CN105717272A - Test method of gasoline octane numbers - Google Patents

Test method of gasoline octane numbers Download PDF

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Publication number
CN105717272A
CN105717272A CN201610209963.1A CN201610209963A CN105717272A CN 105717272 A CN105717272 A CN 105717272A CN 201610209963 A CN201610209963 A CN 201610209963A CN 105717272 A CN105717272 A CN 105717272A
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China
Prior art keywords
gasoline
octane number
distillation
distillation column
testing
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Granted
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CN201610209963.1A
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Chinese (zh)
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CN105717272B (en
Inventor
符杨
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CHENGDU TIANFENG CLEAN ENERGY DEVELOPMENT Co Ltd
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CHENGDU TIANFENG CLEAN ENERGY DEVELOPMENT Co Ltd
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Publication of CN105717272A publication Critical patent/CN105717272A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/22—Fuels, explosives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G25/00—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents
    • C10G25/02—Refining of hydrocarbon oils in the absence of hydrogen, with solid sorbents with ion-exchange material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
    • C10G53/02—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only
    • C10G53/08—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes plural serial stages only including at least one sorption step
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G7/00—Distillation of hydrocarbon oils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1037—Hydrocarbon fractions
    • C10G2300/104—Light gasoline having a boiling range of about 20 - 100 °C
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1037—Hydrocarbon fractions
    • C10G2300/1044—Heavy gasoline or naphtha having a boiling range of about 100 - 180 °C

Abstract

The invention discloses a test method of gasoline octane numbers. The test method comprises steps as follows: Step 1, gasoline distillation; Step 2, gasoline taken from the top of a distillation column is divided into two parts from 100 DEG C, light gasoline components are lower than 100 DEG C while heavy gasoline components are higher than 100 DEG C; Step 3, research octane numbers of the light gasoline components and the heavy gasoline components are tested respectively, when the difference between the research octane numbers is larger than 2.5, the gasoline octane numbers are not distributed uniformly, and when the difference between the research octane numbers is smaller than or equal to 2.5, the gasoline octane numbers are distributed uniformly. With the adoption of the test method of the gasoline octane numbers, whether the gasoline octane numbers are distributed uniformly or not can be evaluated through the simple test process, so that an important parameter for measuring the quality of blended gasoline is provided, and the quality of the gasoline can be quickly judged.

