Metso launches upgraded Evaporative Cooling Tower, a furnace dry gas cleaning solution with efficient cooling and excellent process control

• Metso introduces an upgraded Evaporative Cooling Tower designed to efficiently cool furnace off-gases from 600-700 °C to 200-350 °C using evaporation, suitable for use with a hot electrostatic precipitator or bag filter.

• The enhanced design of the Evaporative Cooling Tower features advanced model-based automatic control for precise cooling during startup and variable process conditions, ensuring protection for the tower and downstream equipment.

• The cooling tower's even temperature profile minimizes condensation risks, thereby preventing corrosion in both the tower itself and subsequent equipment.

• Improved gas distribution is achieved through guiding vanes at the inlet, while atomizing air ensures rapid evaporation of small droplets within the tower.

• The new tower design allows for a large turn-down ratio and reduced air consumption by selecting appropriate nozzles and the number of headers.

• With 60 years of experience and approximately 30 units sold, Metso's extensive knowledge is integrated into the new version of the Evaporative Cooling Tower, reflecting a long-standing expertise in the field.

• The Evaporative Cooling Tower is versatile, capable of treating gases from any metallurgical furnace, and has been commonly used with Peirce Smith converters and anode furnaces; Metso also offers compatible hood systems for gas uptake with adjustable dilution air intake.

Metso is launching the upgraded Evaporative Cooling Tower, an efficient dry gas cleaning solution designed to cool down hot furnace off-gases by means of evaporation. The Evaporative Cooling Tower, which is normally followed by a hot electrostatic precipitator or a bag filter, cools the gas from about 600-700 °C to about 200-350 °C. The tower operates dry, meaning that all water added is evaporated. The small droplets in the tower evaporate rapidly, which reduces the retention time and length needed to ensure complete evaporation.

Advertisement

“We are excited to introduce the enhanced Metso Evaporative Cooling Tower. Its unique design enables efficient and even cooling. We have many decades of experience with cooling towers, and we have now improved both the design and the process control. The advanced model-based automatic control, for instance, allows for accurate control of cooling during startup and varying process conditions; this is important for protecting both the tower and the downstream equipment,” explains Leif Skilling, Director, Gas Cleaning at Metso.

Benefits of the Metso Evaporative Cooling Tower

• Controllable outlet temperature coupled with advanced model-based automatic control for startup and varying process conditions

• The even temperature profile reduces the risk of condensation, protecting the tower and downstream equipment from corrosion

• Efficient gas distribution by means of guiding vanes in the inlet

• Rapid liquid evaporation of small droplets through the use of atomizing air

• A large turn-down ratio and lower air consumption can be achieved in the tower design through the selection of nozzles and number of headers

Metso has 60 years of experience with evaporative cooling towers and about 30 units sold. This extensive knowledge is incorporated in the new version of the Metso Evaporative Cooling Tower.

The Evaporative Cooling Tower can treat gases from any type of metallurgical furnace. It has commonly been used for example with Peirce Smith converters and anode furnaces. In addition to the furnaces, Metso can also supply excellent hood systems for the gas uptake, where, e.g., the converter hood system provides adjustable dilution air intake, giving the operator control of both gas composition and temperature.