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- MHPS - Enhanced All Dry Scrubber System
MHPS - Enhanced All Dry Scrubber System
The Mitsubishi Hitachi Power Systems Enhanced All-Dry (EAD™) scrubber is a simple and flexible technology for multi-pollutant control. Obtained through a license agreement with Solios Environment (formerly Procedair), this patented dry scrubber technology was developed in the 1980s and is the original “Enhanced” All-Dry process. The process employs an entrained flow absorber, lime/ash humidifying mixer and our fabric filter technology to effectively remove pollutants in utility applications to meet new MATS / CSAPR requirements. We are applying the EAD™ scrubber technology using a modular approach which provides both greater operating flexibility and reliability.
Simple and Reliable Process
- Reaction occurs in an entrained flow vertical duct with no internals, which is preferred over the more complex fluidized bed processes.
- Reliable, proven equipment with low maintenance
External Reagent Humidification
- Enhances system reliability by separating reagent humidification and sulfur capture steps. No slurry preparation, no wall build-up.
Multi-pollutant Control
- Meet U-MACT (MATS) requirements of mercury, HCl and PM as well as SO2, and SO3/SAM
Modular Design
- Allows unlimited scrubber capacity and wide turndown capability and enhances system layout flexibility.
Low Pressure Drop and Power Consumption
How Does Enhanced All-Dry Scrubber Work?
- Entrained flow absorber– no fluidized bed
- Venturi nozzle – promotes turbulence / mixing
- Humidified ash and lime – enhances reactions on sorbent surface and cools flue gas to optimum reaction temperature
- Solids recirculation – produces very high apparent stoichiometric ratio
- Vertical column - additional reaction time and complete drying
- Fabric filter – collection, additional reaction, recycle
