BR102012020912A2 - FUEL ALCOHOL-ETHANOL FUEL PRODUCTION PROCESS FOR DIESEL ENGINES - Google Patents

Abstract

DEPRODUCTION PROCESS OF COMBSUTIVEL WITH FERMENTED ALCOHOL-ETHANOL CONTENT, FOR DIESEL ENGINES, which addresses the process of producing diesel fuel with fermented alcohol content. This process requires the acquisition of fermented alcohol to create diesel fuel, with diesel, fermented alcohol, additive or multifunctional additive. the alcohol fermented in the fuel must be in a concentration of 0.3% to 4% of the volume or up to 15% of the volume of water for fermented alcohol. Water in the fuel is solubilized. the event makes it possible to prepare fuel, the number of cetane, lubricide and corrosion resistance of the combustion system is reduced. the invention offers diesel engine fuels with a content of oxygenated components, which in the engine's combustion cycle cause a decrease in the harmful elements in the emission of gases. Reduction of nitrogen oxide (NOx), sulfur oxide (Sox) and smoke reduction are achieved. Fuels processed by the invention make it possible to replace in traditional fuels parts given components of crude oil by non-mineral components, produced from renewable sources or secondary materials.

Description

Descriptive Report of the Invention Patent of "ETHANOL-FERMENTED ALCOHOL FUEL PRODUCTION PROCESS FOR DIESEL ENGINES"

This patent specification describes the invention for the production process of fuel for ethanol-fermented diesel engines, the development of which is intended to enable the production of fuel for fermented-alcohol diesel engines.

The technology area:

The present invention relates to the process of producing fermented alcohol diesel fuel. Fuels produced using this invention belong to the biofuels segment. They are suitable for reducing pollutants emitted by engines. As fermented alcohol does not contain sulfur, its addition can proportionally reduce the sulfur content in the fuel, thereby reducing the emission of sulfur oxide (SOx) and other harmful elements such as nitrogen oxide (NOx), carbon monoxide ( CO) and the smoke.

In adapted engines for buses there is the possibility, with the use of this invention, to produce fuel with fermented alcohol content up to 95% of volume, which in transport, especially in urban environment, considerably reduces the emission of harmful substances released through the exhaust. of vehicles.

Current state of technology:

Efforts are currently being made to replace crude oil fuel components with non-petroleum components 25 such as fatty acid methylester, which in many countries is permitted by law to add it in varying amounts to diesel as a bio-component. Another important commodity among biofuels is ethanol achieved by the fermentation process of sugar or starch materials. The fermented alcohol for fuels must have an ethanol concentration of 99.2% to 99.7% of the volume. Such a high concentration of ethanol is possible using technological dehydration processes. The presence of a certain amount of water in the fermented alcohol when it is added as a component to the fuel can cause the risk of stratification of the final fuel. Until now, as an oxygen component fermented alcohol has been used mainly in gasoline engine fuels.

Similarly fermented alcohol can be used as a component or fuel in diesel engines as well.

05 With fermented alcohol there is a possibility to replace part of

naphtha in diesel engines - usually up to 20% of volume and in engines adjusted to 95% of volume. In these cases, however, the adverse characteristics of fermented alcohol (low cetane content, low lubricity, low corrosion resistance) need to be reversed with the use of additives.

The low caloric value of alcohol fermented in fuel

causes fuel dose correction. Deficiencies caused by the addition of fermented alcohol to naphtha are solved with new additives in accordance with this patent.

The nature of the invention;

The current disadvantages of biofuel production are eliminated in the production of fermented alcohol diesel fuel and depend on consecutive steps.

These include getting alcohol and producing diesel fuel that contains naphtha, fermented alcohol and additive, multifunctional additive, or multifunctional additives or a mixture thereof.

The fermented alcohol for these fuels has the content of

0.3% water, 4% to 15% of volume. The next important step in the process of producing this fuel is the solubilization of water in fermented alcohol.

