| |
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
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