CaOling Project - First experiences on the 1,7MWt calcium...
Transcript of CaOling Project - First experiences on the 1,7MWt calcium...
CaOling Project – Scope and Overview
CaOling Project - First experiences on the1,7MWt calcium looping pilot in La Pereda
2 9 | 0 6 | 1 2endesa Subdirección de Ingeniería e I+D
Subdirección de ingeniería e I+D
A. Sánchez-Biezma*, L. Diaz**, J. López***, B. Arias****, J. Paniagua*, M.Lorenzo**, J. Álvarez***, J.C. Abanades****
*Endesa Generación, Madrid, Spain.
**HUNOSA, Oviedo, Spain
***Foster Wheeler Energía S.L.U, Madrid, Spain.
**** Spanish Research Council (CSIC-INCAR), Oviedo, Spain.
CaOling Project – Scope and Overview
CaOling Project - Development of Calcium looping
CaOling Project started on December 2009 as a three-years project to develop and demonstrate post-combustion calcium looping in a pilot-scale unit whichis fully integrated with a power plant.
Subdirección de ingeniería e I+D
2
Partners:
CaOling Project – Scope and Overview
Concept
CARBONATORCARBONATOREXISTINGEXISTING
CaCO3
Flue gas“without” CO2
OXY-FIREDCFBC
OXY-FIREDCFBC
Concentrated CO2
O2
Subdirección de ingeniería e I+D
3
CARBONATORCARBONATOREXISTINGPOWER PLANT
EXISTINGPOWER PLANT
CaOFlue Gas(FCO2)
Coal Air
CFBCCALCINER
CFBCCALCINER
CoalCaCO3
(F0)CaOPurge
2
Air
N2
ASUASU
CaOling Project – Scope and Overview
CaOling Project. Work plan
WP1: Lab-Scale pilot testing
WP2: Sorbent Properties
WP3: Reactor modelling andscale-up tools
Leader Other partners
Subdirección de ingeniería e I+D
4
WP4: 1,7MWt Plant design and
erection
WP5: Experimental campaignsin the 1,7Mw test facility
WP6: Scaling parameters forindustrial plant demo
WP7: Coordination anddissemination
All
CaOling Project – Scope and OverviewLa Pereda CO2 capture pilot plant - Location
Subdirección de ingeniería e I+D
5
CaOling Project – Scope and Overview
The 1,7MWt experimental facility is located at the La Pereda power plant.
La Pereda is an existing 50MWe CFB power plant.
La Pereda CO2 capture pilot plant
Subdirección de ingeniería e I+D
6
FacilityArea
CaOling Project – Scope and OverviewLa Pereda pilot plant - Concept
Subdirección de ingeniería e I+D
7
CaOling Project – Scope and OverviewLa Pereda CO2 capture pilot plant - Main equipment
ESP stack
Gas inlet tie point
Gas outlet tie point
Reactors
Metallic structure
Pipes andgas cooler
CaOling Project – Scope and OverviewLa Pereda CO2 capture pilot plant - Main equipment
ESP stack
Gas outlet tie pointBurners and valveCO2 y O2 Tanks
Solid removal system
Gas outlet tie pointBurners and valve
skids
Coal and limestone feedingsystem
CO2 y O2 Tanks
Reactors
CaOling Project – Scope and OverviewLa Pereda CO2 capture pilot plant - Main equipment
ESP stack
Gas outlet tie point
Propane Tank
Control and electric systems room
O2 & CO2 tanksGas outlet tie point
Fans
Solid removal system
O2 & CO2 tanks
CaOling Project – Scope and Overview
Status of the pilot plant-Building finished in September 2011-Start of cold commissioning: October 2011- Start of hot commissioning: January 2012- Operational hours with coal combustion (dual fluidized bed mode): ~ 800 h- Operational hours in CO2 capture mode : ~ 160 h-Initial test carried out with the calciner in air mode- First validation under oxy mode in the calciner
La Pereda pilot plant – STATUS