Solubilization is accomplished by adding the solubilizer or multifunctional ingredient or multifunctional ingredients or a mixture thereof. Solubilization creates a stable single phase system, which avoids the separation of fuel phases.

The fuel in which the water-fermented alcohol portion is solubilized creates a colloidal microemulsion system, where the dispersed phase has particle sizes of 100 ° A and up to 2000 ° A. The amount of alcohol fermented with 30 solubilized water in the fuel is up to 5% - 30% or up to 95% by volume. This product may contain additives to enhance its useful properties. They are additives that improve the cetane content of the fuel, or act by preventing corrosion of the engine's combustion system by improving the lubricity of ethanol in the fuel, and further lower the smoke level. Advantage of the production method according to this patent is the possibility of using also the hydrophilic or oleophilic additives or their mixture. For this production method diesel fuel with distilled or dehydrated alcohol may be used.

Novel additives according to the claims of this patent are organic or anorganic compounds. The anorganic compound that improves cetane number is ammonium nitrate. Organic compounds are additives prepared with hydrocarbon fraction anitration which contain in addition to n-alkanes the isoalkanes, alkylcyclanes, aromatic alkyls and bicyclic hydrocarbons.

Another patented additive is ammonia compound

quaternized with quaternized nitrogen in nitric acid. Amino compounds for quenching are alkymin or arylamines, aminophenol or alkylamines, alkylaminoalcools or amino compound for quenching which is a condensing product, called amines, with ethylene oxide or propylenol oxide, or the mixture of the mentioned compounds.

Another organic compound for increasing the cetane index, concomitantly with the solubilizing action, according to this patent, are compounds that arise with tenacious nonionic nitration.

The patent also offers solubilized water-fermented alcohol fuels, which compared to classic fuels, contains more oxygenated parts in the engine's combustion cycle and causes a reduction in harmful emissions.

Combustion is achieved with reduced volume of nitrogen oxide (NOx), carbon monoxide (CO), sulfur (SOx) and also decreases smoke emission and reduced engine seating. It is important to note that these fuels make it possible for diesel engines to replace a significant part of petroleum-produced fuel with components originating from renewable or secondary sources.

Industrial use:

The method used by the invention allows replacing part of the petroleum oil used in diesel engines with renewable materials.

For diesel engines this invention makes it possible to prepare biofuels with a content of 5% to 20% of the volume of fermented alcohol without the need to modify the engine's basic building parameters. Additions to fermented alcohol above 20% require the need to adapt the design of engine parameters.

By increasing the addition of fermented alcohol to the fuel the calorific power is reduced, so the same engine power is required to proportionately increase the fuel dose and also to improve the engine combustion cycle.

Most fermented alcohol in diesel (over 20% by volume) worsens combustion fuel capacity. This shortage (low fuel cetane number) is mainly present when the diesel engine is started. The problem can be solved by structural interference with engine operation (2 injection pumps, one for startup, and one for higher ethanol biofuels for diesel engine operation), or the addition of biofuel for engine suction. diesel already in operation.

These construction solutions make it possible to replace from 35% to 15 85% of diesel volume with bi-fuel. These constructive solutions are, however, technically demanding and costly. There is no hope of harnessing on a broader commercial scale. This lack - poor engine start-up as a result of low cetane number - low combustion capacity - can be successfully resolved using the additives according to this invention.

Addition of organic and inorganic compounds or to mixtures

they increase the cetane content sufficiently and allow it to be used in high-alcohol fermented bi-fuel diesel engines.

Examples of the application of the invention:

Only illustrative examples of the application of the invention are listed, but in no way do not restrict the range or any requirements of this patent.

Example 1

Illustrates the acquisition of raw materials for the production method for diesel fuel with fermented alcohol content.

