KR102214495B1 - Method for manufacturing eco-friendly alcohol fuel and eco-friendly alcohol fuel - Google Patents

Abstract

The present invention relates to an eco-friendly alcohol fuel manufacturing method and thereby an eco-friendly alcohol fuel, which contains high-purity refined oil produced using waste cooking oil in a high content so that it is eco-friendly, has no soot, has high calorific value, and has excellent ignition performance, It is also suitable for manufacturing body type fuel.

Description

Eco-friendly alcohol fuel manufacturing method and eco-friendly alcohol fuel by it {METHOD FOR MANUFACTURING ECO-FRIENDLY ALCOHOL FUEL AND ECO-FRIENDLY ALCOHOL FUEL}

The present invention relates to alcohol fuel, in particular, by including high-purity refined oil produced using waste cooking oil in a high content, it is eco-friendly, has no soot, has high calorific value, has excellent ignition performance, and is suitable for producing gel-type or solid fuels. It relates to an alcohol fuel manufacturing method and an eco-friendly alcohol fuel thereby.

Fuels used as energy sources for thermal power are largely divided into solid fuels such as charcoal, coke, and coal, liquid fuels such as alcohol, benzol, and gasoline, and gaseous fuels such as LPG.

Recently, as one of these energy sources, a gel-type or solid-type alcohol fuel that is easy to carry and use has been used.

Conventional solid alcohol fuels were prepared by mixing alcohol, fats and oils, and caustic soda, and had problems such as dangers due to generation of toxic gases, instability due to lack of stability during storage, and large amounts of residues after combustion. Therefore, various studies have been conducted to solve this problem.

As such a prior art, Korean Patent Registration No. 10-0178868 discloses a method of manufacturing fuel by aging for a certain period of time by adding a large amount of water as the main raw material, and adding animal oil, petroleum oil, and caustic soda. Registered Patent No. 10-1310121 includes a first solution composed of 1 to 20% by weight of a hydrophilic resin and 20 to 90% by weight of an alcohol-based solvent, 1 to 30% by weight of a lipophilic resin, and 1 to 1 of a ketone-based solvent. Disclosed is a solid fuel formed by mixing a second solution composed of 50% by weight and 0.1 to 10% by weight of a thickener to increase viscosity. In addition, in Korean Patent Laid-Open No. 10-2000-0007017, 1N caustic soda 3Kg is added to 1 liter of water and diluted, then 10 kg of copper and vegetable oil is added and mixed while heating to saponify and cool to form a solid. After finely pulverizing using a pulverizing device such as a roll, 1 kg of the saponified solid is added to 20 liters of alcohol, and then heated at a temperature that does not ignite in a water bath for about 30 minutes. When the solid is dissolved in methyl alcohol, the heating is stopped. A method of preparing by cooling in a container is disclosed.

However, all of the fuels of these prior patents are not environmentally friendly because there are many generations of harmful gases in the form of soot during combustion, and there is still room for improvement in terms of calorific value.

Korean Registered Patent Publication No. 1310121 (2013.09.06.)

Accordingly, the present invention has been proposed to solve the problems of the related art as described above, and an object of the present invention is to contain high-purity refined oil produced using waste cooking oil in a high content, so that it is eco-friendly, has no soot, and has a high calorific value. It is excellent and is to provide an eco-friendly alcohol fuel manufacturing method suitable for producing a gel-type or solid fuel, and an eco-friendly alcohol fuel by the method.

In order to achieve the above object, an eco-friendly alcohol fuel manufacturing method according to the technical idea of the present invention comprises the steps of separating the waste by filtering the waste edible oil collected from each place with a sieve; Putting the waste cooking oil from which the residue was separated in a container and first stirring at a temperature of 45 ~ 58 ℃; Removing the glycerin contained in the waste cooking oil while first stirring the waste cooking oil to form a low-purity refined oil; Secondarily stirring the low-purity refined oil at a temperature of 45 to 58°C; Forming a medium-purity refined oil by removing impurities contained in the low-purity refined oil while secondary stirring the low-purity refined oil; Drying the medium-purity refined oil while tertiary stirring at a temperature of 75-88° C. higher than during the first and second stirring to form a high-purity refined oil; Mixing high-purity refined oil and methyl alcohol; proceeds to prepare an alcohol fuel, and when mixing high-purity refined oil and methyl alcohol, methyl alcohol is mixed in an amount of 70% by weight or more and less than 80% by weight in 100% by weight, and the remainder is of high purity. Refined oil and water are mixed, but high-purity refined oil and water are mixed in a weight ratio of 1:0.75 to 1.25.

