Scrubber Technology Jet scrubber towers

Vertical or inclined tube with a gas inlet from the side and concentrically arranged motive nozzles in the tube above the gas inlet.

Mostly combined with a laterally arranged centrifugal separator.


Through special motive nozzles a scrubber medium  is injected and distributed at the top of the Jet scrubber tower to produce a maximum  gas/liquid exchange area and drops with a high relative speed  to the gas flow. Due to the high energy input, the Jet scrubber tower can aspirate and convey gases  and vapors by itself.  This injector effect enables  the cleaning of flue gases without a loss in pressure in the gas flow. Thus, there is generally no requirement for a mechanical ventilator for conveying the gases.

At the same time, the quenching effect leads to the cooling of the gases or vapors. Water evaporates into the gas stream and the gas stream is cooled to the cooling limit temperature. Vapors can be cooled and condensed by heat conduction.

At the modified model (quenching), gases with up to 1.300°C can be cooled and cleaned in one procedure.

On the way through the scrubber tube, the pollutants are absorbed into the fluid. In the case of the chemical absorption the harmful substances are chemically bound.

Separation degrees of up to 98 % per scrubber stage are reachable.

By using the effect of inertial separation, solid particles or drops in the area of the motive nozzles are separated at fast flying drops of the scrubber fluid by a collision with them. In this way, particles with a diameter ≥ 5µm  can be fully separated.

The gas and liquid have to be separated in a centrifugal separator arranged downstream at the end of the Jet scrubber tube.


Special Characteristics

  • scrubber function is available immediately ( no down times) 
  • combination of particle separation and separation of harmful substances in one plant
  • auto-suction, no pressure loss
  • large load, responds well to partial load 
  • resistant to fouling, high level of operational safety
  • little maintenance
  • wide area of application, can be flexibly combined and extended
  • available in nearly all materials 

Areas of application

  • power range up to 200.000 m³/h flue gas
  • quenching of hot flue gases
  • chemical absorption of harmful substances 
  • particle separation
  • destruction of suddenly appearing harmful substances : particularly appropriate as emergency scrubber system