Fermented Alcohol (KL):

Produced by the fermentation of beet sugar and obtained by distillation. For examples of fuel production according to this patent, fermented alcohols of various ethanol contents were prepared. Fermented alcohol with a concentration greater than 96% by volume ethanol was achieved by the molecular sieve dehydration process. Sample marking: KL fermented alcohol, KLx where x is the concentration of ethanol in fermented alcohol in volume%.

These samples are: KL99, 7; KL96; KL93; KL90 and KL85.

Components for the final composition of petrol engine fuels:

05 Diesel (MN):

In the final composition the following components were used: fraction of gasoline and diesel from the primary and secondary processing of crude oil. With different parts of this crude processing two MN samples with different sulfur contents were prepared. MN-sulfur content of 350mg / kg, and sulfur content of 50mg / kg. These samples are: MN350, MN50.

Qualitative parameters of the prepared diesel samples are in Table 1.

Quadrol - Properties of prepared diesel fuel samples Table 1

properties unit MN350 MN50 density kg / mJ 840.7 830 cetane number 52 45 sulfur content mg / kg 350 50 viscosity with mm Vs 2.8 3 40 ° C distillation proof distillation initiation 0C 185 180 distilled quantity% volume 37 38 to 250 ° C distilled quantity% volume 93.9 94 to 350 ° C end of distillation 0C 366 360 combustion point 0C 68 55 (MTF) limit 0C -7,4 -15 phase temperature Solubilizer:

In the examples of the production of fermented alcohol fuels it is used as an improved solubilizing additive for the synergistic mixture of surface active elements. In the examples the acronym OP-Sol is used. The solubilizer thus perfected for professionals in the field of colloidal chemistry represents the mastery of a series of mutually affecting properties in the colloidal microemulsion system. He estimates the required HLB (hydrophobic balance - lyophil) value for the polarity of fuel components, and chooses the right type of frequent surfactant on various surface active elements as an experimental way to determine the solubilizer additive needed to create a stable microemulsion fuel with variable fermented alcohol content, or possibly different water content 10 in the fermented alcohol. The examples also include new organic and inorganic compounds which, as multifunctional additives, in addition to improving cetane number, also improve fuel viscosity and act as anti-corrosive agents while avoiding the separation of fermented alcohol from fuel, that is, it acts as a solubilizer.

Example 2

Demonstrates the preparation and methodology for fuel stability evaluation for diesel engine with different fermented alcohol content.

Method Preparation:

We have prepared two diesel fuel systems with different fermented alcohol content in diesel oil.

Composition A: (diesel - fermented alcohol)

In this diesel sample fermented alcohol was gradually added. After each addition the mixture was stirred to visually assess whether clarity or turbidity had been lost and the resulting phase separation. Additions were continued until the first cloudiness (loss of clarity) appeared. For fuels thus produced the proportion of the components was expressed as a volume%. For each fuel the stability test has been made. The sample was quenched in a test thermostat at 4 ° C and allowed to stand at this temperature for 24 hours. After this time, it was removed from the thermostat to room temperature in the laboratory until it reached 18 ° C. Next, the stability achieved was valued. If the sample remained clear (clear) as a one-phase system was identified with the word "stable". When a cloudiness appeared it was identified as "clouded". If there were two-phase division of system components, it was identified as “unstable.

Composition B: (fermented alcohol - diesel) In the fermented alcohol was gradually added diesel. After each addition the mixture was stirred to visually assess the result. It was evaluated whether there was loss of clarity, turbidity or the consequent phase separation. Additions continued until the first cloudiness appeared (loss of clarity). For fuels thus produced, the proportion of the components was expressed as volume%. For each fuel the stability test was performed as described in composition A.

Example 3

Preparation of diesel fuels other than fermented alcohol. The preparation and assessment of the stability of the elaborated fuels was done as described in example 2.

Fuel Preparation Components:

Diesel MN350, sulfur content 350 mg / kg Fermented alcohol KL99.7

Solubilizer OP-Sol-1, fermented alcohol additive 0.2% by volume of fermented alcohol.

