KR101155272B1 - Additives for manufacturing emulsion fuel oil and emulsion fuel oil comprising the same - Google Patents

Abstract

The present invention is a novel additive as an additive for the production of emulsified fuel oil of waste oil, waste water or waste liquid which is a by-product generated in the process of purifying raw oil obtained by milking biomass containing fat or oil to obtain biodiesel raw oil. It provides an emulsified fuel oil comprising the use and the additive.
In the present invention, waste oil, waste water or a mixture thereof, which is used as an additive for preparing an emulsion raw material oil, may replace an emulsifier or water that is an emulsion raw oil component, and may additionally replace a portion of light oil or heavy oil, especially bunker C oil. When the additive according to the present invention is a by-product generated in the process of obtaining the biodiesel raw oil by refining the raw oil obtained by milking the biomass containing fats and oils, the manufacturing cost of the emulsified fuel oil can be greatly reduced. Can be. In addition, the emulsion fuel oil prepared using the additive according to the present invention is expected to improve combustion performance and combustion efficiency because the dispersed phase has a very fine droplet size, and the emulsion state of the dispersed phase having a fine droplet size lasts for a long time and is excellent. It is more advantageous in terms of distribution since it has storage stability (or phase stability).

Description

Additives for manufacturing emulsion fuel oil and emulsion fuel oil comprising the same}

The present invention relates to an additive for preparing an emulsified fuel oil and an emulsified fuel oil including the same, and more particularly, to a process of obtaining a biodiesel raw oil by refining raw oil obtained by milking a biomass containing fat or oil. A novel use as an additive for the production of emulsified fuel oils of waste oils, waste waters or mixtures thereof by-products, and emulsified fuel oils comprising the additives.

Due to the recent limitations of petroleum resources, international oil prices continue to rise, and high oil prices are expected to continue in the future. In this era of high oil prices in Korea, research on the efficient use of energy resources and the resolution of environmental pollutants is required at the same time.

Currently, bunker C oil, which is heavy oil, is most commonly used as an energy source for the process in Korea, and bunker C oil is manufactured from about 40% of heavy oil produced at atmospheric distillation process in domestic refineries. However, as the demand for high-quality light oil continues to increase, domestic refiners have increased the output of light oil through the refinery's upgrading facilities, which has significantly increased the selling price of low-priced heavy oil. In addition, complex factors, such as institutional tightening of environmental regulations, have made fuel oil more difficult to use. As a result, many industrial sites are considering ways to reduce fuel costs that have increased due to the rise in heavy oil prices. However, there are no technical solutions to improving combustibility and reducing pollutant generation.

On the other hand, dispersing one liquid in the form of fine particles in another liquid that is not mixed is called emulsification and the mixture is called an emulsion. That is, the emulsion refers to the case where both the continuous phase (or dispersion medium) and the dispersed phase (or dispersoid) in the form of droplets are liquids. Like other colloidal systems, the area of the interface becomes larger as the dispersed phase is smaller. Emulsion (emulsion) fuel oil, which has attracted attention as an efficient method of using heavy oil, is a fuel produced by mixing oil-water phases that are not well mixed with each other in a uniform dispersed phase. The use of oil has been developed mainly to improve the combustibility and reduce the environmental pollution of low heavy fuels with high pollution. Emulsion fuel oil refers to fuel oil which is maintained in an emulsion state by mixing and dispersing a certain ratio of water in heavy oil, especially oil such as bunker C oil. Although general oil has a problem of soot generated by incomplete combustion during combustion process, emulsion fuel oil not only saves oil by using water, but also due to rapid explosion (microexplosion) of water droplets mixed with oil. Thermal efficiency is improved and smoke is reduced due to complete combustion. Therefore, in order to develop alternative energy, improve efficiency of existing energy and minimize environmental pollution, the government has also used emulsified fuel oil in accordance with the performance standards and inspection method of air pollution prevention facilities (combustion aids) and inspection method (Ministry of Environment Notice 2001-35). Is highly recommended.

