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