CN111019749A - Device for regenerating deep-drawing base oil from waste lubricating oil and using method thereof - Google Patents
Device for regenerating deep-drawing base oil from waste lubricating oil and using method thereof Download PDFInfo
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- CN111019749A CN111019749A CN201911296349.3A CN201911296349A CN111019749A CN 111019749 A CN111019749 A CN 111019749A CN 201911296349 A CN201911296349 A CN 201911296349A CN 111019749 A CN111019749 A CN 111019749A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
- C10M175/0033—Working-up used lubricants to recover useful products ; Cleaning by thermal processes using distillation processes; devices therefor
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Abstract
The invention discloses a device for regenerating deep-drawing base oil by using waste lubricating oil, which comprises: the system comprises a deep drawing tower, a molten salt heater, a refrigeration system, a vacuum unit, a feeding device, an oil storage tank and an asphaltene storage tank; wherein, the deep-drawing tower comprises a tower body, and a flash column plate, an oil collecting tank, a rectifying column plate and a reflux device are sequentially arranged from bottom to top; the first input end of the tower body is connected with the output end of the feeding device, the second input end of the tower body is connected with the output end of the molten salt heater, the first output end of the tower body is connected with the input end of the refrigeration system, the second output end of the tower body is connected with the oil storage tank, the third output end of the tower body is connected with the input end of the molten salt heater, and the fourth output end of the tower body is connected with the asphaltene storage tank; the output end of the refrigeration system is connected with the input end of the vacuum unit. The device and the process can extract the heavy base oil which is difficult to recover by common reduced pressure distillation, thereby improving the comprehensive utilization rate of the waste lubricating oil, saving energy, protecting environment and facilitating industrial continuous production.
Description
Technical Field
The invention relates to the technical field of lubricating oil processing, in particular to a device for regenerating deep-drawing base oil from waste lubricating oil and a using method thereof.
Background
The lubricating oil is a liquid or semisolid lubricating agent used on various types of automobiles and mechanical equipment to reduce friction and protect machines and workpieces, and mainly plays roles in lubrication, auxiliary cooling, rust prevention, cleaning, sealing, buffering and the like.
The lubricating oil is gradually aged and deteriorated due to high temperature and air oxidation during use. The metal powder abraded by the friction part and the moisture and impurities entering the lubricating oil from the outside can also play a role in catalyzing the oxidation of the lubricating oil, so that the color of the lubricating oil gradually becomes darker in the use process, the acid value is increased, and precipitates, oil sludge and paint films can be generated and deposited on the surface of the friction part and pores and filters through which the lubricating oil flows, and various faults of the machine can be caused. Meanwhile, under the combined action of the acidic substance and the peroxide, the metal corrosion speed is accelerated, so that the lubricating oil can gradually deteriorate in the using process and needs to be replaced after a certain time.
The waste lubricating oil can cause serious pollution to soil, water source environment no matter being burned, buried or discharged into rivers and the like. Because the waste lubricating oil contains a plurality of toxic substances, if the waste lubricating oil is poured into soil, plants can die, and microorganisms in the polluted soil are killed; if the blood flows into a human body, cells lose normal functions, so that canceration and sudden lesion are caused; if the lubricating oil enters a drinking water source, 1 liter of waste lubricating oil causes pollution of 100 thousands of liters of water, and the 100 thousands of liters of water is equivalent to the water consumption of 1 year of 10 families. Therefore, with the increasing environmental demands of human beings, the recycling of used lubricating oils is also receiving more and more attention from countries around the world. In China, along with the increasing severity of environmental pollution of soil and water sources, the nation pays more attention to ecological environment protection and living environments of people, and the comprehensive recycling of waste lubricating oil is also the embodiment of reducing environmental pollution of soil, water sources and the like and promoting the healthy development of the national ecological environment.
The proposal of the waste lubricating oil regeneration technology has important economic and social benefits for solving the practical problems of recycling of waste lubricating oil, energy shortage and the like in China, promoting the comprehensive recycling of national resources, developing circular economy, forming a closed-loop industrial chain, fighting fake and inferior oil products, purifying the oil product market, reducing environmental pollution, promoting the sustainable development of ecological environment and the like.
