ENVIBAT-WESP InstallationMACT Standard = (Maximal Achievable Control Technology)

www.envibat.se; info@envibat.se

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