CN104212479A - Solvent refining method for production of rubber filling oil or lubricating oil - Google Patents
Solvent refining method for production of rubber filling oil or lubricating oil Download PDFInfo
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- CN104212479A CN104212479A CN201310219484.4A CN201310219484A CN104212479A CN 104212479 A CN104212479 A CN 104212479A CN 201310219484 A CN201310219484 A CN 201310219484A CN 104212479 A CN104212479 A CN 104212479A
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Abstract
The invention relates to a solvent refining method for production of rubber filling oil or lubricating oil; a solvent pipeline for returning to an extracted liquid system is additionally arranged on an extracted liquid pipeline of a solvent extracting tower, the solvent pipeline is from the bottom of a solvent drying tower to the extracted liquid pipeline; raw material oil is in the lower part of the solvent extracting tower during the production of the rubber filling oil; an extracted liquid on the bottom of the solvent extracting tower is mixed with a solvent to form a mixed liquid of the extracted liquid and part of the solvent, wherein the solvent is on the bottom of the solvent drying tower and is returned to the extracted liquid system, the mixed liquid of the extracted liquid and part of the solvent enters into an extracted liquid solvent recovery system to obtain a solvent for recycling; raffinate on the top of the solvent extracting tower is stripped with steam for removal of the solvent to obtain the rubber filling oil; during production of the lubricating oil, the solvent pipeline for returning to the extracted liquid system is closed; the content of polycyclic aromatic hydrocarbons in the rubber filling oil prepared by the method is less than 3%; the benzopyrene content is less than 1mg / kg; the content of 8 kinds of harmful aromatic compounds is less than 10mg / kg, and CA is >= 10%.
Description
Technical field
The present invention relates to a kind of method for refining solvent producing environment-friendly rubber extending oil or lubricating oil.
Background technology
In the process of manufacture of the rubber items such as tire, for improving the processing characteristics of sizing material, usually need to add a certain amount of rubber filling oil.European Union has issued 2005/69/EC instruction on December 9th, 2005, require from 1 day January in 2010, all enter EU market tire and rubber item in, 8 kinds of harmful polycyclic aromatic hydrocarbons (PAHs) total amounts every kilogram be listed in the extending oil used can not more than 10 milligrams, and wherein benzopyrene (BaP) content every kilogram can not more than 1 milligram.Therefore, the production technology of environment-friendly rubber extending oil is badly in need of.
Environment-friendly rubber oil mainly contains following three kinds: TDAE (process aromatic hydrocarbon oil), MES (also known as shallow oil pumping) and NAP (naphthenic oil) both at home and abroad at present.TDAE be to lubricating oil solvent extract out oil re-refine removing poisonous polycyclic aromatic hydrocarbons after produce; MES forms by dewaxing after the either shallow solvent treatment of paraffinic crude distillate or hydrofining again; NAP is formed through solvent treatment or hydrofining by naphthenic base crude distillate.The composition of TDAE is extracted oils extending oil composition out with lubricating oil solvent and is differed little, and aromaticity content is high good with rubber compatibility; In the composition of MES and NAP, total aromaticity content is relatively low, with rubber compatibility difference.
From the production technology of producing environment-friendly rubber extending oil at present, adopt solvent treatment or hydrotreatment-solvent treatment combination process to produce mostly, the raw material of general environment-friendly rubber extending oil is the solvent-refined extraction oil of plain oil, so the manufacturer of environment-friendly rubber extending oil is also the manufacturer of lubricant base simultaneously, because the manufacturing condition of environment-friendly rubber extending oil and general plain oil also exists larger difference, be difficult to the production simultaneously meeting environment-friendly rubber extending oil and plain oil like this, main difference is that solvent ratio is different with extraction temperature, industrially temperature generally can be met the demands by modes such as heat exchange, produce environment-friendly rubber extending oil and generally need less solvent ratio, the solvent ratio that general common lubricant oil require is larger, and the solvent recovering system of general lubricating oil solvent device designs by larger solvent ratio, so, under less solvent ratio condition, solvent recovering system is difficult to normal operation, therefore be badly in need of that exploitation is a kind of can produce the method for refining solvent that environment-friendly rubber extending oil can produce again plain oil and meet the needs of production.
