• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    ABSTRACT The invention relates to a method for preparing an ethanol fuel composition,comprising the following steps: a) providing a first amount of ethanol to a vessel b) addition of an amount of ethoxylated oleyl amine and an amount of ignitionimprover to the ethanol provided in step a) such that a first mixture is obtainedwherein: the concentration of ethanol in the first mixture is 35-55 % (w/w); the ratio (w/w) of ethoxylated oleyl amine to ethanol in the first mixture is inthe range 1:4 - 1:15, preferably in the range 1:6 - 1:10, and the ratio (w/w) of ignition improver to ethanol in the first mixture is in therange 1:1 - 1:3, preferably in the range 1:1.2 - 1:2 c) blending the first mixture by using vertical circulation and/or stirring suchthat a blended first mixture is obtained; d) combining the blended first mixture obtained in step c) with a secondamount of ethanol such that a second mixture is obtained; e) blending of the second mixture obtained in step d) to obtain the ethanolfuel wherein the ethanol fuel obtained in step e) comprises: 80-90 % (w/w), preferably 84-88 % (w/w) ethanol 0.1-2 % (w/w), preferably 0.5-1.5 % (w/w) ethoxylated oleyl amine 3-10 % (w/w), preferably 4-6 % (w/w) ignitionimprover and wherein the ignition improver added in step b) is a water soluble adduct ofpolyol having 3-10 hydroxyl groups and ethylene oxide and/or propyleneoxide and wherein the molecular weight of the aduct is 350 to 2000 Da,preferably 600-1000 Da;
    公开号:SE1351329A1
    申请号:SE1351329
    申请日:2013-11-12
    公开日:2015-05-13
    发明作者:Roger Mattebo；Martin Karlsson；Gunder Häggström
    申请人:Sekab Biofuels & Chemicals Ab；
    IPC主号:
    专利说明:

    METHOD FOR PREPARING AN ETHANOL FUEL COMPOSITIONTechnical fieldThe present invention relates to the field of preparation of ethanol fuelcompositions. ln particular the invention relates to methods which reduces oravoids precipitation of components of the ethanol fuel compositions during thepreparation.
    BackgroundGlobal warming, petroleum depletion and energy security have been the maindriving forces for the development of renewable fuels that can replace thepetroleum-derived fuels, such as gasoline and diesel. Ethanol is currently themost commonly used renewable automobile fuel. lt is largely produced byfermentation of sugar- or starch-containing feedstocks, such as cane sugar,corn and wheat. Also, it may be produced from lignocellulose, which is a lessexpensive raw material. Other benefits of lignocellulose are that it is notconsidered a human food resource and that ethanol may be produced from itwith a relatively high net energy gain and a high renewable COg-efficiency,i.e. the amount of fossil C02 generated throughout the production chain whenproducing ethanol from lignocellulose is comparatively low.
    The use of ethanol in traditional gasoline or diesel engines is associated witha number of problems. To overcome these problems, various ethanol fuelcompositions that are adapted for such use have been developed over thepast years. Many of these fuel compositions comprise various additives, andit may be problematic to achieve a sufficient mixing of the ethanol and suchadditives, especially in large scale production of the fuel compositions.
    Summary of the present disclosureED95 is an ethanol based fuel comprising an ignition improver consisting ofan adduct of a polyol having 3-10 hydroxyl groups and ethylene oxide and/or2propylene oxide; a surface active agent consisting of ethoxylated oleyl amine,a corrosion inhibitor, denaturants and a colorant. Even though the saidignition improver and the said surface active agent are soluble in ethanol,efficient preparation of the fuel has been cha|enging due to precipitation ofthe ignition improver and the surface active agent. lt is an object of thepresent invention to provide a method for the preparation of an ethano| fuelcomposition, comprising such ignition improver and such surface activeagent, which reduces or even eliminates the precipitation of the ignitionimprover and the surface active agent.
    The present inventors have developed a method of preparing such ethano|fuels which surprisingly overcomes the problem described above by reducingor even eliminating precipitation of the ignition improver and the surfaceactive agent in the preparation of the fuel.
