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A combined regeneration method for producing high-grade lubricating oil products from waste lubricating oil

A waste lubricating oil and lubricating oil technology, which is applied in the petroleum industry, hydrocarbon oil treatment, hydrogenation process, etc., can solve the problems of low product performance, high cost, complicated waste lubricating oil treatment methods, etc., and achieve good product properties , high added value, and more insolubles

Active Publication Date: 2016-12-07
NINGBO ZHONGXUN ENVIRONMENTAL TECH CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a combined regeneration method for producing high-grade lubricating oil products from waste lubricating oil, which solves the problems of the existing waste lubricating oil treatment methods such as complexity, high cost, and poor product performance.

Method used

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  • A combined regeneration method for producing high-grade lubricating oil products from waste lubricating oil
  • A combined regeneration method for producing high-grade lubricating oil products from waste lubricating oil
  • A combined regeneration method for producing high-grade lubricating oil products from waste lubricating oil

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preparation example Construction

[0029] The preparation method of the used Pt-Pd catalyst of the present invention:

[0030] Using ZSM-5 molecular sieve as the carrier, take an appropriate amount of solution containing Pt and Pd, impregnate the carrier by equal volume impregnation method, place it at room temperature for 12 hours after impregnation, then dry it at 110°C for 6 hours, and roast it at 500°C for 6 hours to finally get Pt-Pd / Al 2 o 3 The catalyst, wherein the mass fraction of Pt and Pd on the catalyst can be adjusted by the amount of metal in the solution containing Pt and Pd.

[0031]The details are as follows: impregnate 100g of ZSM-5 molecular sieve with 50ml of Pt 0.3g / 100ml and Pd 0.8g / 100ml aqueous solution, place it at room temperature for 12h after impregnation, then dry at 110°C for 6h, and roast at 500°C for 6h to finally get the Pt-Pd catalyst , wherein the loading of Pt is 0.15w%, and the loading of Pd is 0.4w% of the catalyst. γ-Al 2 o 3 Specific surface area ≥ 180m 2 / g, the p...

Embodiment 1

[0038] According to the above process, combined with specific waste lubricating oil, the reaction is carried out, and the specific conditions are as follows: hydrofining reaction temperature 340°C, reaction pressure 18.0MPa, hydrogen-oil ratio 1000:1, fresh raw material space velocity 1.0h -1 , the first catalyst is Mo-W / γ-Al 2 o 3 , NiO in the catalyst is 3.6w%, MoO 3 is 23.2w%, and the amount of catalyst added is 500 μg of the first catalyst / g<500°C fraction;

[0039] Isomerization decondensation reaction: temperature 300°C, reaction pressure 12MPa, hydrogen-oil ratio 800:1, feed space velocity 2.0h -1 , the loading of Pt in the second catalyst is 0.15w%, the loading of Pd is 0.4w% of the catalyst, and the addition amount is 50 μg of the second catalyst / g<500 ° C fraction, the specific data are as follows:

[0040] (1) Raw material properties of waste lubricating oil (accounting for total feed)

[0041] project

[0042] Ni

[0043] Total tetr...

Embodiment 2

[0052] According to the above process, combined with specific waste lubricating oil, the reaction is carried out. The specific conditions are as follows: hydrofining reaction temperature 360 ​​° C, reaction pressure 15.0 MPa, hydrogen-oil ratio 600:1, fresh raw material space velocity 0.5h -1 , the first catalyst is Mo-W / γ-Al 2 o 3 , WO in the catalyst 3 26.8w%, MoO 3 is 24.2w%, and the amount of catalyst added is 1000 μg of the first catalyst / g<500°C fraction;

[0053] Isomerization decondensation reaction: temperature 340°C, reaction pressure 8MPa, hydrogen-oil ratio 1000:1, feed space velocity 0.8h -1 , the loading of Pt in the second catalyst is 0.4w%, the loading of Pd is 0.3w% of the catalyst, and the addition amount is 100 μg of the second catalyst / g<500 ° C fraction, the specific data are as follows:

[0054] Table 1 Raw material properties of waste lubricating oil <500℃ distillate

[0055] project

[0056] Charcoal residue, w%

[0057] Materia...

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Abstract

The invention relates to a combining re-producing method for producing a top-grade lubricating oil product by using useless lubricating oil. The method comprises the following steps that firstly, fraction which is lower than 500 DEG C of the useless lubricating oil is excised through reduced pressure distillation, and the fraction which is higher than 500 DEG C is obtained; secondly, hydrogenation reaction is carried out on the fraction which is higher than 500 DEG C under the action of a catalyst, after gas-liquid separation is carried out, liquid is obtained and enters a normal pressure fractioning tower, shunting is carried out on the liquid, a naphtha is obtained on the top of the normal pressure fractioning tower, diesel is obtained in the middle of the normal pressure fractioning tower; thirdly, primary isomerism depressing reaction is carried out on a product at the bottom of the normal pressure fractioning tower under the action of a second catalyst, a product of the isomerism depressing reaction is subjected to the gas-liquid separation and flashing, and light oil and lubricating oil are obtained. According to the method, the distillate oil yield can be reached above 99%, the product quality is good, the high added value is high, and therefore the great generalization and application prospect is achieved.

Description

technical field [0001] The invention relates to a combined regeneration method for producing high-grade lubricating oil products from waste lubricating oil, which belongs to the oil upgrading process in petroleum processing technology. Background technique [0002] With the development of the economy and the increase of machinery and vehicles, the application of lubricating oil is becoming more and more extensive. Lubricating oil will deteriorate during the process of mechanical transmission and engine lubrication. For example, after the lubricating oil on cooling, transmission, heat treatment and other devices has been used for a period of time, the oil must be changed when the lubrication and its performance indicators decrease to a certain extent. A large amount of waste hydraulic oil, gear oil, and dirty oil from washing machine parts. These waste lubricating oils are often dumped directly as waste or burned as fuel, which not only causes a great waste of resources but ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
Inventor 邓文安李传李庶峰文萍杜峰
Owner NINGBO ZHONGXUN ENVIRONMENTAL TECH CO LLC
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