CN202658138U - Solvent dewaxing device - Google Patents
Solvent dewaxing device Download PDFInfo
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- CN202658138U CN202658138U CN 201220265516 CN201220265516U CN202658138U CN 202658138 U CN202658138 U CN 202658138U CN 201220265516 CN201220265516 CN 201220265516 CN 201220265516 U CN201220265516 U CN 201220265516U CN 202658138 U CN202658138 U CN 202658138U
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- dewaxing
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- oiling
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Abstract
The utility model relates to a solvent dewaxing device which comprises a steam heater, a dewaxing-section crystallizing system, a dewaxing-section filtering system and a deoiling section, wherein the dewaxing-section crystallizing system is provided with a dewaxing crystallizer, the dewaxing-section filtering system is a dewaxing section and is provided with a dewaxing filter wax tank, and the deoiling section is provided with a deoiling filter and a deoiling cerate heater. The solvent dewaxing device is characterized in that the device is provided with a dewaxing accessory ingredient storing tank, the outlet of the dewaxing accessory ingredient storing tank is connected with a pipeline before raw oil enters into the dewaxing-section crystallizing system, and a pipeline between the steam heater and the dewaxing-section crystallizing system is connected with the deoiling wax liquid outputting pipeline of the deoiling-section deoiling cerate heater. According to the solvent dewaxing device, the oil and wax components in low-waxy hydrocarbon oil can be effectively separated from each other, the pour point of an oil product can be reduced, and the use level of a dewaxing accessory ingredient can be reduced.
Description
Technical field
The utility model belongs to the solvent dewaxing field of hydrocarbon ils.Specifically, the utility model relates to a kind of device that is applicable to low waxy hydrocarbon Oil solvent dewaxing.
Background technology
In order to keep the low-temperature fluidity of lubricating oil, must in the production process of lubricant base, remove wax contained in the stock oil, to reduce condensation point or the pour point of lubricant base.The method of lube stock dewaxing has a variety of, and wherein the most frequently used is solvent dewaxing process.The principle of solvent dewaxing is exactly that stock oil and dewaxing solvent is miscible, then progressively cooling, utilize insoluble to the wax the component at low temperatures or oligodynamical of solvent and to the characteristic of other components dissolved, make wax crystallization in solution, solution is filtered, obtain dewaxed filtrate and slack wax, obtain respectively pressed oil and gatch behind the desolvation, oil is separated with wax.
The gatch that solvent dewaxing obtains contains more oil content and low-melting component, can not directly as wax product, need through de-oiling.Two sections de-oiling process integrations of at present one section dewaxing of general employing, the slack wax that namely dewaxes adds solvent cut and heats up, oil content and low-melting component in the dissolving slack wax, filtration obtains de-oiling filtrate and de-oiling slack wax, the de-oiling slack wax is pressed again de-oiling of said process, and the de-oiling temperature is higher than one section temperature of de-oiling, filters to obtain de-oiling filtrate and de-oiling slack wax, obtain respectively sweat oil and dewaxed oil behind the desolvation, dewaxed oil behind post-refining as wax product.
Solvent dewaxing technology and device not only can be used for removing the wax of lube stock, also can be for separating of the component of different zero pour in other oil products.For different oil products, because the different and product of the wax content of stock oil and wax molecular structure is different to the requirement of pour point, its solvent dewaxing process has larger difference.Isoparaffin in the wax component, with naphthenic hydrocarbon or the aromatic hydrocarbons of long side chain adopts the pour point of conventional solvent-dewaxing method reduction waxy oil more difficult more.For example: producing in the process of environment-friendly rubber extending oil with furfural extract oil, need to remove first the wax of extracting out in the oil, then could be with its raw materials for production as environment-friendly rubber extending oil.Yet, very difficult with the wax that conventional solvent dewaxing process removes in the furfural extract oil.No matter be the content of wax hydrocarbon ils that is obtained by the crude oil time processing, or the content of wax hydrocarbon ils that obtains after the secondary processing, when the wax content of hydrocarbon ils is low to a certain degree the time, can't adopt conventional solvent dewaxing unit production to meet the pressed oil that pour point requires, this class hydrocarbon ils just is called low content of wax hydrocarbon ils.