    Therefore a first aspect of the present invention relates to a method forpreparing an ethano| fuel composition, comprising the following steps:a) providing a first amount of ethano| to a vesselb) addition of an amount of ethoxylated oleyl amine and an amount of ignitionimprover to the ethano| provided in step a) such that a first mixture is obtainedwherein:the concentration of ethano| in the first mixture is 35-55 % (w/w);the ratio (w/w) of ethoxylated oleyl amine to ethano| in the first mixture is inthe range 1:4 - 1:15, preferably in the range 1:6 - 1:10 , andthe ratio (w/w) of ignition improver to ethano| in the first mixture is in therange 1:1 - 1:3, preferably in the range 1:1.2 - 1:2c) blending the first mixture by using vertical circulation and/or stirring suchthat a blended first mixture is obtained;d) combining the blended first mixture obtained in step c) with a secondamount of ethano| such that a second mixture is obtained;e) blending of the second mixture obtained in step d) to obtain the ethano|fuelwherein the ethano| fuel obtained in step e) comprises:380-90 % (w/w), preferably 84-88 % (w/w) ethanol0.1-2 % (w/w), preferably 0.5-1.5 % (w/w) ethoxylated oleyl amine3-10 % (w/w), preferably 4-6 % (w/w) ignitionimproverandwherein the ignition improver added in step b) is a water soluble adduct ofpolyol having 3-10 hydroxyl groups and ethylene oxide and/or propyleneoxide and wherein the molecular weight of the aduct is 350 to 2000 Da ,preferably 600-1000 Da;Detailed descriptionEthanol based fuels comprising 80-90 % (w/w) ethanol, a surface activeagent, consisting of ethoxylated oleyl amine, and of an ignition improver,consisting of an adduct of a polyol having 3-10 hydroxyl groups and ethyleneoxide and/or propylene oxide, are presently used as fuel for busses andlorries. A drawback with these kinds of fuels is that it is hard to mix the fuel inan efficient way since the ignition improver and the surface active agent easilyprecipitates. This is problematic since the precipitates are hard to dissolveand non-dissolved precipitates will affect the concentration of ignitionimprover and surface active agent in the final fuel. The present inventors haverealized that there is a need for improved methods of blending ethanol basedfuels comprising such surface active agent and such ignition improvers.
    The present inventors have found that it is possible to vastly reduce or evenprevent the precipitation of ignition improver and surface active agent bymaking an initial premix of ethanol, ignition improver and surface active agentin a premixing step. The present inventors have further found that theconcentration of ethanol, the ratio of ethanol to ignition improver and the ratioof ethanol to surface active agent, in the premixing step, are critical for thelevel of precipitation. ln particularly, if the ethanol concentration in thepremixing step is 35-55 % (w/w); the present inventors have discovered thatprecipitation of the ignition improver is surprisingly low if the ratio of ethanol toignition improver is in the range 1:1 - 1:3. Even better results are achieved ifthe ratio of ethanol to ignition improver is in the range 1:1.2 - 1:2. The present4inventors have further discovered that the precipitation of the surface activeagent can be vastly reduced if the ratio of ethanol to surface active agent is inthe range 1:4 - 1:15. Even better results are achieved if the ratio of ethanolto surface active agent is in the range 1:6 - 1:10. The present inventors havefurther discovered that the ignition improver and the surface active agentpreferably should be added to the ethanol and not the other way around. lfthe ethanol is added to a vesse| comprising the ignition improver and/or thesurface active agent, the present inventors have discovered that the levels ofprecipitated ignition improver and/or the surface active agent will be higher.The present inventors have discovered that vertical circulation and/or stirringof such a premix is a suitable way of blending the premix. One advantagewith vertical circulation is that less costly equipment can be used compared toif for example a stirred tank reactor is used for the blending of the premix.After the premix is prepared, the final fuel can be prepared from the premix byaddition of ethanol up to the desired concentration, i.e 80-90 % (w/w),followed by blending of the obtained mixture by stirring, preferably in a stirredtank reactor. ln the context of the present disclosure, ”blending” refers tomixing at least two constituents such that these become less separated fromeachother. ln the present disclosure the term ”vertical circulation” shall beinterpreted as that liquid in a container is pumped from a first position in thecontainer to a second position in the container which is located higher thanthe