HAMON GROUP
Last revision : 24/02/2017
TECHNOLOGY SOLUTIONS FOR SOx REDUCTION
Presented by: Singaravelu, R. / Moser, C.Venue : Taj Vivanta , DelhiDate : 20th Sep 2018.
HAMON PROFILE
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COOLING SYSTEMS
AIR QUALITY SYSTEM
HEAT RECOVERY GENERATORS
INDUSTRIAL CHIMNEYS
Hamon, company founded in 1904, is an international
engineering and contracting company (EPC) present in
the five continents and listed on the Euronext stock
exchange of Brussels since 1997
Hamon is positioned as one of the world leaders, both for
equipment and aftermarket sales and services in the
following niche markets:
Cooling Systems
Air Quality Systems
Chimneys
Heat Recovery Steam Generators & Waste Heat Boilers
WE ARE THERE EVERYWHERE TO
SERVE YOU…
HAMON INDIA – WE THANK OUR CLIENTS
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Hamon have the technology, experience and reference for 4 types of FGD namely
1. Sea Water FGD2. Wet lime stone FGD 3. Semi dry - Circulating fluidized bed FGD 4. Dry Sorbent Injection – Sodium Bicarbonate or Lime Based.
Based on the plant location, type of fuel , process application , andclient preference for the end product the type of FGD is selected.
Wet Lime Stone
Circulating dry
Scrubber
Sea Water FGD
DRY SORBENT INJECTION
ReACTTM
Regenerated Activated coke Technology for Sox reduction. Dry process.
Bye product –Concentrated SulphuricAcid.
Co Benefit - 40 % NOx capture , and 90% Hg capture
BAUXITE RESIDUE DESULPHURIZATION SYSTEM
Applicable for Alumina Refinery ,
where Red Mud the bye product of Bauxite is available in plenty.
Wet Process , similar to Wet lime stone.
TECHNOLOGIES FOR SOx REDUCTION
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KEY DRIVERS & SALIENT FEATURES FOR CDS FGD
1. Simple and Reliable Process
2. No Pre-Dedusting of boiler ash needed
3. No limitations on SO2/SO3 concentrations;
desulphurization efficiency > 99% possible
4. Complete removal of SO3, therefore no need for
any special material for corrosion protection
5. Multi pollution removal technology (heavy metals,
dioxins and furans, particles PM10)
6. Low space requirements
7. Lower investment costs than others
8. Dry FGD product
9. No reheating of cleaned flue gases necessary
10. No scale up limitations
11. Unlimited part load performance due to clean gas
recirculation
SEMI DRY – CDS FGD
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Conversely, and as opposed to SDAs, an increased
demand for semi-dry CDS technology has been
observed. The development of flue gas cleaning in
a circulating dry scrubber, also well-known as
circulating fluidized bed (CFB) FGD, goes back to
the early 1970s and its first application in the
alumina industry. Research and development
subsequently led to the application of this
technology in flue gas desulphurisation (SO2) for
power plants and flue gas cleaning (HCl, HF and
SO2) for waste incinerators
The absorbent that is used here is normal hydrated lime (Ca(OH)2), which poses no special
requirements on reactivity or specific surface qualities. Alternatively, it is also possible to use
burnt lime (CaO) directly or using it to produce calcium hydroxide on site in a dry lime
hydrator. The metered quantity of the absorbent that fed into the system depends on the
measured concentrations of SO2 in raw and clean gas. In the absorber an optimal reactiontemperature of approx. 15 – 30 °C above the water dew point is set via controlled water
injection.
CDS FGD – PROCESS BASICS
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Back in 2007 Hamon started to develop their
own CFD simulation tools in order to
understand and especially further improve the
CDS technology. With the support of plant
operators at different plants, the results of the
CFD simulation were validated at various load
cases.
As a consequence of the CFD simulations the
weak points of the technology could be
identified and the operation of the CDS plant
was adopted to the new recommendations,
which deleted the problem of high moisture
content in the product and the related
blockages inside the CDS system. In addition
the potential for further improvement by
changing the venturi section design and the
water injection system was identified.