Here, when mixing high-purity refined oil and methyl alcohol, a thickener that increases viscosity may be further mixed to prepare an alcohol fuel solidified in a gel or solid form.

In addition, when the waste cooking oil is first stirred, in order to remove glycerin contained in the waste cooking oil, methanol and sodium hydroxide are placed in a container at a weight ratio of 36:1, and a catalyst mixture is added with stirring at 300rpm.

In addition, during the secondary stirring of the low-purity refined oil, to remove the impurities contained in the low-purity refined oil, a cleaning solution in which water and acetic acid are mixed in a weight ratio of 100:0.4 is mixed, and when the impurities are removed from the low-purity refined oil, the cleaning solution is removed. It can be characterized by that.

In addition, it may be characterized in that the process of removing impurities from the low-purity refined oil is repeatedly performed.

In addition, when mixing the cleaning solution with low-purity refined oil, a first sub-step of collecting a part of the low-purity refined oil from the container, a second sub-step of mixing the partially collected low-purity refined oil and a cleaning solution to make a mixture, and 2 in the container. A third sub-step of adding the mixed solution to the low-purity refined oil being stirred is performed, and a mixing device is used to uniformly mix the low-purity refined oil and the washing liquid partially collected in the second sub-step, and the mixing device, A first having a phase-free conversion head that converts and sprays partially collected low-purity refined oil into an ultra-fine free liquid, and a delivery fan that delivers the free liquid formed at a lower speed while spraying from the free-of-charge conversion head. Conversion member; The distal end is in communication with the first conversion member to receive the free liquid sent from the first conversion member, and the inner diameter is gradually reduced and then widened to the original state, and a protrusion forming a narrow flow path at the middle point is provided to form an ultrafine particle being transferred. A mixing guide pipe that allows the free liquid and the cleaning liquid to contact at an increased speed in the narrowed flow path; The cleaning liquid supplied to the flow path of the mixing guide pipe narrowly formed by the protrusion while the end of the mixing guide pipe is located on the center line of the mixing guide pipe while it is connected to the cleaning liquid tank to receive the cleaning liquid and penetrates the front end wall of the mixing guide pipe. A cleaning liquid nozzle for spraying; And mixing provided in the front end of the mixing guide pipe to deliver the free liquid delivered from the delivery fan of the first conversion member in the form of a whirlwind so that smooth mixing with the cleaning liquid supplied to the inside of the mixing guide pipe can be achieved. It may be characterized by consisting of a fan;

In addition, the mixing device includes an inner pipe that is connected to a washing liquid tank to receive a washing liquid and then discharges it to the mixing induction pipe, an outer pipe that surrounds the inner pipe to keep warm, and a seal along the central axis of the inner pipe from the inside of the inner pipe. A heating rod formed in a long shape and built-in a heater to heat the cleaning liquid passing through the inside of the inner tube, and a heating rod formed in a spiral shape along the outer circumferential surface of the heating rod and heated by guiding the cleaning solution to pass through the inside of the inner tube in a spiral shape. It may be characterized in that it further comprises a heating member made of a heating pin to increase the cleaning solution to a temperature of 45 ~ 58 ℃ similar to the low-purity refined oil to be mixed.

On the other hand, the eco-friendly alcohol fuel of the present invention is manufactured by the above-described eco-friendly alcohol fuel manufacturing method and characterized in its technical configuration.

The eco-friendly alcohol fuel manufacturing method according to the present invention contains high purity refined oil produced using waste cooking oil in a high content, so that it is eco-friendly, has no soot, and has high calorific value, so that an eco-friendly alcohol fuel having excellent ignition performance can be produced.

In addition, the present invention is suitable for manufacturing a gel-type or solid fuel that is environmentally friendly and has high calorific value and has excellent ignition performance.

