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Hg PAC Optimization with the Griffin AI Toolkit

Published: October 22, 2020

PAC Feedrate Optimization For Lower Opacity & Improved Mercury Emissions

Powdered activated carbon (PAC) injections for the removal of mercury (Hg) from combustion emissions can be costly and have adverse effects on other aspects of the combustion system – primarily exit gas stream opacity out of the stack.

It is preferable to inject only the minimum necessary amount of PAC to lower mercury below limits while not wasting PAC material and inflating opacity measurements. Common PAC injection control systems operate very slowly due to the nature of the adsorption process and the extremely low concentrations of mercury; however, the effects of injection can rapidly raise opacity, often beyond acceptable limits, requiring manual corrective actions. This often creates a cycle of control movements that culminate in the entire process performing inefficiently.

However, there exists an opportunity to intelligently balance priorities and optimize PAC injection rates to remove mercury while controlling opacity and minimizing PAC usage.

Advanced AI & No-Code Implementation for Rapid Results

The Griffin Open Systems’ Hg PAC Optimization application prioritizes multiple objectives in real-time to achieve optimal performance of your system while staying within all process limits. Through an advanced method of prioritization, long- and short-term objectives of multiple parameters are considered and respected, leading to overall improved performance.

The Griffin Open Systems’ Hg PAC Optimization application can be implemented in an agile manner. Requiring minimal I/O and leveraging its user-friendly no-code interface, operators and engineers don’t need to change code in any systems allowing the application to be implemented in as quickly as one week.

What to Expect from the Griffin Hg PAC Optimization Application

As the application can be implemented in an agile manner, engineers and operators can expect to see as high as a 15% – 20% reduction in PAC injection while lowering the amount of high opacity events and maintaining or improving mercury emission rates.

We at Griffin Open Systems look forward to aiding you in achieving optimal performance of your cooling towers as well as all systems within your process. Please contact us to learn more about our many solutions today!

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