Help! Will the deaerator water temperature decrease, will it have any impact on Gaojia? Thanks!
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Recently, the factory wants to do an energy-saving project. It lowers the deaerator temperature from 104 degrees to 95 degrees, and adds a deaerator to ensure that the dissolved oxygen in the feed water is qualified. This can save the amount of steam used for deoxidation. I would like to ask the experts, after the temperature drops to 95 degrees, will there be any impact on the operation of the boiler? for example: If the inlet water temperature of Gaojia decreases, will it affect the operation? Is the steam production of the boiler affected? Thanks!
Thanks! If the high-pressure heater and economizer compensate the feed water temperature, can we only consider the flue gas temperature?
Lower the temperature and add an oxygen scavenger. This oxygen scavenger is probably hydrazine. It has no harm to the boiler itself, but it is hard to say for steam users. There is vacuum deoxygenation technology, which is more energy-saving than thermal deoxygenation and does not require the addition of various chemicals.
Caution is advised. It will have an impact on the boiler thermal efficiency. The deaerator itself uses low pressure steam. Consider passing the deaerator exhaust gas through a heat exchanger to recover heat
Vacuum deaeration requires equipment modification. I have consulted colleagues who use vacuum deaerators and they said that the deoxygenation effect is not very satisfactory and is very unstable.
If the lowered temperature can be compensated through a high-pressure heater or an economizer, it means that the boiler feed water temperature remains unchanged, and will it have no impact on the thermal efficiency? I am mainly worried about whether the operation of Gaojia equipment will be affected. After all, the inlet water temperature dropped by 10 degrees.
When the feed water temperature decreases, more high-pressure steam will be pumped to maintain the feed water temperature, which will reduce the efficiency of the turbine and therefore the efficiency of the power plant.