This document discusses pinch technology for energy conservation activities. It explains that pinch technology can visualize heat flow qualitatively and quantitatively through composite curves. Pinch technology has the potential to conserve over 500-1000 million liters of crude oil per year. Moreover, pinch technology applied to co-production systems can further increase energy conservation effects by maximizing thermal and material cascade utilization between different production processes.

1. Pinch Technology forPinch Technology for
Energy Conservation ActivitiesEnergy Conservation Activities
１９．１．２００４
Shigeaki Tonomura
Energy Conservation Technology Development Department
NEDO Technology Development Organization
IEA INTERNATIONAL WORKSHOP
NEDO

2. 2．Programs､Strategic R&D on Energy Conservation
& Business-units subsidy system in NEDO
Fundamental Technology Projects
Practical Application Projects
Promoting Efficient Energy Utilization
in Industry/Housing/ Buildings
Businessstage
R&D steps
Programs ､Strategic R&D on Energy Conservation
& Business -units supporting system
Corroboration Projects
Programs
NEDO

3. TechnologyTechnology MapMap
Commercial Improvement of Heat Utilization Air Conditioning,
Heating,Hot-water supply system
/Domestic use Energy conservation of Structure
Energy Conservation of Lightning, other Electrical Equi
New Energy Management technology development
in Domestic Use
Energy Conservation of off-duty equipment
ex. Charger, power adopter
Commercial Energy Control of Lightning, Air Conditioning
/Business use Energy Conservation of main body
Energy conservation of Structure
Energy conservation for Information Technology
On Site Dispersed Power Supply ・Stｏrage of Electricity
Transportation improvement with Conventional Power System
use improvement with Advanced Power System
Introduction of Advanced Motor Fuel and Spread
Improvement of Distribution/ Transportation System
Industrial use Reduction of Fixed Energy of Industrial Rｅｇion
Improvement of Steam Utilization
Energy conservation of Motor, Power electronｉcｓ
Improvement of Heating, drying system
Energy conservation of Utilization Process of Cold
Temperature
Utilization of Heat NEDO

4. Potential of Pinch Technology
for Energy Conservation
５００
∼
１０００
Pinch Technology
Potential
Quantity of Energy
Conservation
（Mｌｉｔｅｒ・crude oil/year）
Ｉｔｅｍｓ
NEDO

5. Conventional Process(example）
Heater 2040KW
Cooler 1200KW
R1 R2H
H
30℃ １２０℃
１００℃
１８０℃
７２℃
1240KW
800KW
Ａ
８６℃
１８０℃８０℃
2000KW
C
condencer
reboiler
６０℃ ９０℃ ４０℃
７０℃
１３０℃
８０℃
12０0KW
Distillation Column
Ｂ
２４００KW
１３０℃
Ｐｒｏｄｕｃｔ２
Ｐｒｏｄｕｃｔ１
ｉｎ Temp ｏｕｔ Temp ΔＴ ＵｎｉｔVolume Ｈｅａｔ Ｕｎｉｔ
30 85.6 55.56 36 2000
180 80 -100 20 -2000
Ａ
ｉｎ Temp ｏｕｔ Temp ΔＴ ＵｎｉｔVolume Ｈｅａｔ Ｕｎｉｔ
60 90 30 80 2400
130 70 -60 40 -2400
Ｂ
ΔＴ＝５０℃ ΔＴ＝１０℃
NEDO

6. Improved Process(example)
Heater １２００KW
Cooler ３６０W
R1
R2
H
30℃ １２０℃
１００℃ １８０℃ ８０℃
1200KW
Ａ
Ｂ
４９℃
１２０℃
１３０℃
８５℃ ６０℃
3240KW
２0００KW
C
condencer
reboiler
７２℃ ６０℃
１３０℃
Ｐｒｏｄｕｃｔ１
Ｐｒｏｄｕｃｔ２
360KW
Distillation Column
４０℃４９℃
６０℃
ｉｎ Temp ｏｕｔ Temp ΔＴ Volume Ｈｅａｔ Ｕｎｉｔ
30 120 90 36 3240
130 49 -81 40 -3240
Ａ
ｉｎ Temp ｏｕｔ Temp ΔＴ Volume Ｈｅａｔ Ｕｎｉｔ
60 85 25 80 2000
180 80 -100 20 -2000
Ｂ
ΔＴ＝１９℃ ΔＴ＝２０℃
NEDO

7. Comparison of Processes
Conventional Process
0
20
40
60
80
100
0 20 40 60 80 100 120 140 160 180 200
Ｔｅｍｐｅｔａｔｕｒｅ
ｖｏｌｕｍｅ
heat serverＡ
heat ｓｅｒverＢ
heat recieverＡ
heat recieverＢ
Ｉｍｐｒｏｖｅｄ Process
0
20
40
60
80
100
0 20 40 60 80 100 120 140 160 180 200
Ｔｅｍｐｅｔａｔｕｒｅ
ｖｏｌｕｍｅ
heat serverＡ
heat ｓｅｒverＢ
heat recieverＡ
heat recieverＢ
Ｒｅｑｕｉｒｅｄ
４０℃
Ｒｅｑｕｉｒｅｄ
８０℃
Ｒｅｑｕｉｒｅｄ
４０℃
Ｒｅｑｕｉｒｅｄ
８０℃
ΔT=50℃
problem１
problem２
ΔT=１０℃
ΔT=１９℃
ΔT=２０℃
NEDO