The regeneration technology of the waste lubricating oil widely adopted in China at present basically remains separation technologies such as kettle distillation, molecular short-path distillation, thin film evaporation technology and the like, although the technologies have certain industrialized effects, the comprehensive recycling efficiency of the waste lubricating oil is low and is only 60% -70% generally, and secondary waste and pollution of resources still exist.
The reasons for the low yield of base oil in the above method may be various, but one of the main reasons is that in the distillation process of the waste lubricating oil, a part of heavy components is cracked when the temperature is high, and the heavy components cannot be pulled out when the temperature is low. The application of the deep drawing process for regenerating the waste lubricating oil can greatly solve the problem.
However, at present, domestic applications of deep drawing processes of waste lubricating oil are few, and one deep drawing technology adopts a steam stripping and ultrasonic method, so that the technical theory is better in application, but the method has defects in practical application, such as steam stripping reduces oil-gas partial pressure, but greatly influences vacuum degree, thereby influencing the deep drawing effect; ultrasonic waves have a stirring action, but the deep drawing effect is limited.
Therefore, how to efficiently realize the regeneration of deep-drawing base oil from waste lubricating oil is a problem which needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a device for regenerating deep-drawing base oil from waste lubricating oil and a using method thereof. The device and the process are simple and practical, no secondary pollution is generated, the reaction temperature in the deep drawing process and the coking reaction of oil products are reduced by improving the vacuum degree of the deep drawing system, and heavy base oil which is difficult to recover in common reduced pressure distillation can be extracted, so that the comprehensive utilization rate of waste lubricating oil is improved, and meanwhile, the device is energy-saving, environment-friendly and convenient for industrial continuous production.
In order to achieve the purpose, the invention adopts the following technical scheme:
a device for regenerating deep-drawing base oil by using waste lubricating oil comprises: the system comprises a deep drawing tower, a molten salt heater, a refrigeration system, a vacuum unit, a feeding device, an oil storage tank and an asphaltene storage tank;
the deep drawing tower comprises: the device comprises a tower body, a flash tower plate, an oil collecting tank, a rectifying tower plate and a reflux device; a flash evaporation tower plate, an oil collecting tank, a rectification tower plate and a reflux device are sequentially arranged in the tower body from bottom to top;
the tower body is positioned between the flash tower plate and the oil collecting tank and is provided with a first input end which is connected with the output end of the feeding device;
the tower body is provided with a second input end below the flash tower plate and is connected with the output end of the molten salt heater;
the tower body is positioned above the reflux device and is provided with a first output end which is connected with the input end of the refrigeration system;
the tower body is provided with a second output end at the position of the oil collecting groove and is connected with the oil storage tank;
the tower body is also provided with a third output end below the flash tower plate and is connected with the input end of the molten salt heater,
the tower body is also provided with a fourth output end below the flash tower plate and is connected with an asphaltene storage tank;
the output end of the refrigeration system is connected with the input end of the vacuum unit.
Further, still include the base oil circulating pump, the input of base oil circulating pump is connected with the second output of deep-drawing tower, and first output is connected with the oil storage tank, and the second output is connected with reflux unit.
Adopt above-mentioned further beneficial effect to lie in, the base oil circulating pump is arranged in transporting to the oil storage tank with deep-drawn base oil partly in the deep-drawing tower and stores, and another part is transported to reflux unit and is heavily returned the deep-drawing tower and carry out the backward flow to improve the quality of base oil.
Further, still include the fused salt circulating pump, the input of fused salt circulating pump is connected with the third output of deep-drawing tower, and the output is connected with the input of fused salt heater.
The molten salt circulating pump is used for circulating the molten salt between the molten salt heater and the deep-drawing tower so as to ensure that the residual oil after flash evaporation in the deep-drawing tower is circularly supplied with heat.
