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Preparation method of attapulgite-based refining agent for lubricant base oil adsorption refining

A lubricating oil base oil and attapulgite technology, which is applied in the direction of refined hydrocarbon oil, lubricating composition, chemical instruments and methods, etc., can solve problems such as environmental pollution, improve specific surface area, reduce filtration resistance, adsorption performance and The effect of ion exchange capacity promotion

Inactive Publication Date: 2014-09-10
盱眙凹土能源环保材料研发中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent application CN 102000540A discloses an adsorbent suitable for adsorption and refining of lubricating oil base oils obtained by using attapulgite clay as a raw material through solvent modification, high temperature activation, crushing and sieving in sequence, but the adsorbent is mainly It is to modify the attapulgite in a solvent to produce a large amount of organic solvents and pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Mix 5 g of attapulgite, 1 g of sulfuric acid and 20 ml of water, stir at a constant temperature of 90 °C at a speed of 60 r / min for 120 min, dry, pulverize, pass through a 200-mesh sieve, and activate at 400 °C for 1 h , to obtain acid-modified attapulgite; the specific surface area of ​​the obtained acid-modified attapulgite is 151.2m 2 / g, water content 3.1%, free acid 0.12%.

[0022] (2) Weigh 3 g of the above acid-activated attapulgite, add 1.5 g N-( β -Aminoethyl)- gamma - Aminopropyltrimethoxysilane, 98.5 g of toluene, refluxed for 1 hour, dried, pulverized, and passed through a 200-mesh sieve to obtain an attapulgite-based refined preparation.

Embodiment 2

[0024] (1) Mix 10 g of attapulgite, 3 g of acid and 50 ml of water, stir at a constant temperature of 60 °C at a speed of 400 r / min for 60 min, dry, pulverize, pass through a 200-mesh sieve, and activate at 100 °C for 10 h , to obtain acid-activated attapulgite; the specific surface area of ​​the obtained acid-activated attapulgite is 286.7 m 2 / g, water content 2.4%, free acid 0.09%.

[0025] (2) Weigh 20 g of acid-activated attapulgite, add 8 g of γ-aminopropyltriethoxysilane and 92 g of toluene, reflux for 24 hours, dry, pulverize, and pass through a 200-mesh sieve to obtain attapulgite-based refined preparation.

Embodiment 3

[0027] (1) Mix 10 g of attapulgite, 5 g of acid and 30 ml of water, stir at a constant temperature of 30 °C at a speed of 100 r / min for 180 min, dry, pulverize, pass through a 200-mesh sieve, and activate at 180 °C for 4 h , to obtain acid-activated attapulgite; the specific surface area of ​​the obtained activated attapulgite is 235.1 m 2 / g, water content 4.1%, free acid 0.19%.

[0028] (2) Weigh 10 g of acid-activated attapulgite, add 20 g of cetyltrimethylammonium chloride, 80 g of toluene, reflux for 12 hours, dry, pulverize, and pass through a 200-mesh sieve to obtain attapulgite-based refined preparation.

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Abstract

The invention discloses a preparation method of an attapulgite-based refining agent for lubricant base oil adsorption refining. The preparation method comprises the following main processes: acid-activating raw attapulgite, drying, crushing, screening, roasting and activating to obtain the acid-activated attapulgite, organically modifying the acid-activated attapulgite, drying, crushing, and screening to obtain the attapulgite-based refining agent. The attapulgite-based refining agent prepared by the invention has the characteristics that the refining agent can be easily separated from the product without polluting and corroding equipment, and the post-treatment of the product is simple.

Description

technical field [0001] The invention relates to a preparation method of an attapulgite soil-based refining agent used for adsorption and refining of lubricating oil base oil, and belongs to the technical field of high-value utilization of attapulgite. Background technique [0002] The aromatic content, nitrogen content, sulfide content and color of lubricating base oil are important indicators of lubricating oil performance. In the process of lubricating oil production, in order to obtain lubricating oil with good chroma, high light transmittance, good stability, and strong anti-emulsification performance, the lubricating oil must be refined after solvent refining and dewaxing to remove the lubricating oil. A small amount of solvents and harmful substances (such as colloids, sulfur-containing compounds, nitrogen-containing compounds, organic acids, water and other polar substances). [0003] At present, the commonly used refining methods are: hydrogenation refining and whit...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30C10M177/00C10G25/00
Inventor 陈新德张海荣郭海军杨会娟熊莲黄超林晓清
Owner 盱眙凹土能源环保材料研发中心
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