prenflo psg & pdq - tu-freiberg.de · latest developments based on decades of gasification...
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PRENFLO PSG and PDQ Latest Developments based on
Decades of Gasification Experience
Fourth International Conference on Clean Coal Technologies CCT 2009 3rd International Freiberg Conference on IGCC & XtL Technologies
Dresden, Germany 18-21 May 2009
Dr. Stefan Hamel, Uhde GmbH, Germany
http://www.cct2009.org/
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Does Gasification make any sense @ ~50 US$/bbl?
Yes, because
• Gasification feedstock is unrelated to short-term oil price volatility
• Gasification is a poly-generation technology
• Gasification enables power generation with CCS
• Gasification is clean, efficient, and well-proven
• and...
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Energy Reserves (billion tons, oil equivalent)
• ...Gasification applies sustainable resources
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Uhde‘s Gasification Highlights – SUMMARY:
Development, Design and Construction of
first Koppers-Totzek Coal Gasification Plant
first Texaco Coal Gasification Plant
first HTW Coal Gasification Plant
first Shell-Koppers Coal Gasification Plant
first PRENFLO Coal Gasification Plant
Over 100 Gasifiers designed, built and put into successful operation by Uhde
Invention of Entrained-Flow Gasification:
Koppers-Totzek: dry-fed, membrane wall, multiple burners (1941)
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Uhde‘s proprietary Koppers-Totzek Gasification Process First Entrained-Flow Gasification Technology
Koppers-Totzek gasification plant Modderfontein, South Africa
1,000 t/d of ammonia
Koppers-Totzek gasification plant Ramagundam, India 900 t/d of ammonia
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HTW coal gasification plant Berrenrath, Germany
1,000 t/d of ammonia
GE (Texaco) coal gasification plant Oberhausen, Germany hydrogen, oxochemicals
First GE (Texaco) Coal Gasification Plant with radiant cooler First HTW Coal Gasification Plant in commercial-scale
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First PRENFLO Demonstration Plant – 1980‘s
PRENFLO plant in Fürstenhausen / Germany
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8World‘s largest single-train IGCC: PRENFLO Gasification Elcogas, Puertollano, Spain
Feedstock: petcoke / coal with addition of biomass
PRENFLO Gasifier
Gas Treatment
Coal PreparationASU
Combined Cycle
New CO2 capture Pilot Plant under implementation
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PRENFLO gasifier and waste heat boiler (PSG)
• dry coal/petcoke powder feed• 4 horizontal co-annular burners• membrane wall• waste heat boiler (PSG)
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PRENFLO Membrane Wall protected by the slag layer
BFW, 40-70 bar
Water Tube(membrane wall)
Gasification Reactor
> 1500 °C
molten slag flows downwards
solidified slagmolten slag
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PRENFLO Gasifier Membrane Wall
View to gasifier membrane wall after operation (PRENFLO burner)
View to gasifier membrane wall before 1st operation (PRENFLO burner)
Perfect slag layer protecting membrane wall
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12PRENFLO Gasifier - erection of internals (Puertollano)
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Lifting of PRENFLO Gasifier / HP-Boiler (Puertollano)
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14Puertollano IGCC: Operating Experience
General
Gasification is flexible with broad range of solid fuelshigh-ash hard coal and petroleum coke
addition of biomass successully demonstrated
Flexible load change behaviourNearly constant gas heating value irrespective of fuelNo formation of higher hydrocarbons, methane < 0.1 vol. %Non-leachable slag productionFly ash sold to cement industryElcogas statistics show that the vast majority of down-times was caused by non-gasifier related issues
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PRENFLOwith Direct Quench
PDQ
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16The PRENFLO process with Direct Quench (PDQ)
TargetsIntegrate Lessons Learned from >10 years operation of Puertollano IGCC
Optimize PRENFLO technology for chemical and hydrogen applications
Identify areas of significant Capital Cost Reduction
Water Quench instead of Gas Quench and Waste Heat Boiler
Keep commercially proven elements of PRENFLO technology
