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A kind of antifouling ceramic membrane for waste lubricating oil separation and preparation method

A technology of waste lubricating oil and ceramic membrane, applied in the directions of lubricating composition, semi-permeable membrane separation, chemical instrument and method, etc., can solve the problems of restricting the development of inorganic membrane technology, membrane fouling, high operation and maintenance cost, and achieve the improvement of membrane fouling. The effect of resistance

Active Publication Date: 2019-07-23
东营德汇环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the current machine-membrane separation technology, such as production costs, high operation and maintenance costs, and membrane pollution problems, which seriously restrict the further development of inorganic membrane technology, the purpose of the present invention is to provide an antifouling ceramic for the separation of waste lubricating oil Membrane and preparation method, the ceramic membrane relies on the adsorption and photocatalytic degradation of organic matter inside to improve the resistance of the membrane surface to membrane fouling during the filtration process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method for an antifouling ceramic membrane used for waste lubricating oil separation, comprising the following steps:

[0033] (1) Preparation of catalyst powder: Mix tetra-n-butyl titanate and kaolinite in water evenly, then add hydrochloric acid to adjust the pH of the solution to 5, and continue stirring at a temperature of 15°C for 6 hours to obtain a suspension. After hydrothermal reaction at 200°C for 24 hours, cool naturally at room temperature, take out the reactant and wash it with ethanol and deionized water until neutral, dry it at 80°C for 24 hours, grind it into powder, and calcinate at 800°C for 4 hours, Promptly obtain the catalyst powder of the kaolin that supports titania, the particle diameter of described catalyst powder is 300nm;

[0034] (2) Catalyst coating: fix the substrate on a fixture, place the catalyst powder on the surface of the substrate, and apply mechanical pressure to make the catalyst powder firmly adhere to the substrate...

Embodiment 2

[0041] A preparation method for an antifouling ceramic membrane used for waste lubricating oil separation, comprising the following steps:

[0042] (1) Preparation of catalyst powder: Mix tetra-n-butyl titanate and kaolinite in acetone evenly, then add nitric acid to adjust the pH of the solution to 4, and continue stirring at a temperature of 54°C for 5 hours to obtain a suspension. After the solution was hydrothermally reacted at 180°C for 20 hours, it was cooled naturally at room temperature, and the reactant was taken out and washed with ethanol and deionized water until neutral, dried at 70°C for 18 hours, ground into powder, and calcined at 500°C for 3 hours , that is to obtain the catalyst powder of kaolin loaded with titanium dioxide, the particle diameter of the catalyst powder is 200nm;

[0043] (2) Catalyst coating: fix the substrate on the jig, place the catalyst powder on the surface of the substrate, and apply mechanical pressure to make the catalyst powder firml...

Embodiment 3

[0050] A preparation method for an antifouling ceramic membrane used for waste lubricating oil separation, comprising the following steps:

[0051] (1) Preparation of catalyst powder: Mix tetraisopropyl titanate and kaolinite in ethanol evenly, then add sulfuric acid to adjust the pH of the solution to 5, and continue stirring at a temperature of 10°C for 5 hours to obtain a suspension. After the solution was hydrothermally reacted at 150°C for 30 hours, it was naturally cooled at room temperature, the reactant was taken out and washed with ethanol and deionized water until neutral, dried at 90°C for 30 hours, ground into powder, and calcined at 600°C for 3 hours , that is to obtain the catalyst powder of kaolin loaded with titanium dioxide, the particle diameter of the catalyst powder is 400nm;

[0052] (2) Catalyst coating: fix the substrate on the fixture, place the catalyst powder on the surface of the substrate, and apply mechanical pressure to make the catalyst powder fi...

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Abstract

The invention relates to the technical field of lubricant oil separation membranes, in particular to an anti-pollution ceramic membrane for separating waste lubricant oil and a preparation method. The preparation method of the anti-pollution ceramic membrane for separating the waste lubricant oil comprises steps as follows: (1) titania supported kaolin catalyst powder is prepared; (2) the catalyst powder is applied to a substrate with a laser coating method; (3) eletrochemical deposition of calcium phosphate is performed on the substrate. Kaolin is subjected to doping treatment to be endowed with photocatalytic performance and coats the surface of a conventional membrane with a laser deposition method, and calcium phosphate is deposited on the surface of kaolin to reduce defects of kaolin; due to the fact that calcium phosphate and kaolin have good compatibility, kaolin can be subjected to laser repair, lattice imperfection of kaolin is made up for, and the anti-pollution capacity of a membrane surface of the ceramic membrane is improved in the filtering process by adsorption and photocatalytic degradation characters of organic matter inside.

Description

technical field [0001] The invention relates to the technical field of lubricating oil separation membranes, in particular to an antifouling ceramic membrane for separating waste lubricating oil and a preparation method thereof. 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 role of lubrication, auxiliary cooling, rust prevention, cleaning, sealing and buffering, as long as it is Applied between two relatively moving objects, the function that can reduce the friction and wear caused by the contact between the two objects is lubricating oil. [0003] In terms of composition, lubricating oil is composed of 80%-90% base oil and 10%-20% additives. The main chemical composition is a mixture of various hydrocarbons and a small amount of non-hydrocarbons. However, after the lubricating oil has been used f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D67/00B01D69/02B01D69/12B01D71/02C10M175/06
CPCB01D67/0039B01D67/0069B01D69/02B01D69/12B01D71/02B01D71/024B01D2323/34B01D2325/10C10M175/06
Inventor 陈庆司文彬
Owner 东营德汇环境科技有限公司
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