A fixed bed gas remediation solution for mercury control

Existing solutions proposed to meet the new mercury limits under the National Emission Standard for Hazardous Air Pollutants (NESHAP) all suffer certain shortcomings, particularly for those plants that need to achieve a significant level of mercury reduction. A new mercury control system discussed in this paper overcomes these through a simple, passive, and non-invasive fixed sorbent bed approach. Both field tests and lab tests indicate the new technology is able to achieve long lifetimes in the field before requiring replacement or regeneration, an issue that has limited other fixed bed approaches from succeeding. Furthermore, this approach does not impact the final clinker or the cement kiln dust, and does not require complex on-site chemical processes to operate. These factors make it a highly cost competitive option for achieving compliance.