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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 nakagawa@cse.oka-pu.ac.jp
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
Journal of Japan Society of Energy and Resources, Vol. 32, No. 4
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
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η 30 70
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η 7 35
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37.437.437.437.4
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3 5)
( )
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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
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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
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η 30 70
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η 7 35
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3 5)
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▲▲▲▲40.540.540.540.5
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2000 2040(10 )
,
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69.5
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5166
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▲▲▲▲40.540.540.540.5
10
▲▲▲▲▲▲▲▲30.530.530.530.530.530.530.530.5
2000 2040(10 )
,
2
Journal of Japan Society of Energy and Resources, Vol. 32, No. 4
4
40 50
5
5
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(
)
5
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5
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10
⇒ ⇒
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η
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⇒( )
⇒ ⇒
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≧49η≧70
45454545
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17
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≧49η≧70
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( )
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-
60.5
-
6
≧4910
24
3
Journal of Japan Society of Energy and Resources, Vol. 32, No. 4
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
Journal of Japan Society of Energy and Resources, Vol. 32, No. 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
OUTPUTOUTPUTOUTPUTOUTPUT
7
③
CAL,CGL
INPUTINPUTINPUTINPUT
③
OUTPUTOUTPUTOUTPUTOUTPUT
③CO2
OUTPUTOUTPUTOUTPUTOUTPUT
③
CAL,CGL
INPUTINPUTINPUTINPUT
③
OUTPUTOUTPUTOUTPUTOUTPUT
③CO2
OUTPUTOUTPUTOUTPUTOUTPUT
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 ( )
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100 75.0
▲1
▲3.1
56.3
59.4
▲490
( t/ )
(kg/t-pig)
1,000
490
(t-CO2/ )
▲25.0
5
Journal of Japan Society of Energy and Resources, Vol. 32, No. 4
(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
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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
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
(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=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
Journal of Japan Society of Energy and Resources, Vol. 32, No. 4
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
Journal of Japan Society of Energy and Resources, Vol. 32, No. 4
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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