Method for regenerating base oil by waste oil

A technology for waste oil regeneration and base oil, which is applied in the petroleum industry, hydrocarbon oil treatment, and multi-stage serial refining process treatment, etc. Protection, adjustable quality standards, the effect of reducing production costs

Inactive Publication Date: 2017-06-13
山东铂铠环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The yield of regenerated oil is generally below 80%, and the quality of regenerated oil is not high, so it can only be used as low-grade oil
The problem of acid slag produced by this process has not been completely solved so far, forming secondary pollution of waste acid slag, waste clay, and waste water
[0003] Regeneration of waste oil needs to go through two processes of pretreatment and refining. In the existing technology, when the base oil is separated by ordinary distillation, the amount of residue is large, resulting in waste of resources
The existing waste oil regeneration process includes the following types: 1. Flocculation-sedimentation-dehydration and deslagging method. This process uses simple physical methods for treatment, and only for some high-quality oil products. The waste oil is first settled to separate water After being mixed with other heavy components, it is directly pic

Method used

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  • Method for regenerating base oil by waste oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The method for regenerating base oil from waste oil comprises the following steps:

[0031] 1. Raw material pretreatment part:

[0032] (1) Initial distillation:

[0033] The raw material of waste lubricating oil is heated to 180°C by a heat exchanger and then enters the initial distillation tower, and the pressure is reduced to -0.080MPa. The water in the raw material and 75# base oil are removed from the top of the tower, and the rest enters the vacuum tower for vacuum distillation cutting.

[0034] (2) vacuum distillation cutting:

[0035] Heat the bottom oil of the initial distillation tower to 350°C and send it to the vacuum distillation tower, and cut the raw oil sequentially under the condition of -0.095MPa:

[0036] The 75# base oil is fractionally distilled from the top of the tower, condensed by the condenser, enters the liquid separation tank at the top of the tower, and then pumped into the tank area or directly into the solvent refining system;

[0037]...

Embodiment 2

[0057] The method for regenerating base oil from waste oil comprises the following steps:

[0058] 1. Raw material pretreatment part:

[0059] (1) Initial distillation:

[0060] The raw material of waste lubricating oil is heated to 220°C by a heat exchanger and then enters the initial distillation tower, and the pressure is reduced to -0.080MPa. The water in the raw material and 75# base oil are removed from the top of the tower, and the remaining part enters the vacuum tower for vacuum distillation cutting.

[0061] (2) vacuum distillation cutting:

[0062] Heat the bottom oil of the initial distillation tower to 380°C and send it to the vacuum distillation tower, and cut the raw oil in sequence under the condition of -0.098MPa:

[0063] The 75# base oil is fractionally distilled from the top of the tower, condensed by the condenser, enters the liquid separation tank at the top of the tower, and then pumped into the tank area or directly into the solvent refining system; ...

Embodiment 3

[0084] The method for regenerating base oil from waste oil comprises the following steps:

[0085] 1. Raw material pretreatment part:

[0086] (1) Initial distillation:

[0087] The raw material of waste lubricating oil is heated to 200°C by a heat exchanger and then enters the initial distillation tower, and the pressure is reduced to -0.080MPa. The water in the raw material and 75# base oil are removed from the top of the tower, and the rest enters the vacuum tower for vacuum distillation cutting.

[0088] (2) vacuum distillation cutting:

[0089] Heat the bottom oil of the initial distillation tower to 360°C and send it to the vacuum distillation tower, and cut the raw oil in sequence under the condition of -0.096MPa:

[0090] The 75# base oil is fractionally distilled from the top of the tower, condensed by the condenser, enters the liquid separation tank at the top of the tower, and then pumped into the tank area or directly into the solvent refining system;

[0091] ...

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Abstract

The invention discloses a method for regenerating base oil by waste oil, belonging to the technical field of waste oil regeneration. The problems that the waste oil regeneration rate is low, the oil quality of regenerated oil is poor, the environment is polluted and the like in the prior art are solved. The method for regenerating the base oil by the waste oil comprises a raw material pretreating part and a solvent refining part; wherein the raw material pretreating part comprises three phases of prefractionation, reduced pressure distillation cutting and molecular distillation; the solvent refining part comprises the steps of extraction, refined solution recovery, extracted solution recovery and solvent recovery; the molecular distillation refers to the process that tower bottom oil of a reduced pressure distillation tower is fed into a short-path distiller, and separating fuel oil and residues through two-stage molecular distillation under the condition that the pressure is 0.001 to 100Pa. The method provided by the invention is suitable for regenerating the base oil by the waste oil.

Description

technical field [0001] The invention relates to a method for regenerating base oil from waste oil, which belongs to the technical field of waste oil regeneration. Background technique [0002] The waste oil regeneration process is a technical problem that various countries are actively exploring and developing. The distillation-acid washing-clay refining process used at the beginning is a traditional and ancient process route. The process is relatively simple and the equipment cost is relatively low. Low, it can be applied to any type of waste oil. The amount of sulfuric acid added varies from oil to oil, generally below 10%. The amount of clay varies depending on the quality of the oil and the quality required for regenerated oil, and is generally below 10%. The yield of regenerated oil is generally below 80%, and the quality of regenerated oil is not high, so it can only be used as low-grade oil. The problem of acid slag produced by this process has not been completely so...

Claims

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Application Information

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IPC IPC(8): C10G53/00C10G53/04C10M175/00C10M175/02
CPCC10G53/00C10G53/04C10G2300/1007C10M175/0033C10M175/005C10M175/0083C10M175/02
Inventor 李卫东孙尚峰张广军
Owner 山东铂铠环保科技有限公司
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