1 is a flow chart for explaining an eco-friendly alcohol fuel manufacturing method according to an embodiment of the present invention
2 is a perspective view of a mixing device for producing a cleaning solution used in an eco-friendly alcohol fuel manufacturing method according to an embodiment of the present invention
3 is a longitudinal cross-sectional view for explaining the configuration of a mixing device for producing a cleaning solution used in an eco-friendly alcohol fuel manufacturing method according to an embodiment of the present invention
4 and 5 are a series of reference diagrams for explaining the operation and operation of a mixing device for manufacturing a cleaning liquid used in an eco-friendly alcohol fuel manufacturing method according to an embodiment of the present invention.

With reference to the accompanying drawings will be described in detail with respect to the environment-friendly alcohol fuel manufacturing method according to embodiments of the present invention. Since the present invention can apply various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, and it should be understood that all changes, equivalents, and substitutes included in the spirit and scope of the present invention are included. In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, dimensions of structures are shown to be enlarged than actual for clarity of the present invention, or reduced than actual to understand a schematic configuration.

Further, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

<Example>

1 is a flow chart illustrating a method for manufacturing high purity refined oil from waste cooking oil in an eco-friendly alcohol fuel manufacturing method according to an embodiment of the present invention.

As shown, the eco-friendly alcohol fuel manufacturing method according to an embodiment of the present invention includes a waste cooking oil residue separation step (S110), a waste cooking oil primary stirring step (S120), a low-purity refined oil formation step (S130), a low-purity refined oil 2 It comprises a secondary stirring step (S140), medium-purity refined oil forming step (S150), high-purity refined oil forming step (S160), high-purity refined oil and alcohol mixing step (S170), alcohol fuel coagulation step (S180).

In the present invention, by performing the above steps, it is possible to manufacture alcohol fuel having excellent ignition performance without soot, eco-friendly, and high calorific value by using waste cooking oil.

Hereinafter, a method of manufacturing an eco-friendly alcohol fuel according to an embodiment of the present invention will be described in detail, centering on the above steps.

In the waste cooking oil residue separation step (S110), the waste cooking oil collected from each place is filtered through a strainer to separate the waste. This makes it possible to remove most of the solid particulate debris.

In the waste cooking oil first stirring step (S120), the waste cooking oil from which the residue was separated in the previous step is put in a container for stirring, and the first stirring is performed while maintaining a temperature of 45 to 58°C.

In the low-purity refined oil forming step (S130), the glycerin contained in the waste cooking oil is removed while the waste cooking oil is first stirred to form a low-purity refined oil. To this end, methanol and sodium hydroxide are put in a container at a weight ratio of 36:1, and a catalyst mixed with stirring at 300rpm for 15 minutes is added to the waste cooking oil under primary stirring. When allowed to stand for 40 minutes after stirring, glycerin contained in waste cooking oil is precipitated to the bottom of the container due to the action of the catalyst. The deposited glycerin is removed after extraction by opening the extraction port formed at the bottom of the container. This gives a low-purity refined oil from which glycerin has been removed.

In the second stirring of the low-purity refined oil (S140), the low-purity refined oil obtained in the previous step is secondarily stirred while maintaining a temperature of 45 to 58°C. The second stirring temperature is not very different from the first stirring temperature, but it can be slightly different in consideration of the state in which glycerin has been removed.

In the medium-purity refined oil forming step (S150), the low-purity refined oil is secondarily stirred to remove impurities contained in the low-purity refined oil, thereby forming the medium-purity refined oil. To this end, a washing solution obtained by mixing water and glacial acetic acid or acetic acid in a ratio of 100:0.4 is mixed with low-purity purified oil under secondary stirring, and stirred for about 20 minutes. If left to stand for 1 hour or more after stirring, impurities are aggregated with water to the bottom by the action of the glacial acetic acid or the washing solution, so that they can be easily removed. The refined oil impurities collected in this way are removed. In this way, after removing impurities using a washing solution, the washing process of removing the used washing solution is repeated 2-3 times until the impurities are no longer agglomerated to obtain medium-purity refined oil.

In the formation of medium-purity refined oil, the key is how smoothly the cleaning solution can be mixed with low-purity refined oil for effective cleaning of impurities. However, in the case of a cleaning liquid containing water, it is not easily mixed with low-purity refined oil, so if the cleaning liquid is directly mixed with the low-purity refined oil being stirred in a container, it cannot be quickly dispersed in the low-purity refined oil, so it cannot effectively act on impurities. There is a problem. To compensate for this, instead of mixing the cleaning solution directly into the low-purity refined oil contained in the container, a part of the low-purity refined oil is collected from the container, and then re-injected while uniformly mixing it with the cleaning solution. At this time, an independent mixing device is used to uniformly mix the collected low-purity refined oil and the cleaning liquid.Refer to Figs. 2 to 5 for a mixing device and a mixing method for uniformly mixing the collected low-purity refined oil and cleaning liquid. It will be described in detail.