Table 2 - Expresses the relationship between components in% volume in Composition A.

Fuel E5 ElO E20 E30 E40 E50 E60 Diesel MN35O 95 90 80 70 60 50 40 Alcohol ferm. KL99j7 5 10 20 30 40 50 60 Stable Proof Stable Stable Stable Turbid Unstable Unstable stability Table-3 Expresses the ratio of components in% volume in Composition B.

Fuel E95 E90 E80 E70 E60 E50 E40 Alcohol ferm. KL99j7 95 90 80 70 60 50 40 Diesel MN350 5 10 20 30 40 50 60 Stable Proof Stable Stable Stable Turbid Unstable Stability Fuels prepared by Stability tests have not been stable on every Composition A and Composition B system. Composition A the stable ones were the E5, El0, E20 and E30 fuels, in Composition B the E95, E90, E80 to E70 fuels. To achieve stability over the full range of fuel mixture components would require increasing the part of the solubilizer OP-Sol-I in fermented alcohol. Solubilizer participation was increased to 0.8% of the volume of fermented alcohol when stability was achieved over the full range of compositions.

05 SolubilizerOP-Sol-I is a synergistic combination of nonionic surface active components. 30% of the solubilizer forms the ethanolamine condensate product with ethylene oxide, which extends the corrosion protection of the engine combustion system. The resulting HLB (hydrophobic-lyophilin equilibrium) value was 7.2.

Example 4

Demonstrates reduction of sulfur content in the fuel prepared in example 3 in Composition A and Composition B.

Table-4 demonstrates the reduction of sulfur content in fuels with fermented alcohol content.

Fuel Sulfur content in fuel mg / kg for diesel engines MN350 350 Fuel E5 332 ElO 315 E20 280 E30 245 E40 210 E50 175 E60 140 E70 105 E80 70 E90 35 ElOO 0 With the addition of fermented alcohol added to diesel fuel sulfur content is reduced proportionally. Example 5

Fuel preparation for diesel engines, as in example 3, except that the water present in fermented alcohol KL96 was already solubilized in the course of fuel preparation.

05 Fuel Preparation Components:

MN50 diesel with 50 mg / kg sulfur content

Fermented alcohol KL96 with ethanol content in the fermented alcohol at 96% by volume. Solubilizer OP-Sol-2 is a synergistic combination of nonionic surface active components. It contains a copolymer block of ethylene oxide and propylene oxide, 10 alkylphenyl condensate products with ethylene oxide and ethanolamino condensate products with ethylene oxide. The resulting HLB value of the OP-Sol-2 solubilizer was 6.3.

The composition of microemulsion fuels in% by volume is shown in Table 5. Table-5 The composition of microemulsion fuel in% by volume

Fuel E5 E20 E25% volume% volume% volume Diesel MN5O 87 73 69.5 Fermented alcohol KL96 5 20 25 Solubilizer OP-Sol-2 8 7 5.5 The prepared samples were subjected to the stability test according to the system in Example 2. According to this method they were evaluated as stable. According to this method 4% of water present in the fermented alcohol KL96 was solubilized.

Example 6

Increasing the addition of fermented alcohol to diesel fuel changes some of the fuel's useful characteristics - decreasing heat output causing increased fuel consumption decreases cetane number, improves fuel lubricity and decreases corrosive aggressiveness. These useful property changes should be compensated for by the addition of additives to fermented alcohol diesel fuels. Table 6 shows some changes in the quality of fermented alcohol diesel fuel as in example 3. Table 6 - Fuel quality changes as a result of the addition of fermented alcohol. Table 6

Comb Power Measured increase Modification of the cetane consumption (CC) heat input number kW / 1 fuel Ct DC unit decrease MN350 9.7 1 50 KL / MN E10 / 90 9.32 1.041 45.8 4.2 E25 / 75 8.75 1.109 39.5 10.5 E50 / 50 7.42 1.302 29.0 21.0 E70 / 30 7.04 1.378 20.6 29.4 E80 / 20 6.66 1.446 16.4 33 , 6 E90 / 10 6.28 1.545 12.2 37.8 E100 / 0 5.9 1.644 8.0 42.0 From the values in Table-6, it can be observed that with the addition of fermented alcohol in diesel fuel the caloric value of the fuel decreases 05 proportionally. Therefore, to achieve the same engine power the specific fuel consumption must be increased. This can be achieved by adapting the engine injection equipment (higher fuel dose from the injector pump, increasing the injector opening and other adjustments). Another substantial change that happens is the significant drop in cetane value. Fuel with fermented alcohol 10 gradually loses combustion within the working process of diesel fuel.

Example 7

Fuel preparation according to example 3, the difference is that the solubilization of the water present in the fermented alcohol and the decrease in the cetane number as a consequence of the addition of fermented alcohol was solved by the addition of additives according to this. patent. These are multifunctional additives that increase the value of the CET number with solubilizing properties, and depending on the choice and combination of components can increase fuel lubrication as well as increase anti-corrosive fuel capacity. .

Diesel fuel with fermented alcohol content of 10% to 20% by volume was prepared.

Fuel Preparation Components:

Diesel MN50 Fermented Alcohol KL99.7 Multifunctional Additive Example 8

Fuel prepared according to example 7. As a multifunctional fuel preparation additive, a mixture containing 0.3% by volume of ammonium nitrate, 90% by volume of the ethoxylated alkanolamino condenser product, which has nitrogen-quenched nitrogen, was used. 9.7% nitric acid, by volume ethoxylated synthetic alcohol 15 with 3 moles of ethylenoxide per mole of synthetic alcohol. Multifunctional additive was added in the amount of 4% of the volume of fermented alcohol.

The composition of prepared fuels is shown in Table 7.

Table 7 - Composition of fuels in% of volume.

Table 7

ElO fuel E20% volume% volume MN50 86,6 77 KL99J 10 20 Additive 3,4 3 multifunctional Stability test Stable Stable Example 9

Prepared according to example 7. As a multifunctional additive for the preparation of fuels a mixture containing 80% by volume of the fraction of hydrated hydrocarbons containing a mixture of alkanes, isoalkanes, alkylcyclanes, alkylaromates and bicyclic hydrocarbons having a carbon content was used. molecule up to 24, then 20% of the ethoxylated octadecylamino volume. Multifunctional additive was added to the fermented alcohol in an amount of 8% by volume of the fermented alcohol. The composition of prepared fuels is in Table-8.

Table 8 Fuel composition in% of volume.

ElO fuel E20% volume% volume MN50 83,5 74 KL99J 10 20 Additive 6,5 6 multifunctional Stability test Stable Stable Example 10

05 Preparation according to example 7. As a multifunctional additive the mixture containing 60% by volume of ethoxylated ethoxylated alkylphenol with 6 Mols of ethylene oxide, 30% by volume, ethoxylated butanol and 10% of ethoxylated ethane lamina with 3 Mols of ethylene oxide to one mol of ethanamine. Multifunctional additive was added to the fermented alcohol in an amount of 6% by volume of the fermented alcohol.

10 The composition of the prepared fuel is shown in Table 9.

Table-9 Fuel composition in% of volume.

ElO fuel E20% volume% volume MN50 85 75.5 KL99J 10 20 Additive 5 4.5 multifunctional Stability test Stable Stable Example 11

Fermented alcohol fuels presented in the previous examples have some advantages over classic diesel, but also some disadvantages.

Advantages: - Produce less than some exhaust pollutants. They reduce the nitrogen oxide (NOx) content, and produce less solid particles present in the smoke. In the carbon particles of smoke the amount of carcinogens is reduced. As a consequence, the risk of the dangers of cancer diseases is reduced.

