ESP Electrostatic Precipitator 3D white-computer generated image

Dry Electrostatic Precipitator (ESP)

The ESP uses electrical forces to remove particulate matter (PM) from the flue gases. A high-voltage source generating a corona current charges the PM, which migrates to the collecting plate. PM is removed from the plate by a rapping sequence.

Advancements in ESP technologies at ANDRITZ over the past decade, more particularly with the development of switched integrated rectifiers (SIR) for ESP energizing, have produced continuing improvement in PM removal efficiency as well as reducing capital and operating costs and also footprint. As one of the oldest technologies applied in clean air technologies, ANDRITZ offers a wide range of robust and reliable ESP designs for a variety of industrial and power generation applications.

The key features of ANDRITZ Dry Electrostatic Precipitators:

Flexible layout and modular design
Can be adapted to small (ELPAC) or very large volumetric flows of flue gas
Multiple electrodes/rapping designs
Tumbling hammer and electric impact rapping systems
Industrial and power generation applications, with over 2,500 references worldwide
Extensive experience with a wide range of fuels (low-sulfur and high-resistivity coal/ash, 100% biomass, …)
4^th generation of switched integrated rectifiers (SIR) as high-frequency power supply or/and integrated ESP control systems for conventional transformer rectifiers (T/R), both with energy optimization algorithms (EPOQ, power down rapping, …)
Removal efficiencies of up to 99.95% (dPM > 5 µm)
Outlet PM emissions as low as 10 mg/Nm³

ANDRITZ SIR (Switched Integrated Rectifier) models

The SIR (Switched Integrated Rectifier) reduces the particulate emission level and improves ESP overall performance without the need of costly extensions. ANDRITZ provides a robust and reliable technology with the highest expertise and service capabilities in air pollution control. ANDRITZ now offers a wide range of its advanced high voltage power supplies for electrostatic precipitators.

SIR - Zero point analysis tool

Developed to give an overview of the potential energy savings by upgrading your ESP power supplies to ANDRITZ SIR high frequency power supplies

ANDRITZ EcoTeq™ Filter Bags

A bag is more than just a wear part - it is a critical factor in the performance of the filter system. Delivering sustainable Quality for Superior Filter Performance.

Fabric Filters (FF)

The Fabric Filter (or baghouses or bag filters) uses a filter media to separate Particulate Matter (PM) from the flue gases. The Particulate Matter are deposited at the surface of the fabric filter which may be made of different materials depending on the flue gas physical and chemical composition. The dust is removed periodically when cleaning the bags.

Hybrid Filters

Hybrid Filter is a combination of ESP and FF with several configurations (in serie and in the same casing (integrated) or in separated casings in serie or in parallel (separated)).

EKP Unit 2 - ANDRITZ Wet Electrostatic precipitator (WEST)

Wet Electrostatic Precipitator (WESP)

As for the dry ESP, the wet ESP uses electrical forces to remove Particulate Matter (PM) from the flue gases. A high voltage source, generating a corona current, charges the PM which migrate to the collecting plate. PM are removed from the plate by flushing water.

Service, retrofit and modernization

Clean Air Technologies – Clean environment for a better tomorrow

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