CN102127467A

CN102127467A - Ether fuel

Info

Publication number: CN102127467A
Application number: CN2010100007089A
Authority: CN
Inventors: 董书君; 陈宗勇
Original assignee: BEIJING LANKAIBO ENERGY TECHNOLOGY CO LTD
Current assignee: BEIJING LANKAIBO ENERGY TECHNOLOGY CO LTD
Priority date: 2010-01-15
Filing date: 2010-01-15
Publication date: 2011-07-20
Also published as: WO2011085665A1

Abstract

The invention relates to a novel clean fuel, in particular to a clean ether fuel. The ether fuel contains dimethyl ether, ethanol and 2,6-di-tert-buty-p-cresol. More specifically, the ether fuel can be formed by the dimethyl ether, the ethanol and the 2,6-di-tert-buty-p-cresol only. The ether fuel can replace petrol to be used for automobiles, and other vehicles or power equipment which uses petrol engines. The invention also relates to a mixed fuel which contains the ether fuel and at least one other fuel of the petrol and solvent oil.

Description

Ether fuel

Technical field

The present invention relates to a kind of novel clean fuel, particularly, a kind of ether fuel of cleaning.This ether fuel comprises dme, ethanol and 2,6 ditertiary butyl p cresol.More specifically, this ether fuel can only be made up of dme, ethanol and 2,6 ditertiary butyl p cresol.The invention still further relates to a kind of propellant combination, it comprises ether fuel of the present invention and at least a other fuel that is selected from gasoline and the solvent oil.

Background technology

As everyone knows, oil is as a kind of non-renewable resource, plays a part indispensable in the social life of a country and national defense construction.Along with improving constantly of China's living standards of the people, automobile has progressed into common people's family.For example, Beijing has just entered the epoch of 4,000,000 automobiles now.Therefore, along with the increase of automobile pollution, the needs of gasoline are also being increased day by day.The crude production rate of China can not satisfy the flourish needs of domestic economy far away.Now, China becomes crude oil net importer from crude exports state, and most of crude oil of China is dependence on import all.The aggravation of this situation will seriously restrict further developing of China's economy, even can have influence on the national defense safety of China.Therefore, need find a kind ofly to need not to use petroleum, thereby also just need not vehicle fuel from external Imported oil.

In addition, along with popularizing of automobile, a large amount of exhaust emissionss make automobile bringing people's life simultaneously easily in atmospheric environment, also bring people's various diseases, particularly respiratory tract disease.In recent years, motor vehicle exhaust becomes the people's attention focus.In order to reduce the variety of issue that motor vehicle exhaust brings, countries in the world have proposed strict requirement to vehicle exhaust, comprise that there is related request in the U.S., and there is Europe IV standard in Europe, Japan has carried out allegedly the strictest standard, and China also is equivalent to the standard of Europe III or Europe IV in implementation.And each country will be strict further for the requirement of exhaust emissions.For example, each state formulation exhaust emission standard stricter than American National Standard separately agreed by the U.S..State IV standards has been carried out in advance at the eve that hosts the Olympic Games in Beijing, and will carry out state V standard as early as possible.Therefore, need a kind of clean fuel that can substitute present employed motor spirit, this fuel is when satisfying the function of motor spirit, and exhaust emissions is clean environment firendly more.

Benzene is the carcinogens of generally acknowledging, it because evaporation and burning, exhaust emissions enter atmosphere, brings direct influence to human beings'health in gasoline.Therefore, all this index is limited in European Union, Britain, Australia and the Russian gasoline standard, general provision is for being not more than 5% (v/v).According to Beijing's provincial standard, require the content of benzene to be not more than 1.0 volume %.But as environmental requirement, national governments and appropriate authority also may propose stricter restriction.

Aromatic hydrocarbons is a kind of gasoline blender with higher octane and high heating value.But can cause the formation of carcinogens benzene after its burning, and easily increase the carbon deposit of combustion chamber and increase CO ₂Discharging.It is generally acknowledged that the content of benzene and other aromatic hydrocarbons is big more in the gasoline, then the benzene content in the products of combustion is big more.Therefore, aromaticity content will help environment because of the discharging that reduces benzene in the tail gas in the reduction gasoline.

China is a big coal country, and coal reserves is very abundant.With the abundant in coal resource conversion is that oil fuel is a research direction always.With coal conversion is ethanol, and dme also is the important directions of present coal utilization.Units such as Shaanxi New-type fuel burner company have worked out ether-base gasoline additive, this additive comprises the dme of 5-37%, the low-carbon alcohol compounds of 10-60%, the C5-10 hydrocarbon compound of 10-50%, the alkylphenol of 0.1-5% is to the alkylphenol of Soxylat A 25-7 and 0.05-0.5%.This additive is mixed with gasoline, can produce ether-base composite gasoline.Chinese invention patent application CN98112948.X has also disclosed a kind of ether-base gasoline additive, and it is made up of following component: 15.5% dme, 42% methyl alcohol, 39% benzene, 3.3% alkylphenol polyoxyethylene and 0.2%2,6-ditertbutylparacresol.Influenced by this, the annual production of China's dme can reach millions of tons at present.Yet above-mentioned two kinds of ether-base gasoline additives are because the production cost height, and all contain a large amount of benzene, make the gasoline that is added with these two kinds of ether-base gasoline additives will can't satisfy in the existing gasoline standard requirement to benzene content at all.And, think that in gasoline adding benzene will inevitably cause also that benzene content sharply raises in the gasoline combustion product, thereby environment and human body are damaged.Now, numerous dme manufacturer is in limited production owing to the product marketing problem or stops production, and waits for the difficult condition of looking around.

Therefore, if can use dme to produce clean fuel, not only do not worry raw material sources, and can solve the present problem of these producers.

Though the standard of methanol gasoline is is now issued and implemented, because the substance characteristics of methyl alcohol makes methanol gasoline still have some problems: the one, methyl alcohol engine cold-start difficulty, burning poor with respect to the volatility of gasolene ingredient, that cause the use methanol gasoline is insufficient; The 2nd, the mutual solubility of methyl alcohol and gasoline is poor, and the quality guaranteed period is short, layering apt to deteriorate; The 3rd, substitute than low (promptly needing to use about 1.6-1.7 part methyl alcohol to substitute 1 part gasoline), the 4th, if do not change engine structure, methanol gasoline burns insufficient in available engine, the dynamic property deficiency.

Ethanol petrol has obtained use in China some areas.Yet there are some problems equally in ethanol petrol, and for example the easy moisture absorption is met water stratification and caused the quality guaranteed period short, substitutes than problem such as low and be short of power.

Mainly comprise following several at the employed additive of oil products such as gasoline and diesel oil: 1) octane promoter, the combustioncharacteristics that it is used to improve gasoline improves its octane value; 2) antioxidant, it is used to improve the gasoline that contains the secondary processing component and the oxidation stability of diesel oil; 3) frostproofer is used for preventing that the rocket engine fuel micro-moisture from freezing at low temperatures, causes influencing the engine works better because of the oil transportation difficulty; 4) static inhibitor is used to improve the specific conductivity of oil products such as rocket engine fuel, prevents to cause fire because of frictional electricity when high-speed pump is carried and filter; With 5) fluidity improver, be used for changing the crystal form of diesel oil paraffin, improving the flowability of oil product when the low temperature, or the like.

The trimethyl carbinol (TBA) has good solubility, and generally the cosolvent as methyl alcohol makes the octane value that is used for increasing gasoline.Yet there are no in the prior art with the trimethyl carbinol add to contain be used in the alcoholic acid ether fuel boosting of octane rating, improve combustionproperty and alleviate ethanol moisture absorption etc.

Summary of the invention

In a first aspect of the present invention, the present invention relates to a kind of ether fuel, it comprises dme, ethanol and 2,6 ditertiary butyl p cresol.

In the preferred implementation of this first aspect, the content of dme is the 4-15 weight part in this ether fuel, and alcoholic acid content is the 85-96 weight part, 2, the content of 6-ditertbutylparacresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Further, in this ether fuel, the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Further, in this ether fuel, the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

In a kind of embodiment of this first aspect, ether fuel of the present invention is made up of dme, ethanol and 2,6 ditertiary butyl p cresol.

In a kind of embodiment of this first aspect, ether fuel of the present invention is automobile fuel.

In a kind of embodiment of this first aspect, ether fuel of the present invention is gasoline engine fuel.

In a second aspect of the present invention, the present invention relates to a kind of ether fuel, it comprises dme, ethanol, 2,6 ditertiary butyl p cresol and at least a additive that is selected from the trimethyl carbinol and succimide.