Description

A kind of method of testing of octane number
Technical field
The invention belongs to gasoline evaluation technology field, be specifically related to the method for testing of a kind of octane number.
Background technology
Environmental protection and limited resources are properly utilized, and then reach the purpose of sustainable development.Just current, what vehicle exhaust was serious pollutes environment, local at some, the discharge of vehicle exhaust becomes the main source of atmospheric pollution, especially the sulfur dioxide produced after the sulphides burn in fuel, becoming important polluter, the change of air is very serious, and especially some place presents with the form of acid rain.The serious main cause of vehicle emission pollution is that the gasoline components used by automobile is not reasonable, and the ratio of catalytically cracked gasoline accounts for the 80% of gasoline total amount, and sulfur content is higher.At present, the main method solving gasoline cleaning is by raw material is carried out pretreatment, then re-uses the catalyst reducing content of sulfur in gasoline, then gasoline is carried out hydrotreatment, finally improves alkane component production capacity and harmonic proportion.Through this step, although the degree that cleans of gasoline can be improved, but or the requirement that environmental conservation is improved day by day can not be met.
Octane number is gasoline representation unit of anti-knock properties in lean mixture situation, the percentage by volume of contained isobutyltrimethylmethane. in ideal fuels when being numerically equal to identical with sample anti-knock properties under prescribed conditions.Ideal fuels is made up of the mixture of isobutyltrimethylmethane. and normal heptane.Isobutyltrimethylmethane. is used as the standard that anti-knock properties are excellent, and octane number is decided to be 100；Normal heptane is used as the standard that anti-knock properties are inferior, and octane number is 0.Both hydrocarbon are mixed in different volumes ratio, the ideal fuels that octane number is by 0 to 100 can be configured to；Mix in different volumes ratio, the ideal fuels that octane number is by 0 to 100 can be configured to.In mixture, the percentage by volume of isobutyltrimethylmethane. is higher, and its capability of antidetonance is also better；When octane number test engine measures the octane number of sample, improve compression ratio to standard detonation intensity occurs, then, keep compression ratio constant, the ideal fuels selecting a certain composition is measured under same experimental condition, makes electromotor produce the detonation of same intensity.When determining, label taking reference standard fuel is made up of 70% isobutyltrimethylmethane. and 30% normal heptane as being precisely, then can assess the octane number of this formation testing equal to 70.
At present, octane number is one of most important index of gasoline, and China's GB simply defines research octane number (RON) and motor octane number, and carry out requirement gap between the two with anti-knock index can not be excessive.But it practice, gasoline is a kind of C4To C12Mixture, in GB, the octane number of regulation is the average octane number of mixture, it does not have reflect that octane number is from C4To C12Distribution situation, and same No. 93 gasoline, octane number oil consumption pockety is far longer than and is evenly distributed, so research octane number distribution situation has great importance.
The distribution of test octane number, was simply substantially estimated from the angle of gasoline component and tested in the past, and this makes gasoline compounding lack the foundation of science.Therefore, the computational methods of the test octane number distribution that, accuracy easy in the urgent need to a kind of method is high.
Summary of the invention
In view of this, present invention aims to prior art Problems existing, it is provided that the method for testing of a kind of octane number, with the problem solving the Extract from Gasoline-fueled Vehicle discharge medium sulphide content content superelevation that existing gasoline causes due to octane number skewness.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
The method of testing of a kind of octane number, comprises the following steps:
The first step: gasoline distillation, puts into the gasoline tested in the distillation column with catalyst and carries out fractional distillation, transfer in distillation column by the sour gasoline after fractional distillation, and the gasoline after desulfurization takes out from the tower top of distillation column；Pressure in distillation column is 0.2-0.5MPa, and the temperature of distillation reaction section is 120-180 DEG C；
Second step: by 100 DEG C, the gasoline taken out from the tower top of distillation column is cut into two parts, 100 DEG C front is the light component of gasoline, and after 100 DEG C is that gasoline reform is divided；
3rd step: the research octane number (RON) that the test light component of gasoline and gasoline reform are divided respectively, when the light component of gasoline and gasoline reform divide both research octane number (RON) gaps more than 2.5, then think the octane number skewness of this gasoline, when both gaps are less than or equal to 2.5, then it is assumed that this octane number is evenly distributed.
As a kind of optimal way, the catalyst that the conversion zone of catalytic distillation tower uses is molecular sieve catalyst, or with solid phosphoric acid catalyst that silica gel is carrier.
As a kind of optimal way, in the first step, sour gasoline introduces from the conversion zone of distillation column.
As a kind of optimal way, before gasoline distillation, being put in preprocessor by gasoline stocks, and load ion exchange resin in preprocessor, the temperature of its preprocessor is 45 DEG C, and pressure is 0.15MPa；Pass into again after pretreated gasoline is preheated in the conversion zone of distillation column.
Judge whether octane number is evenly distributed according to the octane number gap of weight component after gasoline distillation cutting, according to great many of experiments, it is believed that 2.5 these values are the datum marks judged.
The beneficial effects of the present invention is:
The method of testing of octane number of the present invention, by simple test process, can assess whether octane number is evenly distributed, to provide an important parameter weighing blended gasoline quality, gasoline is divided into two components before 100 DEG C of boiling ranges and after 100 DEG C of boiling ranges, when the research octane number (RON) of the two component differs by more than 2.5, then it is believed that octane number skewness, this gasoline combustion poor-performing, and dynamic property and oil consumption poor, thus quickly being judged quality of gasoline.
Detailed description of the invention
Below in conjunction with specific embodiment, the preferred embodiments of the present invention are described in detail.
A kind of method of testing of octane number, it comprises the following steps:
The first step: gasoline distillation, puts into the gasoline tested in the distillation column with catalyst and carries out fractional distillation, transfer in distillation column by the sour gasoline after fractional distillation, and the gasoline after desulfurization takes out from the tower top of distillation column；Pressure in distillation column is 0.2-0.5MPa, and the temperature in distillation reaction district is 120-180 DEG C；Wherein, before gasoline distillation, being put into by gasoline stocks equipped with in the preprocessor of ion exchange resin, the temperature of preprocessor is 45 DEG C, and pressure is 0.15MPa, passes in the conversion zone of distillation column after being preheated by pretreated gasoline again；
Sour gasoline introduces from the conversion zone of distillation column, and the catalyst that the conversion zone of catalytic distillation tower uses is molecular sieve catalyst, or with solid phosphoric acid catalyst that silica gel is carrier.
Second step: by 100 DEG C, the gasoline taken out from the tower top of distillation column is cut into two components, 100 DEG C front is the light component of gasoline, and after 100 DEG C is that gasoline reform is divided；
3rd step: the hydro carbons of different chemical structures, has different Ulva Pertusa abilities.The anti-knock properties of isobutyltrimethylmethane. (pure isooctane) are better, and octane number is given as 100；The anti-knock properties of normal heptane are poor, and octane number is given as 0.The mensuration of octane number is with isobutyltrimethylmethane. and normal heptane for ideal fuels, by standard conditions, is undertaken by matching type on laboratory standard Single Cylinder Gasoline Engine.The ratio of adjustment criteria fuel composition, makes the knock intensity that ideal fuels produces identical with sample, and now in ideal fuels, percentage by volume shared by isobutyltrimethylmethane. is exactly the octane number of sample.
Judge whether octane number is evenly distributed according to the octane number gap of weight component after gasoline distillation cutting, according to great many of experiments, it is believed that 2.5 these values are the datum marks judged.
Therefore, the research octane number (RON) that the test light component of gasoline and gasoline reform are divided respectively, the rotating speed of octane number determination instrument is 600r/min, intake air temperature is room temperature, when the light component of gasoline and gasoline reform divide both octane number gaps more than 2.5, then think the octane number skewness of this gasoline, when both gaps are less than or equal to 2.5, then it is assumed that this octane number is evenly distributed.
What finally illustrate is, preferred embodiment above is only in order to illustrate technical scheme and unrestricted, although the present invention being described in detail by above preferred embodiment, but skilled artisan would appreciate that, in the form and details it can be made various change, without departing from claims of the present invention limited range.

