CN1070181A - Method for preparing n-decane from liquid wax - Google Patents
Method for preparing n-decane from liquid wax Download PDFInfo
- Publication number
- CN1070181A CN1070181A CN 92111179 CN92111179A CN1070181A CN 1070181 A CN1070181 A CN 1070181A CN 92111179 CN92111179 CN 92111179 CN 92111179 A CN92111179 A CN 92111179A CN 1070181 A CN1070181 A CN 1070181A
- Authority
- CN
- China
- Prior art keywords
- decane
- tower
- wax
- temperature
- liquid wax
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000001179 sorption measurement Methods 0.000 claims abstract description 10
- 150000001336 alkenes Chemical class 0.000 claims abstract description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 claims abstract 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002808 molecular sieve Substances 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 2
- 239000003463 adsorbent Substances 0.000 claims 2
- 239000004927 clay Substances 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052782 aluminium Inorganic materials 0.000 abstract description 6
- 239000011888 foil Substances 0.000 abstract description 6
- 239000010731 rolling oil Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- OWCFCPLYQPPJPH-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC.CCCCCCCCCC OWCFCPLYQPPJPH-UHFFFAOYSA-N 0.000 abstract 1
- 150000003568 thioethers Chemical class 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 30
- 239000000463 material Substances 0.000 description 10
- 239000012188 paraffin wax Substances 0.000 description 10
- 238000007127 saponification reaction Methods 0.000 description 5
- 241000282326 Felis catus Species 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002594 sorbent Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
本发明由液蜡制备正癸烷的方法是以C8～C15 正构烷烃为主组成的液蜡为原料，经过脱重蜡、脱轻 蜡、正癸烷精馏和吸附工序，得到正癸烷产品，还能得 到铝箔轧制油和皂化液蜡。当液蜡中含量C10正构 烷烃≥2wt％，C9、C10、C11中的异构烷烃＜2wt％、芳 烃＜1wt％，烯烃＜1.5wt％、硫化物＜30ppm时，可 以得到纯度为98.6wt％以上的正癸烷产品。该方法 生产流程简单，操作容易、生产成本低。
The method for preparing n-decane from liquid wax in the present invention uses liquid wax mainly composed of C 8 ~ C 15 normal alkanes as raw material, and undergoes heavy wax removal, light wax removal, n-decane rectification and adsorption processes to obtain n-decane Decane products, aluminum foil rolling oil and saponified liquid wax can also be obtained. When the content of C 10 normal paraffins in liquid wax is ≥ 2wt%, isoparaffins in C 9 , C 10 , and C 11 are < 2wt%, aromatics < 1wt%, olefins < 1.5wt%, and sulfides < 30ppm, you can get A n-decane product with a purity of more than 98.6 wt%. The method has the advantages of simple production process, easy operation and low production cost.
Description
The present invention relates to the preparation method of n-decane, particularly is the preparation method of raw material with liquid wax.
N-decane requires the purity height as the solvent of polypropylene catalyst.Useful alpha-methyl styrene method of hydrotreating makes, owing to be to adopt pressurization catalytic reaction to produce, therefore investment is big, the cost height, and the product component complexity that this method obtains is difficult to separate, so the quality of n-decane product also is difficult for guaranteeing.
The method that the purpose of this invention is to provide the higher n-decane product of a kind of purity of cheapness.
The method for preparing n-decane that the present invention proposes, raw material adopts liquid wax, and it is that a kind of normal paraffin that contains is main, mainly by C
8～C
15The hydrocarbon mixture that normal paraffin is formed, generally it contains C
10Normal paraffin (3～5) wt%.Raw material is through taking off heavy wax, taking off light wax, n-decane rectifying and absorption process and obtain the n-decane product.Can also obtain simultaneously aluminum foil rolling oil and saponification liquor wax product.
In taking off heavy wax operation, the tower top temperature of taking off heavy wax tower is that 200～210 ℃ of tower still temperature are 240～245 ℃, theoretical plate number 15-25, take off in the light wax operation, the tower top temperature of taking off light wax tower is 160～170 ℃, tower still temperature is 210～220 ℃, theoretical plate number 28-40, in the n-decane rectification working process, the rectifying tower tower top temperature is 170～180 ℃, tower still temperature is 185.2～185.5 ℃, theoretical plate number 35-50, take off heavy wax, the equipment that takes off light wax, n-decane rectification working process is packing tower or tray column, (0.1-0.15MPa) operation under normal pressure.The service temperature of adsorption tanks is 150～190 ℃, and pressure is 0.3～0.5MPa, and air speed is 0.5～1NM
3/ M
3Sorbent material.The used sorbent material of adsorption tanks is molecular sieve, silica gel or carclazyte.Contain C in the raw material
10The high more separation acquisition n-decane product that helps more of normal paraffin amount.
