1. Mercury sorbents The hot topic on July 31 will focus on the dry sorbents which are used to capture mercury.
The discussion will be based on presentations posted on a dedicated website Mercury Removal -Continuous Analyses . The specific topics will be Which absorbent provides the best combination of cost and efficiency?
• Activated carbon
• Impregnated activated carbon
• Non carbon sorbents
• Fixed sorbents such as gold amalgamation and the Gore membrane module
How important is flyash salability and how does this affect the decision making:?
What are injection considerations?
• How is the best way to store , inject and distribute the carbon
• Where should the carbon be injected
• If both an alkaline reagent and AC are injected where are both injected.
• If a precipitator rather than baghouse is in place, how much more carbon will be needed?
• Should I inject bromine with the coal and then use non impregnated AC
• Will activated carbon recirculating in a wet FGD allow mercury separation from gypsum and wastewater.
Other relevant questions
• How much selenium can be removed along with mercury?
• How will mercury removal vary with site specific conditions?
• Will there be an adequate supply of reagent?