High flame temperature (2000°C) - ensures complete destruction of harmful pollutants.
Alternate Fuel Resource (AFR)
Waste to Energy
Certain industries have very high fuel requirement and the rising cost of fuel prices makes sourcing of alternate fuel a necessity. Certain hazardous waste can be used as alternate fuel but need to be processed prior to their use as AFR.
To ensure that their use has no negative impact on the manufacturing process, the end product and emissions, the non-reusable high calorific waste, must previously be prepared in such a way that they are suitable for use.
Waste Handled
Advantages of Co-processing
Co-processing ranks higher in the waste processing hierarchy
Residence time of combustion gases above 1000°C in excess of 3-4 seconds – ensures complete destruction of pollutants.
No production of by-products such as ash or liquid residue from gas cleaning.
Complete destruction of organic compounds.
Total neutralization of acid gases, sulphur oxides and hydrogen chloride, by the active lime in the kiln load, in large excess to the stoichiometry.
Embedding of the traces of heavy metals in the clinker structure with very stable links (metallic silicates formation).
The advantages of co - processing of alternate fuel
Limitations of Direct Co-processing
Direct Co-processing is utilization of waste in its original form
Most wastes are directly not suitable due to its physical and chemical characteristics limitation. Variation in Physical and Chemical characteristics of waste lead to:
Difficulties
in unloading
Difficulties
in Storage
Difficulties
in Feeding
Process
Disturbance
Product Quality
Disturbance
Emission
Disturbance
Legal
Non-Compliance
Non-tracking of
Waste Movement
In-discrete
Disposal
Safety
Issues
Environmental
Hazardous