In the preferred implementation of this second aspect, the content of dme is the 4-15 weight part in this ether fuel, and alcoholic acid content is the 85-96 weight part, 2, the content of 6-ditertbutylparacresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Further, in this ether fuel, the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Further, in this ether fuel, the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

In a kind of embodiment of second aspect present invention, described additive is the trimethyl carbinol, succimide, perhaps the combination of the trimethyl carbinol and succimide.In another embodiment, when described ether fuel contained the trimethyl carbinol, t butanol content was 0.5～2 weight part, preferred 0.7～1.5 weight part, more preferably 0.8～1.2 weight part; When described ether fuel contained succimide, succimide content was the 0.005-0.02 weight part, preferred 0.006-0.015 weight part, more preferably 0.008-0.012 weight part; All wt part is all based on the dme and the ethanol of 100 weight parts.

In a kind of embodiment of this second aspect, ether fuel of the present invention is made up of dme, ethanol, 2,6 ditertiary butyl p cresol and at least a additive that is selected from the trimethyl carbinol and succimide.

In a kind of embodiment of this second aspect, ether fuel of the present invention is automobile fuel.

In a kind of embodiment of this second aspect, ether fuel of the present invention is gasoline engine fuel.

In a third aspect of the present invention, the present invention relates to a kind of propellant combination, this propellant combination comprise the ether fuel of first aspect present invention or second aspect and be selected from gasoline and No. 180 solvent oils at least a other fuel.

In the preferred implementation of a third aspect of the present invention, the content of described ether fuel is the 1-99 weight % of described propellant combination gross weight.Further, the content of described ether fuel is the 10-90 weight % of described propellant combination gross weight.Further, the content of described ether fuel is the 30-70 weight % of described propellant combination gross weight.

In the preferred implementation of third aspect present invention, described gasoline is No. 90, No. 93, No. 97, No. 100, No. 103 gasoline (wherein No. 100, No. 103 gasoline are in also not commercial production of China).

In the preferred implementation of third aspect present invention, described gasoline is methanol gasoline or ethanol petrol.

In the preferred implementation of third aspect present invention, in described propellant combination, the content of described No. 180 solvent oils is no more than 20% of described propellant combination gross weight.

In the embodiment of third aspect present invention, this propellant combination by ether fuel of the present invention and be selected from gasoline and No. 180 solvent oils at least a other fuel composition.

Therefore, the present invention includes following embodiment:

1. 1 kinds of ether fuel of embodiment comprise dme, ethanol and 2,6 ditertiary butyl p cresol.

2. the ether fuel of embodiment 1, wherein the content of dme is the 4-15 weight part, and alcoholic acid content is the 85-96 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

3. the ether fuel of embodiment 1, wherein the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

4. the ether fuel of embodiment 1, wherein the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

5. each ether fuel of embodiment 1-4, wherein said ether fuel is made up of dme, ethanol and 2,6 ditertiary butyl p cresol.

6. an ether fuel comprises dme, ethanol, 2,6 ditertiary butyl p cresol and at least a additive that is selected from the trimethyl carbinol and succimide.

7. the ether fuel of embodiment 6, wherein the content of dme is the 4-15 weight part, and alcoholic acid content is the 85-96 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

8. the ether fuel of embodiment 6, wherein the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

9. the ether fuel of embodiment 6, wherein the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

10. each ether fuel among the embodiment 6-9, wherein said additive is the trimethyl carbinol, succimide, perhaps the combination of the trimethyl carbinol and succimide.

11. each ether fuel among the embodiment 6-10, wherein when described ether fuel contained the trimethyl carbinol, t butanol content was 0.5～2 weight part, preferred 0.7～1.5 weight part, more preferably 0.8～1.2 weight part; When described ether fuel contained succimide, succimide content was the 0.005-0.02 weight part, preferred 0.006-0.015 weight part, more preferably 0.008-0.012 weight part; All wt part is all based on the dme and the ethanol of 100 weight parts.

12. each ether fuel among the embodiment 6-11, described ether fuel is made up of dme, ethanol, 2,6 ditertiary butyl p cresol and at least a additive that is selected from the trimethyl carbinol and succimide.

13. each ether fuel of embodiment 1-12, wherein said ether fuel is automobile fuel.

14. each ether fuel of embodiment 1-13, wherein said ether fuel is gasoline engine fuel.

15. a propellant combination, comprise embodiment 1-14 each ether fuel and be selected from gasoline and No. 180 solvent oils at least a other fuel.

16. the propellant combination of embodiment 15, the content of wherein said ether fuel are the 1-99 weight % of described propellant combination.

17. the propellant combination of embodiment 15 or 16, the content of wherein said ether fuel are the 10-90 weight % of described propellant combination.

18. each propellant combination of embodiment 15-17, the content of wherein said ether fuel is the 20-80 weight % of described propellant combination.

19. each propellant combination of embodiment 15-18, wherein said gasoline is No. 90, No. 93, No. 97, No. 100 or No. 103 gasoline.

20. each propellant combination of embodiment 15-19, wherein said gasoline is methanol gasoline or ethanol petrol.

21. each propellant combination of embodiment 15-20, wherein in described propellant combination, the content of described No. 180 solvent oils is no more than 20% of described propellant combination gross weight.

22. each propellant combination of embodiment 15-21, its by embodiment 1-14 each ether fuel and be selected from gasoline and No. 180 solvent oils at least a other fuel composition.

Embodiment

The present inventor is through a large amount of test and screening, finds to use the New-type fuel that comprises dme, ethanol and 2,6 ditertiary butyl p cresol to solve or part overcomes the problems referred to above of this area unexpectedly.

A first aspect of the present invention

A first aspect of the present invention relates to a kind of novel ether fuel, and this novel ether fuel is based on the fuel of dme.Particularly, this New-type fuel comprises dme, ethanol and 2,6 ditertiary butyl p cresol.

Novel ether fuel of the present invention does not use petroleum resources, and the gasoline that not only can replace deriving from oil fully acts as a fuel and is used for automotive industry, can also use the ethanol that comes from farm crop as main component.Up to now, can't reckon with that from prior art comprising dme, ethanol and 2,6 ditertiary butyl p cresol can be used as fuel as the composition of main ingredient and use, particularly can be used as vehicle fuel and make and be used for gasoline replacing.Can't reckon with at all that from prior art the ether fuel of being made up of dme, ethanol and 2,6 ditertiary butyl p cresol can replace regular price gasoline to be used for the fuel of automobile fuel or other vehicles or power-equipment fully.

Gasoline is the mixture of C4-C10 alkane normally, and contains benzene and materials such as toluene, aromatic hydrocarbons and alkene.

" gasoline " comprises regular gasoline herein, methanol gasoline and ethanol petrol.

Ether fuel of the present invention does not contain the gasoline main ingredient, and ether fuel promptly of the present invention does not contain the above hydrocarbon of C4, C4-C10 alkane for example, benzene or the like.In this article, " do not contain the above hydrocarbon of C4 " and be meant and do not have a mind to add the above hydrocarbon of C4.

Ether fuel of the present invention mainly comprises dme, ethanol and 2,6 ditertiary butyl p cresol.Generally speaking, in ether fuel of the present invention, the content of dme can be the 4-15 weight part, and alcoholic acid content can be the 85-96 weight part, the content of 2,6 ditertiary butyl p cresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Preferably, in this ether fuel, the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.More preferably, in this ether fuel, the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

Below these three kinds of components are described in detail.

Dme is a kind of colourless, tasteless and nontoxic compound.Dme is gas under normal temperature and normal pressure.Its molecular weight is 46, and oxygen level is 35, and air-fuel ratio is 9, and empty combustion heat vale of mixture is higher than diesel oil (3067/2911), and cetane value is 60 (than the high 5-12 of a diesel oil unit), and CO and HC hang down 55% and 86% respectively than gasoline in the exhaust emissions.Therefore, the ratio of combustion gasoline of dme is more complete, and products of combustion is than more environmental protection of gasoline.The combustionproperty of dme and good mechanical property, explosive power is strong, and these performances all are better than methyl tertiary butyl ether.

Ethanol is meant dehydrated alcohol in this application, its oxygen level height (about 35%), and octane value big (ethanol octane is 111, than the high 14-21 of a gasoline unit), pollutant effulent is better than gasoline.The alcoholic acid wide material sources particularly can be by fermentation method by cassava, stalk, particularly corn preparation, and cost is lower.In China, because ethanol petrol obtained using, so ethanol, do not become problem especially for the alcoholic acid supply of fuel.

Dme used in the present invention can be the twice-laid stuff of the discarded recycle of fertilizer plant from coal-based Poly-generation, wide material sources, and with low cost.

2,6 ditertiary butyl p cresol (CAS 128-37-0, molecular formula C ₁₅H ₂₄O) molecular weight is 220, and its structural formula is as follows:

2,6 ditertiary butyl p cresol is a white crystals, meets the light color flavescence, and deepens gradually.It dissolves in benzene, toluene, methyl alcohol, methylethylketone, ethanol, Virahol, sherwood oil, Toenol 1140, water insoluble and 10 ℃ of caustic soda solns.2,6 ditertiary butyl p cresol can be commercially available.

