2nd Post Combustion Capture Conference September 17th-20th, 2013

Takeshi Okumura Kawasaki Heavy Industries, Ltd. (KHI)

Study on Solid Adsorbent for CO2-Capture from

Post Combustion Gases Utilizing Low-Temperature Thermal Energy

2

Outline

1.About our Company

2.Basic Technology

3.The KCC System

4.CO2 Capture Performance Test

5.CO2 Capture Energy

6.Feasibility Study of the KCC Application

7.Conclusions

3

1． About our Company

Motorcycle& Motorcycle& EnginesEngines

AerospaceAerospace

RollingRolling StockStock

Gas Turbine &MachineryGas Turbine &MachineryPlant & InfrastructurePlant & Infrastructure

10

Ship & Ship & Offshore StructureOffshore Structure

9 16

2012FYNet Sales

7

19%20

10

OthersOthers

Precision MachineryPrecision Machinery

10

Motorcycle& Motorcycle& EnginesEngines

AerospaceAerospace

RollingRolling StockStock

Gas Turbine &MachineryGas Turbine &MachineryPlant & InfrastructurePlant & Infrastructure

10

Ship & Ship & Offshore StructureOffshore Structure

9 16

2012FYNet Sales

7

19%20

10

OthersOthers

Precision MachineryPrecision Machinery

10

4

2．Basic Technology

CO2 Concentration ：1000 - 5000 ppm

KCC

Original adsorbent enables selective CO2 adsorption

Technology developed for a closed/semi-closed space

Gases CO2

CO2

CO2

CO2

CO2

CO2

CO2

CO2

CO2

CO2

CO2 free Gas

Original Adsorbent (An amine-coated porous material)

Aircraft cabin Office air-conditioning

Submarine Life Support

Kawasaki CO2 Capture

5

3．The KCC System

CO2 desorption at low temperature (e.g., 60 oC)

Applicable use of low-temperature waste heat

CO2

Desorption

Alternately

Steam Adsorption

Flue Gas

(60 oC, 20 kPa) Fixed-bed adsorbent (Our Original)

CO2 CO2

CO2 Free Gas

Alternately adsorb and desorb CO2 by mode switching

6

Superior adsorption performance for CO2 concentration between 0.1% and 50% confirmed by lab testing.

Adapted to Wide Range of CO2 Concentration

Application of KCC to Post-Combustion gases

KCC System

Gas Engine

Living Space

Thermal Power Plant

Cement Plant

Chemical Plant 0.1%

5% 13%

20%

50%

CO2

Our target

Our target

7

4．CO2 Capture Performance Test Photo of the 10 t CO2/day bench-scale test plant

6.5 m (W)×7.5 m (L)×12 m (H)

Adsorption tower

8

System Chart of the Bench-Scale Test Plant

Coal-fired flue gas

Gas heater

Condenser

Stack

Adsorption tower

Water Boiler

Steam generator

CO2

Vacuum pump

Fan CO2 free gas

：Coal-fired flue gas ：Steam for CO2 recovery ：CO2 free gas ：Captured CO2

Bag filter

Steam

9

Test Conditions and Measurement Parameters

Case1 Case2 Case3

Flue gas flow rate Nm3/h 960 1700 2000

Concentration of CO2 in the flue gas % 12 13 16

Flue gas temperature oC 40 40 40

Steam temperature oC 60 60 60

＜Test Conditions＞

Fin Nm3/h Flue gas flow rate

Tgin oC Flue gas flow temperature

Cin % Concentration of CO2 in the flue gas

Fout Nm3/h Flow rate of CO2-free gas

Cout % Concentration of CO2 in CO2-free gas

Tvin oC Steam temperature

TS1-TS4 oC

Adsorbent temperature (4 points[A, B, C, and D]on the same plane)

