Continuous

MERCURY Emission Monitoring With

SM-4MERCURY CEMsMERCURY CEMs

Jürgen ReinmannManaging Director

SOx NOx 2019, New Delhi, 12.09.2019

• World leader in continuous measurement solutions of air quality, emissions & monitoring of industrial processes since 1978

• More than 700 employees worldwide

• Sustainable growth (annual average of 10%)

The envea group

2

• Sustainable growth (annual average of 10%)

• 7 European research centers – an annual investment >6M€

• France: Poissy, Biarritz

• UK: Cambridge, Manchester

• Germany: Frankfurt, Schliengen, Munich

• Listed on Euronext Growth® since January 2006

• envea™ a brand of the Group that unites its technologies

.

• More than 20 000 m² of manufacturing area in Europe

• France: gas & particle analyzers; micro-sensors; data acquisition & processing

• UK: laser analyzers; dust & gas flow measuring systems

• Germany: mercury analyzers; continuous samplers (dioxin, mercury & biogenic

The envea group

3

• Germany: mercury analyzers; continuous samplers (dioxin, mercury & biogenic CO2); sensors for solid flow, level, humidity

France: Poissy, Biarritz UK: Cambridge, Manchester Germany: Frankfurt, Schliengen, Munich

ENVEA can supply complete CEMs packages and AQMS with own products !

• More than 20 000 m² of manufacturing area in Europe

• France: gas & particle analyzers; micro-sensors; data acquisition & processing

• UK: laser analyzers; dust & gas flow measuring systems

The envea group

4

• Germany: mercury analyzers; continuous samplers (dioxin, mercury & biogenic CO2); sensors for solid flow, level, humidity

• Subsidiaries in India, China, Italy and USA

• plus distributors in around 70 countries

envea Mercury Instruments has more than 20 years of experiences in mercury analysis

Manufacturer of Hg-CEMs, Hg-Air Quality

Mercury Instruments GmbH is part of the enveaTM group since January 2018

5

Manufacturer of Hg-CEMs, Hg-Air Quality

Monitoring stations, Hg analysers for indoor air quality control, Hg water analyser, natural

gas Hg-analyser

We are located nearby Munich in Germany.

Emissions

Mercury - Facts

EU Hg Emissions in the year 2009

Combustion plants (> 50 MWth): 16,1 tSteel plants: 4,3 t

Cement kilns: 3,3 t

6

Others: 7,6 t______________________________

Total: 31,3 t

MATS – Mercury Air Toxic Standards

Portland Cement Plants Power Plants

Mercury - Regulations - USA

Hg-Monitoring according PS 12 A (Hg-CEMs) or PS 12 B (STMS)Limit value: around 1,5 ug/m3 as monthly average

7

Mercury - Regulations – Europe

Fuel New Plants [µ/m3] Existing Plants[µ/m3]

Coal < 1 - 2 < 1 - 4

BAT reference document for Large Combustion PlantsJuly 2017

In the conclusion of the BREF documents are fixed for large combustion plants (anthracite and lignite, > 300 MWth) as yearly Associated Emission Levels (as BAT-AEL*) the following concentrations:

8

Coal < 1 - 2 < 1 - 4

Lignite < 1 - 4 < 1 - 7

The emissions should be determined by continuous monitoring.Continuous monitoring by Sorbent trap sampling can be used as an alternative!

⇒ For both, the US and the coming EU regulation it is necessary to have monitoring systems which are able to measure accurate in the range 1 – 5 µg/Nm3.

*BAT-AEL = BAT associated emission levels

Mercury - Regulations – Europe

BAT Reference Document for Waste IncinerationDecember 2018 (Final Draft)

In the conclusion of the BREF documents are fixed for waste incinerators the following BAT- Associated Emission Levels (as BAT-AEL*):

10

India:

Guidelines for Continuous

Emission Monitoring Systems

Mercury – Regulations in India

11

Table 7: Parameter specific Emission Standards for industries need to install CEMS

Mercury – Regulations in India

12

Our Solution : Mercury Stack Monitor SM-4

13

Which industries use the SM-4?

