Huge incinerators are often charged with large masses of relatively damp refuse. Considerable air and heat is required to dry the mass before the burning. Unfortunately during the drying phases large quantities of smoke is given off. as the mass dries out, the amount of air required for combustion is decreased and the temperature of the flu gases rises. In incinerators heretofore, the temperature rise often becomes dangerously high. Hence, there is the undesirable condition of the incinerator charge giving off objectionable quantities of smoke during the beginning of the burning operation.

The objects of this invention are attained by a combustion cylinder having a grate at the bottom and an air intake opening at the side of the cylinder in the form of a vertical slit properly designed (fixed or variable type according to requirement).

This cyclonic barrel furnace (UR FURNACE Patent Protected) is an innovative portable furnace, which can eliminate unwanted, non-degradable solid waste in a cyclone of fire . A whirlwind of fire and intense heat is created inside the drum, enabling burning of refuse without odor. Combustion is complete, leaving 3% ash. The furnace is ideal for remote locations with limited facilities for disposing of dry waste.

The spiral cylinder made-up of special variety of stainless steel twisted according to invented design make the fire to a spiral form.

By properly feeding air containing 21% of oxygen in a specified manner, temperature increases and accelerates combustion. Air swirls around in the lid until it is forced down into the barrel along the edges. This rotation continues as the air is channeled into the combustion chamber. The rotations of the air intakes make efficient combustion, keeping the outer surfaces of the body cool.

What is astonishing people is that, there is no extra fuel is used for burning; no petrol, kerosene diesel oil or even electricity. It needs only garbage and dry air. The large volume of air intake makes it possible to burn ―combustible waste‖ as defined in SOLID WASTE MANAGEMENT RULES 2016 at considerably higher temperatures than those found in a burn pile or a traditional burn barrel.

Overfilling of waste in the burn chamber must be avoided as inflow of air may be blocked, resulting reduced intensity of fire. The more advanced incineration design provides effective turbulence through the forced introduction of air directly into hot zones.