And the input end of the asphaltene pump is connected with the fourth output end of the deep drawing tower, and the output end of the asphaltene pump is connected with the asphaltene storage tank.
The asphalt pump has the further beneficial effects that the asphalt pump is used for pumping the asphalt generated in the deep drawing process and conveying the asphalt to the asphalt storage tank.
Further, the system also comprises a boiler, and the boiler is connected with the output end of the vacuum unit.
The further beneficial effect of the method is that the non-condensable gas is discharged from the top of the tower, is further cooled by the refrigerating system, then enters the vacuum unit, and is conveyed to the boiler so as to keep the deep-drawing high vacuum and reduce the influence of the non-condensable gas on the deep-drawing process.
Further, the feeding device is a decompression tower.
A use method of a device for regenerating deep-drawing base oil from waste lubricating oil specifically comprises the following steps:
(1) operating a refrigeration system and a vacuum unit to realize high vacuum of the deep drawing tower, wherein the pressure is 30-100 pa;
(2) conveying residual oil output from an output end of a feeding device (a vacuum tower) to a deep drawing tower through a first input end of the deep drawing tower, and then carrying out flash evaporation through a flash evaporation tower plate;
(3) operating a molten salt heater and a molten salt circulating pump, heating to 320-380 ℃ (preferably 330 ℃), and then circularly supplying heat to the residue oil after flash evaporation in the deep drawing tower;
(4) the component flowing into the oil collecting tank after being rectified by the rectifying tower plate is base oil (400SN), under the action of a base oil circulating pump, one part of the base oil is conveyed to the oil storage tank, and the other part of the base oil is conveyed to a reflux device for reflux;
(5) noncondensable gas generated in the deep drawing process is conveyed to a boiler through a refrigeration system and a high vacuum group in sequence;
(6) and the asphaltene generated in the deep drawing process is conveyed to the asphaltene storage tank through the fourth output end of the deep drawing tower under the action of the asphaltene extracting pump, and can be used as a waterproof material after being cooled.
Further, in the step (2), the residual oil output from the output end of the feeding device can be preheated by the heat conducting oil and then conveyed to the deep drawing tower through the first input end of the deep drawing tower.
The further beneficial effects of the adoption of the method are that the heat conduction oil is preheated, so that the heat efficiency can be increased, the retention time of residual oil in the deep-drawing tower is reduced, the cracking of lubricating oil is lightened, the product quality can be improved, and the yield can be improved.
According to the technical scheme, compared with the prior art, the invention discloses and provides a device for regenerating deep-drawing base oil from waste lubricating oil and a using method thereof, and the device has the following beneficial effects:
the device and the process of the invention adopt a mode of fused salt heating and high vacuum to deeply draw heavy components in the waste lubricating oil, and utilize fused salt to circularly heat the vacuum residue in the deep-drawing tower, and simultaneously cooperate with a high vacuum unit and a refrigeration system to ensure that the deep-drawing tower achieves a very high vacuum and the heavy base oil which achieves 400SN base oil is deeply drawn out. The device and the process provided by the invention can reduce the operation temperature of a deep drawing system and reduce the cracking and coking processes of oil products in the deep drawing process, thereby deeply drawing heavy base oil with higher economic value and effectively improving the yield of regenerated base oil products.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a device for regenerating deep-drawing base oil from waste lubricating oil according to the present invention;
FIG. 2 is a flow chart of a process for regenerating a deep-drawing base oil from a used lubricating oil according to the present invention;
