Device and method for pre-treating raw oil for production of biodiesel

Abstract

The invention provides a device and method for pre-treating raw oil for the production of biodiesel. The device comprises a treatment tank, wherein an oil inlet and a material return opening are formed in the top of the treatment tank, a heating coil is arranged in the treatment tank, the other material return opening is formed in the side wall of the treatment tank, an oil outlet is formed in the lower part of the side wall of the treatment tank and is connected with a circulating pump, the circulating pump conveys materials discharged from the oil outlet from the two material return openings to the treatment tank and is used for achieving the uniform mixing of materials in the treatment tank, and a conveyance pipe is provided with with an oil outlet pipe in a branched manner and can be used for discharging refined oil products; a slag outlet is formed in the bottom of the treatment tank and is communicated with an oil separator, an overflow opening is formed in the side wall of one side of the oil separator, grease above the oil separator is pumped by an oil pump and returns the treatment tank, and sewage overflowing from the oil separator is conveyed to a sewage treatment device. According to the device and the method for pre-treating the raw oil for the production of the biodiesel, in a manner of sedimentation cleaning after circular heating, impurities and water in the raw oil are cleaned to the maximum extent, the troubles in the subsequent cleaning treatment are reduced, and the quality of the refined oil product is ensured.

Description

technical field [0001] The invention relates to the technical field of biodiesel preparation, in particular to a raw material oil pretreatment device for biodiesel production and a processing method thereof. Background technique [0002] Biodiesel is a fatty acid monoalkyl ester obtained by transesterification of animal and vegetable oils with methanol or ethanol. Compared with traditional petrochemical energy, it has low sulfur and aromatic content, high flash point, high cetane number, and good Its lubricity can be partially added to fossil diesel, and it is an environmentally friendly renewable energy source. [0003] At present, in the production process of biodiesel, the raw material oil usually used is food residue or waste oil purchased from restaurants. Due to the messy and diverse sources of these animal and vegetable oils, the oil composition is complex and there are many impurities. If they are directly used in the production of biodiesel, the quality of the fini...

AI Technical Summary

Problems solved by technology

Due to the messy and diverse sources of these animal and vegetable oils, the oil composition is complex and there are many impurities. If they are directly used in the production of biodiesel, the quality of the finished diesel will be poor and the qualified rate of the finished product will be low.

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