Tubular furnace and waste lubricating oil recovery device formed thereby

Abstract

The invention discloses a tubular furnace and a waste lubricating oil recovery device. The tubular furnace comprises a furnace body which comprises a furnace head, a furnace body, a furnace tail, heating pipes and an exhaust device, wherein the heating pipes are transversely arranged in the furnace body in parallel and are connected with a control valve. The waste lubricating oil recovery device comprises the tubular furnace, wherein waste lubricating oil enters into the tubular furnace to be heated, and the heated oil enters into a distillation kettle to be divided into two parts, wherein one part of distilled oil enters into an oil storage tank and is acid-washed and alkali-washed, subjected to impurity removal by a white clay tank and filtered by a plate and frame filter to obtain light fuel oil. The other part is deslagged through a slag oil tank to obtain heavy fuel oil. The heating pipes of the tubular furnace are transversely arranged and the tubular furnace is connected with the distillation kettle through an oil pump. An overflow tank is connected to the distillation kettle. The heating pipes of the tubular furnace are transversely arranged, so that the furnace is not easy to coke. Compared with conventional single kettle production and vertical tubular furnace production, the fuel oil recovery device has the characteristics of anti-coking performance, large handling capacity and high oil yield.

Description

technical field [0001] The invention belongs to the field of recycling waste lubricating oil, in particular to a device for recycling waste lubricating oil. Background technique [0002] Taking waste lubricating oil as an example, there are about 200 million cars in operation in my country at present, and each car changes the oil twice a year, each time for 3 liters, and the amount of waste oil replaced every year is 200 million vehicles × 2 × 3 liters =1.2 billion liters. If these waste materials are recycled, a lot of cost can be saved every year, and environmental pollution can be reduced. Many factories recycle these materials and process them into refined oil for reuse through waste lubricating oil recovery equipment. [0003] A tube furnace is needed in the process of treatment. However, the existing tube furnace is a vertical tube furnace, and its heating tubes are distributed vertically. The tube length is about several hundred meters. During the heating process, it...

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Problems solved by technology

[0003] A tube furnace is needed in the process of treatment. However, the existing tube furnace is a vertical tube furnace, and its heating tubes are distributed vertically. The tube length is about several hundred meters. During the heating process, it is easy to cause heating. Tube blockage; In addition, waste engine oil generally contains metal shavings, viscous agents, etc., and it is easy to cause blockage of the heating tube when it passes through a long vertical heating tube during the recycling process.

In addition, in the traditional single-pot production, only one reactor is used to distill waste lubricating oil, the oil yield is low, and coking occurs

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