JP2007145974A - Oil purification apparatus for waste cooking oil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil purification apparatus for waste cooking oil, with which impurities are effectively removed from a waste cooking oil and the waste cooking oil is purified into a substitute fuel oil for diesel engine in spite of being a simple and inexpensive apparatus constitution. <P>SOLUTION: The oil purifying apparatus for waste cooking oil has a constitution that when a waste cooking oil mixed with an adsorbent is fed to the heating and stirring tank 3 of a heating and stirring apparatus 1, a heater 8 and a stirrer 7 attached to the heating and stirring tank 3 stir the waste cooking oil and the adsorbent while heating to adsorb impurities contained in the waste cooking oil on the adsorbent. Then the waste cooking oil containing the adsorbent is passed through a coarse filtration filter 13F in a coarse filtration tank 13 and a microfiltration filter 15F in a microfiltration tank 15 constituting a filtration and purification apparatus 2 and the adsorbent and the impurities are filtered off from the waste cooking oil to purify a substitute fuel oil for diesel engine. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a waste edible oil refining apparatus for refining waste edible oil, which is a used edible oil, and more particularly to a waste edible oil refining apparatus for refining waste edible oil into an alternative fuel oil for a diesel engine. .

  Used cooking oil such as tempura oil and salad oil is generally called waste cooking oil, but this waste cooking oil has a large biochemical oxygen demand (BOD) and a very high environmental impact. If discharged to public water together with water, it will cause water pollution. Thus, various studies have been made on the reuse of such waste cooking oil without discarding it.

  On the other hand, fossil fuels such as light oil and gasoline emit gas that causes global warming due to their combustion, and in recent years their use has been required to be reduced. As part of this, there is a need for alternative fuels for diesel engines that replace diesel oil.

  Here, waste edible oil has a cetane number representing ignitability equal to or higher than that of light oil, so it is refined and impurities such as metal components (Na, Ca, Mg, glucose, chloride ions, sulfate ions) ) Is sufficiently usable as an alternative fuel oil for diesel engines. And this alternative fuel oil made from waste cooking oil is a plant-derived oil that was originally produced by photosynthesis by taking in carbon dioxide in the air from plants such as rapeseed and sunflower, so it is exhausted like fossil fuels such as light oil. SOx is not released into the gas.

In addition, since this alternative fuel oil made from waste cooking oil is an oxygen-containing fuel that is originally combined with oxygen, the fuel and oxygen are mixed more quickly than light oil. The generation of carbon dioxide (CO ₂ ), black smoke, and particulate matter (particulate matter (PM)) in the gas is less than that of light oil.

  In addition, this alternative fuel oil made from waste edible oil is made from plant-derived raw materials (biomass), so it can be regarded as carbon neutral, and its active use is also an effective measure against global warming. is there.

  In view of this technical background, various methods and apparatuses for removing impurities from waste edible oils and using them as alternative fuel oils for diesel engines have been proposed, and recently, waste edible oil and methanol are reacted. A method of using waste edible oil as an alternative fuel oil for diesel engines has been developed by the methyl esterification technology.

Patent Document 1 discloses a technology for reforming to an alternative fuel oil for a low melting point diesel engine by introducing ozone into a high melting point waste cooking oil and cracking it.
JP 2003-321683 A

  By the way, in the technology of reacting waste edible oil with methanol to produce methyl ester, not only expensive equipment is required, but also substances with high environmental load including glycerin are generated. The problem is whether to deal with it. Moreover, in the technique described in patent document 1, there exists a problem that the apparatus for introduce | transducing ozone into waste cooking oil and cracking is expensive and complicated.

  Accordingly, the present invention provides a waste edible oil refining device that can effectively remove impurities from waste edible oil and refine it into an alternative fuel oil for a diesel engine while having a simple and inexpensive device configuration. Is an issue.

