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Rotary kiln Liquid Injection – Advantages and Disadvantages

by Ash Leave a Comment

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

 

Filed Under: Environmental enginering

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