Ether fuel of the present invention has the advantage and the high-octane advantage of alcoholic acid of the high cleanburning (thereby high clean emission) of dme simultaneously, therefore, this ether fuel can have octane value height, sufficient combustion, exhaust emission is low, and raw material is easy to get and advantage with low cost.Ether fuel of the present invention can satisfy the every requirement of automobile industry to gasoline, thereby replaces gasoline commonly used to use as the fuel of automobile.

More particularly, ether fuel of the present invention also has self-cleaning characteristics.Do not wish to be subject to concrete theory, the present inventor thinks because ethanol has the good solubility energy, can effectively avoid at positions such as sparking plug, combustion chamber, valve, vapor pipe sourdine formation carbon deposit, prevent that oil circuit from stopping up, and avoid the fault that causes because of carbon deposit and obstruction, so produced automatic cleaning action.Be that ether fuel of the present invention can be finished this self-cleaning function surprisingly under the situation of not adding any other additive.

Can reach the effect of regulating octane value by regulating dme and alcoholic acid content in the ether fuel.Generally speaking, along with alcoholic acid content reduces, the octane value of ether fuel of the present invention also can decrease.But because the octane value of ethanol itself is very high, therefore, under the situation of not using octane enhancing additive, the octane value of ether fuel of the present invention all can be than higher.

The present inventor is through number of research projects, against expectation find, dme, the ethanol and 2 that contains specified proportion of the present invention, the ether fuel of 6-ditertbutylparacresol, do not containing the gasoline main ingredient, particularly the above hydrocarbon of C4 for example under the situation of benzene etc., just can use as automobile fuel, and the time of guaranteeing the quality and the inductive phase that have significantly low gum level and significantly grow.And, because ether fuel of the present invention can for example directly use as automobile fuel under the situation of benzene etc. at the hydrocarbon that does not contain more than the C4, thereby can satisfy requirement on environmental protection admirably.The preferred content of 2,6 ditertiary butyl p cresol is the 0.005-0.5 weight part, is preferably the 0.008-0.02 weight part, and 0.009-0.012 weight part more preferably is based on the dme and the ethanol total amount of 100 weight parts.

When the content of dme, ethanol and 2,6 ditertiary butyl p cresol was in above-mentioned scope, ether fuel of the present invention had effect preferably.Ether fuel of the present invention also has significantly low gum level and the significantly long time of guaranteeing the quality and inductive phase simultaneously except the advantage and high-octane advantage of alcoholic acid and self-cleaning characteristics of the high cleanburning (thereby high clean emission) that has dme as mentioned above.

Ether fuel of the present invention can not use any other additive, that is to say, ether fuel of the present invention can only be made up of dme, ethanol and 2,6 ditertiary butyl p cresol.Yet, according to the needs of concrete application, also can add other component or additive, so that further improve some performance of gained fuel.

Because novel ether fuel of the present invention is different from conventional oil (for example gasoline and diesel oil), therefore, conventional gasoline dope might not can be used in ether fuel of the present invention.Before the additive with routine is used for ether fuel of the present invention, must at first carry out compatibility test.The compatibility test here is meant that additive to be used can be dissolved in the ether fuel of the present invention, and can keep stable existence, and does not change the proterties of ether fuel of the present invention.Have only the additive that those and ether fuel of the present invention can be compatible just might be used for ether fuel of the present invention.In addition, should be noted that also the adding of additive can not influence the special performance of ether fuel of the present invention.

The regular price gasoline additive that may be used for ether fuel of the present invention comprises, for example, and catalyzer, burning agent, antioxidant, ignition dope, purification agent or the like.Through compatibility test after the assay was approved, these additives can be joined in the ether fuel of the present invention, condition is that the special performance that does not significantly influence ether fuel of the present invention nocuously gets final product.The combination that also can add additive in ether fuel of the present invention, condition are that the special performance that does not significantly influence ether fuel of the present invention nocuously gets final product.

The contriver finds by a large amount of tests, some commercially available additive product can be used for ether fuel of the present invention, the ethanol gasoline detergent produced of petrochemical industry research institute for example, additive products such as the octane promoter that many fuel of ether therewith such as fuel economizing purification agent that Si Te oil-saving agent factory in Xinxiang, Henan produces can be compatible, catalyzer, burning agent, antioxidant, ignition dope, metal passivator, inhibiter, deicing agent, anticorrosive agent, smoke suppressor.

Method for preparation ether fuel of the present invention is not particularly limited, and can obtain ether fuel of the present invention by the chemical field routine techniques.The preparation of ether fuel of the present invention comprises the adding of 2,6 ditertiary butyl p cresol and optional other additive, and dme and alcoholic acid mix.Generally speaking, 2,6 ditertiary butyl p cresol and other optional additive can be joined in the ethanol, and then mix with dme.Yet, also can carry out dme and alcoholic acid earlier and mix, and then add 2,6 ditertiary butyl p cresol and other optional additive.For the back adds additive, stir if desired, then should slowly stir.For dme and alcoholic acid mixing, can adopt absorption column of gas to obtain this mixing usually.Adopting absorption column of gas to carry out liquid, thereby the absorption of gas is obtained liquid is the routine techniques of chemical field with mixing of gas.The acquisition of ether fuel of the present invention is to adopt the method for physical absorption to obtain, and only relates to the absorption of ethanol to dme.Generally speaking, select counter-current absorption usually, finish the preparation of ether fuel of the present invention.The present invention does not have any restriction for the selection on absorption tower, can select packing tower, tray column.Equally without any restriction, the chemical engineering technicians is in the face of ethanol during to these specific purposes of absorption of gas of dimethyl ether for acceptance condition in the present invention, can be according to the basic chemical industry principle, and required relative content is selected absorption tower and acceptance condition.Usually, conventional normal temperature absorbs and can finish the absorption of ethanol to dme.

This absorption process can be summarized as follows: make gas of dimethyl ether enter from the bottom, absorption tower through measuring fixed amount equipment (as gas distributor); Meanwhile, make ethanol (perhaps being pre-mixed the ethanol of 2,6 ditertiary butyl p cresol and optional other additive) add from cat head, gas-liquid two-phase is countercurrent flow in the absorption tower, and directly and fully contact, make gas of dimethyl ether be absorbed by ethanol.According to the selection on absorption tower and the difference of efficient thereof, can adopt one way to absorb or the circulation absorption.For circulation absorbs, the ethanol that contains dme that comes out (and randomly can be contained 2 at the bottom of tower, 6-ditertbutylparacresol and other optional additive) carry again and get back to cat head and be incorporated in the tower, the gas that cat head is come out is carried again and is got back at the bottom of the tower and be incorporated in the tower, repeats the absorption process of gas of dimethyl ether thus.This multiple absorption can carry out repeatedly as required.Yet those skilled in the art also can know, the one way by the absorption tower absorbs and just can basically dme be dissolved in the ethanol, obtain required dme content and need not multiple absorption.

The stability of ether fuel of the present invention is higher than regular gasoline far away.This can be proved from inductive phase and the gum level after the ether fuel long storage time of the present invention.

The present inventor finds that ether fuel of the present invention has elevated oxygen level, low-steam pressure, low-sulfur, low benzene, low aromatic hydrocarbons and unleaded advantage.Ether fuel of the present invention can be used for existing vehicle, and need not to change engine structure.

A second aspect of the present invention

A second aspect of the present invention relates to a kind of ether fuel, comprises dme, ethanol and 2,6 ditertiary butyl p cresol; Described ether fuel also contains at least a additive that is selected from the trimethyl carbinol and the succimide.

Below describe described additive in detail.

The molecular formula of succimide (CAS:123-56-8) is C ₄H ₅NO ₂, molecular weight is 99.09, also is called succinimide, 2,5-pyrroline diketone, succsinic acid imide etc., and its structural formula is as follows:

Its product is generally colourless needle crystal or has filbert glossy thin slice.Fusing point is 123-127 ℃, and boiling point is 285-290 ℃ (easily decomposing), and flash-point is 201 ℃, and relative density is 1.412 (16 ℃).Soluble in water, alcohol or sodium hydroxide solution are insoluble to ether and chloroform etc.It is sweet to distinguish the flavor of.Succimide used in the present invention can be the business-like product of producing by any technology (as chlorination, hot adduction).

The trimethyl carbinol (TBA, tert-butyl alcohol) claim 2-methyl-2-propyl alcohol etc. again, and molecular formula is C (CH ₃) ₃OH, molecular weight are 74.12.The trimethyl carbinol is colourless crystallization, is colourless volatile liquid when having less water to exist, and the camphoraceous smell of class is arranged, and water absorbability is arranged, and is inflammable.The fusing point of the trimethyl carbinol is 25.55 ℃, and boiling point is 82.5 ℃, and relative density is 0.7867.The trimethyl carbinol dissolves in most of organic solvents, as alcohols, ester class, ketone, aromatic series and fat hydrocarbon.These character make the trimethyl carbinol become useful solvent and additive, are one of Chemicals that have extensive use.The trimethyl carbinol used in the present invention can be the business-like product of producing by any technology (producing the propylene oxide coproduction trimethyl carbinol as the indirect hydration method of iso-butylene, iso-butylene direct hydration method and Trimethylmethane/propylene conjugated oxidation).