Coal fired power plantsCoal fired power plantsCoal fired power plantsCoal fired power plants

14

SM-4: Schematic Flow Diagram� DiluterDiluterDiluterDiluter

� Function: dilution of the flue gas to reduce cross

interferences

� Mercury Converter:Mercury Converter:Mercury Converter:Mercury Converter:

� Function: convert ionic Hg & bound Hg into the

elemental form for final detection – directly after the probe

= ADVANTAGE as from this point no heated line is necessary

to transport the flue gas to the analyzer to transport the flue gas to the analyzer

� Mercury Detector:Mercury Detector:Mercury Detector:Mercury Detector:

� quantitative measurement of Hg by Atomic Absorption (AA)

� Features:Features:Features:Features:

� high efficiency for all forms of Hg

� no loss of efficiency by matrix components

� long life

� no alteration by sample matrix

16

SM-4: Schematic Flow Diagram� Mercury Detector:Mercury Detector:Mercury Detector:Mercury Detector:

� quantitative measurement of Hg by Atomic Absorption (AA)

� Advantages:Advantages:Advantages:Advantages:

� high selectivity & sensitivity

� rugged design for industrial applications

� reliable trouble-free operation

� no carrier gases required (as e.g. by Atomic Fluorescence � no carrier gases required (as e.g. by Atomic Fluorescence

Spectrometry – AFS)

� minimum service demand

17

Maintenance demand for the SM-4

� Routine maintenance:Routine maintenance:Routine maintenance:Routine maintenance:

� Maintenance interval: 6 Month, Time needed 4-6 h

� Lifetime of catalyst: 1 year (depending on sample matrix)

� Analyzer test and maintenance is easy:

� Dust filter, dilution system and catalyst are easy accessible, filter & catalyst can be

changed without big effort and within a short time.

� If needed, the probe can be purged without removal.

� During dismantling of the converter the probe tube can stay at the stack, only the converter

module has to be moved.

� The tubing inside of the sample line can be exchanged.

� There is no very hot part, which needs to cool down before any service work can be started

18

Converter Cover removed

Probe &Converter

Probe Controller

19

Converter with Dilution Unit & Catalyst openedUnit & Catalyst opened

20

Swing Frame for Easy Access of Modules

21

Mercury speciation capability

� What are the Different Forms of Mercury?What are the Different Forms of Mercury?What are the Different Forms of Mercury?What are the Different Forms of Mercury?

� Elemental Mercury Elemental Mercury Elemental Mercury Elemental Mercury (pure Hg): the most volatile & dominant form of Hg in the

atmosphere; released by combustion sources, like coal-fired power plants and

incinerators.incinerators.

� Ionic Mercury Ionic Mercury Ionic Mercury Ionic Mercury (or reactive Hg or oxidized Hg – formed in the atmosphere from elemental

Hg vapor: also directly emitted through combustion of coal and mercury-bearing waste

22

40

50

60

Hg

[u

g/m

³]

SM-4 Speciated Mercury Measurements at Hagerstown Cement Plant

Hg total

Hg elemental

Hg oxidised

SM-4: Mercury speciation capability

The optional available speciation function

can be used e.g. for the optimization of the

FGD

= ADVANTAGE, specific in comparison to

systems without catalyst (e.g. by high

temperature converter with included

detector)

0

10

20

30

Hg

[u

g/m

³]

11. October 2012 - 05. November 2012

23

detector)

Version SM-4 Mobile for flexible use

24

Automatic Quality Control

� The integrated calibration gas generator

Hg vaporizer Controller for mercury calibrator

25

Probe & Converter

Probe Controller

26

27

SM-4 Certificates

� QAL1QAL1QAL1QAL1

28

Measuring in raw gas of communal waste incinerator for dosing

the sorbent material

Waste Furnace

Hg raw gas measurement

Spray absorber

Fabric filter DeNOx catalyst

Hg clean gas measurement

29

� The SMThe SMThe SMThe SM----4 output signal is used to control of dosing the Hg4 output signal is used to control of dosing the Hg4 output signal is used to control of dosing the Hg4 output signal is used to control of dosing the Hg----sorbentsorbentsorbentsorbentRaw gas of waste incineratort

Increase of Hg in raw gas & in clean gas after a short time. When reaching a stored threshold the automated

dosing of a sorbent increases to 100% (=20 kg/h activated carbon). With this action the limit value for clean gas

will not be passed.