As a method of preparing the emulsified fuel oil as described above, there is a method of mixing oil and water by injecting an emulsifier (surfactant). The method of using such an emulsifier does not evenly mix oil and water despite the addition of the emulsifier. Since emulsifiers are also manufactured from petroleum, the use of crude oil is inevitable in the process, and furthermore, unnecessary by-products or harmful by-products are generated in the production process of the product. Emulsifiers used in the production of emulsified fuel oils include inorganic emulsifiers composed mainly of water-soluble salts such as NaCl, MgCl, CaCl ₂ , EDTA-4Na, or mixtures thereof, and organic emulsifiers composed of Span 80, NP8, or mixtures thereof. Emulsified fuel oils containing these emulsifiers are called inorganic emulsion fuel oils and organic emulsion fuel oils, respectively. On the other hand, the theory of microexplosion, which is the principle of complete combustion of emulsified fuel oil, is that the water in the fine emulsion state is heated rapidly due to the heat generated during the combustion of the oil, causing microexplosion, and making the unburned oil even smaller. It is based on the principle of improving the overall combustion efficiency of the oil in a way to improve the contact efficiency with air by dispersing the oil. In order to improve the combustion performance and the combustion efficiency of the emulsified fuel oil according to the microexplosion theory, It is advantageous for the droplets to be present in the emulsion to be smaller in size. However, conventional inorganic oil fuel oil and organic oil fuel oil has a problem that there is a limit to the size of the droplets. In addition, in order to improve the storage stability of the emulsified fuel oil, it is important to maintain the emulsion state for a long time, that is, the phase stability. In the case of the conventional inorganic emulsion oil and organic emulsion fuel oil, the droplet size increases rapidly during storage, resulting in poor phase stability. There is this.

The present invention was derived to solve the conventional problems, one object of the present invention is a waste oil which is a by-product generated in the process of obtaining a biodiesel raw oil by refining the raw oil obtained by milking the biomass containing fats and oils, It is an object of the present invention to provide a novel use as an additive for producing emulsified fuel oil of wastewater or a mixture thereof.

It is a further object of the present invention to provide an emulsified fuel oil having improved economy due to very fine droplet size and excellent stability (ie, phase stability) and low manufacturing cost of the droplet size.

In order to solve the object of the present invention, the present invention is a waste oil, waste water or a mixture thereof, which is a by-product generated in the process of refining a raw oil obtained by milking a biomass containing a fat or oil into biodiesel raw oil. It provides an additive for producing an emulsified fuel oil.

The biomass is characterized in that the oil seed (Oil Seed), wherein the milking is characterized in that the non-shell shell milking.

In addition, the purification is characterized in that the degumming (degumming) process. At this time, the degumming process is characterized in that the water-soluble degumming process. In addition, the waste oil, waste water and waste fluid is characterized in that it comprises a phospholipid (phospholipid).

In order to solve the other object of the present invention, the present invention provides an emulsified fuel oil containing the above-mentioned additives and heavy oil.

The average droplet size of the dispersed phase of the emulsified fuel oil is characterized in that 1 ~ 50㎛.

Preferably, the average droplet size of the dispersed phase of the emulsified fuel oil is characterized in that 5 ~ 20㎛.

In addition, the emulsified fuel oil preferably consists of 5 to 15% by weight of waste oil, 65 to 85% by weight of heavy oil and 10 to 20% by weight of water as an additive.

In addition, the emulsified fuel oil is preferably composed of 10 to 20% by weight of wastewater and 80 to 90% by weight of heavy oil as an additive.

