[DESCRIPTION] [Invention Title] Manufacturing method of ash and water-free fuel and extraction and separation reactor for organic components therefor [Detailed Description] [Technical Field] The present invention relates to manufacturing method of ash and water-free fuel and extraction-separation reactor for organic components therefor. More specifically, the present invention relates to manufacturing method of ash and water-free fuel for extraction, separation and filtration to be carried out in a single reactor, which can simplify the process and increase the extraction yield and energy efficiency. [Background Art] A moisture in coal consumes energy because it absorbs a heat during vaporizing in the process of a combustion process. If a water-free coal is burned, the heat value by weight of the fuel increase, therefore a coal consumption to obtain a necessary energy can be reduced and simultaneously it has an effect to reduce a green-house gas emissions. Meanwhile, an ash in coal plays a role to decrease the heat transfer efficiency and to prohibit a flow of material while it is fused and adhered to the wall of pipe in the process of a combustion or gasification of the coal. - 1 - In addition, since the ash discharged in the process of work causes to environmental pollution, the additional process is necessary to collect the ash, therefore more operating expense is expected. If an ash-free coal is used, the heat transfer efficiency increases because the ash does not fuse and adhere to the wall of pipe. Accordingly the efficiency of work-process increases and green-house gas emissions also can be reduced. In addition, since the ash scarcely is discharged into the air, the additional operating cost is not necessary to manage for collecting process. In case, a coal is used as a sort of additives for polymer or functional carbon material, a ash in coal has a bad effect on quality of resulting product, otherwise the ash-free coal is used, the effect is achieved to enhance the quality of final output. Accordingly an attempt has been made to remove a moisture and ash in coal. As the method for removing the moisture in coal, one is to squeeze the moisture by pressing coal with mechanical power, and another is to evaporate the moisture by heating after making the slurry state by mixing the coal and a liquid or coal itself. As typical methods of manufacturing low ash coal, there is one method to remove only the ash with leaving organic component in fuel by using the acid and alkaline solution, there is another method to extract only the - 2 organic components with leaving ash of fuel by using organic solvent. In the above-described representative technology, in the case using the method of organic solvent extraction, the ash content of resulting product is about 0.02%. In the case of using the method of leaching with acid and alkaline solvent, the ash content of resulting product is about 0.1%. Therefore it has been disclosed that the ash content of resulting product is lower when adopting the method of organic solvent extraction. The patent US2010/0006477 (PCT/JP07/69833) related to the above-described organic solvent extraction discloses the step of extracting organic fuel from coal with moisture in high temperature, Since the method causes to load high pressure in extraction unit (or reactor) because of moisture evaporation, the manufacturing cost of the extraction unit and pipes is increasing, and after the recovering process of solvent, the process is also required to recover moisture and solvent selectively. Korean Patent number 10-961981 related to heat extraction with organic solvent discloses a method of manufacturing ash-free coal, however the method uses complicated system comprising a leaching unit, a precipitation unit and a filter unit, wherein the units are operated independently. In addition, according to research finding, it is generally known that the organic component extracted in - 3 liquid state from the coal can be easily precipitated in the solid state, if cooled under extraction temperature. In the above-described patent, since the extracted solution is naturally cooled in the process of moving to the above described each unit (such as the precipitation unit and the filter unit), the organic component in the extraction is easily precipitated. And the organic component of solid state by precipitation is settled down in the precipitation unit, or removed in filtering chamber. Therefore the finally resulting yield of ash free coal is reduced. To overcome this problem, it demands additional heating system. [ Disclosure] [Technical Problem] It is an object of the present invention to provide a method of producing clean fuel by dewatering the slurry before the process of solvent extraction It is an object of the present invention to provide an extraction and separation reactor for organic components, which improves energy efficiency and yield of organic components by performing the extraction and solid-liquid separation process with a single reactor. [Technical