ISGS Mercury Control Technology Receives Funding from Illinois Clean Coal Institute

Transportable bench sorbent activation process (SAP) unitIllinois has mandated a 90% cut in mercury emissions from coal-burning power plants by mid-July 2009. ISGS and Electric Power Research Institute (EPRI) have developed a patented technology, the sorbent activation process (SAP), to help reduce the operating cost of activated carbon (AC) injection processes for mercury control. The technology involves the on-site production of AC from the same coal as that burned by the utility. The ISGS engineering team has designed, fabricated, and is currently testing a transportable SAP unit to demonstrate the technology at several utility sites. The SAP unit can produce 1 to 4 pounds of AC per hour and can be attached to a sorbent test device, which will allow the performance of the AC products to be tested in the slipstream of an actual flue gas.

The SAP is the result of more than five years of research and development efforts supported by EPRI. In October 2007, Illinois Clean Coal Institute (ICCI) awarded ISGS a grant to evaluate the performance of the SAP at a utility site burning Illinois coal. EPRI and ISGS are seeking support from industry to test the SAP at several other utility sites during 2008 and 2009. ISGS engineers are currently performing optimization tests with the SAP unit at the ISGS Applied Research Laboratory.

On December 4, 2007, representatives from ISGS, EPRI, Ameren, Apogee Scientific, Inc., Western Kentucky University, Calgon Carbon Corporation, and ICCI will visit the Applied Research Laboratory to observe the operation of the SAP unit. The group will then travel to Ameren's Meredosia Power Plant where the SAP unit will be tested in April 2008.