In the high-purity refined oil forming step (S160), the medium-purity refined oil is third stirred at a temperature of 75 to 88°C, which is a higher temperature than the first and second stirring. Thereby, the metalol contained in the medium-purity refined oil can be evaporated and a clear and transparent high-purity refined oil can be made. It is appropriate to repeat such a third stirring twice.

In the high-purity refined oil and alcohol mixing step (S170), the high-purity refined oil dried in the previous step and methyl alcohol are mixed. When mixing such high-purity refined oil and methyl alcohol, alcohol is mixed in an amount of 70% by weight or more and less than 80% by weight of the total 100% by weight, and the remainder is mixed with high-purity refined oil and water. At this time, the mixing ratio of high-purity refined oil and water is appropriate to make them almost equal to 1:0.75~1.25. If methyl alcohol is more than 85% by weight of the total weight, it is classified as a hazardous substance for accidents according to Article 39 of the Chemical Substances Control Act because of strong acute toxicity and explosiveness. Even if it is more than 80% by weight, it is not safe due to toxicity and has a meaning as a renewable fuel. It is lowered, and if it is less than 70% by weight, there is a fear that the ignition performance is deteriorated. On the other hand, if more than 20% by weight of the rest excluding methyl alcohol is mixed with high-purity refined oil prepared through the previous steps and water, compared to the case where only methyl alcohol and water were used, the calorific value was increased while there was no soot, and the ignition performance was naturally improved. You will experience a significant change in becoming.

In other words, as shown in Table 1 below, when a generally distributed solid fuel (gel fuel) is mixed with methyl alcohol, water, and a thickener at a weight ratio of 86:13:1, the calorific value is about 4,600 kcal/kg. When alcohol, high purity refined oil (prepared by the above method), water, and thickener were mixed at a weight ratio of 78:10:11:1, the calorific value was about 5,800 kcal/kg, showing a higher calorific value. Accordingly, the ignition performance was improved, and the result was obtained that even soot disappeared. This result is acute toxicity when mixed with methyl alcohol of 85% or more according to the Ministry of Environment's Chemical Substance Control Act. It has been designated as an accident-preparing material due to its strong explosiveness, and it is very encouraging considering that the use of methyl alcohol is more than 85% in the case of solid fuels commonly used in commercial companies and there are restrictions on distribution and storage as it is an accident-preparing material. Can be said. This result is that the fuel according to the embodiment of the present invention has a methyl alcohol content of less than 80%, and high purity refined oil is classified as a non-heatable material, so distribution and storage are relatively free, and it is very suitable for mass production of eco-friendly products. Can be seen.

Fuel type Methyl alcohol: high purity refined oil: water: thickener
78:10:11:1 Methyl alcohol: water: thickener
86:13:1 Foot calories 5,800kcal/kg 4,600kcal/kg

In the alcohol fuel coagulation step (S180), when mixing high-purity refined oil and methyl alcohol, a thickener that increases viscosity is additionally mixed and heated to prepare an alcohol fuel coagulated in a gel or solid form. The alcohol fuel coagulation step (S180) may be selectively performed when a gel-type or solid-type alcohol fuel is required.

As such, it is possible to manufacture an eco-friendly alcohol fuel having excellent ignition performance due to high soot-free, eco-friendly, and high calorific value while using waste cooking oil through each of the steps described above.

In the following, a mixing device for making a mixed solution by uniformly mixing a low-purity purified oil and a cleaning solution partially collected from a container during the process of making medium-purity refined oil and a method of making a mixed solution using the same will be described.

The mixing device includes a mixing guide pipe 10, a cleaning liquid nozzle 20, a first conversion member 30, a second conversion member 40, and a heating member 50, as shown in FIGS. 2 and 3 It is done by doing.

