Burner technology

Together with the invention and development of the ultrasonic nozzle at the beginning of the 1970s, DUMAG successfully developed and optimised a vast number of technologies for the combustion of liquid and gaseous waste products, off-gases and waste air.
A few examples from this development series:

  • Volumetric instead of pressure-dependent delivery of the liquid so that waste liquids contaminated with solids or liquids with varying viscosity can be reliably delivered for atomization
  • Development of the swirl burner with adjustable swirl in order to achieve an intensive combustion air/combustible mixing
  • Development of the tulip-shaped atomization with variable atomization shape
  • Technology of the stable burner without a baffle plate (no transfer of the burner under changing conditions)
  • Electronic ratio or compound control instead of mechanical compound control in order to be able to deliver several combustibles by means of a single burner
  • Development of sulphur burning together with the corresponding heating lance
  • Combustion of gaseous waste media with feeding by means of several lance systems
  • Creation of a burner test station with all measuring possibilities

For the last ten years, further technologies that are continuously optimised have been developed:

  • LowNOx burner
  • Large nozzles with an atomization performance of up to 30,000 kg/h liquid (application for sulphur burning)
  • Atomization of heating oil or waste liquid with 100 % oxygen as atomization medium instead of vapour or compressed air (increase in performance and energy saving with melting or annealing processes)
  • CFD modelling together with the Vienna University of Technology for sulphur burning in the combustion chamber with flow calculation and calculation of the chemical processes in the flame
  • Ultrasonic gas nozzle for an extremely stable combustion with high excess air volumes and revamp equipment
  • Change of the swirl burner flow for extended adjustment of the flame geometry
  • Gas ring distributor as “burner extension” so that further gases can be reached via the burner for insertion into the flame

This technology development is accompanied by a range of various calculation programmes, in particular a combustion calculation programme, in which about 300 liquid or gaseous media are currently stored as well as a programme for calculating the off-gas values. By means of these programmes, all combustion-relevant data serving as basis for a successful application of the burner technology offered by CTP-DUMAG is displayed for a mixture of different media.