Mikawa CO 2 Capture Pilot Plant Test of New Amine Solvent

Transcription

Mikawa CO2 Capture Pilot Plant Test
of New Amine Solvent
September
Sep
e be 10,
0, 2015
0 5
Satoshi Saito, Minoru Udatsu, Hideo Kitamuraa, Shinji Murai
Toshiba Corporation
© TOSHIBA CORPORATION 2015, All rights reserved.
1 / 22
Development
D
l
t off Toshiba’s
T hib ’
Carbon Capture
p
Technology
gy
2 / 22
R&D process of TOSHIBA’s CCS technology
P-36
P-23
P-35
V-3
GC
P-21
V-1
GC
P-16
I-1
P-14
P-15
I-4
P-17
P-19
P
P-12
P-51
I-14 P-33P-49
P-48
E-11
E-12
P-33
P-34
T
E-8
E-16
I-13
E-4
I-5
P-40
T
P-13
I-11
P-18
P-47
P-7
P-38
P-39
P-38
P-20
P-41
E-17
P-46
T
I-12
P-10
P-7
E-18
P-11E-3
T
I-9
P-27
P-25
P-26
P-6
P-11
45
I-8
E-19
T
P-50
I-2
P-8
I-10
E-13
GC
P
E-1
P
P-52
LC
P-9
Stirpper
I-16
P-10
P-3
I-6
P-43
42
P-2
P-9
P-11
P-1
E-5
E-7
I-1
I-1
I-1
I-1
I-1
T
LC
E-6
I-7
N2
O2
CO2
SOx
NOx
Amine Synthesis, Basic properties
measurement, System evaluation
byy system
y
simulator,, etc
Evaluation
a uat o o
of Basic
as c Properties
ope t es
and Absorption Performance
Overall Demonstration at
Mikawa - PCC Pilot Plant
Performance / Degradation
g
Evaluation by Small Loop
Design
g of Full Scale
Demonstration Plant
3 / 22
Toshiba PCC Pilot Plant at Mikawa
Location:
Plot Plan:
Turbine Unit #2
PCC Pilot Plant
Steam Turbine
Test Facility
Tokyo
ESP
Sigma Power Ariake Co., Ltd.
Mikawa Power Plant
Omuta City, Fukuoka, Japan
FGD
Stack
Boiler
Turbine Unit #1
47.5 MW Coal
C
Fired
Mikawa: Toshiba’s Showcase of Low Emission Thermal Power Technology
4 / 22
Mikawa PCC Pilot Plant - Schematic
5 / 22
Mikawa PCC Pilot Plant - Overview and Summary
Plant Outline
Location:
Omuta City, Fukuoka
Inside Mikawa Thermal Power Plant
(Property of SIGMA POWER Ariake Co.Ltd.)
Co Ltd )
Test Commenced: September 29, 2009
Carbon Capture
Post Combustion Capture
Technology: Amine-based Chemical Absorption (Toshiba’s Solvent System)
Capture Capacity: 10 ton-CO2 / day
Flue Gas Flow:
2100 Nm3 / hour ( from Coal Fired Power Plant )
* Test flue gas CO2 concentration adjustable from 4%(NGCC) to 30%(Steel works)
utilizing absorber and stripper exit gas recirculation and air bypass intake line.
Summary of Results (as of July 2015)
・ Cumulative 8680 hours of operation on a live flue
g
gas
of coal fired thermal power plant
・ CO2 Recovery Energy: less than 2.4 GJ/ t-CO2
(@90% CO2 Capture, CO2 Conc. approx. 12%)
・ Verified system stability over 2800 hours of
continuous operation.
Web link
http://www.toshiba
http://www
toshiba-smartcommunity
smartcommunity.com/en/smart
com/en/smart-grid/ccs
grid/ccs
http://www3.toshiba.co.jp/power/english/thermal/products/ccs/ccs.htm
6 / 22
Mikawa PCC Pilot Plant - Schedule and Tests
2009
2010
2011
2012
2013
2014
2015
8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12
TEST-1
Mod
M
TEST-2 o
d
TEST-3
SaftyInspection TES Modificatio
T-4
n
Modification
TEST-5
TEST-6
Safty
Inspection
Modification
TEST-7
Modification
Inspection &
Modification
TEST-8
Mod.
