Technological method for regenerative recycling treatment of waste mineral oil

A technology of waste mineral oil and renewable resources, applied in the direction of lubricating compositions, etc., can solve the problems affecting the continuous and stable operation of the system, the ceramic filter is easy to block, and cannot be fully utilized, so as to reduce the amount of residue generated and prevent leachate The precipitation and the effect of reducing the amount of waste residue

Active Publication Date: 2019-01-08
LUOYANG HAOHAI IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method adopts two-stage heating in the disposal process, and the loss of heat energy is large. The ceramic filter used is easy to block. At the same time, the heavy oil is returned to the raw material tank, resulting in the accumulation of thick oil at the bottom of the raw material tank, which cannot be fully utilized, and affects the continuous and stable operation of the system.

Method used

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  • Technological method for regenerative recycling treatment of waste mineral oil

Examples

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Effect test

Embodiment 1

[0025] A process method for recycling waste mineral oil, the steps are as follows:

[0026] Taking the waste oil and sludge produced by a refinery as an example, the basic composition of the waste oil is 5-8% moisture, 0.3-0.6% ash, 1.1-2% mechanical impurities, and a density of 0.89kg / cm 3 ; The oil sludge is the bottom sludge of the refinery tank, with an oil content of 20-30%, and the rest is water and mechanical impurities. The specific disposal process is as follows:

[0027] 1. Pump the waste lubricating oil in the raw material tank to the pretreatment tank, settle and dehydrate it, and set up a vacuum system on the top of the pretreatment tank. The vacuum degree is 50 kPa, and the temperature at the top of the tower is 75 ° C. Moisture;

[0028] 2. The pretreated raw materials are discharged from the middle and lower part, and then sent to the distillation tower through the pump and the double-tube filter in turn. The filtration accuracy of the double-tube filter is b...

Embodiment 2

[0034] A process method for recycling waste mineral oil, the steps are as follows:

[0035] Taking the waste oil and sludge produced by a refinery as an example, the basic composition of the waste oil is 5-8% moisture, 0.3-0.6% ash, 1.1-2% mechanical impurities, and a density of 0.89kg / cm 3 ; The oil sludge is the bottom sludge of the refinery tank, with an oil content of 20-30%, and the rest is water and mechanical impurities. The specific disposal process is as follows:

[0036] (1) Pump the waste lubricating oil in the raw material tank to the pretreatment tank, settle and dehydrate it, set up a vacuum system on the top of the pretreatment tank, the vacuum degree is 20 kPa, the temperature at the top of the tower is 60 ℃, and the low boiling matter is separated and moisture;

[0037] (2) The pretreated raw materials are discharged from the middle and lower parts, and then sent to the distillation tower through the pump and the double-cylinder filter in turn. The filtratio...

Embodiment 3

[0041] A process method for recycling waste mineral oil, the steps are as follows:

[0042] Taking the waste oil and sludge produced by a refinery as an example, the basic composition of the waste oil is 5-8% moisture, 0.3-0.6% ash, 1.1-2% mechanical impurities, and a density of 0.89kg / cm 3; The oil sludge is the bottom sludge of the refinery tank, with an oil content of 20-30%, and the rest is water and mechanical impurities. The specific disposal process is as follows:

[0043] (1) Pump the waste lubricating oil in the raw material tank to the pretreatment tank, settle and dehydrate it, set up a vacuum system on the top of the pretreatment tank, the vacuum degree is 100 kPa, the temperature at the top of the tower is 90 ℃, and the low boiling matter is separated and moisture;

[0044] (2) The pretreated raw materials are discharged from the middle and lower parts, and then sent to the distillation tower through the pump and the double-cylinder filter in turn. The filtratio...

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Abstract

The invention provides a technological method for regenerative recycling treatment of waste mineral oil. The method comprises following steps: the waste mineral oil is pumped into a pretreatment tankand subjected to sedimentation and dehydration, and light oil and water are separated out; the pretreated raw material is discharged from the lower middle part of the pretreatment tank and fed to a distillation tower for distillation, the material is heated by a heating furnace and then returns to the tower, and a gas phase component in the distillation tower is condensed and subjected to gas-liquid separation and then enters a product buffer tank; the material in the product buffer tank is pumped into a refining tower for refining; the material at the bottom of the treatment tank and filter residues are collected and spirally conveyed into a thermal desorption kettle together with heavy oil residues at the bottom of the distillation tower and high-viscosity waste oil. According to the technological method, large-scale efficient treatment of multiple kinds of waste lubricating oil is realized, operability is high, the technological process is simple, heavy oil and high-viscosity oil are deeply recycled, so that yield of residues is reduced, operating cost of a follow-up treatment enterprise is greatly reduced, and oil rate of the residues can be as low as 1% or lower.

Description

technical field [0001] The invention relates to the field of regeneration treatment of waste mineral oil, in particular to a process method for regeneration and resource disposal of waste mineral oil. Background technique [0002] Waste mineral oil mainly comes from industrial waste lubricating oil, waste hydraulic oil and waste heat transfer oil, waste engine oil produced by automobiles and other vehicles, and waste oil produced by oilfield mining and refining. Leakage, random discarding or improper disposal of waste mineral oil will cause huge pollution to soil and groundwater. It is listed as hazardous waste by the state, and the hazardous waste category is HW-08. The scientific and rational disposal of waste mineral oil has been a hotspot of extensive research. [0003] In recent years, with the rapid development of my country's economy, especially the rapid increase in manufacturing and automobile consumption, the output of waste mineral oil has also increased by leaps...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00
CPCC10M175/0033
Inventor 徐品剧长生
Owner LUOYANG HAOHAI IND & TRADE
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