CN216703381U - Ultrahigh vacuum distillation tower for regeneration of waste lubricating oil - Google Patents
Ultrahigh vacuum distillation tower for regeneration of waste lubricating oil Download PDFInfo
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- CN216703381U CN216703381U CN202123296971.XU CN202123296971U CN216703381U CN 216703381 U CN216703381 U CN 216703381U CN 202123296971 U CN202123296971 U CN 202123296971U CN 216703381 U CN216703381 U CN 216703381U
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Abstract
The utility model discloses an ultrahigh vacuum distillation tower for waste lubricating oil regeneration, which comprises a tower body, wherein a vacuumizing port, a residual oil port and a feeding port are arranged on the tower body, a calandria distributor, a grid type filler, a regular filler and a collecting tank are sequentially arranged in the tower body from top to bottom, a hollow tower section is formed between the grid type filler and the regular filler, and the collecting tank is led out from the side edge of the tower body. The distillation tower has large empty tower volume ratio, mainly empty tower mixing condensation during evaporation, small pressure drop, minimum integral pressure drop by adopting a calandria distributor and grid type packing, low evaporation temperature, low energy consumption, effective prevention of cracking of base oil and improvement of the yield of the base oil, and can realize ultrahigh vacuum, wherein the vacuum degree of a gasification section in the tower is higher than 5 mmHg; in addition, the dual distribution of calandria distributor and grid-type packing can make the condensed liquid fall down uniformly, the regular packing can play the roles of buffering and gas distribution, the heat transfer in the tower is uniform, and the evaporation is thorough.
Description
Technical Field
The utility model relates to the technical field of waste lubricating oil distillation, in particular to an ultrahigh vacuum distillation tower for waste lubricating oil regeneration.
Background
The lubricating oil is composed of base oil and a certain amount of additives, and after the lubricating oil is used for a period of time, the normal function of the lubricating oil is lost due to the introduction of impurities, the deterioration of the additives and the like, so that the lubricating oil becomes waste lubricating oil. The waste lubricating oil contains saturated oil (light component base oil, for reason component) and unsaturated oil, and also contains impurities such as oil sludge, metal microparticles, carbon black, moisture, additives, degradation products and the like.
With the development of technology and the improvement of environmental protection requirements, the waste lubricating oil can be treated to obtain regenerated base oil, and the main process of the method is distillation, which is generally divided into steps of normal-pressure flash evaporation, reduced-pressure distillation, high-vacuum distillation and the like. At present, because distributor or filler structure set up unreasonablely in the distillation column that the high vacuum distillation of useless lubricating oil adopted, cause the pressure drop in the tower too big, even carry out high standard mechanical evacuation, the gasification section vacuum still can not reach the requirement in the tower for the required temperature of evaporation is higher, and the energy consumption increases, simultaneously because the base oil in the useless lubricating oil can begin the schizolysis when 360 ℃, a large amount of schizolysis when exceeding 390 ℃, therefore higher evaporating temperature can lead to the base oil loss, makes the yield reduce.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an ultrahigh vacuum distillation tower for regenerating waste lubricating oil, which solves the problems of overlarge pressure drop in the tower, incapability of meeting the requirement of vacuum degree, high energy consumption, low yield of base oil and the like caused by unreasonable structural arrangement of the conventional distillation tower.
The utility model realizes the purpose through the following technical scheme:
the utility model provides a super high vacuum distillation tower for useless lubricating oil regeneration, includes the tower body, the top of tower body is equipped with the evacuation mouth, and the bottom of tower body is equipped with the sediment hydraulic fluid port, and the side of tower body is equipped with the feed inlet, inside calandria formula distributor, grid formula filler, regular filler and the collecting vat of down being equipped with from top to bottom in proper order of tower body, grid formula filler and regular filler between form empty tower section, the collecting vat is drawn forth from the side of tower body.
The further improvement is that the thickness of the grid type packing is 200-500 mm.
The further improvement is that the thickness of the structured packing is 100-500 mm.
The further improvement is that the vacuum degree of the gasification section in the tower body exceeds 5 mmHg.
