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Hydrogenation regeneration method of waste lubricating oil

A waste lubricating oil, hydrogenation regeneration technology, applied in the direction of lubricating composition, hydrogenation treatment process, petroleum industry, etc., can solve the problems of poor adaptability, ineffective utilization, mixed sources of waste lubricating oil, etc., to improve the operating life, The effect of reducing yield loss and utilizing high yield

Active Publication Date: 2018-07-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only removes some mechanical impurities through physical methods and hydrogenation protective agents. The removal of colloids and asphaltene in the heavy fraction of waste lubricating oil is limited, and the operation cycle cannot be guaranteed; at the same time, due to the mixed sources of waste lubricating oil, hydrogenation alone When refined, the product quality is not high and depends heavily on the quality of the raw material
[0006] Distillation-hydrofining type, the heavy fraction cannot be processed, not effectively utilized, and the product quality is not high, strong dependence on raw materials, poor adaptability

Method used

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  • Hydrogenation regeneration method of waste lubricating oil
  • Hydrogenation regeneration method of waste lubricating oil
  • Hydrogenation regeneration method of waste lubricating oil

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Experimental program
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Embodiment approach

[0040] Such as figure 1 As shown, the process flow of the method of the present invention is as follows: first, the waste lubricating oil raw material 1 enters the pretreatment unit 2 for electric desalination operation, and removes trace water, inorganic chloride ions and sodium, calcium, magnesium, iron contained in the waste lubricating oil raw material Metal impurities, such as metal impurities, the raw material oil salt content after electric desalting treatment is required to be less than 3ppm. The material desalted by the pretreatment unit enters the flash tower 3, and after flashing, the light components at the top of the flash tower and the materials at the bottom of the tower are filtered and then enter the ebullating bed reactor 4 for hydrogenation pretreatment reaction, and the reaction processed products enter Separation and fractionation unit 5 to obtain gas, liquid fraction and residue; wherein the residue is circulated back to ebullated bed reactor 4 for proces...

Embodiment 1

[0063] Prepare 700 solid sodium aluminate to a concentration of 200gAl 2 o 3 / L concentrated sodium aluminate solution, then diluted to a concentration of 35gAl 2 o 3 / L sodium aluminate working solution (a), take SiO 2 28wt% sodium silicate solution, then diluted to a concentration of 150gSiO 2 / L sodium silicate working solution 2L (b). Take a 30L steel plastic tank, open the container valves containing (a) and (b) respectively, and ventilate and feed CO with a concentration of 45v% at the same time 2 Gas, set the flow rate of (a) and (b) so that the reaction time is 1 hour, and quickly adjust the CO 2 flow rate, keep the pH of the system at about 10.0, and the reaction temperature is 30°C. After the reaction of (a) and (b) is completed, stop feeding CO 2 , and then the ventilation was stable for 40 minutes, and the slurry was filtered and washed with 85°C deionized water until neutral. Dry at 120°C for 8 hours, crush and sieve to obtain amorphous silica-alumina GL. ...

Embodiment 2

[0065] Get 80g silicon aluminum GL, 30g modified Y zeolite (SiO 2 / Al 2 o 3 40, unit cell constant 2.432nm, infrared acidity 0.19mmol / g specific surface 866m 2 / g, pore volume 0.52ml / g) and 250g adhesive made by peptizing nitric acid and SB alumina, kneading, rolling, making extrudable paste, extruding into strips. Carrier A was obtained by drying at 110°C for 6 hours and calcining at 550°C for 4 hours. Then 80 g of A was impregnated with 200 ml of a Mo-Mi co-impregnation solution in excess for 2 hours, dried at 110° C. for 6 hours, and calcined at 500° C. for 4 hours to obtain hydrogenation upgrading catalyst A. The physical properties of the hydrogenation upgrading catalyst are shown in Table 2.

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Abstract

The invention discloses a hydrogenation regeneration method of waste lubricating oil, which comprises the following contents: the waste lubricating oil enters a flash tower after being electrically desalted to separate dissolved water and part of light oil, and the material at the bottom of the tower enters a fluidized bed reactor for hydrogenation Pretreatment reaction: after the liquid fraction obtained by separation of the reaction effluent is mixed with hydrogen, it enters the hydrotreating reaction zone, the hydrotreating effluent enters the hydrogenation upgrading reaction zone, and the obtained hydrogenation upgrading effluent enters the hydrogenation supplementary refining In the reaction zone, hydrogenation supplementary refining reaction is carried out, and the hydrogenation supplementary refining product is separated to obtain lubricating oil base oil. Compared with the prior art, the method of the present invention can process the whole distillate of waste lubricating oil, and the lubricating oil base oil product has high yield and good quality, and at the same time can ensure long-term stable operation of the device and realize efficient utilization of waste lubricating oil resources.

Description

technical field [0001] The invention relates to a hydrogenation regeneration method of waste lubricating oil, in particular to a method for producing lubricating oil base oil by using the whole distillate of waste lubricating oil as a raw material and adopting a multi-stage hydrogenation process. Background technique [0002] During the use of lubricating oil, due to contact with metal and under the influence of pressure, temperature, electromagnetic field, light and other factors, it will be subject to mechanical shear for a long time, which will produce a series of physical and chemical changes. With the prolongation of service time, asphalt colloidal substances, carbon black and organic acids, salts, water, metal powder and other foreign impurities in the oil gradually accumulate, resulting in the decline of the physical and chemical properties of the oil, the color of the lubricating oil becomes darker, and the acid value increases , resulting in precipitation, sludge, p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M175/00C10G67/02
Inventor 赵威全辉姚春雷张志银孙国权林振发
Owner CHINA PETROLEUM & CHEM CORP
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