Pressure measurements in distillation columns
Distillation columns use multiple sensors to measure pressure in different sections
Distillation separates mixtures of liquids by exploiting differences in the boiling points of the various components (distillates). It is used in a wide variety of industry segments including oil & gas, chemical, food & beverage and pharmaceutical. Pressure measurement is one of the most critical parameters for control of distillation processes. A distillation column typically has multiple sensors to measure pressure in various zones.
Tough environment
Most distillation columns run under vacuum conditions for greater efficiency and lower energy consumption. High temperature is required for some processes as well. Deformation of diaphragm seals and flanges may let atmospheric air enter the vacuum column. In these new processes, the filling of the fluid under deep vacuum conditions is still similar to standard procedures. However, the amount and type of fill fluid is now predetermined for each seal system.