journal of japan society of energy and resources,...

Journal of Japan Society of Energy and Resources, Vol. 32, No. 4

High efficiency energy recuperation through the use of gas separation

Tsuguhiko Nakagawa

2010 9 29 2011 6 23

1990 CO2 2020

▲25 2050 ▲80

Cool Earth-

CO2

( )

No.1

1)

34 2)

1

This paper presents a new energy recuperation concept through the use of gas separation In a conventional way, steelworks

by-product gases that have been generated from coke oven, blast furnace, and converter have been used directly for fuel. Blast

furnace gas that has generated over 50 amount of by-product gases, which is loaded with CO2 and N2 gases. So, we propose

that CO2 and N2 gases should be separated from blast furnace gas. This heat value will increase the original heat value of blast

furnace gas This blast furnace gas will increase the efficiency of the newest Gas Turbine Combined Cycle(GTCC) power plants

by 5 and reduce the CO2 emission by ▲25 at a conventional steelworks with 10 million ton-steel/year yield.

Key Words: Energy reuse, Steelworks by-product gas, Gas separation, Efficiency, Power plants, GTCC

719-1197

e-mail [email protected]

17.517.517.517.5

13.5

31

63

10

59

6

10

16

100 1975 1975 1975 1975 1975 1975 1975 1975 エネルギー消費量

( )

93939393

3737373737373737

28282828

5

33

19

48

7

13

133434343434343434

1998 1998 1998 1998 1998 1998 1998 1998 100

81818181

,

エネルギー消費量

66

,

17.517.517.517.5

13.5

31

63

10

59

6

10

16

100 1975 1975 1975 1975 1975 1975 1975 1975 エネルギー消費量

( )

93939393

3737373737373737

28282828

5

33

19

48

7

13

133434343434343434

1998 1998 1998 1998 1998 1998 1998 1998 100

81818181

,

エネルギー消費量

66

,

1


1975 1998

CO2

CO23) GDP

2050 CO2

GDP 1.3

4)

1.3

GDP CO2

▲50

①

(

) ②

③

10

2 2 CO2 ▲50

81→40.5 ▲40.5

10

▲30.5

34→49( 34 69.5×100)

2 CO2 50

49

CO2 ▲50

34→49

3

36

6)

( )

①

②

7) ③

25

4

( )

100.0100.0100.0100.0

25252525 34343434 22222222 33333333

η 39.5

η 60 90

η 94.6

η 97.0

η 70 95

η 60 85

15151515 29292929

η 60 80

15151515 27272727

11111111 25252525

η 30 70

3333 13131313

η 7 35

39.539.539.539.5

37.437.437.437.4

36.236.236.236.2

3 5)

( )

100.0100.0100.0100.0

25252525 34343434 22222222 33333333

η 39.5

η 60 90

η 94.6

η 97.0

η 70 95

η 60 85

15151515 29292929

η 60 80

15151515 27272727

11111111 25252525

η 30 70

3333 13131313

η 7 35

39.539.539.539.5

37.437.437.437.4

36.236.236.236.2

( )

100.0100.0100.0100.0

25252525 34343434 22222222 33333333

η 39.5

η 60 90

η 94.6

η 97.0

η 70 95

η 60 85

15151515 29292929

η 60 80

15151515 27272727

11111111 25252525

η 30 70

3333 13131313

η 7 35

39.539.539.539.5

37.437.437.437.4

36.236.236.236.2

3 5)

34343434

100

81818181

,

69.5

40.540.540.540.5

5166

49494949

▲▲▲▲40.540.540.540.5

10

▲▲▲▲▲▲▲▲30.530.530.530.530.530.530.530.5

2000 2040(10 )

,

34343434

100

81818181

,

69.5

40.540.540.540.5

5166

49494949

▲▲▲▲40.540.540.540.5

10

▲▲▲▲▲▲▲▲30.530.530.530.530.530.530.530.5

2000 2040(10 )

,

2


4

40 50

5

5

5 3

(

)

5

4

5

45 34

10

⇒ ⇒

27.5 34 ▲6.5

27.5

49

92 95

80 70

H

Ⅱ( )Ⅰ( )

(((( 40404040 50505050 ))))

( )

C B LD

4

H

Ⅱ( )Ⅰ( )

