Special Event - On-line Training for Portland Cement NESHAP
September 1, 2010, 1:30 pm
The Cement Industry faces unique challenges when required to clean flue gas emissions. The major environmental problem to address is SO2 emissions control from the pre-heater exhaust or directly from the kiln. The raw materials used in this process may contain sulfides, FeS2 (also called pyrites) which get roasted in the pre-heater. As a result, SO2 is formed. The exhaust from the pre-heater contains this SO2 as well as abrasive dust (particulate) from the raw materials. If SO2 is released into the atmosphere, it will react with atmospheric water vapor to form H2SO4 and produce acid rain.
Cement Industry Emissions Reductions Solution
Cement Industry Flue Gas Desulphurization (FGD) applications combine:
- Potentially high inlet SO2
- Abrasive Particulate
to create a challenging application for wet gas scrubbers.
The DynaWave Wet Gas Scrubbing technology has proven robustness in cement FGD applications. The unique Reverse Jet technology offers high turndown (ability to combine kiln streams into one scrubber) and excellent SO2 removal even at very high inlet loadings. Efficient utilization of Limestone and Lime (effectively 1:1) allows use of the least expensive reagent offering cost savings.
MECS experience in Cement Industry applications avoids problems associated with slurry abrasion and solids buildup.
Holcim and Castle Cement are among the cement industry leaders who recognize DynaWave benefits in their FGD applications.