in figure 1, 1-tower, 2-molten salt heater, 3-refrigeration system, 4-vacuum unit, 5-feeding device (decompression tower), 6-boiler, 7-oil storage tank, 8-asphaltene storage tank, 9-flash tower plate, 10-oil collecting tank, 11-rectification tower plate, 12-reflux device, 13-base oil circulating pump, 14-molten salt circulating pump, 15-asphaltene extraction pump.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment of the invention discloses a device for regenerating deep-drawing base oil by using waste lubricating oil, which comprises: the system comprises a deep drawing tower 1, a molten salt heater 2, a refrigeration system 3, a high altitude unit 4, a feeding device 5, an oil storage tank 7 and an asphaltene storage tank 8; wherein, the deep drawing tower includes: the device comprises a tower body 1, a flash tower plate 9, an oil collecting tank 10, a rectification tower plate 11 and a reflux device 12; a flash evaporation tower plate 9, an oil collecting tank 10, a rectification tower plate 11 and a reflux device 12 are sequentially arranged in the tower body 1 from bottom to top; the tower body 1 is arranged between the flash tower plate 9 and the oil collecting tank 10 and is provided with a first input end which is connected with the output end of the feeding device 5; the tower body 1 is provided with a second input end below the flash tower plate 9 and is connected with the output end of the molten salt heater 2; the tower body 1 is provided with a first output end above the reflux device 12 and is connected with the input end of the refrigeration system 3; the tower body 1 is provided with a second output end at the position of the oil collecting tank 10 and is connected with the oil storage tank 7; the tower body 1 is also provided with a third output end below the flash tower plate 9 and is connected with the input end of the molten salt heater 2, and the tower body 1 is also provided with a fourth output end below the flash tower plate 9 and is connected with the asphaltene storage tank 8; the output end of the refrigerating system 3 is connected with the input end of the high-altitude unit 4. The invention can extract the heavy base oil which is difficult to recover by common reduced pressure distillation by improving the vacuum degree of the deep drawing system, reducing the reaction temperature and the coking reaction of oil products in the deep drawing process, thereby improving the comprehensive utilization rate of the waste lubricating oil, saving energy, protecting environment and being convenient for industrialized continuous production.
In one embodiment, the deep draw column 1 comprises a flash tray 9, an oil sump 10, a rectification tray 11 and a reflux device 12; wherein, the flash column plate 9, the oil collecting tank 10, the rectifying column plate 11 and the reflux device 12 are arranged inside the deep drawing tower 1 from bottom to top in sequence.
In one embodiment, the system further comprises a base oil circulating pump 13, wherein an input end of the base oil circulating pump 13 is connected with a second output end of the deep drawing tower 1, a first output end of the base oil circulating pump is connected with the oil storage tank 7, and a second output end of the base oil circulating pump is connected with the reflux device 12. The base oil circulating pump 13 is used for conveying one part of the base oil from the deep drawing tower 1 to the oil storage tank 7 for storage, and conveying the other part of the base oil to the reflux device 12 to be refluxed to the deep drawing tower 1 again so as to improve the quality of the base oil.
In one embodiment, a molten salt circulating pump 14 is further included, and an input end of the molten salt circulating pump 14 is connected with a third output end of the deep drawing tower 1, and an output end is connected with an input end of the molten salt heater 2. The molten salt circulating pump 14 is used for circulating the molten salt between the molten salt heater 2 and the deep-drawing tower 1 so as to ensure that the residual oil after flash evaporation in the deep-drawing tower 1 is circularly supplied with heat.
In one embodiment, an asphaltene withdrawal pump 15 is included, the input of the asphaltene withdrawal pump 15 being connected to a fourth output of the deep drawing column 1, the output being connected to the asphaltene storage tank 8. The asphaltene pump 15 is used to pump off the asphaltenes produced during the deep drawing and to deliver them to the asphaltene storage tank 8.
In one embodiment, the system further comprises a boiler 6, and the boiler 6 is connected with the output end of the high altitude machine set 4. The non-condensable gas is discharged from the top of the tower, is further cooled by a refrigerating system 3, then enters a vacuum unit 4, and is conveyed to a boiler 6 so as to keep the deep-drawing high vacuum and reduce the influence of the non-condensable gas on the deep-drawing process.