(((( 40404040 50505050 ))))

( )

C B LD

H

Ⅱ( )Ⅰ( )

(((( 40404040 50505050 ))))

( )

C B LD

4

39.527272727.5.5.5.5

η

4

44

7

⇒( )

⇒ ⇒

100

17

13

≧49η≧70

45454545

( )

35

-

60.5

-

6

≧4910

24

39.527272727.5.5.5.5

η

4

44

7

⇒( )

⇒ ⇒

100

17

13

≧49η≧70

45454545

( )

35

-

60.5

-

6

≧4910

24

3


10

49

5

14

( 6 44×100)

CO2

LHV 19.3 MJ/Nm3

( C ) LHV 3.3 MJ/Nm3

( B ) LHV 8.4 MJ/Nm3

( LD ) B

50 LHV

C

B H2 3

CO 23 CO2 22 N2 52

74 ( CO2 N2)

①B CO2

B CO2

COURSE50 8)

9)

B

②B N2

B N2

N2

N210)

PSA

6 O2 20.9

35 N2

O2 35 11)

③N2 CO2

40 50

B ULCOS

CO2 N2 B

GTCC

(Gas Turbine Combined Cycle)

12)

④ N2

O2

O2 N2 N2

CDQ (Coke Dry Quenching Process)

⑤

1,000 t/

CO2 650 t-CO2/ O2

35 O2 9 Nm3/

20 25 30 35 40 45 50

80

60

40

20

55 60

O2

N2

O2

6 O2 O2 N2

20 25 30 35 40 45 50

80

60

40

20

55 60

O2

N2

O2

20 25 30 35 40 45 50

80

60

40

20

55 60

O2

N2

O2

6 O2 O2 N2

4


B CO2

N2 CO2

13)

CO2

30

O2

PSA 14)

0.35kWh/O2-Nm3

⑥C

C C

15) C ( C

) LHV 11 MJ/Nm3

B

B LNG

B CO2 N2

B C

B

① ⑥

CO2

CO2

① ⑥ 1,000 t/

7

CO2

24h CO2

( ) 8 (a) ① ⑥

8 (b)

, 1

1

1 CO2

CO2 ▲25

③

CAL,CGL

INPUTINPUTINPUTINPUT

③

OUTPUTOUTPUTOUTPUTOUTPUT

③CO2


7

③

CAL,CGL


③


③CO2


③

CAL,CGL


③


③CO2


7

( kJ/ )

① ( kWh/ )

217

57.6

54.6

3.0

( ) ( kJ/ )

② ( kWh/ )

① ② ( kWh/ )

3.3

CO21,970

216

54.5

110.9

56.4

) CO2 24h(0.815kg-CO2/kWh)

100 ( )

1,480

100 75.0

▲1

▲3.1

56.3

59.4

▲490

( t/ )

(kg/t-pig)

1,000

490

(t-CO2/ )

▲25.0

( kJ/ )

① ( kWh/ )

217

57.6

54.6

3.0

( ) ( kJ/ )

② ( kWh/ )

① ② ( kWh/ )

3.3

CO21,970

216

54.5

110.9

56.4

) CO2 24h(0.815kg-CO2/kWh)

100 ( )

1,480

100 75.0

▲1

▲3.1

56.3

59.4

▲490

( t/ )

(kg/t-pig)

1,000

490

(t-CO2/ )

▲25.0

5


(O(O(O(O(O(O(O(O22222222=35=35=35=35=35=35=35=35 ))))))))

0.35 kWh/Nm3-O2

( )O2

ηηηη====53535353TR

N2CDQ

COCOCOCOCOCOCOCO22222222

C

NNNNNNNN22222222

TRT

CCCCCCCC

GTCCGTCCGTCCGTCCGTCCGTCCGTCCGTCC

564564564564564564564564kWh/t-s

545545545545545545545545kWh/t-s

6,870 MJ/t-s

330 MJ/t-s4,680MJ/t-s

1,140MJ/t-s

1,090MJ/t-s

5,290 MJ/t-s

1,200 MJ/t-s

(b)

8

(O(O(O(O(O(O(O(O22222222=35=35=35=35=35=35=35=35 ))))))))

