CN1062585C - Method for producing lubricating oil base oil and wax for food - Google Patents
Method for producing lubricating oil base oil and wax for food Download PDFInfo
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- CN1062585C CN1062585C CN96109767A CN96109767A CN1062585C CN 1062585 C CN1062585 C CN 1062585C CN 96109767 A CN96109767 A CN 96109767A CN 96109767 A CN96109767 A CN 96109767A CN 1062585 C CN1062585 C CN 1062585C
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- dewaxing
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Abstract
The present invention relates to a method for producing base oil for lubricating oil and paraffin wax for foods by using hydrocracked tail oil as raw materials. The hydrocracked tail oil is dewaxed and deoiled by solvents so as to separate paraffin wax from oil in the raw materials, and then the paraffin wax and the oil are refined by white clay to obtain qualified base oil for lubricating oil and qualified paraffin wax for foods. The present invention has the advantages of reasonable resource utilization, low investment, high production flexibility, etc.
Description
The invention relates to the method for producing lubricant base and food grade paraffin wax by petroleum cuts.
The main body of paraffin is a normal paraffin, contains the aromatic hydrocarbons of a spot of isoparaffin, naphthenic hydrocarbon and trace.In addition, also contain the nonhydrocarbon component of trace, for example: sulphur, nitrogen, oxygen compound.Food grade paraffin wax generally is divided into two kinds in food paraffin wax and food product pack paraffin, and they are widely used in food product pack, and fruit and cheese are fresh-keeping, the batching of chewy gum and modulation medicine batching etc.These food grade paraffin waxs not only require purity very high, but also need remove carcinogenic substance.Therefore, in order to produce food grade paraffin wax, just need make with extra care paraffin, in the leading indicator that does not change the paraffin quality (as oleaginousness, fusing point, penetration degree, fraction, viscosity etc.) under the situation, reduce condensed-nuclei aromatics, the content of coloring material and Unstable Substance removes impurity such as sulphur, nitrogen, oxygen, improving color, smell, stability, thereby reach the requirement of food grade paraffin wax standard.
Paraffin purified method has carclazyte refining with adsorbents, percolation filtration treating, sulfuric acid treatment, hydrofining.Because condensed-nuclei aromatics polarity is very weak in the scale wax, carclazyte absorption is difficulty relatively, so clay-filteredly be not suitable for production has strict demand to condensed-nuclei aromatics content food grade paraffin wax.With clay-filtered the same, the food grade paraffin wax strict to quality, the precision of percolation filtration treating also is not enough.Though sulfuric acid treatment can obtain food grade paraffin wax, labor condition is abominable, and has a large amount of waste residues to produce, contaminate environment, so industrial production seldom adopts.The method that generally adopts both at home and abroad is hydrofining at present, as disclosed method of producing food grade paraffin wax with hydrofining among USP 4139494 and the CN 1085934A.Hydrofining can obtain the good food grade paraffin wax of quality, but the plant investment of this method is big, the process complexity, and difficult operation only is suitable for scale operation.
The hydrocracking process purpose of widespread use is to produce high-quality reforming raw oil, rocket engine fuel and special purpose diesel oil etc. in petroleum refining industry at present.In the process of hydrocracking, a small amount of only process hydrogenation being arranged but the cracked hydro carbons does not take place becomes the product that is called " hydrocracking tail oil " at last, its sulphur, and nitrogen and aromaticity content are very low, can be used as the raw material of further processing.Hydrocracking tail oil is usually as the raw material of producing fine lubricant base or white oil, as disclosed method among CN1091150 and the CN1065479 is to be that raw material is produced lubricant base by catalytic dewaxing with the hydrocracking tail oil, in fact in the hydrocracking tail oil, not only contain and to be used to produce lubricant base or white oil component, also contain a certain amount of high-quality paraffinic components, but in this process, a large amount of paraffin resources are converted into other component, satisfy the specification of quality of lubricant base or white oil.Though this method can obtain more lubricant base, but can't obtain high-quality paraffin, and high-quality paraffinic components is wherein wasted, in addition, the facility investment of catalytic dewaxing process is big, complicated operation, the production handiness is little, and in being unsuitable for, small-scale production, overall economic efficiency is not high.
The objective of the invention is to propose a kind ofly produce the method for food grade paraffin wax and lubricant base, make rational use of resources, simplify production process, reduce production costs, improve flexibility of operation and overall economic efficiency with hydrocracking tail oil.
Method of the present invention is to be raw material with the hydrocracking tail oil, adopts solvent dewaxing and de-oiling that lubricant base and paraffinic components are separated, and handles lubricant base and paraffin respectively with clay-filtered method again, obtains finished lube base oil and food grade paraffin wax.Compare with existing hydrocracking tail oil catalytic dewaxing technology, when obtaining lubricant base, can obtain paraffin, this paraffin is carried out the simple clay-filtered food grade paraffin wax that can only just can obtain with hydrofinishing process of just can producing at present.
The used raw material of the present invention is common hydrocracking tail oil, also hydrocracking tail oil further can be cut as raw material, to satisfy the demand of user to the lubricant base and the different melting points paraffin of different viscosity.
The inventive method is at first hydrocracking tail oil to be carried out solvent dewaxing and de-oiling.The solvent dewaxing and de-oiling process is identical with general distillate dewaxing de-oiling technology.Its technological process is at first with raw material cooling and adding solvent, wax component wherein to be deviate from substantially, again after filtration, isolate the thick product of wax and oil, then the wax of deviating from is carried out solvent deoiling again, make oil content in paraffin wax be reduced to the standard-required that can satisfy food grade paraffin wax.Solvent can adopt C
3-C
6Aliphatic ketone and C
6～C
8The mixture of aromatic hydrocarbon also can adopt ketone and halohydrocarbon, as the mixture of methylene dichloride, ethylene dichloride as solvent.Solvent is the mixture of methylethylketone and toluene preferably.In the mixed solvent, the content of ketone is generally 40～80w%, and aromatic hydrocarbons is 20～60w%.More suitable ratio is the ketone of 60～75w% and the aromatic hydrocarbons of 25～40w%.Suitable dewaxing section solvent ratio (weight of solvent/raw material weight) is 3～5: 1, and de-oiling section solvent ratio is 1.5～2.5: 1.Dewaxing temperature is-18～-22 ℃, and the de-oiling temperature is 5～15 ℃.
The technological process of solvent dewaxing and de-oiling of the present invention is exactly the wax of the high condensation point that will remove in the hydrocracking tail oil to be contained, thereby can obtain the lubricant base that condensation point meets the demands.In dewaxing process, can also obtain gatch, it be proceeded solvent deoiling can obtain the paraffin that oleaginousness satisfies standard-required.With lubricant base and further refining finished lube base oil and the food grade paraffin wax of obtaining of paraffin.
Process for purification of the present invention is clay-filtered.Because imperfect component and impurity are less in the hydrocracking tail oil, need not with harsh technology and complicated process refinement treatment, it is clay-filtered that base oil and paraffin can carry out under identical condition, and wherein extraction temperature is 100～130 ℃, and extraction temperature is 105～115 ℃ preferably; The carclazyte consumption is 1～5w% of material quantity, and suitable add-on is 2w%; The refining time is 20～50 minutes, and the more suitable refining time is 30 minutes.The refining yield of base oil and paraffin is 96～98w%.
Hydrocracking tail oil pressed oil is through making with extra care the high-quality base oil that can obtain to meet the lube base oil standard than demulcent like this.The hydrocracking tail oil dewaxed oil is after clay-filtered, and indexs such as its color, readily carbonizable substance, light stability and condensed-nuclei aromatics all meet the quality standard of food grade paraffin wax.
Be raw material with fraction oil, the prior art that obtains food grade paraffin wax with hydrorefined method is compared, and the invention has the advantages that:
Owing to adopted the hydrocracking tail oil raw material, only through a solvent dewaxing and de-oiling and simple clay-filteredly just can obtain high-quality food grade paraffin wax and lubricant base simultaneously.The technology of the inventive method is simple, and hydrocracking tail oil is fully used, facility investment little (not needing high voltage bearing hydrofining reactor), and also simple to operate, the overall economic efficiency height is easy to produce.
Be raw material with hydrocracking tail oil, produce the prior art of lubricant base with the method for catalytic dewaxing and compare, the invention has the advantages that:
Adopt solvent dewaxing and de-oiling and clay-filtered, not only can obtain high-quality lubricant base, can obtain food grade paraffin wax simultaneously, the quality products of the inventive method is many, good in economic efficiency, cut and need not use expensive dewaxing catalyst and complicated technological process.
Below in conjunction with example the inventive method is further described.
Embodiment 1
Adopting the grand celebration hydrocracking tail oil is stock oil, and character sees Table 1.
The grand celebration hydrocracking tail oil is carried out solvent dewaxing and de-oiling, and operational condition sees Table 2.The dewaxing pressed oil that obtains of de-oiling and dewaxed oil are carried out clay-filtered respectively, condition is: temperature, 110 ℃; Time, 20 minutes; The carclazyte add-on, 2w%.The quality of refining back paraffin sees Table 3, and the quality of lubricant base sees Table 4.
Embodiment 2
Adopting the Liao Dynastyization hydrocracking tail oil is raw material, and character sees Table 1.The processing condition of solvent dewaxing and de-oiling see Table 2.Since lower through oil-containing in the slack wax that obtains that dewaxes, therefore only carry out one section de-oiling.The clay-filtered condition of pressed oil and dewaxed oil is: temperature, 120 ℃; Time, 30 minutes; The carclazyte add-on, 3w%.The character of refining back paraffin sees Table 3, and the character of lubricant base sees Table 4.
Embodiment 3
With isolated island wax oil SSOT (single hop is once by hydrocracking) tail oil is the feedstock production food grade paraffin wax.Feedstock property sees Table 1, for producing food grade paraffin wax No. 58, will carry out solvent dewaxing and de-oiling greater than 410 ℃ of fractions in the raw material, and processing condition see Table 2.The fusing point of the dewaxed oil that obtains and contain oil index and meet No. 58 fully refined wax specification requirements.Further clay-filtered to dewaxed oil and pressed oil for obtaining food grade paraffin wax and lube base oil require, condition is: temperature, 110 ℃; Time, 40 minutes; The carclazyte add-on, 3w%.The product property of refining back paraffin sees Table 3, and every index of paraffin wax product all meets the standard of food grade paraffin wax as can be seen.The product property of lubricant base sees Table 4.
Embodiment 4
Testing used raw material is the hydrocracking tail oil of Jinling Petrochemical Co.'s refinery, and its character sees Table 1.For obtaining food grade paraffin wax No. 60, be the solvent dewaxing and de-oiling raw material with tail oil greater than 429 ℃ of fractions, the main technique condition is listed in table 2.The clay-filtered condition of pressed oil and dewaxed oil is: temperature, 110 ℃; Time, 30 minutes; The carclazyte add-on, 3w%.The character that obtains product paraffin is listed in table 3, and every as can be seen index all meets the food grade paraffin wax standard No. 60.The character of product lubricant base sees Table 4.
Table 1 raw material tail oil character
Table 2 tail oil solvent dewaxing and de-oiling processing condition
Table 3 is made with extra care tail oil wax product quality
Can find out that from table 3 four kinds of paraffin that adopt the inventive method to obtain meet the quality standard of food grade paraffin wax fully, special quality on the condensed-nuclei aromatics index is more than needed to be clearly.
Table 4 lubricant base product property
Claims (4)
1. a method of producing lubricant base and food grade paraffin wax by hydrocracking tail oil is characterized in that hydrocracking tail oil solvent dewaxing degreasing process is separated, and pressed oil and dewaxed oil carry out clay-filtered respectively then; Wherein the solvent used of solvent dewaxing and de-oiling process is the C of 40～80w%
3-C
6The C of aliphatic ketone and 20～60w%
6-C
8The mixed solvent of aromatic hydrocarbons, dewaxing section solvent ratio is 3～5: 1, and de-oiling section solvent ratio is 1.5～2.5: 1, and dewaxing temperature is-18～-22 ℃, and the de-oiling temperature is 5～15 ℃.
2. according to the method for claim 1, it is characterized in that containing C in the described solvent
3～C
6Ketone 60～75w%, C
6～C
8Aromatic hydrocarbons 25～40w%.
3. according to the method for claim 1, it is characterized in that described clay-filtered temperature is 100～130 ℃, the carclazyte consumption is material quantity 1～5w%, refining 20～50 minutes time.
4. according to the method for claim 1, it is characterized in that clay-filtered temperature is 105～115 ℃, the carclazyte consumption is material quantity 2w%, the refining 30 minutes time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96109767A CN1062585C (en) | 1996-09-04 | 1996-09-04 | Method for producing lubricating oil base oil and wax for food |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96109767A CN1062585C (en) | 1996-09-04 | 1996-09-04 | Method for producing lubricating oil base oil and wax for food |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1175620A CN1175620A (en) | 1998-03-11 |
| CN1062585C true CN1062585C (en) | 2001-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96109767A Expired - Fee Related CN1062585C (en) | 1996-09-04 | 1996-09-04 | Method for producing lubricating oil base oil and wax for food |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724500A (en) * | 2009-12-10 | 2010-06-09 | 江苏高科石化股份有限公司 | Method for manufacturing full-climatic type shock absorber oil |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1312258C (en) * | 2004-01-19 | 2007-04-25 | 中国石油化工股份有限公司 | Solvent dewaxing method |
| CN1296461C (en) * | 2004-01-19 | 2007-01-24 | 中国石油化工股份有限公司 | Method for directly producing paraffin or micro crystal wax |
| CN101550357B (en) * | 2009-05-15 | 2012-11-28 | 武汉工业学院 | Method for phase-change wax decoloring |
| CN102465024B (en) * | 2010-11-05 | 2014-09-17 | 中国石油化工股份有限公司 | Hydrocracking method for producing lube base oil |
| CN102559253A (en) * | 2010-12-17 | 2012-07-11 | 中国石油天然气股份有限公司 | Method for producing API II/III base oil by using hydrocracking tail oil |
| CN102660323B (en) * | 2012-05-18 | 2014-09-17 | 海南汉地阳光石油化工有限公司 | Device and method for producing high-viscosity oil |
| CN102899075B (en) * | 2012-09-18 | 2015-05-20 | 中国石油化工股份有限公司 | Clay refining method with reduced cost for dewaxed oil |
| CN105482849A (en) * | 2015-12-07 | 2016-04-13 | 山西潞安煤基合成油有限公司 | Method for improving chroma of Fischer-Tropsch wax |
| CN107513410B (en) * | 2016-06-17 | 2019-06-18 | 中国石油化工股份有限公司 | A kind of preparation method of paper packing material wax |
| CN112745941B (en) * | 2019-10-31 | 2022-04-12 | 中国石油化工股份有限公司 | Method for producing lubricating oil base oil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065479A (en) * | 1991-04-01 | 1992-10-21 | 中国石油化工总公司石油化工科学研究院 | Produce the method for superhigh viscosity index base oil for lubricating oil |
| CN1091150A (en) * | 1993-02-11 | 1994-08-24 | 抚顺石油化工公司石油三厂 | A kind of method of production of lubricating oil base oil by hydrode-waxing |
| CN1110709A (en) * | 1994-04-19 | 1995-10-25 | 朱琏 | Method of production of transformer oil with hydrocracking tail oil |
-
1996
- 1996-09-04 CN CN96109767A patent/CN1062585C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065479A (en) * | 1991-04-01 | 1992-10-21 | 中国石油化工总公司石油化工科学研究院 | Produce the method for superhigh viscosity index base oil for lubricating oil |
| CN1091150A (en) * | 1993-02-11 | 1994-08-24 | 抚顺石油化工公司石油三厂 | A kind of method of production of lubricating oil base oil by hydrode-waxing |
| CN1110709A (en) * | 1994-04-19 | 1995-10-25 | 朱琏 | Method of production of transformer oil with hydrocracking tail oil |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724500A (en) * | 2009-12-10 | 2010-06-09 | 江苏高科石化股份有限公司 | Method for manufacturing full-climatic type shock absorber oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1175620A (en) | 1998-03-11 |
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