1. MERCEM300Z Intelligent mercury monitoring
Florian Greiter, Produkt Management

2. MERCEM300Z – Table of contents
System components and measuring principle
Test results and certification
Summary
Bei Beweggründe auf alle Fälle die Applikationen mit erwähnen.
: Florian Greiter, Product Management

3. MERCEM300Z – Overall system
Gas sampling system
: Our solution – high temperature
Bundle of pipes
Control of main valve
Electrical connections
Heated sample gas line
Exhaust air
: Florian Greiter, Product Management

4. MERCEM300Z – Sample gas supply
Ejector
Sample gas line
: Florian Greiter, Product Management

5. MERCEM300Z – Gas flow diagram
Ejector
Exhaust gas
Ejector air
Cell
Nozzle
Pressure control for flow control
Cell
1000°C
Optics
Sample probe
CALSIC300
Nozzle
Filter
Sample gas line
Evaporator
: Florian Greiter, Product Management

6. MERCEM300Z – Sample gas supply
MERCEM300Z Ejector principle
Advantages:
No moving parts
Wear-free
Flow control via pressure sensors
High gas flow results in short response time
Benefits
 Very low operating expenses
Measuring certainty due to control
Longest certified measuring gas line with 35m
: Florian Greiter, Product Management

7. MERCEM300Z - Design High temperature cell
: Florian Greiter, Product Management

8. MERCEM300Z – Hg - Conversion
All optical measuring principles are based on the measurement of elemental mercury (Hg0) !
 Conversion of mercury compounds (Hg+) to elemental mercury (Hg0)
Wet chemistry: HgCl2 + SnCl2 -> Hg0 + SnCl4
Thermo converter: approx °C
High temperature: from approx. 800°C
SICK: ~ 1000°C
: Florian Greiter, Product Management

9. MERCEM300Z – Hg - Conversion
High temperature conversion
Heated quartz cell
(1000 °C)
Double walled
Sample gas outlet
High temperature
1000 °C
Sample gas inlet
= HgCl2
= Hg
HgCl2 + High temperature  Hg0 + Cl2
: Florian Greiter, Product Management

10. MERCEM300Z – Design
Optical unit
: Florian Greiter, Product Management

11. MERCEM300Z – Measuring principleHg
How to determine the concentration? I0 I
Light source
Lichtquelle
Measuring path
Detector
Reference signal
Measuring signal
Absorption spectrum
elemental Hg
1000°C
Conc ~ I0 / I
Atomic absorption spectroscopy
Absorption I0 I
Wave length / nm
: Florian Greiter, Product Management

12. MERCEM300Z – Measuring principle Zeeman Atomabsorptionsspektroskopie
Absorption spectrum Hg0
Detector
Polarizer
Chronological differentiation of the signals: 2µs
Photo elastic
modulator (50kHz) s- s+
Light waves of different polarization B
Light source
Hg – light source
: Florian Greiter, Product Management

13. MERCEM300Z – Measuring principle
Advantages of Zeeman - AAS
Continuous measuring method
No moving parts
 No mechanical wear
 Long-term stability
(Maintenance cycle of light source: ≥ 1 year)
Automatic drift correction for
Light source modifications
Contamination of optical surfaces
Identical influence of cross sensitivity components on measuring and reference signal
 Best possible cross sensitivity correction s- s+ B
Hg - Lichtquelle
: Florian Greiter, Product Management

14. MERCEM300Z – Measuring principle
Influence of cross sensitivities; e.g. SO2
measuring wave lengths
: Florian Greiter, Product Management

15. MERCEM300Z – Measuring principle
Influence of cross sensitivities; e.g. SO2
measuring wave lengths
: Florian Greiter, Product Management

16. MERCEM300Z – Measuring principle
Influence of cross sensitivities; e.g. SO2
Wave length of measuring and reference signal are almost identical
 The interference caused by cross sensitivity components stays constant within the wave length interval!
 Thus the cross sensitivity is immediately compensated.
measuring wave lengths
: Florian Greiter, Product Management

17. MERCEM300Z – Measuring principle
Influence of cross sensitivities (results from type approval)
Component Concentration Cross sensitivities on Hg
SO mg/m³ µg/m³
H2O 30 Vol% µg/m³
HCl 200 mg/m³ no CS
NO 300 mg/m³ no CS
NO2 30 mg/m³ µg/m³
O2 21 Vol-% µg/m³
All other tested cross sensitivities are below ± 0.05 µg/m³ = <0.5% certification range
: Florian Greiter, Product Management

18. MERCEM300Z – Measuring principle
MERCEM300Z measuring principle: Zeemann AAS
Advantages:
Continuous measurement
No moving parts
Automatic drift correction
Best possible cross sensitivity correction
Benefits
Easy design – Easy access, no black box
 Very low operating expenses
: Florian Greiter, Product Management

19. MERCEM300Z – Patented extractive direct measurement
Measurement within heated cell of about °C
Advantages
No Hg – recombination
No memory effects
Continuous monitoring of total Hg
Benefits
Reliable monitoring of total Hg independent
from plant conditions
Measuring certainty
: Florian Greiter, Product Management

20. MERCEM300Z – Internal adjustment
Optical unit
: Florian Greiter, Product Management

21. MERCEM300Z – Internal adjustment
MERCEM300Z Integrated Adjustment Cell
Generation of a defined long-term stable Hg - signal
with adjustment cell (patent pending)
Advantages
No test gas required
Automatic drift control
Full adjustment of optical bench
Benefits
Measuring certainty
Saves operational expenses due to drift control without test gas
: Florian Greiter, Product Management

22. MERCEM300Z – Test gas generator
Vaporizer
Sample gas line
CALSIC300
: Florian Greiter, Product Management

23. MERCEM300Z – Test gas generator
CALSIC300 (option)
Vaporization of liquid HgCl2-solution of known concentration
Realization as automated span gas function
Three predefined span concentrations possible
Automatic injection before sampling filter unit
: Florian Greiter, Product Management

24. MERCEM300Z – CALSIC300 MERCEM300Z – CALSIC300 Advantages Benefits
Adjustment of overall system
Fully automated QAL3 function included
Check of conversion rate included
Benefits
Measuring certainty due to check of overall system
Saves operational costs:
No additional costs for test equipment, e.g. test gas, Hovacal ….
No additional costs for technician
: Florian Greiter, Product Management

25. MERCEM300Z – Adjustment during field test
Adjustment cell
High
Middle
Low
: Florian Greiter, Product Management

26. MERCEM300Z – Cabinet MERCEM300Z System housing Advantages Benefits
Standardized setup
Easy to maintain
Full air conditioning (-20 to +50°C)
Protection grade IP55
Dimensions: H W D
1800mm x mm x 745mm
Weight: approx. 250 kg
Benefits
Convenient and fast access for easy service
Stable measuring results in harsh and/or difficult ambient conditions
: Florian Greiter, Product Management

27. MERCEM300Z - Design High temperature cell Ejector Optical unit
Electronics
CALSIC300
: Florian Greiter, Product Management

28. MERCEM300Z – Table of contents
System components and measuring principle
Test results and certification
Summary
Bei Beweggründe auf alle Fälle die Applikationen mit erwähnen.
: Florian Greiter, Product Management

29. MERCEM300Z – Certification
: Florian Greiter, Product Management

30. MERCEM300Z – Certification
: Florian Greiter, Product Management

31. MERCEM300Z – Type approval
Type approval according to EN15267
Approved measuring ranges: 0-10/45/100/1000 µg/m³
Lowest approved measuring range for mercury analyzer: 0 – 10 µg/m³
Highest approved measuring range for mercury analyzer: 0 – 1000 µg/m³
Unique maintenance interval: 6 months!
Unique type approved system which is certified to monitor mercury at all relevant
plant types (waste incineration, power plants and cement plants)
Successful implementation of system at 3 plants where no other mercury monitoring system could be calibrated
Cement plant (Germany)
Lime plant (Rheinkalk) Germany
Sinter metal plant
: Florian Greiter, Product Management

32. MERCEM300Z – Type approval
: Florian Greiter, Product Management

33. Raw gas monitoring: waste incineration plant
Raw gas monitoring at a waste incineration plant
Hg- Concentrations between 500 µg – 4000 µg
No change in system setup
Uninterrupted operation since 4 months
Adjustment with internal CALSIC300
: Florian Greiter, Product Management

34. MERCEM300Z – Table of contents
System components and measuring principle
Test results and certification
Summary
Bei Beweggründe auf alle Fälle die Applikationen mit erwähnen.
: Florian Greiter, Product Management

35. MERCEM300Z – Summary MERCEM300Z Features Benefits
Precise measurement of “total mercury”
directly in a thermal converter (patented)
Measuring operation without using consumables
Very low maintenance gas sampling using
an ejector pump – no moving parts
Integrated adjustment cell for automatic drift
correction
Benefits
 Reliable results of the actual measuring
values of elemental Hg and Hg-
compounds in gases
 Very low operating expenses
 Minimum maintenance expenditure
 Long-term stability without the need of a
technician due to self – adjusting
measuring system
: Florian Greiter, Product Management

36. MERCEM300Z – Summary MERCEM300Z Features Benefits
Automatic adjustment of the entire
measuring system with a built-in test gas
generator (optional)
Modular design with the entire system
Rugged housing for use in harsh industrial
environments
Benefits
 Measuring certainty using the fully
automated adjustment with test gas
 Convenient and fast access for easy
service and user-friendly remote diagnosis
 Stable measuring results in harsh and/or
difficult ambient conditions
: Florian Greiter, Product Management

37. MERCEM300Z MERCEM300Z – Questions ? Innovative mercury monitoring
: Florian Greiter, Product Management