Catalytic ceramic filter for flue gas emission control
In industrial settings with high-temperature processes, managing emissions from flue gases typically involves dealing with particulates, acidic gases, and NOx. Traditional methods require multiple steps, increasing complexity and operational costs.
Remove particulates, acidic gases, and Nox simultaneously
The BisCat catalytic ceramic filter from GEA is a multifunctional solution designed to address these challenges. This filter integrates three critical processes – dedusting, acid gas removal, and NOx reduction – into one unit. Utilizing ceramic filter elements with an embedded catalyst matrix, it eliminates the need for separate selective catalytic reduction (SCR) reactors by injecting ammonia upfront. The filters are chemically inert and corrosion resistant, ensuring longevity and stability. They operate at high temperatures without requiring flue gas cooling, preserving thermal energy. Each filter module can be maintained independently while others continue operating, thanks to a multi-compartment housing system. The system also includes compressed air jet pulses for online cleaning. Capable of handling large volumetric flow rates, the BisCat filter provides advanced emission control with very low dust emissions (< 2 mg/Nm3). The rigid candle structure of the filter elements enhances surface filtration and supports absorption processes for removing HF, HCl, and SOx through lime-based injections.
Benefits
- Combines three emission control steps in one unit
- Chemically inert and corrosion-resistant filter elements
- Operates at high temperatures without flue gas cooling
- Maintains filters independently, ensuring continuous operation
- Very low dust emissions, enhancing environmental compliance