Of the present invention with C
6～C
15Normal paraffin is in master's the liquid wax, wherein C
10Normal paraffin also can obtain highly purified n-decane product in the time of can be less than 2wt%, considers economically rationally and can guarantee the quality of this product, makes its purity more than 98.6wt%, requires C in the raw material
10Normal paraffin 〉=2wt%, C
9, C
10, C
11In isoparaffin＜2wt%, aromatic hydrocarbons＜1wt%, alkene＜1000wt%, sulfide＜30ppm.The service temperature of each operation is regulated in the said temperature scope according to the component of raw material and the change of component of Ge Ta charging.
Because the raw material that the present invention adopts is the product in the petroleum refining process, raw material sources are abundant.Main rectifying and the adsorptive separation technology process of adopting, therefore little than the method investment of hydrogenation reaction, Production Flow Chart is simple, processing ease, production cost is low, and obtains the higher n-decane product of purity easily.
Accompanying drawing is a general flow chart of the present invention.
As shown in drawings, heavy wax tower 2 is taken off in liquid wax 1 adding that raw material forms as mentioned above, and tower reactor material 4 is C12～C
15Cut, tower reactor material 4 obtain low-sulfur, low fragrant aluminum foil rolling oil 14 after sending into adsorption tanks 11 desulfurization, decolouring, and cat head material material 3 behind condenser 17 is sent into and taken off light wax tower 5, and tower reactor material 7 is mainly C11～C
13Cut, tower reactor material 7 are sent into adsorption tanks 12 and obtain saponification liquor wax 15 after the decolouring desulfurization, and the cat head material that takes off light wax tower 5 is mainly C8 to C10Cut, the material 6 behind condenser 18 enters n-decane rectifying column 8, and cat head material 9 is mainly C8、C
9Cut can be made fuel oil, and tower reactor material 10 obtains n-decane product 16 behind the deolefination in the adsorption tanks 13.
The n-decane product that adopts the inventive method to produce, through applying unit analytical test result: density 0.730, bromine number 0.03 gram bromine/100 grams, residue 0.002%, moisture content 80ppm, boiling range: 172.5 ℃ of initial boiling points, do 174.6 ℃, n-decane purity 98.61wt% meets Yanshan Petrochemical Co.'s company standard. Its cost only has 1/2 of imported product price.
Embodiment 1:
As shown in table 1, raw material is C
8～C
15Normal paraffin is main liquid wax, and wherein: n-decane is 1.95wt%.C
9, C
10, C
11In isoparaffin＜2wt%, alkene＜1.5wt%, aromatic hydrocarbons＜1wt%, sulfide＜30ppm.Obtain product n-decane (purity is 98.62wt%), aluminum foil rolling oil and saponification liquor wax.
Embodiment 2:
As shown in table 2, raw material is C
8～C
15Normal paraffin is main liquid wax, and wherein: n-decane is 5.0wt%.Obtain product n-decane (purity 98.63wt%), aluminum foil rolling oil and saponification liquor wax.
Embodiment 3:
As shown in table 3, raw material is C
8～C
15Normal paraffin is main liquid wax, and wherein: n-decane is 9.6wt%, obtains product n-decane (purity is 98.99wt%), aluminum foil rolling oil and saponification liquor wax.
Table 1.
| One, takes off heavy wax tower | Two, take off light wax tower | Three, n-decane rectifying tower | ||||||
| The thing stream number | 1 | 3 | 4 | 6 | 7 | 9 | 10 | |
| The logistics title | Charging | Cat head | The tower still | Cat head | The tower still | Cat head | The tower still | |
| Temperature (℃) | 180 | 63.2 | 244.1 | 51.9 | 217.5 | 50.5 | 185.2 | |
| Pressure (MPa) | 0.120 | 0.100 | 0.126 | 0.100 | 0.125 | 0.100 | 0.125 | |
| Weight fraction | C8+C9 | 0.0030 | 0.0049 | 0 | 0.1332 | 0 | 0.9945 | 0.0120 |
| C10 | 0.0200 | 0.0324 | 0 | 0.8651 | 0.0009 | 0.0055 | 0.9862 | |
| C11 | 0.2550 | 0.4121 | 0.0010 | 0.0017 | 0.4277 | 0 | 0.0018 | |
| ≥C12 | 0.7220 | 0.5506 | 0.9990 | 0 | 0.5714 | 0 | 0 | |
| Reflux ratio | 1.0 | 25.89 | 7.54 | |||||
| Stage number | 18 | 35 | 45 | |||||
Table 2.
