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Electrochemical regeneration treatment method for waste lubricating oil

A waste lubricating oil and treatment method technology, applied in the direction of lubricating compositions, etc., can solve the problems of large chroma, low utilization rate of waste lubricating raw materials, unfavorable production operations, etc.

Active Publication Date: 2016-04-20
TAIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both the traditional regeneration of waste lubricating oil and the method of hydrotreating waste lubricating oil have the following disadvantages: the loss of waste lubricating oil raw materials is 20% to 50%, and the utilization rate of waste lubricating raw materials is low; Poor, large chroma, can only be used as low-grade lubricating oil; polluting substances such as acid slag and sulfide are produced during the treatment process, which is cumbersome to deal with and high in cost; after hydrogenation treatment, the properties of the lubricating oil are improved, but the light stability and thermal stability Poor performance, the product is easy to change color and precipitate
The steps of the treatment method are complicated, and most of the treatment process needs to be carried out at a relatively high temperature. At the same time, the flocculant of the added flocculant is polydimethyldiallylammonium chloride, ethylene oxide, propylene, ethanolamine and ethyl alcohol. Diamine copolymer needs to be processed at a temperature of 80°C to 150°C, the processing process is complicated, and the added flocculant is not easy to remove
On the other hand, most of the existing conventional methods use physical methods for flocculation, sedimentation and separation, which is not only complicated, but also requires a large amount of solvent, which is not conducive to actual production operations.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Select corresponding waste lubricating oil, through adopting conventional method to measure, the content of phosphorus in the waste lubricating oil is 4000ppm, then, directly waste lubricating oil and tetrahydrofuran methanol are added in the reactor in proportion, and reactor adopts conventional setting to get final product, reaction Preferably, the reactor can be separated into three regions by using a mesoporous membrane, so that graphite electrodes are placed in the regions on both sides of the reactor, which is conducive to more effective separation of the aggregates gathered on the electrodes, and the amount of tetrahydrofuran methanol solvent added is a waste 5.0% of the volume of the lubricating oil, then, the applied voltage is electrochemically treated to make the impurity particles gather around the electrode to form flocs, wherein, the voltage value of the applied voltage is 50V, and after the electrochemical treatment is completed, keep the energized state an...

Embodiment 2

[0020] Select corresponding waste lubricating oil, through adopting conventional method to measure, the content of phosphorus in the waste lubricating oil is 3500ppm, then, directly waste lubricating oil and tetrahydrofuran methanol are added in the reactor in proportion, and the reactor adopts conventional setting to get final product. A good reactor can be separated into three regions by using a mesoporous membrane, so that graphite electrodes can be placed in the regions on both sides of the reactor, which is conducive to more effective separation of aggregates gathered on the electrodes, so that the amount of tetrahydrofuran methanol solvent added is 10% of the volume of the waste lubricating oil, and then, the applied voltage is electrochemically treated to make the impurity particles gather around the electrode to form flocs, wherein the voltage value of the applied voltage is 80V, and after the electrochemical treatment is completed, keep the energized state, The liquid ...

Embodiment 3

[0022]Select corresponding waste lubricating oil, through adopting conventional method to measure, the content of phosphorus in the waste lubricating oil is 3800ppm, then, directly waste lubricating oil and tetrahydrofuran methanol are added in the reactor in proportion, and reactor adopts conventional setting to get final product, reaction Preferably, the reactor can be separated into three regions by using a mesoporous membrane, so that graphite electrodes can be placed in the regions on both sides of the reactor respectively, which is conducive to more effective separation of aggregates gathered on the electrodes, so that the addition of tetrahydrofuran methanol solvent is 4.0% of the volume of the waste lubricating oil, then, the applied voltage is electrochemically treated to make the impurity particles gather around the electrode to form flocs, wherein the voltage value of the applied voltage is 100V, and after the electrochemical treatment is finished, keep the energized ...

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PUM

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Abstract

The invention relates to an electrochemical regeneration treatment method for waste lubricating oil and belongs to the technical field of waste oil regeneration. The invention aims at providing an electrochemical regeneration treatment method for waste lubricating oil with simple technology, high quality, excellent performance and high yield. The electrochemical regeneration treatment method for the waste lubricating oil comprises the following steps: adding the waste lubricating oil and tetrahydrofurfuryl carbinol into a reactor, externally applying voltage for carrying out electrochemical treatment, so that impurity particles are clustered at the periphery of an electrode and form floccules, and then directly separating out a liquid oil phase; and carrying out phase separation on the obtained liquid oil phase, and then carrying out after treatment, so that the regenerated lubricating oil is obtained. The electrochemical regeneration treatment method for the waste lubricating oil has the advantages that particulate matters in the waste lubricating oil can be well clustered and enlarged, so that a separating effect is realized; and total metal content can be controlled to be less than 180ppm, total ash removal rate can be controlled to be more than 90%, and phosphorus removal rate can be controlled to be more than 95%.

Description

technical field [0001] The invention relates to an electrochemical regeneration treatment method for waste lubricating oil, belonging to the technical field of waste oil regeneration. Background technique [0002] In the field of petrochemical industry, with the rapid development of domestic and foreign economic technology, the application and demand for lubricating oil products are also increasing; A lot of resources are wasted. [0003] At present, the relatively mature waste lubricating oil regeneration methods in China mainly adopt traditional physical methods such as distillation, solvent washing and clay refining, while the technology of using hydrogenation to treat waste lubricating oil is still in the research stage, and the process is not very ideal. . However, both the traditional regeneration of waste lubricating oil and the method of hydrotreating waste lubricating oil have the following disadvantages: the loss of waste lubricating oil raw materials is 20% to 5...

Claims

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Application Information

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IPC IPC(8): C10M175/00
CPCC10M175/00C10M175/0016
Inventor 李嵘嵘韩得满贾文平李呈宏陈浩
Owner TAIZHOU UNIV
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