Lubricating oil composite dewatering technique

A lubricating oil and process technology, applied in the field of lubricating oil composite dehydration process, can solve problems such as the impact of lubricating oil quality, and achieve the effects of improving quality, avoiding oxidation, and reducing costs

Inactive Publication Date: 2008-09-17
LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some also use fog forming, film forming and air blowing technologies in the vacuum system. Although the dehydration speed can be increased, the lubricating oil is oxidized under the action of oxygen in the air during dehydration, so the quality of the lubricating oil after dehydration is affected. affected

Method used

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  • Lubricating oil composite dewatering technique
  • Lubricating oil composite dewatering technique
  • Lubricating oil composite dewatering technique

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Embodiment one: the lubricating oil dehydration purification process of diesel engine, the steps are as follows:

[0019] The first step is to start the vacuum pump 7 to form a negative pressure in the composite dehydration device 4, so as to suck oil and nitrogen;

[0020] The second step is to filter the emulsified lubricating oil: the emulsified lubricating oil of the diesel engine enters the coarse filter 1 under the negative pressure formed by the composite dehydration device to remove solid particles in the oil;

[0021] The third step is to heat the emulsified lubricating oil: after removing the solid particles, the emulsified lubricating oil also enters the electric heater 2 for heating under the negative pressure formed by the composite dehydration device, and the temperature is controlled between 40-80°C; the temperature of the emulsified lubricating oil Elevation is conducive to the evaporation of water in it;

[0022] The fourth step, negative pressure micr...

Embodiment 2

[0029] Embodiment 2: The dehydration and purification process of lubricating oil for gasoline engines, the steps and conditions are the same as those in Embodiment 1, and the results after dehydration and purification are shown in Table 2.

[0030] Table 2 Test results after dehydration and purification of lubricating oil for gasoline engines

[0031]

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Abstract

The invention relates to a lubricating oil composite dehydration process, which comprises the following steps: a vacuum pump is started to form the negative pressure in a composite dehydration device; emulsified lubricating oil is filtered, and the emulsified lubricating oil enters into a coarse filter under the negative pressure effect formed in the composite dehydration device; the emulsifying lubricating oil is heated, and the temperature is controlled within 40 to 80 DEG C; negative pressure micro explosion demulsification is performed, the emulsified lubricating oil after heating is sprayed into the composite dehydration device, the water in liquid beads wrapped by oil is quickly evaporated under the negative pressure, micro explosion is produced to form vapor which is taken out; microporous inclined plate film flash evaporation is performed; nitrogen-enriched air lancing carrying evaporation is performed; the lubricating oil after the filtration and the evaporation can be used continuously. The lubricating oil composite dehydration process has the advantages that the film infiltration technology is applied to concentrate the nitrogen in the air, to perform effective protection for the oil product during the oil and water separation process, and to prevent the lubricating oil from being oxidated; the negative pressure formed in the composite dehydration device is utilized to absorb the nitrogen gas, and the cost is reduced.

Description

technical field [0001] The invention relates to a method for purifying lubricating oil, in particular to a compound dehydration process for lubricating oil. Background technique [0002] At present, technologies for dehydrating emulsified lubricating oil include centrifugal separation, vacuum filtration, etc. The process is to remove the water under the action of centrifugal force or suction vacuum system after heating the oil. Such as CN1904457A discloses the name "on-line purification equipment lubricating oil method", this method is to utilize the vacuum oil filter device to circulate the oil outside the body, and the lubricating oil is filtered and heated and purified during the circulation process, which can effectively prolong the life of the lubricating oil. Use cycle. Some also use fog forming, film forming and air blowing technologies in the vacuum system. Although the dehydration speed can be increased, the lubricating oil is oxidized under the action of oxygen in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/00
Inventor 成崇远
Owner LOGISTICAL ENGINEERING UNIVERSITY OF PLA
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