US 5,401,166 A · Method and furnace for burning waste

Abstract

A method and a combustion furnace are provided by means of which waste which is predominantly of organic nature can be burnt effectively and uniformly. The combustion furnace comprises two bottlenecks, one above the other, constituted by rocking grates. The upper rocking grate essentially serves to subject the solids to pre-combustion, namely to drying, degasifying, and partial gasifying, and to supply the material uniformly in doses to the fire bed which is located on the lower grate and in which complete gasification takes place. Rotational movements of both grates provide for uniform passage of the material through the shaft without the risk of burn-through occurring along the edges so that the entire combustion process becomes highly uniform.

Claims10

Dependent claims

A furnace for reducing organic materials to a combustible gas comprising:

an upright shaft with an upper opening for receiving organic materials and a lower opening for discharging a combustible gas;
an upper rocking grate in said shaft for restraining the received organic materials thereabove so that they may be ignited and at least partially decomposed;
first means for injecting a reactive gas into said shaft above said upper grate for at least partially decomposing the organic materials restrained thereabove;
a lower rocking grate in said shaft for restraining the partially decomposed organic materials passed by said upper grate;
and
second means for injecting a reactive gas into said shaft between said upper grate and said lower grate for decomposing the organic materials restrained therebetween to a combustible gas that is vented through said lower opening.

3 more elements

Dependencies are inferred from the claim text.

Method and furnace for burning waste

Life of this patent

Method and furnace for burning waste

Life of this patent

Abstract

Claims10