Emission Concentrator–for Concentrated Air Streams

An adsorption system called the Anguil Emission Concentrator was created to convert massive volumes of low-concentration process exhaust into a considerably smaller, more highly concentrated air stream.

Image Credit: Anguil Environmental Systems

The significantly reduced flow that contains a higher concentration of volatile organic compounds (VOCs) is sent to a thermal or catalytic oxidizer for VOC destruction. The destruction device’s size can be drastically reduced, lowering capital expenditure.

The smaller abatement equipment decreases auxiliary fuel usage due to the greater VOC concentration managed after.

Product Overview

Benefits of Anguil’s Emission Concentrators

Largest flow capacity in the industry at over 120,000 SCFM (192,600 Nm³/hr) in a single rotor

Reduces the size of the abatement equipment by 90–95% of its original volume, resulting in significant capital and operating cost and energy savings

Image Credit: Anguil Environmental Systems

99%+ Destruction Rate Efficiency (DRE), Regulatory Compliance Guaranteed

Concentration ratios as high as 20:1

Concentrator wheel, desorption air heat and oxidizer integrated as a single system, simplifying installation and control scheme

Regenerative Thermal Oxidizers (RTOs), Thermal Recuperative Oxidizers, and Catalytic Recuperative Oxidizers can be supplied to treat the concentrated stream

Numerous options for source of desorption air heat

High-efficiency filter plenums

Zeolite wheel options to prevent polymerization and minimize risk of fires

Programmable Logic Controllers (PLCs): automates operation from start-up to shut down, reducing the need for operator interaction. The system’s operation can be monitored and changed over a modem through remote telemetry, cutting down on maintenance expenses and downtime. Available are control rooms and numerous enclosure options

Air Flow Range and Efficiency

Air Flow Range

5,000–120,000 SCFM (8,025–192,600 Nm³/hr) (Single Rotor)

Destruction & Removal Efficiency (DRE)

95–99% (Higher DRE can be reached with multiple rotors in series)

Ideal Applications

Large Volume, Low Concentration

Low relative humidity, 90% max RH

Exhaust of 100 °F (38 °C) or less

Features

Anguil Emission Concentrator Features and Design Options

Continuous adsorption of VOCs onto the rotor as opposed to a batch-type adsorption vessel

Concentrator rotor, desorption air heat, and oxidizer integrated as a single system, simplifying installation and controls

Over 120,000 SCFM (192,600 Nm³/hr) capacity with a single rotor system

Robust Programmable Logic Controller (PLC) based controls with digital data recording, remote telemetry, and various configuration options

Completely shop-assembled, pre-wired, and tested before shipment

Zeolite adsorbent rotor minimizes risk of fires common to carbon systems with certain VOC/HAP emissions

Low pressure drops, typically 3”–5” W.C.

Removal efficiencies of 95–99%

Concentration ratios as high as 25:1

Options

Numerous options for desorption air heat

Fully-integrated concentrator–oxidizer systems, including common controls stream

Multiple rotors in series or parallel for even higher DRE or higher airflows

Various zeolite substrate options to prevent polymerization

High-efficiency filter plenums to protect the adsorbent from process particulate exhaust

Image Credit: Anguil Environmental Systems

Operating Cost Reduction Strategies

Primary or secondary heat and Energy Recovery Solutions

Oxidizer Service and Preventive Maintenance Evaluations (PME)

How Do Emission Concentrators Work?

The rotor concentrator, which removes VOC emissions from the air and adsorbs them onto the zeolite, processes the high-volume, low-concentration airstream. Most of this clean air—roughly 90–95% of the entire air volume—is subsequently vented to space.

About 5–10% of the entire air volume, or a tiny fraction of the air stream, is heated to a high temperature and used as desorption air.

Pollutants that have been adsorbed are moved into a desorption section by the concentrator rotor’s continual, extremely slow spinning. The low-volume heated airstream used in the desorption section desorbs or releases the VOCs from the adsorptive medium. An oxidizer processes this low-volume, high-VOC-containing air.

The concentrator with an integrated oxidizer is frequently the most economical technique for processing high-volume, low-concentration streams. The true benefits are obtained in lower operating expenses, even while a system's initial cost is competitive with other technologies.

A concentrator and an oxidizer operate with low or no natural gas usage. It has enough “free energy” at higher concentrations to power the concentrator's desorption process.