＜Main measurement Items＞ Adsorption tower

Flue gas Fin, Tgin, Cin

Fout, Cout

TS1

TS2

TS3

TS4

CO2 free gas

Adsorbent

TS1A TS1B

TS1C TS1D

90 degrees

CO2

Steam

10

0

0.2

0.4

0.6

0.8

1

0 5 10 15 20Adsorpt ion t ime [min]

Ratio

of C

O2

conc

entr

atio

nCo

ut/C

in

Case1Case2Case3

CO2 Adsorption Properties

Close to saturation

Desorption Process

100% adsorption of CO2

<Breakthrough curves, ratio of CO2 concentration>

The KCC adsorbent captures CO2 in the flue gas

20

30

40

50

60

70

0 4 8 12Adsorpt ion t ime [min]

Adso

rben

t te

mpe

ratu

re（m

ean

valu

e） [

℃]

Case2 TS1Case2 TS2Case2 TS3Case2 TS4

20

30

40

50

60

70

0 4 8 12Adsorpt ion t ime [min]

Adso

rben

t te

mpe

ratu

re（m

ean

valu

e） [

℃]

Case2 TS2ACase2 TS2BCase2 TS2CCase2 TS2D

Adsorption Temperature <TS1–TS4, mean value>

<TS2A–TS2D>

TS2A TS2B

TS2C TS2D

90 degrees

Adsorption tower

Flue gas Fin, Tgin, Cin

Fout, Cout

TS1

TS2

TS3

TS4

CO2 free gas

Adsorbent

CO2

Steam

11

12

0

2

4

6

0 5 10 15Capacity of CO2 Capture ［t/ d］

Ther

mal

Ene

rgy

requ

ired

for

CO2

Capt

ure

［GJ/

t-CO

2］

Thermal Energy Required for CO2 Capture

<Thermal Energy required for CO2 Capture with capacity of CO2 Capture>

Amine solution systems (MEA)

Nearly half

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<KCC Moving-Bed System> <Bench plant>

Target：2016 The Beginning of Commercialization

KCC Moving Bed System

CO2 Free Gas

Steam

CO2

Conveyor

Gas for Adsorption Reactor

Desorption Reactor

Adsorbent Dryer

Drying

5 t-CO2/d

Adsorption Reactor

Desorption Reactor

14

CO2

Capture Plants

Thermal Energy Electric Power

Flue Gas

CO2

CO2 Capture Energy

+

Confirmed by Bench-Plant Test

Feasibility Study CO2 Capture Energy (1) Cement Plant (2) Gas Engine

5．CO2 Capture Energy

(Steam, etc.) (Pump or Fan, etc.)

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Clinker Cooler Kiln

Boiler

Exhaust steam

Exhaust gas

Turbine

Clinker：6500 t/d

CO2

CO2：60 t/h

KCC Moving-

Bed System

Electric Power 1.6 GJ/t-CO2

(Primary Energy)

Thermal energy ＋ Electric Power ＝ 1.6 GJ/t-CO2

Waste Heat：Exhaust steam

<The CO2 Capture Energy>

MEA Extraction steam

5．Feasibility Study of KCC Application (1) Cement Plant

60oC

16

Fuel Gas

Green Gas Engine

Electric Power

Steam

CO2

Exhaust Gas

Waste Heat

KCC Moving-

Bed System

<Trigeneration System>

・Beverage ・Welding gas ・Dry ice etc.

7800 kW

3.5 t/h

The CO2 Capture Energy：1.3 GJ/t-CO2

3.2 t/h

(2) Gas Engine

Cooling Water (under 100 oC)

CO2 as a commercial product

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7．Conclusion • Our original adsorbents capture CO2 from

post-combustion gas.

• The adsorbent regenerates using 60 oC steam.

• The thermal energy required for CO2 capture by the KCC system is nearly half compared with amine solution systems using MEA.

• From the feasibility study, we find that the CO2 capture energy is 1.6 GJ/t-CO2 for cement plant and 1.3 GJ/t-CO2 for gas engine.

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Thank you for your attention.