AHLS — Preliminary Visual System Concept

Consultation

System 01.1 · Air pollution control

Wet ESP Systems

Wet Electrostatic Precipitator (Wet ESP or WESP) Systems are widely accepted as the leading technology for control of difficult-to-collect fine particulate emissions.

  • Sub-micron particulate
  • Fumes
  • Condensable organic aerosols
  • Acid mist

AHLS designs the inlet for upflow or downflow gas handling to suit the waste stream.

Conceptual Wet ESP schematic: gas passes through collecting tubes with disk-in-tube electrodes energized by a high-frequency power supply; collected liquid drains to water recycle and treatment. Not to scale. HF INLET OUTLET INLET OUTLET
  1. Gas inlet Process off-gas with fine particulate, fumes, aerosols or acid mist.
  2. Wash water Integrated water recycle, treatment and disposal (scope option).
  3. Collecting tubes Stainless steel on all internal surfaces; higher alloys available.
  4. Disk-in-tube electrodes Proprietary AHLS electrode configuration.
  5. High-frequency power supply Maximizes total electric field and available power.
  6. Clean gas outlet Up to 99% collection efficiency; outlet loading < 10 mg/Nm³ (published).
  7. Collected liquid Drained to the water recycle and treatment system.
Fig. S2.1Conceptual Wet ESP schematic — not to scale. Illustrative only; geometry and components to be verified by AHLS engineering.

Engineered to meet the challenge.

The collection of fine particulate emissions is often one of the most difficult environmental control problems faced by industry. Sub-micron particles (e.g. PM2.5) present a significant threat to human health and are one of the leading causes of smog.

AHL’s Wet ESP design features a proprietary disk-in-tube electrode configuration and a state-of-the-art high frequency power supply that maximizes the total electric field and available power to ensure the highest possible particulate collection efficiency.

AHLS designs the inlet of the Wet ESP for upflow or downflow gas handling to meet the requirements of the waste stream. Heavy-duty modular construction is intended for easy installation and long service life.

Text adapted from the Wet ESP page on ahlundberg.com.

A comprehensive approach.

Design features

  • Proprietary disk-in-tube electrode configuration
  • High frequency power supply
  • Inlet designed for upflow or downflow gas handling
  • Heavy-duty modular construction for easy installation and long service life
  • Stainless steel on all internal surfaces
  • Higher corrosion-resistant materials available as the process requires

Scope options

  • Full turnkey installation including tie-ins to the process
  • Integrated water recycle, treatment and disposal systems
  • Upstream cyclone
  • Upstream and downstream chemical scrubbing
  • Integration with RTO or RCO
Wet ESP installation supplied by AHLS
Fig. S3.1Wet ESP installation. Image: ahlundberg.com

Integration Wet ESPs may be integrated into the top of absorption scrubbers for enhanced removal of sub-micron aerosols and particulate matter. Gas scrubber systems

Where Wet ESP is applied.

As listed on AHLS industry pages.

Related systems on ahlundberg.com