A waste oil recovery device and method

Abstract

The invention provides a waste oil recovery device. The device comprises a water oil recovery pipe with a U-shaped structure, wherein the waste oil recovery pipe comprises an oil inlet pipe at the left side of the waste oil recovery pipe and a water inlet pipe at the right side of the waste oil recovery pipe; the inlet end of the oil inlet pipe is connected with a waste water inlet pipe for inputting waste water and a viscose oil inlet pipe for inputting high-viscosity oil; the inlet end of the water inlet pipe is connected with a filtered water inlet pipe for inputting filtered water; the oil inlet pipe is sequentially provided with a wastewater layer, a high-viscosity oil layer and a filtered water layer from the inlet end of the oil inlet pipe; the waste water layer and the high-viscosity oil layer are contacted in a waste oil separation layer; and the oil inlet pipe is provided with a first oil-water detector used for checking the oil-water proportion of the waste oil separation layer and an oil outlet pipe which is used for draining separated waste oil when the oil-water proportion of the oil-water proportion of the waste oil separation layer achieves the preset requirement. The waste oil recovery device provided by the invention is capable of improving the efficiency of waste oil recovery and reducing the cost of waste oil recovery. The invention further provides a method for recovering waste oil by virtue of the waste oil recovery device.

Description

technical field [0001] The invention relates to the technical field of waste oil recovery, more specifically, to a waste oil recovery device and method. Background technique [0002] In the process of industrial production, petroleum or synthetic oil is used in many places. Some large enterprises consume hundreds of tons or even thousands of tons of petroleum or synthetic oil every year. In particular, in the steel rolling production line of metallurgical enterprises, the consumption Hydraulic oil and thin oil amounted to one million tons, of which dozens of tons were recovered as waste oil, and more than 90% of the remaining waste oil entered the rolling steel descaling water in the trench due to accidents such as leakage. [0003] Compared with the inflow of waste oil, the amount of waste water in the ditch is large, and the waste oil enters the ditch and mixes with the waste water to form waste water containing a small amount of waste oil. If degradation drugs are used to...

AI Technical Summary

Problems solved by technology

[0003] Compared with the inflow of waste oil, the amount of waste water in the ditch is large, and the waste oil enters the ditch and mixes with the waste water to form waste water containing a small amount of waste oil. If degradation drugs are used to degrade the waste oil in the waste water, the drug cost will be wasted , but also generate impurities such as oil sludge, which is not conducive to subsequent cleaning, and the maintenance cost is too high

If the existing oil-water separation device is used to extract waste oil from waste oil in waste water with low oil content, due to the huge amount of waste water containing waste oil and the complex structure of the existing oil-water separation device, the extraction efficiency of waste oil is extremely low. And the maintenance cost is extremely high, so it is not suitable for extracting waste oil from low oil content wastewater

Images