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 flue gases. A high-voltage source generating a corona current charges the PM, which moves to the collecting plate. PM is removed from the plate by means of flushing water.

Advancements in ESP technologies from ANDRITZ over the past decade, more particularly with the development of switched integrated rectifiers (SIR) for ESP energizing, have provided continuous improvements in PM removal efficiency. As one of the oldest technologies applied in clean air technologies, especially when addressing acid mists, aerosols and hazardous air pollutants, a wide range of robust and reliable wet ESP designs are available from ANDRITZ for a variety of industrial and power generation applications.

EKP Unit 2 - ANDRITZ Wet Electrostatic precipitator (WEST)

The key features of ANDRITZ wet electrostatic precipitators are:

Ultra-low outlet PM emissions as low as 0.5 mg/Nm³ and SO₃ emissions below 1 ppm
Removal efficiencies of up to 99%
Can be adapted to small or moderate volumetric flows of flue gas
Industrial and electricity generation applications, with over 80 references worldwide
Can be used as “polishing” APC equipment to control acid mists, submicron PM (as small as 0.01 μm), mercury, metals, and dioxins/furans
Horizontal and vertical designs
4^th generation of switched integrated rectifiers (SIR) as high-frequency power supply and/or integrated ESP control systems for conventional transformer rectifiers (T/R), both with energy optimization algorithms (EPOQ, power down rapping, …)

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

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 migrate to the collecting plate. PM are removed from the plate by a knocking action.

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)).

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