What should be paid attention to during low load operation of boilers
What should be paid attention to during low load operation of boilers
The boiler adopts a unique center reignition two return design, with the combustion chamber arranged at a low position in the center and the design concept of symmetrical distribution of heat exchange smoke tubes on both sides. The heat transfer load is uniform and stable, which is conducive to the steam water circulation on the working fluid side and improves the safety of the boiler. The reasonable application of waveform furnace and enhanced heat transfer element threaded smoke tube not only enhances the turbulent heat transfer of high-temperature flue gas but also effectively absorbs the thermal expansion and contraction of the furnace body.
1) The furnace temperature decreases and the combustion stability decreases, which increases the possibility of fire extinguishing and explosion;
2) Weakening of soda water circulation and reduced reliability of water circulation;
3) The water level in the steam drum fluctuates greatly, making it difficult to achieve automatic water filling;
4) Difficulty in ensuring the quality of steam;
5) Low exhaust temperature can easily cause low-temperature corrosion and ash accumulation on the rear heating surface.