The utility model has the beneficial effects that: the distillation tower has large empty tower volume ratio, mainly empty tower mixing condensation during evaporation, small pressure drop, minimum integral pressure drop by adopting a calandria distributor and grid type packing, low evaporation temperature, low energy consumption, effective prevention of cracking of base oil and improvement of the yield of the base oil, and can realize ultrahigh vacuum, wherein the vacuum degree of a gasification section in the tower is higher than 5 mmHg; in addition, the double distribution function of the calandria distributor and the grid type packing can enable the condensed liquid to uniformly disperse and fall, and the regular packing can play a role in buffering and gas distribution, so that the heat transfer in the tower is uniform, and the evaporation is thorough.
Drawings
Fig. 1 is a schematic structural view of the utility model;
in the figure: 1. a tower body; 2. a vacuum pumping port; 3. a slag oil port; 4. a feed inlet; 5. a calandria distributor; 6. a grid type filler; 7. packing regularly; 8. collecting tank; 9. an empty tower section.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
As shown in fig. 1, an ultrahigh vacuum distillation tower for waste lubricating oil regeneration comprises a tower body 1, wherein a vacuum pumping port 2 is arranged at the top end of the tower body 1, a slag oil port 3 is arranged at the bottom end of the tower body 1, a feed inlet 4 is arranged at the side edge of the tower body 1, a calandria distributor 5, a grid-type filler 6, a structured filler 7 and a collecting tank 8 are sequentially arranged in the tower body 1 from top to bottom, a hollow tower section 9 is formed between the grid-type filler 6 and the structured filler 7, and the collecting tank 8 is led out from the side edge of the tower body 1.
The thickness of the packing in the present invention is not large, wherein the thickness of the grid-type packing 6 is 200-500mm, such as 200mm, 300mm, 400mm or 500mm, and the thickness of the regular packing 7 is 100-500mm, such as 100mm, 200mm, 300mm, 400mm or 500 mm.
In the utility model, waste lubricating oil is pumped into the tower body 1 from the feed port 4, the regular packing 7 plays a role in gas distribution along with the evaporation, gas evaporated from light components uniformly disperses and upwards passes through the regular packing 7, heavy component gas condenses and flows back, the calandria distributor 5 plays a role in coarse distribution of condensed liquid, the grid packing 6 plays a role in fine distribution of liquid, uncondensed gas can be condensed, condensed liquid drops, the regular packing 7 plays a role in buffering to prevent the liquid from directly impacting on the collecting tank 8 to influence the collection, distillate oil evaporated from condensing and flowing back is discharged through the collecting tank 8, and finally residual oil not evaporated is discharged through the residual oil port 3. The vacuum degree of the gasification section in the tower body 1 of the distillation tower exceeds 5mmHg and can even reach 3mmHg, so that the evaporation temperature in the tower is lower than 300 ℃.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (4)
1. The utility model provides a super high vacuum distillation tower for useless lubricating oil regeneration, includes tower body (1), the top of tower body (1) is equipped with evacuation mouth (2), and the bottom of tower body (1) is equipped with sediment hydraulic fluid port (3), and the side of tower body (1) is equipped with feed inlet (4), its characterized in that, tower body (1) inside from top to bottom is equipped with calandria distributor (5), grid formula filler (6), regular filler (7) and collecting vat (8) in proper order, form empty tower section (9) between grid formula filler (6) and regular filler (7), collecting vat (8) are drawn forth from the side of tower body (1).
2. The ultrahigh vacuum distillation column for regeneration of used lubricating oil according to claim 1, wherein the thickness of the grid-type packing (6) is 200-500 mm.
3. The ultrahigh vacuum distillation column for regeneration of used lubricating oil according to claim 1, wherein the thickness of the structured packing (7) is 100-500 mm.
4. The ultra-high vacuum distillation column for spent lubricating oil regeneration of claim 1, wherein the degree of vacuum of the gasification stage in the column body (1) exceeds 5 mmHg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123296971.XU CN216703381U (en) | 2021-12-23 | 2021-12-23 | Ultrahigh vacuum distillation tower for regeneration of waste lubricating oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123296971.XU CN216703381U (en) | 2021-12-23 | 2021-12-23 | Ultrahigh vacuum distillation tower for regeneration of waste lubricating oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216703381U true CN216703381U (en) | 2022-06-10 |
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ID=81887860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123296971.XU Active CN216703381U (en) | 2021-12-23 | 2021-12-23 | Ultrahigh vacuum distillation tower for regeneration of waste lubricating oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216703381U (en) |
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2021
- 2021-12-23 CN CN202123296971.XU patent/CN216703381U/en active Active
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