Flue Gas Conditioning

Howden optimises the performance of existing furnace electrostatic precipitators (ESPs) by injecting controlled doses of Sulphur Trioxide (SO3), to improve collection rates.

SO3 has a significant positive effect on the performance of ESP plant. We have been very successful in improving collection rates of existing electrostatic precipitators used on furnaces & power utility boilers.

Key Features

  • ​​The SO3 flue gas conditioning system supplied by Howden uses a liquid Sulphur Dioxide (SO2) to Sulphur trioxide (SO3) gas generator to provide the optimum in coal-burning power plant fly ash conditioning. The SO3 flue gas conditioning process vapourises SO2 in air to produce an SO3 gas stream for injection into flue gas ducts upstream of the electrostatic precipitators.
  • SO3 has a significant positive effect on the performance of ESP plant. We have been very successful in improving collection rates of existing electrostatic precipitators used on furnaces & power utility boilers.

Benefits

  • ​Optimum performance in high ambient temperature environments.
  • ​Suitable for furnaces fired with high ash content coal.
  • ​ESP power consumption minimised.

Applications

  • ​​General Industry.
  • Iron and Steel.
  • ​Power Generation.
 

Find your contact

Change location

General enquiries: 

If you would like to submit an enquiry please get in touch.

Parts & Service

Lifetime Support

As part of our service we conduct tests on individual plants to determine the optimum operating regime in order to minimise ESP power consumption and SO3 injection rates, and containing emissions levels below the statutory target limit. Howden’s installations are proven to offer optimum performance in high ambient temperature environments, on coal with high ash content.