Slajd 1

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Super critical and oxy-combustion for coal power
generation demonstration projects
Wojciech Nowak, Czestochowa University of
Technology, speaker Tadeusz Chmielniak, Andrzej
Ziebik Silesian University of Technology Roman
Walkowiak BOT Elektrownia Turow S.A
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MOTIVATION

• Reliance on coal is a critical factor that
  forces Europe towards efficient and clean
  combustion technologies,
• For countries like Poland, that have no other
  choice but coal, development of a more
  efficient fossil fuel power plant technology
  is currently the only economically viable
  option to reduce the quantities of CO2,
• Lignite constitutes about ¼ of Polands fossil
  fuel
• resources and is the least expensive energy
  source.
• Once-through CFB supercritical boiler appears to
  be one of the best solutions for lignite.

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OBJECTIVE
Supercritical CFB Boiler is a Promising
Perspective Towards CO2 Abatement (280
bar/600C/620C , lignite)

• General objectives for collaborative action
• move forward from the existing CFB technology to
  supercritical once-through advanced boilers,
• build a demonstration unit 450 MWel (280
  bar/600C/620C , lignite),
• operate and test the unit in order to make this
  technology a commercially viable option for
  Europe, especially in countries with substantial
  lignite deposits,
• integration of biofuel technologies.

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EXPERIENCE
TUROW AND PARTNERS - VALUBLE ASSET FOR ZERO
EMISSION FOSSIL FUEL POWER PLANT TECHNOLOGY

• COMPLETE MODERNIZATION OF SIX POWER UNITS
  (Turow is now the biggest power plant in CFB
  technology based on lignite),
• UNIQUE OPERATIONAL EXPERIENCE,
• ACIVE PARTICIPATION IN NATIONAL AND EUROPEAN
  RESEARCH PROJECTS (CFB Combustors Processes
  in large-scale circulating fluidized bed
  combustors, UPSWING Unification of power plant
  and solid waste incineration, FBCOBIOW Safe
  co-combustion of biomass and biowaste in FB
  plants),
• PRESTIGOUS AWARDS IN THE FIELD OF ENVIRONMENT
  PROTECTION.

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A UNIQUE OPPORTUNITY FOR A DEMONSTRATON PROJECT

• There is enough lignite in a near-by coal mine
  for another power unit (both companies belong to
  the same capital group BOT Gornictwo i
  Energetyka the biggest power supplier in
  Poland),
• Construction of a new power unit is the main
  strategic goal of Turow power plant,
• The company has developed organizational capacity
  to run big investment projects,
• Turow would be one of the best reference sites
  for clean coal technologies, not only for the new
  member countries. Poland, like many other states
  in Europe, has to rely on coal,
• Commissioning and test runs of a new power unit
  are foreseen around 2012,
• Knowledge gained from the project will be a
  valuable input on a European scale for new fully
  commercial applications of even more efficient
  units, supposedly with oxy-fuel and CO2 capture
  technologies.

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POTENTIAL PARTNERS
COLLABORATIVE ACTION FOR AN ADVANCED CFB UNIT
DEMONSTRATION PROJECT IN TUROW

• The project is supposed to be run by leading
  industrial and scientific organizations in the
  European power sector
• Foster Wheeler Energia Oy,
• Siemens,
• VTT Process,
• BOT GiE,
• BOT Elektrownia Turow S.A.,
• Instytut Energetyki,
• Politechnika Czestochowska, Politechnika Slaska,
• Energoprojekt Katowice,
• open call for another partners.

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Circulating Fluidized Bed Oxy-Combustion for CO2
Abatement demonstration project
Oxygen-Enriched Combustion the process where the
oxygen concentration in the inlet gas mixture
(O2N2, O2N2CO2, O2CO2) exceeds 21 Results
higher concentration of CO2 in the flue gas.
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MOTIVATION
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OBJECTIVE
CFB power plant working with O2 instead of air is
a more viable option, particularly in comparison
with PC systems for CO2 capture due to the
recirculation of solids which could be cooled
down before their return to the bed and
consequently the control of the temperature could
be achieved more effectively
PC and CFB boilers with flue gas
recirculation Mainly for PCs Problems SO2, NOX,
PM, etc.
CFB boilers with higher recirculation of
solids CFB to avoid problems in PCs Problems
erosion
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Scientific and Technical Approach

•  To better integrate the processes, thereby
  reducing overall energy consumption and
  investment costs
• To establish a 50 MWe CFB Oxy-Combustion
  demonstration plants
• To modernise excisiting PC power plants
•  
• More specifically
•  The CFB boiler has to be developed and optimised
  for this concept
• Combustion chemistry and kinetics to provide
  design and scale-up data
• Verification of developed flue gas cleaning
  equipment
• Material selection for new flue gas environment
• The long term operational properties at large
  scale, such as slagging, fouling and corrosion
• Finding new integration possibilities within
  power plants, especially if a new type of ASU is
  developed
• Oxy-fuel combustion, performance and design basis
• Heat transfer and temperature profiles
• Effects on bed material, particle size
  distribution
• Performance vs. criteria in integrated system
• Sulphur absorption mechanisms and rates in
  O2/CO2 environment
• NOx, CO2 and other emissions

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Process integration
CFB
STEAM CYCLE
INTEGRATION

• CO2 sequestration
• possible conceptions
• chemical absorption
• physical absorption
• membrane techniques
• cryogenic separation

ASU
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POTENTIAL PARTNERS
BOT Elektrownia Turow Poland
Technische Universität Hamburg-Harburg Germany
Foster Wheeler Energia OY Finland
Instituto Nacional de Engenharia e Tecnologia Industrial - INETI Portugal
Czestochowa University of Technology Silesian Universityof Technology Poland
VTT Process Finland
Universitá degli Studi di Napoli "Federico II" Italy
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Roadmap/OxyCFB development
Foster Wheeler OXYCFB Concept -Design 500 MWe

• OXYCFB Demo 1
• 20 50 MWe
• O2 (21 35 )

Demo 2 OXYCFB OTU Unit -250 MWe
2004
2006
2008
2010
2012
2014
EU Consort. Demo 1
PHASE 1 OXYCFB Process study OXYCFB power
plant Cost study Market study
EU Consortium Demo 2
RD in consortiums
Private RD