Supporting Information

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CO2 molality, mol/kg H2O. T=333.15K. Point: Goppert et al. Line: Model. NH3=3.837. NH3=2.186. NH3=0.966. NH3=0.721. (a). 0.0. 0.5. 1.0. 1.5. 2.0. 2.5. 3.0. 3.5.
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Supporting Information

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Process modeling of an advanced NH3 abatement and recycling technology in ammonia-based CO2 capture process

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Kangkang Lia,b, Hai Yub*, Moses Tadea, Paul Feronb, Jingwen Yuc, Shujuan Wangc a

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Department of Chemical Engineering, Curtin University of Technology Australia, GPO BOX U

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1987, Perth, WA 6845, Australia

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b

CSIRO Energy Centre, 10 Murray Dwyer Circuit, Mayfield West, NSW 2304, Australia

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c

Department of Thermal Engineering, Tsinghua University, Beijing 100084, PR China

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*

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Tel: +61-2-49606201

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Fax: +61-2-49606021

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Email address: [email protected]

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Summary of SI

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Number of pages: 3

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Number of tables: 2

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Number of figures: 3

Corresponding author:

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Table Captions Table SI-1 Typical flue gas composition from Munmorah Power station Source

Composition, vol/%

Flow-rate, Kg/hr

Temperature, °C

CO2

H2O

O2

N2

NH3

760

120

10.7

6.0

7.8

75.5

0

656

25.1

3.23

1.83

9.0

84.2

1.15

Flue gas from Munmorah Power Vent gas after CO2 absorber of CSIRO pilot test ID-32A 20

Table SI-2 The main parameters of different packing materials No.

Pack type

Vendor

Material

surface area (m2/m3)

void fraction

1 2 3 4

Pall ring-25mm Pall ring-16mm Wire-Pack-500Y CY

GENERIC GENERIC GENERIC SULZER

Metal Metal Metal Standard

205 341 500 708

0.94 0.93 0.95 0.965

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Figure Captions

(a)

Total pressure/kPa

1250

Line: Model Point: Goppert et al

8000

T=333.15K

1000

(b)

Line: Model Point: Goppert et al T=353.15K

7000

NH3=0.721 NH3=0.966

750

Total pressure/kPa

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NH3=2.186

500

NH3=3.837

250

NH3=0.591

6000

NH3=2.006

5000 4000 3000

NH3=4.14

NH3=1.087

2000 1000

0

0

0

1

2

3

0.0

4

0.5

25

(c)

Total pressure/kPa

NH3=4.78

800

2.5

3.0

3.5

4.0

NH3=6.54

600 400

T=353K Model, m(NH3)=6.3 Model, m(NH3)=6.0 Model, m(NH3)=6.8 Kurz et al m(NH3)=6.3 Kurz et al m(NH3)=6.0 Kurz et al m(NH3)=6.8

NH3=3.406

NH3=1.638

1000

2.0

(d) 500

1200 NH3=0.506NH =1.014 3

1.5

600

Line: Model Point: Goppert et al T=360.15K

Total Pressure/kPa

1400

1.0

CO2 molality, mol/kg H2O

CO2 molality, mol/kg H2O

400 300 200

T=333K

T=313K

100

200 0

0 0

26 27 28 29

1

2

3

4

5

0

CO2 molality, mol/kg H2O

1

2 3 4 CO2 molality, mol/kg H2O

5

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Figure SI-1 Total pressure of NH3-CO2-H2O mixture for various ammonia and CO2 molalities at different temperatures with model data (line) and experimental data (point) from GÖppert et al14and Kurz et al15 S2

CO2 flowrate, kg/hr

40

122

38

120

36

118

34

116

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Flue gas Flue gas to CO2 absorber Flue gas from CO2 absorber Vent gas

114

30

112

28 0

2

4

6

8

12

14

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Figure SI-2 The CO2 flow rate in different gas streams as a function of circulation times

140

(a)

120

40

100 Temperature, C

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(b)

Flue gas Exit gas from pretreatment Exit gas from CO2 absorber Vent gas

o

o

Temperature, C

50

35

NH3 lean stream NH3 rich stream

30 25 20

80 60 40 20

0

34

10

Circulation times

30 31 32

33

CO2 flowrate, kg/hr

124

2

4

6

8

10

12

14

16

0

2

4

6

8

10

12

14

16

Circulation time

Ciirculation time

Figure SI-3 Temperature profile of (a) liquid streams and (b) gas streams as a function of time

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