CN100451616C - Determination of aromatic hydrocarbon content in straight-run aviation kerosene and light diesel oil - Google Patents
Determination of aromatic hydrocarbon content in straight-run aviation kerosene and light diesel oil Download PDFInfo
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- CN100451616C CN100451616C CNB2004100841658A CN200410084165A CN100451616C CN 100451616 C CN100451616 C CN 100451616C CN B2004100841658 A CNB2004100841658 A CN B2004100841658A CN 200410084165 A CN200410084165 A CN 200410084165A CN 100451616 C CN100451616 C CN 100451616C
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- 150000004945 aromatic hydrocarbons Chemical class 0.000 title claims abstract description 22
- 239000002283 diesel fuel Substances 0.000 title claims abstract description 19
- 239000003350 kerosene Substances 0.000 title abstract description 5
- 238000002835 absorbance Methods 0.000 claims abstract description 20
- -1 alkylbenzene aromatic hydrocarbons Chemical class 0.000 claims abstract description 20
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 claims abstract description 13
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000010453 quartz Substances 0.000 claims abstract description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003245 coal Substances 0.000 claims description 13
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 238000003556 assay Methods 0.000 claims description 2
- 150000004950 naphthalene Chemical class 0.000 claims 2
- 239000012153 distilled water Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 12
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract description 10
- 238000004458 analytical method Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 6
- 239000002904 solvent Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 4
- 238000007670 refining Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 2
- 239000000523 sample Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 9
- 150000002790 naphthalenes Chemical class 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- 150000004996 alkyl benzenes Chemical class 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 238000004128 high performance liquid chromatography Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 239000002199 base oil Substances 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003269 fluorescent indicator Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000009967 tasteless effect Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000013026 undiluted sample Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
A method for measuring the content of aromatic hydrocarbon in straight-run aviation kerosene or light diesel oil and solvent naphtha produced by using the straight-run aviation kerosene or light diesel oil as raw materials belongs to the field of oil refining chemical analysis, and a sample is not treated or is properly diluted by isooctane, and the absorbance is measured at 285nm and 270nm in a 1cm quartz cuvette by using the isooctane as a reference. And substituting the average absorption coefficient of alkylbenzene aromatic hydrocarbons at 270nm and the average absorption coefficients of naphthalene aromatic hydrocarbons at 285nm and 270nm into a certain formula to calculate the contents of alkylbenzene aromatic hydrocarbons and naphthalene aromatic hydrocarbons in the sample.
Description
Technical field
The present invention is a kind of straight run boat coal or light diesel fuel and be the assay method of arene content in the solvent oil of raw material production with it, belongs to the oil-refining chemical analysis field.
Background technology
Domestic external-navigation coal or straight-run diesel oil aromatic hydrocarbons standard analysis test method have flushing, liquid-solid adsorpting column chromatogram (CLC, ASTM standard) and the SFC (ASTM standard) etc. of HPLC (IP standard), classical flushing, liquid-solid adsorpting column chromatogram magnetic substance spectrum (CLC-MS, rower, ASTM standard), classics; Arylhydrocarbon in diesel oil non-standard analysis test method has NIR, FTIR, HPLC, HPLC-GC, NMR-C13 and NMR-H etc.These methods are not the analytical instrument costlinesses, are exactly complex operation, use difficulty in the ordinary test chamber.GB/T11132 liquid petroleum product hydro carbons determination method (fluorescent indicator adsorption method) can be used for navigating coal, light diesel fuel and be the solvent oil (＜315 ℃) that raw material is produced with it, but complex operation, analysis time is long.
The employed analytical instrument low price of UV/VIS (ultraviolet-visible spectrophotometer method), all there is outfit the ordinary test chamber.In the arene content determination of solvent oil product and some chemical products, application is arranged.Wang Xiaodong is used ultraviolet spectrophotometry at isoabsorptive point 212nm wavelength place, with the m-xylene is reference material, without separation, directly measured the arene content in employed feedstock oil, intermediate product and the finished product when producing ethene, but the sample of be not suitable for navigating coal or the such aromatic hydrocarbons complicated component of light diesel fuel.Wang Xiujun etc. are to raffinate oil, navigate coal, straight-run diesel oil etc. being the solvent oil of the various models made of raw material, use the dual-wavelength ultraviolet spectrum technology, choose 260nm and 287.4nm place dual wavelength isobestic point, carry out UV scanning at 190-400nm as mononuclear aromatics.Utilize certain mathematical algorithm to set up model, monocycle and the polycyclic aromatic hydrocarbon content in the working sample simultaneously, analytical procedure is simple, but modelling process complexity.
The height of arene content directly influences the burning performance of fuel in straight-run diesel oil or the boat coal, and to atmospheric pollution generation influence in various degree.Some countries and regions are organized and have been put into effect some new regulations that arene content in the diesel oil is carried out strict restriction recently, use clean fuel, have become the inexorable trend of oil fuel development.It is very strict simultaneously to be with diesel oil or boat coal that some specialty oil productss of raw material production require wherein arene content, so arene content in diesel oil or the boat coal has also been proposed new requirement.This just press for set up a cover easy, analyze the method for aromatic hydrocarbons in diesel oil or the boat coal quickly and accurately.