The utility model content
The purpose of this utility model is on the basis of existing apparatus, and a kind of improved solvent dewaxing unit is provided, and this device can separate oil and the wax component in the low content of wax hydrocarbon ils effectively, makes low waxy hydrocarbon oil dewaxing become possibility, and reduces running cost.
A kind of solvent dewaxing unit, comprise steam heater, dewaxing section crystal system, dewaxing section filtering system and de-oiling section, dewaxing section crystal system has the dewaxing crystallizer, dewaxing section filtering system is one section dewaxing and dewaxing strainer wax tank is arranged, the de-oiling section has de-oiling strainer and de-oiling slack wax well heater, it is characterized in that, this device is provided with the dewaxing agent storage tank, the outlet of dewaxing agent storage tank enters dewaxing section crystal system pipeline before with stock oil and links, and the pipeline of the pipeline between steam heater and the dewaxing section crystal system and de-oiling section de-oiling slack wax well heater output dewaxed oil liquid links.
In the preferred situation, be provided with liquid mixer between steam heater and dewaxing crystal system, the outlet of dewaxing agent storage tank enters liquid mixer pipeline before with stock oil and links.In the preferred situation, between steam heater and dewaxing crystal system, be provided with liquid mixer, the outlet of dewaxing agent storage tank enters liquid mixer pipeline before with stock oil and links, and the pipeline of the pipeline between steam heater and the liquid mixer and de-oiling section de-oiling slack wax well heater output dewaxed oil liquid links.
In the preferred situation, the outlet of dewaxing agent storage tank links with the pipeline that stock oil enters steam heater.
In the preferred situation, between dewaxing strainer wax tank and de-oiling strainer, set gradually dewaxing slack wax slurries well heater and wax solution crystallization device; In the preferred situation, set gradually dewaxing slack wax slurries well heater and wax solution crystallization device between dewaxing strainer wax tank and de-oiling strainer, the pipeline between steam heater and the dewaxing section crystal system and the pipeline between dewaxing slack wax slurries well heater and the wax solution crystallization device link; In the further preferred situation, between dewaxing strainer wax tank and de-oiling strainer, set gradually dewaxing slack wax slurries well heater and wax solution crystallization device, be provided with liquid mixer between steam heater and dewaxing crystal system, the pipeline between the pipeline between steam heater and the liquid mixer and dewaxing slurries well heater and the wax solution crystallization device links.
The utility model also can arrange the device of heating dewaxing slack wax at dewaxing strainer wax tank, and between dewaxing strainer wax tank and de-oiling strainer wax solution crystallization device is set.
Described de-oiling section is preferably one section de-oiling.
In the preferred situation, de-oiling strainer filtrate outlet pipeline links with the dewaxing crystallizer of dewaxing section crystal system.
Oil and wax component in the low content of wax hydrocarbon ils of the utility model energy effective separation reduce oil pour point, reduce the dewaxing agent usage quantity.
Description of drawings
Accompanying drawing 1 is device synoptic diagram of the present utility model, and number in the figure is: the 4-steam heater; The 7-liquid mixer; The 9-crystallizer that dewaxes; The 12-strainer that dewaxes; 16-dewaxing strainer wax tank; 19-dewaxing slack wax slurries well heater; 23-wax solution crystallization device; 26-de-oiling strainer; 29-de-oiling slack wax well heater.
Embodiment
Below in conjunction with description of drawings a kind of embodiment of the present utility model.