TEST-9
TEST10
Safty Inspection / Modification
TEST11
Modification
Inspection / Modification
TEST-12
Inspection / Modification
TEST-13
10,000
9,000
Test8
Performance Tests
8,000
Opera
rating hours
rs (h)
Start
7,000
6,000
5,000
Test6
Test2
Performance Tests
Test12
Performance Tests
Amine Tests
Test11
Test4
Test1
Test9
Amine Tests
Amine Tests
Test7
4,000
Process Evaluation
4%CO2 Test
2,000
0
'09/9
Test10
Performance Tests
3,000
1,000
Performance Tests
Test5
Performance Tests
Test3
Absorbent Life Test／Load Change Tests
'10/6
'11/4
'12/2
'12/12
'13/10
'14/8
'15/6
Date
Evaluation: Various amine solutions to seek low CO2 recovery
y energy
gy
Evaluation: Various components for system improvement
Test and Measurement: Effect of CO2 gas concentration on CO2 recovery energy
Test and Measurement: New amine emission control system
Demonstration tests for amine emission control under the MOEJ initiative are planed in Sep.-Nov.,
Sep Nov 2015)
MOEJ: Ministry of the Environment, Japan
7 / 22
Basic properties of new amine
solvent
8 / 22
Background
Past experimental result
R
R
Recovery ene
ergy (GJ/t‐CO
O2)
3.00  Sterically hindered secondary amine was
synthesized and tested
 No carbamate anion was observed
 2.4 GJ/t-CO2 was confirmed
X
Sterically hindered hindered
secondary amine solvent
2.80 N
n
2.60 OH
2.40 TCCS-7 in Trondheim (2013)
2.20 More detailed info. “Energy Procedia”, Volume 51, 2014, Pages 176-183
2.00 80
85
90
95
100
CO2 capture efficiency (%)
R
X N
Purpose of this study
H
O
n
C
3
H
- Comparison of the performance by the tertiary amine solvent
with the secondary amineʼs
9 / 22
VLE evaluation
②
New tertiary amine solvent
Secondary amine solvent
①
③
Comparison VLEs of new tertiary amine solvent(red) and steric hindered secondary
amine sol
solvent(blue)
ent(bl e)
 ①The new tertiary amine solvent has less loading capacity than the secondary amine solvent at 40 ºC
 ② The new solvent dissociate more CO2 than the secondary’s
y even at 100 ºC
 ③Expected cyclic capacity of the new solvent would be less than that of the secondary amine
10 / 22
Absorption rate at 40ºC
Absorption
n rate(mol‐CO
O2/mol・min
n)
0.010 New tertiary amine solvent
0.008 0 006
0.006 mass flow
fl
meter
CO2 sensor
Dimroth condenser
mass flow
controller
0.004 CO2
or
Air
0.002 heater
100ml
test tube
water bath
magnetic stirrer
0.000 0
0.2
0.4
0.6
0.8
CO2 Loading(mol‐CO2/mol‐amine)
C
Comparison
i
absorption
b
ti rate
t new ttertiary
ti
amine
i solvent(red)
l
t( d) and
d steric
t i hi
hindered
d d
secondary amine solvent(blue)
 The new tertiary amine solvent has a less absorption rate than the secondary amine solvent’s
at 40 ºC
11 / 22
Heat of reaction evaluation
DRC Evolution
(SETARAM Inst.)
Comparison reaction heat of new tertiary amine solvent(red) and steric hindered
secondar amine sol
secondary
solvent(blue)
ent(bl e)
 Heat of reaction for the New solvent is less than the secondary amine solvent’s
12 / 22
Pilot Plant Results
13 / 22
Pilot plant tests
Objectives
•
•
•
2014/A
2014/Aug.
To investigate and optimize operating parameters in
the pilot plant for new tertiary amine solvent
To seek the best CO2 recovery energy
To know degradation properties
Absorbent
•
New tertiary
y amine and several p
percent of
amine acting as a reaction promoter were
mixed.
Test conditions
•
•
Gas flow 2100Nm3/h
CO2 concentration 12%(dry)
 Metric ton scale amine solution was supplied by the chemical company in Japan on the
basis of NDA
 The evaluation tests had been carried out for one month
14 / 22
L/G test
Table . Experimental results of L/G test
L/G
CO2
efficiency
2.6
3.2
3.7
4.2
4.7
88
90
98
91
99
Rich loading (NL/L)
34
33
30
33
28
Lean loading (NL/L)
3
7
6
13
10
2.87
2.58
2.61
2.54
2.58
capture
CO2 recovery energy
((GJ/t-CO2))
Cf.