Example 1
The using method of the device for regenerating the deep-drawing base oil by using the waste lubricating oil comprises the following steps:
(1) the refrigeration system 3 and the high vacuum unit 4 are operated to realize the high vacuum of the deep drawing tower 1, and the pressure is 20 pa;
(2) residual oil output from the output end of a feeding device (a vacuum tower) 5 is preheated by heat conducting oil and then is conveyed to a deep drawing tower 1 through a first input end of the deep drawing tower 1, and then is flashed through a flash tower plate 9;
(3) operating a molten salt heater 2 and a molten salt circulating pump 14, heating to 330 ℃, and performing circulating heat supply on the residue after flash evaporation in the deep-drawing tower 1;
(4) the component flowing into the oil collecting tank 10 after being rectified by the rectifying tower plate 11 is base oil (400SN), under the action of a base oil circulating pump 13, one part of the base oil is conveyed to the oil storage tank 7, and the other part of the base oil is conveyed to the reflux device 12 for reflux;
(5) noncondensable gas generated in the deep drawing process is conveyed to a boiler 6 through a refrigeration system 3 and a high vacuum group in sequence;
(6) the asphaltenes produced in the deep drawing process are conveyed to the asphaltene storage tank 8 through the fourth output end of the deep drawing tower 1 under the action of the asphaltene extraction pump 15, and can be used as waterproof materials after being cooled.
Example 2
The using method of the device for regenerating the deep-drawing base oil by using the waste lubricating oil comprises the following steps:
(1) the refrigeration system 3 and the high vacuum unit 4 are operated to realize the high vacuum of the deep drawing tower 1, and the pressure is 30 pa;
(2) residual oil output from the output end of a feeding device (a vacuum tower) 5 is conveyed to a deep drawing tower 1 through a first input end of the deep drawing tower 1, and then is subjected to flash evaporation through a flash evaporation tower plate 9;
(3) operating a molten salt heater 2 and a molten salt circulating pump 14, heating to 300 ℃, and performing circulating heat supply on the residue after flash evaporation in the deep-drawing tower 1;
(4) the component flowing into the oil collecting tank 10 after being rectified by the rectifying tower plate 11 is base oil (400SN), under the action of a base oil circulating pump 13, one part of the base oil is conveyed to the oil storage tank 7, and the other part of the base oil is conveyed to the reflux device 12 for reflux;
(5) noncondensable gas generated in the deep drawing process is conveyed to a boiler 6 through a refrigeration system 3 and a high vacuum group in sequence;
(6) the asphaltenes produced in the deep drawing process are conveyed to the asphaltene storage tank 8 through the fourth output end of the deep drawing tower 1 under the action of the asphaltene extraction pump 15, and can be used as waterproof materials after being cooled.
Example 3
The using method of the device for regenerating the deep-drawing base oil by using the waste lubricating oil comprises the following steps:
(1) the refrigeration system 3 and the high vacuum unit 4 are operated to realize the high vacuum of the deep drawing tower 1, and the pressure is 100 pa;
(2) residual oil output from the output end of a feeding device (a vacuum tower) 5 is conveyed to a deep drawing tower 1 through a first input end of the deep drawing tower 1, and then is subjected to flash evaporation through a flash evaporation tower plate 9;
(3) operating a molten salt heater 2 and a molten salt circulating pump 14, heating to 350 ℃, and performing circulating heat supply on the residue after flash evaporation in the deep-drawing tower 1;
(4) the component flowing into the oil collecting tank 10 after being rectified by the rectifying tower plate 11 is base oil (400SN), under the action of a base oil circulating pump 13, one part of the base oil is conveyed to the oil storage tank 7, and the other part of the base oil is conveyed to the reflux device 12 for reflux;
(5) noncondensable gas generated in the deep drawing process is conveyed to a boiler 6 through a refrigeration system 3 and a high vacuum group in sequence;
(6) the asphaltenes produced in the deep drawing process are conveyed to the asphaltene storage tank 8 through the fourth output end of the deep drawing tower 1 under the action of the asphaltene extraction pump 15, and can be used as waterproof materials after being cooled.
