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A device, method and application for removing free acid in ester synthetic oil

A technology of ester synthetic oil and free acid, applied in ion exchange treatment device, ion exchange, refined hydrocarbon oil and other directions, can solve the problems of environmental pollution of soap stock, low yield of acid removal process, etc., to reduce pollution and yield High, simple post-processing steps

Active Publication Date: 2016-02-10
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of device and method and application of removing free acid in ester synthetic oil, adopt resin to remove free acid in polyol ester synthetic oil, the process productivity of acid removal High and reduce environmental pollution, aiming to solve the problems of relatively low yield of the existing acid removal process and environmental pollution caused by soap materials

Method used

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  • A device, method and application for removing free acid in ester synthetic oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A kind of pentaerythritol polyol ester oil purchased from the market, the acid value of the oil product is 3mgKOH / g, the color is brownish yellow, and the chroma is 1.5 (test method GB / T6540). After mixing 1L of petroleum ether and 2L of ethanol, add 2L of oil product and mix it into oil product tank 5. Add 5L resin ① to resin tank 1. Open the third valve 12 and the fourth valve 9, the pump 2 and the flow meter 8, so that the diluted liquid of the oil enters the resin tank 1 and contacts with the resin ①, and the flow rate is controlled by the flow meter 8 and the pump 2 to be 0.6L / h. After a short initial period, a clear and transparent solution emerges from the resin tank. The chroma of the oil after removing the solvent is 0.5, the acid value of the oil is 0.01mgKOH / g, and the nitrogen content of the oil is 0.83mg / L (test method SH / T0657-2007). The final product can be used in internal combustion engine oil, compressor oil, bearing oil, high temperature chain oil a...

Embodiment 2

[0062] A trimethylolpropane polyol ester oil purchased from the market has an acid value of 1 mgKOH / g, a light yellow color, and a chroma of 1.0 (test method GB / T6540). After mixing 1L of ethyl acetate and 2L of ethanol, add 2L of oil and mix it into oil tank 5. Add 5L of resin ② into the resin tank 1. Open the third valve 12 and the fourth valve 9, the pump 2 and the flow meter 8, so that the diluted liquid of the oil enters the resin tank 1 and contacts with the resin ②, and the flow rate is controlled by the flow meter 8 and the pump 2 to 0.6L / h. Collect the product, the chroma of the oil product after removing the solvent is 0.5, the acid value of the oil product is 0.025mgKOH / g, and the nitrogen content of the oil product is 1mg / L (test method SH / T0657-2007). The products can be used in internal combustion engine oil, compressor oil, bearing oil, high temperature chain oil and other fields. The elution of free acid in the subsequent resin and the regeneration of the res...

Embodiment 3

[0064] A kind of pentaerythritol polyol ester oil purchased from the market, the acid value of the oil product is 2mgKOH / g, the color is light yellow, and the chromaticity is 1.0 (test method GB / T6540). Add 2L of oil to oil tank 5. Add 4L of resin into resin tank 1 ③. Open the third valve 12 and the fourth valve 9, the pump 2 and the flow meter 8, so that the oil slowly enters the resin tank 1 and contacts with the resin ③, and the flow rate is controlled by the flow meter 8 and the pump 2 to be 0.3L / h. Collect the product, the color of the collected oil is 0.5, the acid value of the oil is 0.015mgKOH / g, and the nitrogen content of the oil is 0.9mg / L (test method SH / T0657-2007). The products can be used in internal combustion engine oil, compressor oil, bearing oil, high temperature chain oil and other fields. The elution of free acid in the subsequent resin and the regeneration of the resin are the same as in Example 1.

[0065] Table 2, the performance index comparison of...

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Abstract

The invention discloses an apparatus and a method for removing free acids in ester synthetic oils and applications of the apparatus. The apparatus and a method for removing free acids in ester synthetic oils comprises sequentially connected a fluid-inlet system, a resin tank device and a fluid-outlet system via pipelines. The fluid-inlet system includes a pure water tank, a pretreatment fluid tank, an oil tank, a fluid pressurizing device and a flow control device. The resin tank device comprises a resin tank, a fifth valve for connecting the fluid-inlet system and the resin tank, and a sixth valve for connecting the fluid-outlet system and the resin tank. The resin tank contains resin used to remove the free acids in the ester synthetic oils. The fluid-outlet system comprises a product acid value monitoring point for detecting acid value of a product and a storage tank for storing the product. According to the apparatus provided by the present invention, the acid value can be effectively reduced, and the refining yield of an oil product can be maintained at a high level; at the same time, the resin can be used repeatedly, so the method of using resin to remove free acids in ester synthetic oils is obviously economical.

Description

technical field [0001] The invention relates to the technical field of refining process of ester synthetic oil, in particular to a device, method and application for removing free acid in ester synthetic oil. Background technique [0002] Ester synthetic oil is currently the most important type of synthetic oil, including diesters, mixed esters, double esters, polyol esters, and other types, among which polyol ester synthetic oil is a class of ester synthetic oils that has been developed so far. The latest product, which is a kind of biodegradable synthetic oil, is currently the most researched and applied bio-lubricant. The special structure without hydrogen atom on the β carbon atom endows the polyol ester synthetic oil with excellent thermo-oxidative stability, and also has good lubricity, low temperature resistance and other properties. At present, polyol ester synthetic oil is widely used in the lubrication of important mechanical parts such as aero-engines and compres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D15/08C11B3/10C11C1/08C10G25/00C10L1/02
Inventor 孙蓉张玲杨忠学杨瑞杰刘强赵涛
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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