Dust Monitoring for Incinerators

ZETA 5000 - solution to WID dust monitoring regulatory concerns

Installation of a certified or otherwise approved continuous emissions monitor is mandatory in most advanced jurisdictions. However, careful comparison of the performance features of the monitor with the specific requirements of the installation remains essential, to ensure a dust monitoring system which will provide representative measurements, and remain accurate over time.

To secure the required regulatory approvals within the European Union, the incinerator operator must demonstrate that:

• Their particulate monitoring techniques and automated measuring systems (AMS) conform to the CEN 14181 standard
• Their continuous emissions monitors have been calibrated representatively and to CEN standards

The major issues for incinerator operators in selecting a dust monitoring system are:

• Avoidance of any possibility of biased sampling v
• Tolerance of high temperatures
• Changes over time to the level and composition of the emissions (which arise from the fact that solid waste is a heterogeneous fuel)
• The aggressive environment of acidic gases
• Early warning of bag house deterioration, given a daily average emissions limit value (ELV) of 10mg/m3 (from 1 January 2008)

 The ZETA 5000 provides a dust monitoring system which addresses all of these concerns:

Biased sampling?

The proportion of a stack´s emissions measured by the Zeta 5000 vastly exceeds that achievable with any of the existing technologies, and so avoids the measurement uncertainties associated with uneven and/or changing particle distribution across the stack

• Zeta uses a fan of light rather than a narrow beam or small probe to detect the particles. Its detection area is therefore many times larger than can be achieved using tribo-electric probes or narrow beams of light
• Zeta´s fan focuses on the centre of the stack, where the particulate matter is concentrated, and the gas flow is greatest\

Zeta therefore greatly diminishes the risk of biased sampling, and provides emissions monitoring with unsurpassed certainty and accuracy.

High Temperatures?

The Zeta 5000 has been designed to operate in gas streams with temperatures of up to 1,200ºC.

Changes in Flow Rate or Composition of the Gas Stream?

• The Zeta 5000 utilises light scatter technology, which is unaffected by (changes in) humidity, velocity, or particle conductivity
• Its advanced electronics design provides accuracy and sensitivity which, coupled with its large sampling area, ensures rapid identification of changes in particulate emissions

Aggressive Environment?

• The Zeta 5000 is a non-intrusive continuous emissions monitor and thus unaffected by the physical (abrasiveness, stickiness) and chemical (acidity) characteristics of the gas stream
• The purged air supply at 10 litres per minute avoids optical fouling

Bag house Monitoring?

With FilterMonitor, Etr-Unidata´s bag house management software, a single Zeta 5000 can monitor the performance of each separate row within a bag house to give the earliest possible warning of any deterioration in filter performance

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