Dioxins Emission Continuous sampler DECS

A dedicated solution for the continuous sampling of dioxins and furans

Dioxins and furans are among the most monitored pollutants in combustion, incineration and energy recovery plants. Their control requires rigorous sampling methods capable of preserving the integrity of the sample throughout the measurement campaign.

The DECS has been designed to meet these constraints thanks to a permanent architecture installed directly on the chimney. This configuration makes it possible to carry out long-term sampling campaigns while limiting on-site interventions.

Key benefits

• Continuous monitoring up to 6 weeks
• Fully automated operation
• Automatic control of isokinetism
• MCERTS QAL1 Certification
• Compliance EN 1948 and USEPA Method 23
• Permanent installation on chimney
• Simplified maintenance
• Centralized management of several points of withdrawal

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Compliance with international reference standards

In 1948 for dioxins and furans

The system applies the filter-condenser method associated with a wet gas adsorbent trap in accordance with the requirements of standard EN 1948 used for the determination of PCDD/PCDF in atmospheric emissions.

USEPA Method 23

The DECS also meets the requirements of the US USEPA Method 23 used for measuring persistent organic compounds in flue gases.

MCERTS Certification

The system is MCERTS certified based on requirements for automated isokinetic samplers and validation procedures for environmental monitoring systems.

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High-performance picking technology

Simultaneous collection of the particulate and gaseous phases

The DECS ensures the recovery of pollutants present in the particles as well as in the gas phase without altering the composition of the collected flow.

The sampling unit includes:

• a heated probe,
• a heated filter holder,
• a condensation system,
• an XAD-2 resin adsorbent trap,
• a Pitot tube for speed measurement.

This configuration ensures optimal representativeness of the sample throughout the entire measurement campaign.

Materials suitable for environmental applications

All elements in contact with the sampled gases are made of glass, titanium or materials compatible with the requirements of the reference methods.

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Automatic control of isokinetism

Precision of the sampling

The respect of isokinetic conditions is an essential factor for the quality of results when measuring pollutants associated with particles.

The DECS incorporates a regulation system that allows:

• the automatic adjustment of flows,
• the monitoring of sampling parameters,
• management of operational variances,
• continuous monitoring of system performance.

Monitoring Critical Settings

The control unit ensures:

• temperature monitoring,
• the automatic leak tests,
• the calculation of the collected volumes,
• the recording of alarms,
• the generation of validation data.

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Modular architecture for industrial plants

Sampling unit

Installed directly at the measuring point, the sampling unit remains in place between campaigns and can be put back into service at any time.

Its main advantages:

• no insertion or extraction of probes between the samples,
• quick replacement of the filter and the XAD-2 cartridge,
• design adapted to outdoor installations,
• immediate availability.

Control unit

The control unit centralizes all system functions.

It has in particular:

• a color graphic screen,
• an integrated data logger,
• a Modbus communication,
• an automatic start by process signal,
• an automatically generated withdrawal report.

A single control unit can manage up to four sampling units.

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Adaptation to other regulated pollutants

Beyond dioxins and furans, the DECS can be configured to monitor other regulated substances through the integration of specific accessories.

Possible applications:

• PCB,
• mercury (Hg),
• heavy metals,
• hydrogen chloride (HCl),
• other persistent organic pollutants.

This flexibility makes it possible to optimize environmental campaigns and pool measurement equipment.

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Industrial applications

Waste incineration plants

Biomass power plants

Thermal power stations

Cement plants

Energy recovery facilities

Chemical industries

Sites subject to regulatory oversight of POPs

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Main technical characteristics

Picking Duration

6 hours to 6 weeks

Number of piloted picking units

Up to 4

Distance control unit / sampling unit

Up to 100 meters

Communication

Modbus

Power

220 VAC – 50 Hz

Air instrument

6 bar clean and without oil

Certification

MCERTS QAL1

Applicable standards

IN 1948 – USEPA Method 23

Why choose DECS?

The DECS combines regulatory compliance, advanced automation and industrial robustness to meet the requirements of operators facing persistent organic pollutant monitoring. Its permanent architecture, its MCERTS certification and its ability to carry out long-term campaigns make it a reference solution for the continuous sampling of dioxins and furans.