Power Industry Webinar Production & Promotion

Dual Flow Tray wFGD Technology – A Very Cost Effective Solution for Coal Plants Facing Tightening Air Emissions Regulations in the USA and Europe

Specific topics to be addressed:

• The timetable for U.S. and EU regulations covering SO2emissions

• Explanation of wFGD dual flow tray design technology

• Limitations of conventional open spray chamber wFGD designs

• Dual flow tray design advantages

• Absorber sizing for DFT tower and open spray tower for a 500 MW site

• DFT technology for performance upgrades

• Case Study of a DFT upgrade

This informative webinar, presented by Michael T. Hoydick of Amec Foster Wheeler, will describe the benefits of dual flow tray wFGD technology versus conventional open spray chamber wFGD designs.

Below are some of the questions discussed during the webinar:

• Approximately how long does it take to install a new DFT into an existing absorber?

• Will the addition of a DFT improve current mercury and sulfuric acid mist removal?

• Are there any special precautions with boiler unit startup associated with DFT absorbers?

• Will a DFT retrofit have an impact on the scrubber's effluent discharge to meet the proposed ELG rule?

• How does this technology work when you are challenged with a higher oxidation reduction potential?

• What is the highest superficial velocity of dual flow tray design? What is the hole size and % open area of the tray? What is the typical pressure drop per tray?

• What are the typical CAPEX and OPEX for a 500 MW wet FGD with DFT? What is the maximum MW design for a single absorber?

• Would the wall rings be added to the existing trays that are not dual flow?

• How would you convert a 1970 marble bed venturi scrubber/natural oxidation FGD to an Oto wet LS forced oxidized wet FGD?

• What type of reactor is the CAPEX saving based on when adding the DFT compared to an open tower? Concrete or steel?

• Can the Hg removal be increased by installing the DFT?