Similarly, the present inventor against expectation finds, this contains dme, ethanol, 2,6-ditertbutylparacresol and the described at least a ether fuel that is selected from the additive in the trimethyl carbinol and the succimide, do not containing the above hydrocarbon of gasoline main ingredient, particularly C4, for example under the situation of benzene etc., just can use, and have significantly low gum level and the significantly long time of guaranteeing the quality and inductive phase as automobile fuel.And, because this ether fuel can for example directly use as automobile fuel under the situation of benzene etc. at the hydrocarbon that does not contain more than the C4, thereby can satisfy requirement on environmental protection admirably.

Ether fuel of the present invention mainly comprises dme, ethanol, 2,6 ditertiary butyl p cresol and the described at least a additive that is selected from the trimethyl carbinol and the succimide.Generally speaking, in ether fuel of the present invention, the content of dme can be the 4-15 weight part, and alcoholic acid content can be the 85-96 weight part, the content of 2,6 ditertiary butyl p cresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Preferably, in this ether fuel, the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.More preferably, in this ether fuel, the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

Though ether fuel of the present invention has automatic cleaning action, but because there is impurity in fuel itself, mix anvil cinder in production, transportation, the storage process, and the destabilization component in the fuel easily reacts, therefore generate settling easily, cause unstable idle speed, the accelerating ability variation, oil consumption increases, and noxious gas emissions such as hydrocarbon polymer, carbon monoxide and nitride increase.For further strengthening the cleaning action of ether fuel of the present invention, further increase the cleaning of oil piping system and the generation that reduces carbon on engine, ether fuel of the present invention can also contain purification agent.

The contriver finds that the ether fuel that the present invention contains dme, ethanol and 2,6 ditertiary butyl p cresol preferably can also contain the purification agent succimide as additive.Succimide contains doping region and nonpolar district, and its doping region is surrounded the formation micella with established sedimental molecule, is distributed in the fuel, reaches the purpose of cleaning; Its nonpolar district is preferentially adsorbed on metal or ion surface, has formed one deck molecule protective membrane, has prevented the aggregation of particles deposition or in the metallic surface adhesion, has played the effect that keeps clean.Therefore, succimide can play the greasy filth of removing vaporizer and crankcase system and the effect of carbon distribution, minimizing is to the pollution of atmospheric environment, reduce the discharging of CO, reduce the discharging of HC (hydrocarbon polymer), can also reduce the wearing and tearing of oil pump and oil nozzle, basic coking prevents to cremate, and the power of raising engine, thereby save energy, and the economy of raising fuel.

Up to now, tend to think succimide in the gasoline dope field owing to the thermostability deficiency, and can't when a small amount of the use, reach effective cleaning effect.Yet the present inventor against expectation finds, can use the succimide of lower level in ether fuel of the present invention, just can effectively improve the peace and quiet effect of ether fuel of the present invention.Though be not intended to be subjected to concrete theoretical restriction, the present inventor thinks, the reason that a small amount of in the present invention succimide can be played effectiveness can be done description below: first, different with the thermopositive reaction of regular price gasoline, the burning of ether fuel of the present invention is thermo-negative reaction, therefore, and during ether fuel combustion of the present invention, temperature when in-engine temperature is lower than gasoline combustion, this will reduce the decomposition of succimide.The second, owing to conventional oil, for example diesel oil and gasoline itself do not have peace and quiet effect, therefore work as succimide and are used for diesel oil and gasoline, need to use relatively large succimide, offset the peace and quiet effect reduction that the succimide pyrolytic decomposition causes.Yet in ether fuel of the present invention, because as mentioned above, this just has automatic cleaning action ether fuel of the present invention when not comprising succimide, and is therefore, less to the effective level requirement of succimide.Therefore, even because the hot conditions of engine, the effective content of succimide has reduced, and does not also influence the peace and quiet effect of succimide in ether fuel of the present invention.

In ether fuel of the present invention, when it contains succimide, gross weight in dme and methyl alcohol is 100 weight parts, the content of succimide can be the 0.005-0.02 weight part, preferably, the content of succimide is the 0.006-0.015 weight part, and more preferably the content of succimide is the 0.008-0.012 weight part.

Therefore, ether fuel of the present invention can be realized the effect of clean burning, cleaning discharging and protection vehicle.

The present inventor finds that the present invention contains the ether fuel of dme, ethanol and 2,6 ditertiary butyl p cresol when containing the trimethyl carbinol as additive, can further improve the function and the effect of this ether fuel.In ether fuel, the trimethyl carbinol can play boosting of octane rating, improve effects such as combustionproperty and alleviation ethanol moisture absorption.In the gasoline of prior art, the trimethyl carbinol just is used for the additive of gasoline in a large number, to improve the octane value of gasoline.In the application's ether fuel, the trimethyl carbinol is not only brought into play its boosting of octane rating and is improved the effect of combustionproperty, but also can dissolve in any ratio with water, forms constant boiling mixture with water, alleviate the ethanol moisture absorption thus, and in the use of Aalcohols fuel, solve the vapour lock problem.The preferred content of the trimethyl carbinol is the 0.5-2 weight part, preferred 0.7-1.5 weight part, and more preferably 0.8-1.2 weight part, 0.9-1.1 weight part most preferably is based on the dme and the ethanol total amount of 100 weight parts.

In the present invention, described additive can be present in the ether fuel of second aspect present invention in the mode of the combination of additive.For example, what described additive can be in the trimethyl carbinol and the succimide is a kind of, and promptly described additive is the trimethyl carbinol or succimide; Perhaps, described additive can be the combination of the trimethyl carbinol and succimide.In the present invention, no matter the trimethyl carbinol and succimide are to use as additive separately, still use as additive in the mode of combination, its content separately is preferably within above-mentioned scope.

When dme, ethanol, 2,6 ditertiary butyl p cresol and be selected from the trimethyl carbinol and succimide at least a each content of additive in above-mentioned scope the time, ether fuel of the present invention has effect preferably.

In a kind of embodiment of second aspect present invention, described ether fuel comprises dme, ethanol, 2,6 ditertiary butyl p cresol and the trimethyl carbinol.In another embodiment, described ether fuel comprises: the dme of 10-15 weight part, the ethanol of 85-90 weight part, 2 of 0.009-0.012 weight part, the trimethyl carbinol of 6-ditertbutylparacresol and 0.8-1.2 weight part is based on the dme and the ethanol total amount of 100 weight parts.

In a kind of embodiment of second aspect present invention, described ether fuel comprises dme, ethanol, 2,6 ditertiary butyl p cresol and succimide.In another embodiment, described ether fuel comprises: the dme of 10-15 weight part, the ethanol of 85-90 weight part, 2 of 0.009-0.012 weight part, the succimide of 6-ditertbutylparacresol and 0.008-0.012 weight part is based on the dme and the ethanol total amount of 100 weight parts.

In a kind of embodiment of second aspect present invention, described ether fuel comprises dme, ethanol, 2,6 ditertiary butyl p cresol, succimide and the trimethyl carbinol.The contriver also finds surprisingly, containing dme, ethanol, 2, in the ether fuel of 6-ditertbutylparacresol, succimide and the trimethyl carbinol, the trimethyl carbinol, succimide and 2,6-ditertbutylparacresol three can provide synergy, make that ether fuel mass of the present invention is more stable, the burning of fuel more fully, engine operating safety and power abundance.

In another embodiment, described ether fuel comprises: the dme of 10-15 weight part, the ethanol of 85-90 weight part, 0.009-0.012 2 of weight part, the trimethyl carbinol of the succimide of 6-ditertbutylparacresol, 0.008-0.012 weight part and 0.8-1.2 weight part is based on the dme and the ethanol total amount of 100 weight parts.

In a kind of embodiment of second aspect present invention, described ether fuel is made up of dme, ethanol, 2,6 ditertiary butyl p cresol and at least a additive that is selected from the trimethyl carbinol and succimide.In the ether fuel of this embodiment, each components contents can be within above-mentioned scope, promptly, the content of dme is the 4-15 weight part in this ether fuel, alcoholic acid content is the 85-96 weight part, the content of 2,6 ditertiary butyl p cresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Further, in this ether fuel, the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Further, in this ether fuel, the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.Described additive can be the trimethyl carbinol, succimide, perhaps the combination of the trimethyl carbinol and succimide.When described ether fuel contained the trimethyl carbinol, t butanol content was 0.5～2 weight part, preferred 0.7～1.5 weight part, more preferably 0.8～1.2 weight part; When described ether fuel contained succimide, succimide content was the 0.005-0.002 weight part, preferred 0.006-0.015 weight part, more preferably 0.008-0.012 weight part; All wt part is all based on the dme and the ethanol of 100 weight parts.