The mixing induction pipe 10 serves to first mix while strongly contacting and mixing by receiving a superfine liquid, which is a low-purity refined oil, and a washing liquid, which are ultra-fine particles of the first conversion member 30 together. To this end, the mixing induction pipe 10 communicates with the first conversion member 30 to receive a free liquid of low-purity refined oil delivered from the first conversion member 30, and the cleaning liquid tank and It is connected to receive a cleaning liquid from the cleaning liquid nozzle 20. A protrusion 11 is provided inside the body having a pipe shape to form a narrow venturi tube-shaped flow path at an intermediate point while gradually reducing the inner diameter and then expanding it to its original state. As can be seen in FIG. 4, the protrusion 11 induces the free liquid of low-purity refined oil and the cleaning liquid to make strong contact with each other while flowing at an increased speed in the relatively narrow flow path 10a by the Venturi effect. In addition, chambers 11a and 11b that are connected to the cleaning liquid tank through the first supply pipe 62 of the three-way valve 60 to receive and temporarily store the cleaning liquid are formed inside the protrusion 11, and the protrusion 11 A plurality of first injection holes 11c are formed along the circumferential direction of the inner circumferential surface to receive and spray cleaning liquid from the chambers 11a and 11b on the inner circumferential surface of the intermediate point corresponding to the narrowly formed point, and the protrusion 11 ), a plurality of second injection holes 11d for receiving and spraying the cleaning liquid from the chambers 11a and 11b are formed along the circumferential direction of the rear end. As a result, it is possible to simultaneously supply the cleaning liquid at various points as well as the cleaning liquid nozzle 20, so that it is possible to more effectively contact the free liquid. In particular, the rear end of the protrusion 11, whereas the cleaning liquid sprayed through the first injection hole 11c formed at the midpoint of the protrusion 11 can violently contact the low-purity purified oil free liquid flowing at the fastest speed. The cleaning liquid sprayed through the second injection hole 11d formed at the point was made to calmly contact the free liquid flowing at a relatively slow speed. By such a composition in which diversity coexists, the effect of mixing and contacting the free liquid of low-purity refined oil and the cleaning liquid can be enhanced, and the resulting mixing quality can be raised to a high level.

In addition, a mixing fan 12 that delivers a free liquid of low-purity refined oil delivered from the delivery fan 32 of the first conversion member 30 in the form of a whirlwind as shown in FIG. 5 inside the front end of the mixing induction pipe 10. ) Is further provided. When the mixing fan 12 is provided and operated, as shown in FIG. 4, the flow rate of the free liquid and the cleaning liquid is rapidly formed by the Venturi effect, and strong contact with each other is achieved. In the form of this powerful whirlwind, the complex action takes place in mixing with the cleaning liquid. Therefore, contact and mixing between the supernatant liquid, which is a low-purity purified oil in the form of ultrafine particles, and the washing liquid occurs very quickly and effectively. For reference, it is sufficient to provide the mixing fan 12 of the same type as the fan used in an air circulator recently used in homes.

The cleaning liquid nozzle 20 serves to supply the cleaning liquid in the mixing guide pipe 10 in accordance with the flow direction of the free liquid. To this end, the cleaning liquid nozzle 20 is connected to the cleaning liquid tank through the second supply pipe 63 of the three-way valve 60 to receive the liquid cleaning liquid, and the end of the cleaning liquid nozzle 20 passes through the wall of the front end of the mixing guide pipe 10. It is positioned on the center line of the mixing induction pipe 10 and is formed to face a passage narrowly formed by the protrusion 11. Here, as shown in FIG. 3, the cleaning liquid nozzle 20 includes a first nozzle part 21 formed from the wall of the mixing guide pipe 10 to the center line, and the mixing guide pipe 10 from the first nozzle part 21. It consists of a second nozzle part 22 extending along the center line of and having its end formed close to the narrow flow path 10a by the protruding part 11. The cleaning liquid nozzle 20 helps to accelerate the flow rate of the free liquid while spraying the cleaning liquid in the vicinity of the narrow flow path 10a by the protrusion 11 in the flow direction of the free liquid of low-purity refined oil. This contributes to the contact between the free liquid of the low-purity refined oil and the cleaning liquid at a faster speed in the narrow flow path 10a in the middle of the protrusion 11 of the mixing induction pipe 10.