Solution] As a means for solving the problem, a method of preparing ash and water-free fuel from organic fuel comprises preparing a slurry by mixing a organic solvent with a organic fuel, feeding the slurry into the middle - 4 bottom side of a reactor, and extracting organic components with the organic solvent, and separating the slurry into a extracted solution including the organic components and a solid residue material, wherein the extracted solution is discharged through the upper part of the reactor and the solid residue material is discharged through bottom part of the reactor, wherein the step of extracting and separating is performed simultaneously or continuously in the reactor, and drying the extracted solution at a temperature above a boiling point of the organic solvent. The method of preparing ash and water-free fuel further comprises filtering the solid residue material before discharging through the upper part of the reactor. The method of preparing ash and water-free fuel further comprises collecting the solid residue material falling onto the bottom of the reactor and recirculating it into the reactor. It is another feature of an example embodiment of the present invention to provide a extraction and separation reactor for organic components, which comprises a body made with shape of a column, a slurry inlet for feeding the slurry mixed a organic solvent and a organic fuel at the middle-bottom side of the body, a solid residue discharge unit receiving and discharging a solid residue material sunk at the bottom part of the body, a extraction chamber having a stirrer and formed between the solid residue discharge unit and the slurry inlet in the body, wherein a organic component in the organic fuel is dissolved by the - 5 organic solvent, and a extracted solution discharge unit discharging the extracted solution including the organic components through the upper part of the body. The extraction and separation reactor further comprises a settling chamber separating the slurry into the extracted solution and the solid residue material by gravitational settling. The extraction and separation reactor further comprises a recirculation unit returning the solid residue material sucked before falling onto the bottom of the body into the extraction chamber, wherein the recirculation unit has a slurry outlet formed at the bottom part of the body and a recirculation pump circulating the slurry. It is another feature of an example embodiment of the present invention to provide a method for separating a organic component from the slurry mixed an organic solvent with an organic fuel comprises feeding the slurry into the middle-bottom side of a reactor, extracting the organic component with the organic solvent, and separating the slurry into a extracted solution including the organic components and a solid residue material, wherein the extracted solution is discharged through the upper part of the reactor and the solid residue material is discharged through bottom part of the reactor, wherein the extracting the organic component and the separating the slurry are performed simultaneously or continuously in the single reactor - 6- It is another feature of an example embodiment of the present invention to provide a apparatus for manufacturing an ash and water-free coal, which comprises a slurry mixer preparing the slurry by mixing an organic solvent with an organic fuel, the extraction and separation reactor according to the above-described reactor, which extracts an organic component from the organic fuel and simultaneously separates the slurry into a extracted solution and a solid residue material, a dryer of the extracted solution drying an extracted solution discharged through the upper part of the reactor, a dryer of the solid residue material drying the solid residue material discharged through the bottom of the reactor. [Advantageous Effects] The method of the present invention can facilitate to recover evaporated moisture by separately applying the step of removing moisture of the coal before the step of the solvent extraction, which prevents excessive pressure from generating in the extraction reactor, thereby it is economical to manufacture the reactor and other components. The extraction and separation reactor according to the present invention can facilitate manufacture and maintenance due to simplicity of device structure since the process of extraction, separation and filtration is performed in the single reactor. In addition, the extraction and separation reactor according to the present invention performs the process from solvent extraction to solid-liquid separation in a - 7 single reactor, therefore, the problem of the temperature change during transferring the organic component or coal from the process of extraction to the process of separation and filtration does not take place, and then the yield of the ash and water-free fuel increases. [Description of Drawings] FIG. 1 is a process flow chart according to a method for manufacturing an ash and