BIOS, PHOTOS, ABSTRACTS – JULY 9, 2009

Gordon Maller – URS Corporation

BIO: Mr. Maller serves as a Principal Project Manager and Business Manager of the FGD aftermarket business area for URS Corporation.  As a Project Manager, he has directed projects, managed resources, and directed engineers and scientists in programs aimed at designing, constructing, optimizing, and testing flue gas desulfurization processes, and performing research to gain a better understanding of FGD process technology. Mr. Maller has worked with a number of utilities to upgrade and improve the operation and performance of their FGD systems and has worked with utilities to develop designs and specifications for new FGD systems.  Mr. Maller is an industry leader in upgrading older FGD systems and has developed a number of innovative technologies and processes to improve the performance and reliability of an older system to levels comparable to new FGD systems.  Mr. Maller’s responsibilities as Business Manager of the FGD Aftermarket business area is to develop work opportunities, complete sales, develop new technologies and provide overall technical and business leadership for engineering projects to upgrade the performance and reliability of existing FGD systems.

ABSTRACT: The Power Industry faces the issue that most of the existing, older flue gas desulfurization (FGD) systems were not designed to meet the emissions requirements that are currently being adopted or considered.  In addition, the development of technology to remove CO₂ from flue gas will require that even higher levels of SO₂ be removed than is currently possible with older and even new FGD systems.  The performance of older FGD systems is often limited by poor reliability and/or poor design and often has significantly higher operating costs than newer systems.  Technology currently exists, however, to upgrade the performance of these older FGD systems and correct the poor design problems that limit reliability.  These technologies include improved spray header design, enhanced spray nozzle technology, liquid and gas distribution rings and dual-flow trays.  Use of computer based modeling and simulation tools such as CFD is also beneficial in designing and engineering an upgrade.  With these technologies and the know-how to apply them, ultra high removal efficiencies in excess of 98% along with high system reliability can be achieved in older FGD systems.

Harald Reissner, AE&E

BIO: Harald Reissner has a vast background on Air Pollution Control (APC) technologies. Since his research activities at the University of Technology in Graz (master and doctoral degree in process engineering) he is working on dry and wet flue gas desulfurization technologies. A semi dry desulfurization process based on circulating fluidised bed technology - brand name Turbosorp^® - was successfully developed by his team in the last years. In his actual position as head of process technology his responsibility covers the process design of all APC technologies within the AE&E group.

ABSTRACT:

Spray bank design in the Open Spray Tower as a key requirement for achieving high SO₂ removal efficiencies

AE&E has installed several plants in the last 10 years achieving high SO₂ removal rates. These plants are using high sulphur coals in the boiler with SO₂ concentrations in the flue gas up to 5000 ppm. The experience shows, that especially a proper spray bank design is very important to reach high efficiencies up to 98 percent. Improved CFD modelling of the FGD absorber is a standard design procedure for such high removal applications and typical results from the cfd modelling are shown.

Kevin Smith - Carmeuse

ABSTRACT: The increasingly likelihood of CO₂ emission reductions from existing

coal-fired power plants being mandated will force electric utilities to begin studying their options. Most post combustion CO₂ removal technologies that exist or are under development expect SO₂ concentration to be less than 10-ppmv (~20-mg/Nm³). This presentation reviews the results of a comparative study of typical wet FGD methods

used to achieve extremely low emissions of SO₂ and other acid gases in flue gas.