The first conversion member 30 serves to convert the low-purity refined oil supplied through the transfer pipe P1 into a free form of ultrafine particles. To this end, the first conversion member 30 has a body in the form of a pipe that is provided with a flange and communicates in the middle of the transfer pipe P1 and the mixing induction pipe 10. It includes a phase-free conversion head 31 for converting and spraying purified purified oil into a phase-free liquid. Such a phase-free conversion head 31 may be used as it is a phase-free conversion head 31 (nozzle) applied to the water spray fire extinguishing equipment, but it is preferable to apply it by improving the material with enhanced corrosion resistance and durability. In this way, if the low-purity refined oil supplied from the transfer pipe (P1) is converted into a superfine liquid in the form of ultra-fine particles without using it as it is, it is possible to secure a wide contact area that can be in contact with the sprayed cleaning liquid. It is very important in that it can be mixed.

In addition, a delivery fan 32 is provided inside the first conversion member 30 for discharging a free liquid having a low speed while being sprayed from the free conversion head 31 at a higher speed. In the case of the mixing fan 12, if it has a specialized function to push and deliver the free liquid, the delivery fan 32 overcomes the resistance caused by the installation of the free conversion head 31 and draws the free liquid generated in a state of lowering the speed. It can be said that it is suitable for sending out to the sending fan 32. In the present invention, the delivery fan 32 and the mixing fan 12 are arranged in series in the vicinity, thereby maximizing the advantages between the two.

The second conversion member 40 is supplied with a mixture of low-purity refined oil and a cleaning solution, which is first mixed while passing through the mixing induction pipe 10, and makes the mixture in the form of water droplets, while mixing quality between each other. It plays a role in maximizing. To this end, the second conversion member 40 is connected to the rear end of the mixing induction pipe 10 by a pipe-shaped body to receive a mixed liquid in which the free liquid and the washing liquid are mixed through the mixing induction pipe 10. , In the interior, a plurality of grills 41, 42, 43, in which a plurality of micropores are formed in a form of blocking a flow path, are arranged in series with a space apart. According to the drawing, it is shown that three grills 41, 42, and 43 are arranged. According to this configuration, each time the mixed solution passes through the grill layer formed by the grills 41, 42, 43, it is repeatedly contracted and expanded. It is possible to gradually increase the mixing quality of the cleaning solution for low-purity refined oil, and the separation space 44a formed behind the grills 41, 42, 43 whenever the mixed solution passes through each of the grills 41, 42, 43 In 44b and 44c), turbulent flow occurs, and mixing between the low-purity refined oil and the cleaning solution is made more active.

The heating member 50 serves to rapidly heat the cleaning liquid supplied to the mixing guide pipe 10 in the middle. The heating temperature for the cleaning liquid is ultimately aimed at the same temperature as the low-purity refined oil being stirred, but in reality it is sufficient to raise it to a temperature similar to that. To this end, the heating member 50 is provided with an inlet 52a and an outlet 52b to receive the washing liquid from the washing liquid tank and then discharge it to the mixing induction pipe 10 through the inlet pipe 61 of the three-way valve 60. The inner tube 51 is formed long in a rod shape along the central axis of the inner tube 51 from the inside of the inner tube 51 and the outer tube 52 that surrounds the inner tube 51 to keep warm. The heating rod 53 is formed in a spiral shape along the outer circumferential surface of the heating rod 53 to heat the cleaning liquid passing through the inside of the inner tube 51, so that the cleaning solution passes through the inside of the inner tube 51 in a spiral shape. It is provided with a heating pin 54 for heating by contacting while guiding. According to the configuration of the heating member 50, it is possible to quickly increase the temperature of the supplied cleaning liquid, so that the mixing between the free liquid of the low-purity refined oil and the cleaning liquid in the mixing guide pipe 10 can be performed at a similar temperature range.

As such, when the low-purity refined oil collected by the mixing device and the cleaning liquid are uniformly mixed to form a mixed liquid, the mixed liquid is added to the low-purity refined oil under secondary stirring in a container and mixed. Then, the mixed liquid containing the washing liquid is smoothly dispersed in the low-purity refined oil, thereby effectively acting on impurities.

Although the preferred embodiment of the present invention has been described above, the present invention can use various changes, modifications, and equivalents. It is clear that the present invention can be applied equally by appropriately modifying the above embodiments. Therefore, the above description does not limit the scope of the present invention determined by the limits of the following claims.

