SO₃ Measurement and Control was the Hot Topic July 15, 2010

Tom Adams, Kentucky Division for Air Quality (Energy and Environment Cabinet) explained that retrofitting SCR to existing power plants can cause some regulatory problems. The increase in sulfuric acid mist can run afoul of the PSD restrictions. In one case the problem was solved by sorbent additions to ensure that there was no mist increase.

Scott Evans, Vice-President for Regulatory Affairs at Clean Air Engineering, discussed the measurement of SO₃ and challenges caused by wet stacks and particulate. A lot of effort is going into the standardization of methods to insure more accurate measurement.

Dr. Curtis Laush, a Senior Scientist at Industrial Monitor & Control Corporation (IMAC), said that by year end they will have a QCL monitor to measure SO₃ accurately at less than 1 ppm. Their present FTIR is only capable of 100 ppm. A new thermal source would bring that down to 20 ppm.

Curt Biehn, Manager of Technical Sales & Marketing at Mississippi Lime Company, described pre-airpre-heater injection of hydrated lime for effective SO₃ removal. Injection ahead to the scrubber allows further reduction and also would improve the efficiency of the limestone slurry in reducing SO₂. Selenium removal results have been inconclusive.

Brian Adair, PhD, Catalyst Technology Manager at SCR-Tech, a CoaLogix Company, described a holistic approach to SO₃ control and a partnership with FLS to provide sorbent injection systems. Also he explained how catalyst renovation to close off some of the smaller pores where little NO_x is reduced but where SO₂ is oxidized results in better performing catalysts.

Sterling M. Gray, Manager of SBS Injection Technology at URS Corporation, discussed the SBS injection process for removing SO₃ from flue gases. Soda ash is mixed with water and injected as a liquid. Systems are quite efficient and are able to reduce SO₃ to 1 ppm.

The BIOS, ABSTRACTS AND PHOTOS can be viewed as follows: BIOS, PHOTOS, ABSTRACTS - JULY 15, 2010.htm

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

STERLING GRAY - URS

FGD Continuing Decision Process For: Products

Enhanced Plant Performance via Effective SO₃ Control. Presented by Sterling Gray, URS Corp. Hot Topic Hour July 15, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Sterling Gray - URS - 7-15-10.pdf

CURT BIEHN – MISSISSIPPI LIME

FGD Continuing Decision Process For: Products

Pre-APH Injection of Hydrated Lime Getting More from Your SO₃ Sorbent. Presented by Curt Biehn, Mississippi Lime. Hot Topic Hour July 15, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Curt Biehn - Mississippi Lime - 7-15-10.pdf

CURTIS LAUSH – IMACC

FGD Continuing Decision Process For: Multi-pollutant Requirements

Continuous and Real-time Measurement of SO₃ by FTIR and Quantum Cascade Laser, presented by Curtis Laush, Industrial Monitor and Control Corporation (IMACC). Hot Topic Hour July 15, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Curtis Laush - IMACC - 7-15-10.pdf

BRIAN ADAIR – COALOGIX

SO₃ Measurement and Control, presented by Brian Adair, CoaLogix. Hot Topic Hour July 15, 2010

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Brian Adair - CoaLogix - 7-15-10.pdf

TOM ADAMS – KENTUCKY DIVISION FOR AIR QUALITY
PSD & SAM, presented by Tom Adams, Kentucky Division for Air Quality. Hot Topic Hour July 15, 2010.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Tom Adams - Air Quality (Kentucky Div.) 7-15-10.pdf