METHOD AND MEANS FOR ADDING DEMULSIFYING AGENTS TO A PROCESS TANK

摘要

The invention relates to a method for the controlled addition of demulsifying agents (EB) to a process tank, in particular, to a separation tank (1), filled with oil and water. According to said method, an emulsion layer (E) is detected, using a sensor (2) with vertical local resolution and a sensor signal is transmitted to a feed control (3). A metered amount of demulsifying agent to be added is then supplied by said feed control (3), in conjunction with the sensor signal. This enables a minimal dosage of demulsifying agents (EB). In particular, capacitive level sensors, or gamma-ray density-profile sensors are suitable for use as sensors.