05 - Addition of fermented alcohol to fuels decreases relatively its sulfur content and the production of harmful sulfur oxide (SOx) substances, which is greater protection for the environment.

- Addition of fermented alcohol to the fuel reduces the formation of sediment in the engine which extends its useful life.

- With the addition of fermented alcohol to petroleum fuel a good part is replaced by products from renewable sources.

Disadvantages:

Addition of fermented alcohol to fuel:

- Reduces fuel calorific value, which causes higher specific fuel consumption and fuel dose adjustment to adjust fuel timing.

fuel;

- Reduces fuel combustion capacity in diesel cycle, decreases cetane value, this decrease must be adjusted with additives to increase cetane number;

- Reduces fuel lubricity which should be adjusted with lubricant additives;

- Increases aldehyde (CH) content, which for urban transport will require the inclusion of oxidation catalyst equipment to destroy these engine emissions, depending on the amount of fermented alcohol added;

- For the same amount of kilometers traveled with the vehicle using traditional diesel fuel compared to fuel with fermented alcohol added in

As a consequence of the additives, the volume of the fuel tanks needs to be increased.

Higher consumption ratios are shown in Table-6 in Example 6:

Claims (30)

1. “DIETHOL FERMENTED ALCOHOL FUEL PRODUCTION PROCESS FOR DIESEL ENGINES characterized by: (a) the purchase of fermented alcohol (b) the purchase of fermented alcohol with solubilized water (c) the creation of diesel fuel, which includes diesel, solubilized water fermented alcohol and additive, or multifunctional additives or additives or a mixture thereof. The fuel production process according to claim 1 is characterized by fermented alcohol containing from 0.3 and up to 4% by volume or up to 15% by volume of solubilized water in the fermented alcohol. Fuel production process according to claims 1 and 2, characterized by the acquisition of fermented alcohol comprising: a) fermentation process by converting saccharides or saccharin starch into the fermented alcohol, b) the acquisition of the ethanol quota from the fermentation process ; c) fractionation of the ethanol part by the distillation process where fermented alcohol with ethanol concentration of 85% to 96% by volume is obtained, d) acquisition of fermented ethanol with ethanol concentration above 96% by volume by the technical process of dehydration. The fuel production process according to claim 3, is characterized by the raw materials for the fermentation process selected from the following groups: beet sugar, molasses, sugar cane, cane molasses, raw material starches such as potatoes, cereals, tropical and subtropical amides, cassava, potatoes, sorghum, Jerusalem artichokes, chicory; ligno-cellulose raw materials such as straw, cellulose paper, wood waste in industry and agriculture, such as phyto mass, dendromass; secondary raw materials waste paper and waste from cellulose sulphite production, sulphite extract, or fermentation raw materials which are a mixture of some of these. Fuel production process according to claims 3 and 4, characterized by the fractionation of part of the ethanol in the fermentation process, either in incubation form or continuously in distillation boilers; distillation equipment with one distillation column or more columns working at different pressures; with fractionation of the proportion of ethanol by the fermentation process; Made in distillation equipment, which to reduce heating and cooling costs uses heat pump system or heat pumps. Fuel production process according to claim 1 to 1, characterized by the acquisition of fermented alcohol with solubilized water which is achieved by solubilizing water in the fermented alcohol. Fuel production process according to claim 6, characterized in that the solubilization is carried out in the fraction in the fermented alcohol or only after in the created fuel containing diesel and also water fermented alcohol. A fuel production process according to claims 6 and 7, characterized by solubilization by the addition of solubilizer, or by the addition of a multifunctional additive, or by the addition of multifunctional additives or a mixture thereof. 9. The fuel production process according to claims 6 to 8 is characterized by the solubilizer, active element chosen from the group of surface active substances or mixtures thereof composed of neon, or anion or ampholytic. 