water-free fuel of the present invention; FIG. 2 is a schematic view showing an extraction and separation reactor for organic components of the present invention; [Best Mode] Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a process flow chart according to a method for manufacturing an ash and water-free fuel of the present invention. FIG. 2 is a schematic view showing an extraction and separation reactor for organic components of the present invention. As shown in FIG. 1, the method of producing clean fuel includes preparing a slurry (hereinafter, it can be used as "a slurry preparation step"(1), extracting a organic components and separating the slurry (hereinafter, it can be used as "an extraction-separation step") (2) and drying a extracted solution(hereinafter, it can be used as "a drying step") (3) -8- The slurry preparation step (1) is a step of mixing a raw material of solid state with an organic solvent of liquid phase(S3) to form a slurry. The raw material can be suitably used as coal, biomass, and all kinds of organic fuels which require removing moisture and ash. Hereinafter, coal (also refer to as raw coal) used as the raw material or the organic fuels. In below, although the coal as a solid raw material, for example, is described specifically, the method of described below is not particularly limited to the coal. When the coal as a raw material is pulverized with a pulverizer, the pulverized coal can have a particle size of 50~300 pm, preferably a particle size of 100 pm, but it is not limited to the above size. Generally when the particle size of the coal is under 50 pm, it is interrupted to contact the particles of coal with solvent because of agglomerating the particles. When the particle size of the coal exceeds 300 pm, it demands much more time to extract organic components from the coal. If the particle size of the coal is in the range of 50 to 300 pm, it has an advantage of broadening contact area between coal and solvent, and smooth transferring the slurry obtained in the slurry preparation step to the extraction-separation step. The organic solvent for extracting organic components from coal may include, for example, N-methyl-2-pyrrolidone - 9 - (NMP), 1-Methylnaphthalene (1-MN), Light Cycle Oil (LCO) and so on. The organic solvent may have a boiling point in the range of 2000C to 3000C. The mixing ratio of the raw material (or the raw coal) and solvent is suitable for in the range of 1 to 2~10 by weight. When the amount of the solvent exceeds 10 relative to 1 of the raw material by weight, the ratio of organic component extracted in the solvent to the amount of solvent is low, which is not economical. If the amount of the solvent is less than 2 relative to 1 of the raw material by weight, the viscosity of the slurry is so high that transfer and filtering of the slurry tend to be difficult. The slurry preparation step (1) may additionally include the step of removing moisture of organic fuel (such as coal) by heating the slurry in the range of a boiling point of the water to that of solvent. During the process, the evaporated moisture(S4) may be discharged into air. Preferably, removing moisture of organic fuel can be achieved to heat the slurry in the range of 1050C to 1400C. If the heating temperature is lower than 1050C, the evaporation of the moisture does not occur sufficiently. On the other hand, if the temperature is excessive to 1400C, the evaporation amount of the solvent may increase much more, thereby decreasing an extraction yield. - 10 - The slurry(S5) obtained in the step of slurry preparation step(1) is transferred to the step of extraction and separation(2) using pump. The slurry(S5) is heated to a suitable temperature for extraction by a preheater which is not described in FIG 1. As described above, the step of extraction and separation(2) is step of extracting the organic components from a coal, and then separating the slurry a non-solid solution into a solid residue material. Here, "non-solid solution" refers to solution containing the organic solvent and organic components extracted in the organic solvent from the coal. Hereinafter, the term "extracted solution" is used as the same meaning with "non-solid solution". In addition, the term "solid residue material" refers to a coal component that is insoluble in the solvent, and the solid residue may contain the solvent few. The step of extraction and separation(2) can be carried out by a extraction and separation reactor(100) as shown in FIG. 2. The step of extraction and separation(2) is a step of performing an extraction and solid-liquid separation simultaneously or continuously by the reactor(100) which is a single reactor. In the step of extraction and separation(2), the slurry is lifted from the lower part to the upper part of the reactor(100) . In the step of extraction and separation(2), most liquid components of slurry have a path - 11 to go up to upper part of the reactor(100), and then most solid components have a path to go down to lower part of the