Claims (8)

Separating the waste by filtering the waste cooking oil collected from each place with a sieve;
Putting the waste cooking oil from which the residue was separated into a container and first stirring at a temperature of 45 to 58°C;
Forming a low-purity refined oil by removing glycerin contained in the waste cooking oil by adding a catalyst in which methanol and sodium hydroxide are stirred and mixed at 300 rpm in a container at a weight ratio of 36:1 while the waste cooking oil is first stirred;
Secondarily stirring the low-purity refined oil at a temperature of 45 to 58°C;
Forming medium-purity refined oil by removing impurities contained in the low-purity refined oil by mixing a washing solution in which water and acetic acid are mixed in a weight ratio of 100:0.4 while secondary stirring the low-purity refined oil;
Drying the medium-purity refined oil while tertiary stirring at a temperature of 75-88° C. higher than during the first and second stirring to form a high-purity refined oil;
Mixing high-purity refined oil and methyl alcohol; to produce alcohol fuel,
When mixing high-purity refined oil and methyl alcohol, in the total 100% by weight of methyl alcohol, 70% by weight or more and less than 80% by weight, and the rest are mixed with high-purity refined oil and water, but mixed with high-purity refined oil and water in a ratio of 1: 0.75 to 1.25 by weight. Eco-friendly alcohol fuel manufacturing method, characterized in that. The method of claim 1,
An eco-friendly alcohol fuel manufacturing method, characterized in that when mixing methyl alcohol, high purity refined oil, and water, a thickener that increases viscosity is further mixed to prepare an alcohol fuel solidified in a gel or solid form. delete The method of claim 1,
When the impurities are removed from the low-purity refined oil, the cleaning solution is removed. The method of claim 4,
An eco-friendly alcohol fuel manufacturing method, characterized in that repeatedly performing the process of removing impurities from the low-purity refined oil. The method of claim 4,
When mixing the cleaning solution with low-purity refined oil, the first sub-step of collecting a part of the low-purity refined oil from the container, the second sub-step of making a mixture by mixing the partially collected low-purity refined oil and the cleaning solution, and the second stirring in the container The third detailed step of adding the mixed solution to the low-purity refined oil is proceeding,
A mixing device is used to uniformly mix the low-purity purified oil partially collected in the second sub-step and the cleaning liquid, and the mixing device,
A first having a phase-free conversion head that converts and sprays partially collected low-purity refined oil into an ultra-fine free liquid, and a delivery fan that delivers the free liquid formed at a lower speed while spraying from the free-of-charge conversion head. Conversion member;
The distal end is in communication with the first conversion member to receive the free liquid sent from the first conversion member, and the inner diameter is gradually reduced and then widened to the original state, and a protrusion forming a narrow flow path at the middle point is provided to form an ultrafine particle being transferred. A mixing guide pipe that allows the free liquid and the cleaning liquid to contact at an increased speed in the narrowed flow path;
The cleaning liquid supplied to the flow path of the mixing guide pipe narrowly formed by the protrusion while the end of the mixing guide pipe is located on the center line of the mixing guide pipe while it is connected to the cleaning liquid tank to receive the cleaning liquid and penetrates the front end wall of the mixing guide pipe. A cleaning liquid nozzle for spraying; And
A mixing fan provided inside the front end of the mixing induction pipe to deliver the free liquid delivered from the delivery fan of the first conversion member in the form of a whirlwind so that smooth mixing with the cleaning liquid supplied into the mixing induction pipe ;
Eco-friendly alcohol fuel manufacturing method, characterized in that consisting of. The method of claim 6,
The mixing device includes an inner pipe connected to a washing liquid tank to receive a washing liquid and then discharged to the mixing guide pipe, an outer pipe that surrounds the inner pipe and keeps warm, and a rod shape along the central axis of the inner pipe from the inside of the inner pipe. A heating rod that is formed long and has a built-in heater to heat the cleaning liquid passing through the inside of the inner tube, and a heating rod formed in a spiral shape along the outer circumferential surface of the heating rod to guide and heat the cleaning solution so as to pass through the inside of the inner tube in a spiral shape. Further comprising a heating member made of a pin,
An eco-friendly alcohol fuel manufacturing method, characterized in that the cleaning solution is raised to a temperature of 45 to 58°C similar to that of low-purity refined oil to be mixed. delete

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