Indicators for oxygen content in boiler feedwater!
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I would like to ask fellow sailors what the oxygen content level in boiler feedwater is, and what the unit of measurement is What adverse effects can high oxygen levels have on the operation of a boiler? Thank you!
The oxygen content in boiler feedwater is generally controlled to be ≤15µg/L; excessive oxygen content in boiler feedwater can cause oxygen corrosion in the pipelines, reducing their service life.
According to the current latest standard GB1576-2008 (which can be found on this forum), there are specific requirements regarding the dissolved oxygen level depending on the rated pressure of the boiler and the type of feed water (softened water or deionized water). These requirements vary, and since the information you provided is insufficient, it is not possible to determine the relevant values. The unit for dissolved oxygen is generally mg/L, as dissolved oxygen can cause corrosion in the boiler’s steam and water systems.
Generally less than 0.03 mg/L
We are using less than 0.015 mg/l
The oxygen content requirements for feedwater in high-pressure boilers and low-pressure boilers are different: it is 0.015 mg/L for low-pressure boilers and 0.007 mg/L for high-pressure boilers. For specific details, refer to GB/T1576 and GB/T12145. Additionally, a high oxygen content can cause oxygen corrosion in the equipment, leading to its damage after a short period of time
The oxygen content in the boiler feed water supplied to steam turbines should be less than or equal to 0.050 mg/L
Different boiler pressure grades require different water quality standards; high oxygen levels can cause oxygen corrosion and damage to the equipment