Summary of the invention
The objective of the invention is to be achieved through the following technical solutions.
The not treated or process isooctane suitable dilution of sample in the 1cm quartz colorimetric utensil, is a reference with the isooctane, measures absorbance at 285nm and 270nm place.Alkyl benzene aromatic hydrocarbons is calculated the alkyl benzene aromatic hydrocarbons in the sample and the content of naphthalene series aromatics at the average absorptivity at 270nm place and the certain formula of average absorptivity substitution of naphthalene series aromatics at 285nm and 270nm place, its concrete steps are: when arene content is lower than 0.1% in the sample, naphthalene series aromatics can be ignored, sample need not dilute, with the isooctane is reference, measure the absorbance at 270nm place, calculate arene content by formula (1):
In the formula: A
270--the absorbance at----270nm place
10
6-------directly is scaled the constant of mg/kg
α
1---------alkyl benzene aromatic hydrocarbons is at the absorptivity 3.01L/g.cm at 270nm place
ρ
1----mass concentration of-----undiluted sample, g/L
B----------cuvette light path, cm
To be that the mensuration of arene content in the special solvent oil product of raw material production provides easy, analytical approach fast for straight distillation light diesel oil or boat coal and with it in the present invention.By test, it comprehensively is compared as follows with other analytical approach.
Methods analyst expense accuracy operation steps is measured aromatic hydrocarbon type
The low better simple alkyl benzene of the present invention, naphthalene series aromatics
The loaded down with trivial details total virtue of difference in the fluorescent indicator adsorption method
The well simpler various types of aromatic hydrocarbons of HPLC method height
The high better simple total virtue of NIR method
Embodiment
Embodiment 1:
In the 25ml volumetric flask, take by weighing straight distillation light diesel oil 0.0171g, be diluted to scale, shake up with the analysis pure isooctane.In the 1cm quartz colorimetric utensil, be reference with the isooctane, measure absorbance at 285nm and 270nm place respectively.Measurement result is A285=0.565; A270=0.790, the substitution following formula calculates the content of alkyl benzene aromatic hydrocarbons and naphthalene series aromatics respectively.
In the formula: A
285--the absorbance at----285nm place
100-------directly is scaled the constant of %
α
2---------naphthalene class aromatic hydrocarbons is at the absorptivity at 285nm place, 33.7L/g.cm
ρ
2----------mass concentration of sample in the cuvette, g/L
B----------cuvette light path, cm
In the formula: A
270--the absorbance at----270nm place
A
285--the absorbance at----285nm place
100-------directly is scaled the constant of %
α
1---------alkyl benzene aromatic hydrocarbons is at the average absorptivity at 270nm place, 3.01L/g.cm
α
2---------naphthalene class aromatic hydrocarbons is at the average absorptivity at 285nm place, 33.7L/g.cm
α
3---------naphthalene class aromatic hydrocarbons is at the average absorptivity at 270nm place, 30.0L/g.cm
ρ
2--------mass concentration of sample in the-cuvette, g/L
B----------cuvette light path, cm
The content W of naphthalene series aromatics
The naphthalene class(%)=2.50; The content W of alkyl benzene aromatic hydrocarbons
Alkyl benzene(%)=13.95, so the total arene content W in this straight-run diesel oil
Virtue(%)=W
The naphthalene class(%)+W
Alkyl benzene(%)=16.45.
Embodiment 2:
Taking by weighing with straight run boat coal in the 25ml volumetric flask is the aluminum foil rolling base oil 0.1468g of feedstock production, is diluted to scale with the analysis pure isooctane, shakes up.In the 1cm quartz colorimetric utensil, be reference with the isooctane, measure absorbance at 285nm and 270nm place respectively.Measurement result is A
285=0.028; A
270=0.133, the substitution following formula calculates the content of alkyl benzene aromatic hydrocarbons and naphthalene series aromatics respectively.
In the formula: A
285--the absorbance at----285nm place
100-------directly is scaled the constant of %
α
2---------naphthalene class aromatic hydrocarbons is at the absorptivity at 285nm place, 33.7L/g.cm
ρ
2----------mass concentration of sample in the cuvette, g/L
B----------cuvette light path, cm
In the formula: A
270--the absorbance at----270nm place
A
285--the absorbance at-----285nm place
100-------directly is scaled the constant of %
α
1---------alkyl benzene aromatic hydrocarbons is at the average absorptivity at 270nm place, 3.01L/g.cm
α
2---------naphthalene class aromatic hydrocarbons is at the average absorptivity at 285nm place, 33.7L/g.cm
α
3---------naphthalene class aromatic hydrocarbons is at the average absorptivity at 270nm place, 30.0L/g.cm
ρ
2--------mass concentration of sample in the-cuvette, g/L
B----------cuvette light path, cm
The content W of naphthalene series aromatics
The naphthalene class(%)=0.014; The content W of alkyl benzene aromatic hydrocarbons
Alkyl benzene(%)=0.611, so the total arene content W in this aluminum foil rolling base oil
Virtue(%)=W
The naphthalene class(%)+W
Alkyl benzene(%)=0.62.
