Dry Dedusting of Blast Furnace Gas

Dry type dedusting does not require water scrubbing. Instead it employs an electrostatic precipitator or a bag filter to clean the BFG. Dry dedusting eliminates generation of polluted water and slurry. It improves gas cleanness with dust content of <5mg/Nm3. Dry dedusting occupy 50% less land area than wet type dedusting.

Development Status Products
Commercial
iron, steel

Dry Dedusting of Blast Furnace GasCosts & Benefits

Parent Process: Blast Furnace System
Energy Savings Potential

Dry dedusting will reduce water consumption by 7-9 Nm3/tHM. It may also increase the power generated by TRT systems by 30% compared to wet-type dedusting. 
CO2 Emission Reduction Potential

Indirect GHG reductions will arise due to increased power generation in the TRT - if installed. 
Costs

Investment costs are 70% compared to wet-type dedusting equipment cost.

Dry Dedusting of Blast Furnace Gas Publications

The State–of-the-Art Clean Technologies (SOACT) for Steelmaking Handbook

Date: 

Dec
2010

Source: 

Asia Pacific Partnership on Clean Development and Climate

Format: 

PDF

Type: 

Publications

 

The State–of-the-Art Clean Technologies (SOACT) for Steelmaking Handbook is developed as part of the Asia-Pacific Partnership on Clean Development and Climate program and seeks to catalog the best available technologies and practices to save energy and reduce environmental impacts in the steel industry. Its purpose is to share information about commercialized or emerging technologies and practices that are currently available to increase energy efficiency and environmental performance. 

http://asiapacificpartnership.org/pdf/Projects/Steel/SOACT-Handbook-2nd-Edition....

Page Number: 

45

Asia Pacific Partnership Appendix

Date: 

May
2012

Format: 

PDF

Type: 

Publications
http://asiapacificpartnership.org/pdf/Projects/Steel/Appendix1.pdf

Page Number: 

125