In a kind of embodiment of second aspect present invention, described ether fuel is made up of dme, ethanol, 2,6 ditertiary butyl p cresol and the trimethyl carbinol.In another embodiment, described ether fuel comprises: the dme of 10-15 weight part, the ethanol of 85-90 weight part, 2 of 0.009-0.012 weight part, the trimethyl carbinol of 6-ditertbutylparacresol and 0.8-1.2 weight part is based on the dme and the ethanol total amount of 100 weight parts.

In a kind of embodiment of second aspect present invention, described ether fuel is made up of dme, ethanol, 2,6 ditertiary butyl p cresol and succimide.In another embodiment, described ether fuel comprises: the dme of 10-15 weight part, the ethanol of 85-90 weight part, 2 of 0.009-0.012 weight part, the succimide of 6-ditertbutylparacresol and 0.008-0.012 weight part is based on the dme and the ethanol total amount of 100 weight parts.

The contriver also finds surprisingly, in ether fuel of the present invention, contain the trimethyl carbinol, succimide and 2 simultaneously, in the time of the 6-ditertbutylparacresol, these three kinds of components can provide synergy, make that ether fuel mass of the present invention is more stable, the burning of fuel more fully, engine operating safety and power abundance.

In a kind of embodiment of second aspect present invention, described ether fuel is made up of dme, ethanol, 2,6 ditertiary butyl p cresol, succimide and the trimethyl carbinol.In another embodiment, described ether fuel comprises: the dme of 10-15 weight part, the ethanol of 85-90 weight part, 0.009-0.012 2 of weight part, the trimethyl carbinol of the succimide of 6-ditertbutylparacresol, 0.008-0.012 weight part and 0.8-1.2 weight part is based on the dme and the ethanol total amount of 100 weight parts.

Ether fuel of the present invention can not use any other additive.Yet, according to the needs of concrete application, also can add other component or other additive, so that further improve some performance of gained fuel.

Because novel ether fuel of the present invention is different from conventional oil (for example gasoline and diesel oil), therefore, conventional gasoline dope might not can be used in ether fuel of the present invention.Before the additive with routine is used for ether fuel of the present invention, must at first carry out compatibility test.The compatibility test here is meant that additive to be used can be dissolved in the ether fuel of the present invention, and can keep stable existence, and does not change the proterties of ether fuel of the present invention.Have only the additive that those and ether fuel of the present invention can be compatible just might be used for ether fuel of the present invention.In addition, should be noted that also the adding of additive can not influence the special performance of ether fuel of the present invention, for example cleanliness etc.

Method for the ether fuel for preparing second aspect present invention is not particularly limited, and can obtain the ether fuel of second aspect present invention by the chemical field routine techniques.The preparation of the ether fuel of second aspect present invention comprises 2, the adding of 6-ditertbutylparacresol, at least a adding that is selected from the additive of the trimethyl carbinol and succimide, and under the situation that comprises other optional additive, the adding of other optional additive, and dme and alcoholic acid mixing.Generally speaking, can be with 2,6 ditertiary butyl p cresol, at least aly be selected from the additive of the trimethyl carbinol and succimide and other optional additive joins in the ethanol, and then mix with dme.Yet, also can carry out dme and alcoholic acid earlier and mix, and then add 2,6 ditertiary butyl p cresol, at least a additive of the trimethyl carbinol and succimide and other optional additive of being selected from.For the back adds additive, stir if desired, then should slowly stir.For dme and alcoholic acid mixing, can adopt absorption column of gas to obtain this mixing usually.Adopting absorption column of gas to carry out liquid, thereby the absorption of gas is obtained liquid is the routine techniques of chemical field with mixing of gas.The acquisition of ether fuel of the present invention is to adopt the method for physical absorption to obtain, and only relates to the absorption of ethanol to dme.Generally speaking, select counter-current absorption usually, finish the preparation of ether fuel of the present invention.The present invention does not have any restriction for the selection on absorption tower, can select packing tower, tray column.Equally without any restriction, the chemical engineering technicians is in the face of ethanol during to these specific purposes of absorption of gas of dimethyl ether for acceptance condition in the present invention, can be according to the basic chemical industry principle, and required relative content is selected absorption tower and acceptance condition.Usually, normal temperature absorbs and can finish the absorption of ethanol to dme.

This absorption process can be summarized as follows: make gas of dimethyl ether enter from the bottom, absorption tower through measuring fixed amount equipment (as gas distributor); Meanwhile, make ethanol (perhaps be pre-mixed 2, the ethanol of 6-ditertbutylparacresol, at least a additive that is selected from the trimethyl carbinol and succimide and optional other additive) add from cat head, gas-liquid two-phase is countercurrent flow in the absorption tower, and directly and fully contact, make gas of dimethyl ether be absorbed by ethanol.According to the selection on absorption tower and the difference of efficient thereof, can adopt one way to absorb or the circulation absorption.For circulation absorbs, the ethanol that contains dme that comes out (and randomly can be contained 2 at the bottom of tower, 6-ditertbutylparacresol, at least a additive of the trimethyl carbinol and succimide and other optional additive of being selected from) carry again and get back to cat head and be incorporated in the tower, the gas that cat head is come out is carried again and is got back at the bottom of the tower and be incorporated in the tower, repeats the absorption process of gas of dimethyl ether thus.This multiple absorption can carry out repeatedly as required.Yet those skilled in the art also can know, the one way by the absorption tower absorbs and just can basically dme be dissolved in the ethanol, obtain required dme content and need not multiple absorption.

A third aspect of the present invention

In a third aspect of the present invention, the present invention relates to a kind of propellant combination, comprise the ether fuel of the present invention first or second aspect and other fuel, for example at least a in gasoline and No. 180 solvent oils.Propellant combination of the present invention also can be used for the fuel of automobile fuel or other vehicles or power-equipment.

The situation that other fuel is respectively gasoline and No. 180 solvent oils and combination thereof describes below.

Other fuel is gasoline

The contriver finds, the ether fuel of the present invention use that can act as a fuel separately is used for engine, particularly petrol engine.Therefore, ether fuel of the present invention fully gasoline replacing be used for automobile fuel.Yet also gasoline that ether fuel of the present invention and routine can be used, and even methanol gasoline or ethanol petrol mix use, are used for the fuel of automobile fuel or other vehicles or power-equipment.Therefore, propellant combination of the present invention can comprise the ether fuel and the gasoline of first aspect present invention.

When ether fuel of the present invention and gasoline were mixed, the blending ratio of ether fuel of the present invention and gasoline can be regulated arbitrarily as required.

Generally speaking, in the propellant combination that comprises gasoline of third aspect present invention, the content of the ether fuel of the present invention first or second aspect can be for 1-99 weight %, based on the gross weight of propellant combination.Preferably, the content of the ether fuel of the present invention first or second aspect can be 10-90 weight %, and more preferably 30-70 weight % is based on the gross weight of propellant combination.Preferably, the content of gasoline should be 90-10 weight %, more preferably 70-30 weight % mutually.

The gasoline that can be used for third aspect present invention can be for example regular gasoline, and methanol gasoline or ethanol petrol, particularly motor spirit.The label of these gasoline can be for example No. 90, No. 93, No. 97, No. 100, No. 103.

In this application, regular gasoline is meant and does not add dme, methyl alcohol or alcoholic acid gasoline.Methanol gasoline and ethanol petrol are meant respectively and have added methyl alcohol or alcoholic acid gasoline.Owing to added ethanol in the ethanol petrol, when ether fuel of the present invention and ethanol petrol were mixed use, the ethanol that has in the ethanol petrol can change the dme and the proportion of ethanol of ether fuel of the present invention.Therefore,,, need to consider the ethanol content in the ethanol petrol, finally determine the blending ratio of ether fuel of the present invention and ethanol petrol according to actual conditions and purposes ether fuel of the present invention and ethanol petrol being mixed when using.Perhaps, ether fuel of the present invention and ethanol petrol are being mixed when using, according to actual conditions and purposes, need to consider the ethanol content in the ethanol petrol, can not cause that dme and alcoholic acid content ratio depart from scope of the present invention in the ether fuel of the present invention so that guarantee in the ethanol petrol that alcoholic acid is introduced.Generally speaking, in order to make the dme content of ether fuel of the present invention be in the preferable range of 4-15 (for example 5-10) weight part (with the total of 100 parts by weight of ethanol and dme), when using ethanol petrol, the blending ratio of ethanol petrol should not surpass 50%.

For example, ethanol petrol contains the ethanol of 10 weight %, mixes the ratio that should consider the dme that uses when using, guarantees the fuel performance of mixed propellant combination, and then the blending ratio of ethanol petrol should not surpass 50% of ether fuel of the present invention.