Performance detection
Test group (the specific procedure is the same as in example 1): 200g of waste lubricating oil after flocculation dehydration is adopted, in order to improve the vacuum pressure in a kettle, steam stripping is not used, a high vacuum unit is adopted, a freezing water system is assisted at the front section of the high vacuum unit, the maximum vacuum pressure in the kettle is 20pa, the temperature of the waste lubricating oil is raised to 330 ℃, heating and quenching are stopped, and the obtained product and the amount of residues in the kettle are shown in the following table 1.
Control group 1: 200g of the waste lubricating oil after flocculation dehydration is used, and a reduced pressure distillation device is used for cutting fractions. And (3) distilling the waste lubricating oil under reduced pressure by adopting the highest achievable vacuum pressure during distillation, comparing the distillate oil and the residual slag oil quantity at the bottom of the kettle, and distilling the distillate oil and the residual slag oil quantity at the bottom of the kettle under the conditions of no freezing water assistance and matching with the freezing water assistance.
The vacuum distillation device is a simple kettle type atmospheric and vacuum distillation device, only the top gas of the kettle and one lateral line have the reflux ratio of 5:1, and the temperature of the kettle does not exceed 350 ℃; and after the reaction is finished, stopping heating, quenching to prevent the product from continuing to react, reducing the temperature to be below 100 ℃, and taking out the product for liquid separation detection.
Ordinary atmospheric and vacuum distillation and steam stripping are adopted, the vacuum pressure in the kettle is 1000pa at most, the temperature of the waste lubricating oil is raised to 330 ℃, heating and quenching are stopped, and the obtained product and the amount of residues in the kettle are shown in the following table 1.
And in the comparison group 2, 200g of the flocculated and dehydrated waste lubricating oil is adopted, in order to improve the vacuum pressure in the kettle, no steam stripping is used, only a high-vacuum unit is adopted, the maximum vacuum pressure in the kettle is 300pa, the temperature of the waste lubricating oil is raised to 330 ℃, the heating and the quenching are stopped, and the obtained product and the amount of residues in the kettle are shown in the following table 1.
TABLE 1 products and amount of residue in kettle obtained from test group, control group 1 and control group 2
| Item | Kettle top oil (%) | Side line (%) | Residual oil (%) | Highest vacuum (pa) |
| Test group (non-stripping + freezing auxiliary) | 4.87 | 81.97 | 13.16 | 20 |
| Control group 1 (stripping) | 5.16 | 66.58 | 28.26 | 1000 |
| Control 2 (No stripping) | 4.32 | 76.41 | 19.27 | 300 |
As can be seen from Table 1, the used lubricating oil, after being treated by the process for regenerating a deep drawing base oil from the used lubricating oil of the present invention, has a smaller amount of still top oil and residual oil, a larger side line and a smaller maximum vacuum degree, as compared with the prior art (control 1 and control 2).
The tests prove that the device and the process for regenerating the deep-drawing base oil from the waste lubricating oil can reduce the cracking and coking processes of oil products in the deep-drawing process, thereby deeply drawing heavy base oil with higher economic value and effectively improving the yield of regenerated base oil products.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a useless lubricating oil regeneration deep-drawing base oil device which characterized in that includes: the system comprises a deep drawing tower, a molten salt heater, a refrigeration system, a vacuum unit, a feeding device, an oil storage tank and an asphaltene storage tank;
the deep drawing tower comprises: the device comprises a tower body, a flash tower plate, an oil collecting tank, a rectifying tower plate and a reflux device; the flash tower plate, the oil collecting tank, the rectifying tower plate and the reflux device are sequentially arranged in the tower body from bottom to top;
the tower body is provided with a first input end between the flash tower plate and the oil collecting tank and is connected with the output end of the feeding device;
the tower body is provided with a second input end below the flash tower plate and is connected with the output end of the molten salt heater;
the tower body is provided with a first output end above the reflux device and is connected with the input end of the refrigeration system;
the tower body is provided with a second output end at the position of the oil collecting tank and is connected with the oil storage tank;
the tower body is also provided with a third output end below the flash tower plate and connected with the input end of the molten salt heater,
the tower body is also provided with a fourth output end below the flash tower plate and is connected with the asphaltene storage tank;
and the output end of the refrigerating system is connected with the input end of the vacuum unit.
