CN215250628U - Basic lubricating oil production device - Google Patents
Basic lubricating oil production device Download PDFInfo
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- CN215250628U CN215250628U CN202120661382.8U CN202120661382U CN215250628U CN 215250628 U CN215250628 U CN 215250628U CN 202120661382 U CN202120661382 U CN 202120661382U CN 215250628 U CN215250628 U CN 215250628U
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Abstract
The utility model discloses a basic lubricating oil production device, which comprises a combustion furnace, a decompression fractionating tower, a pump and a product discharge device; the discharge hole of the combustion furnace is communicated with the feed inlet of the pressure reduction fractionating tower; a buffer tank is arranged between the reduced pressure fractionating tower and the extraction pump, a discharge port of the reduced pressure fractionating tower is connected with a feed port of the buffer tank through a side extraction pipeline, a discharge port of the buffer tank is communicated with a feed port of the extraction pump, a first discharge port of the extraction pump is connected with the reduced pressure fractionating tower through a return pipeline, and a second discharge port of the extraction pump is communicated with a product discharge device; the advantage lies in that the oil carries out a lot of backward flow cutting when getting into the vacuum fractionating tower for fully exchanging between each fraction, improved the cutting accuracy to the fraction, reduced the overlap portion of each fraction in the product, improved product property and added value greatly, process the utility model discloses the industrial grade white oil product flash point that the device was adopted is higher.
Description
Technical Field
The utility model belongs to the technical field of the oil refining, especially, relate to a basic lubricating oil's apparatus for producing.
Background
The novel lubricating oil hydrogenation device is newly built in recent years to produce various grades of basic lubricating oil, and the basic lubricating oil has the advantages of narrow range of fraction, stable viscosity, colorlessness, tastelessness, stable flash point and good heat stability. The basic lubricating oil is regarded as a higher value-added product and is highly valued by the petrochemical industry at home and abroad.
The lubricating oil is a petroleum refining product with high added value and is refined by a fuel-lubricating oil type atmospheric and vacuum distillation device. The raw oil passes through an atmospheric tower and is cut into waste lubricating oil such as naphtha, kerosene, diesel oil, heavy diesel oil, atmospheric residue oil and the like, the waste lubricating oil enters a reduced pressure fractionating tower and is subjected to steam stripping by a side stripper to obtain base lubricating oil with different distillation ranges, and the base lubricating oil is subjected to subsequent treatment to obtain a lubricating oil product meeting the requirements.
The requirement on the partition precision of a fractionating tower in a refining device is higher and higher, but the existing fractionating system only simply extracts waste lubricating oil from a decompression fractionating tower firstly and then extracts the waste lubricating oil once after the waste lubricating oil is stripped in a side stripper. In the traditional production process, the gas-liquid phase exchange in the fractionating tower is only carried out once in the oil extraction tower, the cutting precision of the fractionating tower is not high, and the overlapped parts among all fractions in the oil product are more, so that the quality of the obtained basic lubricating oil product is not high, and the production requirement can not be met.
Disclosure of Invention
The utility model provides a basic lubricating oil's apparatus for producing for the used lubricating oil flows back many times when getting into the fractionating tower cutting gas-liquid phase exchange, reduces the overlap portion between the various basic lubricating oil fractions, has improved the cutting accuracy to the fraction and has guaranteed the quality of product simultaneously.
For solving the above technical problem, the utility model discloses a technical scheme does:
a basic lubricating oil production device comprises a combustion furnace, a reduced pressure fractionating tower, a pump and a product discharge device; the discharge hole of the combustion furnace is communicated with the feed inlet of the reduced pressure fractionating tower; a buffer tank is arranged between the pressure-reducing fractionating tower and the pump, a discharge port of the pressure-reducing fractionating tower is connected with a feed port of the buffer tank through a side extraction pipeline, a discharge port of the buffer tank is communicated with a feed port of the pump, a first discharge port of the pump is connected with the pressure-reducing fractionating tower through a return pipeline, and a second discharge port of the pump is communicated with the product discharge device.
Preferably, a gas-liquid phase exchange pipeline is arranged between the discharge hole of the reduced pressure fractionation tower and the feed hole of the buffer tank. After the oil is buffered in the buffer tank, part of light oil flows back to the reduced pressure fractionating tower from the discharge hole of the buffer tank through the gas-liquid phase exchange pipeline for repeated cutting and fractionation, and the cutting precision of the distillate is further improved.