30

SM-4 Certificates: RATA Test at US plant

31

Tableau comparatif des essaisEssai 1 2 3 4 5 6

Sur Sec

28.11.2017 28.11.2017 28.11.2017 29.11.2017 29.11.2017 29.11.20179h52 à 11h54 12h15 à 14h15 14h25 à 16h25 9h05 à 11h05 11h18 à 13h20 13h30 à 15h30

amont sec aval sec amont sec aval sec amont sec aval sec amont sec aval sec amont sec aval sec amont sec aval secµg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3

Mercury instruments

67,3 2,8 86,5 2,1 31,6 2,9 50,9 0,7 453,6 201,0 139,2 60,1

AMESA M 2,7

LABO MPT 29,0 16,9 92,0 4,6 186,0 0,7 34,9 2,9 3736,0 243,1 1133,0 156,1LABO SGS 9,3 7,0 14,9 2,8 28,8 0,8 5,3 1,6 2543,0 221,0 803,0 159,0

SM-4 tests in Rennes, raw & clean gas

LABO SGS 9,3 7,0 14,9 2,8 28,8 0,8 5,3 1,6 2543,0 221,0 803,0 159,0H2O Moyen % 17,9 16,2 18,3 16,6 17,3 15,5 14,0 12,6 15,1 13,5 16,3 14,8

Essai 1 2 3 4 5 6

11% d'O2

28.11.2017 28.11.2017 28.11.2017 29.11.2017 29.11.2017 29.11.20179h52 à 11h54 12h15 à 14h15 14h25 à 16h25 9h05 à 11h05 11h18 à 13h20 13h30 à 15h30

amont sec aval sec amont sec aval sec amont sec aval sec amont sec aval sec amont sec aval sec amont sec aval secµg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3 µg/Nm3

Mercury instruments

54,3 3,0 68,6 2,2 25,4 3,0 52,3 1,0 404,7 235,7 111,4 62,6

AMESA M 2,8

LABO MPT 23,4 17,9 72,9 4,7 149,5 0,8 35,9 3,9 3332,7 284,9 906,4 162,6LABO SGS 7,5 7,4 11,8 2,9 23,2 0,8 5,4 2,2 2268,5 259,1 642,4 165,6O2 Moyen % 8,6 11,5 8,4 11,4 8,6 11,6 11,3 13,6 9,8 12,5 8,5 11,4

32

Mercury Emission Measurement Methods

In several documents as e.g. US MATS, European BREF there are also mentioned Sorbent Trap Monitoring Systems (STMS) as alternative for Mercury Emission Monitoring

In the ENVEA group we have also such a system to offer as AMESA M.

33

By more and more countries, which sign and ratify the Minamata Convention, the necessary actions to reduce and therefore to monitor mercury emissions increase

According to the Guidelines for Continuous Emission Monitoring Systems published in

August 2019 by the Central Pollution Control Board of India, the continuous emission monitoring of Hg emissions has to be implemented in Power Plants.

The Emission Limit value is defined to 0,03 mg/Nm3

The SM-4 Hg-CEM system is suitable for this application

34

The SM-4 Hg-CEM system is suitable for this application

Due to the dilution directly by the sampling probe it is quite robust against aggresive flue

gas conditions

With the MATS rules in the USA and the future BREF documents in the EU also Long

Term Sampling can be used for an accurate determination of mercury emissions of mainly

power plants and cement kilns and also waste incinerators

We as envea have both technologies in our product range

We have also the experts to support you in your emission monitoring requirements

Thanks a lot for your attention !

Jürgen ReinmannJürgen Reinmann

Managing Director – envea Mercury Instruments GmbH -Germany