Reagents Hot Topic Hour on March 5 Covered Two Pollutants and Several Calcium Forms

The Hot Topic Hour yesterday was a good balance. There were lime and limestone presentations and there were materials and equipment suppliers offering their expertise.

Mike Schantz, Director, New Business Development, Lhoist/Chemical Lime Company, provided a very thorough coverage of lime usage from SO₂ and SO₃ removal to usage with flyash to eliminate ponding. He pointed out that lime will be of increasing interest to utilities facing CO₂ capture and sequestration. A utility with both wet and dry FGD systems can combine the residues and create a stabilized product.

Kevin P. Furnary, CEO, LEEP Holdings, LLC, and President, Balkrete, Inc., described a slaking system used in Australia. The system is said to provide more surface area than conventional slakers.

Bob Sommerlad is a consultant these days. He has been researching the options for grinding FGD limestone. He presented information in an earlier McIlvaine webinar which showed that dry grinding was superior from both a cost and performance perspective. Yesterday he built upon the earlier work to show how data obtained by Mississippi Lime compares. Dry grinding is already being used on a regional basis.

Bob McIlvaine, McIlvaine Company, covered two subjects. One was the reduction in environmental burden from the use of lime to achieve 98 percent SO₂ removal. Since the burden reduction is 100 times greater for a ton of SO₂ than a ton of CO₂ and since the cost of that reduction is less, it makes more sense to focus on maximizing SO₂ reduction prior to or in conjunction with CO₂ reduction.

Another subject was the dilute acid approach to cellulosic ethanol. It is a possible winner. It involves adding lime to the acid/sugar solution and then using a centrifuge to separate the gypsum from the sugar solution. This process could potentially generate huge amounts of waste lignins for co-firing in coal generators while using the waste steam from those generators.

Bio can be accessed at March 5, 2009 Bio Mike Schantz.htm

The individual power points are in the FGD Decision Tree and can be viewed as follows:

Mike Schantz – Lhoist-Chemical Lime

FGD Continuing Decision Process For: Products

Lime usage from SO₂ and SO₃ removal to usage with flyash to eliminate ponding. Presented by Mike Schantz, Lhoist-Chemical Lime. Hot Topic Hour March 5, 2009.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Mike Schantz - Chemical Lime - March 5, 2009.pdf

Kevin Furnary – LEEP Holdings

FGD Continuing Decision Process For: Products

Advanced Equipment Development for Wet Lime FGD System Use, presented by Kevin Furnary, LEEP Holdings. Hot Topic Hour March 5, 2009.

http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Kevin Furnary, LEEP Holdings, LLC - March 5, 2009.pdf
 

Robert Sommerlad - Consultant

FGD Continuing Decision Process For: Size Reduction

Wet vs. Dry Limestone Grinding, presented by Robert Sommerlad. Hot Topic Hour March 5, 2009.
http://www.mcilvainecompany.com/FGD_Decision_Tree/subscriber/Tree/DescriptionTextLinks/Robert Sommerlad 3-5-09 Wet vs Dry.pdf