8. Composite Curve （０）
CP＝ｆ（volume，specific heat）
Heat Flow
Temperature
IntensiveVariable2)
Extensive variable1）
＝Temperature＊CP
ΔＴ CPα
・α
＜ CPβ
・β
CPγ
・γ
1)Extensive variable:indicates quantitative degree／A+A=2A
2)Intensive Variable：indicates qualitative degree／A+A=A
The state of system can beThe state of system can be
visualized qualitativelyvisualized qualitatively andand
quantitatively at the same timequantitatively at the same time.
＜
Attention；Temperature is not directly the function
of Heat Flow. Figure shows solely the
relationship between Temperature and Heat Flow

9. Composing the Curves
H
T
180° -
130° -
80° -
40° -
CP
=
40
CP
=20
1
2
H
T
180° -
130° -
80° -
40° -
C
P
=
40
CP
=
20
1
2
CP = 60
only
only
1 2and
NEDO

10. Composite Curve（１）
NEDO
Ｃｏｎｖｅｎｔｉｏｎａｌ Ｐｒｏｃｅｓｓ
0
50
100
150
200
0 1000 2000 3000 4000 5000 6000 7000 8000
Heat Flow(kW)
Ｔｅｍｐｅｒａｔｕｒｅ
ｈｅａｔ ｒｅｃｉｅｖｅｉｎｇ ｃｕｒｖｅ
ｈｅａｔ ｓｕｐｐｌｙｉｎｇ ｃｕｒｖｅ
2040
1200
ｅｘｔｒａ ｃｏｏｌｉｎｇ
ｅｘｔｒａ ｈｅａｔｉｎｇ

11. Composite Curve（２）
NEDO
Ｉｍｐｒｏｖｅｄ Ｐｒｏｃｅｓｓ
0
50
100
150
200
0 1000 2000 3000 4000 5000 6000 7000 8000
Heat Flow(kW)
Ｔｅｍｐｅｒａｔｕｒｅ
ｈｅａｔ ｒｅｃｉｅｖｅｉｎｇ ｃｕｒｖｅ
ｈｅａｔ ｓｕｐｐｌｙｉｎｇ ｃｕｒｖｅ
1200
３６０
ｅｘｔｒａ ｈｅａｔｉｎｇ
ｅｘｔｒａ ｃｏｏｌｉｎｇ

12. Composite Curve（３）
NEDO
Comparison of Composite Curves
0
20
40
60
80
100
120
140
160
180
200
0 1000 2000 3000 4000 5000 6000 7000 8000
Heat Flow(kW)
Temperature（℃）
heat supplying heat receiving（ｃｏｎｖｅｎｔｉｏｎａｌ）
heat receiving（improved) heat receiving（ideal）
３６０ 1200
960
ΔＴmin
=10℃
2040
heating
１２００
１２０ ｃｏｏｌing

13. Pinch technology
for Co-production system
Pinch technology for
Thermal analysis
Pinch technology for
Material analysis
Heat recovery
Enthalpy
Temperature
Material reuse
Mass Volume
PurityofMaterial
Optimizing Analysis Method for
Heat and Material cascade utilization
Pinch technology
for Co-production system
Maximization of
material cascade
utilization
Maximization of
thermal cascade
utilization
NEDO

14. cost analysis of gasification process
0
20,000
40,000
60,000
80,000
100,000
conventional pinch,thermal
& material
seperately
co-pro pinch
cost($/day) energy & Material cost co-pro operation cost
Analysis Example of
Co-production System
NEDO
-
18%
-
26%

15. Example of Correlation Between
Steel Plant and Oil Refining Plant
NEDO
Coke oven gas refining unit
CO/H２ refining unit FT synthesizer
Crude steel
IroOre
Lime
stone Blast furnace Converter
Coal
Sintering Plant
Coke Oven
Naphtha for
petrochemistry
gasoline
kerosene
Gas oil
Heavy oil
FCC
Reformer
HDS Units of
Naphtha，
kerosene，
Gas oil
Hydrogen
Generation units
Petroleum
Distillation
Column
Atmospheric
Vacuum
Distillation
Column
HDS Units of
Units of VGO，
Residual oil
Asphalt
S 5wt%
Ni 60ppm
V 200ppm
Bypro-Hydrogen
Fluid catalytic cracking
Ｈｙｄｒｏｇｅｎ desulphurization

16. ConclusionConclusion
1.1.Pinch Technology visualizes waste heatPinch Technology visualizes waste heat
panoramicallypanoramically，，qualitatively and quantitativelyqualitatively and quantitatively．．
2.. Potential of Pinch technologyPotential of Pinch technology for Energy Conservationfor Energy Conservation
is notis not less than 500less than 500∼１０００∼１０００MM･･LiterLiter・・crude oil/yearcrude oil/year．．
3.3. Moreover Pinch technology for Co-productionMoreover Pinch technology for Co-production
system may enlarge the Energy Conservation effectsystem may enlarge the Energy Conservation effect．．
NEDO