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Waste lubricating oil hydrogenation reproducing method

A technology of waste lubricating oil and hydrogenation regeneration, applied in lubricating compositions, refining to remove heteroatoms, etc., can solve the problems of low quality, limited application scope, incomplete improvement of the smell, color, and corrosiveness of the regenerated oil. , to achieve the effect of improving the properties of regenerated oil, high yield and good quality

Inactive Publication Date: 2007-09-26
京福马(北京)石油化工高新技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the above waste lubricating oil treatment technologies only remove part of the impurities in the waste lubricating oil, and many impurities such as compounds containing sulfur, oxygen, and nitrogen are not removed, and the odor, color, and corrosiveness of the regenerated oil It has not been completely improved. In addition, the unsaturated compounds in the waste lubricating oil will also make the oxidation stability of the regenerated oil poor. Therefore, the regenerated lubricating oil base oil product has limited application range due to its low quality.
[0011] The oxidative deterioration of waste lubricating oil is usually less than 10%, most of which are still effective components of lubricating oil, but due to the impurities introduced during engine operation and the addition of various additives, it is more difficult to recycle waste lubricating oil

Method used

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  • Waste lubricating oil hydrogenation reproducing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take a waste lubricating oil sample (oil sample No. 1), see Table 1 for its specific properties. It can be seen that the waste lubricating oil raw material has the characteristics of dark color, low flash point, high acid value and high content of heavy metals.

[0044] The waste lubricating oil was heated to 85° C. under normal pressure for 4 hours at a constant temperature for dehydration (water content < 0.5 wt %). The dehydrated oil is carried out to remove mechanical impurities.

[0045] The filtered oil is in a fixed-bed reactor equipped with 100ml of adsorbent, the adsorbent is alumina, its shape is spherical or cylindrical, the particle diameter is Φ2.0×(3~8)mm, and the heap ratio 0.50~0.60g / cm 3 , specific surface area 260m 2 / g, pore volume 0.55mL / g. Reaction condition: space velocity 0.5h -1 , pressure 1.0MPa, reaction temperature 320°C, hydrogen to oil volume ratio 80 (the purity of hydrogen used in this example is 99.7%).

[0046] Please refer to Tabl...

Embodiment 2

[0061] Take a waste lubricating oil sample (oil sample No. 2), see Table 1 for its specific properties. It can be seen that the acid value and heavy metal content of the waste lubricating oil raw material are higher than those of the waste lubricating oil sample in Example 1.

[0062] The concrete operating method of oil sample regeneration is the same as embodiment 1. Please refer to Table 5, Table 6, Table 7 and Table 8 for the obtained oil performance measurement results.

[0063] Table 5 shows the main properties of the oil samples in this example after hydroadsorption treatment. It can be seen from Table 5 that most of the heavy metals in the oil sample after adsorption have been removed, and the heavy metal content also meets the requirement of less than 50ppm.

[0064] Table 6 shows the effect of further removing impurities after the oil sample in this example is pre-hydrotreated in a protection tower reactor equipped with a protection agent. It can be seen that the ...

Embodiment 3

[0073] This embodiment adopts the same waste lubricating oil sample (oil sample No. 1) as in Example 1, and the operating conditions of the waste lubricating oil are dehydrated, filtered to remove mechanical impurities, adsorption pretreatment steps, and prehydrotreatment steps. It is the same as in Example 1, and the effect of the process parameter change in the main hydrogenation process on the quality of regenerated oil was investigated and tested.

[0074] Test 1: At an airspeed of 0.8h -1 , pressure 12.0MP, hydrogen-to-oil ratio 700, investigate the yield and properties of fractions > 320°C of refined oil samples at different temperatures. The evaluation results are shown in Table 9.

[0075] As can be seen from the results in Table 9: under the above conditions of space velocity, pressure and hydrogen-to-oil ratio, the temperature of the hydrogenation reaction is controlled under the premise of satisfying the quality of the hydrogenation product, which has a certain inf...

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Abstract

The invention discloses a waste fluid oil hydrogenation reclaiming method, which comprises the following steps: choosing the waste fluid oil as raw material; dewatering; filtering; proceeding adsorption procession; stripping moisture, mechanical impurity, colloid, asphaltene and most of heavy metal impurities; proceeding pre-hydrofining in the reactor with preservative; further-stripping impurity; leading the waste fluid oil into hydrogenation primary reactor; realizing hydrofining under the function of hydrogenation catalyst; making the non-ideal component of raw oil hydrogenation saturation; getting product yield; proceeding fractional distillation and cutting. This invention possesses merits of convenient operation and clean environment, which can make the reclaiming ratio reach above 90%.

Description

technical field [0001] The invention relates to a method for regenerating waste lubricating oil, in particular to a process method for recycling and hydrogenating waste lubricating oil into lubricating oil base oil or blending components. Background technique [0002] my country's lubricating oil production accounts for about 2% of the total petroleum products, more than 4 million tons per year, and is increasing year by year. Lubricating oil will gradually age and deteriorate due to high temperature and air oxidation during use. At the same time, the viscosity of lubricating oil will decrease due to the intrusion of gasoline and molecular chain scission. Coupled with the metal powder worn off on the friction parts, the moisture in the oil due to respiration and other reasons, and the impurities intruded in the environment, not only pollute the oil, but also promote the oxidation of the lubricating oil. As a result, the color of the lubricating oil gradually becomes darker,...

Claims

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Application Information

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IPC IPC(8): C10M175/00C10G45/08
Inventor 姚光明罗继刚何清玉杨开财张笑剑
Owner 京福马(北京)石油化工高新技术有限公司
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