Temperature adjustment of the steam generator
Thread Content
The steam generated by the steam generator is heated in the convection section of the furnace and then exits the device as superheated steam. Assuming the furnace load remains constant, to increase the temperature of the steam exiting the unit, is it better to increase the steam pressure or to reduce the steam output?
This post was last edited by dahei9971 on 2019-2-6 22:32. It is determined based on the plant’s steam balance, the design pressure of the steam drum, and its nominal design capacity. Of course, the higher the steam pressure, the greater the value of the steam produced; theoretically, the higher the quality of the steam, the greater its recovery value.
A reminder to the original poster: increasing the pressure does not necessarily raise the temperature of the outlet steam. As the pressure increases, the specific heat of the steam rises, while the load remains unchanged; as a result, the temperature rise in the convection section necessarily decreases, and the final outlet temperature does not increase much compared to before. Therefore, with a constant load, if both pressure and temperature are to be increased simultaneously, the output usually has to be reduced. If the poster only wants to increase the temperature, it is easier to reduce the output.
It depends on what you want. There is an economic consideration at play here: high steam pressure and excellent taste, but the temperature may not increase much. In that case, a steam compressor is needed. As for the option of reducing production, it involves deciding where to find the amount by which production needs to be reduced Should it be used reasonably or discarded directly? One option requires investment, while the other involves wasting some steam resources