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Enel's CCS Project
Current Status Overview
Stefano Malloggi
Roma, 18 ottobre 2011
Uso: Aziendale
2
ZEPT Post-combustion capture and storage demo project
Project goal
To retrofit one 660 MWe
coal fired unit of Porto Tolle
power station with CO2
capture equipment and
start CO2 underground
storage by the end of 2015
P1 = Site of the Enel’s post-combustion capture pilot plantP2 = Site of the Eni’s injection pilot plant
Site of the CCS demo power plant
P1
P2
Porto Tolle
P1 = Site of the Enel’s post-combustion capture pilot plantP2 = Site of the Eni’s injection pilot plant
Site of the CCS demo power plant
P1
P2
Porto Tolle
Porto Tolle
Uso: Aziendale
3
• Flue gas flow rate: 810.000 Nm3/h
• Capacity: 1 Mt of CO2 per year (250 MWe equivalent)
• Capture technology: post combustion ammine based
• CO2 removal efficiency: 90%
• Storage: deep saline aquifer off-shore (about 100 km from the power plant)
• Plant in operation: by the end of 2015
P.To Tolle demo projectMain features of the demo plant
P1 = Site of the Enel’s post-combustion capture pilot plantP2 = Site of the Eni’s injection pilot plant
Site of the CCS demo power plant
P1
P2
Porto Tolle
P1 = Site of the Enel’s post-combustion capture pilot plantP2 = Site of the Eni’s injection pilot plant
Site of the CCS demo power plant
P1
P2
Porto Tolle
Porto Tolle
Uso: Aziendale
4
ZEPT Post-combustion capture and storage demo
project
General planning (*)
Phase 1
Phase 2
Phase 3
Phase 4
20122006 2013 201520142007 2008 2010 20112009
Capture process testsat lab scale
Geological storage site characterization and preparation
Feasibility study, design and construction of a CCS demo plant
Operation of the capture pilot plantand pilot tests on transport & injection
Technology follow-up
Design and construction of a10.000 Nm3/h pilot plant
Geological studies for site selection
(*) time schedule subject to be modified in relation to P.to Tolle Power Station authorization procedure
Uso: Aziendale
5
• Feasibility study of P.to Tolle demo project
• Sorbent characterization• Pilot scale test of MEA sorbent
• Selection of the capture technology • Development of the FEED(*) for transport pipeline and injection infrastructure • Selection and assessment of the storage site• Development of the financing plan
CCS – The main activities in progress
1
2
(*) Front End Engineering Design
Uso: Aziendale
6
Selection of the process and conceptual design development
Selection of the potential technology providers by international level survey
Definition of a scoring matrix and selection of the top 4 by a question&answer procedure
Development of 4 FEED and• selection of the BAT for capture and compression section
• Test of the sorbent used by the selected tecnology provider on the 10.000 Nm3/h pilot plant of Brindisi
Selection of the capture technology1
Front End Engineering Design
- Process Flow Diagrams e Process & Instrumentation Diagrams
- Mass & energy balance
- Detailed design of: main components and key items, civil works, electric system and automation
- Materials
- Plant general lay out and lay out of piping
- Quantities and weights
- Planning of engineering and mounting
- Investment cost (construction engineering, R&C system, components, piping, civil works, BOP, mounting, ecc) and O&M cost evaluation (chemicals, ee, water, spare parts, ecc)
P.To Tolle demo project - Feasibility Analysis
CO2 path
Power Unit Capture
CO2
I njection Deep saline aquifer
Compression and transport
Cap rock –impermeable layer
1 km
CO2 path
Power Unit Capture
CO2
I njection Deep saline aquifer
Compression and transport
Cap rock –impermeable layer
1 km
Work flow
Uso: Aziendale
7
1
Pre-screening completed. Selected a reservoir with an estimated capacity of 200 Mt of CO2
(*) Activity Flow chart
3. Risk analysis
Activities in progress
Selection and assessment of the storage site
2. Geological site modeling and appraisal well design
4. Appraisal well construction and
injection test
(2013)
1. Data assessment
and base line
(*) able to storage the total CO2 mass rate of the power station for 25 years
Porto TollePower plant
P.To Tolle demo project - Feasibility Analysis
The activities are carried out in collaboration with eni and italian/international scientific institutions (INGV, OGS, CESI, IFP, Schlumberger)
Uso: Aziendale
8
Start up and commissioning July 2010
Three experimental campaigns performed:
baseline tests with MEA 20%wt
parametric tests with MEA 30-40% wt
reclaiming tests
emission measures
Numbers:
2500 h of operation
5000 ton of CO2 captured
More than 200 visitors in six months (after
inauguration)
Activities
Flue gas flow: 10.000 Nm3/h Capture capacity: 50-60 t CO2/day Capture efficiency: 85-95% Absorption temperature: 45-50 ºC Desorption pressure: up to 2.5 barg CO2 purity: >99%,vol SO2 at capture section inlet: < 20 mg/Nm3
particulate at capture section inlet: < 0,25 mg/Nm3
CO2 capture pilot plant Highlights
Main features
2
Uso: Aziendale
9
MEA 20% MEA 30% MEA 40%
Gj/
ton
CO
2
Solvent flow rate - mc
Campaign Gj/ton CO2 %
MEA 20 % 4,1 0
MEA 30 % 3,4 - 17
MEA 40 % 3,02 - 26
~17%~26%
Gj/
ton C
O2
MEA 20% MEA 30% MEA 40%
2 Brindisi pilot plant - MEA test results
MEA 40 % reduction over 25% compared to MEA 20 % and over 15% respect
to MEA 30%
Uso: Aziendale
10
2 Reduction of the energy impactincreasing the capture process performance
New technology development path
15105 20
Ammine based sorbents (now in Brindisi pilot and in PT demo in the future)
LIQUID SORBENT
Technologies Enel conseders of interest in the short-mid term period
2
4
6
8
10
12
14
Loss o
f effi
cie
ncy (
%)
years
• In the first phase the research activities will be focused on the ammine based sorbents (used in P.to Tolle application)
• In the second phase the objective will be to characterized and select 2nd generation sorbents potentially suitable for improving the capture process performances. The goal is to reduce the energy impact of CCS on the generation unit in the range 40%-50% (for commercial plant built after 2025)
Mid-Long term tecnologies (ex. solid sorbents, membrane, ionic liquid, hydrates)
The different sorbents will be tested on the pilot plant of Brindisi since 2011 with the aim of verifying the energy penalty (mid term objective: reduction of
40%)
New sorbents (dual phase, ammino-acid, new ammine mix, ammonia)
Uso: Aziendale
11
Thank you for your kind attention