0.35 kWh/Nm3-O2

( )O2

ηηηη====53535353TR

N2CDQ


C

NNNNNNNN22222222

TRT

CCCCCCCC


564564564564564564564564kWh/t-s

545545545545545545545545kWh/t-s

6,870 MJ/t-s

330 MJ/t-s4,680MJ/t-s

1,140MJ/t-s

1,090MJ/t-s

5,290 MJ/t-s

1,200 MJ/t-s

(O(O(O(O(O(O(O(O22222222=35=35=35=35=35=35=35=35 ))))))))

0.35 kWh/Nm3-O2

( )O2

ηηηη====53535353TR

N2CDQ


C

NNNNNNNN22222222

TRT

CCCCCCCC


564564564564564564564564kWh/t-s

545545545545545545545545kWh/t-s

6,870 MJ/t-s

330 MJ/t-s4,680MJ/t-s

1,140MJ/t-s

1,090MJ/t-s

5,290 MJ/t-s

1,200 MJ/t-s

(b)

8

(O(O(O(O(O(O(O(O22222222=24=24=24=24=24=24=24=24 ))))))))

( )O2

ηηηη====37373737TR

N2CDQ

C

TRT

0.50 kWh/Nm3-O2

3030303030303030kWh/t-s

4,390 MJ/t-s

330 MJ/t-s

5,240 MJ/t-s

576576576576576576576576kWh/t-s

3,630MJ/t-s

1,440MJ/t-s

1,930MJ/t-s

1,440 MJ/t-s

(a)

(O(O(O(O(O(O(O(O22222222=24=24=24=24=24=24=24=24 ))))))))

( )O2

ηηηη====37373737TR

N2CDQ

C

TRT

0.50 kWh/Nm3-O2

3030303030303030kWh/t-s

4,390 MJ/t-s

330 MJ/t-s

5,240 MJ/t-s

576576576576576576576576kWh/t-s

3,630MJ/t-s

1,440MJ/t-s

1,930MJ/t-s

1,440 MJ/t-s

(O(O(O(O(O(O(O(O22222222=24=24=24=24=24=24=24=24 ))))))))

( )O2

ηηηη====37373737TR

N2CDQ

C

TRT

0.50 kWh/Nm3-O2

3030303030303030kWh/t-s

4,390 MJ/t-s

330 MJ/t-s

5,240 MJ/t-s

576576576576576576576576kWh/t-s

3,630MJ/t-s

1,440MJ/t-s

1,930MJ/t-s

1,440 MJ/t-s

(a)

6


8(a)

30kWh/t-s

① ⑥

8(b) 564kWh/t-s

GTCC B CO2

B N2 52→38 ▲14

GTCC 49→54 5

12) ( )

10

8(b)

① ⑥

49

1,000 t/

① ⑥

56 kWh/ 3 kWh/

( 9,000 t/ )

530 kWh/ ( (56+3)×9,000/1,000)

▲4,400 t-CO2/ CO2

5

1,050kWh/ kW 40 /kW

50 kWh/ 1.9

① ⑥

O2 3.5 O2 Nm3/h×5 (400 ) CO2

100 CO2 t/h×5 (750 1250 )

GTCC 240MW×5 (1,800 )

3,000 4,000

1/5

CO2

CO2

CO2

COURSE50

CO2 ▲25

CO2

( )

①

45

10

CO2 ▲50

49

②

CO2

(

)

③ CO2

7


CO2

(

9,000 t/ ) 530 kWh/

▲4,400 t-CO2/ CO2

1/5

1)SMART (2004)

2) 185 (2001)

3) Vol.29(7),

595 (1990)

4)Goldman Sachs Economic Research Global Economics Paper

No.173, (2008)

5) Ⅰ

111, (2009)

6)

2 216

222 (2010)

7) , , , ,

(DME) ,

, vol.28(1), 56 60 (2007)

8) CO2

COURSE50 42

, 339 340 (2010)

9)

CO2

74 , E306 (2009)

10)

, 18

, 352 353 (2009)

11)

75 , O113 (2010)

12)

GTCC , 2010

(3), 13 14 (2010)

13) Erfina Oktariani

42 , 344 (2010)

14)

PSA (Ⅱ) 59

66 2005

15) 13 15

(2004)

8

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