reactor(100). Preferably, in the step of extraction and separation(2), the slurry is fed into the middle-bottom side of a reactor, and the extracted solution including organic components which are dissolved by the organic solvent discharges through the upper part of reactor(100), and the solid residue material sinks to bottom part of reactor(100) by gravity. Here, the term "the middle-bottom side of a reactor" includes from the middle of part of a reactor to the bottom part of it. In the step of extraction and separation(2), while the process of the slurry being supplied and raised in the reactor(100), it is at the area of the lower part of the reactor that the extraction of organic component is performed dominantly, and it is at the area of the upper part of the reactor that the sedimentation of solid residue material is carried out dominantly with a gravitational settling. In the step of extraction and separation(2), although the extraction of organic components and separation is conducted throughout from the lower part to the upper part of a single reactor, in the lower part, the extraction of organic component from the raw coal is performed more actively and in the upper part of the reactor, the - 12 separation of the extracted solution and the solid residue material is mainly carried out by gravitational settling. In the case of coal, it is heated preferably at a temperature in the range of 300'C to 400 0C, which enables to extract molecules inside of the particles while (because) a bond between molecules constituting coal is sufficiently weakened. When the organic solvent is heated at the above temperature range of 300'C to 400 'C, the pressure in the reactor(100) may rise in the range of 10 to 25 bar. The step of extraction and separation(2) can control the rising velocity of extracted solution to be slower than the settling velocity of the solid residue material. For example, since coal particles of about 100 pm in diameter gravitate at a speed of 2mm per second at 350 'C with N methyl-2-pyr-rolidinone (NMP), the rising velocity of extracted solution should be controlled slower than 2mm per second, wherein the rising velocity of extracted solution depends on the particle size, for examples, the type of solvent, and the operating condition of the reactor. In the step of extraction and separation(2), while the slurry stays inside a reactor for 30 minutes to 3 hours, preferably 50 minutes to 2 hours, the extraction of organic component and the separation into extracted solution and solid residue material can be performed simultaneously in the single reactor. - 13 - The step of extraction and separation(2) may include additionally a step of filtration for filtering the solid residue material mixed with the extraction solution before discharging through the upper part of reactor(100). The step of filtration is a step of filtering a solid residue and unextracted coal arrived the upper part of the reactor and returing it back to inside of the reactor by using filter cleaning device. The present invention can include additionally a step of recirculating the solid residue material which is sucked before falling onto the bottom of the reactor. The step of recirculation may increase an extraction yield, because the coal particles still having organic components are sucked before being discharged from the reactor, and are fed into the middle-bottom side of the reactor again, so the coal particles can be circulated repeatedly in the reactor. The present invention includes a drying step of extracted solution(3). The drying step(3) heats the extracted solution(S6) at more than a boiling point of the organic solvent and then gets an ash and moisture-free coal(S9) in solid state, while the organic solvent can be recovered after discharging by heat exchanging. The present invention includes a drying step(4) of solid residue(S7) discharged out of the bottom of the reactor. The drying step(4) of solid residue(S7) heats at more than a boiling point of the organic solvent. - 14 - The dryer for drying an extracted solution can be used such as drum type and spray type, it is not particularly limited to that. The drying step of solid residue material(4) is a step of drying the organic solvent from the high density residue slurry made of coal of solid state not extracted by the solvent, the ash and the solvent in the step of extraction and separation(2). In the drying step of solid residue material(4), dryer such as drum type and fluidized bed type may be used, it is not particularly limited to that. By the drying step of solid residue(4), the solvent is evaporated and discharged(S1O) in vapor phase, and the dried residue coal(S11) can be used for heat sources for an extraction process. Although the ash content of the residue coal may increase a little comparing with the raw coal, the heat value of the residue coal(S11) is higher than that of the raw coal since the moisture is removed from the residue coal. The present invention includes a treatment step(5) of solvent recovery(S8, S10, S12) which is gathered from a drying step of extracted solution(3) and drying step of residue(4). In the treatment step(5), the recovered solvent(S8, S10, S12) may be liquefied by heat recovery system. In addition, the treatment step(5) can include a process for removing impurities such as ash and moisture - 15 from the solvent recovered and conducting chemical treatment to them. In another aspect, the present invention is the method of extracting and separating organic components from the slurry comprising organic solvents and organic fuels. The method of extracting and separating organic components has characteristics to feeding the slurry into the middle-bottom side of a reactor, and discharging the extracted solution including organic components dissolved by the organic solvent through the upper part of reactor(100), and discharging the solid residue material settled down to bottom part of reactor(100) by gravity. The method of extracting and separating organic components as described above can have a reference to described above in detail. In other aspect of view, the present invention relates to an extraction and separation reactor for the organic components. The reactor can be used in a step of extraction and separation, and the method of extracting and separating for organic components. Merely, the reactor(100) is not only a reactor to conduct the method for extracting and separating organic components of the present invention, and it will be understood the reactor modified by those of ordinary skill in the art without departing from the features of the present invention can be included in the scope of the present of invention. - 16 - The extracting and separating reactor for organic components (hereinafter, also referred to as "reactor") (100) in the present of invention includes the body(10), slurry inlet(20), solid residue discharge unit(30) extraction chamber(40), and extracted solution discharge unit(50). The body(10) of reactor is a column type structure. The body(10) is preferably the structure of column shape which is able to retain a long stay time of the slurry and is easily used for gravitational separation of the slurry into the extracted solution and the solid residue material. The height and width of body(10) of the reactor is able to be controlled according to such as the particle size, weight of the raw coal, reaction time, the amount of solvent, and so on. The proportion of height and width of body(10) of the reactor(100) is not limited, for example, it can be in the range of 1 : 5 to 10. The slurry inlet unit(20) formed at the middle-bottom side of a reactor feeds a slurry mixed organic solvent with the raw coal. Here, the term "the middle-bottom side of a reactor" includes from the middle side part of a reactor to the bottom side part of it The solid residue discharge unit(30) formed at the bottom part(underbody) of the reactor receives and discharges the settling solid residue(S7). The bottom side - 17 part is preferably the structure of hopper shape which is able to easily collect the solid residue(S7). The extraction chamber(40) formed between the solid residue discharge unit(30) and the slurry inlet unit(20) in the reactor comprises a stirrer(41) mixing the slurry, in which the organic component of coal is dissolved by the organic solvent. A magnetic stirrer or an ultrasonic generator can be used as the stirrer(41). The slurry is fed to the upper part of the extraction chamber(40) through the slurry inlet unit(20). The organic component of the coal in the slurry fed to the extraction chamber(40) is extracted by contacting the solvent while the slurry is mixed with the stirrer. The extracted organic component in the liquid state recirculates with solvents in the inner part of the extraction chamber(40) and then is going up to the upper part of the extraction chamber(40) by a rising flow. The extraction time for which the slurry stays in the extraction chamber is not limited, but is suitably in the range of 10 to 90 minutes, preferably in the range of 30 to 60 minutes. If the extraction time is shorter than 30 minutes, the quantity of extracted organic component decreases. On the other hand, although the extraction time exceeds 60 minutes, the extraction yield does not increase significantly, which is not economical. The extraction and separation reactor(100) can include the recirculation unit(60) collecting the solid - 18 residue material before settling onto the bottom of the reactor into the extraction chamber. The recirculation unit(60) can have a slurry outlet(61) formed at bottom part of the body and a recirculation pump(62) circulating the slurry. The recirculation unit(60) performs to prolong a residence time of the solid residue material in the extraction chamber by collecting and re-feeding it to the upper part of extraction chamber The recirculation unit(60) can have a heater at the inlet and outlet of the recirculation pump(62). The heater can maintain the temperature of the slurry in the range of the extraction temperature. The reactor can include the settling chamber(70). The settling chamber(70) can separate the slurry into the extracted solution and the solid residue material by gravitational settling. The settling chamber(70) can be made between the slurry inlet(20) and the extracted solution discharge unit(50), which preferably is controlled to have a suitable height for the slurry to stay in the range of 10 to 90 minutes, preferably 20 to 30 minutes. The settling chamber(70) can supplementally have a rectifier(71) to decrease the turbulent flow of the slurry. The rectifier(71) facilitates the gravitational settling by decreasing the turbulent flow caused by the stirrer(41) of the extraction chamber. The rectifier(71) such as baffles is formed on the extraction chamber(40). - 19 - While the solid residues are falling and passing through the settling chamber(70) and then are re-mixed with the slurry in the extraction chamber(40), the organic components are extracted additionally by contacting with organic solvent. The reactor can include the filter chamber(80) to filter the entrained solid residue material under the extracted solution discharge unit(50). The filter chamber(80) can include the filter(81) made with ceramic or metallic material and the filter cleaning unit(82) which returns the solid residue material collected on the filter surface back to the settling chamber(70) by injecting pressurized solvent. The filter(81) can have pores in the range of 0.1 to 10 p The filter cleaning unit(82) can separate the solid residue material from the filter by injecting solvent from inside of the filter to outside of the filter. The solid residue separated from the filter by the filter cleaning unit(82) can fall down again by force of gravity The method of manufacturing the ash and water-free fuel according to the present invention is easy to evaporate moisture by applying the step of removing moisture of the coal before the step of the solvent extraction, which prevents excessive pressure from generating in the extraction reactor, thereby it is economical to manufacture the reactor and other components. - 20 - The extraction and separation reactor according to the present invention is easy to manufacture and maintain due to simplicity of device structure because the process of extraction, separation and filtering is performed in the one single reactor. The extraction and separation reactor according to the present invention performs the process of from solvent extraction to solid-liquid separation in a single reactor, therefore, the problem of the temperature change due to transferring the organic component or coal from the process of extraction to the process of separation and filtering does not occur and then the yield of the ash and water-free fuel increases. In other aspect, the present invent relates to the apparatus for manufacturing an ash and water-free coal. The apparatus can be understood according to the process of manufacture in Fig 1, the undescribed part in detail can be referred as described above. The apparatus includes a slurry mixer(1), the extraction and separation reactor(2), the dryer of extracted solution(3) and the dryer of solid residue(4) The slurry mixer(1) is a reactor to manufacture a slurry by mixing organic solvent with organic fuels. The slurry mixer(1) can include a removing system of moisture, which can be used as a general reactor or store tank surrounded with a heater. The extraction and separation reactor is an apparatus to extract only organic components from a fuel included in the - 21 slurry and simultaneously to separate the extracted solution and the solid residue material, it can be referred to the reactor(100) described above. The dryer of extracted solution is a apparatus to dry the extracted solution discharged through the upper part of reactor(100), which can be used such as drum or spray type dryers. The dryer of solid residue material is an apparatus to dry the solid residue comprising the organic solvent and residue coal, and the dryer such as drum type and fluidized bed type may be used. The apparatus for manufacturing an ash and water-free coal can have a processor(5) of recovered solvents. The processer(5) can gather the solvents from a drying step of extracted solution(3) and drying step of solid residue material(4) and liquefy the gathered solvents by a heat recovery system. The apparatus for manufacturing an ash and water-free coal can have additionally an equipment for removing impurities such as ash and moisture from the recovered solvents and conducting chemical treatment to them. Example embodiments of the present invention have been disclosed herein, and although specific terms are employed, they are used and are to be interpreted in a generic and descriptive sense only and not for purpose of limitation. Accordingly, it will be understood by those of ordinary skill in the art that various changes in form and details may be made without departing from the spirit and - 22 scope of the present invention as set forth in the following claims. - 23 -