Device for demulsification and dehydration of waste lubricating oil

The utility model relates to the technical field of comprehensive utilization of waste lubricating oil, in particular to a device for demulsification and dehydration of waste lubricating oil. Comprising a waste lubricating oil storage tank, a reaction kettle and a demulsified and dehydrated oil product storage tank, the bottom of the reaction kettle is connected with a circulating pump through a circulating pipeline, and the circulating pump is connected with the top of the reaction kettle through a circulating pipeline; a spraying pipe is arranged in the reaction kettle, and a nozzle is arranged at the bottom end of the spraying pipe and provided with spraying holes; the nozzle is positioned below a liquid level line in the reaction kettle; the injection pipe is communicated with a circulating pipeline, and a liquid phase discharging pipeline is arranged on the circulating pipeline between the circulating pump and the top of the reaction kettle. According to the utility model, the jet circulation loop is ado