Generally speaking, the ether fuel of the present invention first or second aspect can be mixed with arbitrary proportion with regular gasoline.Preferably, the ether fuel of the present invention first or second aspect and regular gasoline are mixed with 10: 90 to 90: 10 part by weight.More preferably, ether fuel of the present invention and regular gasoline are mixed with 20: 80 to 80: 20 part by weight.More preferably, ether fuel of the present invention and regular gasoline are mixed with 30: 70 to 70: 30 part by weight.

When the blending ratio of ether fuel is up to 80%, i.e. 80 weight parts ether fuel of the present invention and the regular gasoline (for example No. 90 gasoline) of 20 weight parts when mixing, resulting propellant combination steady quality, can normal temperature preserve 1 year not stratified.

The method that contains the propellant combination of gasoline for acquisition is not specifically limited.Can obtain propellant combination by ether fuel of the present invention is mixed with gasoline.For example, ether fuel of the present invention can be joined in the gasoline, perhaps gasoline be joined in the ether fuel of the present invention, perhaps ether fuel of the present invention and gasoline be joined in the independent container simultaneously, and mix, obtain propellant combination.Can use to stir slowly and promote to mix.

As mentioned above, because the octane value of ether fuel of the present invention is higher,, therefore, can use ether fuel of the present invention to improve the label of regular gasoline usually more than 100.For example, can use ether fuel of the present invention to make No. 90 gasoline or No. 93 gasoline reach the standard of No. 93 or No. 97 gasoline respectively.

In addition, use ether fuel of the present invention can also improve the stability of regular gasoline.Generally speaking, the stability of commercially available regular gasoline is good inadequately.With ether fuel of the present invention and commercially available regular gasoline compounding, can improve the inductive phase of regular gasoline and reduce gum level.

, perhaps mix with methanol gasoline or ethanol petrol when using with 30% ratio and regular gasoline at ether fuel of the present invention, can also reach the effect that improves power and fuel saving with 20% ratio.Under the engine working conditions of same operating mode, the saving ratio of fuel can be up to more than 10%.Use ether fuel of the present invention and gasoline to be mixed, alternative ratio can be brought up to 0.7 to 1 (the alternative ratio of ethanol petrol is 1.6-1.7).Here, alternative ratio is meant the ethanol petrol of a regular gasoline needs of replacement or the weight part of ether fuel of the present invention.And, use ether fuel of the present invention, can be so that the exhaust emissions amount reduce greatly, thus excellent environment protecting is provided.

Other fuel is No. 180 solvent oils

Other fuel that is used for the propellant combination of third aspect present invention also can be No. 180 solvent oils.Therefore, propellant combination of the present invention can comprise ether fuel and No. 180 solvent oils of the present invention first or second aspect.

Solvent oil in petroleum industry, generally is meant the gasoline as solvent, comprises that catalytic reforming is raffinated oil or the straight run wet goods makes low octane rating and as the oils of solvent through fractionation or other method for refining.According to different purposes, rubber solvent naphtha is arranged, extract solvent oil and industrial solvent.In this application, solvent oil is meant refinery oil refining process front end, and promptly temperature is that 30-70 ℃ lightweight distillates composition.General petroleum spirit usually by its 98% recovered temperature or do 100% recovered temperature) be divided into the trades mark such as 70,90,120,180,190,200.

Preferably use solvent oil in this application No. 180, claim the aviation washing oil again, its refining degree is darker, and boiling range is 40～180 ℃.Use No. 180 solvent oil: the one, compatibility is good, the 2nd, and cost is low, the 3rd, and available octane value component and high volatile volatile material are arranged.

Generally speaking, in propellant combination of the present invention, the ether fuel of the present invention first or second aspect and the ratio of No. 180 solvent oils can be arbitrary proportion.Preferably, the part by weight of ether fuel and No. 180 solvent oils is 90: 10, and more preferably, the part by weight of ether fuel of the present invention and No. 180 solvent oils is 80: 20.

When the blending ratio of ether fuel was up to 80%, promptly No. 180 oil miscible solvents of the ether fuel of 80 weight part the present invention first or second aspect and 20 weight parts were fashionable, resulting propellant combination steady quality, can normal temperature preserve 1 year not stratified.

The propellant combination that comprises ether fuel of the present invention and No. 180 solvent oils can be used as fuel, and particularly octane value reaches the fuel that can be used as automobile fuel or other vehicles or power-equipment more than No. 90.

Method for the propellant combination that obtains to contain No. 180 solvent oils and ether fuel of the present invention is not specifically limited.Can obtain propellant combination by ether fuel of the present invention is mixed with No. 180 solvent oils.For example, ether fuel of the present invention can be joined in the solvent oil, perhaps solvent oil be joined in the ether fuel of the present invention, perhaps ether fuel of the present invention and solvent oil be joined in the independent container simultaneously, and mix, obtain propellant combination.Can use slow stirring to promote to mix.

Other fuel is the combination of gasoline and No. 180 solvent oils

Propellant combination of the present invention also can comprise the combination of gasoline and No. 180 solvent oils except ether fuel of the present invention.

All has compatibility between ether fuel of the present invention and this two kinds of other fuel and between these two kinds of other fuel.Therefore, even ether fuel of the present invention and this two kinds of other fuel are used simultaneously, also can be used as the fuel of the vehicles or power-equipment, for example the fuel of motor car engine.Comprise gasoline and No. 180 solvent oils for propellant combination of the present invention, only comprise gasoline with top independent argumentation or No. 180 solvent oil conditions are similar.But because the octane value of No. 180 solvent oils is lower, at this moment, the content of preferred No. 180 solvent oils should not surpass 20 weight % of propellant combination gross weight.

Method for the propellant combination of combination that obtains to comprise gasoline and No. 180 solvent oils and ether fuel of the present invention is not specifically limited.Can obtain propellant combination by ether fuel of the present invention is mixed with gasoline and No. 180 solvent oils.For example, ether fuel of the present invention and gasoline and No. 180 solvent oils all can be joined in the independent container, and mix, obtain propellant combination.Can use slow stirring to promote to mix.

To adopt specific embodiment to further describe the present invention below.Yet the present invention is not subjected to the restriction of these specific embodiments.

Embodiment

The raw material that adopts in following examples is as follows:

Dehydrated alcohol, content are greater than 99.7%, from the Beijing Chemical Plant

Dme, content are 99.5%, from Ji, Hebei spring dme Development Co., Ltd

2,6 ditertiary butyl p cresol is available from chemical reagent company limited of traditional Chinese medicines group

The trimethyl carbinol, content are greater than 99%, available from chemical reagent company limited of traditional Chinese medicines group

Succimide, label for labelling content 98.8-100.5% is available from chemical reagent company limited of traditional Chinese medicines group.

Ether fuel embodiment 1

In conventional absorption tower, according to the counter-current absorption method, absorption of dimethyl ether in ethanol, is obtained the ethanolic soln that dme concentration is 5 weight %, thereby obtain ether fuel 1.

Ether fuel embodiment 2

Embodiment 1 is identical with ether fuel, in above-mentioned absorption tower, according to the counter-current absorption method, absorption of dimethyl ether in ethanol, is obtained the ethanolic soln that dme concentration is 9 weight %, thereby obtains ether fuel 2.

Ether fuel embodiment 3

Embodiment 1 is identical with ether fuel, in above-mentioned absorption tower, according to the counter-current absorption method, absorption of dimethyl ether in ethanol, is obtained the ethanolic soln that dme concentration is 12 weight %, thereby obtains ether fuel 3.

Ether fuel embodiment 4

Embodiment 1 is identical with ether fuel, in above-mentioned absorption tower, according to the counter-current absorption method, absorption of dimethyl ether in ethanol, is obtained the ethanolic soln that dme concentration is 15 weight %, thereby obtains ether fuel 4.

Ether fuel embodiment 5

1g 2,6 ditertiary butyl p cresol, 1g succimide and the 100g trimethyl carbinol are joined in the ether fuel 1 that 10kg makes as mentioned above, and gentle agitation obtains ether fuel 5.

Ether fuel embodiment 6

In transparent vessel, the 2,6 ditertiary butyl p cresol of 0.5g is joined 10kg as above in the ether fuel 1 of gained, gentle agitation obtains ether fuel 6.

Ether fuel embodiment 7

In transparent vessel, the 2,6 ditertiary butyl p cresol of 0.8g is joined 10kg as above in the ether fuel 2 of gained, gentle agitation obtains ether fuel 7.

Ether fuel embodiment 8

In transparent vessel, the 2,6 ditertiary butyl p cresol of 0.9g is joined 10kg as above in the ether fuel 3 of gained, gentle agitation obtains ether fuel 8.

Ether fuel embodiment 9

In transparent vessel, the 2,6 ditertiary butyl p cresol of 2g is joined 10kg as above in the ether fuel 4 of gained, gentle agitation obtains ether fuel 9.

Ether fuel embodiment 10

In transparent vessel, the 2,6 ditertiary butyl p cresol of 50g is joined 10kg as above in the ether fuel 4 of gained, gentle agitation obtains ether fuel 10.