first. Typically in vertical circulation, liquid is pumped from the bottom ofthe container to a position near the liquid surfaceThe present invention is at least partly based on the discoveries, insights andfindings which are described above, and thus a first aspect of the inventionrelates to a method for preparing an ethanol fuel composition, comprising thefollowing steps:a) providing a first amount of ethanol to a vesse|b) addition of an amount of ethoxylated oleyl amine and an amount of ignitionimprover to the ethanol provided in step a) such that a first mixture is obtainedwherein:the concentration of ethanol in the first mixture is 35-55 % (w/w);5the ratio (w/w) of ethoxylated oleyl amine to ethanol in the first mixture is inthe range 1:4 - 1:15, preferably in the range 1:6 - 1:10 , andthe ratio (w/w) of ignition improver to ethanol in the first mixture is in therange 1:1 - 1:3, preferably in the range 1:1.2 - 1:2c) blending the first mixture by using vertical circulation and/or stirring suchthat a blended first mixture is obtained;d) combining the blended first mixture obtained in step c) with a secondamount of ethanol such that a second mixture is obtained;e) blending of the second mixture obtained in step d) to obtain the ethanolfuelwherein the ethanol fuel obtained in step e) comprises:80-90 % (w/w), preferably 84-88 % (w/w) ethanol0.1-2 % (w/w), preferably 0.5-1.5 % (w/w) ethoxylated oleyl amine3-10 % (w/w), preferably 4-6 % (w/w) ignitionimproverandwherein the ignition improver added in step b) is a water soluble adduct ofpolyol having 3-10 hydroxyl groups and ethylene oxide and/or propyleneoxide and wherein the molecular weight of the aduct is 350 to 2000 Da ,preferably 600-1000 DaSince the the self ignition temperature of ethanol is relatively high, atraditional diesel engine does not run well on pure ethanol. Therefore, anignition improver is added. ln the context of the present disclosure, an“ignition improver” refers to an agent which improves the ignition properties ofa fuel into which it has been blended. Examples of suitable ignition improversfor the fuels prepared according to the present invention have been describedpreviously, see WO9505437, and are also commercially available and soldunder the trade name Beraid (Akzo Nobel). Suitable ethoxylated oleyl amineincludes tertiary amine ethoxylate, based on a primary oleyl amine. Apreferred ethoxylated oleyl amine is bis-(2-hydroxyethyl)-oleyl amine. Oneexample of a suitable ethoxylated oleyl amine is Ethomeen O/12 (AkzoNobel).6To prevent precipitation of the ignition improver it is important that thetemperature of the ignition improver is not to low. Therefore, in oneembodiment the temperature of the ignition improver added in step b) is atleast 15 °C such as at least 20 °C _Usually denaturing agents are added to ethanol fuel compositions, to preventconsumption of the fuel composition. Such denaturing agents shouldpreferably have one or more, preferably all, of the following properties:unpleasant smell; disagreeable taste; solubility in ethanol; and compatibilitywith the ignition improver. Further it is beneficial if the denaturing agent(s)is/are not harmful to fuel systems and engines and is/are not easily separatedfrom the fuel composition by distillation or other methods. Examples ofsuitable denaturating agents includes butanol and C1-3 alkyl-tert-butyleter,such as metyl-tert-butyleter (MTBE) and etyl-tert-butyleter (ETBE). Forexample the commercially available fuel ED95 comprises Iso-butanol andMTBE. The present inventors have discovered that the denaturing agents (atleast in the case of iso-butanol, MTBE and ETBE) can be added at any of thesteps a)-e). However, the present inventors have discovered that the blendingis more efficient if the denaturating components are added to the ethanolprovided in step a) together with the ethoxylated oleyl amine and the ignitionimprover.
    Thus in one embodiment the method further comprises a step of addingbutanol prior to and/or during any of the steps a)-e) such that the ethanol fuelobtained in step e) comprises 0.2-1.5 % (w/w) butanol. ln one embodiment atleast part of the butanol is added during step b) to the ethanol provided instep a). ln one embodiment the butanol is n-butanol and/or iso-butanol. ln apreferred embodiment the butanol is iso-butanol. ln one embodiment themethod further comprises a step of adding MTBE and/or ETBE prior to and/orduring any of the steps a)-e) such that the ethanol fuel obtained in step e)comprises 1-3 % (w/w) MTBE and/or ETBE. ln one embodiment at least partof the MTBE and/or ETBE is added during step b) to the ethanol provided instep a). ln one embodiment the ethanol fuel composition is ED95. ln one7embodiment the method further comprises addition of a colourant prior toand/or during any of the steps a)-e).
