The regulation and control of mercury emissions, along with mercury monitoring, are new to the power generation industry. However, B&W PGG has been actively involved in research and development, demonstration programs and implementation of mercury control systems since the early 1990s.
We can tailor a multi-faceted solution that considers many variables, such as the air quality control system, fuel, flue gas composition, flyash characteristics, stack mercury limits and many other operational factors.
You can trust the industry leader in power plant air emissions control technology to provide cost-effective mercury control solutions that are integrated into your power plant.
B&W PGG's mercury control options include:
- MercPlus System - B&W PGG designed the MercPlus system to enhance mercury capture and minimize PAC usage at power plants that use low chlorine coals, such as PRB.
- Absorption Plus (Hg)™ System - B&W PGG developed this patented technology to inhibit mercury re-emission and to increase the total mercury captured and retained in a wet FGD system.
- Powdered activated carbon (PAC) injection - A process that involves injecting powdered activated carbon (PAC) in flue gas in combination with a conventional spray absorption process to remove mercury.
- Sorbent Injection - It is a recognized concept that PAC can be poisoned by SO3 in the flue gas which reduces the PAC's ability to capture mercury. By injecting a sorbent such as trona or SBC prior to the PAC injection location, this poisoning can be reduced and allow the PAC to be better utilized.
- Toxecon™ - An equipment arrangement that adds a smaller baghouse after an ESP to act as a polishing device. This increases the effectiveness of the PAC by allowing it to remain exposed and react with the flue gas for a longer period of time. This polishing baghouse also collects the finer particulate and PAC that may not have been collected in the ESP.
- Toxecon II™ - This technology involves injection of PAC directly into and ESP after the primary fields. This arrangement allows for the ash collected in the first fields, typically 80-90%, to still be sold for use in concrete production since it does not contain any PAC.
- Flue gas desulfurization systems
- Fabric filter systems
For more information, please contact us.
B&W PGG provides customized mercury mitigation solutions depending upon specific variables such as the fuel being fired and the existing environmental equipment at the plant.