In the present invention, waste oil, waste water or a mixture thereof, which is used as an additive for preparing an emulsion raw material oil, may replace an emulsifier or water that is an emulsion raw oil component, and may additionally replace a portion of light oil or heavy oil, especially bunker C oil. When the additive according to the present invention is a by-product generated in the process of obtaining the biodiesel raw oil by refining the raw oil obtained by milking the biomass containing fats and oils, the manufacturing cost of the emulsified fuel oil can be greatly reduced. Can be. In addition, the emulsion fuel oil prepared using the additive according to the present invention is expected to improve combustion performance and combustion efficiency because the dispersed phase has a very fine droplet size, and the emulsion state of the dispersed phase having a fine droplet size lasts for a long time and is excellent. It is more advantageous in terms of distribution since it has storage stability (or phase stability).

Figure 1 schematically shows a process for producing biodiesel raw material oil.
Figure 2 is a photograph immediately after the degumming of the vegetable raw material oil in the embodiment of the present invention.
Figure 3 is a photograph showing the state when the degumming waste liquid taken by degumming and layered vegetable raw material oil in the embodiment of the present invention.
Figure 4 is a micrograph of the waste oil (left) and the wastewater (right) corresponding to the upper layer of the waste liquid obtained in the embodiment of the present invention.
Figure 5 is a micrograph showing the droplet size change of the dispersed phase over the storage period of the emulsified fuel oil prepared by using waste oil as an additive in Preparation Example 1 of the present invention.
Figure 6 is a micrograph showing the droplet size change of the dispersed phase over the storage period of the emulsified fuel oil prepared by using wastewater as an additive in Preparation Example 2 of the present invention.
7 is a graph showing the change in the average droplet size of the dispersed phase over the storage period of the four types of emulsified fuel oil prepared in Preparation Examples 1 and 2 and Comparative Preparation Examples 1 and 2 of the present invention.

According to an aspect of the present invention, the emulsified fuel oil may be substituted with an emulsifier or water which is an emulsified raw oil component, and may additionally replace a portion of heavy oil, and may further refine the droplet size of the emulsified fuel oil. The present invention relates to an additive capable of improving phase stability.

Figure 1 schematically shows a process for producing biodiesel raw material oil. As shown in Figure 1 biomass containing fats, especially plant biomass containing higher fat, for example, milking by mechanical pressing after harvesting the fruit of the oil crops and demineralization process to remove the flesh and skin To obtain a liquid vegetable raw material oil. There are many phospholipid components, free fatty acids, pigment components, etc., depending on the type of vegetable raw oil. In addition, the vegetable raw milk may contain a lot of solids and moisture depending on the harvesting and milking process. Vegetable oil is then converted to biodiesel raw materials after refining to remove impurities. The impurity refining process can be divided into solids removal process, water removal process, degumming (mainly phospholipid removal) process, and deoxidation (primarily free fatty acid removal) process. It can be used as. By-products generated in the above purification process, in particular in the degumming process, are mainly generated in the form of waste oil, waste water, or waste liquids thereof. The biodiesel crude oil is then converted to biodiesel through transesterification. Biodiesel is an alternative to petroleum-based diesel, and is made from renewable resources such as vegetable oils and animal fats. Chemically, biodiesel is a mixture of single alkyl esters with long fatty acid rings. A lipid transesterification reaction is used to convert the original oil to the desired ester and to remove free fatty acids. Through this process, biodiesel, unlike non-aromatic vegetable oils, has very similar combustion characteristics as diesel, and can replace diesel in most cases. More specifically, the method of preparing biodiesel from biodiesel raw oil generally shows that biodiesel raw oil exists as triglycerides in which three fatty acids and one glycerol are combined, and biodiesel is a triglyceride in which three fatty acids are combined with glycerol. The glycerol is separated from the glycerides and then produced through a transesterification reaction to produce fatty acid esters. The biodiesel produced at this time is fatty acid methyl ester (FAME).

The additive for producing an emulsified fuel oil according to the present invention is waste oil, waste water, or a mixture thereof, which is a by-product generated in the process of refining raw oil obtained by milking a biomass containing fat or oil into biodiesel raw oil. Is done.

