Hydrogenation method for regenerating waste lubricating oil,

A technology for waste lubricating oil and hydrogenation regeneration, which is used in lubricating compositions, hydrotreating processes, petroleum industry, etc., can solve the problems of poor adaptability, no effective utilization, and low product quality, and achieves improved operating life and high yield. The utilization of yield and the effect of reducing yield loss

Active Publication Date: 2016-07-06
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 lubricat...

Method used

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  • Hydrogenation method for regenerating waste lubricating oil,
  • Hydrogenation method for regenerating waste lubricating oil,
  • Hydrogenation method for regenerating waste lubricating oil,

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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 present invention discloses a hydrogenation method for regenerating waste lubricating oil. The method includes the following steps: conducting electro-desalting on waste lubricating oil, sending the waste lubricating oil into a flash column, separating dissolving water and part of light oil, sending the bottom materials into a fluidized bed reactor, and conducting hydrogenation pretreatment reaction; separating reaction effluents, mixing an obtained liquid fraction with hydrogen, sending the mixture into a hydrotreating reaction zone, sending an effluent from the hydrotreating reaction zone into a hydrogenation modification reaction zone, sending a hydrogenation modification effluent into a hydrogenation supplement refining reaction zone, carrying out hydrogenation supplement refining reaction; and isolating the hydrogenation supplement refining products to obtain base oil for lubricating oil. Compared with the prior art, the method of the present invention can treat whole fraction of waste lubricating oil; the base oil product for lubricating oil has high yield and good quality; and the method can ensure a long-term stable operation of a device, and achieve 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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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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