update to vattenfall’s 30mwth pilot plant activities

© Vattenfall AB

Update to Vattenfall’s 30MWth Pilot Plant Activities

2nd Young Researchers Forum onOxyfuel Combustion R&D Programme18th – 19th September 2008

Jürgen JacobyVattenfall Research & Development [email protected]

© Vattenfall AB 22

Vattenfall in brief

• Europe’s fourth largest generator of electricity and the largest generator of heat

• Vision: To be a leading European energy company

• Main operations in Sweden, Finland, Denmark, Germany and Poland

• Electricity generation, transmission, distribution, sales and trading

• Heat generation, distribution and sales

• More than 32,000 employees

• Vattenfall AB is wholly owned by the Swedish State

© Vattenfall AB 3

Vattenfall’s generation of electricity 2004, TWh

CO2–emitting generation

CO2–neutral generation

© Vattenfall AB 4

Vattenfall’s target: 50% reduction of CO2 emissions by 2030

0 %

20 %

50 %

90 %

1990 2010 2030 2050

EU’s target: reduce emissions by 20% from 1990 to 2020

Vattenfall’s target:Reduce emissions by 50% from 1990 to 2030 - Technique?

- Politics?- Economy?

© Vattenfall AB 5

Test plant

0,1-0,5 MWth< 3 Mio. €

Pilot plant

30 MWth~ 70 Mio. €

Demonstrationplant

300-600 MWth~ 400 Mio. €

Commercialplant

~ 1,000 MWth

• Research

• Basic principles

• Combustion characteristics

• Demonstration of the process chain

• Interaction of components

• Validation of basic principles and scale-up criteria

• Long term characteristics

• Non-commercial

• Verification and optimization of the component choice, the process and reduction of risks

• Must be commercially viable incl. subsidies

• Competitive in the market at that time

• No subsidies

2004 2008 2013-2015 ~2020

Time frame for the CCS project from Vattenfall

© Vattenfall AB 6

The Oxyfuel pilot plant

Furnace

FGD

ESP

CO2 plant

FGC ASU

© Vattenfall AB 7

Basic data of the plant

Boiler:Indirect dust fired

Thermal powerSteam productionSteam parameter

30 MWth

40 t/h25 bar / 350 °C

Fuel: pulverized lignite (Lausitz)

LHVMoistureCoal demand

21 MJ/kg10,5 %5,2 t/h

Media: Oxygen (purity > 95%)CO2 (liquid)

8,5 t/h9 t/h

Other: Required areaInvestment

14.500 m²~70 Mio. €

© Vattenfall AB 8

Plant overview (Ref. Alstom)

Furnace

ESP FG-Condenser

CO2-ProcessFGD

Steam-HEx

Air

Burner

ASU

Start-Burner

Cold Recirculation

2. Pass

Catalysator

3. Pass

Steam-HEx

Steam-HEx

Air

Air

PulverisedCoal

SZ2

Oxygen

Steam-HEx

Nitrogen

Sealgas<1,2 bar

Sealgas6 bar

Hot Recirculation

Ash

Vent gas

© Vattenfall AB 9

Operating mode of the pilot plant

Boiler

Dry coal

Mixer

CO2 -Storage

Operating mode Flue gas quantityStart up /

conventional air operation3,5 x 100 % Oxyfuel

Transfer mode air-mode to oxyfuel mode

1,75 x 100 % Oxyfuel

Oxyfuel mode 100 %

Stac

k

Air

ca. 1/3CO2 -

liquefactionFlue gas

condenserESP FGD

ca. 2/3

Dry de-sulpherisation

© Vattenfall AB 10


ASU

Boiler ca. 1/3

ca. 2/3 CO2 -StorageSt

ack

ca. 2/3

ca. 1/3CO2 -

liquefactionFlue gas

condenserESP FGD





Oxyfuel mode 100 %

Dry coal

Mixer

© Vattenfall AB 11


Boiler

ca. 2/3 CO2 -StorageSt

ack

CO2 -liquefaction

Flue gas condenserFGDESP





Oxyfuel mode 100 %

Dry coalASU

ca. 1/3Mixer

© Vattenfall AB 12

The oxyfuel furnace

Large number of measurement levels for flame access from front and both sidewalls.

⇒ 6 levels with 3 ports at each wall in the first draft.

Each level will be accessible to perform experiments.

Some technical data T ≈ 1000 °C at furnace outletTFG ≈ 170°C at boiler outlet (after Eco 1)

Eco 5

SH 1

SH 2

Air pre-heater

Eco 4

Eco 3

Eco 2

Eco 1

Level 1

Level 2

Level 3

Level 4

Level 5 L 7

L 8

L 9

L 10

L 11

Level 12

Level 13

Level 14

SCR 1

SCR 3

SCR 2

Burner

Steam drum

Ash transport

OFA 1 & 2

SCR optional

Level 6

13m high4x4m cross area

© Vattenfall AB 13

Some photos

© Vattenfall AB 16

Available measurement equipment

• 2 stationary hot gas multi-component FG analysers in the furnace house

(H2O, CO, CO2, O2, NO, NO2, HCl, SO2)• 2 portable cold gas multi-component FG analysers

(CO, CO2, O2, NO, NO2, SO2)• 1 portable hot gas multi-component FG analysers

(H2O, CO, CO2, O2, NO, NO2, HCl, SO2)• Gas suction probes, suction pyrometers• High temperature anemometer will be bought (delivery

problems)• Pitot-tubes and dust sampling probe• Various pumps, filters, heated tubes etc.• Ultrasonic mass flow meter, can be used for measurement of

cooling water flow.• Corrosion and deposit probesAdditional equipment can and will be applied.

© Vattenfall AB 17

Number of measurements in the pilot plant

~130

~60

~250

~1200

Temporary measurement data Data from control system

Continuous measurement data Others, external analysis, etc.

Based upon the measurement plan, an instrumentation of the pilotplant has been prepared. In total, ~1650 different measurements can / will be made in the pilot plant.

Four different groups of data:

- temporary measurements

- continuous measurements

- measurement within control system

- external analyses, e.g. fuel & ash composition, etc.

© Vattenfall AB 18

CO2 storage at Altmark gas field

• Project will be running for 3 years: 2008-2011

• Total injection volume about 100.000 ton CO2

⇒ < 0,5% of the total storage capacity

• Process: – captured CO2 from oxyfuel pilot plant at

Schwarze Pumpe– transport of liquefied CO2 by truck to Altmark

gas field, experimental site, pipeline transport only feasible for demo plant

– injection into a certain section of the gas field

• The project consists of:– design and erecting of injection system – reconstruction of 1-2 wells for injection – implementation of monitoring system– establish R&D program(s) with universities

and industrial partners.

© Vattenfall AB 19

Demo : Variants of CO2-Reduction Technologies

alternative 1

New Oxyfuel Boiler(Erection beside the existing Boiler)

alternative 2

CO2-Post Combustion(behind existing Mono-Boiler)

update to vattenfall’s 30mwth pilot plant activities

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