    Engines, such as diesel engines, running on ethanol fuel are particularlysusceptible to corrosion. Therefore, a corrosion inhibitor may be added to thefuel composition. The inventors have found that morpholin is a particularlysuitable corrosion inhibitor for this purpose. Consequently, in oneembodiment of the invention, the corrosion inhibitor may be morpholin orderivatives thereof. Furthermore, in one embodiments of the invention, thecorrosion inhibitor is added in an amount corresponding to 5-500 ppm,preferably 30-300 ppm, more preferably 50-150 ppm of the total weight of theethanol fuel composition, i.e. the ethanol fuel composition obtained in step e).The ranges are particularly relevant if the corrosion inhibitor is morpholin.ln embodiments of the invention, the corrosion inhibitor is added together withthe ignition improver in step b). For example, the corrosion inhibitor may bepre-mixed with the ignition improver added in step b).
    As described above the blending of the first mixture in step c) is performed atleast partly by using vertical circulation and/or stirring. ln step e) verticalcirculation is less suitable since the volume in step e) is much larger than instep c). Vertical circulation is less practical and demands more energy andexpensive equipment when the volumes are larger.
    Therefore, in one embodiment the blending in step e) is at least partlymediated by stirring of the second mixture obtained in step d). ln oneembodiment the total weight of the first mixture obtained in step b) is between100 and 1000 tons preferably 200-600 tons such as 300-500 tons. ln oneembodiment the total weight of the second mixture obtained in step d) isbetween 540 and 5400 tons preferably 1100-3200 tons such as 1600-2700tons.
    Step d) can preferably be performed by transferring the blended first mixtureobtained in step c) to a second vessel comprising the second amount of8ethanol. The present inventors have realized that this is benificial for theblending in step e). Thus, in one embodiment the blending of the first mixturein step c) is performed in a first vesse| comprising means for verticalcirculation and step d) comprises transferring the blended first mixtureobtained in step c) to a second vessel. ln one embodiment the second vesse|is comprising the second amount of ethanol and the blending of the secondmixture in step e) is performed in the second vessel. ln one embodiment thesecond vesse| is a stirred tank reactor.
    The present inventors have realized that a lot of benefits can be achieved ifthe second vesse| is a tank on a motor vehicle designed to carry IiquefiedIoads. Such motor vehicles are well known to the skilled person and arecommonly referred to as tank trucks, tanker trucks or petrol tankers. Oneadvantage with this solution is that the second mixture is, at least to somextent, blended by the movement of the second mixture within the tank,mediated by the movement generated when the motor vehicle is driving.Another advantage is that it eliminates the needs for a large stirred tankreactor for the blending of the second mixture. A third advantage is that thefuel can be produced on demand from a premixed solution, directly in avehicle for transportation of the fuel. The present inventors have realized thatthis is particularly suitable if the first mixture and the second amount ofethanol are mixed inline prior to introduction of the obtained second mixture inthe tank. For example, blended first mixture can be withdrawn from the firstvesse| via a first pipe and the second amount of ethanol can be withdrawnfrom a container containing ethanol via a second pipe. Both the first pipe andthe second pipe can lead to a third pipe such that the first blended mixture ismixed with the second amount of ethanol in the said third pipe to obtain thesecond mixture within the third pipe. The third pipe can lead to the tank on themotor vehicle, such that the second mixture is transferred to the said tank viathe third pipe. The inline mixing can be mediated by an inline mixing devicewhich can be present in the third pipe. Such inline mixing devices are wellknown to the skilled person. For example the inline mixing device can be astatic mixer. Such static mixers can comprise geometric mixing elements9fixed within a pipe, and which use the energy of a flow stream to createmixing between two or more fluids. For example, a static mixer can bearranged in the third pipe to facilitate blending of the first mixture obtained instep c) with the second amount of ethano| prior to introduction of the secondmixture in the tank on the motor vehicle designed to carry Iiquefied loads.
    Thus, in one embodiment the second vessel is a tank on a motor vehicledesigned to carry Iiquefied loads. ln one embodiment, the blending of thesecond mixture in step e) is at least partly achieved by the motion createdwhen the motor vehicle is driving. ln a preferred embodiment the blended firstmixture obtained in step c) is inline mixed with the second amount of ethano|such that the second mixture is formed inline prior to introduction of thesecond mixture in the tank on the motor vehicle designed to carry Iiquefiedloads. ln one embodiment, the inline mixing is at least partly mediated by aninline mixing device. ln one embodiment the inline mixing device is a staticmixerAlternatively, the second amount of ethano| can be added to the blended firstmixture obtained in step c). An advantage with this is that only one vessel isneeded for the preparation of the fuel but a draw back is that the blending instep e) is less effective. Thus, in an alternative embodiment the blending ofthe first mixture in step c) is performed in a first vessel, preferably comprisingmeans for vertical circulation, and step d) comprises adding the secondamount of ethano| to the first vessel and the blending of the second mixture instep e) is performed in the first vessel. ln one embodiment the first vessel is astirred tank reactor, preferably comprising means for vertical circulation.