Ether fuel embodiment 11

In transparent vessel, the trimethyl carbinol of the 2,6 ditertiary butyl p cresol of 1g, 100g is joined 10kg as above in the ether fuel 3 of gained, gentle agitation obtains ether fuel 11.

Ether fuel embodiment 12

In transparent vessel, the succimide of the 2,6 ditertiary butyl p cresol of 1g, 1g is joined 10kg as above in the ether fuel 3 of gained, gentle agitation obtains ether fuel 12.

Propellant combination embodiment 1

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 1 of 200g and 1800g (production of Beijing company of China Petrochemical Industry) are mixed according to 10: 90 part by weight, obtain propellant combination 1.

Propellant combination embodiment 2

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 2 of 400g and 1600g (production of Beijing company of China Petrochemical Industry) are mixed according to 20: 80 part by weight, obtain propellant combination 2.

Propellant combination embodiment 3

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 3 of 600g and 1400g (production of Beijing company of China Petrochemical Industry) are mixed according to 30: 70 part by weight, obtain propellant combination 3.

Propellant combination embodiment 4

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 4 of 1000g and 1000g (production of Beijing company of China Petrochemical Industry) are mixed according to 50: 50 part by weight, obtain propellant combination 4.

Propellant combination embodiment 5

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 2 of 1400g and 600g (production of Beijing company of China Petrochemical Industry) are mixed according to 70: 30 part by weight, obtain propellant combination 5.

Propellant combination embodiment 6

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 1 of 1600g and 400g (production of Beijing company of China Petrochemical Industry) are mixed according to 80: 20 part by weight, obtain propellant combination 6.

Propellant combination embodiment 7

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 2 of 1800g and 200g (production of Beijing company of China Petrochemical Industry) are mixed according to 90: 10 part by weight, obtain propellant combination 7.

Propellant combination embodiment 8

In transparent vessel, above-mentioned ether fuel 1 of 400g and the part by weight of No. 90 ethanol petrols of 1600g (commercially available ethanol petrol, ethanol content are 10%) according to 20: 80 are mixed, obtain propellant combination 8.

Propellant combination embodiment 9

In transparent vessel, above-mentioned ether fuel 2 of 1100g and the part by weight of 900g90 methanol gasoline (commercial methanol gasoline, methanol content are 15%) according to 55: 45 are mixed, obtain propellant combination 9.

Propellant combination embodiment 10

In transparent vessel, No. 180 solvent oils of above-mentioned ether fuel 2 of 1600g and 400g (buying in chemical plant, the East Sea, Beijing) are mixed according to 80: 20 part by weight, obtain propellant combination 10.

Propellant combination embodiment 11

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 5 of 1600g and 400g (production of Beijing company of China Petrochemical Industry) are mixed according to 80: 20 part by weight, obtain propellant combination 11.

Propellant combination embodiment 12

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 1 of 1600g and 200g (production of Beijing company of China Petrochemical Industry) and No. 180 solvent oils of 200g (buying in chemical plant, the East Sea, Beijing) are mixed, obtain propellant combination 12.

Propellant combination embodiment 13

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 6 of 200g and 1800g (production of Beijing company of China Petrochemical Industry) are mixed according to 10: 90 part by weight, obtain propellant combination 13.

Propellant combination embodiment 14

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 7 of 400g and 1600g (production of Beijing company of China Petrochemical Industry) are mixed according to 20: 80 part by weight, obtain propellant combination 14.

Propellant combination embodiment 15

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 8 of 600g and 1400g (production of Beijing company of China Petrochemical Industry) are mixed according to 30: 70 part by weight, obtain propellant combination 15.

Propellant combination embodiment 16

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 9 of 1000g and 1000g (production of Beijing company of China Petrochemical Industry) are mixed according to 50: 50 part by weight, obtain propellant combination 16.

Propellant combination embodiment 17

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 10 of 1400g and 600g (production of Beijing company of China Petrochemical Industry) are mixed according to 70: 30 part by weight, obtain propellant combination 17.

Propellant combination embodiment 18

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 6 of 1600g and 400g (production of Beijing company of China Petrochemical Industry) are mixed according to 80: 20 part by weight, obtain propellant combination 18.

Propellant combination embodiment 19

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 7 of 1800g and 200g (production of Beijing company of China Petrochemical Industry) are mixed according to 90: 10 part by weight, obtain propellant combination 19.

Propellant combination embodiment 20

In transparent vessel, above-mentioned ether fuel 8 of 400g and the part by weight of No. 90 ethanol petrols of 1600g (commercially available ethanol petrol, ethanol content are 10%) according to 20: 80 are mixed, obtain propellant combination 20.

Propellant combination embodiment 21

In transparent vessel, above-mentioned ether fuel 9 of 1100g and the part by weight of 900g90 methanol gasoline (commercial methanol gasoline, methanol content are 15%) according to 55: 45 are mixed, obtain propellant combination 21

Propellant combination embodiment 22

In transparent vessel, No. 180 solvent oils of above-mentioned ether fuel 6 of 1600g and 400g (buying in chemical plant, the East Sea, Beijing) are mixed according to 80: 20 part by weight, obtain propellant combination 22.

Propellant combination embodiment 23

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 7 of 1600g and 200g (production of Beijing company of China Petrochemical Industry) and No. 180 solvent oils of 200g (buying in chemical plant, the East Sea, Beijing) are mixed, obtain propellant combination 23.

Propellant combination embodiment 24

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 11 of 600g and 1400g (production of Beijing company of China Petrochemical Industry) are mixed according to 30: 70 part by weight, obtain propellant combination 24.

Propellant combination embodiment 25

In transparent vessel, No. 90 motor spirit of above-mentioned ether fuel 12 of 600g and 1400g (production of Beijing company of China Petrochemical Industry) are mixed according to 30: 70 part by weight, obtain propellant combination 25.

The storage characteristics test

1. the above-mentioned ether fuel 1-12 that will prepare, the airtight separately preservation of propellant combination 1-25, in the envrionment temperature standing over night, visual observation is not found demixing phenomenon then.

2. above-mentioned ether fuel 1-12, the propellant combination 1-25 that will prepare respectively get 500g, and airtight then preservation is preserved 1 month after-vision in envrionment temperature and observed, and does not find demixing phenomenon.

Octane value is measured

According to GB/T 5487 testing octane number of gasoline methods (organon), ether fuel 1-12 and the blend gasoline fuel 1-25 that obtains above carried out the octane value measurement, measuring result is shown in Table 1.

Stability test

The above-mentioned ether fuel 1-12 and the propellant combination 1-25 that prepare were placed 1 month under envrionment conditions, measure gum level according to GB/T8019 then, and measure inductive phase according to GB/T8018, measuring result is shown in Table 1.

Table 1

The embodiment numbering

Component (wt%)

Octane value (RON)

Gum level

Inductive phase

	Dme	Ethanol		(mg/100mL)	(minute)
						Ether fuel 1	5	95	?＞100	1	1000
Ether fuel 2	9	91	?＞100	1	1000
						Ether fuel 3	12	88	?＞100	1	1200
Ether fuel 4	15	85	?＞100	1	1200
						Ether fuel 5 ^a	5	95	?＞100	1	1500

Table 1 (continuing)

The embodiment numbering	Component	Octane value (RON)	Gum level (mg/100mL)	Inductive phase (minute)
					Propellant combination 1	Ether fuel 1, No. 90 motor spirit of 200g, 1800g	93	3	1000
Propellant combination 2	Ether fuel 2,400g; No. 90 motor spirit, 1600g	95	3	1000
					Propellant combination 3	Ether fuel 3,600g; No. 90 motor spirit, 1400g	97	3	1000

Propellant combination 4	Ether fuel 4,1000g; No. 90 motor spirit, 1000g	＞100	2	1300
					Propellant combination 5	Ether fuel 2,1400g; No. 90 motor spirit, 600g	＞100	1	1300
Propellant combination 6	Ether fuel 1,1600g; No. 90 motor spirit, 400g	＞100	1	1500
					Propellant combination 7	Ether fuel 2,1800g; No. 90 motor spirit, 200g	＞100	1	1500
Propellant combination 8	Ether fuel 1,400g; No. 90 ethanol petrols, 1600g	95	3	1000
					Propellant combination 9	Ether fuel 2,1100g; No. 90 methanol gasolines, 900g	95	3	1000
Propellant combination 10	Ether fuel 2,1600g; No. 180 solvent oils, 400g	93	1	1000
					Propellant combination 11	Ether fuel 5,1600g; No. 90 motor spirit, 400g	97	3	1000
Propellant combination 12	Ether fuel 1,1600g; No. 90 motor spirit, No. 180 solvent oils of 200g, 200g	97	1	1000

Table 1 (continuing)