Biomass (biomass) is a generic term for biological resources used as chemical energy, in the present invention, if the biomass contains fats and oils, the kinds of animals, plants, etc. are not greatly limited, and plant biomass is considered in consideration of commerciality and economy. It is preferable that it is a mass, and it is more preferable that it is an oil seed (Oil Seed). Animal biomass containing fats and oils in the present invention include fish, chickens, birds such as ducks, mammals such as pigs and cows. Oil seed refers to vegetable oil crops that can be oiled. More specifically, sunflower seeds, soybeans, rapeseed seeds, jatropha seeds, palm fruits, and rice bran and camellia fruits, which are by-products of the brown rice production process. , Gum fruits and by-products after coffee extraction.

Milking in the present invention means obtaining the raw material oil from the biomass, and is usually divided into two methods, a compression method and an extraction method. The compression method is a method of obtaining a raw material oil by applying mechanical pressure to the biomass, and is used for crops having a high content. The extraction method is a method of extracting a fat or oil of a biomass with a volatile solvent and then removing the solvent to obtain raw oil, and is used for crops having a low content rate. Since the biomass used in the present invention is preferably a crop having a high content, the milking method is also preferably a compression method, but is not limited thereto. In addition, milking may be divided into non-shelled milking, which includes milking and peeling of the biomass, especially oilseed crops, including shelling during milking, and shelled milking, which is milked after removing the skin. Milking in the present invention is non-shelled milking and shelling. Includes all milking. On the other hand, the present inventors found that the raw material oil contains more phospholipid than in non-shelled milking through experiments, and more phospholipids in the process of refining the raw oil obtained by non-shelled milking, in particular in the degumming process It is anticipated that waste liquids will be included. In addition, waste liquids containing a large amount of phospholipids, which are natural surfactants, are expected to have great utility as emulsifiers in the production of emulsified fuel oils. In consideration of the fact that the economic utilization of the by-products generated in the biodiesel production industry plays an important role in improving the economics of the entire business, the milking in the present invention is preferably non-shelled milking.

In the present invention, refining means waste oil, waste water, or a mixture thereof as a by-product in the process of converting raw oil into biodiesel raw oil such as degumming (mainly phospholipid removal) process, deacidification (mainly free fatty acid removal) process, washing process, and water removal process. If the waste liquid is generated, the kind thereof is not greatly limited, and degumming is considered in consideration of the amount of waste oil, waste water or a mixture thereof, and the components contained in the waste oil, waste water, or a mixture thereof. desirable. Colloidal impurities such as phospholipids, proteins, and carbohydrates contained in fats and oils (raw oil in the present invention) are called gums, and the process of removing them is called degumming. Degumming processes include acid degumming, which is an acid-using method, water soluble degumming by hydration, and washing degumming, and mainly remove phospholipids contained in raw material oil. In the present invention, the type of degumming process is not particularly limited, but it is preferable that the degumming process is a demanded degumming process in consideration of the amount of waste liquid generated and the amount of phospholipid contained in waste oil, waste water, or a mixture thereof. On the other hand, the waste liquid generated during the refining of raw material oil is generated in a form that includes two types such as waste oil and waste water. When the crude oil is refined, in particular, water soluble degumming, the degumming raw oil in the upper layer and the waste liquid in the lower layer are separated. At this time, the hydrated phospholipid flows into the waste liquid and draws the surrounding degumming oil together, which is called entrainment. Therefore, the waste liquid coexists with the waste oil mainly containing hydrated phospholipids and waste oils present in components similar to the degumming oil.

The process of refining the raw oil obtained by milking the biomass containing fat or oil into biodiesel raw oil, in particular, waste oil, waste water, or a mixture thereof, which is a by-product generated from the degumming process, more specifically, a water-soluble degumming process, is used. Since it contains a phospholipid which is a surfactant, it can be used as an emulsifier component in preparing an emulsified fuel oil. More specifically, the waste oil may be composed of a large amount of oil / phospholipids / a small amount of water, so that not only the emulsifier component but also a portion of light or heavy oil may be substituted. In addition, since the wastewater is composed of a large amount of water / phospholipid / a small amount of oil, it can be used as an emulsifier component, and the fuel emulsified oil can be composed of only light oil or heavy oil and waste water without adding water. In addition, the waste liquid is a mixture of waste oil and waste water, and thus has all the characteristics of waste oil and waste water.

Another aspect of the present invention relates to an emulsified fuel oil containing the above-mentioned additives, and is a waste oil, waste water or by-products generated in the process of refining raw oil obtained by milking a biomass containing fat or oil into biodiesel raw oil. Emulsified fuel oils containing the waste liquid as a mixture thereof as an emulsifier component or the like have improved economy due to very fine droplet size and excellent stability of droplet size (ie, phase stability) and low production cost.

In the present invention, the emulsified fuel oil includes the aforementioned additives and heavy oil. In addition, the emulsified fuel oil according to the present invention may include light oil instead of heavy oil. Heavy oil is oil obtained by distilling gasoline, petroleum, and light oil from crude oil, and is mainly used for heating diesel engines, boilers, and for thermal power generation. The quality of heavy oil is divided into three types, A heavy oil, B heavy oil and C heavy oil, depending on specific gravity (0.9 ~ 0.95) and viscosity. C heavy oil is a heavy oil having a high adhesiveness of 50 cst (50 ° C.) or more and is commonly referred to as bunker C oil. In addition, A heavy oil has the lowest viscosity among the three types of heavy oil and is also referred to as heavy diesel oil.

In addition, the emulsified fuel oil according to the present invention is not significantly limited in the average droplet size of the dispersed phase, in consideration of compatibility when applied to a conventional combustion device may be 1 ~ 50㎛, more preferably may be 5 ~ 20㎛ have.

Specifically, when the waste oil is used as an additive, the emulsified fuel oil is composed of 5 to 15 wt% of waste oil, 65 to 85 wt% of heavy oil, and 10 to 20 wt% of water. In the case of using waste oil as an additive, the additive also acts as an emulsifier component, and in part, as a substitute for heavy oil. In addition, when the wastewater is used as an additive, the emulsified fuel oil is composed of 10 to 20% by weight of wastewater and 80 to 90% by weight of heavy oil. In this case, the wastewater acts as an emulsifier component, and since the wastewater content is sufficient to supply sufficient water, no separate water is required.

Hereinafter, the present invention will be described in more detail with reference to Examples. However, the following examples are only intended to illustrate the present invention more clearly and do not limit the protection scope of the present invention.

Biodiesel Crude oil  And Waste  Produce

Seeds of tropical oil crops which were not shelled were milked by mechanical pressing to obtain vegetable raw oils. In order to purify the vegetable raw material oil obtained, water-soluble degumming was performed. As an experimental method, 900 ml of the vegetable raw material oil was quantitatively placed in a round bottom flask equipped with a thermometer and a stirrer, and preheated in a water bath at 85 ± 2 ° C. When the temperature of the vegetable raw material oil reached 85 deg. C, which was degumming, 100 ml of distilled water was added as a degumming agent, followed by continuous stirring at a rotational speed of 400 rpm for 5 minutes to complete degumming. Figure 2 is a photograph immediately after the degumming of the vegetable raw material oil in the embodiment of the present invention. As shown in FIG. 2, the hydrophilic head of the phospholipid reacted with the water particles to form micelles and slowly sinked.

In order to separate the degumming vegetable raw material oil (hereinafter referred to as vegetable biodiesel raw material oil) and the degumming waste liquid, the degumming completed liquid was allowed to stand at 80 ° C for 24 hours. After standing for 24 hours, the vegetable biodiesel raw material oil and the degumming waste liquid were completely separated, and the upper layer formed the vegetable biodiesel raw material oil layer, and the lower layer formed the degumming waste liquid layer. Thereafter, only the degumming waste liquid of the lower layer was taken and stored in a cold place. Figure 3 is a photograph showing the state when the degumming waste liquid taken by degumming and layered vegetable raw material oil in the embodiment of the present invention. As shown in Fig. 3, the degumming waste liquid was separated into two layers again, the upper black liquid was the waste oil portion of the degumming waste liquid, and the light brown portion of the lower layer was the waste water portion of the degumming waste liquid. The presence of the upper part of the waste oil in the waste fluid is due to the entrainment in which the hydrated phospholipids are transferred to the waste fluid and pull together the surrounding degumming vegetable raw material oil.

Table 1 shows the results of analyzing the components of waste oil and wastewater in the degumming waste liquid obtained above. In Table 1, the phosphorus content was analyzed by AOCS (American Oil Chemists' Society) standard analysis method.

Analysis item Waste Oil (Upper Floor) Wastewater (lower floor) Phosphorus content (ppm) 7.83 5.66 Acid value (mg KOH / g) 44.18 2.10 Moisture content (%) 0.34 More than 98%

Figure 4 is a micrograph of the waste oil (left) and the wastewater (right) corresponding to the upper layer of the waste liquid obtained in the embodiment of the present invention. As a microscope, an optical microscope (SV, Video Microscope System, Sometech) having a magnification performance of 2,400 times was used. As shown in Figure 4 it can be seen that the particles of the emulsion form in the waste water and waste oil. As a result, a small amount of water is contained in the waste oil and a small amount of oil is mixed in the wastewater, and at the same time, it can be seen that the phospholipids present in the waste oil and the wastewater act as emulsifiers.

2. Preparation of Emulsified Fuel Oil

Preparation Example 1. (Manufacture of emulsified fuel oil using waste oil)

Water and waste oil were added to bunker C oil and stirred for 5 minutes at 3000 rpm using a homomixer to prepare an emulsified fuel oil. The emulsified fuel oil consisted of 75 wt% bunker C oil, 15 wt% water, and 10 wt% waste oil.

Preparation Example 2 (Manufacture of Emulsified Fuel Oil Using Wastewater)

Wastewater was added to bunker C oil and stirred for 5 minutes at 3000 rpm using a homomixer to prepare an emulsified fuel oil. The emulsified fuel oil consisted of 85% by weight bunker C oil and 15% by weight wastewater.

Comparative Production Example 1. (Inorganic emulsion fuel oil production)

Water and an inorganic emulsifier were added to the bunker C oil and stirred for 5 minutes at 3000 rpm using a homomixer to prepare an inorganic emulsified fuel oil. As the inorganic emulsifier, a mixture of NaCl, MgCl, CaCl ₂ and EDTA-4Na was used. The inorganic emulsified fuel oil consisted of 85 wt% of bunker C oil, 14.7 wt% of water, and 0.3 wt% of an inorganic emulsifier.

Comparative Production Example 2 (Production of Organic Emulsified Fuel Oil)

Water and an organic emulsifier were added to the bunker C oil and stirred for 5 minutes at 3000 rpm using a homomixer to prepare an inorganic emulsified fuel oil. As the organic emulsifier, a mixture of Span 80 and NP8 was used. The organic emulsified fuel oil consisted of 84.5 wt% bunker C oil, 15 wt% water, and 0.5 wt% organic emulsifier.

3. Evaluation of Phase Stability with Storage Period of Emulsified Fuel Oil

According to the storage period of the emulsified fuel oil in order to determine the phase stability (degree of retention of the emulsion form) according to the storage period of the emulsified fuel agent prepared in Preparation Example 1, Preparation Example 2, Comparative Preparation Example 1, and Comparative Preparation Example 2 Droplet size changes of the dispersed phase were observed under a microscope. An optical microscope (SV, Video Microscope System, Sometech) having a 2,400 times magnification performance was used. The storage temperature of emulsified fuel oil was 40 degreeC.

Figure 5 is a micrograph showing the droplet size change of the dispersed phase over the storage period of the emulsified fuel oil prepared using waste oil as an additive in Preparation Example 1 of the present invention, Figure 6 is a wastewater additive in Preparation Example 2 of the present invention Is a micrograph showing the droplet size change of the dispersed phase with the storage period of the emulsion fuel oil prepared using As shown in FIG. 5, in the emulsified fuel oil using waste oil, large droplets began to appear on the 8th day when large droplets started to appear due to the aggregation of small droplets after 5 days of manufacture. On the 36th day of storage, large droplets of 50 µm or larger began to appear, indicating stability instability. As shown in FIG. 6, it was possible to prepare emulsified fuel oil having a smaller droplet size than when using waste oil. In the emulsified fuel oil using waste water, the change of droplet size was not large and kept very small until about 15 days after the preparation. Only the evenly dispersed droplets at the time of initial manufacture became slightly non-uniform with storage days. On the 36th day of storage, the size of the droplets was slightly increased.

7 is a graph showing the change in the average droplet size of the dispersed phase over the storage period of the four types of emulsified fuel oil prepared in Preparation Examples 1 and 2 and Comparative Preparation Examples 1 and 2 of the present invention. As shown in FIG. 7, when the waste oil and the waste water were used, the emulsified fuel oil having droplets smaller in size than the conventional inorganic and organic emulsifiers was possible. In general, the smaller the size of the droplets of the dispersed phase of the emulsified fuel oil, the better the combustion performance and the combustion efficiency of the emulsified fuel oil. The efficiency is expected to be better. In addition, even if the correlation of combustion performance and efficiency according to the droplet size is different from that described above, the use of waste oil or waste water can reduce the stirring time required to make the same droplet size than the case of using an inorganic emulsifier or an organic emulsifier. It can be seen that it is more advantageous in terms of saving time and energy.

In addition, it is important for the emulsion fuel oil to have a long lasting emulsion state, that is, to have a phase stability in order to have a storage stability, while using waste oil and waste water while maintaining a smaller droplet size than using an inorganic emulsifier or an organic emulsifier. Even after more than one day, there was no rapid increase in droplet size. Even if the size did not tend to increase rapidly. Through the above results, the process of refining the raw material oil obtained by milking the biomass containing fats and oils, in particular oil crops, into biodiesel raw oil, in particular, the waste oil which is a by-product of the degumming process, waste water or a mixture thereof It can be seen that the emulsified fuel oil may be substituted for the conventional emulsifier, and the emulsified fuel oil having a smaller droplet size in the dispersed phase than the conventional inorganic emulsifier or the organic emulsifier and having excellent storage stability may be prepared.

Claims (10)

An additive for producing an emulsified fuel oil consisting of waste oil, waste water, or a mixture thereof, which is a by-product generated in the process of refining raw oil obtained by milking a biomass containing fat or oil into biodiesel raw oil. The additive of claim 1, wherein the biomass is an oil seed. The additive for producing an emulsified fuel oil according to claim 2, wherein the milking is at least one of shell shelled milk and nonshell shelled milk. The additive for producing an emulsified fuel oil according to claim 1, wherein the refining is performed by a degumming process. 5. The additive of claim 4, wherein the waste oil, waste water and waste fluid comprise phospholipids. Emulsified fuel oil containing the additive of any one of Claims 1-5, and heavy oil. The emulsified fuel oil according to claim 6, wherein the average droplet size of the dispersed phase is 1 to 50 µm. The emulsified fuel oil according to claim 7, wherein the average droplet size of the dispersed phase is 5 to 20 µm. The emulsified fuel oil according to claim 6, wherein the additive comprises 5-15 wt% of waste oil, 65-85 wt% of heavy oil, and 10-20 wt% of water. The emulsified fuel oil according to claim 6, wherein the additive comprises 10-20 wt% of wastewater and 80-90 wt% of heavy oil.

Images