    The inventors have realized that blending in step e) preferably shall beperformed until the density difference between the liquid by the liquid surfaceand the liquid by the bottom of the vessel is 2 % or less, such as 1 % or less.Preferably, the density difference is 0.5 % or less, more preferably 0.2 % orless. Under given circumstances, the person skilled in the art understandswhat “by the liquid surface” and “by the bottom of the vessel” refer to.
    Typically, “by the bottom” is within 0.5 m of the bottom, and “by the liquidsurface” is within 0.5 m of the surface. However, this depends on the size ofthe vessel. Further, equipment for density measurements is well known andcommercially available, and the person skilled in the art understands how toperform the density measurements.
    Also in the blending in step c) it is important that the density differencebetween the liquid by the liquid surface and the liquid by the bottom of thevessel is low. Thus in one embodiment the density difference between theliquid by the liquid surface and the liquid by the bottom of a vessel of the firstmixture obtained in step c) is 5 % or less, such as 2 % or less, such as 1 % orless. Preferably, the density difference is 0.5 % or less, more preferably 0.2 %or less. Such a low density difference may preferably be achieved by meansof vertical circulation of the total volume of the first mixture obtained in step b)at least 1 time, such as at least 1.15 times, such as at least 1.5 times, such asat least 2 times. The number of times the total volume is circulated iscalculated as the capacity of the pump by means of which the circulation isperformed multiplied by the duration of the pumping divided by the totalvolume. For example, if the total volume is 500 m3, the capacity of the pumpis 60 m3/h and pumping is performed during 10 h, the total volume iscirculated 60*10/500 = 1.2 times.
    Detailed description of an example embodiment200 tonnes ethanol liquid comprising about 93 % ethanol (w/w) and 7 % water(w/w) is pumped to a tank comprising means for vertical circulation.Thereafter 120 tonnes of ignition improver, (Beraid from Akzo Nobel), 10. 3tonnes of lsobutanol, 51. 4 tonnes of MTBE, 24 tonnes of ethoxylated oleylamine (Ethomeen from Akzo Nobel) and 4.8 kg of the red colorantBasonylbasic Red (BASF) is pumped to the tank during vertical circulation ofthe liquid in the tank. This circulation is performed at a rate of 60 m3/h. Afterall the components have been added, the liquid in the tank is verticallycirculated for 10 h at a rate of 60 m3/h to obtain a first mixture. Thereafter the11first mixture is pumped into a stirred tank reactor comprising 800 tonnes ofethanol ( 93% w/w) during stirring of the stirred tank reactor. Thereafter 1190tonnes of ethanol (93 % w/w) is added during stirring, followed by stirring ofthe solution for about 1-5 days to obtain the ethanol fuel.
    权利要求:
    Claims (15)
    [1] 1) Method for preparing an ethanol fuel composition, comprising the followingsteps: a) providing a first amount of ethanol to a vessel b) addition of an amount of ethoxylated oleyl amine and an amount of ignitionimprover to the ethanol provided in step a) such that a first mixture is obtainedwherein: the concentration of ethanol in the first mixture is 35-55 % (w/w); the ratio (w/w) of ethoxylated oleyl amine to ethanol in the first mixture is inthe range 1:4 - 1:15, preferably in the range 1:6 - 1:10, and the ratio (w/w) of ignition improver to ethanol in the first mixture is in therange 1:1 - 1:3, preferably in the range 1:1.
