Scrubber Technology Aerosol separator systems

Directly before the Venturi throat an adequate scrubbing liquid is injected by special nozzles and is distributed homogeneously over the whole cross section.

The strong increase of the flow rate in the Venturi throat leads to the production of very small and fast liquid droplets. The high relative velocity between the particles to be separated and the droplets of the scrubbing liquid leads to a very high collision frequency of particles and droplets and results in a good particle separation, especially of very small particles (aerosols).

Function

In order to accelerate the gas flow it is necessary to generate energy. This causes the gas flow to suffer a drop in pressure which is an approximate first gauge for the separation capacity.

The Venturi throat and the annular gap can be changed using an adjustable regulating unit and can thus be suited to the corresponding quantities of gas.

The separation of the droplets loaded with particles happens in another appropriate droplet separator. Usually a centrifugal separator or a droplet separator are used. 

To achieve the maximum level of separation, the  exhaust gas has to be saturated with water vapor before they enter the Venturi throat. The saturation results from an adequate arrangement of the nozzles in the entry area of the gas of the Venturi scrubber, similar to hot gas quenching. 

 

Advantages

  • scrubbing function immediately available (no down times)
  • separation of aerosols
  • wide load area, efficient partial load because of a controllable Venturi throat
  • resistant to fouling, high reliability
  • little maintenance
  • wide area of application, can be flexibly combined and extended
  • available in all materials  

Applications

  • power range of up to 200.000 m³/h exhaust gas
  • Particle and aerosol separation