Articles
What are the thermotechnical properties of fuels?
- "Heat-related" properties
- Theoretical oxygen/air demand (determines flue gas volume and furnace load)
- Adiabatic flame temperature (determines achievable temperature and heat-transfer intensity)
- "Ignition and burnout" properties
- Ignition temperature, flame propagation speed (gas)
- Burnout time, grindability (pulverized coal), reactivity (coke)
- Residence time requirements and combustion space matching
- "Heat transfer and flow" properties
- Gases: density, specific heat , thermal conductivity
- Liquids: viscosity, surface tension (atomization), flash point, pour point
- Solids: particle size distribution, ash fusion temperature (slagging)
- "Pollution and corrosion" properties
- drives potential; nitrogen drives fuel- potential
- Ash, alkali, chlorine, vanadium determine slagging and refractory attack risk