10. The fuel production process according to claims 6 to 8 is characterized by the solubilizer as the active element chosen from the group of surface active substances or mixtures thereof composed of cationos or neiones or ampholitics; The fuel production process according to claim 6 to 10, is characterized by solubilization which creates a one-piece system with smaller size as 10000; The fuel production process according to claims 6 to 11 is characterized by diesel fuel with solubilized part of alcohol fermented in water, when the fuel forms a colloidal microemulsion system where the dispersed phase of the micro emulsion has parts of size 10000 and up to 200000; A fuel production process according to claims 11 and 12, characterized in that the solubilized amount of water-fermented ethanol in the fuel is up to 5%, 30% or 95% by volume; A fuel production process according to any one of claims 11 to 13, characterized by fuel containing diesel up to 95%, 70% to 5% by volume; A fuel production process according to claims 1 to 14, characterized by additives still contained in the fuel; The fuel production process of claim 15 is characterized by the choice of oleophilic or hydrophilic functional additives or mixtures thereof; The fuel production process according to any one of claims 1 to 16, is characterized by functional additives which improve cetane number or act against corrosion of the combustion system of engines, improve the low capacity of ethanol present in the fuel; decreases smoke by using functional, multifunctional additive blends or multifunctional additive blends to improve various fuel properties; The fuel production process according to claims 15 to 17 is characterized by the improvement that the additive adds to the cetane number (combustion fuel capacity in the diesel engine cycle) by adding a compound group additive. anorganic compounds or organic compounds or mixtures thereof; Fuel production process according to Claim 18, characterized in that the inorganic compound is added with ammonium nitrate in the amount of 0.01% to 10% by volume in the fuel; The fuel production process of claim 18 wherein the organic compound added in the amount of 0.01% to 10% by volume in the fuel; The fuel production process according to claims 18 and 20, characterized in that the organic compounds are nitrate hydrocarbons; The fuel production process according to claim 21 wherein the nitrate hydrocarbon alkyl has an egalitarian or branched or cyclic catenular structure or alkyl is the compound thereof; The fuel production process according to claim 22 wherein the alkylate in hydrocarbons nitrates are alkyls of the carbide hydrocarbon fraction in molecule up to 18 or alkyls of the carbonated oil carbide fraction in number. Carbide molecules up to 24 or alkyl are composed of the gasoline fraction and gasified oil fraction. The fuel production process according to claim 22 is characterized in that the alkylates in nitrate hydrocarbons which are alkyls of the carbide numbered n-paraphenic hydrocarbon moiety of up to 24 molecules; The fuel production process according to claims 21 to 24 is characterized by the organic additive which improves the cetane number of the fermented alcohol content diesel fuel achieved by nitration of the hydrocarbon fraction which contains in addition to n-alkanes. isoalkanes, alkylcyclanes, alkylaromates and bicyclic hydrocarbons. The fuel production process according to claims 18 and 20 is characterized by the organic additive which improves the cetane number of the fermented alcohol content fuel by adding quaternary ammonium compound having nitric acid quaternized nitrogen; A fuel production process according to claim 26 characterized in that the amine compound for quenching is alkyne or arylamine or aminophenol or alkanolamine or alkyamino alcohol or quenching amine compound which is amine condensate, named with ethylene oxide or mixture. of compound nominees. The fuel production process of claim 18e20 is characterized by the organic compound which improves the cetane number of the fermented alcohol content fuel by adding non-ionic surfactant nitrate product; A fuel production process according to claim 28, characterized in that the nonionic surfactant is alkyl polyglycol ether, ethylene oxide propyleneoxy block copolymer, alkanolamid polyglycol ether or a mixture thereof. The fuel production process according to claim 8 is characterized by the multifunctional additive containing compound functional additives for improving cetane number, for improving corrosion resistance of the engine combustion system, for improving lubricity. ethanol present in the fuel and to reduce the smoke still containing solubilizer.