Detroit Edison
Monroe, Michigan

Contract Order

Units 3 & 4: 2006
Units 1 & 2: 2010

Commercial Operation

Units 3 & 4: 2009
Unit 1: 2013
Unit 2: 2014

Overview

The wet flue gas desulfurization (FGD) system from Babcock & Wilcox (B&W) features a combination of design components to provide a high level of reliability and removal efficiencies. These include B&W’s signature tray tower design that provides excellent gas-to-liquid contact and uniform flow distribution through the absorber spray zones; its patented inlet awning; interspatial spray headers to reduce absorber height, pump power requirements, and internal support costs; forced oxidation system; and advanced mist eliminators.

Boiler/Plant Information

• (PRB)/bituminous coal blend
• Design fuel: Powder River Basin
• Boiler type: Pulverized coal
• 4 x 825 MW (3,300 MW total)

Project Summary

B&W provided engineering, procurement and construction of the wet FGD system. The system is designed to remove 97% of the entering sulfur dioxide (SO2) without organic acid addition, at an optimal combination of reduced absorber liquor recirculation (L/G) versus tray pressure drop. The system utilizes limestone reagent with forced oxidation to a gypsum byproduct. There is one absorber per unit.