Regarding the materials for waste heat boilers and steam drums
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What material should be used for the high-pressure waste heat boiler in our plant (with carbon monoxide, carbon dioxide, and water vapor inside the tubes) and the steam drum (with a pressure of 10.1 MPa)? Should it be stainless steel?
It’s best to specify the temperature. There are many materials that can withstand a pressure of simply 100 kilograms. Consider carbonation corrosion. If the temperature is too high, high-temperature corrosion by CO2 must also be considered.
This is related to the operating temperature and the diameter of the container; if the diameter is large and the temperature is high, high-strength steel can be used.
The combination of CO + CO2 + H2O can cause stress corrosion in carbon steel. The temperature at which saturated steam has a pressure of 10 Mpa is around 315 degrees; therefore, a Q345R + 304 composite material should be used
The person on the 4th floor said it very well; if the equipment isn’t large, using 304 will also work fine