Special Report. Mercury Control: Future of national mercury rule now uncertain

Power, May 2008

Increased SOface= Subscript; 2face=-Subscript; removal (producing valuable credits).

Increasing the amount of flue gas scrubbed.

Increasing mercury removal efficiency.

Allowing the plant to use a higher-sulfur coal or pet coke or fuel oil.

The use of a limestone forced-oxidation FGD system to yield wallboard- and/or cement-grade gypsum.

The ability to test larger atomizer drives in an existing SDA/FGD.

Increased reliability of an existing FGD system.

The ability to repair severe corrosion of FGD system materials.

face= Bold; --Christopher Wedigface=-Bold; (christopher.wedig@shawgrp.com) is a senior technology specialist with the Power Group of The Shaw Group. face= Bold; Dr. William Frazier, PE face=-Bold; (william.frazier@shawgrp.com) is an executive environmental consultant for Stone & Webster Management Consultants, Inc., a Shaw Group company. face= Bold; Ethan Begg, PEface=-Bold; (ethan.begg@shawgrp.com) is a client program manager with the Environmental & Infrastructure Group of Shaw Group.