Emissions control systems fall victim to corrosion

Duke Energy is joining the Electric Power Research Institute (EPRI) and 16 other utilities to find out what is causing corrosion in emissions control technology such as scrubbers, according to the Charlotte Observer. Duke reportedly has spent $5 million to fix the problem in many of the utility’s scrubbers over the past two years.

EPRI was quoted as saying about 25 of the 160 wet scrubbers in North America have documented cases of corrosion.  The corrosion pits the metal-alloy inner walls of the scrubbers and has affected new and old units. The alloy linings were expected to need less maintenance in scrubbers scheduled to operate for 25 years but some have reportedly corroded through in as little as 11 months.

Some utilities reportedly are installing linings and coatings to protect the alloys while others may place a thin layer of corrosion-resistant metal over the alloys. Progress Energy, another participant in the study, said it lined its scrubbers with tile that protects the alloys from high temperatures, pressures and solvents.

Scrubbers use a limestone slurry on flue gases released from coal-fired power plants. The slurry absorbs sulfur dioxide and mercury from the flue gases and keeps it out of the air.

Read more equipment news

Did You Like this Article? Get All the Energy Industry News Delivered to Your Inbox

Subscribe to an email newsletter today at no cost and receive the latest news and information.

 Subscribe Now


Logistics Risk Management in the Transformer Industry

Transformers often are shipped thousands of miles, involving multiple handoffs,and more than a do...

Secrets of Barco UniSee Mount Revealed

Last year Barco introduced UniSee, a revolutionary large-scale visualization platform designed to...

The Time is Right for Optimum Reliability: Capital-Intensive Industries and Asset Performance Management

Imagine a plant that is no longer at risk of a random shutdown. Imagine not worrying about losing...

Going Digital: The New Normal in Oil & Gas

In this whitepaper you will learn how Keystone Engineering, ONGC, and Saipem are using software t...