Stock oil is through pipeline 1 and enter steam heater 4 from the liquid dewaxing agent in the pipeline 2 (not marking the dewaxing agent storage tank among the figure) through pipeline 3, and mixed oil liquid enters mixing tank 7 through pipeline 5,6.Mixed oil liquid enters crystallizer 9 crystallizations through pipeline 8 and solvent from pipeline 10, and the dewaxing crystallization fluid that reaches filtration temperature enters dewaxing strainer 12 through pipeline 11 and filters, and cold wash solvent enters 12 flushings of dewaxing strainer from pipeline 13.Dewaxed filtrate and cold wash filtrate are removed dewaxed filtrate solvent recovering system (not marking among the figure) through pipeline 14 after filtering, and obtain pressed oil behind the desolvation.Slack wax is through pipeline 15 and diluting solvent from the pipeline 17 strainer wax tank 16 that goes to dewax, the slack wax slurries enter dewaxing slack wax slurries well heater 19 heating for dissolving through pipeline 18, wax solution both can join mixing tank 7 entrances through pipeline 20,21 and 6, be used for Substitute For Partial or whole dewaxing agents, reduce de-oiling section load, also can enter wax solution crystallization device 23 with solvent from pipeline 24 through pipeline 20,22 and lower the temperature.The wax slurries that reach filtration temperature enter de-oiling strainer 26 through pipeline 25 and filter. and rinse solvent enters 26 flushings of de-oiling strainer from pipeline 27.De-oiling filtrate and flushing filtrate both can be through pipeline 31 as dewaxing section diluting solvents, reduce the fresh solvent amount, also can remove de-oiling filtrate solvent recovering system (not marking among the figure) through pipeline 30, obtain sweat oil behind the desolvation, it is de-oiling slack wax solution that the de-oiling slack wax enters de-oiling slack wax well heater 29 heating and melting through pipeline 28, de-oiling slack wax solution both can join mixing tank 7 entrances through pipeline 33,6, be used for Substitute For Partial or whole dewaxing agents, also can remove de-oiling slack wax solvent recovering system through pipeline 32, behind the desolvation, obtain dewaxed oil.
Adopt above-mentioned embodiment, process second line of distillation furfural refining oil (character sees Table 1) with following condition, the dewaxing filtration temperature is-10 ℃, dewaxing agent is the paraffin of 56 ℃ of fusing points, the mass ratio of dewaxing agent and stock oil is 0.06: 1, the dewaxing slack wax all enters wax solution crystallization device molten night, and de-oiling filtrate is all gone the filtrate recovery system, replaces whole dewaxing agents to recycle after the de-oiling slack wax heating and melting.After adding dewaxing agent, making low content of wax hydrocarbon ils remove high condensation point component at solvent dewaxing unit becomes possibility, and auxiliary agent recycles, and reduces cost.The pressed oil pour point that obtains through the utility model device is-3 ℃.
Table 1
| The second line of distillation furfural refining oil | |
| Pour point/ |
21 |
| 100 ℃ of viscosity/(mm 2/s) | 4.265 |
| 20 ℃ of density/(kg/m 3) | 859.8 |
| Carbon residue/% | ＜0.05 |
| Flash-point/℃ | 192 |
| Boiling range/ |
|
| 10％ | 361 |
| 30/％ | 392 |
| 50/％ | 411 |
| 70/％ | 429 |
Claims (10)
1. solvent dewaxing unit, comprise steam heater, dewaxing section crystal system, dewaxing section filtering system and de-oiling section, dewaxing section crystal system has the dewaxing crystallizer, dewaxing section filtering system is one section dewaxing and dewaxing strainer wax tank is arranged, the de-oiling section has de-oiling strainer and de-oiling slack wax well heater, it is characterized in that, this device is provided with the dewaxing agent storage tank, the outlet of dewaxing agent storage tank enters dewaxing section crystal system pipeline before with stock oil and links, and the pipeline of the pipeline between steam heater and the dewaxing section crystal system and de-oiling section de-oiling slack wax well heater output dewaxed oil liquid links.
2. according to device claimed in claim 1, it is characterized in that be provided with liquid mixer between steam heater and dewaxing section crystal system, the outlet of dewaxing agent storage tank enters liquid mixer pipeline before with stock oil and links.