Design of a robust system
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17The PRENFLO process with Direct Quench (PDQ)
Process characteristicsPressurized entrained-flow gasification
Dry coal dust feeding
Multiple co-annular burners (horizontal, tangential arrangement)
Membrane Wall, no refractory
Operation pressure flexible to requirementsapprox. 25 - 40 bar
Raw gas temperature outlet of quenchapprox. 200 - 250 °C
Slag lock-hopper system
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Slag
Feed,oxygen
Waste heat boilers
Raw gas(incl. fly ash)
Raw gas
Slag
Feed,oxygen
PRENFLO gasifier with Direct Quench (PDQ)
PRENFLO gasifier with Steam Generation (PSG)
Direct Quench
Feed,oxygen
Raw gas
Samegasifier design
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PRENFLO with Direct Quench
1000 MWth , 40 bar
PRENFLOTMwith
Direct Quench
PDQ
© Uhde 2008
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Raw Gas
S/G=1.3
PSG Gasifier Gas Quench
Waste H. Boiler
FAFilter
Scrubber
CO-Shift
Saturator H2 Gas
Steam
Raw gas
S/G=1.3
PDQ Gasifier Direct Quench
Scrubber CO-Shift
H2 Gas
Steam
PSG:
PDQ:
PRENFLO PSG vs. PRENFLO PDQ Impact on Cost: Process Configuration (e.g. H2 plant)
substituted by Direct Quench
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PRENFLO PSG vs. PRENFLO PDQ Impact on Cost: Plant Layout
PRENFLO (PDQ)
PRENFLO (PSG)
EPC cost savings: ~30 %
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-4,0%
-3,5%
-3,0%
-2,5%
-2,0%
-1,5%
-1,0%
-0,5%
0,0%
0% 20% 40% 60% 80% 100%
shifted gas fraction
Δ o
f ele
ctric
effi
cien
cy [%
-poi
nts]
• CTC• CTL • IGCC-CCS
PRENFLO PSG vs. PRENFLO PDQ Impact on Efficiency
IGCC H2
In the targeted applications, PDQ is -1.0 to -1.8 %-points lower than PSGthis low impact does notjustify the higher capital costof a waste heat boiler design
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February 2009:New Co-operation Agreement Elcogas ~ Uhde
• Extensive integration of Operating Experience with technology and engineering know-how
• Joint implementation of R&D projects• Platform for plant reliability, operator training,
operating and maintenance services• Regular exchange and presence on site
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24One of the latest projects: TransGas Coal-to-Liquids Complex (18,000 bpd)
2 x PRENFLO Gasification with MTG based on Coal
Mingo County, West Virginia
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Summary
Gasification will play an increasingly important role in our future. Oil and gas supply and demand do not match any longer.
February 2009: Co-operation Agreement signed between Elcogas and Uhde: Operating experience and engineering fully integrated into PRENFLO
Lessons Learned from >10 years operation of the Puertollano plant and decades of experience in coal gasification and all related down-stream processes provide full benefit to successful future projects
As a technology-driven engineering company, Uhde can act as integrated Licensor, E, EP or EPCM contractor – PRENFLO is a product
Depending on the application, PRENFLO is available with conventional steam generation (PSG) or direct quench mode (PDQ) with significant cost savings
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Thank you for your attention.
PRENFLO IGCC, Puertollano, SpainMay 2009 www.prenflo.com
Slide Number 1Does Gasification make any sense �@ ~50 US$/bbl?Slide Number 3Uhde‘s Gasification Highlights – SUMMARY:Uhde‘s proprietary Koppers-Totzek Gasification Process�First Entrained-Flow Gasification TechnologyFirst GE (Texaco) Coal Gasification Plant with radiant cooler�First HTW Coal Gasification Plant in commercial-scaleFirst PRENFLO Demonstration Plant – 1980‘s World‘s largest single-train IGCC: PRENFLO Gasification Elcogas, Puertollano, Spain�Feedstock: petcoke / coal with addition of biomassPRENFLO gasifier and waste heat boiler (PSG)PRENFLO Membrane Wall protected by the slag layerPRENFLO Gasifier Membrane WallPRENFLO Gasifier - erection of internals (Puertollano)Lifting of PRENFLO Gasifier / HP-Boiler (Puertollano)Puertollano IGCC: Operating ExperienceSlide Number 15The PRENFLO process with Direct Quench (PDQ)The PRENFLO process with Direct Quench (PDQ)PRENFLO gasifier �with Steam Generation (PSG)PRENFLO �with Direct Quench��1000 MWth, 40 bar �Slide Number 20Slide Number 21Slide Number 22Slide Number 23One of the latest projects:�TransGas Coal-to-Liquids Complex (18,000 bpd) �2 x PRENFLO Gasification with MTG based on CoalSummarySlide Number 26