“Multi-emissions Control” was the Hot Topic on Thursday, May 20 and Friday, May 21, 2010

The speakers helped listeners understand the current situation regarding multiple pollutants; the potential rules and regulations and their timing; the multi-emission control technologies available and under development with their applicability, capabilities, and limitations and present other alternatives available to achieve compliance with the expected regulations. Speakers included:

Phil Boyle, President and COO of Powerspan Corp., covered three variations of the multi-pollutant system. One includes both NO_x and SO_x removal along with capture of toxics. Another eliminates the NO_x capture. The third involves CO₂ capture. Powerspan achieves low emission rates on toxics. On NO_x capture the efficiency is a function of size and capital cost.  So for very large removal needs the NO_x portion may not be competitive. In this case an SCR can precede the system. A new solvent is being used for CO₂ capture. The cost per ton captured is estimated at $37.

David S. Helm of Sargent & Lundy, LLC summarized all the possible multi-pollutant regulations in a series of easy to follow charts and tables. You will find this presentation very informative.

Rod Gravley, Technology Director at Tri-Mer Corporation described a filter technology which is based on a new generation of ceramic-coated fibers. This allows operation of the system up to 1650^oF, while consistently achieving outlet concentrations below 0.001 grains/dscf, even with submicron PM loadings greater than 1.0 - 2.0 grains/dscf.  At the same time, SO₂ can be removed with sorbent injection. Most importantly, a variation of the filter has an SCR catalyst manufactured into the filter itself, thus allowing simultaneous removal of NO_x, up to 95 percent with simple urea injection. The result is a single system that can remove PM, SO_x, and NO_x at very high levels of efficiency. Mercury removal is also an option. There is an installed base of over 400 applications in Europe. There was discussion as to why this was not being offered to the power industry. The target has been smaller applications. But Bob McIlvaine pointed out that the history of the pulse jet filter was first to be used at smaller scale installations and then penetrating the power industry.

Heidi E. Davidson, Technical Development Engineer SOLVAir^® Products at Solvay Chemicals, Inc., discussed the use of dry sorbent injection (DSI) with sodium bicarbonate or trona to control acid gases, including HCl, HF, SO₂, and SO₃, while enhancing mercury capture.  DSI provides a low-capital alternative for treating flue gas at power plants. HCl is actually captured with a higher efficiency than SO₂.

Paul Farber of Sargent & Lundy LLC discussed the recently released industrial boiler MACT.  The MACT calls for control of particulates, mercury, total selected metals, HCl and organics including dioxins/furans.  It is reasonable to expect that a similar group of emissions will have to be controlled with the upcoming Utility MACT.  The most economical approach to meeting these MACTs will be control technologies that can reduce more than one pollutant.  In many cases these multi-pollutant control technologies exist today as single or combinations of conventional equipment. 

Stratos Tavoulareas, Energy Technologies Enterprises Corp. (EnTEC), explained that ReACT, a multi-pollutant control technology, is commercially available abroad and has very high proven collection efficiencies for SO_x (both SO₂ and SO₃), NO_x and mercury. New power plants are utilizing it, confirming further its efficiency and cost-effectiveness. As of 2009, ReACT is available under commercial terms in the US through Hamon Research Cottrell. It is economically attractive for medium and low sulfur coals. Based on extensive commercial use outside the U.S. there is no reason to anticipate any problems implementing it in the U.S.

The Bios, Abstracts and Photos can be viewed as follows: BIOS, PHOTOS, ABSTRACTS - MAY 20-21, 2010.htm

The individual slides can be viewed in the FGD Decision Tree as follows:

PHIL BOYLE - POWERSPAN

FGD Continuing Decision Process For: Products

Update on Multi-Pollutant Control and CO₂ Capture Technology, presented by Phil Boyle, Powerspan. Hot Topic Hour May 20, 2010.
http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Phil Boyle - Powerspan - 05-20-10.pdf

DAVID HELM – SARGENT & LUNDY, LLC

FGD Continuing Decision Process For: Multi-pollutant Reduction Needs

Regulatory Drivers in the Power Industry, presented by David Helm, Sargent & Lundy, LLC. Hot Topic Hour May 20, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/David Helm - Sargent & Lundy LLC - 05-20-10.pdf
 

ROD GRAVLEY – TRI-MER

FGD Continuing Decision Process For: Toxic Metals

UltraTemp Filtration System, presented by Rod Gravley, Tri-Mer. Hot Topic Hour May 20, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Rod Gravley - Tri-Mer 5-20-10.pdf

HEIDI DAVIDSON – SOLVAY CHEMICALS

FGD Continuing Decision Process For: Products

Dry Sorbent Injection of Sodium Sorbents for Multi-pollutant Control. Presented by Heidi Davidson, Solvay. Hot Topic Hour May 21, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Heidi Davidson - Solvay - 05-21-10.pdf

PAUL FARBER – SARGENT & LUNDY, LLC

Industrial Boiler MACT, presented by Paul Farber, Sargent & Lundy,  LLC. Hot Topic Hour May 21, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Paul Farber - Sargent & Lundy, LLC 05-21-10.pdf

STRATOS TAVOULARES – ENTECH (J-Power)

FGD Continuing Decision Process For: Products

ReACT - An integrated multi-pollutant control technology now available in the US. Presented by Stratos Tavoulares, EnTech. Hot Topic Hour May 21, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Stratos Tavoulareas - Energy Technologies 05-21-10.pdf