Rotary kiln Liquid Injection – Advantages and Disadvantages

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