Oxy-coal combustion e Oxy coal combustion e test rig Facility Danila Cumbo, Nicola Rossi, Giancarlo Bene Enel - Engineering and Innovation Division 1 st Oxyfuel Combustion Conference Cottbus, September 8-11, 2009 experiences on a 3 MW experiences on a 3 MW elli, Marco Gazzino, Enrico Tosi
23
Embed
enel- Oxy-coal combustion experiences on a 3 MW … 5_B/enel- Oxy-coal... · Oxy-coal combustion e test rig Facility Danila Cumbo, ... Ash separa se technology Experiment ... 761%0.77,
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Experimental test: in flamExperimental test: in flam
1800
2000 T, °C
1000
1200
1400
1600
1800
ow
N°
2
200
400
600
800
Win
do
2000
T, °C
0
‐1000 ‐800 ‐600 ‐400 ‐200 0 200 400 600 800 1000
Distance from the center axis [mm]Air Case O2 Case 61% R
1000
1200
1400
1600
1800
w N°
1
200
400
600
800
1000
Win
dow
1° Oxyfuel Combustion Conference
0
‐1000 ‐800 ‐600 ‐400 ‐200 0 200 400 600 800 1000
Distance from the center axis [mm]Air Case O2 Case 61% R
Use: Public
e measurements Coal
6000
6000
O2-Coal 61% RBaseline air
e measurements Coal
500
5000
5500
500
5000
5500
15501600
3500
4000
45
ht, m
m 3500
4000
45
11501200125013001350140014501500
pera
ture
, °C
ght,
mm
2000
2500
3000
Furn
ace
Leng
h
2000
2500
3000
750800850900950100010501100
Tem
Furn
ace
Leng
1000
1500
010
0015
00
700
500
-500
500
500
-500
500
e, Cottbus 8 -11 September, 2009 17
Experimental test: in flamExperimental test: in flam
2
30
35
40 O2, Dry[Vol. %]
w 2
10
15
20
25
Win
dow
0
5
‐1000 ‐800 ‐600 ‐400 ‐200 0 200 400 600 800 1000
Distance from the center axis [mm]
Air Case O2 Case 61% R
25
30
35
40O2, Dry[Vol. %]
Air Case O2 Case 61% R
w 1
5
10
15
20
Win
dow
1° Oxyfuel Combustion Conference
0
‐1000 ‐800 ‐600 ‐400 ‐200 0 200 400 600 800 1000
Distance from the center axis [mm]
Air Case O2 Case 61% R
Use: Public
e measurements Coal
0
O2-Coal 61% RBaseline air
0
e measurements Coal
5000
5500
6000
40
5000
5500
600
0040
0045
00
242628303234363840
ncen
trat
ion,
%
m500
4000
4500
m
2500
3000
350
6810121416182022
Oxy
gen
con
Furn
ace
Leng
ht, m
m
2500
3000
35
Furn
ace
Leng
ht, m
m
0015
0020
00
0246
000
1500
2000
500
10
-500
500
500
1
-500
500
e, Cottbus 8 -11 September, 2009 18
Conclusions
Air in-leakage into the systemsignificantly especially at highAir-in leakage
During O2-Coal trials it was oto an increase of NOx emissiocauses an increase in NOx em
NOx Emissions
causes an increase in NOx emof O2 injected in primary duct
A large data set of in-flame mCoal as fuels The data show tFl Coal as fuels. The data show tthe furnace in Oxycombustionaffected from the Recycle Rat
Flame
characterization
Heat transfer efficiency in comRecycle ratio, with a trend of dresult with the air case the op
Heat Transfer
1° Oxyfuel Combustion Conference
Use: Public
m affects the CO2 content in flue gas h Recycle Ratio
bserved that an increase in Recycle Ratio leads ons.The injection of Oxygen in the primary duct missions which depend strongly on the amount missions which depend strongly on the amount t
measures have been taken with both NG and that flame shape and temperature field inside that flame shape and temperature field inside n are different from the air-case and are io as expected
mbustion chamber is greatly influenced by decrease with increasing R. Comparing such
ptimum R was close to 68%.
e, Cottbus 8 -11 September, 2009 19
ContentsContents
OXYFUEL BURNER
USEDTEST RIG FACILITYFOSPER
1° Oxyfuel Combustion Conference
Use: Public
EXPERIMECONCLUSIONS
EXPERIMENTALTEST
e, Cottbus 8 -11 September, 2009 20
AcknowledgementsAcknowledgements
P f hi k i d i h Part of this work was carried out in the of the European Research Fund for CoalSteel Project "Friendly coal"