Preferably, a small backflow pipeline is arranged between the discharge hole of the extraction pump and the feed inlet of the buffer tank. The structure that sets up little return line and be connected to the feed inlet of buffer tank can alleviate the flow pressure of pump of taking out, and the protective apparatus better guarantees operation safety.
Preferably, the pump is provided with a side stripper through a pipeline, a discharge port of the pump is connected with a feed port of the side stripper, the side stripper is provided with a product pump through a pipeline, a discharge port of the side stripper is connected with a feed port of the product pump, and a first discharge port of the product pump is connected with the product discharge device. By arranging the side stripping tower, the extraction rate of light component fractions can be improved, and the quality of side products is guaranteed.
Preferably, the top outlet of the side stripper is connected to the vacuum fractionation column via a pipeline. And the light component fraction in the side stripping tower returns to the reduced pressure fractionating tower through a top outlet for further reflux exchange, so that the product quality of the light component fraction is improved.
Preferably, the second discharge port of the output pump is connected with the vacuum fractionation tower through a reflux pipeline. Heavy component oil after the discharge gate through output pump flows back to the vacuum fractionating tower and rectifies, improves the cutting accuracy to the fraction, has further ensured the quality of heavy component in the oil.
Preferably, the third discharge port of the output pump is connected with the side-mining stripping tower through a small return pipeline. The structure of the small return pipeline can better protect the output pump, ensure the operation safety and ensure the stable operation of the fractionating system.
Compared with the prior art, the utility model has the advantages of:
the utility model provides a basic lubricating oil's apparatus for producing, through set up the buffer tank between decompression fractionating tower and pump-out, the process design that the first discharge gate of pump-out is connected with the decompression fractionating tower through backflow pipeline for useless lubricating oil carries out a lot of backward flow cutting when getting into the decompression fractionating tower, makes fully exchange between each fraction, has improved the cutting precision to the fraction, greatly reduced the overlap portion of each fraction in the product, the experiment shows, through the utility model discloses an overlap portion of the product that the device was adopted can fall below 15%.
The utility model provides a basic lubricating oil's apparatus for producing, the white oil product that the white oil product flash point of mining than current device was mined is high, can reach 170+ ° C, surpasss the flash point standard that national standard GB 4853 supplyes with drugs 1994 requirement far away, has improved product property and added value greatly.
Drawings
FIG. 1 is a schematic structural diagram of a basic lubricant production apparatus of the present invention;
wherein, 1 is a combustion furnace; 11 is a pipeline; 2 is a vacuum fractionating tower; 21 is a side mining pipeline; 22 is a gas-liquid phase exchange pipeline; 3 is a buffer tank; 31 is a pipeline; 4 is a pump; 41 is a pipeline; 42 is a small return pipeline; 43 is a return line; a side stripper is arranged at the position 5; 5-1 is a filler; 51 is a pipeline; 52 is a pipeline; 6 is a product pump; 61 is a pipeline; 62 is a return pipeline; 63 is a small return pipe;
fig. 2 is the utility model discloses in a basic lubricating oil's apparatus for producing in buffer tank and the schematic structure of the pipeline of being connected with the buffer tank.
Detailed Description
For further understanding of the present invention, preferred embodiments of the present invention will be described below with reference to examples, but it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the claims of the present invention.
Example 1:
as shown in the attached figure 1, a basic lubricating oil production device comprises a combustion furnace 1, a reduced pressure fractionating tower 2, a pump 4 and a product discharge device (not shown in the figure); the discharge hole of the combustion furnace 1 is communicated with the feed hole of the reduced pressure fractionating tower 2 through a pipeline 11; be provided with buffer tank 3 between decompression fractionating tower 2 and the pump 4 of withdrawing, the discharge gate of decompression fractionating tower 2 is adopted the pipeline 21 through the side and is connected with the feed inlet of buffer tank 3, the discharge gate of buffer tank 3 is connected with the feed inlet of pump 4 of withdrawing through pipeline 31, the first discharge gate through pump 4 of withdrawing is connected with decompression fractionating tower 2 through backflow pipeline 43, the second discharge gate of pump 4 of withdrawing is connected with product eduction gear through pipeline 41, the third discharge gate of pump 4 of withdrawing is linked together through little backflow pipeline 42 and buffer tank 3's feed inlet.
