Oil-water automatic separation method and apparatus

Abstract

The invention relates to an oil-water automatic separation method and apparatus. The separation method comprises: adding an oil-water mixture, performing natural sedimentation and layering, detectingthe water content in real time, sending the water content to a controller, discharging the lower water layer of the oil-water mixture after natural layering, stopping discharging, controlling the oil-water mixture to undergo separation via a centrifugal process, stopping the centrifugal process, and separating oil from water. The apparatus includes a sedimentation tank and a cyclone. The sedimentation tank is internally provided with a water content detector; the lower part of the sedimentation tank is connected to a liquid discharging pipe, which is connected to a water discharging pipe via afirst solenoid valve, and which is connected to the cyclone via a liquid pumping pipe; the liquid pumping pipe is internally provided with a water pump and a second solenoid valve; and an overflow port formed at the top of the cyclone is connected to the sedimentation tank via an oil discharging pipe, and a bottom flowing port formed at the bottom of cyclone is connected to the water dischargingpipe via a water outlet pipe. The method and apparatus are relatively high in oil-water mixture separation degree, can be automatically controlled, are simple to operate and saved in labor, and have good economy.

Description

technical field [0001] The invention relates to an oil-water separation technology in the field of chemical production, in particular to an automatic oil-water separation method and device. Background technique [0002] In industrial production and processing, oily wastewater is often produced. If the oily wastewater is discharged directly, it will cause great harm to the natural environment. Therefore, oil-water separation is an indispensable industrial process, and oil-water separation is also required in some special industries. Like the oil industry. In order to discharge the water in the oil-water mixture, researchers have conducted research from various aspects such as oil-water separation methods and oil-water interface detection. Among them, the process of oil-water separation is mostly operated manually, and the manual judgment of the oil-water interface is not accurate enough, oil leakage accidents are prone to occur, the demand for manpower is also large, and the...

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Problems solved by technology

Among them, the process of oil-water separation is mostly operated manually, and the manual judgment of the oil-water interface is not accurate enough, oil leakage accidents are prone to occur, the demand for manpower is also large, and there is also the problem of low separation degree. Equipment, the effect of oil-water separation is relatively general

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