Dürr Megtec LLC

Our experience includes installations in the wood products and pelletizing industries, regenerative and metallurgical sulfuric acid plants, petroleum refineries, and waste-to-energy applications.

Wet ESPs are a proven polishing filter for reducing sulfuric acid mist, fine particulates, condensed metal fumes and organics, especially where a wet solution is preferred to minimize the capture of condensable particulate.

  • Low operating and maintenance costs
  • Ultra-low particulate emissions (solids, mist and fine particulate)
  • Total system capability for integration with other pollution control devices

Materials of Construction
We offer all-steel and all-alloy designs, with materials chosen based on specific applications.

Modular Design
Wet ESP modules are shop-fabricated, allowing for easy transport.

Small Footprint, High Structural Strength
The hexagonal, common-wall tubes provide high structural strength and minimize materials of construction. With a lower overall weight and smaller footprint, our design is more economical to construct and install.

Reliable Rigid Discharge Electrode Design
Our rigid discharge electrode (RDE) design is based on years of research and commercial experience to match the specific application.

Gas Flow Distribution
Perforated plates are used to distribute the flue gas evenly across the collection tubes to maximize performance. We utilize computational fluid dynamics (CFD) and scale modeling to optimize the design and assure uniform flow distribution.

HV Frame
The high-voltage system consists of a rigid frame suspended on insulators. The insulators are located in compartments removed from the flue gas stream, thus avoiding contamination due to wetting and particle deposition.

Low-Maintenance Insulators
High-strength alumina ceramic insulators are mounted in easily accessible compartments. The insulator compartments are designed to keep the insulators warm and dry and away from exposure to the process gas stream and contamination. Typically, insulator compartments are purged with cleaned, dry heated air for this purpose.

Effective Water Usage
The self-forming water film minimizes clean water usage by reducing flushing requirements. Wet ESP effluent can be recirculated to the pre-scrubber or saturation system.

Accurate Voltage and Current Control
Each wet ESP features its own microprocessor-based voltage controller and transformer/rectifier (T/R) set. Complete instrument and diagnostics for voltage and current control is provided.

Wet ESP Pilot Plant
A mobile gas cleaning pilot system is available for on-site performance demonstration and data collection, as is also designed to analyze outlet emissions at various operating conditions. The pilot system includes advanced switch mode power supply (SMPS) technology, variable frequency drive, and fully automated PLC and HMI controls.

Aging technology and lack of support from some original equipment manufacturers has resulted in lost productivity and reduced efficiency for many electrostatic precipitator systems. Dürr Megtec’s ESP aftermarket parts, service and upgrade business provides engineered upgrades, quality components and services to help keep your ESP running efficiently and effectively.

Our combination of innovative products and services include:

  • Collector plates
  • Rapper components and parts
  • Access doors and door seals
  • Upgrades, rebuilds and conversions
  • Field services

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The wet electrostatic precipitator (ESP) provided by Babcock & Wilcox MEGTEC (B&W MEGTEC) offers highly efficient control of submicron particulate, heavy metals, acid mists and condensed metal fumes and organics. Our experience includes more than 150 installations in the wood products and pelletizing industries, regenerative and metallurgical sulfuric acid plants, petroleum refineries and petrochemical plants.

Many of our customers have operated their plants for years with wet particulate scrubbers, like our venturi-type designs. Following stricter regulations for opacity, filterable and condensable emissions, the industry relied more on the polishing downstream by wet ESPs for compliance.

Adding wet ESPs to existing wet scrubbers reduced the net total pressure drops, which helped to achieve the new emissions limits.

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We can offer all steel and all-alloy material wet ESP designs, with materials chosen based on specific applications.

Reliable Rigid Discharge Electrode Designs
Our rigid discharge electrode designs have been carefully chosen through years of research and commercial experience to match the particular application. For example, our discharge electrodes for the wood products industry will be different from that for an acid plant application. While both will utilize our proven hexagonal-shaped collector electrode design, our experience allows us to combine our upflow and downflow wet ESP experience to provide the most competitive solutions for your equipment requirements.

Gas Flow Distribution to Assure Flow Quality
Perforated plates are used to distribute the flue gas evenly across the collection tubes to maximize performance. We utilize computational fluid dynamics (CFD) and scale modeling to optimize the design to assure uniform flow distribution.

High Voltage Frame
The high voltage system consists of a rigid frame suspended on insulators. The insulators are located in compartments removed from the flue gas stream thus avoiding contamination due to wetting and particle deposition.

Low Maintenance Insulators
High strength alumina ceramic insulators are mounted in easily accessible compartments. The insulator compartments are designed to keep the insulators warm and dry and away from exposure to the process gas stream and contamination. Typically, insulator compartments are purged with cleaned, dry heated air for this purpose.

Effective Water Usage
The self-forming water film minimizes clean water usage by minimizing flushing requirements. Wet ESP effluent can be recirculated to the pre-scrubber or saturation system.

Accurate Voltage and Current Control
Each wet ESP features its own microprocessor based voltage controller and transformer/ rectifier (T/R) set. Complete instrument and diagnostics for voltage and current control is provided. B&W MEGTEC utilizes the well-proven and fast-acting SQ-300® series automatic voltage controllers for single-phase and three-phase power supply.

Small Footprint, High Structural Strength
The hexagonal, common-wall tubes provide high structural strength and minimize materials of construction. With a lower overall weight and a smaller footprint, our design is more economical to construct and install.

Wet ESP Pilot Plant
A mobile gas cleaning pilot system is available for on-site performance demonstrations and data collection.

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