The waste lubricating oil is fractionated by the reduced pressure fractionating tower 2, enters the reduced pressure fractionating tower 2 for fractionation after passing through the buffer tank 3 and the reflux pipeline 43, is cut and fractionated twice in the fractionating tower, improves the cutting precision of the fractions, reduces the overlapped part between oil products, discharges and collects the product oil through the pipeline 41, and improves the quality of the output product. The structure of providing the small return pipe 42 and connecting to the feed port of the buffer tank 3 is due to the pump minimum flow restriction of the suction pump 4 in order to better protect the equipment and ensure the safety of operation.
Example 2:
the rest is the same as example 1, except that: a gas-liquid phase exchange pipeline 22 is arranged between the discharge hole of the decompression fractionating tower 2 and the feed inlet of the buffer tank 1. After the oil is buffered in the buffer tank 3, part of light oil flows back to the reduced pressure fractionating tower 2 from the discharge hole of the buffer tank 3 through the gas-liquid phase exchange pipeline 22 for repeated cutting and fractionation, and the cutting precision of the fraction is further improved.
Example 3:
the rest is the same as example 1, except that: the extraction pump 4 is connected with a side stripper 5 through a pipeline 41, a discharge port of the extraction pump 4 is connected with a feed inlet of the side stripper 5 through a pipeline 41, a top outlet of the side stripper 5 is connected with the reduced pressure fractionating tower 2 through a pipeline 51, the side stripper 5 is connected with a product pump 6, a discharge port of the side stripper 5 is connected with a feed inlet of the product pump 6 through a pipeline 52, a first discharge port of the product pump 6 is connected with a product discharge device through a pipeline 61, a second discharge port of the product pump 6 is connected with the reduced pressure fractionating tower 2 through a reflux pipeline 62, and a third discharge port of the product pump 6 is connected with the side stripper 5 through a small reflux pipeline 63.
After the oil product is subjected to gas-liquid exchange by the filler 5-1 in the side stripper 5, light oil flows back to the reduced pressure fractionating tower 2 from the top outlet of the side stripper 5 through a pipeline 51 for cutting and fractionation, and heavy oil is condensed by the condenser 5-1 and then discharged out of the discharge hole of the side stripper 5; the second discharge gate of the oil that pumps from the product pump 6 flows back to the vacuum fractionating tower 2 through the return line 62 and cuts the fractionation once more, the cutting precision to the fraction has further been improved, make the overlap between the oil reduce, the third discharge gate of the product pump 6 is through the structure setting of little return line 63 to side stripper 5 in order to protect the product pump 6, make the operation process safer, product oil such as basic lubricating oil is discharged and is collected by pipeline 61 through the second discharge gate of the product pump 6, the product quality of output has been improved.
The utility model discloses the operation method of device:
the raw material wax oil enters a combustion furnace 1 for heating after reacting in a reactor to obtain waste lubricating oil, and the waste lubricating oil enters a reduced pressure fractionating tower 2 for mass and heat transfer after the temperature is increased; the stripping steam of the reduced pressure fractionating tower 2 is injected from the bottom of the tower inwards, the temperature and the pressure of the stripping steam, the operating pressure and the extraction temperature of the reduced pressure fractionating tower 2 are set, and the oil is fractionated in the reduced pressure fractionating tower 2 and then extracted to the feed inlet of the buffer tank 3 through the side extraction pipeline 21; a part of the oil products of the light fraction in the buffer tank 3 firstly returns to the vacuum fractionating tower 2 through a gas-liquid phase exchange pipeline 22, and the rest heavy oil is discharged from a discharge hole of the buffer tank 3 to a pump 4; one path of the oil product pumped out by the pump 4 is pumped back to the pressure reduction fractionating tower 2 through a reflux pipeline 43, the other path of the oil product is pumped back to the buffer tank 3 through a small reflux pipeline 42, and the other path of the oil product is pumped out to the side stripper 5 through a pipeline 41 for final stripping; setting the temperature and pressure of stripping steam and the pressure of a side stripper 5, after the oil is subjected to gas-liquid exchange by a filler 5-1 in the side stripper 5, firstly, the light components stripped by the stripping steam directly return to a reduced pressure fractionating tower 2 through a pipeline 51 at the outlet at the top end of the side stripper 5 for repeated cutting reflux, and the residual oil passes through a discharge hole of the side stripper 5 and reaches a product pump 6 through a pipeline 52; one path of oil from the discharge port of the product pump 6 returns to the side stripper 5 through a small return pipeline 63, the other path of oil returns to the vacuum fractionating tower 2 through a return pipeline 62 for rectification, and the other path of oil is extracted to a tank area through a pipeline 61 to obtain industrial white oil.
