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CO2 Scrubbing - Coal Fired Power Plant

02/17/2008 3:18 PM

Looking for information regarding instruction on CO2 Scrubbing - Coal Fired Power Plant. Any materials or training devices would be appreciated.

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#1

Re: CO2 Scrubbing - Coal Fired Power Plant

02/17/2008 11:07 PM

You won't find much on this subject, unfortunately. Most of the information available for coal plant exhaust scrubbing concerns flue gas desulfurization (FGD), the removal of SO2 gas from coal-burning exhaust, due to concerns about acid rain. However, both SO2 and CO2 are acidic gasses, so scrubbing the exhaust with a strong alkali will remove both very effectively.

If you're still interested to learn more about gas scrubbing, an excellent place to get information is the following website:

http://www.epa.gov/apti/

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#2

Re: CO2 Scrubbing - Coal Fired Power Plant

02/18/2008 9:55 AM

The key material investment for the industry for scrubbers is Duplex Stainless Steels. B&V is working on some composite coating technology. Crushed lime stone is the material of choice for scrubbers. There are two (for the most part) types of scrubbers, wet and dry. You guessed it, the wet one is more efficient but creates more of a problem when it comes to corrosion. Just say no to resin based liners. Crack is just as bad here as on the streets.

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#3

Re: CO2 Scrubbing - Coal Fired Power Plant

02/21/2008 1:25 PM

Alstom Power completed a study with DOE (Dept. of Energy) and AEP (American Electric Power), in which several CO2 removal processes were evaluated using a unit at AEP's Conesville as a hypothetical host site. It was determined that there are no significant technical barriers to CO2 reduction, but that the cost and energy penalty incurred by the installation and use of CO2 reduction technologies would be significant. The capital cost would be roughly equivalent to the capital cost of constructing a coal-fired unit with modern emission controls for other pollutants. The energy lost in the CO2 capture process would be somewhat over one-third of the total output of the generating unit. This information will help define future research needs and the economics of such applications.

Excerpt from a report by:

OHIO COAL DEVELOPMENT OFFICE

OHIO AIR QUALITY DEVELOPMENT AUTHORITY

There is a book available on this subject also, "Carbon Dioxide Removal from Coal Fired Power Plants (Energy and Environment 1)" by C. Hendrix. You can find it at Amazon.com

The link below will take you to a document discussing CO2 Capture Options. There are several references cited.

www.netl.doe.gov/publications/proceedings/01/carbon_seq/p6.pdf

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