METI / ECCJ / ACE Training Program MTPEC01 (2005.07)

Examples of Energy Conservation Technologies for Each Step

High investment

Step 1
Enhancement of management,
Improvement of operation

Step 2
Additional installation or
improvement of
equipment

Step 3
Change in process,
Use of high-efficiency
equipment

Rationalization of
fuel combustion

Improvement of air ratio
(stabilization of load
factors by means of
selection of burners,
cleaning of burners,
furnace pressure
control, prevention of
air entry, etc.)

Combustion control through exhaust gas analysis
Installation of combustion control devices
Adjustment of gas calorie

Low NOx burners
Fluidized bed combustion
Fuel change

Rationalization of
heating/cooling and
heat transfer

Optimization of seam pressure
Cleaning the heating surface
Improvement of heat patterns
Improvement of methods of charging materials to be heated

Extension of the preheating zone of industrial furnaces, Reduction of heat capacity
Improvement of control accuracy
Additional installation of heat exchangers, Use of multiple effect
Increasing the stages for the distillation tower, Changing filling materials

Omission of processes,
Utilization of sensible
heat in the preceding
process (hot strip
charge),
Re-compression of steam,
Improvement of catalyst
(PP, exhaust gas treatment),
Use of film, Changing the constituents (low-temperature paints, materials that do not require heat treatment),
Heating by infrared rays,
Changing materials (use of recycled paper and water sediment), and jet heating

Prevention of heat
loss through
radiation/heat transfer

Optimization of the volume of boiler blow water
Reducing the radiation surface area and standby time
Prevention of steam leaking portions, etc.
Reinforcement of heat insulation, Reduction of opening areas

Continuous blow equipment
Selection of steam traps
Removal of unnecessary piping
Spraying rock wool

Reducing time by use of
larger current for electric
furnaces

Recovery and reuse
of waste energy

Prevention of waste
energy leaks

Closed recovery of condensate
Anti-corrosive heat exchangers
Heat pipe, Heat pumps

Power generation through recovery of low to medium temperature waste heat, Power generation through recovery of waste pressure, Recovery of waste heat from solids (slag, coke, and sintered ores)
Energy supply to parties outside the factory (regional heating/cooling)

Rationalization of
conversion of heat
into motive power, etc.

Optimization of extraction, Back steam pressure
Improvement of boiler turbine load distribution
Variable pressure operation

Higher efficiency of turbine blades and nozzles
Rationalization of steam ejectors
Recovery of motive power from vacuum steam

Higher temperatures/pressure of steam
Combined heat and power supply (co-generation, fuel cells)
Combined cycle power generation, Improvement of engine efficiency

Voluntary Action Plan by KEIDANREN
(Keidanren: Japan Federation of Economic Organizations)

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