Summary of the invention
The object of this invention is to provide a kind of method for refining solvent producing environment-friendly rubber extending oil or lubricating oil, by the Extract pipeline of the solvent tower at industrial lubricant solvent refining unit being set up one from solvent seasoning tower bottom to the solvent line returning Extract system of Extract pipeline, partial solvent being returned Extract system, meeting the normal operation of solvent recovering system when producing environment-friendly rubber extending oil.
The method for refining solvent of production environment-friendly rubber filling of the present invention or lubricating oil, when producing environment-friendly rubber extending oil: stock oil delivers to the bottom of solvent tower by pipeline pump; The top of solvent tower delivered to by tower top extraction solvent by pipeline pump from the bottom of solvent seasoning tower; Extract and the mixed solution from the solvent returning Extract system of the bottom of solvent seasoning tower being Extract and partial solvent of solvent extraction tower bottom, the mixed solution of Extract and partial solvent enters Extract solvent recovering system and obtains solvent, recycles; The raffinate of solvent extraction top of tower obtains environment-friendly rubber extending oil after stripping is except desolventizing; When producing plain oil, close the solvent line returning Extract system, all the other are the same similar.
The solvent quality ratio that the present invention produces lubricating oil solvent is 1.5 ~ 3.5:1, and the solvent-refined solvent quality ratio of environment-friendly rubber extending oil is 0.5 ~ 2:1, more be optimized for (mass ratio) 0.5 ~ 1.5:1, although the treatment capacity of solvent refining unit has certain setting range, but it is limited, because the solvent ratio of producing environment-friendly rubber extending oil is little, the method that depending merely on increases feed throughput has certain limit to increase the amount of solvent in Extract, therefore on the general solvent refining unit producing lubricating oil, one is set up from solvent seasoning tower bottom to the solvent line returning Extract system of Extract pipeline, quantity of solvent in Extract reduction due to solvent ratio reduced adds Extract system by pipeline, such solvent extraction system would not due to the reduction of solvent ratio, and make the total amount of solvent in Extract reduce to affect the operation of solvent recovering system, the normal running of solvent refining unit under low solvent ratio can be realized, thus realize a set of solvent refining unit and can produce environment-friendly rubber extending oil and can produce plain oil again.
When producing environment-friendly rubber extending oil, bottom from solvent seasoning tower bottom to extraction tower, the quantity of solvent of Extract outlet and the mass values of stock oil are 0.1 ~ 3.0:1; During production common lubricant oil base oil, this solvent line is closed, and its quantity of solvent is zero.
Of the present inventionly described can produce the method for refining solvent that environment-friendly rubber extending oil can produce again plain oil, the production requirement of environment-friendly rubber extending oil and plain oil can be met simultaneously.The content that the rubber filling oil produced meets (1) Ppolynuclear aromatic hydrocarbon (PCA) is less than 3%; (2) benzopyrene (BaP) content is less than 1mg/kg; The total content of (3) 8 kinds of harmful aromatics is less than 10mg/kg, meets the requirement of European Council Regulation 2005/69/EC environmental protection index, and the contained few cyclic aromatic series hydrocarbon content of this rubber oil is high, C
a>=10%, meet the requirement of tyre industry to environment-friendly rubber oil use properties.The plain oil produced meets base oil requirement.
Accompanying drawing explanation
Fig. 1 produces the production technological process of the method for refining solvent of rubber filling oil or lubricating oil,
Wherein: 1, solvent tower; 2, solvent seasoning tower; 3, stock oil; 4, tower top extraction solvent; 5, the solvent of Extract system is returned; 6, Extract; 7, the mixed solution of Extract and partial solvent; 8, raffinate.
Embodiment
Of the present inventionly can produce the method for refining solvent that environment-friendly rubber extending oil can produce again plain oil, by the Extract pipeline of the solvent tower at industrial lubricant solvent refining unit being set up one from solvent seasoning tower bottom to the solvent line returning Extract system of Extract pipeline, partial solvent being returned Extract system, meeting the normal operation of solvent recovering system when producing environment-friendly rubber extending oil.
