Roland Zepeck

JCT Analysentechnik GmbH , Austria

Biography:

Born in 1950 he was educated as Chemical Engineer (Process Chemistry) and worked during his professional career in multiple assignments for various companies around the world in both Environmental Monitoring as well as Combustion Technology (mainly Thermal Power Generation). Presently he serves as Sales Director of JCT Analysentechnik GmbH, Wiener Neustadt, Austria.

In Environmental Monitoring, the assignments included R&D for various environmental analyzers (Dust, Mercury, Total Hydrocarbons, SOX, NOx, CO, O2, O3), systems design for air quality monitoring stations and networks, systems design for Continuous Emission Monitoring Systems, and design of Emission Monitoring Sampling Systems (both dilution based as well as direct sampling based).

The assignments in the field of Combustion Technology were focused around visualization, thermal analysis, and optimization of thermal processes, specifically fossil-fueled boilers (mainly hard coal and lignite). Espe-cially extensive work has been carried-out in the design of controls to rectify boilers burning low-quality coals with high ash content and lignite with high water content and therefore faced with disturbed and inefficient combustion, significant slagging, and multiple boiler trips. In South Africa, he cooperated in research activities investigating the unique problems with burning South African coals and the consequences to the Power Generation Industries.

He has published multiple publications, papers, and given presentations on various aspects of Environmental Monitoring and Combustion Technology in domestic and Intl. journals and on Intl. conferences.

Short description about presentation:

Mercury (Total Hg or Speciation-Hg), Ammonia (NH3) and Nitrogen Oxides (NOx) after DeNOx-Scrubbers, Particulates and Gaseous Pollutants after Wet FGD (Flue Gas Desulphurisation): More and more Pollutants are added, especially also in India, to the list of Pollutants to be monitored continuously in Emissions, and this in often not simple matrixes. Influences from the Stack Gas Matrix (moisture, condensation, reactive components) plus unwanted secondary reactions in the sampling systems on the way to the analyzers complicate the Continuous Emission Monitoring Systems (CEMS) and influence the accuracy of the measurements. These effects not only challenge the analyzers, but in many ways the Sampling and Conditioning Systems for extractive CEMS. The Sampling and Sample Conditioning Systems highly influence the overall accuracy of CEMS and the operational stability of the analyzers. Special care has to be taken in the design of the Sampling and Conditioning Systems for automatic CEMS analyzers, specifically for these challenging pollutants and challenging stack gas matrixes to avoid changes in the sample gas and resulting incorrect measurements and increased maintenance requirements. The paper describes simple but effective solutions for sampling systems for continuous Total Mercury and Speciation-Mercury Analyzers, High-Temperature Sampling Systems for Ammonia and Nitrogen Oxides Analyzers as well as Boiler-Outlet CO Monitors, specifically in the presence of very high dust concentration, as well as continuous sampling systems for wet stack situations (stack gas below the dew point). Design features and examples for practical experiences (case studies) will be shown and discussed.