Claims (4)

1. a method of testing for octane number, it comprises the following steps:
The first step: gasoline distillation, puts into the gasoline tested in the distillation column with catalyst and carries out fractional distillation, transfer in distillation column by the sour gasoline after fractional distillation, and the gasoline after desulfurization takes out from the tower top of distillation column；Pressure in distillation column is 0.2-0.5MPa, and the temperature of distillation reaction section is 120-180 DEG C；
Second step: by 100 DEG C, the gasoline taken out from the tower top of distillation column is cut into two parts, 100 DEG C front is the light component of gasoline, and after 100 DEG C is that gasoline reform is divided；
3rd step: the research octane number (RON) that the test light component of gasoline and gasoline reform are divided respectively, when the light component of gasoline and gasoline reform divide both research octane number (RON) gaps more than 2.5, then think the octane number skewness of this gasoline, when both gaps are less than or equal to 2.5, then it is assumed that this octane number is evenly distributed.
2. the method for testing of octane number according to claim 1, it is characterised in that: the catalyst described in first step reactions steps is molecular sieve catalyst, or with silica gel for the solid phosphoric acid catalyst of carrier in one.
3. the method for testing of octane number according to claim 1, it is characterised in that: in first step reactions steps, sour gasoline introduces from from the conversion zone of distillation column.
4. the method for testing of octane number according to claim 1, it is characterized in that: gasoline stocks is put in preprocessor before being additionally included in gasoline distillation by this method of testing, and in preprocessor, load ion exchange resin, the temperature of its preprocessor is 45 DEG C, and pressure is 0.15MPa；Pass into again after pretreated gasoline is preheated in the conversion zone of distillation column.
CN201610209963.1A 2016-04-06 2016-04-06 A kind of test method of octane number Expired - Fee Related CN105717272B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107271400A (en) * 2017-06-23 2017-10-20 南京富岛信息工程有限公司 A kind of method of automatic addition calibration set sample
CN111026194A (en) * 2019-12-27 2020-04-17 上海神开石油仪器有限公司 Intelligent integrated control display device and method
CN112557444A (en) * 2020-12-21 2021-03-26 太仓谷航检测服务有限公司 Method for measuring octane number in gasoline

