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Load Adjustment of Waste Incineration Plant Units
Ensure that the amount of garbage incineration and evaporation reaches the rated value.
Maintain normal steam temperature and pressure.
Ensure that the furnace temperature is maintained above 850°C, and the oxygen content of the flue gas is controlled between 6% and 8%, with a residence time of no less than two seconds.
The water inlet should be kept balanced and the drum water level should be maintained within an appropriate range.
Ensure the quality of saturated steam and superheated steam.
To maintain good combustion, the slag thermal loss rate must be less than 3% to improve the overall efficiency of the boiler.
Ensure safe and economical operation of boiler units.
The flue gas purification system should be kept in normal operation to ensure that the emission indicators are within the compliance range.
Ways to Adjust Unit Load
1. Adjustment according to load instructions:
Using "power control", the DEH system can intelligently adjust the valve opening of the turbine to adapt to the set load requirements.
2. Adjustment according to pressure parameters:
After setting the main steam pressure value, the DEH control system will automatically adjust the opening degree of the turbine regulating valve to ensure that the required pressure is always maintained at a constant level.
3. DEH manual adjustment:
"Valve control" is used in the DEH control of the turbine. By increasing or decreasing the valve opening instructions, the turbine regulating valve opening is manually adjusted to meet the requirements of the unit operating conditions.
4. Isolated grid operation adjustment:
When the isolated grid control is put into operation, the unit will automatically enter the isolated grid operation mode. At this time, the unit will switch to speed control, that is, the DEH system will automatically adjust the opening of the turbine regulating valve to maintain the unit frequency at 50HZ. The operator adjusts the generator box Hertz to maintain the rated voltage, and switches the generator excitation to the "constant voltage" mode to keep the voltage stable.
