Lubricating oil composite filter aid and preparation method thereof

A filter aid, lubricating oil technology, applied in lubricating compositions, chemical instruments and methods, other chemical processes, etc., can solve the problems of unsatisfactory permeability, increased filtration cost, poor oil quality, etc., and achieve ideal screening Filtering effect, accelerating pre-filtering layer formation, increasing toughness and rigidity effect

Inactive Publication Date: 2017-05-17
SHANGHAI INST OF TECH
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  • Application Information

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Problems solved by technology

[0005] In order to increase the filtration speed and improve the quality of the purified liquid, after the inorganic minerals are often activated, they are used in a single or composite form for filter aids in liquid purification, but there are still some deficiencies in actual use, such as: disclosed in Chinese patent CN102167993A A method for purifying waste engine oil containing phosphating film, the proportion of activated clay is 3% of the waste oil, the oil quality after filtration is poor, and there is also a phenomenon that the oil product is oxidized due to high oil temperature; a kind of waste oil aid published by Chinese patent CN 102580680A Filter composition, due to the poor permeability of the filter medium and the short service life of the filter aid, the cost of filtration is greatly increased; the filter aid disclosed in Chinese patent CN 1108149A is composed of diatomite, bentonite and sodium silicate solution It is specially developed for beer filtration, and it is difficult to apply to oil purification because it has not been specially roasted; Chinese patent CN 102580398 discloses a rolling oil filtration method for aluminum foil rolling mills, and the addition ratio of diatomite and clay is 4 : 1. It is mainly developed to avoid the static electricity generated by the rolling oil tank due to

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  • Lubricating oil composite filter aid and preparation method thereof

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preparation example Construction

[0026] A preparation method of a lubricating oil composite filter aid, mainly comprising ingredients; acidification, washing, drying, roasting, and screening of inorganic minerals; washing, drying, and screening of organic cellulose; and inorganic minerals and organic cellulose The mixing and other steps are composed.

[0027] 1. Ingredients

[0028] The ingredients consist of inorganic minerals and organic cellulose. The proportion of inorganic minerals is 50-90%, at least two or more of activated clay, diatomite, bentonite, activated carbon, perlite, zeolite, attapulgite, sepiolite, fly ash, steel slag powder, and slag powder The proportion of organic cellulose is 10-50%, which is selected from one or more of sawdust, sawdust, bagasse, bran, paper pulp, rice husk, bamboo chips, straw residue, and lignocellulose.

[0029] Activated white clay is commonly known as activated clay, and its main component is montmorillonite minerals. It has the ability to absorb colored substan...

Embodiment 1

[0057] A composite filter aid suitable for filtering waste lubricating oil, the preparation process of which is as follows:

[0058] (1) Ingredients: by weight percentage, it includes the following components: 10% activated clay, 40% diatomaceous earth, 10% activated carbon, 10% fly ash, and 30% sawdust.

[0059] (2) Batching, acidification, washing, drying, roasting, sieving of inorganic minerals: Four active clay (10%), diatomaceous earth (40%), activated carbon (10%) and fly ash (10%) After the two materials are mixed evenly, place them in 5mol / L sulfuric acid solution, keep the soaking temperature at 80°C, and the solid-to-liquid ratio at 1:5, and pickle for 8 hours under constant stirring. After the pickling, wash the material until the pH value is neutral, filter it with suction, and dry it at 70-105°C to constant weight. The inorganic mixture material is roasted at 450°C for 2 hours, cooled to room temperature, and sieved to control the particle size of the material to...

Embodiment 2

[0065] Compared with Example 1, the process conditions are the same, the difference is that the proportion of ingredients is different; the proportion of ingredients is: activated clay 5%, diatomaceous earth 30%, activated carbon 20%, slag micropowder 20%, sawdust 25%.

[0066] The use of composite filter aids:

[0067] Using the lubricating oil composite filter aid obtained in Example 2, according to the ratio of 1:20 to the waste oil, add it to the waste lubricating oil refined by sulfuric acid-clay, keep the oil temperature at 80°C, and filter, before and after filtration , the turbidity decreased from 6NTU (scattering turbidity unit) to 0.3NTU, and the color changed from reddish brown to light yellow and transparent, while the reference two groups (using activated clay and diatomaceous earth as a single filter aid, activated by acid washing and roasting) The operation is the same as this composite filter aid, the ratio of filter aid to waste oil is 1:20), after filtration,...

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Abstract

The invention discloses a lubricating oil composite filter aid and a preparation method thereof. The composite filter aid is prepared through the steps of preparing materials, acidizing, washing, drying, roasting, sieving and mixing. The composite filter aid is prepared from materials of inorganic mineral substances and organic cellulose, wherein the mass percent of the mineral substances is 50 to 90%, and the mineral substances are chosen from at least two of activated clay, kieselguhr, bentonite, activated carbon, perlite, zeolite, attapulgite, sepiolite, vermiculite, activated aluminum oxide, coal ash, steel slag micropowder and superfine slag powder; the proportion of the organic cellulose is 10 to 50%, and the organic cellulose is chosen from one or more of saw powder, wood bit, bagasse, bran, paper pulp, rice hull, bamboo residue, straw shred residue and lignocellulose. The lubricating oil composite filter aid has the advantages of convenience in use, quick filtering speed and good cleaned oil quality, capability of serving as a filtering agent in a lubricating oil clay refining period and suitablity for adsorbing and filtering technologies of other petroleum products, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of purification of waste lubricating oil, and in particular relates to a lubricating oil composite filter aid and a preparation method thereof. Background technique [0002] Lubricating oil mainly plays the role of lubrication, heat dissipation, speed regulation, flushing, shock absorption, insulation arc extinguishing, rust prevention, dust prevention, protection and sealing in equipment, and is used in rolling steel, machinery, electric power, transportation, chemical industry, petroleum and other fields widely. During the use of lubricating oil, it is affected by air, temperature, metal, friction, etc. After a certain period of time, it will deteriorate and become waste oil. [0003] In view of the serious situation of energy depletion and the pollution of waste lubricating oil to the environment, the regeneration of waste lubricating oil has attracted the attention of various countries. The regeneratio...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C10M175/00
CPCB01J20/24C10M175/0058C10M175/0083
Inventor 毕东苏石磊曹月张帆
Owner SHANGHAI INST OF TECH
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