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New On Stack Emission Monitoring Technology. m /ixa. Content. Emission Monitoring – why? Monitoring Technologies Experience Gained Emission Monitoring - System Requirements Technology respons Future Of Emission Monitoring.

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New On Stack

Emission Monitoring Technology


Emission Monitoring – why?

Monitoring Technologies

Experience Gained

Emission Monitoring - System Requirements

Technology respons

Future Of Emission Monitoring

emission monitoring why
Emission Monitoring – why?

Main drivers:

Energy optimisation

Environmental soundness

Meeting regulations

    • Shipping is the primary mode of transportation
    • NOx, SOx and PM from shipping is a significant portion of global emission
  • Human health & crops are seriously affected by NOx, SOx and PM
  • To reduce, control and manage NOx, SOx and PM emission various technologies will be implemented in the coming years.
  • Thus emission monitoring will be part of the solution


NO - NO2 - PM

CO - H2O – SO2


Monitoring Technologies – Schematic

Visualization& Reporting

Gas sampling at stack

Mulitplexing(several lines)

Initial gas conditioning

Final gas conditioning

Transport (sampling line)

Gas analysis


Monitoring Technologies – Sampling

Extractive CEM Systems

  • Cold extractive
  • Hot extractive
  • Dilution systems

In-situ CEM systems

  • Cross stack light based systems
  • Probe and point based systems

Gas sampling at stack

Initial gas conditioning

Transport (sampling line)

monitoring technologies analyzing methods
Monitoring Technologies – Analyzing Methods
  • Chemiluminescece (CLD)
  • UV fluorescence
  • Non Dispersive Infra Red (NDIR)
  • Electrochemical cells
  • Lased Detection (TLD & QCL)
  • Zirconium oxide sensors (ZrO2)

Mulitplexing(several lines)

Final gas conditioning

Gas analysis

experience gained cld
Experience gained CLD

Proven technology (reference method)

Require sample & conditioning systems

Slow response time

Can only measure NO not NOx

High consumable & maintenance requirements

A/C unit will normally be required

Total high cost of ownership

experience gained zro2
Experience gained ZrO2

Well-proven – cost effective technology developed for the automotive industry.

Real-time measurement with no delays from sample lines, multiplexing, coolers and converters

Easy installation, operation and maintenance

Total low cost of ownership

Measure only NOx and O2, no other gases

Sensor degradation by SO2

emission monitoring system requirements
Emission Monitoring – System Requirements
  • Robust online measurement
  • Simple - No conditioning or gas transport
  • Direct - Accurate Hot gas Measurement
  • Adaptable to increasing regulation
  • Low maintenance
  • Low cost of ownership
  • Certified to MARPOL annex Vl
patented ir principle
Patented IR Principle
  • Correlated suspect/reference
  • Superior ambient & source artifact immunity – pressure, temperature…
  • Robust measurement

Patented & Patents Pending

thermally de coupling the optical sensor
Thermally de-coupling the optical sensor
  • Patented concept of thermally de-coupling optical path sight-tubes
  • Effective thermal de-coupling enables hi-temp measurement
  • Wide-band IR transmission
  • Gas filled for undisturbed transmission
  • De-focused optical system mitigating spot contamination on optics

Patented & Patents Pending

patented gas flow chamber
Patented Gas Flow Chamber
  • Vortex-flow chamber for undisturbed optical gas measurement
  • Structured gas flow for avoidance of residuals in optical path
  • Intrinsic cleaning effect on sight-glasses
  • Particles held away from optical path center-line

Patented & Patents Pending

patented optical path protection
Patented optical path protection
  • IR transmissive nano-coated sight-glasses
  • Contaminant repellent
  • Super hydrophobic
  • Heat & Corrosion resistant

Patented & Patents Pending

combustion emission sensor system
Combustion Emission Sensor System
  • Modular sensor system
  • Direct and continuous measurement
  • Hot/Wet combustion gasses
  • Configurable for exact gas measurement needs
  • All core technologies patented

Patented & Patents Pending

future of emissions monitoring
Future of emissions monitoring
  • The world depends on shipping, but emissions must be reduced
  • Global and local regulation will reduce emission
  • Multiple emissions mitigation technologies will be implemented
  • The operation of emissions mitigation systems should be optimized
  • The effect should be documented
  • Online emissions monitoring is part of efficient shipping