3. according to device claimed in claim 2, it is characterized in that the pipeline of the pipeline between steam heater and the liquid mixer and de-oiling section de-oiling slack wax well heater output dewaxed oil liquid links.
4. according to device claimed in claim 1, it is characterized in that the outlet of dewaxing agent storage tank links with the pipeline that stock oil enters steam heater.
5. according to device claimed in claim 1, it is characterized in that, between dewaxing strainer wax tank and de-oiling strainer, set gradually dewaxing slack wax slurries well heater and wax solution crystallization device.
6. according to device claimed in claim 5, it is characterized in that the pipeline between steam heater and the dewaxing section crystal system and the pipeline between dewaxing slack wax slurries well heater and the wax solution crystallization device link.
7. according to device claimed in claim 1, it is characterized in that de-oiling section de-oiling strainer filtrate outlet pipeline links with the dewaxing crystallizer of dewaxing section crystal system.
8. according to device claimed in claim 1, it is characterized in that the de-oiling of described de-oiling Duan Weiyi section.
9. according to device claimed in claim 1, it is characterized in that dewaxing strainer wax tank is provided with the device of heating dewaxing slack wax, between dewaxing strainer wax tank and de-oiling strainer wax solution crystallization device is set.
10. according to device claimed in claim 1, it is characterized in that, this device is provided with liquid mixer between steam heater and dewaxing section crystal system, the pipeline of the pipeline between steam heater and the liquid mixer and de-oiling section de-oiling slack wax well heater output dewaxed oil liquid links, the outlet of dewaxing agent storage tank links with the pipeline that stock oil enters steam heater, sets gradually dewaxing slurries well heater and wax solution crystallization device between dewaxing strainer wax tank and de-oiling strainer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265516 CN202658138U (en) | 2012-06-07 | 2012-06-07 | Solvent dewaxing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265516 CN202658138U (en) | 2012-06-07 | 2012-06-07 | Solvent dewaxing device |
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| Publication Number | Publication Date |
|---|---|
| CN202658138U true CN202658138U (en) | 2013-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220265516 Expired - Lifetime CN202658138U (en) | 2012-06-07 | 2012-06-07 | Solvent dewaxing device |
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| CN (1) | CN202658138U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112625747A (en) * | 2019-09-24 | 2021-04-09 | 内蒙古伊泰煤基新材料研究院有限公司 | Solvent deoiling device and method |
| CN112625746A (en) * | 2019-09-24 | 2021-04-09 | 内蒙古伊泰煤基新材料研究院有限公司 | Device and method for preparing high-quality wax |
| CN114196440A (en) * | 2020-09-17 | 2022-03-18 | 内蒙古伊泰煤基新材料研究院有限公司 | Production device and production method of Fischer-Tropsch wax product |
-
2012
- 2012-06-07 CN CN 201220265516 patent/CN202658138U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112625747A (en) * | 2019-09-24 | 2021-04-09 | 内蒙古伊泰煤基新材料研究院有限公司 | Solvent deoiling device and method |
| CN112625746A (en) * | 2019-09-24 | 2021-04-09 | 内蒙古伊泰煤基新材料研究院有限公司 | Device and method for preparing high-quality wax |
| CN112625746B (en) * | 2019-09-24 | 2022-08-30 | 内蒙古伊泰煤基新材料研究院有限公司 | Device and method for preparing high-quality wax |
| CN112625747B (en) * | 2019-09-24 | 2022-09-02 | 内蒙古伊泰煤基新材料研究院有限公司 | Solvent deoiling device and method |
| CN114196440A (en) * | 2020-09-17 | 2022-03-18 | 内蒙古伊泰煤基新材料研究院有限公司 | Production device and production method of Fischer-Tropsch wax product |
| CN114196440B (en) * | 2020-09-17 | 2024-03-08 | 内蒙古伊泰煤基新材料研究院有限公司 | Apparatus and method for producing Fischer-Tropsch wax product |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |