CN1296461C - Method for directly producing paraffin or micro crystal wax - Google Patents
Method for directly producing paraffin or micro crystal wax Download PDFInfo
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- CN1296461C CN1296461C CNB2004100009568A CN200410000956A CN1296461C CN 1296461 C CN1296461 C CN 1296461C CN B2004100009568 A CNB2004100009568 A CN B2004100009568A CN 200410000956 A CN200410000956 A CN 200410000956A CN 1296461 C CN1296461 C CN 1296461C
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- wax
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- 239000001993 wax Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000012188 paraffin wax Substances 0.000 title claims abstract description 20
- 239000013081 microcrystal Substances 0.000 title abstract 4
- 239000002904 solvent Substances 0.000 claims abstract description 25
- 229920002521 macromolecule Polymers 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000004200 microcrystalline wax Substances 0.000 claims abstract description 18
- 235000019808 microcrystalline wax Nutrition 0.000 claims abstract description 18
- 229920001577 copolymer Polymers 0.000 claims abstract description 13
- 238000007670 refining Methods 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000004698 Polyethylene Substances 0.000 claims abstract description 4
- -1 polyethylene Polymers 0.000 claims abstract description 4
- 229920000573 polyethylene Polymers 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 32
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 claims description 14
- 229920013639 polyalphaolefin Polymers 0.000 claims description 13
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 4
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 4
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229940043265 methyl isobutyl ketone Drugs 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- GQVCNZBQZKXBMX-UHFFFAOYSA-N butan-2-one;toluene Chemical compound CCC(C)=O.CC1=CC=CC=C1 GQVCNZBQZKXBMX-UHFFFAOYSA-N 0.000 claims description 3
- 230000006837 decompression Effects 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- XMHIUKTWLZUKEX-UHFFFAOYSA-N hexacosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCC(O)=O XMHIUKTWLZUKEX-UHFFFAOYSA-N 0.000 abstract 2
- 229920000193 polymethacrylate Polymers 0.000 abstract 1
- 229920000098 polyolefin Polymers 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 56
- 230000000052 comparative effect Effects 0.000 description 14
- 239000000706 filtrate Substances 0.000 description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 9
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 8
- 239000004711 α-olefin Substances 0.000 description 8
- 238000001914 filtration Methods 0.000 description 7
- 239000012046 mixed solvent Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000005144 thermotropism Effects 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920001228 polyisocyanate Polymers 0.000 description 2
- 239000005056 polyisocyanate Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 125000003158 alcohol group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- UEOORGIJPCCGQO-UHFFFAOYSA-N benzene;butan-2-one;toluene Chemical compound CCC(C)=O.C1=CC=CC=C1.CC1=CC=CC=C1 UEOORGIJPCCGQO-UHFFFAOYSA-N 0.000 description 1
- NUKLLCUCFXBESN-UHFFFAOYSA-N benzene;propan-2-one;toluene Chemical compound CC(C)=O.C1=CC=CC=C1.CC1=CC=CC=C1 NUKLLCUCFXBESN-UHFFFAOYSA-N 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to a method for directly producing paraffin wax or microcrystal wax. Wax containing raw oil is mixed with a dewaxing solvent and a dewaxing assistant and the mixture is cooled to-5 DEG C to-30 DEG C and is separated to obtain a wax product and dewaxed oil. The dewaxing assistant is an ashless macromolecular compound mixture containing high branched chain degree macromolecular compound and low branched chain degree macromolecular compound, wherein the high branched chain degree macromolecular compound is polymethacrylate or polyolefin and the low branched chain degree macromolecular compound is polyethylene or ethene-propylene copolymer. The method can improve the crystal structure of the wax and enhance an oil-wax separation effect so that oil containing cerate obtained in the dewaxing process does not need further deoiling and oil content can directly reach the requirements of the paraffin wax or microcrystal wax standard on the oil content after recovery. After additional refining, the cerate can be used for producing paraffin wax or microcrystalline wax which meets the paraffin wax or microcrystal wax quality standard.
Description
Technical field
The invention belongs to a kind of hydrocarbon ils solvent-dewaxing method.More particularly, the present invention is a kind of hydrocarbon ils solvent-dewaxing method that uses flocculating aids.
Background technology
Paraffin and Microcrystalline Wax have a wide range of applications in industrial and agricultural production, and industrial employing solvent dewaxing and de-oiling machinery is produced.Process is summarized as follows: gradation adds diluting solvent in lube stock, the viscosity of stock oil is reduced, stir simultaneously, crystallisation by cooling is to desired dewaxing temperature, the mixed serum of oil, wax and solvent is carried out filtering separation obtain filtrate and oil-containing slack wax in rotary drum filter.Obtain pressed oil after filtrate is reclaimed, the oil-containing slack wax continues use solvent cut, and elevated temperature gradually, through rotary drum filter filtering separation once more, is called one section de-oiling, and filtrate obtains sweat oil after reclaiming, and gets dewaxed oil after slack wax reclaims.If the wax oleaginousness that one section de-oiling obtains does not reach the requirement of wax product quality standard, will repeat above de-oiling step, be called two sections de-oilings.The general flow process that adopts two sections de-oilings of one section dewaxing of industrial production, the dewaxing section mainly removes the wax in the raw material, obtains pressed oil, and the de-oiling section is mainly removed the oil in the slack wax, satisfies the requirement of wax product to oleaginousness.Because production process is long, the solvent usage quantity is big and it is high to reclaim energy consumption, cause the production cost height of paraffin and Microcrystalline Wax.Wax oil for low wax content, because wax content is low, and production cost height and slack wax are when continuing dilution de-oiling filtration, make that because of the filter inlet amount is little the filter smooth operation is relatively poor, so when the wax oil of the low wax content of processing, slack wax is not produced paraffin or Microcrystalline Wax usually, but as the raw material of catalytic cracking, the good raw material of part producing paraffin and Microcrystalline Wax is wasted.
US4,728,414 mixtures with two kinds of polyalkyl methacrylates are auxiliary agent, and a kind of is dystectic polyalkyl methacrylate (fusing point is 50～80 ℃, uses the alcohol of C24), another kind is that (fusing point is-30～50 ℃ to low-melting polyalkyl methacrylate, use the alcohol of C8-20), the ratio of mixture of two kinds of materials is 10: 90-90: 10, add-on is 0.01-2.0%, filtration velocity and yield dewaxed oil be can improve after adding agent, but the oleaginousness of slack wax and the production of wax product do not mentioned.
CN1023128C discloses a kind of by the method for two kinds of polyacrylic ester mixing as auxiliary agent, the polymkeric substance that a kind of polyisocyanate polyaddition that generates for vinylformic acid and alcohol forms, another kind is for methacrylic acid and contain the polymkeric substance that the polyisocyanate polyaddition that alcohol generated of side chain more than 10% forms, the ratio of mixture of two kinds of materials is 1: 20-20: 1, and add-on is 0.01-1%.But the oleaginousness of this method slack wax after adding auxiliary agent is still very high, with wax product the requirement of oleaginousness is compared to fall far short.
Summary of the invention
The objective of the invention is on the basis of existing solvent dewaxing technology, a kind of solvent dewaxing process method that makes used additives is provided, the wax oil that makes low wax content is after solvent dewaxing, and the oil-containing slack wax does not need further to carry out solvent deoiling, and oleaginousness directly satisfies the requirement of paraffin or Microcrystalline Wax.
Method provided by the invention comprises: waxy feeds oil with after dewaxing solvent, dewaxing agent mix, cool off this mixture to-5 ℃～-30 ℃, and separation obtains wax product and pressed oil earlier after furfural treatment or hydrofining again.Described dewaxing agent is the mixture of ashless macromolecular compound, form by high side chain degree, low side chain degree two family macromolecule compounds, wherein high side chain degree macromolecular compound is the poly-alpha olefins of 8-40 for the free carbon atomicity, low side chain degree macromolecular compound is polyethylene and/or ethylene-propylene copolymer, the weight ratio of high side chain degree, low side chain degree two family macromolecule compounds is 1-4 in the described dewaxing agent: 1, and the add-on of described dewaxing agent accounts for the 850-1500ppm of stock oil weight.
This method is added dewaxing agent in low wax content wax oil solvent dewaxing process, improve crystal structure of wax, improve oily wax separating effect, the oil-containing slack wax that dewaxing process is obtained does not need further de-oiling, reclaim the back oleaginousness and directly reach paraffin or Microcrystalline Wax standard, can produce the paraffin or the Microcrystalline Wax that satisfy paraffin or Microcrystalline Wax quality standard behind the post-refining the requirement of oleaginousness.
Embodiment
Method provided by the invention comprises: waxy feeds oil with after dewaxing solvent, dewaxing agent mix, cool off this mixture to-5 ℃～-30 ℃, and separation obtains wax product and pressed oil earlier after furfural treatment or hydrofining again.Described dewaxing agent is the mixture of ashless macromolecular compound, is made up of high side chain degree, low side chain degree two family macromolecule compounds, and wherein high side chain degree macromolecular compound is the poly-alpha olefins of 8-40 for the free carbon atomicity; Low side chain degree macromolecular compound is polyethylene and/or ethylene-propylene copolymer, and molecular weight is 500-150000.The weight ratio of high side chain degree, low side chain degree two family macromolecule compounds is 1-4 in the described dewaxing agent: 1, and the add-on of described dewaxing agent accounts for the 850-1500ppm of stock oil weight.
Described waxy feeds grease separation one or more the mixture in this group oil that two wires distillate, the three-way distillate that reduces pressure, decompression four line distillates, deasphalted oil constitutes that freely reduces pressure, above-mentioned raw materials dewaxes after furfural treatment or hydrofining earlier again, the initial boiling point of refining back stock oil is greater than 300 ℃, more preferably greater than 350 ℃, wax content is less than 30 weight %, preferably less than 20 weight %.
Described dewaxing solvent is the mixture of ketone and aromatic hydrocarbons, and wherein ketone is selected from this group of being made of butanone, acetone, methyl iso-butyl ketone (MIBK) one or more mixture in material, and aromatic hydrocarbons is benzene and/or toluene.As butanone-toluene mixed solvent, acetone-benzene-toluene mixed solvent, butanone-benzene-toluene mixed solvent etc.
The weight ratio of high side chain degree, low side chain degree two family macromolecule compounds is 1-4 in the described dewaxing agent: 1.Dewaxing agent joins in the stock oil and directly uses; Perhaps join dilution back use in the thinner, used thinner is the lubricant base of benzene, toluene, butanone-toluene or various raw material sources.The add-on of dewaxing agent accounts for the 850-1500ppm of stock oil weight.
This method is added the high side chain degree of dewaxing agent, low side chain degree two family macromolecule compounds in low wax content wax oil solvent dewaxing process, because the synergy of the two, improve crystal structure of wax, improve oily wax separating effect, the oil-containing slack wax that dewaxing process is obtained does not need further de-oiling, reclaim the back oleaginousness and directly reach paraffin or Microcrystalline Wax standard, can produce the paraffin or the Microcrystalline Wax that satisfy paraffin or Microcrystalline Wax quality standard behind the post-refining the requirement of oleaginousness.
The following examples will give further instruction to present method, but therefore not limit present method.
Embodiment 1
Stock oil is the deasphalted oil after the furfural treatment, and feedstock property sees Table 1, and dewaxing solvent is butanone, toluene mixed solvent (volume ratio 50: 50), adopts one section dewaxing, the technology of multipoint dilution, and total thinning ratio is 4.5: 1.
Detailed process is summarized as follows: earlier stock oil is heated to 80 ℃, add the 1500ppm dewaxing agent then in the stock oil of thermotropism, (the mixture of poly-alpha olefins and ethene, propylene copolymer, poly-alpha olefins free carbon atomicity is distributed as: the C10 alpha-olefin accounts for 10%, the C14 alpha-olefin accounts for 20%, and the C16 alpha-olefin accounts for 20%, and the C18 alpha-olefin accounts for 25%, C20～38 alpha-olefins account for 25%, and molecular weight distribution is 3000～2500000; The molecular weight distribution of ethene, propylene copolymer is 500～100000, the weight ratio of the former with the latter is 2: 2), under whipped state, add each thinner successively, and reduce temperature gradually to-20 ℃, filtration obtains dewaxed filtrate and oil-containing slack wax, and dewaxed filtrate obtains pressed oil after reclaiming, the oil-containing slack wax obtains gatch after reclaiming.
Test-results sees Table 2.By data in the table 2 as seen, adding assistant after-filtration speed has improved 70% than Comparative Examples 1, and pressed oil character remains unchanged, and the slack wax oleaginousness only is 0.8%, and melt drop temperature improves 8 ℃ than Comparative Examples 1, and satisfied No. 75 Microcrystalline Waxes are to the requirement of oleaginousness.Adopt carclazyte that slack wax is made with extra care, the character of refining back Microcrystalline Wax sees Table 3, and table 3 data show that refining back product property satisfies the quality index (seeing the petroleum chemical industry standard SH 0013-90 of the People's Republic of China (PRC)) of No. 75 Microcrystalline Wax first grade.
Comparative Examples 1
This Comparative Examples is the solvent dewaxing situation when not adding dewaxing agent.
Compare with embodiment 1, this Comparative Examples does not add dewaxing agent when solvent dewaxing, and other condition is all identical.Earlier stock oil is heated to 80 ℃, under whipped state, adds each thinner successively, and reduce temperature gradually to-20 ℃, filter and obtain dewaxed filtrate and oil-containing slack wax, dewaxed filtrate obtains pressed oil after reclaiming, and the oil-containing slack wax obtains gatch after reclaiming.
Test-results sees Table 2.By data in the table 2 as seen, the slack wax oleaginousness is up to 18.4%, and melt drop temperature only is 66 ℃.
Comparative Examples 2
This Comparative Examples is the solvent dewaxing situation when only adding single dewaxing agent poly-alpha olefins.
Compare with embodiment 1, this Comparative Examples only adds single dewaxing agent poly-alpha olefins when solvent dewaxing, and other condition is all identical.Earlier stock oil is heated to 80 ℃, add 1500ppm dewaxing agent poly-alpha olefins then in the stock oil of thermotropism, under whipped state, add each thinner successively, and reduce temperature gradually, filter and obtain dewaxed filtrate and oil-containing slack wax to-20 ℃, after dewaxed filtrate reclaims, obtain pressed oil, the oil-containing slack wax obtains gatch after reclaiming.
Test-results sees Table 2.By data in the table 2 as seen, the slack wax oleaginousness is up to 7.6%, and melt drop temperature only is 69 ℃.
Comparative Examples 3
This Comparative Examples is the solvent dewaxing situation when only adding single dewaxing agent ethene, propylene copolymer.
Compare with embodiment 1, this Comparative Examples only adds single dewaxing agent ethene, propylene copolymer when solvent dewaxing, and other condition is all identical.Earlier stock oil is heated to 80 ℃, add the 1500ppm dewaxing agent then in the stock oil of thermotropism, under whipped state, add each thinner successively, and reduce temperature gradually, filter and obtain dewaxed filtrate and oil-containing slack wax to-20 ℃, after dewaxed filtrate reclaims, obtain pressed oil, the oil-containing slack wax obtains gatch after reclaiming.
Test-results sees Table 2.By data in the table 2 as seen, the slack wax oleaginousness is up to 7.2%, and melt drop temperature only is 69 ℃.
Embodiment 2
The three-way distillate of decompression after the employing furfural treatment is a raw material, feedstock property sees Table 1, and dewaxing solvent is butanone, toluene mixed solvent (volume ratio 65: 35), adopts the technology of one section dewaxing multipoint dilution, total thinning ratio is 3.7: 1, and experimentation is substantially the same manner as Example 1.Dewaxing agent is that (poly-alpha olefins free carbon atomicity is distributed as: the C10-15 alpha-olefin accounts for 45% for the mixture of poly-alpha olefins and ethene, propylene copolymer, the C15-20 alpha-olefin accounts for 40%, the C20-30 alpha-olefin accounts for 15%, and molecular weight distribution is 3000-2500000; The molecular weight distribution of ethene, propylene copolymer is 600-100000, and the weight ratio of the former with the latter is 4: 1, and the relative stock oil of dewaxing agent add-on is 850ppm, and test-results sees Table 4.By data in the table 4 as seen, the oleaginousness of oil-containing slack wax only is 0.6%, and satisfied No. 62 waxes are to the requirement of oleaginousness.Adopt carclazyte that slack wax is made with extra care, the results are shown in Table 5.Table 5 data show that refining back product satisfies the quality index (seeing State Standard of the People's Republic of China GB 446-93) of No. 62 paraffin wax fully refined first grade.
Table 1
| Raw material | Deasphalted oil | Three-way distillate reduces pressure |
| Density, g/cm 3 | 0.8967 | 0.8742 |
| Condensation point, ℃ | 53 | 40 |
| Carbon residue, % | 0.5 | 0.0 |
| Flash-point, ℃ | 335 | 258 |
| Boiling range, ℃ | ||
| 2％ | 478 | 439 |
| 50％ | - | 472 |
| 90％ | - | 493 |
Table 2
| Embodiment 1 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 | |
| Dewaxing agent | Poly-alpha olefins and ethene, propylene copolymer (2: 2) | - | Poly-alpha olefins | Ethene, propylene copolymer |
| Relative filtration velocity, % | 170 | 100 | 140 | 130 |
| The pressed oil main character | ||||
| Pour point, ℃ | -6 | -6 | -6 | -6 |
| Viscosity (40 ℃), mm 2/s | 432 | 439 | 436 | 438 |
| The gatch main character | ||||
| Oleaginousness, % | 0.8 | 18.4 | 7.6 | 7.2 |
| Melt drop temperature, ℃ | 74 | 66 | 69 | 69 |
Table 3
| Project | Measured data | No. 75 Microcrystalline Wax first grade quality index |
| Melt drop temperature, ℃ | 74 | 72-77 |
| Oleaginousness, % | 0.8 | Be not more than 5 |
| Color, number | 2.0 | Be not more than 2.5 |
| Water soluble acid or alkali | Do not have | Do not have |
| Penetration degree, 1/10mm | 19 | Be not more than 30 |
Table 4
| Embodiment 2 | |
| Dewaxing agent | Poly-alpha olefins and ethene, propylene copolymer (4: 1) |
| The pressed oil main character | |
| Pour point, ℃ | -13 |
| Viscosity (40 ℃), mm 2/s | 63.1 |
| The gatch main character | |
| Oleaginousness, % | 0.6 |
| Fusing point, ℃ | 62 |
Table 5
| Project | Measured data | No. 62 paraffin wax fully refined first grade quality index |
| Fusing point, ℃ | 62 | 62-64 |
| Oleaginousness, % | 0.6 | Be not more than 0.8 |
| Color, number | +24 | Be not less than+22 |
| Light stability, number | 4 | Be not more than 5 |
| Penetration degree, 1/10mm | 10 | Be not more than 17 |
Claims (5)
1, the method of a kind of direct production paraffin or Microcrystalline Wax, waxy feeds oil is earlier after furfural treatment or hydrofining, mix with dewaxing solvent and dewaxing agent again, cool off this mixture to-5 ℃～-30 ℃, and separation obtains wax product and pressed oil, it is characterized in that described dewaxing agent is the mixture of ashless macromolecular compound, by high side chain degree, low side chain degree two family macromolecule compounds are formed, wherein high side chain degree macromolecular compound is the poly-alpha olefins of 8-40 for the free carbon atomicity, low side chain degree macromolecular compound is polyethylene and/or ethylene-propylene copolymer, high side chain degree in the described dewaxing agent, the weight ratio of low side chain degree two family macromolecule compounds is 1-4: 1, and the add-on of described dewaxing agent accounts for the 850-1500ppm of stock oil weight.
2,, it is characterized in that described low side chain degree macromolecular compound molecular weight is 500-150000 according to the method for claim 1.
3,, it is characterized in that described dewaxing agent joins directly use in the stock oil according to the method for claim 1; Perhaps join dilution back use in the thinner, used thinner is the lubricant base of benzene, toluene, butanone-toluene or various raw material sources.
4, according to the method for claim 1, the mixture of one or more in this group oil that it is characterized in that freely reducing pressure described waxy feeds grease separation two wires distillate, the three-way distillate that reduces pressure, decompression four line distillates, deasphalted oil constitutes, above-mentioned raw materials dewaxes after furfural treatment or hydrofining earlier again, the initial boiling point of refining back stock oil is greater than 300 ℃, and wax content is less than 30 weight %.
