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Lubricating oil composite dewatering technique

A lubricating oil and process technology, which is applied in the field of lubricating oil compound dehydration process, can solve the problems of lubricating oil quality influence, achieve the effects of improving quality, avoiding oxidation, and reducing costs

Inactive Publication Date: 2012-08-29
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
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: 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 inhale 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 action of the negative pressure formed by the composite dehydration device to remove the solid particles in the oil;

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

[0022] The fourth step, negative pressure micro-explosive demuls...

Embodiment 2

[0029] Embodiment 2: Dehydration and purification process of lubricating oil of gasoline engine, 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 result table after dehydration and purification of lubricating oil of gasoline engine

[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 utilizedto 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 composite dehydration process for lubricating oil. Background technique [0002] At present, the technologies for dehydrating emulsified lubricating oil include centrifugal separation and vacuum filtration. For example, the name disclosed in CN1904457A is "On-line purification method of lubricating oil in equipment". This method uses a vacuum oil filter device to circulate the oil outside the body, and filters and heats the lubricating oil during the circulation process, which can effectively prolong the lubricating oil. cycle of use. Some also use mist forming, film forming and air blowing technology in the vacuum system. Although the dehydration speed can be improved, the lubricating oil is oxidized under the action of oxygen in the air during dehydration, so the quality of the dehydrated lubricating oil is affected. influence. SUMMARY OF THE INVENTION [0003] T...

Claims

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Application Information

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