A Rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process. The comparison between rotary kiln liquid injection advantages and disadvantages are as follows.
Rotary Kiln Liquid Injection Advantages
|
Rotary Kiln Liquid Injection Disadvantage
|
- Can be use for a wide variety of both liquids and solid
- No problem when melt occurs
- Drums or bulk containers with various feeds are used
- Good mixing and air for solids
- Continuous ash removal does not interfere with burning
- No moving parts in kiln
- West scrubber can be added
- Rotational speed of kiln can be varied to control residence time in burning
- No preheating or mixing needed
- Can be operated
- At very high temperature of 1400’ C to ensure destruction of toxic chemicals
- Able to handle a broad range of liquid
- No ash removal needed from incineration bottom
- Can handle small amounts of liquids
- Responds fast to waste temperature changes
- Almost no moving parts
- Low maintenance
|
- High capital cost for installation especially when using low feed rates
- Careful operation in order not to damage refectory
- Airborne gases or practices mat exit prior to complete oxidation
- Spherical or cylindrical solids may pass through faster and avoid complete burning
- Excess air required due to leaks, which lower fuel efficiency
- If drying grates are used prior to kiln they may become plugged with heat
- High particulate loadings
- Relatively low thermal efficiency
- Liquid must be able to be atomized
- Liquid must be hated sufficiently or supplement fuel added
- Must be capable of complete combustion without flames hitting refectory
- Liquid waste may clog burner nozzles
- Require sophisticated instrumentation
|
