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Flocculated-adsorption regeneration treating method for waste engine oil

A treatment method and engine technology, applied in the field of lubricants, can solve the problems of harsh reaction conditions, high investment in regeneration equipment, expensive hydrogenation and large-scale treatment, and achieve simple regeneration methods, low investment in regeneration equipment, and reduced secondary pollution effect

Inactive Publication Date: 2010-07-07
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above waste lubricating oil regeneration treatment technologies require distillation or hydrogenation treatment, the reaction conditions for regeneration are relatively harsh, the investment in regeneration equipment is high, and the hydrogenation cost is relatively expensive, which is only suitable for large-scale treatment.

Method used

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  • Flocculated-adsorption regeneration treating method for waste engine oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Sedimentation filtration

[0025] Take 1kg of waste engine oil and put it into a container, settling in a constant temperature box at 65-75°C for 24 hours, take the upper layer of clear oil, and filter.

[0026] 2. Primary flocculation

[0027] In the supernatant clear oil after filtering in step 1, adding mass fraction is 25% sodium carbonate aqueous solution, and the addition amount of the sodium carbonate aqueous solution of 25% is the 2% of supernatant clear oil quality, is heated to 75 ℃, 1000 rev / min constant temperature Stir for 20 minutes, transfer to an incubator at 70-80°C to settle for 16 hours, cool down to room temperature naturally, and take a flocculation supernatant clear oil.

[0028] 3. Secondary flocculation

[0029] Adding a mass fraction of 25% polyamide resin-ethanol solution to the primary flocculation supernatant clear oil, the amount of the 25% polyamide resin-ethanol solution being 10% of the primary flocculation supernatant clear oil mass...

Embodiment 2

[0033] In the primary flocculation step 2 of the present embodiment, the mass fraction of 25% sodium carbonate aqueous solution is 1% of the supernatant clear oil quality, and the other steps of this step are the same as in Example 1. In the secondary flocculation step 3, the addition amount of the polyamide resin-ethanol solution with a mass fraction of 25% is 2.5% of the mass of the supernatant clear oil, and the other steps of this step are the same as in Example 1. In the adsorption decolorization step 4, the addition of the hydrogen peroxide decolorizer is 1% of the quality of the supernatant clear oil in the secondary flocculation, and the total addition of activated clay is 2% of the quality of the upper clear oil. Other steps of this step are the same as in Example 1 . Other steps are the same as in Example 1 to obtain regenerated lubricating oil.

Embodiment 3

[0035] In the primary flocculation step 2 of the present embodiment, the mass fraction of 25% sodium carbonate aqueous solution is 6% of the supernatant clear oil quality, and the other steps of this step are the same as in Example 1. In the secondary coagulation step 3, the polyamide resin-ethanol solution with a mass fraction of 25% is added in an amount of 15% of the supernatant clear oil mass, and other steps of this step are the same as in Example 1. In the adsorption decolorization step 4, the addition of hydrogen peroxide decolorizer is 5% of the quality of the clear oil in the upper layer of the secondary flocculation, and the total amount of activated clay is 14% of the quality of the clear oil in the upper layer. Other steps of this step are the same as in Example 1 . Other steps are the same as in Example 1 to obtain regenerated lubricating oil.

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Abstract

The invention relates to a flocculated-adsorption regeneration treating method for waste engine oil. The method comprises the following steps of settling filtration, primary flocculation, secondary flocculation, and adsorption bleaching. The impurities, hydrocarbons, carbon deposits, particles, cement gums and the like in the oil can be settled and separated through two flocculation processes, the bleaching property of hydrogen peroxide and the adsorption bleaching property of clay are combined, and then the color, stability and electric property of the oil can be obviously improved. The regeneration method has the advantages of simple process, convenient and safe operation, low investment of regeneration equipment, improvement on the original lubricating oil blending equipment, and suitability for small-scale treatment. The regenerated lubricating oil completely satisfies the applicable national standards. The residue slag generated in the flocculation process can be used as asphalt matching material for paving roads after reprocessing. The good economic benefit can be produced, and the secondary pollution is reduced.

Description

technical field [0001] The invention belongs to the technical field of processing used lubricants to recover useful products, and in particular relates to a waste engine oil flocculation adsorption regeneration treatment method. Background technique [0002] Lubricating oil is a high-priced product extracted from petroleum products. In general, if 1% of the hydrocarbons in the lubricating oil deteriorate, the oil cannot be used anymore. Due to people's lack of correct understanding of lubricating oil, the replaced waste oil is often used as fuel for direct burning or directly discarded, which not only wastes precious energy, but also pollutes the environment. In fact, the "waste oil" replaced during the normal oil change cycle is not waste, and only a few percent of it is really deteriorated. As long as the impurities and deteriorated components in the waste oil are removed, the regenerated oil can be used as the base oil or blending component of lubricating oil. Different...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00B01D21/01B01D15/08
Inventor 董元虎陈世江尹兴林曹泰峰王婷王稳
Owner CHANGAN UNIV
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