Condensation – An Important Process in Petrochemical Manufacturing
Condensation vessels can be found in many different stages of distillation and processing of oil products. With gaseous products such as propane, the still liquid fractions condense out and are fed back. With liquid distillates, the condenser separates out the still highly volatile, gaseous components. The layout of the condensation vessels places specific demands on the applied measurement technology. In condensate traps for gases, the liquid collects in a small vessel extension at the lower end of the condenser. The measuring ranges in that location are less than 3 ft (1 m). It’s a different story with the measuring ranges in gas traps: almost the entire vessel is filled with liquid and the measuring ranges nearly correspond to the total vessel height, which can be up to approximately 13 ft (4 m).
Level Measurement in Gas Traps with the VEGAFLEX 65
With its coaxial measuring system, the VEGAFLEX 65 is particularly well suited for implementation in condensate traps without the use of an additional reference vessel. Due to the applied concentric tube, the VEGAFLEX 65 is not affected by strong turbulence on the product surface. The sensor reliably measures the level of any of the different hydrocarbons, from high boiling point derivatives to liquid gases.
Level Detection with the VEGASWING 63
Because the possible overfilling of a condensation vessel represents a high safety risk, reliable detection of the maximum level is absolutely essential. Due to the fact that it has a wide temperature range and is completely independent of product characteristics, the VEGASWING 63 vibrating level switch is especially suitable for use in this area. Even process temperatures up to 482°F (250°C) cannot harm the sensor.
Level Measurement in Reference Vessels with the VEGAFLEX 66
The guided wave measuring principle lends itself particularly well to small measuring ranges up to 3 ft (1 m), which are usual in condensate traps for gases. The single rod VEGAFLEX 66 is the optimal solution for measurement in reference vessels. Together with the bypass tube, the sensor probe forms a coaxial system that can even be used in products with very low dielectric constant, such as liquid gases. Existing displacer systems can be replaced by the sensor without any structural alterations.