A kind of preparation formula of high-cleanliness gasoline
Technical field
The present invention relates to a kind of vehicle fuel oil field, particularly a kind ofly can substitute the fuel of GB gasoline for the high-clean gasoline of vehicle.
Background technology
The conventional gasoline processing technology is to utilize the different boiling fractionation in addition of heterogeneity in crude oil, fractionate out different products, such as Sweet natural gas, gasoline, diesel oil, heavy oil and pitch etc., or the explained hereafter such as in addition catalysis, cracking, reformation require higher oil fuel, as aviation kerosene etc.But producing the processed oil of different boiling, different ratios, traditional technology often can not a large amount of demand of satisfying the market also greatly expend crude oil, increase the cost of cost oil, therefore, develop the gasoline dope technology according to this market requirement, directly join in processed oil, generate the label gasoline of daily need, thereby reduce the usage quantity of crude oil.
In addition, along with the raising of people's environmental protection consciousness, the vehicle emission pollution problem more and more comes into one's own.Europe, the United States, Japan and China have proposed national new gasoline standard in succession, and it has all proposed strict regulation and restriction to sulphur content, benzene content, aromaticity content, olefin(e) centent and oxygen level.Because motor vehicle emission is one of topsoil main source, it is always in rising trend that the contamination level of vehicular emission accounts for the topsoil ratio, along with China's automobile production amount and recoverable amount constantly increase, Abgasgesetz is increasingly strict, and society is to improving fuel oil quality, using the cry of clean fuel more and more high.
In order further to reduce the tail gas pollution that brings due to incomplete combustion, people, the important directions of oxygen containing clean fuel as fuel research from now on, mainly concentrate on and use alcohols and ethers to add component as gasoline gradually.The industrial chemicals that is easy to get greatly because of the methyl alcohol amount of being, so, methyl alcohol becomes main research direction as the exploitation of automobile fuel, but experimental results demonstrate: methyl alcohol can not directly replace gasoline to be used for motor car engine fuel, this is because the lower boiling impact of methyl alcohol directly has influence on startup and the acceleration of automobile.Therefore, in the research of high-clean gasoline, often use methyl alcohol and gasoline miscible, and add associated additives.
Chinese patent 200410054960.2 discloses a kind of blended gasoline that contains methyl alcohol, and its component comprises: petroleum naphtha, xylol, toluene, methyl alcohol, Virahol, C9+ petroleum hydrocarbon, iso-pentane, methyl tertiary butyl ether or and tertbutyl ether.The shortcoming of this blended gasoline is, the content of the petroleum naphtha take oil as raw material is higher, like this reducing oil consumption, to reduce effect aspect the dependence of oil be not clearly, in addition, selected methyl tertiary butyl ether in component, because making it very easily pass soil, itself characteristic enters underground water, just have strong peculiar smell and contain a small amount of methyl tertiary butyl ether in tap water, will produce stimulation nose and throat if human body sucks a small amount of methyl tertiary butyl ether, cause headache, nauseating and dizzy.So select methyl tertiary butyl ether very undesirable as the environment protecting of blend component.
In addition, because methanol gasoline usually exists and do not dissolve each other, demixing phenomenon when configuring, the part evaporation causes vapour lock to make running of an engine intermittency occur in use, be short of power, and methyl alcohol mixes and do not dissolve each other with other gasoline, the phenomenons such as layering, be difficult to produce on a large scale and promote.
Purpose of the present invention is exactly for above shortcoming, provides a kind of methanol usage large, and production cost is low, and is not stratified, stable performance, and octane value is high, without vapour lock, and can mix the high-clean gasoline that uses with other conventional gasoline arbitrary proportions.
Summary of the invention
The invention provides that a kind of environment protecting is good, cost is lower, stable performance, need not to use the preparation method of clean gasoline and this clean gasoline of methyl tertiary butyl ether.
A kind of preparation formula of high-cleanliness gasoline, it is prepared from by following component by weight:
Methyl alcohol 10-20 part;
Gasoline 20-50 part;
Petroleum naphtha 30-50 part;
Naphthenate 20-30 part of mishmetal;
C5 fraction 20-35 part;
Mixed benzene 5-10 part.
Methyl alcohol, gasoline, petroleum naphtha, naphthenate, C5 fraction, mixed each component of benzene, by said ratio, are fully mixed in airtight Mixer pot, through check, make.
