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A regeneration treatment method of complexation-membrane separation-hydrogenation-fractionation of waste lubricating oil

A waste lubricating oil and membrane separation technology, which is applied in the fields of hydrotreating process, lubricating composition, and hydrocarbon oil treatment, can solve the problems of easy deposition, poor product properties, and easy coking, etc., and achieve high added value and good product properties , the effect of easing conditions

Active Publication Date: 2021-02-05
NINGBO ZHONGXUN ENVIRONMENTAL TECH CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a regeneration treatment method of complexation-membrane separation-hydrogenation-fractionation of waste lubricating oil, which solves the problems of easy deposition, easy coking and poor product properties in the raw material treatment process of existing waste lubricating oil

Method used

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  • A regeneration treatment method of complexation-membrane separation-hydrogenation-fractionation of waste lubricating oil
  • A regeneration treatment method of complexation-membrane separation-hydrogenation-fractionation of waste lubricating oil
  • A regeneration treatment method of complexation-membrane separation-hydrogenation-fractionation of waste lubricating oil

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Experimental program
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Effect test

Embodiment 1

[0029] According to the above process, combined with specific waste lubricating oil, the reaction is carried out, and the specific conditions are as follows: the complexing agent is triethanolamine, the concentration of its aqueous solution is 20w%, the mixing mass ratio of waste lubricating oil and solution is 40:1, and the stirring temperature is 120°C , 60min when stirring and mixing; membrane separation pump flow rate is 5m 3 / h, temperature is 70°C, pressure is 0.1MPa; hydrofining reaction temperature is 350°C, reaction pressure is 8.0MPa, hydrogen-oil ratio is 1000:1, feed volume space velocity is 0.5h -1 , Ni in the catalyst is 3.5w%, Mo is 15.0w%, and W is 2.0w%.

Embodiment 2

[0031] According to above-mentioned technology, in conjunction with concrete waste lubricating oil, carry out reaction, specific condition is as follows: complexing agent is sodium tripolyphosphate, and its aqueous solution concentration is 10w%, waste lubricating oil and solution mixing mass ratio are 10:1, stirring temperature is 180°C, stirring and mixing for 20 minutes; the flow rate of the membrane separation pump is 10m 3 / h, temperature 130°C, pressure 0.3MPa; hydrofining reaction temperature 340°C, reaction pressure 6.0MPa, hydrogen-oil ratio 1000:1, feed volume space velocity 1.0h -1 , Ni in the catalyst is 4.0w%, Mo is 14.0w%, and W is 3.0w%.

Embodiment 3

[0033]According to the above process, combined with specific waste lubricating oil, the reaction is carried out, and the specific conditions are as follows: the complexing agent is ethylenediamine tetraacetate, the concentration of its aqueous solution is 30w%, and the mixed mass ratio of waste lubricating oil and solution is 50:1, The stirring temperature is 60°C, and the mixing time is 90 minutes; the flow rate of the membrane separation pump is 2m 3 / h, temperature is 40°C, pressure is 0.5MPa; hydrofining reaction temperature is 390°C, reaction pressure is 12.0MPa, hydrogen-oil ratio is 1000:1, feed volume space velocity is 1.5h -1 , Ni in the catalyst is 2.0w%, Mo is 16.0w%, and W is 1.5w%.

[0034] (1) Raw material properties of waste lubricating oil

[0035]

[0036]

[0037] (2) Material balance after treatment

[0038]

[0039] (3) Main product properties

[0040] Naphtha (IBP~180℃) Properties and Composition

[0041]

[0042] Properties and Composition...

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Abstract

The invention relates to a regeneration treatment method of complexation-membrane separation-hydrogenation-fractionation of waste lubricating oil, comprising the following steps: (1) complexation treatment: complexation of waste lubricating oil and complexing agent aqueous solution; (2) Membrane separation: the complexed mixture is separated in a membrane separator, the residual liquid after the membrane is used as an asphalt blend, and the clear liquid after the membrane enters the fixed bed for hydrofining; (3) Hydrofinishing: the clear liquid after the membrane is in the load type Hydrofining is carried out under the action of catalyst, the gas produced by hydrofining enters the pipe network as fuel, and the liquid product enters the atmospheric fractionation tower; (4) Atmospheric fractionation, the liquid product produced by hydrofining enters the atmospheric fractionation tower, The top of the pressure fractionation tower is naphtha products, the side line of the atmospheric fractionation tower is diesel products, and the bottom of the atmospheric fractionation tower is high-quality lubricating oil base oil. The method of the invention is easy to operate, avoids the deposition phenomenon of waste lubricating oil in the process of pipeline transportation, prolongs the production cycle, and the utilization rate of waste lubricating oil raw materials is as high as 99%.

Description

technical field [0001] The invention relates to a regeneration treatment method of complexation-membrane separation-hydrogenation-fractionation of waste lubricating oil, which belongs to the oil upgrading process in petroleum processing technology. Background technique [0002] Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction and protect machinery and processed parts. It mainly plays the roles of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering. Lubricating oil will be mixed with impurities and moisture during use, and it is often in a high temperature state. Therefore, physical and chemical reactions will occur after long-term use, and various oxides, sludge, carbon residues, carboxylic acids, etc. will accumulate in the lubricating oil. Its lubricity is reduced, and the lubricating effect can no longer be achieved, and it becomes waste lubricating oil. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M175/00C10G67/14
Inventor 王鸣李传邓文安
Owner NINGBO ZHONGXUN ENVIRONMENTAL TECH CO LLC
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