A method for identifying waste lubricating oil

A technology for waste lubricating oil and fuel oil, applied in the measurement of color/spectral characteristics, etc., can solve the problems of complex equipment, slow detection speed, and whether there is waste lubricating oil in difficult fuel oil, and achieve the effect of simple equipment and strong identification ability.

Inactive Publication Date: 2019-01-29
INSPECTION & QUARANTINE TECH CENT SHANDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because waste lubricating oil and fuel oil have similar properties, it is difficult to identify whether there is waste lubricating oil in fuel oil only by senses. Although large-scale instruments can be used to obtain accurate identification conclusions, the detection speed is slow and complex equipment is required.

Method used

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  • A method for identifying waste lubricating oil
  • A method for identifying waste lubricating oil

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Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: the preparation of chromatographic fluid

[0014] Chromatographic solution: n-heptane, toluene and ethanol, the ratio of which is n-heptane: toluene: ethanol = 75:15:10.

Embodiment 2

[0016] The verification test was carried out with 1 kind of waste lubricating oil, 3 kinds of fuel oil mixed with waste lubricating oil, and 4 kinds of fuel oil samples. Use the following methods to process the samples and judge the results:

[0017] After mixing the oil products evenly, dip a small amount of sample with a scribe pen, take a clean and dry chromatographic paper strip about 120mm in length, and carefully draw a uniform line on the chromatographic paper strip with a scribe pen containing the sample. The straight line is parallel to the bottom edge of the chromatographic paper strip and is about 10mm away from the bottom edge of the chromatographic paper strip (attached figure 1 ). After scribing and standing for 30 seconds, place the bottom edge of the chromatographic paper strip vertically and gently in the chromatographic dish filled with chromatographic solution about 5mm deep. The lower part of the chromatographic strip must not touch the wall of the dish. ...

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Abstract

The invention aims at providing a method for identifying spent lubrication oil. The method comprises the step of identifying whether an oil product is spent lubrication oil or not by use of a paper chromatography method or identifying whether fuel oil is mixed with the spent lubricating oil. A chromatographic solution comprises the ingredients of n-heptane, methylbenzene and ethyl alcohol at a volume ratio of 75:15:10. The invention further provides a method for detecting whether a sample contains the spent lubricating oil or not. According to the method, the paper chromatography method is adopted for identification, the chromatographic solution is used for enabling the to-be-detected sample to diffuse on chromatography paper, and whether the sample contains the spent lubricating oil is judged according to the diffusion result of a developing substance. The method has the advantages that needed equipment is simple, field test can be performed in the open air, the capability for recognizing fuel oil doped with the spent lubricating oil is high, and the method can be used for manufacturing a detection toolkit.

Description

technical field [0001] The invention belongs to the technical field of fuel oil detection, and in particular relates to a method for identifying waste lubricating oil, that is, a method capable of identifying whether it is waste lubricating oil or whether fuel oil is mixed with waste lubricating oil. Background technique [0002] Waste lubricating oil is a waste formed after lubricating oil can no longer be used. It has great environmental hazards, and direct use as fuel will damage the burner. Therefore, it is not suitable to be used as fuel oil or added to fuel oil without treatment. . But the price of waste lubricating oil is much lower than that of normal fuel oil, so unscrupulous traders will add waste lubricating oil to normal fuel oil and sell it in the name of normal fuel oil. In recent years, there have been many incidents of importing waste lubricating oil into my country in the name of fuel oil. [0003] Because waste lubricating oil and fuel oil have similar pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/29
CPCG01N21/29
Inventor 邓可刘黎
Owner INSPECTION & QUARANTINE TECH CENT SHANDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
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