ECCJ / AOTS Malaysias training course

ECCJ / AOTS Malaysia training course

Malaysia

3.3 Boilers
3.3.1 Example of management standards for boilers (1)

Boilers as object
Schedule management for start and stop
Air ratio: 1.2 or less (O2 density in discharged gas: 3% or less) Set the ratio by load level if necessary.
Management of steam pressure, temperature Pressure: 17MPa±0.3MPa Boiler outlet steam temperature: 538?±10deg
Discharged gas temperature: 200? or less (target 160· or less)
Furnace wall temperature Ceiling: 125· or less Side wall: 110? or less, bottom135 or less
Criteria for the quality of water supplied Conduction rate: 350µS/cm or less PH: 7 - 9 Silica: 50mg/L or less Hardness: 2.0mgCaCO3 or less

Example of management standards for boilers (2)

7. Regarding big boilers, establish operation methods of water supply pumps, thrusting fans, etc. (Details are omitted)
8. Measurement, records
Forms include operation daily report, operation monthly report, operation yearly report.
Forms describe management values and frequency of recording for each item recorded.
9. Inspection, maintenance
Forms include daily inspection record, monthly inspection record, yearly inspection record. Forms describe management values (as necessary) and frequency of inspection and maintenance for each item recorded.

Energy Conservation Measures

3.4 Air conditioning equipment
3.4.1 Example of management standards for air conditioning equipment

3.5 Power distribution equipment
3.5.1 Energy conservation of power distribution equipment and related equipment

3.6 Electric power equipment
3.6.1 Example of management standards for boiler's water supply pumps

1. Start and stop of water supply pump and quantity control Turbine driving of 50% capacity and motor driving of 30% capacity are used.
(1) After low pressure systems are cleaned and starting conditions has become ready, start motor driven pumps.
(2) Start the first turbine driven pump when boiler's load is 25% or above. When boiler's load is 30% or above, stop the motor driven pump.
(3) Start the second turbine driven pump when boiler's load is 45% or above.
(4) Use one pump when boiler's load is 40% or below.
(5) After all burners are turned off, stop the pump according to operator's judgment.
(6) When using two pumps, operate them with same flow rate.
2. Operation of discharging pressure
(1) When there is rated load, adjust boiler's output in a way that makes turbine's inlet pressure 25MPa (±0.3MPa).
(2) When there is partial load, adjust boiler's output in a way that makes turbine's inlet pressure correspond the load. Management value is setting pressure±0.3MPa.
3. Management of motor voltage
Manage bus line voltage of distribution board, because it is normally difficult to measure terminal voltage of motors.
Management value: 6,300 - 6,600V

Parallel operation, drawing of quantity control (example of water supply pump)

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