Waste mineral oil treatment process

A technology of waste mineral oil and treatment process, which is applied in the direction of only multi-stage series refining process, refining by filtration, and separation of dispersed particles, etc., which can solve the problems of difficult treatment, increased membrane work, and easy clogging of the membrane. Achieve the effect of good fluidity, enhanced fluidity, and not easy to clog

Active Publication Date: 2018-01-12
重庆瀚渝再生资源有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. Based on the wide range of sources of waste mineral oil in the prior art, waste mineral oil from various sources is generally processed in a centralized manner; for example, waste engine oil such as lubricating oil for locomotives, lubricating oil for transmission equipment, and industrial hydraulic oil is collected , and then concentrated treatment; the treatment is difficult, and the membrane is easy to be blocked and damaged during the treatment process; 2. When the waste mineral oil is treated by sedimentation in the early stage for slag removal, because no stirring is performed, the sedimentation cannot be made faster and more uniform, and the back-end cannot be guaranteed Product quality; 2. Waste mineral oil passes through a special high-intensity magnetic field pipeline after sedimentation and slag removal, and then uses high-frequency vibrating membrane treatment. The membrane is replaced frequently, which cannot prolong the service life of the membrane; the main reason is that the waste mineral oil is only The slag is removed by sedimentation, and then its fluidity is enhanced through a high-intensity magnetic field pipeline, but the light oil, water, and non-condensable gas in it need to be filtered through a vibrating membrane, which increases the work of the membrane and thus shortens the life of the membrane.

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Embodiment 1

[0035] In order to achieve the above object, the basic scheme of the present invention is as follows:

[0036] The waste mineral oil pretreatment process of the present invention is suitable for treating waste engine oils such as lubricating oil for locomotives, lubricating oil for transmission equipment, and industrial hydraulic oil.

[0037] Light oil refers to gasoline and diesel oil in the upper waste oil; non-condensable gas refers to air, hydrogen, nitrogen, lubricating oil vapor, etc. mixed in the refrigeration system. These gases circulate in the system with the refrigerant, do not condense with the refrigerant, and do not produce refrigeration effect.

[0038] The clear liquid in the present invention is unbleached primary lubricating oil with a viscosity of about 30-40cSt at 40°C; the concentrated liquid is black lubricating oil, viscosity modifier and residual additives with a viscosity of about 130-140cSt at 40°C.

[0039] Such as figure 1 As shown, the waste min...

Embodiment 2

[0048] The difference between this embodiment and embodiment 1 is:

[0049] The waste mineral oil treatment process includes the following treatment steps:

[0050] Step 1, impurity removal: put the collected waste mineral oil into the waste oil storage tank, and use a basket filter to filter out large-sized solid impurities in the waste mineral oil. The inside of the basket filter is an 80-mesh stainless steel filter. network.

[0051] Step 2, settling: add liquid caustic soda to the waste mineral oil in step 1 to neutralize it; add steam to heat under stirring state, the structure adopts the method of heating the inner coil at the upper end and the jacket at the bottom of the tank, and the equipped The use of anchor stirring at the beginning of settlement effectively ensures that the material is fully heated; when the steam heating temperature rises to 60°C, stop stirring, continue to heat up to 70°C, and maintain it within the temperature range of 70°C, and then settle. Th...

Embodiment 3

[0058] The difference between this embodiment and embodiment 1 is:

[0059] The waste mineral oil treatment process includes the following treatment steps:

[0060] Step 1, impurity removal: put the collected waste mineral oil into the waste oil storage tank, and use a basket filter to filter out large-sized solid impurities in the waste mineral oil. The inside of the basket filter is an 80-mesh stainless steel filter. network.

[0061] Step 2, settling: add liquid caustic soda to the waste mineral oil in step 1 to neutralize it; add steam to heat under stirring state, the structure adopts the method of heating the inner coil at the upper end and the jacket at the bottom of the tank, and the equipped The use of anchor stirring at the beginning of the settlement effectively ensures that the material is fully heated; when the steam heating temperature rises to 65°C, stop stirring, continue to heat up to 70°C, and maintain it within the temperature range of 75°C, and then settle...

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Abstract

The invention relates to the technical field of waste mineral oil, and particularly relates to a waste mineral oil treatment process. The treatment process comprises the following treatment steps of firstly, eliminating impurities; secondly, settling; thirdly, taking the upper layer of waste oil; fourthly, filtering under pressure; fifthly, flash vaporizing; sixthly, membrane filtering; and seventhly, cycling thick liquid. The waste mineral oil treatment process can ensure the quality of back-end oil and can prolong the service life of membranes.

Description

technical field [0001] The invention relates to the technical field of waste mineral oil, in particular to a process for treating waste mineral oil. Background technique [0002] Waste mineral oil is an extremely stable suspension emulsion system, containing a large amount of emulsified crude oil and solid suspended matter, which mainly comes from two processes: one is from the crude oil extraction process, and the oily waste generated during the crude oil extraction process mainly comes from the ground Treatment system, the oily waste produced in the process of oil extraction sewage treatment, this kind of waste mineral oil generally has the characteristics of high oil content, high viscosity, fine particles, and difficult dehydration. The second is from the cleaning process of the oil storage tank. When the oil storage tank is storing oil, a small amount of mechanical impurities, sand, soil, heavy metal salts, and heavy oily components such as paraffin and asphalt in the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02C10G31/09B01D53/02
Inventor 王春晖柏先强黄威
Owner 重庆瀚渝再生资源有限公司
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