Complexing-adsorption refining process for lubricating oil base oil

A lubricating oil base oil, adsorption refining technology, applied in the direction of lubricating composition, only multi-stage serial refining process, etc., can solve the problem of lower base oil yield, shortened service life of filter cloth, engineering investment and process operation The problem of high cost can solve the problem of poor stability of lubricating base oil, improvement of oxidation stability, and improvement of oxidation stability

Active Publication Date: 2015-02-11
WUHAN RUNERHUA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) A higher refining depth requires a larger amount of clay, which not only reduces the yield of base oil, but also causes serious waste clay pollution;
[0007] (2) The selective adsorption of clay is not good, and the ideal component sulfide of base oil is also removed during the refining process;
[0008] (3) The addition of a large amount of solid granular white clay will reduce the processing capacity of the device, increase consumption, shorten the service life of the filter cloth of the filter machine, and increase the labor intensity of the workers.
[0009] High-pressure hydrogenation can effectively remove nitrogen compounds, but the natural antioxidant sulfur compounds in the oil are also removed at the same time, and it is easy to crack high-viscosity oil into low-viscosity oil, and the product has phenomena such as freezing point rebound and poor light stability. , while the project investment and process operation costs are relatively high, it is difficult to be widely used in my country at this stage

Method used

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  • Complexing-adsorption refining process for lubricating oil base oil
  • Complexing-adsorption refining process for lubricating oil base oil
  • Complexing-adsorption refining process for lubricating oil base oil

Examples

Experimental program
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Effect test

Embodiment 1

[0040] 1), dewaxed oil (its properties are as shown in Table 1) and complexed refining agent (15% aminotriacetic acid, 65% 1-butyl-3-methylimidazole tetrafluoroethylene) of Lanzhou Petrochemical Co., Ltd. Borate, 15% ethylene glycol, 5% hydroxymethyl cellulose) are premixed, and the addition of the complexing refining agent is 0.3% of the quality of Lanzhou Petrochemical minus the second-line solvent dewaxed oil;

[0041] 2) After fully stirring and mixing at a temperature of 80-90°C for 30 minutes, stand at a temperature of 80-90°C for heat preservation, and settle naturally by gravity for 2 hours, and the tailings of the complex will settle at the bottom of the settling tank;

[0042] 3), take out complexation refined oil from the upper part of the settling tank, add adsorbent (mass percentage: ZnO: 21%; Al 2 o 3 : 68%; SiO 2 : 3%; P 2 o 5 : 2%; MoO 3 : 2.5%; WO 3 : 2%; GeO 2 : 1.5%), the amount of adsorbent added is 0.4% of the quality of Lanzhou Petrochemical’s seco...

Embodiment 2

[0052] 1), the dewaxed oil of Lanzhou Petrochemical minus third-line solvent (its properties are as shown in Table 2) and complexed refined preparation (mass percentage is 15% aminodiacetic acid, 70% 1-butyl-3-methylimidazole tetrafluoro Borate, 12% ethylene glycol, 3% polyacrylamide) are premixed, and the addition of the complexing refining agent is 0.4% of the quality of Lanzhou Petrochemical minus the third-line solvent dewaxed oil;

[0053] 2) After fully stirring and mixing at a temperature of 80-90°C for 30 minutes, stand at a temperature of 80-90°C for heat preservation, and settle naturally by gravity for 2 hours, and the tailings of the complex will settle at the bottom of the settling tank;

[0054] 3), take out complexation refined oil from the upper part of the settling tank, add adsorbent (mass percentage: ZnO: 21%; Al 2 o 3 : 68%; SiO 2 : 3%; P 2 o 5 : 2%; MoO 3 : 2.5%; WO 3 : 2%; GeO 2 : 1.5%), the amount of adsorbent added is 0.6% of the quality of Lanzh...

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Abstract

The invention discloses a complexing-adsorption refining process for lubricating oil base oil. The complexing-adsorption refining process for the lubricating oil base oil comprises the following steps: completely mixing and contacting a complexing refining agent with the lubricating oil base oil to react; settling the mixed materials in a settling tank to obtain complexing refining oil on the upper layer of the settling tank and separate complex tailings from the lower layer of the settling tank; completely mixing and contacting an adsorbent and the complexing refining oil to remove the residual polar components such as the complexing refining agent, the complex tailings, alkaline nitride, alkyl acid, colloid, asphaltene and the like; and removing the absorbent tailings from the absorption refining oil by a filtering method. In the lubricating oil base oil refined by the complexing-adsorption refining process, the removal rate of the polar components is more than 90 percent, the oxidation stability is obviously improved, and the chromaticity and the acid value are obviously reduced. According to the complexing-adsorption refining process, the yield of the lubricating oil base oil can be increased by 1 to 2 percent, the temperature of a heating furnace is reduced by more than 80 DEG C, the processing capability of a device is improved by over 50 percent, and the emission quantity of solid wastes is reduced by over 90 percent.

Description

technical field [0001] The invention relates to a lubricating oil base oil complexation-adsorption refining process. Background technique [0002] With the increasingly stringent energy-saving and environmental protection regulations, there are higher requirements for the service life and oil change period of lubricating oil, which requires modern lubricating oil to have good oxidation stability. This is one of the most important properties of lube base stocks and finished oils. The oxidation stability of the oil is mainly related to the chemical composition of the oil. It is generally believed that polar components such as basic nitrides, colloids, and asphaltenes have a negative effect on the oxidation stability of oil products. Their existence deteriorates the oxidation stability of the oil, while the sulfur compounds play a positive role, and the effects of different sulfur compounds are not the same. The negative effect of polar components on the oxidation stability ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/08C10M177/00
Inventor 吴宇锋朱琼徐文刚崔小刚勒国民
Owner WUHAN RUNERHUA TECH
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