The invention provides and a kind ofly can produce the method for refining solvent that environment-friendly rubber extending oil can produce again plain oil, when producing environment-friendly rubber extending oil: stock oil delivers to the bottom of solvent tower 1 by pipeline pump; The top of solvent tower delivered to by tower top extraction solvent 4 by pipeline pump from the bottom of solvent seasoning tower 2; Extract 6 and the mixed solution 7 being mixed into Extract and partial solvent from the solvent 5 returning Extract system of the bottom of solvent seasoning tower 2 of solvent extraction tower bottom, the mixed solution 7 of Extract and partial solvent enters Extract solvent recovering system and obtains solvent, recycles; The raffinate 8 at solvent tower 1 top obtains environment-friendly rubber extending oil after stripping is except desolventizing; When producing plain oil, close the solvent line returning Extract system, all the other are the same similar.
Embodiment, only for the embodiment of environment-friendly rubber extending oil, during for production common lubricant oil base oil, is closed from solvent seasoning tower bottom to the pipeline of Extract, identical with the production operation of former common lubricant oil base oil.
Embodiment 1
Oil is extracted out for stock oil to subtract three line lubricating oil solvents, solvent treatment condition is: tower top temperature is 60 DEG C, column bottom temperature is 40 DEG C, the mass ratio that solvent furfural and stock oil lubricating oil solvent extract oil out is 1.0:1, from solvent seasoning tower bottom to the quantity of solvent of Extract system and the mass ratio of stock oil be than being 0.5:1, solvent recovering system smooth operation, the yield of gained environment-friendly rubber extending oil is 48.2%, C
a26.0%, PCA2.76%, 8 kinds of harmful aromatic hydrocarbons total contents are 4.8mg/kg, and benzopyrene (BaP) does not measure for inspection, and meet European Union environmental protection requirement, character sees attached list.
Comparative example 1
Do not implement partial solvent and return Extract system, in order to make solvent recovering system normal running, the solvent treatment condition that can only carry out is: tower top temperature is 60 DEG C, column bottom temperature is 40 DEG C, the mass ratio that solvent furfural and stock oil lubricating oil solvent extract oil out is 1.5:1, the yield of gained environment-friendly rubber extending oil is 43.6%, C
a15.5%, PCA1.01%, 8 kinds of harmful aromatic hydrocarbons total contents are 1.7mg/kg, and benzopyrene (BaP) does not measure for inspection, and character sees attached list.
Embodiment 2
To subtract three line lubricating oil distillates for stock oil, solvent treatment condition is: tower top temperature is 65 DEG C, column bottom temperature is 40 DEG C, the mass ratio of solvent furfural and stock oil is 0.5:1, from solvent seasoning tower bottom to the quantity of solvent of Extract system and the mass ratio of stock oil be than being 3.0:1, solvent recovering system smooth operation, the yield of gained environment-friendly rubber extending oil is 80.5%, C
a14.1%, PCA2.85%, 8 kinds of harmful aromatic hydrocarbons total contents are 5.6mg/kg, and benzopyrene (BaP) does not measure for inspection, and meet European Union environmental protection requirement, character sees attached list.
Comparative example 2
Do not implement partial solvent and return Extract system, in order to make solvent recovering system normal running, the solvent treatment condition that can only carry out is: tower top temperature is 65 DEG C, column bottom temperature is 40 DEG C, the mass ratio of solvent furfural and stock oil is 1.5:1, and the yield of gained environment-friendly rubber extending oil is 75.7%, C
a9.8%, PCA1.51%, 8 kinds of harmful aromatic hydrocarbons total contents are 4.3mg/kg, and benzopyrene (BaP) does not measure for inspection, and character sees attached list.