Subdirección de ingeniería e I+D
11
Carbonator temperature (ºC) 600-715
Carbonator superficial gas velocity (m/s) 2.0-4.0
Inlet CO2 volume fraction 0.12-0.14
Inlet SO2 concentration (mg/m3) 100-250
Inventory of solids in the carbonator (kg m-2) 100-1000
Maximum CO2 carrying capacity of the solids 0.10-0.70
CO2 capture efficiency 0.4-0.95SO2 capture efficiency 0.95-1.00
Main parameters in the carbonator reactor during CO2 capture tests
CaOling Project – Scope and Overview
Effect of carbonator temperature Effect of inventory of solids on thecarbonator
0.8
0.9
1
cap
ture
eff
icie
ncy 710
730
Ca
rbo
na
tor
tem
per
atu
re(º
C)
0.8
0.9
1
cap
ture
eff
icie
ncy
800
1000
Inve
nto
ryo
fso
lid
s(k
g/m
2)
Results – dynamic testing
Subdirección de ingeniería e I+D
0.4
0.5
0.6
0.7
0.8
11:00 11:10 11:20 11:30 11:40 11:50
CO
2ca
ptu
ree
ffic
ien
cy
650
670
690
Ca
rbo
na
tor
tem
per
atu
re(º
C)
ECO2 eq
ECO2
Carbonator Temperature0.3
0.4
0.5
0.6
0.7
17:00 17:10 17:20 17:30 17:40C
O2
cap
ture
eff
icie
ncy
0
200
400
600
Inve
nto
ryo
fso
lid
s(k
g/m
2)
ECO2 eq
ECO2
Carbonator inventory
CaOling Project – Scope and Overview
1 15
- Total inventory of solids in carbonator = 300-800 kg/m2- Average carbonator temperature= 670 ºC- Xave = 0.3-0.1
Results – steady state testing
Subdirección de ingeniería e I+D
0
0.2
0.4
0.6
0.8
10:00:00 11:00:00 12:00:00 13:00:00 14:00:00 15:00:00 16:00:00
CO
2ca
ptu
ree
ffic
ien
cy
0
3
6
9
12
CO
2vo
l%ECO2 eq
ECO2
CO2 in
CO2 out
Deliberate alterationof solid circulation rates
Restart of solidcirculation
CaOling Project – Scope and Overview
0.95
1.00
0.12
0.15
SO2 capture in the Ca-looping facility
Results – SO2 capture
Subdirección de ingeniería e I+D
0.80
0.85
0.90
3:00 5:00 7:00 9:00 11:00 13:00 15:00
E SO
2
0
0.03
0.06
0.09
XC
aSO
4
ESO2 carb
ESO2 calc
Experimental
Calculated
CaOling Project – Scope and Overview
0.3
0.4
0.5
0.6
,XN,X
CaS
O4
Xave
XN (Grasa et al 2006)
XCaSO4 experimental
XCaSO4 calculated
CaO utilization0.4
0.6
0.8
1
EC
O2
400
600
800
1000
1200
Inve
nto
ryo
fso
lids
(kg/
m2)
ECO2 eq
Evolution of sorbent utilization with “lifetime” of particles in the system
Subdirección de ingeniería e I+D
0.0
0.1
0.2
0 5 10 15 20 25 30 35
N th
Xav
e,X
0
0.2
11:10 11:20 11:30 11:40 11:50 12:00
0
200
400
Inve
nto
ryo
fso
lids
(kg/
m
ECO2 eq
ECO2
Carbonator inventory
dtXN
EFN
t
aveCa
tcarbCO
th 0
)(2Number of times that the inventory
of CaO is carbonated up to Xave
CaOling Project – Scope and Overview
Calcination oxy mode
Results – oxycalcination
Subdirección de ingeniería e I+D
16
Calcination air mode
CaOling Project – Scope and Overview
• A flexible experimental facility has being constructed in LaPereda Power Plant aiming to validate the technology in the1MW’s size
• Successful proof of concept of postcombustion Ca-looping incontinuous mode of operation with two interconnectedCFBCs at the MWth scale.
Subdirección de ingeniería e I+D
CFBCs at the MWth scale.
• CO2 capture efficiencies over 90% achievable in a CFBcarbonator reactor operating with “standard” solids, bedinventories, gas velocities and solid circulation rates.
• SO2 capture in the CFB carbonator over 95%.
CaOling Project – Scope and Overview
Subdirección de ingeniería e I+D
18
More information in www.caoling.eu
CaOling Project – Scope and Overview
Subdirección de ingeniería e I+D
19