    [2] 2 - 1:2 c) blending the first mixture by using vertical circulation and/or stirring suchthat a blended first mixture is obtained; d) combining the blended first mixture obtained in step c) with a secondamount of ethanol such that a second mixture is obtained; e) blending of the second mixture obtained in step d) to obtain the ethanolfuel wherein the ethanol fuel obtained in step e) comprises: 80-90 % (w/w), preferably 84-88 % (w/w) ethanol 0.1-2 % (w/w), preferably 0.5-1.5 % (w/w) ethoxylated oleyl amine
    [3] 3-10 % (w/w), preferably
    [4] 4-6 % (w/w) ignitionimprover and wherein the ignition improver added in step b) is a water soluble adduct ofpolyol having 3-10 hydroxyl groups and ethylene oxide and/or propyleneoxide and wherein the molecular weight of the aduct is 350 to 2000 Da,preferably 600-1000 Da; 2) Method according to claim 1 wherein the ethoxylated oleyl amine is bis-(2- hydroxyethyl)-oleyl amine 133) Method according to any of the previous claims wherein the method further comprises a step of adding butanol prior to and/or during any of the steps a)-e) such that the ethano| fuel obtained in step e) comprises 0.2-1.5 % (w/w) butanol 4) Method according to claim 3 wherein at least part of the butanol is added during step b) to the ethano| provided in step a)
    [5] 5) Method according to any of the previous claims wherein the method furthercomprises a step of adding MTBE and/or ETBE prior to and/or during any ofthe steps a)-e) such that the ethano| fuel obtained in step e) comprises 1-3 %(w/w) MTBE and/or ETBE
    [6] 6) Method according to claim 5 wherein at least part of the MTBE and/orETBE is added during step b) to the ethano| provided in step a)
    [7] 7) Method according to any of the previous claims wherein the b|ending instep e) at least partly is mediated by stirring of the second mixture obtained instep d)
    [8] 8) Method according to any of the previous claims wherein the total weight ofthe first mixture obtained in step b) is between 100 and 1000 tons preferably200-600 tons such as 300-500 tons
    [9] 9) Method according to any of the previous claims wherein the total weight ofthe second mixture obtained in step d) is between 540 and 5400 tonspreferably 1100-3200 tons such as 1600-2700 tons
    [10] 10) Method according to any of the previous claims wherein the temperatureof the ignition improver added in step b) is at least 15 °C such as at least 20°C 1411) Method according to any of the previous ciaims wherein the blending of the first mixture in step c) is performed in a first vesse| and wherein step d)comprises transferring the blended first mixture obtained in step c) to a second vesse| 12) Method according to ciaim 11 wherein the second vesse| is comprisingthe second amount of ethanoi and wherein the blending of the second mixture in step e) is performed in the second vesse| 13) Method according to ciaim 12 wherein the second vesse| is a stirred tank reactor 14) Method according to ciaim 11 wherein the second vesse| is a tank on a motor vehicle designed to carry Iiquefied Ioads 15) Method according to ciaim 14 wherein the blended first mixture obtainedin step c) is in|ine mixed with the second amount of ethanoi such that thesecond mixture is formed in|ine prior to introduction of the second mixture in the tank on the motor vehicle designed to carry Iiquefied Ioads
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    同族专利:
    公开号 | 公开日
    EP3068524A1|2016-09-21|
    EP3068524A4|2017-06-28|
    WO2015072911A1|2015-05-21|
    SE538634C2|2016-10-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    SE510104C2|1993-08-19|1999-04-19|Berol Nobel Ab|Ethanol fuel and use of an ignition enhancer|
    SE523228C2|2000-12-15|2004-04-06|Akzo Nobel Nv|Fuel composition containing a hydrocarbon fraction, ethanol and an additive with water solubilizing capacity|
    EP2128232A1|2008-05-20|2009-12-02|Castrol Limited|Lubricating composition for ethanol fueled engines|
    EP2204433A1|2008-12-30|2010-07-07|SEKAB BioFuels & Chemicals AB|Ethanol-based fuel for compression engines|
    SE535227C2|2010-10-06|2012-05-29|Scania Cv Ab|Use of rapeseed methyl ester as a precipitant inhibiting fuel additive in ethanol-based fuels|CN105080379A|2015-08-04|2015-11-25|周荣国|Device for blending fuel oil for ship and processing technology thereof|
    RU2723546C1|2019-10-08|2020-06-16|Дмитрий Владимирович Цыганков|Alternative automotive fuel and method of its production|
    法律状态:
    2018-06-26| WITD| Patent withdrawn according to par. 54 patents act|
    2019-07-02| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1351329A|SE538634C2|2013-11-12|2013-11-12|Method for preparing an ethanol fuel composition|SE1351329A| SE538634C2|2013-11-12|2013-11-12|Method for preparing an ethanol fuel composition|
    EP14862717.7A| EP3068524A4|2013-11-12|2014-11-06|Method for preparing an ethanol fuel composition|
    PCT/SE2014/051317| WO2015072911A1|2013-11-12|2014-11-06|Method for preparing an ethanol fuel composition|
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