What is the maximum allowable oxygen content in steam? Is there a method to determine the oxygen content in steam?

The oxygen content in the steam must be minimized, as oxygen reacts with metals such as iron and copper at high temperatures to form oxides, which accelerates equipment corrosion. The standards specify that the dissolved oxygen in boiler feed water should be minimized, with levels to be kept below 0.01 mg/L. The oxygen content in steam can be determined through testing or specialized detection instruments. For example, a dissolved oxygen analyzer can be used to continuously monitor the oxygen content in steam online, thereby allowing for timely detection and control of that content. .

What kind of steam is this of yours?

The steam produced by boilers has a controlled level of trace oxygen, depending on its intended use. For the steam used in thermoelectric power units, including that used in supercritical and ultra-supercritical units, the oxygen content must be kept within a specific concentration range; it cannot exceed this limit, but it also shouldn’t be completely absent. Exact guidelines for controlling this oxygen concentration are provided in the process documentation and operating instructions. In such applications, physical or chemical deoxygenation is generally carried out during the boiler feedwater stage. For the steam used as a heat source in some factories, the control of oxygen is actually more lenient. The high-pressure steam used in thermoelectric generators is typically kept at a level of 5–10 ug/L of water; it is measured using online electrochemical analyzers, and special sampling and cooling methods are required to condense the steam into water before measurement can take place.