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Publication number Priority date Publication date Assignee Title
CN1583970A (en) * 2003-08-20 2005-02-23 中国石油化工股份有限公司 Desulfurizing method for distillate
CN101007965A (en) * 2006-01-27 2007-08-01 中国石油化工股份有限公司 Gasoline alkylation desulfuration method
CN101597510A (en) * 2008-06-04 2009-12-09 中国石油天然气股份有限公司 A kind of catalytic distillation method of alkylation desulfurization of gasoline
CN101928586A (en) * 2010-08-22 2010-12-29 石宝珍 Catalytic gasoline splitting method and catalytic fractionating tower
CN102465044A (en) * 2010-11-15 2012-05-23 周向进 Method for joint production of low-octane gasoline and high-octane gasoline
CN102851058A (en) * 2011-06-30 2013-01-02 中国石油天然气股份有限公司 Method for increasing octane number of catalytically cracked gasoline
CN203705434U (en) * 2014-01-16 2014-07-09 上海富友其石化科技有限公司 Gasoline octane number tester
CN104777198A (en) * 2014-01-09 2015-07-15 宋德齐 Differential comparison method octane value determinator
CN104990893A (en) * 2015-06-24 2015-10-21 南京富岛信息工程有限公司 Gasoline octane number detecting method based on similar discriminance

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1583970A (en) * 2003-08-20 2005-02-23 中国石油化工股份有限公司 Desulfurizing method for distillate
CN101007965A (en) * 2006-01-27 2007-08-01 中国石油化工股份有限公司 Gasoline alkylation desulfuration method
CN101597510A (en) * 2008-06-04 2009-12-09 中国石油天然气股份有限公司 A kind of catalytic distillation method of alkylation desulfurization of gasoline
CN101928586A (en) * 2010-08-22 2010-12-29 石宝珍 Catalytic gasoline splitting method and catalytic fractionating tower
CN102465044A (en) * 2010-11-15 2012-05-23 周向进 Method for joint production of low-octane gasoline and high-octane gasoline
CN102851058A (en) * 2011-06-30 2013-01-02 中国石油天然气股份有限公司 Method for increasing octane number of catalytically cracked gasoline
CN104777198A (en) * 2014-01-09 2015-07-15 宋德齐 Differential comparison method octane value determinator
CN203705434U (en) * 2014-01-16 2014-07-09 上海富友其石化科技有限公司 Gasoline octane number tester
CN104990893A (en) * 2015-06-24 2015-10-21 南京富岛信息工程有限公司 Gasoline octane number detecting method based on similar discriminance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107271400A (en) * 2017-06-23 2017-10-20 南京富岛信息工程有限公司 A kind of method of automatic addition calibration set sample
CN111026194A (en) * 2019-12-27 2020-04-17 上海神开石油仪器有限公司 Intelligent integrated control display device and method
CN112557444A (en) * 2020-12-21 2021-03-26 太仓谷航检测服务有限公司 Method for measuring octane number in gasoline

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