KR20080105885A - Apparatus for processing liquid fuel mixed by coal, oil and water, method of processing mixed liquid fuel and mixed liquid fuel thereof - Google Patents

Abstract

An apparatus for manufacturing coal-mixed liquid fuel is provided to pulverize coal such as anthracite coal and bituminous coal, to refine waste oil like plant oil and mix crushed stone coal, refinement waste oil and water and to prevent dust from being generated when the coal is carried. An apparatus for manufacturing coal-mixed liquid fuel contains a coal feeder(110) in which coal raw ore is stored and which supplies the coal raw ore, pulverizing devices(130, 140) pulverizing the coal raw ore to a microparticle size, a first mixer(160) desulfurizing and decalcifying crushing stone coal by mixing water and a coagulant into crushed stone coal supplied to a coal depositing storage(150) at 30 ~ 40% of concentration, a waste oil feeder(210) in which waste oil is stored and supplies the waste oil, an esterification reaction bath(230) which esterification-reacts the waste oil from which the moisture is removed, a second mixer(310) which mixes the water and the oil to a proper weight ratio into the crushing stone coal supplied through a coal measure(190) and refinement waste oil supplied through a waste oil meter(290) and a sonicator(320) giving supersonic vibration to a mixture mixed in the second mixer.

Description

Apparatus for processing liquid fuel mixed by coal, oil and water, method of processing mixed liquid fuel and mixed liquid fuel

1 is a block diagram showing an apparatus for producing coal mixed liquid fuel according to the present invention.

Figure 2 is a flow chart illustrating a method for producing coal mixed liquid fuel according to the present invention.

Figure 3 is a flow chart showing the process of coal in the coal mixed liquid fuel production method according to the present invention.

Figure 4 is a flow chart showing the treatment of waste oil in the coal mixed liquid fuel production method according to the present invention.

5 is a flowchart illustrating a stirring process of pulverized coal and refined waste oil in a coal mixed liquid fuel production method according to the present invention.

** Description of the symbols for the main parts of the drawings **

100: pulverized coal manufacturing unit

200: refined waste oil manufacturing unit

300: coal liquid processing unit

The present invention relates to a coal mixed liquid fuel manufacturing apparatus, a method of manufacturing a coal mixed liquid fuel using the same, and a coal mixed liquid fuel produced by the same, and more particularly, a coal mixed liquid fuel mixing a predetermined ratio of coal, waste oil and water. It relates to a manufacturing apparatus, a method for producing a coal mixed liquid fuel using the same, and a coal mixed liquid fuel produced thereby.

In general, coal is cheaper than oil, which has a limited distribution area and reserves, and has a long depreciation year and is widely distributed throughout the world. However, compared to petroleum, coal has disadvantages of storage, transportation, combustion inconveniences and environmental pollution problems, and requires extensive equipment for transportation.

Therefore, the use of coal in the transportation sector may not be suitable for use due to these problems. However, the situation is different in the case of industrial and power plants except transportation. The most problematic problem in coal use in these fields is environmental problem. Recently, environmental technology has developed so rapidly that there is no difference between the exhaust gas treatment during coal combustion and the exhaust gas treatment during petroleum combustion. Reached.

However, coal is still a solid fuel, which is inconvenient compared to petroleum in transportation and storage. Accordingly, a technology for liquefying coal and using it as a liquefied fuel such as petroleum was developed. As a prior art, Korean Patent Publication No. 1989-0010169 discloses a mixed liquid fuel of coal, water and oil and a method of manufacturing the same. In the published patent, coal, water, and hydrocarbon-based oil are mixed to produce a liquid coal fuel.

However, even if the coal is produced as a liquid fuel as described in the above-described patent, the problem of ashing remaining during the combustion of coal remains a troublesome problem. In addition, since coal contains 0.3 to 7% of sulfur, there is a problem that a high performance exhaust gas treatment device must be performed.

The present invention has been made to solve the above problems, pulverized coal such as anthracite coal or bituminous coal, and refined waste oil such as vegetable oil (edible oil, waste edible oil, soybean oil, etc.) It is an object of the present invention to provide a coal mixed liquid fuel manufacturing apparatus for mixing, a method for producing a coal mixed liquid fuel using the same and a coal mixed liquid fuel produced thereby.

Coal mixed liquid fuel production apparatus according to the present invention for achieving the above object is a coal supplier in which the coal raw material is stored and supplied, the dryer drying the coal raw material supplied from the coal feeder, the coal dried in the dryer A grinder for crushing the raw stone to a micro-particle size, a coal collecting reservoir for storing the crushed coal pulverized in the crusher, agitated the mineral liquid mixed with 30% to 40% concentration of water and flocculant in the pulverized coal supplied from the coal collection reservoir A first stirrer for desulfurizing and deliming the pulverized coal, a pulverized coal reservoir to which the pulverized coal stirred in the first stirrer is transferred and stored, and a coal meter for controlling the supply of the pulverized coal supplied from the pulverized coal reservoir And a waste oil supplier, in which waste oil is stored and supplied, the waste oil supplied from the waste oil supplier A water remover for removing water contained in waste oil, an esterification reaction tank for esterifying the waste oil from which water is removed from the water remover, a refined waste oil storage tank in which the esterified refined waste oil is transferred and stored in the esterification reaction tank, and A waste oil meter for controlling the supply of the refined waste oil supplied from the refined waste oil storage tank, wherein water and oil are added to the pulverized coal supplied through the coal meter and the refined waste oil supplied through the waste oil meter in a predetermined weight ratio. A second stirrer to be mixed and stirred and an ultrasonic processor for applying ultrasonic vibration to the mixture stirred in the second stirrer are provided.

And further comprising a purifier for separating and storing the gangue material separated from the first stirrer, and for purifying and refining the flocculant separated from the sedimentation bin in the sedimentation bin. The purified flocculant is fed to the second stirrer.

The pulverizer is a first crusher to crush the coal ore to a particle size of about 0.3 ~ 0.8mm, and a second pulverizing coal ore crushed by the first crusher to a particle size of about 3 ~ 8㎛ A grinder is provided.

Coal mixed liquid fuel production method according to the present invention for achieving the above object, the coal processing step of supplying a predetermined amount of pulverized coal by pulverizing coal in a micro-particle state, desulfurized, deliming the pulverized pulverized coal, Waste oil treatment step of removing the water contained in the water, and the waste oil from which the water is removed by giving an [OH] group through an esterification reaction to supply a predetermined amount of refined waste oil, stirring the pulverized coal and the refined waste oil, and ultrasonic treatment Stabilizing through to produce a coal-mixed liquid fuel includes a coal-mixed liquid fuel manufacturing step.

In the coal treatment step, the first grinding step of grinding the supplied coal ore to a particle size of about 0.3 ~ 0.8mm, the pulverized coal ore is pulverized into a micro particle size of about 3 ~ 8㎛ The second grinding step to form, and the pulverized pulverized coal comprising a stirring step of further desulfurization and deliming treatment by further stirring water and flocculant.

The waste oil treatment step includes a water removal step of removing water contained in the supplied waste oil, and an esterification reaction step of giving an [OH] group by treating the waste oil from which water is removed with an esterification reaction.

In the coal-mixed liquid fuel manufacturing step, the mixture is stirred by mixing 30 to 50 weight ratio of the pulverized coal, 10 to 30 weight ratio of the waste oil, 5 to 15 weight ratio of water, and 20 to 40 weight ratio of oil, and then irradiating ultrasonic waves at a predetermined frequency. do.

Coal mixed liquid fuel according to the present invention for achieving the above object is 30 to 50 weight ratio of demineralized coal extracted by agitating the pulverized coal and water and the mineral liquid added with a flocculant to a particle size of 3 ~ 8㎛ , By mixing 5 to 15 weight ratio of water, 20 to 40 weight ratio of oil and 10 to 30 weight ratio of the waste oil containing the [OH] group by the esthalation reaction, and then obtained by irradiating ultrasonic waves of a predetermined frequency.

The flocculant is any one selected from kerosene, diesel oil, BC oil and DMU-101.

Hereinafter, with reference to the accompanying drawings will be described in detail a coal mixed liquid fuel production apparatus, a coal mixed liquid fuel production method using the same and the coal mixed liquid fuel produced thereby.

In the following description of the present invention, the terms defined are defined in consideration of functions in the present invention, and should not be understood as a meaning of limiting the technical components of the present invention.

1 is a block diagram showing an apparatus for producing coal mixed liquid fuel according to the present invention.

As shown in the coal mixed liquid fuel manufacturing apparatus according to the present invention, the coal-pulverized coal manufacturing unit 100 for drying the coal and grinding in the state of microparticles, and to produce pulverized coal through the desulfurization and deliming treatment, and the water of the waste oil Purified waste oil refined by removing the purified and the refined waste oil to produce the refined waste oil 200, and the pulverized coal and refined waste oil manufacturing unit 200 manufactured in the pulverized coal manufacturing unit 100 It is provided with a coal liquid processing unit 300 to stir the refined waste oil and to stabilize and mix by sonication.

The pulverized coal manufacturing unit 100 includes a coal feeder 110, a dryer 120, a first mill, a second mill, a coal collecting storage 150, and a first stirrer 160.

Coal feeder 110 is stored in the supply of coal ore, the coal ore of anthracite or bituminous coal is stored, a hopper for injecting the coal ore from the outside, and a conveyor for transporting the stored coal ore to the outside A belt may be further provided.

Dryer 120 is to remove the water contained in the coal ore, by removing the water contained in the coal ore to improve the grinding efficiency during the grinding process in the first and second mills 130, 140, the first stirrer Improve the reactivity to the flocculant added at 160.

The first crusher 130 is for crushing the coal dried in the dryer 120 to a particle size of 0.3 ~ 0.8mm, jaw crasher, roll crasher or roll mill It may be provided with a grinder such as. Coal ore is first pulverized by the first crusher 130.

The second grinder 140 is for crushing coal pulverized in the first grinder 130 into particles having a micro size (about 3 to 8 μm), and an air classifier mill and an air jet mill. mill), such as a mill. Coal is secondaryly crushed by the second mill 140. The second crusher 140 may be further provided with a separate dustproof equipment for removing dust generated when the coal is crushed.

The coal collecting storage 150 is for storing coal pulverized in micro units in the second mill 140 and pulverizing particles of coal pulverized in micro units in the second mill 140 through airflow stabilization. Save coal The coal collecting storage 150 may be further provided with a separate dustproof equipment for removing dust generated when the coal is collected, and in the case of the dustproof equipment may be installed to recover the coal in the dust state back to the coal storage. .

The first stirrer 160 is used to perform desulfurization and deliming of pulverized coal. The pulverized coal, water and oil-based coagulant provided separately from the finely pulverized coal and pulverized coal are introduced, and the pulverized coal, water and Desulfurization and deliming of coal are performed by stirring the mineral liquid mixed with oil.

Here, the concentration of crushed coal in the mixed mineral liquid is 30 to 35%. And the stirring condition of the first stirrer 160 is first put water to 1,000rpm ~ 2,000rpm, suitably stirred for 3 to 5 minutes at a stirring speed of about 1,500rpm, and then added a flocculant 1,000rpm ~ 2,000rpm For 3 to 5 minutes at an agitation speed of about 1,500 rpm, suitably, the coal is demineralized after being left to stand for 10 to 15 minutes for separation of coal particles and gangue. Perform separation of gangue. The demineralized coal separated from the gangue can also be washed again to further remove residual gangue.

Thus, desulfurization and deliming of coal are performed by stirring by the first stirrer 160. In other words, the finely divided coal particles are agglomerated into floc with weak cohesive force due to stirring with water and a flocculant, thereby making the surface of coal particles more hydrophobic.

Accordingly, by allowing coal particles and water to generate a large repulsive force, coal particles and coal can be separated by collecting only coal particles that are aggregated to the upper end of the mineral liquid.

 Here, the oil-based flocculant used may be selected by using kerosene, diesel oil, B-C oil, "DMU-101" which is a collector developed by the Korea Institute of Resources.

In addition, the separation of the gangue water and the demineralized coal may be separated by installing a separate discharge valve (not shown) at the bottom of the first stirrer 160. That is, the demineralized pulverized coal floats on the upper part of the first stirrer 160, and the gangue water is settled on the lower part. Therefore, gangue water can be separated by controlling the discharge valve.

Meanwhile, the demineralized crushed coal is transferred to the crushed coal storage 180 and temporarily stored. When transported to the pulverized coal storage 180 may be transported by an automatic transport device such as an auger (auger) mounted inside the cylindrical case.

In addition, a coal meter 190 for controlling a supply amount of the pulverized coal temporarily stored in the pulverized coal storage 180 is provided below the pulverized coal storage 180. By the coal meter 190, the pulverized coal stored in the pulverized coal storage 180 is supplied to the second stirrer 310 of the coal liquid processing unit 300 which will be described later.

The refined waste oil manufacturing unit 200 includes a waste oil supply unit 210, a water remover 220, an esterification reaction tank 230, a refined waste oil storage tank 280, and a waste oil meter 290.

The waste oil supplier 210 further includes a supply line through which waste oil is stored and supplied, and supplies waste oil. Here, the waste oil may be used waste oil and waste cooking oil discharged from various industrial facilities and homes.

Here, the waste cooking oil is the final sludge type oil from the yumtang noodle factory, the sludge type oil from the production of cooking oil, the sludge type oil from the soap factory, sludge type from various fried or fried chicken Waste cooking oil and the like.

 In this case, the waste oil may include engine waste oil, gear oil waste oil, crude oil sludge waste oil, etc. discharged from various vehicles and ships. Such waste oil is used by removing impurities by pretreatment, and using impurities, for example, by using a filter press.

The water remover 220 is for removing water contained in the waste oil, and heats the supplied waste oil to about 80 to 100 ° C., and rotates it at 50 to 80 rpm for about 10 to 30 minutes to remove the moisture.

The esterification reactor (230) is to give [OH] to the waste oil from which water is removed to lower the flash point of the pulverized coal to be mixed. The waste oil is 20-80% of methyl alcohol (CH ₃ OH) or ethyl alcohol ( 5-10% of an alkaline supporting agent such as C ₂ H ₅ OH) is added and mixed for 10-30 minutes at 50 ° C. or less with a mixing rotor blade of 40-60 rpm to prepare a refined waste oil which has become an esterification reactant. At this time, if the amount of waste oil is large to prepare the waste oil by heating to 30 ℃ -100 ℃.

The waste oil esterified by the esterification reactor 230 lowers the flash point of coal and increases fluidity, and thus has good mobility even at a temperature of 50 ° C. lower than 60 ° C. of BC-oil.

The refined waste oil storage tank 280 stores the waste oil esterified in the esterification reaction tank 230. The refined waste oil storage tank 280 is provided with a waste oil meter 290 for controlling a supply amount of the refined waste oil temporarily stored in the refined waste oil storage tank 280. The waste oil stored in the refined waste oil storage tank 280 is supplied to the second stirrer 310 of the coal liquid processing unit 300 to be described later by the waste oil meter 290.

The coal liquid processing unit 300 is to manufacture coal mixed liquid fuel by mixing the pulverized coal supplied from the pulverized coal manufacturing unit 100 and the refined waste oil supplied from the refined waste oil manufacturing unit 200, and A second fuel stirrer 310 for mixing the refined waste oil and a mixed fuel storage 340 for storing the coal-mixed liquid fuel mixed in the second stirrer 310.

Wherein the second stirrer 310, the pulverized coal supplied through the coal meter of the pulverized coal manufacturing unit 100 and the refined waste oil supplied through the waste oil meter 290 of the refined waste oil manufacturing unit 200 in a predetermined ratio. To stir and mix.

The second stirrer 310 is supplied with water and oil in addition to the pulverized coal and refined waste oil in order to produce a coal mixed liquid fuel, and is supplied at a rotational speed of 50 to 70 rpm at a relatively low speed as compared to the first stirrer 160 described above. The pulverized coal, refined waste oil and water are stirred and converted into a liquid phase.

The second stirrer 310 includes an ultrasonic processor 320 that provides ultrasonic vibration of 10,000 to 20,000 Hz in order to remove the surface tension inherent in coal particles and water and maintain an equilibrium. The mixed state of the pulverized coal and the refined waste oil is stabilized by the vibration provided in 320.

At this time, the mixture is mixed with 30 to 60 weight ratio of crushed coal, 10 to 30 weight ratio of refined waste oil, 5 to 15 weight ratio of water, and 20 to 40 weight ratio of oil. In this case, the oil used may be bunker-C oil, or diesel and kerosene may also be used.

The mixed fuel reservoir 340 is a slurry of coal mixed liquid fuel to be stored at an appropriate level by the second stirrer 310, and has a separate transfer pipe (not shown) in communication with the second stirrer 310. A filter (not shown) for purifying the coal mixed liquid fuel to be transported may be further provided in the transport pipe.

Meanwhile. The oil supplied to the second stirrer 310 may reuse the oil flocculant used in the first stirrer 160. To this end, the first stirrer 160 may be connected to the precipitation recovery 170 to recover the separated wort. In the sedimentation recovery 170, the demineralized component sinks by storing the pulverized water for a predetermined time, and the oil and water components are suspended thereon. Therefore, after extracting the oil component suspended in the upper portion may remove the floating foreign matter from the extracted oil component may be to be supplied to the second stirrer (310).

Accordingly, the operation of the coal-mixed liquid fuel production apparatus according to the present invention will be described in detail through the embodiment. Each of the elements mentioned below should be understood with reference to the above description and FIG. 1.

Figure 2 is a flow chart illustrating a method for producing coal mixed liquid fuel according to the present invention.

First, prior to explaining the coal-mixed liquid fuel manufacturing apparatus according to the present invention, the pulverization process of coal and the purification process of waste oil can be made at the same time. In the present invention, for the convenience of explanation, the process of pulverizing coal will be described first, and the process of purifying waste oil will be described later. However, this does not limit the progress of the present invention.

As shown in FIG. 2, the coal mixed liquid fuel manufacturing apparatus according to the present invention dries coal stored in the coal feeder 110, pulverizes the dried coal into a predetermined particle state, and collects the pulverized coal to collect water and oil. Agitated using a flocculant to produce pulverized coal (step S100).

Here, the coal grinding process will be described in detail with reference to FIG. 3. Figure 3 is a flow chart showing the process of coal in the coal mixed liquid fuel production method according to the present invention.

First, start supplying the coal stored in the crushed coal storage 180 in a predetermined amount (step S110). Since the supplied coal passes through the dryer 120, the moisture contained in the coal is removed (step S120). As such, the water contained in the coal ore may be removed, thereby improving its efficiency in the subsequent grinding process, and the reactivity of the water and the flocculant added during the stirring process may be increased.

Accordingly, the coal from which the moisture is removed from the dryer 120 is pulverized by the first mill 130 and the second mill 140 (step S130). At this time, the first grinding machine 130 is pulverized to a particle size of about 0.3 ~ 0.8mm, it is preferable to be crushed to a particle size of 0.5mm or less. In addition, the coal particles pulverized in the first crusher 130 are pulverized into particles having a micro size of about 3 to 8 μm by the second crusher 140, and are preferably pulverized to a particle size of 5 μm or less.

Thereafter, the coal particles pulverized into micro-sized particles by the first and second mills 130 and 140 are collected and stored in the coal collecting storage 150 (step S140). The coal collecting storage 150 stores the coal crushed by dropping the particles of coal pulverized in the second mill 140 through airflow stabilization.

Thereafter, the pulverized coal stored in the coal collection storage 150 is moved to the first stirrer 160 to perform the desulfurization and deliming process of the pulverized coal (step S150). At this time, water and an oil-based flocculant are added and stirred separately from the crushed coal.

At this time, the stirring conditions are first put water to 1,000rpm ~ 2,000rpm, suitably stirred for 3 to 5 minutes at a stirring speed of about 1,500rpm, and again by adding a flocculant 1,000rpm ~ 2,000rpm, suitably around 1,500rpm Stir for 3 to 5 minutes at a stirring speed of.

In addition, it is also possible to perform a separation process of coal particles and gangue (脈 石 物). The gangue separation process is left for about 10 to 15 minutes after the desulfurization and deliming process to perform gangue separation.

The desulfurized and delimed crushed coal is transferred to the pulverized coal storage 180 and temporarily stored (step S160). Then, the crushed coal temporarily stored in the pulverized coal storage 180 is supplied to the second stirrer 310 of the coal liquid processing unit 300 by the coal meter 190.

Meanwhile, as described above, the process of refining the waste oil proceeds at the same time (or sequentially) as in the manufacturing process of the pulverized coal. The purification process of the waste oil is to remove the water contained in the waste oil to be supplied and to give a [OH] group through the esterification reaction to remove the waste oil to reduce the flash point (step S200).

Here, the purification process of the waste oil will be described in detail with reference to FIG. 4. Figure 4 is a flow chart showing the treatment of waste oil in the coal mixed liquid fuel production method according to the present invention.

First, a certain amount of waste oil stored in the waste oil reservoir is started to be supplied (step S 210). This removes the water contained in the waste oil supplied from the water remover (step S220), and puts the waste oil from which the water is removed into an esterification tank to give [OH] to the waste oil (step S230).

Here, in the esterification reactor 230, 5-10% of alkaline coagulants such as methyl alcohol (CH ₃ OH) or ethyl alcohol (C ₂ H ₅ OH) is added to 20-80% of waste oil. A refined waste oil prepared as an esterified reactant was prepared by mixing for 10-30 minutes at 50 ° C. or less with a mixed rotor.

The waste oil esterified by the esterification reactor 230 lowers the flash point of the pulverized coal upon stirring with the pulverized coal and at the same time increases the fluidity so that the mobility is improved even at a temperature of 50 ° C. lower than the transport temperature of BC-oil 60 ° C. It becomes good.

Then, the waste oil esterified in the esterification reaction tank 230 is stored in the refined waste oil storage tank 280 (step S240). Then, the waste oil stored in the refined waste oil storage tank 280 is supplied to the coal liquid processing unit 300 by the waste oil meter 290.

On the other hand, the pulverized coal and refined waste oil respectively supplied by the process as described above is stabilized through a stirring process by a separate ultrasonic treatment is converted to coal mixed liquid fuel (step S300).

Hereinafter, the stirring process of the pulverized coal and refined waste oil will be described in detail with reference to FIG. 5. 5 is a flowchart illustrating a stirring process of pulverized coal and refined waste oil in a coal mixed liquid fuel production method according to the present invention.

Here, the pulverized coal supplied and the refined waste oil are stirred and mixed at a predetermined ratio by the second stirrer 310 (step S310). At this time, water and oil are additionally supplied in addition to the pulverized coal and refined waste oil, and the mixed state of the pulverized coal and refined waste oil is stabilized by ultrasonic vibration of 10,000-20,000 Hz. At this time, the mixture is mixed with 30 to 60 weight ratio of crushed coal, 10 to 30 weight ratio of refined waste oil, 5 to 15 weight ratio of water, and 20 to 40 weight ratio of oil.

Meanwhile, the coal mixed liquid fuel slurried to an appropriate level by the second stirrer 310 is stored in the mixed fuel storage to complete the manufacture of the coal mixed liquid fuel.

Although described in detail with respect to preferred embodiments of the present invention as described above, those of ordinary skill in the art, without departing from the spirit and scope of the invention as defined in the appended claims Various modifications may be made to the invention. Therefore, changes in the future embodiments of the present invention will not be able to escape the technology of the present invention.

As described above, according to the coal-mixed liquid fuel manufacturing apparatus according to the present invention, the coal-mixed liquid fuel manufacturing method using the same and the coal-mixed liquid fuel produced thereby, generated during the transport of coal for use as a conventional fuel Pollution problems caused by dust, etc. can be solved, and by making anthracite available, it is possible to effectively use anthracite coal stored in Korea, thereby reducing the dependence on petroleum, and also being easy to store because it is liquid. In addition, by reducing the generation of ash during combustion, it is possible to reduce the post-combustion treatment and pollution problems, there is less effect of the generation of carbon dioxide than coal, there is also an improved economic effect compared to the existing bunker-C oil.

Claims (9)

Coal feeder where coal ore is stored and supplied, Dryer for drying the coal ore supplied from the coal feeder, A pulverizer for grinding the coal raw material dried in the dryer to a micro particle size, Coal collection storage for storing the pulverized coal pulverized in the crusher, A first stirrer for desulfurizing and deliming the pulverized coal by stirring a mineral liquid mixed with water and a coagulant at a concentration of 30 to 40% to the pulverized coal supplied from the coal collecting reservoir, Pulverized coal storage for transporting and storing the pulverized coal stirred in the first stirrer, A coal meter for controlling the supply of the pulverized coal supplied from the pulverized coal storage; Waste oil feeder in which waste oil is stored and supplied, A water remover for removing water contained in the waste oil supplied from the waste oil feeder, An esterification reaction tank for esterifying the waste oil from which water is removed from the water remover; Refined waste user major in which the esterified refined waste oil is transferred and stored in the esterification reaction tank, A waste oil meter for controlling the supply of the refined waste oil supplied from the refined waste oil storage tank, A second stirrer for mixing and grinding water and oil in a predetermined weight ratio to the pulverized coal supplied through the coal weigher and the refined waste oil supplied through the waste oil meter; Apparatus for producing a coal mixed liquid fuel characterized in that it comprises an ultrasonic processor for imparting ultrasonic vibration to the mixture stirred in the second stirrer. The method of claim 1, Sedimentation recovery that is separated and stored ganseok (脈 石 物) separated in the first stirrer, It is further provided with a purifier for recovering and purifying the flocculant separated from the precipitation recovery warehouse, Apparatus for producing a coal mixed liquid fuel, characterized in that for supplying the flocculant purified in the refiner to the second stirrer. The method of claim 1, wherein the grinder A first crusher for pulverizing the coal ore into a particle size of about 0.3 to 0.8 mm; Coal mixed liquid fuel manufacturing apparatus comprising a second mill for pulverizing the coal ore pulverized in the first mill to a micro particle size of about 3 ~ 8㎛. 30 to 50 weight ratio of demineralized coal extracted by stirring pulverized coal with a particle size of 3 to 8 μm, water and a coagulant added, 5 to 15 weight ratio of water, 20 to 40 weight ratio of oil and esthalation reaction Coal-mixed liquid fuel, characterized in that obtained by stirring the ultrasonic wave of a predetermined frequency after mixing and stirring the waste oil containing the [OH] group by 10-30 weight ratio. The coal mixed liquid fuel according to claim 4, wherein the flocculant is any one selected from kerosene, diesel oil, BC oil and DMU-101. Coal processing step of pulverizing coal into micro particles, supplying a predetermined amount of pulverized coal by desulfurizing and deliming the pulverized coal, Waste oil treatment step of removing the water contained in the waste oil, supplying a predetermined amount of purified waste oil by imparting [OH] group through the esterification reaction of the waste oil from which the water is removed, And a coal mixed liquid fuel manufacturing step of preparing the coal mixed liquid fuel by stirring and stabilizing the refined waste oil and the refined waste oil supplied. The method of claim 6, wherein the coal treatment step, A first grinding step of grinding the supplied coal ore into a particle size of about 0.3 to 0.8 mm, A second grinding step of forming the pulverized coal by pulverizing the pulverized coal ore to a micro particle size of about 3 ~ 8㎛, Coal mixed liquid fuel manufacturing method comprising a stirring step of desulfurization and deliming treatment by further stirring the pulverized crushed coal water and flocculant. According to claim 6, The waste oil treatment step, Water removal step to remove the water contained in the waste oil supplied, A method of producing a coal-mixed liquid fuel, characterized in that it comprises an esterification step of imparting an [OH] group by treating the waste oil from which moisture is removed. The method of claim 6, wherein the coal mixed liquid fuel manufacturing step, Coal mixed liquid fuel characterized by irradiating ultrasonic wave of a predetermined frequency after mixing and stirring the crushed coal 30-50 weight ratio, the waste oil 10-30 weight ratio, water 5-15 weight ratio, oil 20-40 weight ratio Manufacturing method.

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