31 July 2006 -- Babcock Power Environmental Inc. (BPEI) announced that it has recently received a contract from AES for the design and supply of a multi-pollutant control system for Unit #4 at AES' Greenidge Station power plant located near Dresden, New York, US.

This project is sponsored by the U.S. Department of Energy's (DOE) Power Plant Improvement Initiative with a goal of demonstrating a multi-pollutant control system to reduce emissions from smaller coal-fired plants for less money than it costs to control NO_x and SO₂ separately. Pittsburgh-based CONSOL Energy is the prime contractor under the DOE Cooperative Agreement and will be responsible for project administration, performance testing, and reporting. DOE's National Energy Technology Laboratory manages the CONSOL project, as well as the Power Plant Improvement Initiative projects.

The multi-pollutant control system offered by BPEI will reduce NO_x emissions, SO_x emissions, particulate matter, mercury and acid gases (SO₃, HCl, and HF).

Included in the scope are the following:

• low NO_x burner upgrades to the existing tangential firing system and separate overfire air system


• combined Selective Non-Catalytic Reduction/Selective Catalytic Reduction (SNCR/SCR) system for further NO_x removal


• Dry Circulating Bed Flue Gas Desulfurization (DFGD) scrubber for SO_x reduction


• mercury removal through carbon injection directly into the scrubber

Riley Power Inc., a subsidiary of Babcock Power Inc., will provide the low NO_x burner upgrades and the SCR(1), while BPEI will utilize licensed Turbosorp technology from Austrian Energy & Environment AG for the DFGD. BPEI will also collaborate with Fuel-Tech N.V. on the post-combustion SNCR control system portion of the hybrid NO_x reduction system.