Control of the temperature at the bottom of the distillation tower
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Recently, our plant was in the process of commissioning a new unit, which caused unstable demand for steam from the utility systems. This led to significant fluctuations in the main pipe pressure, directly affecting the temperature at the bottom of the refining tower in our workshop. Such fluctuations often resulted in flooding of the tower, severely impacting product quality. Thanks to the efforts of the instrument operators and workshop staff, this problem was finally resolved. 1. Cascade control is applied to the bottom temperature of the tower. 2. The steam volume is compensated for using instrument pressure. :)
Our company’s distillation columns use cascade control based on the vapor volume at the column bottom and the pressure at that location; it depends on what type of column it is