The embodiment numbering	Component	Octane value (RON)	Gum level (mg/100mL)	Inductive phase (minute)
					Propellant combination 13	Ether fuel 6, No. 90 motor spirit of 200g, 1800g	93	3	1000
Propellant combination 14	Ether fuel 7,400g; No. 90 motor spirit, 1600g	95	3	1000
					Propellant combination 15	Ether fuel 8,600g; No. 90 motor spirit, 1400g	97	2	1000
Propellant combination 16	Ether fuel 9,1000g; No. 90 motor spirit, 1000g	＞100	2	1500

Propellant combination 17	Ether fuel 10,1400g; No. 90 motor spirit, 600g	＞100	1	1500
					Propellant combination 18	Ether fuel 6,1600g; No. 90 motor spirit, 400g	＞100	1	1500
Propellant combination 19	Ether fuel 7,1800g; No. 90 motor spirit, 200g	＞100	1	1500
					Propellant combination 20	Ether fuel 8,400g; No. 90 ethanol petrols, 1600g	95	3	1000
Propellant combination 21	Ether fuel 9,1100g; No. 90 methanol gasolines, 900g	95	3	1300
					Propellant combination 22	Ether fuel 6,1600g; No. 180 solvent oils, 400g	93	1	1500
Propellant combination 23	Ether fuel 7,1600g; No. 90 motor spirit, No. 180 solvent oils of 200g, 200g	97	1	1400
					Propellant combination 24	Ether fuel 11,600g; No. 90 motor spirit, 1400g	97	2	1000
Propellant combination 25	Ether fuel 12,600g; No. 90 motor spirit, 1400g	97	2	1000

A: also contain 0.01% the 2,6 ditertiary butyl p cresol of having an appointment, about 0.01% succimide and about 1% the trimethyl carbinol in the ether fuel 5.

2 kilometers test run(s)s of vehicle

The fuel tank gasoline of Song Hua River automobile (Dongan 462 engines) is drained, above-mentioned ether fuel 1-12 and blend gasoline fuel 1-25 are respectively asked for 2 kilograms and put into fuel tank.Ignition trigger, the examination combustion was carried out 2 kilometers trial runs (road conditions are motorway, and average speed per hour is about 80 kilometers/hour) after 10 minutes.With above-mentioned operation result and the situation of employing No. 90 motor spirit (production of Beijing company of China Petrochemical Industry) when moving this automobile, compare according to following item compared 1-4.This item compared 1-3 adopts to have driver's subjective sensation of 10 year driving age to judge.Project 4 adopts all discharges remaining fuel from fuel tank, and weigh, thereby calculates oil consumption.

Item compared:

1. engine combustion situation

2. running state of the vehicle

3. whether vapor pipe discharges visible impurity (for example, black smoke etc.) (need the lengthening vapor pipe this moment, make the officer can see the tail gas from emission by exhaust pipe).

4. how oil consumption compares the result with regular gasoline

Above-mentioned comparative result is listed in the table 2.

In " engine combustion situation " one row of table 2, " ◎ " expression engine combustion situation and No. 90 motor spirit are quite or more excellent; " * " expression engine combustion situation is inferior to motor spirit No. 90.

In " running state of the vehicle " one row of table 2, " ◎ " expression running state of the vehicle and No. 90 motor spirit are quite or more excellent; " * " expression running state of the vehicle is inferior to motor spirit No. 90.

In " whether vapor pipe discharges visible impurity " row of table 2, visible impurity is not discharged in " ◎ " expression; The visible impurity of " * " expression discharging.

In " how oil consumption compares the result with gasoline " one row of table 2, " ◎ " expression oil consumption and No. 90 motor spirit are quite or more excellent; " * " expression oil consumption is inferior to motor spirit No. 90.

The test of vehicle long distance running

Ether fuel 1-10 above repeating and the test preparation of propellant combination 1-23, difference is that the consumption of each component all is increased to 20 times of former consumption, carry out 600 kilometers long distance test (DT)s for use in identical Song Hua River automobile, and be used for the A6 of Audi (A62.4 of Audi discharge capacity car, engine are V-type 6 cylinders/6 valve electric controlled multi-point jet engine fuels) and carry out the test of 800 kilometers long distance runnings.And, estimate Vehicular behavior according to top method.The highway section, expressway is adopted in the long distance running test, and average speed per hour is 100 kilometers/hour.Evaluation result is shown in Table 2.

The contriver finds when adopting ether fuel of the present invention and propellant combination to carry out above-mentioned test run(s), all obtained consistent identical good result for short range, long distance and different car category, therefore, all results of the test run(s) above the result in the following table 2 has represented.

Table 2

From the result of table 1 and table 2 as can be seen, ether fuel of the present invention and the propellant combination that contains ether fuel of the present invention can be used for various motor spirit engines, and oil consumption is identical with marketable gasolines or lower.The result of table 1 and table 2 has confirmed that also ether fuel of the present invention can use separately, also can mix use with various gasoline.The result of table 1 has confirmed that equally ether fuel octane number of the present invention is higher, and major part has all surpassed 100.And ether fuel of the present invention can be used for improving the octane value of regular gasoline or methyl alcohol or ethanol petrol, and improves the stability of regular gasoline or ethanol or methanol gasoline.Ether fuel of the present invention can improve the octane value of No. 180 solvent oils equally, and improves the stability of No. 180 solvent oils.Widen the vehicle fuel scope.

Detection of fuel

Above-mentioned ether fuel 1-12 and propellant combination 1-25 are carried out boiling range, copper corrosion and lead content detection.Wherein boiling range detects and carries out according to GB/T6536, and copper corrosion detects to be carried out according to GB/T5096, and lead content detects GB/T8020 to carry out.Detected result is shown in the following table 3.

Table 3

Table 3 (continuing)

Table 3 (continuing)

Table 3 (continuing)

Table 3 (continuing)

Table 3 (continuing)

From the result of table 3 as can be seen, ether fuel of the present invention and the every index of propellant combination that contains ether fuel of the present invention all obtain good result.

Emission detections

According to GB 18285-2005, use the SQR7080 of Cherry motor car engine model to be SQR372FD, above-mentioned ether fuel 1-12 and propellant combination 1-25 are carried out the exhaust emissions measurement, result shown in the table is three mean values of measuring.

Measuring result is shown in the following table 4.

Table 4

Table 4 (continuing)

Table 4 (continuing)

Table 4 (continuing)

Table 4 (continuing)

Table 4 (continuing)

Table 4 (continuing)

As can be seen from Table 4, use ether fuel of the present invention and propellant combination, tail gas discharging pollutant is starkly lower than the national standard of China.

Ether fuel of the present invention has the octane value height, increases dynamic property, and energy consumption is low, the cleanliness height, and versatility is good, long quality-guarantee period, advantages such as wide material sources.Because the octane value height, ether fuel of the present invention is applicable to high compression engine more, thereby increases dynamic property.Generally speaking, ether fuel of the present invention is because the octane value height, and can add raising calorific value component in preparation, under the situation of vehicle being done accommodation (reduce air inlet, adjust ignition advance angle), specific consumption reduces by 5%, with the miscible burning of mixing of gasoline, specific consumption reduces more than 10%.Ether fuel of the present invention is high oxygenated fuel, because burning fully, can make automotive pollutant emission CO, CO2+HC reduce 50%-80%, carcinogens benzene and sulphur emissions coefficient are 0.Simultaneously can effectively remove vehicle fuel feeding, firing system carbon distribution, prolong the work-ing life of engine.The versatility of ether fuel of the present invention is good, not changing under engine structure and the parameter situation, can directly use; And the contriver finds turning air door down, adjusts under the situation of ignition advance angle, can further improve the power of engine, and steady running.Carry out any ratio with gasoline and mix burning.Be more than a times of GB gasoline the inductive phase of ether fuel of the present invention.Can steady in a long-termly preserve, can make storage, transportation, sell and use the link required time to prolong.

Claims

1. an ether fuel comprises dme, ethanol and 2,6 ditertiary butyl p cresol.

2. the ether fuel of claim 1, wherein the content of dme is the 4-15 weight part, and alcoholic acid content is the 85-96 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

3. the ether fuel of claim 1, wherein the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

4. the ether fuel of claim 1, wherein the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

5. each ether fuel of claim 1-4, wherein said ether fuel is made up of dme, ethanol and 2,6 ditertiary butyl p cresol.

7. the ether fuel of claim 6, wherein the content of dme is the 4-15 weight part, and alcoholic acid content is the 85-96 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.005-0.5 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

8. the ether fuel of claim 6, wherein the content of dme is the 8-15 weight part, and alcoholic acid content is the 85-92 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.008-0.02 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

9. the ether fuel of claim 6, wherein the content of dme is the 10-15 weight part, and alcoholic acid content is the 85-90 weight part, and the content of 2,6 ditertiary butyl p cresol is the 0.009-0.012 weight part, and wherein dme and alcoholic acid gross weight are 100 weight parts.

10. each ether fuel among the claim 6-9, wherein said additive is the trimethyl carbinol, succimide, perhaps the combination of the trimethyl carbinol and succimide.