  A waste edible oil refining device according to the present invention is a device for refining waste edible oil into an alternative fuel oil for a diesel engine, and is a heating and stirring device that stirs while heating waste edible oil mixed with an adsorbent. And a filter purification device for filtering impurities together with the adsorbent from the waste edible oil heated and stirred by the heating and stirring device.

  In the waste edible oil refining apparatus according to the present invention, the waste edible oil mixed with the adsorbent is agitated while being heated by the heating and agitating device, whereby the impurities contained in the waste edible oil are adsorbed by the adsorbent. And a filtration refinement | purification apparatus filters an impurity with this adsorbent from this waste edible oil, and refine | purifies waste edible oil into the alternative fuel oil for diesel engines.

  Here, examples of the waste edible oil include rapeseed oil, sunflower oil, and various waste edible oils such as olive oil, sesame oil, coconut oil, soybean oil, corn oil, cottonseed oil, and peanut oil. As the adsorbent, activated clay, activated carbon, diatomaceous earth, zeolite, bone ash and the like can be used.

  In the waste edible oil refining apparatus of the present invention, the heating and stirring apparatus can be configured to have a heating and stirring tank having a built-in stirrer for storing and stirring the waste edible oil mixed with the adsorbent. In this case, at the top of the heating and stirring tank, a raw material charging port into which the waste edible oil and the adsorbent are charged, a heater mounting port to which the heater is mounted, and a stirrer mounting port to which the stirrer is mounted, A pressurized air introduction port through which pressurized air for delivering waste cooking oil is introduced, and a raw material delivery port that is opened and closed by an on-off valve is provided at the bottom of the heating and stirring tank. preferable.

  In a waste edible oil refining apparatus having such a heated agitation tank, waste edible oil and adsorbent are introduced into the heated agitation tank from the raw material charging port at the top of the heated agitation tank. The waste edible oil and the adsorbent are heated by a heater attached to the heater attachment port at the top of the heating and stirring tank, and stirred by the agitator attached to the agitator attachment port at the top of the heating and stirring tank. Thus, the impurities contained in the waste edible oil are adsorbed by the adsorbent. The waste edible oil containing the adsorbent that has adsorbed the impurities is converted into the raw material by the pressurized air introduced from the pressurized air inlet at the upper part of the heated stirring tank when the raw material delivery port at the lower part of the heated stirring tank is opened. It is sent from the delivery port to the filtration and purification device side.

  Here, it is preferable that the raw material charging port and the stirrer mounting port in the upper part of the heating and stirring tank are shared, and the lower raw material delivery port also serves as the drain port because the structure of the heating and stirring tank is simplified. .

  Further, the stirrer can have a structure having rotating blades that are driven to rotate inside the heating and stirring tank through a drive shaft by a motor arranged outside the heating and stirring tank. In this case, if this rotor blade has a blade shape that generates a downward flow in the waste edible oil stored in the heating and stirring tank, the waste edible oil circulates in the heating and stirring tank greatly up and down, It is preferable because it is uniformly heated.

  Furthermore, when the heater is composed of an electric heater having a heat resistance of at least 150 ° C. and a thermometer for measuring the temperature of the waste edible oil is attached in the vicinity of the electric heater, the temperature control of the waste edible oil is performed. Is preferable.

  In addition, in order to send waste cooking oil in the heating and stirring tank from the raw material delivery port in the lower part of the heating and stirring tank to the filtration purification apparatus side by pressurized air introduced from the pressurized air introduction port in the upper part of the heating and stirring tank The raw material charging port, the heater mounting port, the stirrer mounting port, and the pressurized air inlet port of the heating and stirring tank are configured to be hermetically sealed, and the raw material outlet is connected to the filtration and purification device via a heat-resistant / pressure-resistant hose. It is preferable. The heat-resistant / pressure-resistant hose is preferably a coupler type that can be easily attached and detached.