| One, takes off heavy wax tower | Two, take off light wax tower | Three, n-decane rectifying tower | ||||||
| The thing stream number | 1 | 3 | 4 | 6 | 7 | 9 | 10 | |
| The logistics title | Charging | Cat head | The tower still | Cat head | The tower still | Cat head | The tower still | |
| Temperature (℃) | 180 | 80.3 | 243.5 | 53.3 | 217.3 | 50.5 | 185.2 | |
| Pressure (MPa) | 0.120 | 0.100 | 0.126 | 0.100 | 0.125 | 0.100 | 0.125 | |
| Weight fraction | C8+C9 | 0.0050 | 0.0080 | 0 | 0.0884 | 0 | 0.9945 | 0.0125 |
| C10 | 0.0520 | 0.0831 | 0 | 0.9105 | 0.0009 | 0.0055 | 0.9863 | |
| C11 | 0.2500 | 0.3988 | 0.0010 | 0.0011 | 0.4083 | 0 | 0.0012 | |
| ≥C12 | 0.6930 | 0.5101 | 0.9990 | 0 | 0.5608 | 0 | 0 | |
| Reflux ratio | 1.0 | 14.04 | 11.63 | |||||
| Stage number | 16 | 33 | 40 | |||||
Table 3.
| One, takes off heavy wax tower | Two, take off light wax tower | Three, n-decane rectifying tower | ||||||
| The thing stream number | 1 | 3 | 4 | 6 | 7 | 9 | 10 | |
| The logistics title | Charging | Cat head | The tower still | Cat head | The tower still | Cat head | The tower still | |
| Temperature (℃) | 180 | 77.2 | 243.3 | 54.3 | 216.8 | 50.5 | 185.3 | |
| Pressure (MPa) | 0.120 | 0.100 | 0.126 | 0.100 | 0.125 | 0.100 | 0.125 | |
| Weight fraction | C8+C9 | 0.0060 | 0.0090 | 0 | 0.0579 | 0 | 0.9945 | 0.0090 |
| C10 | 0.0980 | 0.1464 | 0 | 0.9410 | 0.0009 | 0.0055 | 0.9899 | |
| C11 | 0.2610 | 0.3895 | 0.0010 | 0.0011 | 0.4607 | 0 | 0.0011 | |
| ≥C12 | 0.6350 | 0.4551 | 0.9990 | 0 | 0.5384 | 0 | 0 | |
| Reflux ratio | 1.0 | 9.219 | 18.19 | |||||
| Stage number | 20 | 30 | 32 | |||||
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111179 CN1027888C (en) | 1992-09-29 | 1992-09-29 | Method for preparing n-decane from liquid wax |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92111179 CN1027888C (en) | 1992-09-29 | 1992-09-29 | Method for preparing n-decane from liquid wax |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1070181A true CN1070181A (en) | 1993-03-24 |
| CN1027888C CN1027888C (en) | 1995-03-15 |
Family
ID=4945204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92111179 Expired - Fee Related CN1027888C (en) | 1992-09-29 | 1992-09-29 | Method for preparing n-decane from liquid wax |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1027888C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732883B (en) * | 2010-01-21 | 2012-05-30 | 天津天大天海化工新技术有限公司 | Adsorptive rectification tower for decoloring aromatic solvent oil and process method thereof |
| CN109553505A (en) * | 2017-09-27 | 2019-04-02 | 中国石油天然气股份有限公司 | Method for producing n-decane, n-dodecane and n-tetradecane from polyethylene wax by-product light wax oil |
| CN109628141A (en) * | 2019-01-29 | 2019-04-16 | 中科合成油技术有限公司 | A method of by F- T synthesis hydrofined oil separating monomer n-alkane |
-
1992
- 1992-09-29 CN CN 92111179 patent/CN1027888C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101732883B (en) * | 2010-01-21 | 2012-05-30 | 天津天大天海化工新技术有限公司 | Adsorptive rectification tower for decoloring aromatic solvent oil and process method thereof |
| CN109553505A (en) * | 2017-09-27 | 2019-04-02 | 中国石油天然气股份有限公司 | Method for producing n-decane, n-dodecane and n-tetradecane from polyethylene wax by-product light wax oil |
| CN109553505B (en) * | 2017-09-27 | 2021-09-28 | 中国石油天然气股份有限公司 | Method for producing n-decanone, n-dodecane and n-tetradecane from polyethylene wax byproduct light wax oil |
| CN109628141A (en) * | 2019-01-29 | 2019-04-16 | 中科合成油技术有限公司 | A method of by F- T synthesis hydrofined oil separating monomer n-alkane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1027888C (en) | 1995-03-15 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |