Waste incinerators

A waste incinerator is a technical plant designed to convert non-recyclable waste into a maximum amount of energy while generating a minimum amount of residues. The state-of-the-art incinerator is an environmentally optimum solution for medical, hazardous and non-recyclable waste.  The combustion chamber is chosen so that  the flue gas treatement can work in optimum conditions resulting in high performance at a minimal cost.

The type of incinerator and the choice of combustion chamber type depends on the characteristics of the non-recyclable waste. Non-recyclable waste can be specified by its calorific value (CV), Chlorine content, homogenicity and density.

Medical and hazardous waste, typical non-recyclable wastes, are mostly non-homogenous, highly calorific, and often have high Chlorine content.

Solid waste incinerators

Solid waste generates a relatively high amount of ashes during the combustion process, this is why the combustion chamber of an incinerator has to continuously evacuate the ashes if the amount of waste is > 90 kg/h. A static hearth (or eventually a stepped hearth) incinerator is only suitable for small amounts of waste.For capacities > 300 kg/h a rotary kiln, a moving grate or fluidized bed incinerator is used,altough a fluidised bed incinerator requires a very homogenised feed stock.

For solid waste with high calorific value, a rotary kiln incinerator - and more specifically the counter current rotary kiln -is the most versatile technology. The rotary kiln incinerator is typically used for medical and hazardous waste.

For solid waste with (very) low calorific value, a moving grate incinerator is a suitable technology. The moving grate incinerator is typically used for domestic or household waste. If medical waste would be incinerated in a grate incinerator, the grate would suffer from "hot spots". Hot spots will destroy the grate and as a consequencemoving grate incinerators cannot be used safely for the disposal of high calorific value (hasardous) waste.

For solid waste, very homegenous,as well in chemical composition as in particles size, a fluidized bed incinerator is a suitable solution. A fluidized bed incinerator is typically used for WWTP sludge.

Medical waste incinerators

The medical waste incinerator is a high temperature kiln. Biohasardous waste such as medical and hospital waste can only be totally desinfected by thermal treatment.
To be sure of total desinfection, the temperature in the combustion chamber has to exceed 1000 degrees C.A rotary kiln incinerator is the most used technology for the destruction of medical waste,because of its versatility,its continuous operation and because of its self cleaning properties (no need for inside cleaning)

Industrial and hazardous waste incinerators

Industrial wastes are mostly highly calorific and,as such, generate very high temperatures (> 1100 degr.C) while being oxidised.. Those high temperatures can only be safely handled in a rotary kiln incinerator.

Gas and liquid incinerators

Ash generation during combustion of liquid and gaseous wastes is generally very low.  Because of the absence of ash,liquid and waste gas incinerators are typically static incinerators.