ENVIBAT-WESP InstallationMACT Standard = (Maximal Achievable Control Technology)
www.envibat.se; [email protected]
Case study
Applications / Industries
• Power utility boilers
• Textile industries
• Paper and pulp
• Metallurgical industry, furnaces
• Coke furnaces
• Hazardous Waste incineration
• Sulphuric Acid plants
• Woodchip dryers (“blue haze”)
• Bio fuelled gasifiers
• Chemical processes
Scrubber Baghouse DryESP WESP
Extremely fine particles Aerosoler Heavy metals Dioxins and furans Eliminates opacity Low gas temp/high dewpoint Sticky particulate High efficiency Gas absorption required High resistivity particles Low energy consumption Low maintenance cost
Air Pollution Control Equipment
Year 1997 LKAB installed a pilot Blast Furnace at Swerea-MEFOS, Luleå. The product gas contains both CO and H2. The Blast Furnace operates at 0,8 bar over pressure. The design pressure for the WESP is 1,5 bar. The emissi-on standards for dust are < 10 mg/Nm3. This gave WESP as the optimal choice.
A technology and supplier we strongly recommend
Result; The installations operates in campains for appr. 5 weeks. More than 30 campains are done. Emissions are measured
in the range 1-3 mg/Nm3..
A compact installation with a minimum foot-print. More than 15 year operations has shown excellent accessibility and low emis-sions.
Lars-Åke Ekervehn, Production Manager
Basic Data Pilot Blast FurnaceGasfow Nm3/h 4400CO % Vol 10-30H2 % Vol 3 -10 CO2 % Vol 5-25 N2 % Vol Rest Temperature °C 54
Emission Mg/Nm3 0,9-3
Project: WetESP pressurized - Processgases Blast Furnace
Customer: LKAB, Sweden
