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Acid and alkali free quick regeneration method for waste oil

A fast, acid-base technology, applied in the multi-stage series refining process treatment, lubricating composition, etc., can solve the problems of poor working environment for waste oil regeneration, long time for waste oil regeneration, and high labor intensity of workers, etc. No acid, alkali and sulfur dioxide odor, low cost and low labor intensity

Inactive Publication Date: 2009-12-09
豆远奎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, although the regeneration device and regeneration method of waste oil are basically feasible, there are still the following problems in the regeneration method of waste oil: first, when the waste oil is regenerated, most of them need to add acid and alkali; 48-170 hours; third, the cost of waste oil regeneration is relatively high, and it takes 400-600 yuan to regenerate a ton of refined oil; fourth, the refined oil regenerated from waste oil is mainly base oil, the oil quality is poor, and further processing is required; Fifth, the working environment for waste oil regeneration is poor, and the labor intensity of workers is high

Method used

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  • Acid and alkali free quick regeneration method for waste oil

Examples

Experimental program
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Effect test

Embodiment 1

[0031] refer to figure 1 , Figure 4 , an acid-base rapid regeneration method for waste oil, comprising the following steps:

[0032] a), flocculation step

[0033]Will waste oil be joined in the reaction kettle 7 from oil inlet 12, add the activated clay of 1.5% of oil weight and the cationic polyacrylamide of 0.5% of oil weight, stir for 25 minutes, stop stirring, stand and settle for 120 minutes, from The bottom of reactor 7 gets rid of oxidation residue and sediment;

[0034] b), decolorization step

[0035] The oil after the flocculation is in the reaction kettle 7, adds the active clay of oil weight 8%, stirs 20 minutes;

[0036] c), filtering step

[0037] The decolorized oil is sucked into the filter 8 by the gear pump 10 and filtered to obtain the regenerated refined oil.

[0038] During the regeneration process of waste oil, the waste oil flow line is: oil inlet 12—reaction kettle 7—gear pump 10—filter 8—oil outlet 9. As long as the waste fuel oil is liquid, t...

Embodiment 2

[0041] refer to figure 2 , image 3 , Figure 4 , an acid-base rapid regeneration method for waste oil, comprising the following steps:

[0042] In the cycle purification step, firstly, waste lubricating oil is added to the heater 1 from the oil inlet 12 and heated to 95±2°C; the heated waste oil is transferred to the coarse filter 6 for coarse filtration; The oil is transferred to the specific gravity separation device 13 for decompression separation, and the light oil and water in the head are extracted by the vacuum pump 4 to the sewage collection device 3 for condensation storage, and the oil after the specific gravity separation is stored in the reactor 7; When the amount of oil in the reactor 7 is close to 70% of the volume ratio of the reactor 7, the oil inlet 12 is closed, and then the oil outlet valve at the bottom of the reactor 7 is opened, and the oil in the reactor 7 is input into the heater 1 for circulation and purification. Cycle purification at least twice...

Embodiment 3

[0050] refer to figure 2 , image 3 , Figure 4 , an acid-base rapid regeneration method for waste oil, when the waste oil is a mixed oil of waste lubricating oil and waste fuel oil, it comprises the following steps:

[0051] Circulation purification step, first add the waste oil to the heater 1 and heat it to 30±2°C; transfer the heated waste oil to the coarse filter 6 for coarse filtration; then transfer the coarse filtered oil to the specific gravity separation device In 13, decompression separation is carried out, and the light oil and water in the head are pumped by the vacuum pump to the sewage collection device 3 for condensation storage, and the oil after the specific gravity separation is stored in the reactor 7; the amount of oil in the reactor 7 is close to the reaction When the volume ratio of the kettle 7 is 70%, close the oil inlet 12, then open the oil outlet valve at the bottom of the reactor 7, and input the oil in the reactor 7 into the heater 1, and perfo...

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Abstract

The invention discloses an acid and alkali free quick regeneration method for waste oil, which comprises the steps of: flocculation, namely adding the waste oil into a reaction kettle, adding activated clay which accounts for 0.5 to 2 percent of the weight of the oil and cationic-type polyacrylamide which accounts for 0.1 to 1 percent of the weight of the oil into the oil, stirring the mixture for 10 to 30 minutes, standing and precipitating the mixture for 60 to 180 minutes, and removing oxidation residue and a precipitate from the bottom of the reaction kettle; decolorization, namely addingthe activated clay which accounts for 3 to 12 percent of the weight of the oil into the flocculated oil in the reaction kettle, and stirring the mixture for 10 to 30 minutes; and filtration, namely pumping the decolorized oil into a filter for filtration to obtain regenerated product oil. The acid and alkali free quick regeneration method for the waste oil has the advantages that: 1, acid and alkali do not need to be added when the waste oil is regenerated; 2, the regeneration of the waste oil has short time and only needs 1 to 6 hours; 3, the regeneration of the waste oil has low cost, and one ton of the regenerated product oil only needs 180 to 250 yuan; 4, the regenerated oil has good quality; and 5, the regeneration of the waste oil has good working environment and low power consumption, and has promotion value.

Description

technical field [0001] The invention relates to a method for treating waste oil with a vacuum oil purifier, and more particularly to an acid-base-free rapid regeneration method for waste oil. Background technique [0002] The waste oil processed by the vacuum oil purifier is mainly divided into two categories: waste lubricating oil and waste fuel oil. Waste fuel oil mainly includes waste diesel oil, waste kerosene, and waste gasoline. Regeneration of waste oil refers to the process of further processing waste oil by physical and chemical methods to obtain reusable refined oil. Waste oils commonly contain sulfides, chlorides or phosphides and require treatment. Vacuum oil purifier is a very popular waste oil regeneration device. Vacuum oil purifier is also called oil purifier. Treatment, so that waste oil is purified equipment. JB / T 5285-2001 "Vacuum Oil Purifier" and TL / T521-93 "Guidelines for Use and Acceptance of Vacuum Oil Purifier" have made more detailed regulations ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00C10G53/02
Inventor 豆远奎
Owner 豆远奎
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