Status Workshop 08.07.2005 FZJ Prof. Singheiser 1 Linde AG Business Unit Linde Engineering...

Status Workshop 08.07.2005 FZJ Prof. Singheiser

1Linde AG Business Unit Linde Engineering

“ENCAP”

Enhanced Capture of CO2

Status: July 2005 Dr. Ciattaglia



Project costs : 22,2 Mio Euro (EC Contribution: 10,7 Mio Euro)

Start : March 2004

Duration : 5 years

Some partners:

for power station operation: Vattenfall, RWE

for power station construction/turbines: SIEMENS, Alstom

for oxygen generation/supply: Air Liquide, BOC, Linde

for processing/engineering: Lurgi, Mitsui Babcock, Statoil, Linde

for material testing/developing: SINTEF, TNO, Uni Twente, IFP



•Project Overview

•Progresses



Project goals

Development and optimisation of emerging CO2-capture technologies and processes for power generation based on fossil fuels meeting the following targets:

at least 90% CO2-capture rate

50% CO2-capture-cost reduction Reference: 50-60 Euro/t captured CO2.

ENCAP targets are the enhacement of CO2-capture efficiency and the reduction of CO2-capture costs.



Project timing and structure

• Timing: five years (2004-2008), 2 phases, start of project: March 2004

Phase I: research and basic experimental activities on candidate technology concepts (months 1-30).

Phase II: research and large scale verification of one/two candidate technology concepts selected on the basis of Phase I results.

ENCAP timing consists of two main phases.



ENCAP is structured in six sub-projects, SP.

• StructureRTD activities structured in 6 sub-projects (important participants):

SP1 Process and Power Systems (Vattenfall, RWE,Siemens, Alstom, Linde LE)(definition of power plant processes, reference plants, bench marks)SP2 Pre-Combustion Decarbonisation Techn. (RWE, Lurgi, Siemens, AirL)(IGCC, IRCC, oxygen from an cryo ASU)SP3 OxyFuel Boiler Technologies (Vattenfall, AirL., Mitsui Babcock Energy)(coal, natural gas with oxygen from an cryo ASU)SP4 Chemical Looping Combustion (Alstom, SINTEF, IFP,TNO)(oxygen transport by metal oxides)SP5 High-Temperature Oxygen Generation for Power Cycles (BOC, Statoil, SINTEF, TNO, Univ. Twente, Linde LE), SP Leader: LINDE LE.(membrane developments)SP6 Novel Pre-Combustion Capture Concepts (Alstom, Siemens, AirL)



SP5 is focussed on the development of high-temperature oxygen generation systems.

SP5: High Temp. Oxygen Generation for Power Cycles

Goals: identification, evaluation and ranking of promising high temperature oxygen generation process options, to be effectively integrated in power plant cycles with CO2 capture.

Organisation: 2 phases

phase I: development of three promising high temperature oxygen generation routes, based on ceramic materials and either O2-transport or O2-storage, to enable economic comparison and selection of the most promising option (first 18-months)

phase II: further validation of the selected option



WP5.5Stability

definition of materials

WP5.1Oxygen process

selection and integration

WP5.4Oxygen transport

membrane

WP5.3

CAR process

WP5.2Oxygen

separator membrane

Statoil

TNOSINTEFUTwente

SINTEF TNO UTwente

LindeSiemens

RWEBOCAP

SP5 is structured into five interacting work packages



•Project Overview

•Progress



WP5.1 Oxygen process selection and integration

Definition of a stepwise procedure for the selection of one most promising power plant with integrated high T oxygen generation system (Milestone month 18).

First economic evaluation of preselected, most promising scenarios with integrated oxygen generation systems.

A selection procedure for the identification of the most promising integration power plant scenario was defined



WP5.2 Development and validation of oxygen separator membrane for power plant cycle applications

Selection of the basis composition CaTiFeO for the development of a membrane system dense layer + porous support.

Identification of the methodologies for membrane system manufacture.

WP5.3 Development of CAR process

Identification of new materials with oxygen recovery capacity exceeding by a factor 3-6 the standard CAR materials and allowing a decrease in the process temperature by about 200 °C.

Found the phenomenon of “restoration” of perovskite structures enabling thus extended material life time.

Material screening, testing and characterisation were focused by WP5.2 and WP5.3.



Principle of the CAR Process(Ceramic Autothermal Recovery)

air

steam/CO2N2

steam/CO2 and O2

regenerator layer

regenerator layer

perowskite pelletslayer



WP5.4 Reactive oxygen transport membrane system

Calculation and upgrading of a power plant concept with integrated OTM-reformer reactor or OTM separator

Feasibility study on OTM + reformer reactor

Data on material and on long term stability tests were collected before ENCAP

WP5.5 Stability evaluation of high temperature oxygen generation methods

Intensive work on WP5.3 materialsExperimental confirmation of the “restoration” phenomenon (SINTEF)Stability tests (“accelerated life-time tests”, Twente)

The integration of the OTM unit in power plan was the main issue of WP5.4



Month 30

WP5.1 Process integration

WP5.2 Oxygen separator

WP5.3 CAR process

WP5.4 Oxygen reactor

WP5.5 Stability issues

Month 18

Key Milestone: Selection process option

Phase 2: Validation of the selected

processDesign concept

of a scaled-up test unitfor this process

Next steps for SP5

Month 18 is SP5 next critical milestone.



thank you

for your attention

Status Workshop 08.07.2005 FZJ Prof. Singheiser 1 Linde AG Business Unit Linde Engineering...

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