Interlock issues of the reboiler at the bottom of the tower
Thread Content
The high-pressure steam pressure of the reboiler at the bottom of the tower is used to interlock the temperature of the tower bottom, while in some cases it is used to interlock the overall pressure difference across the tower. Is there a difference?
Overheating the tower can lead to excessive pressure in the reactor as well as high tower temperatures. The effects of column pressure and column temperature on the product are not exactly the same; there are differences.
The principle is similar: when the tower pressure is high, the temperature also rises; and when the temperature is high, the tower pressure increases as well. It depends on your system – the particular component that is more sensitive. Some materials tend to react at high temperatures, which in turn affects the tower temperature. Pressure also influences the distillation process, and it has an impact on the composition of the tower contents; thus, this affects the tower pressure as well
In my opinion, the temperature interlock is related to the material; it is more critical for temperature control compared to the pressure interlock at the bottom of the tower, and it serves to protect the equipment and the process
The last edit to this post was made by chenzihuan on 2010-1-3 at 09:33; the temperatures displayed in our distillation towers are…