The product oil extracted by the production device of the utility model is compared with the product oil extracted by the existing device, and the obtained comparison table is shown in table 1;
TABLE 1 the contrast table of the product oil produced by the production device and the product oil produced by the existing device
| Product overlap ratio | Flash point of white oil (open) | Rate of product stability | |
| Existing production apparatus | 30% | 130℃ | In general |
| The utility model discloses a device | 12% | 175℃ | Is excellent in |
And (3) analyzing an experimental result: as can be seen from the experimental data in Table 1, the product stability of the product oil produced by the production device of the utility model is more stable than that of the product oil produced by the existing production device; the production device of the utility model can reduce the overlapping part of the product to below 15 percent, thereby greatly reducing the overlapping rate of the product compared with the prior device for oil extraction; the utility model discloses a product flash point of white oil that apparatus for producing obtained is higher than the existing device, according to the regulation in national standard GB 4853 supplyes 1994, and the flash point (opening) of food level No. 10 white oil is not less than 145 ℃, and passes through the utility model discloses the white oil flash point that the device was adopted surpasss the flash point standard that the national standard required far away, and product nature and added value all improve greatly.
In conclusion, through the utility model discloses the device is adopted to the finished product oil in tank field and is successively through many times cutting backward flow in the vacuum fractionating tower, makes the oil fully exchange in the vacuum fractionating tower, improves the cutting precision to the fraction to the nature and the added value of product have been improved widely.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A basic lubricating oil production device comprises a combustion furnace, a reduced pressure fractionating tower, a pump and a product discharge device; the discharge hole of the combustion furnace is communicated with the feed inlet of the reduced pressure fractionating tower; the device is characterized in that a buffer tank is arranged between the pressure-reducing fractionating tower and the extraction pump, a discharge port of the pressure-reducing fractionating tower is connected with a feed port of the buffer tank through a side extraction pipeline, a discharge port of the buffer tank is communicated with a feed port of the extraction pump, a first discharge port of the extraction pump is connected with the pressure-reducing fractionating tower through a return pipeline, and a second discharge port of the extraction pump is communicated with the product discharge device.
2. The apparatus for producing a base lubricant according to claim 1, wherein a gas-liquid phase exchange pipeline is disposed between the discharge port of the vacuum fractionation tower and the feed port of the buffer tank.
3. The apparatus for producing a base lubricant according to claim 1 or 2, wherein a small return line is provided between the discharge port of the suction pump and the feed port of the surge tank.
4. The basic lubricating oil production device of claim 1, wherein the pump is provided with a side stripper through a pipeline, a discharge port of the pump is connected with a feed port of the side stripper, the side stripper is provided with a product pump through a pipeline, a discharge port of the side stripper is connected with a feed port of the product pump, and a first discharge port of the product pump is connected with the product discharge device.
5. The apparatus for producing a base lubricant according to claim 4, wherein the top outlet of the side stripper is connected to the vacuum fractionator via a pipe.
6. The apparatus for producing a base lubricant according to claim 4 or 5, wherein the second discharge port of the output pump is connected to the vacuum fractionation tower through a reflux line.
7. The apparatus for producing a base lubricant according to claim 6, wherein the third outlet of the output pump is connected to the side stripping tower through a small return line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120661382.8U CN215250628U (en) | 2021-03-31 | 2021-03-31 | Basic lubricating oil production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120661382.8U CN215250628U (en) | 2021-03-31 | 2021-03-31 | Basic lubricating oil production device |
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| Publication Number | Publication Date |
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| CN215250628U true CN215250628U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120661382.8U Active CN215250628U (en) | 2021-03-31 | 2021-03-31 | Basic lubricating oil production device |
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| CN (1) | CN215250628U (en) |
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- 2021-03-31 CN CN202120661382.8U patent/CN215250628U/en active Active
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