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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 |
* Control of air ratio, selection of suitable burner type for furnace and fuel species. 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, Regenerative 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, sintered ores , and coke— Coke Dry Quenching)
* 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 |
| Rational use of electricity |
* Switch-off or cutting down excess lighting, funs, elevators etc.
* Optimization of operating numbers of funs, pumps and compressors according to road
* Balancing among roads to each pumps |
* Valuable fluid mass control system (Inverter control system)
* Fluorescence lighting
* Power factor improving facilities (phase-sifting condenser, reactor) |
* High efficiency motor, transformer
* Electricity recovery system of elevator, crane
* High efficiency fluorescence lighting (inverter control type) |
