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A kind of regeneration method of waste lubricating oil adsorbent

A technology for waste lubricating oil and adsorbent, which is applied in separation methods, filter regeneration, chemical instruments and methods, etc., to achieve the effect of simple method, simple operation and management, and good regeneration effect.

Active Publication Date: 2018-08-10
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem of saturated adsorption of the existing amino-functionalized silicon oxide-based waste lubricating oil adsorption material in the waste lubricating oil adsorption process, and to provide a method for regenerating the waste lubricating oil adsorbent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 200ml of the mixed solution containing saturated adsorbed waste lubricating oil adsorbent and adsorbed waste lubricating oil in a beaker, heat to 50°C in a constant temperature water bath, separate the obtained regenerated oil from the adsorbent by filtering, and then use The waste lubricating oil adsorbent that is cut off on the surface of the filter paper washed with petroleum ether; then the cleaned adsorbent is transferred to a 250ml round-bottomed three-necked flask placed in a constant temperature oil bath, and the mass composition is added to be 50% ethanol, 45% deionized water, Sodium hydroxide 4.5%, silica sol 0.5% regeneration solution, so that the adsorbent is completely submerged in the regeneration solution, heated to 50°C and then magnetically stirred for 60 minutes, then the mixture of the adsorbent and the regeneration solution is suction filtered, and then rinsed with deionized water Adsorbent, dried for later use. The regenerated adsorbent is use...

Embodiment 2

[0028] Weigh 200ml of the mixed solution containing the saturated and adsorbed waste lubricating oil adsorbent and the adsorbed waste lubricating oil in a beaker, heat it to 50°C in a constant temperature water bath, separate the regenerated oil and the adsorbent by static precipitation, and then use petroleum Rinse the waste lubricating oil adsorbent in the lower part of the beaker with ether; then transfer the cleaned adsorbent to a 250ml round-bottomed three-neck flask placed in a constant temperature oil bath, add mass composition of ethanol 50%, deionized water 45%, sodium hydroxide 4.5%, silica sol 0.5% regeneration solution, so that the adsorbent is completely submerged in the regeneration solution, heated to 50°C and then magnetically stirred for 60 minutes, then the mixture of the adsorbent and the regeneration solution is filtered with suction, and then the adsorbent is rinsed with deionized water. Dry and set aside. The regenerated adsorbent was used to adsorb the r...

Embodiment 3

[0030] Weigh 200ml of the mixed solution containing the saturated adsorbed waste lubricating oil adsorbent and the adsorbed waste lubricating oil in a beaker, heat it to 50°C in a constant temperature water bath, and separate the obtained regenerated oil from the adsorbent by centrifugation, and then use Rinse the waste lubricating oil adsorbent in the lower part of the centrifuge tube with acetone; then transfer the cleaned adsorbent to a 250ml round-bottomed three-neck flask placed in a constant temperature oil bath, add mass composition of 50% ethanol, 45% deionized water, and Sodium 4%, silica sol 1% regeneration solution, so that the adsorbent is completely submerged in the regeneration solution, heated to 50 ° C, magnetically stirred for 60 minutes, and then the mixed solution of the adsorbent and the regeneration solution is filtered, and then the adsorbent is rinsed with deionized water , dry for later use. The regenerated adsorbent is used to adsorb refined waste lubr...

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PUM

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Abstract

The invention discloses a regeneration method of a spent lubrication oil adsorbent. The regeneration method comprises the following steps: firstly, separating a spent lubrication oil adsorbent subjected to saturation adsorption from spent lubrication oil; then cleaning the separated-out spent lubrication oil adsorbent by an organic solvent; throwing the cleaned spent lubrication oil absorbent into a regeneration solution; after processing for 30-120 min at 30-70 DEG C, separating the spent lubrication oil adsorbent from the regeneration solution; cleaning with deionized water; drying to obtain the regenerated spent lubrication oil absorbent. The regeneration method of the spent lubrication oil adsorbent is simple to operate, low in processing cost, high in regeneration efficiency and favorable in economical and environment-friendly benefit.

Description

technical field [0001] The invention relates to a method for regenerating a waste lubricating oil adsorbent, in particular to a method for regenerating a waste lubricating oil adsorbent in the process of removing acidic substances in waste lubricating oil with an amino-functionalized silicon oxide-based material, and belongs to the field of oil adsorption regeneration. Background technique [0002] Lubricating oil, commonly known as engine oil, is widely used in transmission parts of automobiles, ships, various industrial equipment and various machinery. During the use of lubricating oil, due to air oxidation, thermal decomposition and impurity pollution, it is easy to cause moisture to enter the oil, and at the same time produce impurities such as polar molecules, carbon black, asphalt, etc., the acid value increases, and the quality of the oil decreases. Therefore, after a period of use, it must be replaced. Since waste lubricating oil contains a large amount of lubricati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/34C10G25/12
Inventor 刘国清曾坚贤李友凤曾令玮阳纵阳松廷
Owner HUNAN UNIV OF SCI & TECH