Embodiment 3:
For a tasteless kerosene product, density 0.7903g/cm
3, in the 1cm quartz colorimetric utensil, be reference with the isooctane, sample is measured absorbance at 285nm and 270nm place respectively without dilution.Measurement result is A
285=0.000; A
270=0.143, the substitution following formula calculates the content of alkyl benzene aromatic hydrocarbons respectively.
In the formula: A
270--the absorbance at----270nm place
10
6-------directly is scaled the constant of mg/kg
α
1---------alkyl benzene aromatic hydrocarbons is at the absorptivity 3.01L/g.cm at 270nm place
ρ
1----mass concentration of-----undiluted sample, g/L
B----------cuvette light path, cm
Through calculating, the arene content in this tasteless kerosene product is 60.1mg/kg.Naphthalene class aromatic hydrocarbons can be ignored.
Claims (2)
1. the mensuration of arene content in straight run boat coal and the light diesel fuel, it is characterized in that the dilution of sample through isooctane, in the 1cm quartz colorimetric utensil, with the isooctane is reference, measure absorbance at 285nm and 270nm place, calculate the alkyl benzene aromatic hydrocarbons in the sample and the content of naphthalene series aromatics according to the absorbance of measuring, the alkyl benzene arene content calculates by formula (1), naphthalene series aromatics content calculates by formula (2)
In the formula: A
270--the absorbance at----270nm place
A
285--the absorbance at----285nm place
100-------directly is scaled the constant of %
a
1---------alkyl benzene aromatic hydrocarbons is at the average absorptivity at 270nm place, 3.01L/g.cm
a
2---------naphthalene class aromatic hydrocarbons is at the average absorptivity at 285nm place, 33.7L/g.cm
a
3---------naphthalene class aromatic hydrocarbons is at the average absorptivity at 270nm place, 30.0L/g.cm
ρ
2--------mass concentration of sample in the-cuvette, g/L
B----------cuvette light path, cm
In the formula: A
285--the absorbance at----285nm place
100-------directly is scaled the constant of %
a
2---------naphthalene class aromatic hydrocarbons is at the absorptivity at 285nm place, 33.7L/g.cm
ρ
2----------mass concentration of sample in the cuvette, g/L
B----------cuvette light path, cm.
2. assay method as claimed in claim 1 is characterized in that: it is that the absorbance of reference is 0.00 that used isooctane is sentenced distilled water at 360-230nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100841658A CN100451616C (en) | 2004-10-27 | 2004-10-27 | Determination of aromatic hydrocarbon content in straight-run aviation kerosene and light diesel oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100841658A CN100451616C (en) | 2004-10-27 | 2004-10-27 | Determination of aromatic hydrocarbon content in straight-run aviation kerosene and light diesel oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1766568A CN1766568A (en) | 2006-05-03 |
| CN100451616C true CN100451616C (en) | 2009-01-14 |
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| CNB2004100841658A Expired - Fee Related CN100451616C (en) | 2004-10-27 | 2004-10-27 | Determination of aromatic hydrocarbon content in straight-run aviation kerosene and light diesel oil |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6013114A (en) * | 1997-01-28 | 2000-01-11 | Clariant Gmbh | Environmentally friendly diesel fuel |
| CN2468050Y (en) * | 2000-05-31 | 2001-12-26 | 中国石油化工集团公司 | Gas chromatograph for analyzing aromatic hydrocarbon content of alcohol |
-
2004
- 2004-10-27 CN CNB2004100841658A patent/CN100451616C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6013114A (en) * | 1997-01-28 | 2000-01-11 | Clariant Gmbh | Environmentally friendly diesel fuel |
| CN2468050Y (en) * | 2000-05-31 | 2001-12-26 | 中国石油化工集团公司 | Gas chromatograph for analyzing aromatic hydrocarbon content of alcohol |
Non-Patent Citations (4)
| Title |
|---|
| 中红处光谱法快速测定柴油芳烃含量. 王少军，吴洪新，凌凤香.分析科学学报，第19卷第5期. 2003 |
| 中红处光谱法快速测定柴油芳烃含量. 王少军，吴洪新，凌凤香.分析科学学报，第19卷第5期. 2003 * |
| 高效液相色谱法测定石脑油中烷烃、芳烃含量. 何志勤.辽阳石油化工高等专科学校学报，第16卷第1期. 2000 |
| 高效液相色谱法测定石脑油中烷烃、芳烃含量. 何志勤.辽阳石油化工高等专科学校学报，第16卷第1期. 2000 * |
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| CN1766568A (en) | 2006-05-03 |
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