Embodiment 3
To subtract three line lubricating oil distillates for stock oil, solvent treatment condition is: tower top temperature is 65 DEG C, column bottom temperature is 40 DEG C, the mass ratio of solvent furfural and stock oil is 0.5:1, from solvent seasoning tower bottom to the quantity of solvent of Extract system and the mass ratio of stock oil be than being 1.5:1, solvent recovering system smooth operation, the yield of gained environment-friendly rubber extending oil is 80.5%, C
a14.1%, PCA2.85%, 8 kinds of harmful aromatic hydrocarbons total contents are 5.6mg/kg, and benzopyrene (BaP) does not measure for inspection, and meet European Union environmental protection requirement, character sees attached list.
Subordinate list environment-friendly rubber extending oil character
Claims (1)
1. produce the method for refining solvent of rubber filling oil or lubricating oil for one kind, it is characterized in that: by the Extract pipeline of the solvent tower at industrial lubricant solvent refining unit being set up one from solvent seasoning tower bottom to the solvent line returning Extract system of Extract pipeline, partial solvent is returned Extract system;
When producing environment-friendly rubber extending oil: stock oil delivers to the bottom of solvent tower by pipeline pump; The top of solvent tower delivered to by tower top extraction solvent by pipeline pump from the bottom of solvent seasoning tower; Extract and the mixed solution from the solvent returning Extract system of the bottom of solvent seasoning tower being Extract and partial solvent of solvent extraction tower bottom, the mixed solution of Extract and partial solvent enters Extract solvent recovering system and obtains solvent, recycles; The raffinate of solvent extraction top of tower obtains environment-friendly rubber extending oil after stripping is except desolventizing;
When producing plain oil, close the solvent line returning Extract system;
The solvent quality ratio producing lubricating oil solvent is 1.5 ~ 3.5:1, and the solvent-refined solvent quality ratio of rubber filling oil is 0.5 ~ 2:1;
From solvent seasoning tower bottom to the mass ratio of the quantity of solvent returning Extract system of Extract pipeline and stock oil be 0.1 ~ 3.0:1; During production common lubricant oil base oil, this solvent line is closed, and the amount of its solvent is zero.
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| CN201310219484.4A CN104212479B (en) | 2013-06-05 | 2013-06-05 | A kind of method for refining solvent producing rubber filling oil or lubricating oil |
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| CN104212479B CN104212479B (en) | 2016-02-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611006A (en) * | 2015-01-19 | 2015-05-13 | 中国石油天然气股份有限公司 | Equipment and method for improving gassing resistance of transformer oil |
| CN105950209A (en) * | 2016-06-21 | 2016-09-21 | 苏州双湖化工技术有限公司 | Environment-friendly aromatic hydrocarbon rubber filling oil and production method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6802960B1 (en) * | 1999-03-02 | 2004-10-12 | Bp Oil International Limited | Two stage extraction oil treatment process |
| CN102399582A (en) * | 2010-09-09 | 2012-04-04 | 中国石油化工股份有限公司 | Apparatus and method for preparing distillate aromatic extract |
| CN102676212A (en) * | 2011-03-08 | 2012-09-19 | 中国石油天然气股份有限公司 | Raw oil optimization method for improving environment-friendly rubber filling oil aromatic hydrocarbon content and equipment |
-
2013
- 2013-06-05 CN CN201310219484.4A patent/CN104212479B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6802960B1 (en) * | 1999-03-02 | 2004-10-12 | Bp Oil International Limited | Two stage extraction oil treatment process |
| CN102399582A (en) * | 2010-09-09 | 2012-04-04 | 中国石油化工股份有限公司 | Apparatus and method for preparing distillate aromatic extract |
| CN102676212A (en) * | 2011-03-08 | 2012-09-19 | 中国石油天然气股份有限公司 | Raw oil optimization method for improving environment-friendly rubber filling oil aromatic hydrocarbon content and equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104611006A (en) * | 2015-01-19 | 2015-05-13 | 中国石油天然气股份有限公司 | Equipment and method for improving gassing resistance of transformer oil |
| CN105950209A (en) * | 2016-06-21 | 2016-09-21 | 苏州双湖化工技术有限公司 | Environment-friendly aromatic hydrocarbon rubber filling oil and production method |
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| CN104212479B (en) | 2016-02-10 |
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