Engineered solutions to boost the performance of your waste-to-energy plant

PRESENTATION AT 16. POTSDAMER FACHTAGUNG AT 21.2.2019 (ORIGINAL WAS PRESENTED IN GERMAN)

DUBLIX.COM

Oliver Gohlke

og@dublix.com

Dublix Team

Asger DanielsenSales Director

Dr. Oliver GohlkeTechnology Director

Mario LodiProjects Director

Kristian LlewellynSales Manager

Jesper HingeProcess Automation

Poul NielsenSenior Software

Engineer

Hung Quoc NguyenDraftsman

Jens-JørgenØstergard

FuzEvent Expert

Michael ParvangSenior AdvisorWTE Expert

Dr. Sascha KruegerSenior Advisor

(IBK)

Dr. Jörg KrügerSenior Advisor

(VWT)

Bertram HolstMechanical and

grate expert

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④ Sulfatation

Generator

②

② Combustion

grate parts and

upgrades

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Engineered solutions to boost the performance of your waste-to-energy plant

① High level

combustion control

Double-jet

secondary air ③

⑤Water-jet cleaning

- 3 -

1. High level combustion control –FuzEvent

1. High level combustion control(FuzEvent)

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① High-level

combustion control

Example of WTE plant:Classical control (Line B)

Time (24 hours)

Ste

am

flo

w (

t/h)

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FuzEvent control (Line A)

Time (24 hours)

Ste

am

flo

w (

t/h)

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FuzEvent – online dashboard

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2. Combustion system upgrades

2. Combustion grate parts and upgrades

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②

② Combustion

grate parts and

upgrades

MVA Rostsysteme - Engineering, Service / Teile

DUB3 System in Arezzo, Italien

(kompatibel mit klassischen Volund-Rosten)DUBLIX.COM

www.cronite

-group.com

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DUB 3 grate system (for classical Volund type)

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www.cronite

-group.com

10

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Composite grate bars for forwardpushing grates

Cast part with NiCrSi

Support structure with steel

Composite grate bar

www.cronite

-group.com

2. Combustion system upgrades

3. Avoiding CO and slagging withdouble jet secondary air(BoosterSteam)

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Steam 5 bar

③ Double jet secondary air

BoosterSteam injection (Schwandorf front wall)

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BoosterSteam – Injection device

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CO reduction with supersonic concentric double jet overfire air nozzles (BoosterSteam)

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Origin of slagging at secondary air level

Source: Sascha Krueger

Avoidingslagging at secondaryair level

Source: Sascha Krueger

4. Avoiding fouling and corrosion -SulfGen

4. Preventing fouling and corrosion(Krueger-Sulfatation)

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Avoiding fouling and corrosion

▪ Temperature lines for phase transitionsolid-liquid for pure and mixed salts of chlorides and sulphates in systemsconatining Sodium and Zinc. [1].

▪ Minimum melting point2 ZnNaCl2 x NaCl = 262 °C

▪ Minmal melting pointNa2SO4 x 2 ZnSO4 = 472 °C

▪ 2 NaCl + SO3 + H2O --> Na2SO4 + 2 HCl

[1] Evseeva, N. N., Bergman, A. G. 1952; further source: Dr. Sascha Kruger

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Equipment Weener test plant

Distribution with secondary air

Industrial scale prototype

Distribution kit

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Weener test plant

▪ 3-pass boiler with water cooled grate (Baumgarte)

▪ Commissioning April 2008

▪ 70 MW thermal with 85 t/h steam at 27 bar/320 °C

▪ Since 2013: Performance increase to 77 MWwith 93,5 t/h steam

▪ Since 2017: Performance increase to 84 MWwith 102 t/h steam

▪ Round about 50 % of steam for paper factory

▪ Excess steam to 2 condensation turbines of 9,4 MWel

▪ Throughput of refuse derived fuel2009-2014 162.500 t/a2015: 188.585 t/a

Source: Thomas Tappe, WVT Breiding Rostock 2016

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Dosing and distribution skid

Pymouth test plant

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Injection through overfire air

Pymouth test plant

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3. Boiler cleaning with water jet - DD Jet

5. Water jet boiler cleaning (DD Jet)

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⑤Water jet cleaning

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Turning self propelled nozzle head

Full installation

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Inegration into the boilers

Installation

height<2 m

Efficient

cleaning up

to 6 m

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Recent DD-Jet references

▪ Veolia Singapore, fully automated system

▪ HVC Dordrecht, NL, fully automated system

▪ Klingele Weener, D, fully automated system for 1st, 2nd, 3rd pass

▪ GEQ Shinseung, S. Korea, fully automated system

▪ Charleroi, Belgium, fully automated system

▪ Hallingdal, Norway, semi automated system

▪ Veolia STVL Limoges, France, 2 semi automated systems

▪ IVM Eeklo, Belgium, 2 DD-Jet Nozzle heads

▪ IVAGO, Belgium, 1 DD-Jet Nozzle head

▪ Essent Wijster, Holland, 4 DD-Jet Nozzle heads

▪ IBW Virginal, Belgium, full system (Fabricom project)

▪ Veolia Italy, Gioro Tauro, Fluid bed, semi automated system

▪ Vaasa, Finland, HZI, semi automated system Vantaa

▪ Finland, HZI, 2 fully automated systems

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DD-Jet case Como

Results after the

installation of the

DD-Jet system on

the COMO WtE

plant October 2016

Temperature

development prior to

the installation of the

DD-Jet system on the

COMO WtE plant

Regular

shutdowns

needed

No more

shutdowns

Time scale =

3 monthsDUBLIX.COM

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Comparison to day before (conventional nozzle head)Boiler 1

11.12.18

&

12.12.18

DD-Jet Düse

12.12.

Konventionelles

System 12.12.Konventionelles

System 11.12.

0 1 2 3 4 5 6 7

Water consumption (in m3/h)

Water pressure (in bar)

Cleaning efficiency up to (in m)

Settings

Standard nozzle

Rotating self propelled nozzle

Effect of self propelled turning DD-Jet nozzle

0 10 20 30 40 50 60

Δ T upstream convective SH(°C; flue gas temperature

before/after cleaning cycle)

Potential of reduction(SH corrosion/fouling)

Effect

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Engineered solutions to boost the performance of your Waste-to-Energy plant!

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References

See:

www.dublix.

com/library/

references

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O&Mteam

DUBLIX-Technology

R&D

Success

But also about good

cooperation!

It is about developing smart

engineered solutions …

Combustion control

Combustion grate

improvements

Steam injection

Preventing

fouling and

corrosion

Boiler

cleaning

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