WESP and RTO systems at a Pellet Plant in Hamlet, NC, USA

Volatile Organic Compounds (VOC) Abatement

Volatile Organic Compounds (VOCs) are hydrocarbon-based gases emitted from industrial processes such as coating, chemical manufacturing, and biomass treatment. Due to their photochemical reactivity and environmental risks, VOCs require efficient abatement technologies.

Types of Thermal Oxidizers

Thermal oxidizers can vary in size, shape, and configuration but all operate on the same principle: thermal combustion/oxidation.

ANDRITZ Geoenergy® has two designs thermal of oxidizers:

Regenerative Thermal Oxidizers (RTO) – Most common, high thermal efficiency.
Regenerative Catalytic Oxidizers (RCO) – Use catalysts to oxidize pollutants at lower temperatures.

Geoenergy® RTO

Geoenergy® RCO

Regenerative Thermal Oxidizers (RTOs) and Regenerative Catalytic Oxidizers (RCOs) are advanced systems designed to destroy VOCs through high-temperature oxidation and catalytic conversion, respectively.

These technologies are central to ANDRITZ's clean air portfolio, supporting industries from wood to minerals industries with tailored emission control solutions.

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.

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.

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

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)).

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.

Service, retrofit and modernization

Clean Air Technologies – Clean environment for a better tomorrow

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For general questions related to ANDRITZ´s clean air technologies (new-build, upgrades & retrofits, inspections, services, spare parts, land-based or maritime equipment), please contact us.