be done through the tap-hole 7 of a conventional device.

The subject matter of the invention.

Burner for burning the crushed fuel in suspension with the use of a liquid slag bath as the afterburning lattice, characterized in that tuyeres 5.5 are located in the bath walls below the slag level to blow through the bath a mixture of additional air and Horo dust mixture maintaining the combustion of the liquid state of the slag.

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