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Adsorbent for refined and denitrified lubricating oil base oil

A technology of lubricating base oil and adsorbent, which is applied in the fields of refined hydrocarbon oil, lubricating composition, petroleum industry, etc., can solve the problems of no reported attapulgite refined lubricating base oil, etc., and achieves abundant reserves, is conducive to diffusion, The effect of reducing the filtration resistance

Active Publication Date: 2011-04-06
WUHAN TEXTILE UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no literature report that attapulgite is used as the main raw material of adsorbent in the refining process of lubricating oil base oil, especially there is no report that attapulgite is used to refine lubricating oil base oil after solvent modification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of embodiment 1 adsorbent

[0022] Take 1 kg of attapulgite clay, soak it in 0.5M sulfuric acid solution for 5 hours, stir intermittently during the dipping period, then activate it at 150°C, crush it and sieve it with 300 mesh to get porous attapulgite powder. After testing, the specific surface area of ​​the prepared porous attapulgite powder is 121m 2 / g, water content 4.2%.

Embodiment 2

[0023] The preparation of embodiment 2 adsorbents

[0024] Take 1 kg of attapulgite clay, soak it in 0.3M hydrochloric acid solution for 10 hours, stir intermittently during the dipping period, then activate it at 200°C, crush it and sieve it through a 250-mesh sieve to obtain porous attapulgite powder. After testing, the specific surface area of ​​the prepared porous attapulgite powder is 134m 2 / g, water content 2.8%. The prepared porous attapulgite powder and diatomaceous earth are mixed at a weight ratio of 8:1 to form an adsorbent.

Embodiment 3

[0025] The preparation of embodiment 3 adsorbent

[0026] Take 1 kg of attapulgite clay, soak it in 95% ethanol solution for 8 hours, stir intermittently during the dipping period, then activate it at 120°C, crush it and sieve it with 200 meshes to get porous attapulgite powder. After testing, the specific surface area of ​​the prepared porous attapulgite powder is 106m 2 / g, water content 4.7%. The prepared porous attapulgite powder and diatomaceous earth are mixed at a weight ratio of 9:1 to form an adsorbent.

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Abstract

The invention relates to an adsorbent for refined and denitrified lubricating oil base oil. The adsorbent comprises porous attapulgite powder obtained sequentially through solvent modification, high-temperature activation, pulverization and sieving, wherein the specific surface area of the porous attapulgite powder is 100-200m<2> / g, the water content is smaller than 6 percent, and the grain size of more than 90 percent of the porous attapulgite powder is 200-300 meshes; and the porous attapulgite powder accounts for more than 70 percent of the total weight of the adsorbent. The adsorbent not only can reduce the adsorption temperature, reduce the dosage and the energy consumption of the adsorbent and improve the oil yield, but also generates no environmental pollution.

Description

technical field [0001] The invention belongs to the field of petroleum refining, and relates to an adsorbent for refining lubricating oil base oil after denitrification, in particular to an adsorbent containing porous attapulgite powder for refining lubricating oil base oil after denitrification . Background technique [0002] As we all know, the quality level of lubricating oil should adapt to the development of machinery industry. With the development of my country's machinery industry and the continuous increase of imported equipment, the requirements for the quality of lubricating oil have increased rapidly. As far as the quality of lubricating oil is concerned, the oxidation stability index of oil directly affects the service life and performance of lubricating oil. The oxidation stability of lubricating base oil is closely related to its chemical composition. Specifically, the nitrogen compounds present in lubricating base oil can promote oxidation side reactions, es...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/14B01J20/20B01J20/18B01J20/22C10G25/00C10M177/00
Inventor 夏明桂王琦黄艳刚刘瑞华吴凡李满
Owner WUHAN TEXTILE UNIV
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