• Sufficient forced air inflow and airflow and fuel supply controls to ensure an exhaust gas oxygen content range of 6-12% at all times.
• Hot face refractory concrete-ceramic suitable for thermal shock up to 1400 Celsius and abrasion. Minimum thickness 150mm.
• Cold face refractory lining of calcium silicate or superior material, minimum thickness 100mm.
• Refractory lining of all the ducts shall be done with refractory castings. Superior quality ceramic wool shall be used at all hot duct flanges and expansion joints
• An electrically powered fan forced air supply, with the capacity for variation by the operator.
• One or more fuel burners designed to use diesel fuel type 2 (vehicle standard) equipped with a spark igniter.
• A digital thermometer with connected to an electronic datalogger. The thermometer shall be located on the chamber wall away from the fuel burner.
A heat exchanger to pre-heat air destined for the primary chamber is not compulsory but recommended.
The combustion air systems and fans shall be designed to ensure high combustion efficiency and avoid a reducing (corrosive) atmosphere, incomplete burnout of the flue gases and related problems. It should also be possible to heat the primary air from 10°C to approximately 145°C, depending on the waste composition and moisture content.
“The incinerator shall be designed and equipped to be installed, commissioned and operated in such a way as to prevent emissions into the air giving rise to significant ground-level air pollution; in particular, exhaust gases shall be discharged in a controlled fashion by means of a stack the height of which is calculated in such a way as to safeguard human health and the environment.