Wherein, methanol purity is more than 95%; Gasoline is regular gasoline, can be 93#, 95# or 97#; Petroleum naphtha has the characteristics such as cut is light, alkane, naphthene content is high, roadholding good, heavy metal content is low, sulphur content is low, toxicity is less.The naphthenate of mishmetal refers to the mixing of arbitrary proportion of the naphthenate of the lanthanide series metals such as lanthanum naphthenate, cerium naphthenate; The purity of mixed benzene is 99.5%http: //www.chemworld.com.cn/price_trade.jsp? kid=1205043.
The octane enhancing additive that the present invention adopts adopts the naphthenate of mishmetal, than simple use 2-3 point of the more than enough raising of a kind of energy wherein, successful.Adopt in addition C5 fraction, the mixed synergistic pattern of benzene in component, meet boiling range, the index of correlation requirements such as density, also significantly reduce than toxic and harmful in the tail gas of same index product discharging.
Beneficial effect of the present invention is: effectively improved the octane value of methyl alcohol, gasoline and petroleum naphtha blending ingredients by adding the octane enhancing additives such as naphthenate, made it to reach the GB requirement.The production operation operational path is simple and easy to do, and cost is low, and is easy to use, sufficient combustion, and automobile oil-way is carbon deposit not, and noxious gas emission is few; Dynamic performance, with suitable with the label regular gasoline, can be mixed and use with any ratio with regular gasoline, ethanol petrol, need not automobile is done any change; Not water funk, easy cold-starting.
Embodiment
Following embodiment is to further illustrating of inventing, but the present invention is not limited with embodiment.
Embodiment 1
A kind of preparation formula of high-cleanliness gasoline, it is prepared from by following component by weight:
15 parts of methyl alcohol, 20 parts, gasoline, 30 parts of petroleum naphthas, 20 parts of the naphthenates of mishmetal, 40 parts of C5 fractions, 5 parts of mixed benzene.
Each component, by said ratio, is fully mixed in airtight Mixer pot, through check, make.
The performance index of gained high-clean gasoline are as follows:
Test item |
The prior art index |
Index of the present invention |
Research octane number (RON) |
93 |
95 |
Sulphur content (μ g/g) |
35 |
9 |
Copper corrosion (50 ℃, 4h), level |
1a |
1a |
Mechanical impurity (%) |
Nothing |
Nothing |
Existent gum (mg/100ml) |
4.07 |
2.95 |
Lead content (g/L) |
0.005 |
0.001 |
Manganese content (g/L) |
0.017 |
0.016 |
Iron level (g/L) |
0.01 |
0.005 |
Quantity discharged |
|
|
Particulate matter PM/g.km
-1 |
0.05 |
0.035 |
HC+NO/g.km
-1 |
0.5 |
0.2 |
CO/g.km
-1 |
1.8 |
1.2 |
Embodiment 2
A kind of preparation formula of high-cleanliness gasoline, it is prepared from by following component by weight:
10 parts of methyl alcohol, 30 parts, gasoline, 35 parts of petroleum naphthas, 25 parts of the naphthenates of mishmetal, 30 parts of C5 fractions, 8 parts of mixed benzene.
Each component, by said ratio, is fully mixed in airtight Mixer pot, through check, make.
Embodiment 3
A kind of preparation formula of high-cleanliness gasoline, it is prepared from by following component by weight:
20 parts of methyl alcohol, 50 parts, gasoline, 35 parts of petroleum naphthas, 25 parts of the naphthenates of mishmetal, 30 parts of C5 fractions, 8 parts of mixed benzene.
Each component, by said ratio, is fully mixed in airtight Mixer pot, through check, make.
Test item |
The prior art index |
Index of the present invention |
Research octane number (RON) |
93 |
95 |
Sulphur content (μ g/g) |
35 |
9 |
Copper corrosion (50 ℃, 4h), level |
1a |
1a |
Mechanical impurity (%) |
Nothing |
Nothing |
Existent gum (mg/100ml) |
4.07 |
2.96 |
Lead content (g/L) |
0.005 |
0.002 |
Manganese content (g/L) |
0.017 |
0.015 |
Iron level (g/L) |
0.01 |
0.005 |
Quantity discharged |
|
|
Particulate matter PM/g.km
-1 |
0.05 |
0.032 |
HC+NO/g.km
-1 |
0.5 |
0.19 |
CO/g.km
-1 |
1.8 |
1.18 |
Embodiment 4
10 parts of methyl alcohol, 30 parts, gasoline, 35 parts of petroleum naphthas, 20 parts of the naphthenates of mishmetal, 35 parts of C5 fractions, 10 parts of mixed benzene.
Each component, by said ratio, is fully mixed in airtight Mixer pot, through check, make.