Test results for steric hindered secondary amine
L/G
2.1
2.9
3.8
CO2 capture efficiency
90
94
94
Rich loading (NL/L)
53
52
53
Lean loading (NL/L)
15
23
30
2 59
2.59
2 49
2.49
2 53
2.53
y energy
gy
CO2 recovery
(GJ/t-CO2)
Lean Solution
(Liquid)
Absorber
Cross
Heat
exchanger
Flue Gas
(gas)
St i
Stripper
Reboiler
 Appropriate L/G would be around 4.2
 Lager L/G would be required compared to steric hindered secondary amine absorbent
15 / 22
Stripper tower pressure
Stripper pressure dependence of CO2 capture efficiency
Liquid flow rate
efficiency
Pressure of the stripper
Contour
C
t
plot
l t off CO2 capture
t
efficiency;
ffi i
Li
Liquid
id fl
flow rate
t and
d stripper
ti
pressure are
taken on two axis
 Appropriate
A
i t stripper
ti
ttower pressure would
ld be
b around
d 80kP
80kPaG
G
16 / 22
Typical temperature profile of absorber tower
Lean
solvent
35C
3m
Lean solvent
rate (t/h)
Lean solvent
CO2 loading
(NL-CO2/L)
(NL
CO2/L)
Rich solvent
CO2 loading
(NL-CO2/L)
(NL
CO2/L)
New tertiary
amine solvent
12
12.0
32.6
Secondary
amine solvent
9.8
26.2
51.3
Gas
Gas temperature in absorber for new tertiary
amine is lower than secondary amine’s
Flue gas
35C
30
Absorber
40
50
60
Gas temp. (℃)
17 / 22
Result of optimization -Recovery energyNew amine (tertiary)
Steric-hindered secondary
amine
[past work]
Pressure stripper tower
(kPaG)
75
100
CO2 loading for rich
solution (NL/L)
38
55.7
CO2 loading for lean
solution (NL/L)
13
30.7
90 4
90.4
91 1
91.1
2.35
2.40
CO2 capture
efficiency (%)
CO2 recovery energy
(GJ/t-CO2)
18 / 22
Amine degradation performance
Formic a
acid conce
entration (m
mg/L)
180
steric hindered
secondaryy amine
160
140
New tertiary amine
120
100
80
60
40
20
0
0
200
400
600
800
Operating hours (h)
Comparison of formic acid concentration in new tertiary amine solvent and steric
hi d d secondary
hindered
d
amine
i solvent
l
t
 Significant
g
difference was not observed, however, new amine might
g be more stable
19 / 22
CO2 concentration dependence
There are various flue gas having different CO2 concentration
CO2 Reecovery Energy (GJ/t‐CO2)
Ex.
• Natural gas combined system: 4%
• Coal: 12%
• Steel lime kiln; 20%, hot blast stove; 28%
35
3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0
10
20
30
40
CO2 C
CO2 Concentration (%)
t ti (%)
CO2 recovery energy versus CO2 concentration in flue gas
 CO2 regeneration energy decreased with CO2 concentration increasing
 This data would be utilized for our customer to make their HB/MB in feasible studies
20 / 22
Summary
•
In view of actual application of CO2 capture system to power plants,
plants
Toshiba constructed its PCC Pilot Plant in Mikawa (Japan), which works
with actual live flue gas of a coal fired thermal power plant. The plant
has accumulated more than 8680 hours of operation to date.
•
The plant was used for new amine solvent development and evaluation.
The new tertiary
y amine solvent was p
prepared
p
and performance
p
tests
were carried out.
•
The new amine solvent demonstrated 2.35 GJ/t-CO2 as CO2 capture
p
energy consumption and it was almost same as that of steric hindered
secondary amine.
•
Better CO2 recovery energy with higher CO2 concentration in flue gas
was experimentally confirmed.
21 / 22
Thank you !
For more information, contact:
Mr. Satoshi Saito
Senior Manager
Power and Industrial Systems Research and Development Center
Toshiba Corporation Power Systems Company
e-mail: [email protected]
22 / 22

Mikawa CO 2 Capture Pilot Plant Test of New Amine Solvent

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