Metso Outotec launches digital Optimizer for improved WESP operation in wet gas cleaning

Metso Outotec launches digital Optimizer for improved WESP operation in wet gas cleaning

Metso Outotec is launching a digital Optimizer for its wet gas cleaning solution, the Editube™ Wet Electrostatic Precipitator (WESP). The new WESP Optimizer improves the operation of the WESP section by better adjusting it to changes in the overall process.

“We are excited to launch the new WESP Optimizer. It has important built-in functions to protect the units with plastic tube bundles during low acid load operation. In addition, the Optimizer increases removal efficiency during high acid load operation, as well as provides energy savings whenever there is spare capacity. The Optimizer also monitors the behavior of each WESP, enabling faster damage detection, and provides the operators with otherwise unavailable information such as calculated removal efficiency,” explains Leif Skilling, Director, Gas Cleaning at Metso Outotec.

Metso Outotec has more than 35 years of experience with wet electrostatic precipitators and has sold more than 125 units. This extensive experience of the Metso Outotec experts is now incorporated into the new WESP Optimizer.

Benefits of the Metso Outotec WESP Optimizer

  • Reduced risk of damage to plastic tubes during low acid load conditions, start-up, and commissioning
  • Energy savings whenever there is spare capacity
  • Higher removal efficiency and lower flashover frequency during high acid load conditions
  • Provides operators with otherwise unavailable information
  • Monitors the WESPs for abnormal behavior, enabling faster detection of damages and facilitating troubleshooting
  • Enables faster and more accurate online support from Metso Outotec experts


Wet Electrostatic Precipitators (WESP) are a necessity prior to sulfuric acid plants processing metallurgical off-gas to ensure a high-quality acid. Metso Outotec EditubeTM WESP has a very high removal efficiency potential where dust levels in the outlet are commonly measured at below 0.5 mg/Nm3.

The Optimizer utilizes the existing instrumentation and is always tailored to the needs of the specific customer by Metso Outotec specialists. Commissioning and online support services are available as part of the Optimizer license.

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