2. The apparatus for regenerating deep drawing base oil from used lubricating oil according to claim 1, further comprising a base oil circulating pump, an input end of the base oil circulating pump being connected to the second output end of the deep drawing tower;
the first output end of the base oil circulating pump is connected with the oil storage tank, and the second output end of the base oil circulating pump is connected with the reflux device.
3. The apparatus of claim 1, further comprising a molten salt circulating pump, wherein an input end of the molten salt circulating pump is connected to the third output end of the deep drawing tower, and an output end of the molten salt circulating pump is connected to the input end of the molten salt heater.
4. The apparatus of claim 1, further comprising an asphaltene pump, wherein an input end of the asphaltene pump is connected to the fourth output end of the deep drawing tower, and an output end of the asphaltene pump is connected to the asphaltene storage tank.
5. The apparatus for regenerating deep drawing base oil from used lubricating oil according to claim 1, further comprising a boiler connected to an output of the vacuum unit.
6. The apparatus for regenerating deep drawing base oil from used lubricating oil according to claim 1, wherein the apparatus is a vacuum tower.
7. The use method of the device for regenerating the deep drawing base oil from the used lubricating oil according to any one of claims 1 to 6 is characterized by comprising the following steps:
(1) operating a refrigeration system and a vacuum unit to realize high vacuum of the deep drawing tower;
(2) residual oil output from the output end of the feeding device is conveyed to the tower body through the first input end of the deep drawing tower and is subjected to flash evaporation through a flash evaporation tower plate;
(3) operating a molten salt heater and a molten salt circulating pump to circularly supply heat to the residual oil subjected to flash evaporation in the flash tower;
(4) the base oil which flows into the oil collecting tank after being rectified by the rectifying tower plate passes through a second output end of the deep drawing tower under the action of a base oil circulating pump, one part of the base oil is conveyed to the oil storage tank, and the other part of the base oil is conveyed to the reflux device for reflux;
(5) noncondensable gas generated in the deep drawing process is conveyed to a boiler through a refrigeration system and a high vacuum group in sequence;
(6) and the asphaltene generated in the deep drawing process is conveyed to the asphaltene storage tank through the fourth output end of the deep drawing tower under the action of the asphaltene extracting pump.
8. The method for using the device for regenerating the deep drawing base oil from the used lubricating oil according to claim 7, wherein in the step (1), the pressure of the high vacuum is 30-100 pa.
9. The method for using a device for regenerating deep drawing base oil from waste lubricating oil according to claim 7, wherein in the step (2), the residual oil output from the output end of the feeding device is preheated by the heat transfer oil, then is conveyed to the deep drawing tower through the first input end of the deep drawing tower, and then is flashed through the flash tower plate.
10. The use method of the device for regenerating the deep drawing base oil from the used lubricating oil according to claim 7, wherein in the step (3), the heating temperature of the molten salt heater is 320-380 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911296349.3A CN111019749A (en) | 2019-12-16 | 2019-12-16 | Device for regenerating deep-drawing base oil from waste lubricating oil and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911296349.3A CN111019749A (en) | 2019-12-16 | 2019-12-16 | Device for regenerating deep-drawing base oil from waste lubricating oil and using method thereof |
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| Publication Number | Publication Date |
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| CN111019749A true CN111019749A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911296349.3A Withdrawn CN111019749A (en) | 2019-12-16 | 2019-12-16 | Device for regenerating deep-drawing base oil from waste lubricating oil and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114225451A (en) * | 2021-12-23 | 2022-03-25 | 安徽国孚生态工程技术有限公司 | Waste lubricating oil circulating heat storage distillation device and method |
-
2019
- 2019-12-16 CN CN201911296349.3A patent/CN111019749A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114225451A (en) * | 2021-12-23 | 2022-03-25 | 安徽国孚生态工程技术有限公司 | Waste lubricating oil circulating heat storage distillation device and method |
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