5, according to the method for claim 1, it is characterized in that described dewaxing solvent is the mixture of ketone and aromatic hydrocarbons, wherein ketone is selected from this group of being made of butanone, acetone, methyl iso-butyl ketone (MIBK) one or more mixture in material, and aromatic hydrocarbons is benzene and/or toluene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100009568A CN1296461C (en) | 2004-01-19 | 2004-01-19 | Method for directly producing paraffin or micro crystal wax |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100009568A CN1296461C (en) | 2004-01-19 | 2004-01-19 | Method for directly producing paraffin or micro crystal wax |
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| Publication Number | Publication Date |
|---|---|
| CN1648217A CN1648217A (en) | 2005-08-03 |
| CN1296461C true CN1296461C (en) | 2007-01-24 |
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| CNB2004100009568A Expired - Lifetime CN1296461C (en) | 2004-01-19 | 2004-01-19 | Method for directly producing paraffin or micro crystal wax |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757820B (en) * | 2011-04-28 | 2014-08-20 | 中国石油化工股份有限公司 | Solvent dewaxing method for low waxy hydrocarbon oil |
| CN102757821B (en) * | 2011-04-28 | 2014-08-20 | 中国石油化工股份有限公司 | Solvent dewaxing method for low waxy hydrocarbon oil |
| CN105112090B (en) * | 2015-09-06 | 2017-01-18 | 中国石油天然气股份有限公司 | Oil wax separating agent, preparation method thereof and oil wax separating method |
| CN107513432B (en) * | 2016-06-17 | 2019-05-17 | 中国石油化工股份有限公司 | The method for preparing high dropping point microwax |
| CN107513420B (en) * | 2016-06-17 | 2019-08-06 | 中国石油化工股份有限公司 | A kind of preparation method of wood-based plate wax |
| JPWO2021145309A1 (en) * | 2020-01-17 | 2021-07-22 | ||
| CN113736518B (en) * | 2021-09-30 | 2023-02-03 | 内蒙古伊泰煤基新材料研究院有限公司 | Deoiling method of high-melting-point Fischer-Tropsch synthetic wax |
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| US4406771A (en) * | 1982-09-29 | 1983-09-27 | Exxon Research And Engineering Co. | Solvent dewaxing waxy hydrocarbon oil distillates using a combination poly di-alkyl fumarate-vinyl acetate copolymer having pendent carbon side chain length of predominantly C22 and polyalkyl(meth-)acrylate polymer dewaxing aid |
| EP0160754A1 (en) * | 1982-09-29 | 1985-11-13 | Exxon Research And Engineering Company | Solvent dewaxing of waxy hydrocarbon distillates |
| CN1050737A (en) * | 1989-10-06 | 1991-04-17 | 罗姆有限公司化学工厂 | The process for dewaxing of waxy oil product |
| US5180483A (en) * | 1990-10-23 | 1993-01-19 | Shell Oil Company | Dewaxing process |
| CN1175620A (en) * | 1996-09-04 | 1998-03-11 | 中国石油化工总公司抚顺石油化工研究院 | Method for producing lubricating oil base oil and wax for food |
| CN1344783A (en) * | 2000-09-25 | 2002-04-17 | 中国石油化工股份有限公司 | Solvent dewaxing and de-oiling process by using filter aid |
-
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- 2004-01-19 CN CNB2004100009568A patent/CN1296461C/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4406771A (en) * | 1982-09-29 | 1983-09-27 | Exxon Research And Engineering Co. | Solvent dewaxing waxy hydrocarbon oil distillates using a combination poly di-alkyl fumarate-vinyl acetate copolymer having pendent carbon side chain length of predominantly C22 and polyalkyl(meth-)acrylate polymer dewaxing aid |
| EP0160754A1 (en) * | 1982-09-29 | 1985-11-13 | Exxon Research And Engineering Company | Solvent dewaxing of waxy hydrocarbon distillates |
| CN1050737A (en) * | 1989-10-06 | 1991-04-17 | 罗姆有限公司化学工厂 | The process for dewaxing of waxy oil product |
| US5180483A (en) * | 1990-10-23 | 1993-01-19 | Shell Oil Company | Dewaxing process |
| CN1175620A (en) * | 1996-09-04 | 1998-03-11 | 中国石油化工总公司抚顺石油化工研究院 | Method for producing lubricating oil base oil and wax for food |
| CN1344783A (en) * | 2000-09-25 | 2002-04-17 | 中国石油化工股份有限公司 | Solvent dewaxing and de-oiling process by using filter aid |
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| CN1648217A (en) | 2005-08-03 |
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