ADVANCED CDS TECHNOLOGY (BLUESORP ®)
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MODIFICATION OF VENTURI NOZZLES MODIFICATION OF WATER INJECTION
In 2012/2013 the design changes for the venturi section and the water injection system were
installed at the CDS plant at Plzeňská teplarenská / Czech Republic. The successful
improvement of the plant and other CDS developments
Based on the successful executed improvements HAMON´s semidry BLUESORP ® technology
is offering a much more reliable operation at all boiler load cases. Following the optimized
process the lime consumption (molar ratio) can be significantly reduced.
IMPLEMENTATION OF BLUESORP ®
SIMULATED SOLID TRACKS AND SOLID VOLUME
FRACTION SOLID FEED AREA DURING OPERATION
SOLID HANDLING WITH AIR SLIDES AND
ROLLER GATE VALVE BETWEEN THROUGH
HOPPER AND ABSORBER
SIMULATION & ACTUAL – CDS FGD
REFERENCE – KARVINA / VEOLIA / CZ
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Parameter Unit Data
Date of award - 02.2013
Size MWth 3 x 62.5
Fuel / S-
content
- / % hard coal / 1.0
Volume flow Nm3/h 460,000
SO2 raw gas mg/Nm3 3,000
SO2 clean gas mg/Nm3 ≤ 190
SO2 removal % ≥ 93.7
Dust clean
gas
mg/Nm3 ≤ 18
Absorbent - lime
FGD product - dry product /
landfill
REFERENCE – ALLIANT / LANSING / USA
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Parameter Unit Data
Date of award - 02.2013
Size MWel 1 x 275
Fuel / S-content - / % PRB / NN
Volume flow Nm3/h 1,121,200
SO2 raw gas mg/Nm3 4,400
SO2 clean gas mg/Nm3 ≤ 90
SO2 removal % ≥ 98
Dust clean gas mg/Nm3 ≤ 15
Absorbent - lime / hydrated lime
FGD product - dry product / landfill
REFERENCE – PUNTA CATALINA / CDEE / DOM
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Parameter Unit Data
Date of award - 06.2014
Size (PC) MWel 2 x 360
Fuel / S-
content
- / % coal / NN
Volume flow Nm3/h 2 x 1,095,000
SO2 raw gas mg/Nm3 up to 5,290
SO2 clean gas mg/Nm3 ≤ 400
SO2 removal % ≥ 92.5
Dust clean gas mg/Nm3 ≤ 30
Absorbent - lime / hydrated
lime
FGD product - dry product /
landfill
REFERENCE – G4 SEAGULL / eTEC / KOR
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Parameter Unit Data
Date of
award
- 07.2014
Size (CFB) MWel 1 x 300
Fuel / S-
content
- / % coal / NN
Volume flow Nm3/h 1 x 996,300
SO2 raw gas mg/Nm3 up to 250
SO2 clean
gas
mg/Nm3 ≤ 50
SO2 removal % ≥ 80
Dust clean
gas
mg/Nm3 ≤ 8
Absorbent - hydrated lime
FGD
product
- dry product /
landfill
REFERENCE – G-II / HANWHA / KOR
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Parameter Unit Data
Date of award - 03.2016
Size (CFB) MWel 1 x 100
Fuel / S-
content
- / % coal / NN
Volume flow Nm3/h 1 x 444,600
SO2 raw gas mg/Nm3 up to 350
SO2 clean gas mg/Nm3 ≤ 70
SO2 removal % ≥ 80
Dust clean gas mg/Nm3 ≤ 5
Absorbent - hydrated lime
FGD product - dry product / landfill
REFERENCE – Sinterbelt / ThyssenKrupp / D
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Parameter Unit Data
Date of award - 03.2018
Size (CFB) MWel N/A
Fuel / S-
content
- / % waste gas
Volume flow Nm3/h 1 x 950,000
SO2 raw gas mg/Nm3 up to 850
SO2 clean gas mg/Nm3 ≤ 300
SO2 removal % ≥ 65
Dust clean gas mg/Nm3 ≤ 5
Absorbent - hydrated lime
FGD product - dry product / landfill