  On the other hand, in the waste edible oil refining apparatus of the present invention, the filtering and refining apparatus has a built-in roughing filter in the roughing tank connected to the heating and stirring apparatus, and the fine filtering is connected to the roughing tank. The tank may have a structure in which a fine filter is built in.

  In a waste edible oil refiner equipped with a filter refiner having such a structure, the adsorbent that adsorbs impurities in the waste edible oil delivered from the heating and stirring device is used for the coarse filter and the fine filter in the coarse filter tank. It is filtered and removed in two stages by a fine filter in the tank.

  Here, the filter for coarse filtration and the filter for fine filtration are made of metal, and the filter for coarse filtration and the filter for fine filtration are introduced from the raw material outlet provided in the tank for coarse filtration and the tank for fine filtration, respectively. It is preferable that the shape of the filter is such that it can be backwashed by the pressurized air because maintenance work against clogging of the coarse filter and the fine filter is facilitated.

  In addition, if a drain port that can be opened and closed is provided at the bottom of each of the coarse filtration tank and the fine filtration tank, the washing liquid when washing the coarse filtration tank and the fine filtration tank can be easily made from the drain port. It is preferable because it can be discharged.

  In addition, if a hot water bath for the coarse filtration tank and the fine filtration tank is attached, it is possible to prevent the temperature of the waste cooking oil in the coarse filtration tank and the fine filtration tank from being lowered, and the coarse filtration filter and the fine filtration tank. This is preferable because an increase in the viscosity of waste edible oil passing through the filter can be prevented.

  In the waste edible oil refining apparatus according to the present invention, the waste edible oil mixed with the adsorbent is agitated while being heated by the heating and agitating device, whereby the impurities contained in the waste edible oil are adsorbed by the adsorbent. And a filtration refinement | purification apparatus filters an impurity with this adsorbent from this waste edible oil, and refine | purifies waste edible oil into the alternative fuel oil for diesel engines. That is, according to the waste edible oil refining apparatus of the present invention, while having a simple and inexpensive apparatus configuration equipped with a heating and stirring apparatus and a filtration refining apparatus, impurities can be effectively removed from waste edible oil and used for diesel engines. Can be refined into alternative fuel oils.

  Hereinafter, embodiments of a waste edible oil refining apparatus according to the present invention will be described with reference to the drawings. 1 to 3 are schematic diagrams showing a schematic configuration of a waste edible oil refining apparatus according to an embodiment, and FIG. 1 is a schematic diagram of a state in which a raw material oil supply hose is connected to a heating and stirring tank. FIG. 2 is a schematic view of a state where a heater and a stirrer are connected to the heated stirring tank, and FIG. 3 is a schematic view of a state where a pressurized air supply hose is connected to the heated stirring tank.

  The waste edible oil refining apparatus according to one embodiment shown in FIGS. 1 to 3 is an apparatus for refining waste edible oil into an alternative fuel oil for a diesel engine, and heats waste edible oil mixed with an adsorbent. In addition, a heating and stirring device 1 that stirs while stirring, and a filter purification device 2 that filters impurities together with the adsorbent from waste cooking oil heated and stirred by the heating and stirring device 1 are provided.

  Here, as waste edible oil, various waste edible oils such as rapeseed oil, sunflower oil, corn oil, olive oil, sesame oil, coconut oil, soybean oil, cottonseed oil, peanut oil and the like can be used. Further, the adsorbent can adsorb and remove impurity components (Na, Ca, Mg, glucose, chloride ions, sulfate ions) in the edible oil. For example, activated clay, which is an aluminosilica-based oxidation catalyst, or activated carbon. Is mainly used, but diatomaceous earth, zeolite, bone ash and the like can also be used.

  The heating and stirring device 1 includes a heating and stirring tank 3 for storing waste cooking oil mixed with an adsorbent and heating and stirring. In the upper part of the heating and stirring tank 3, a stirrer mounting port 3A, a heater mounting port 3B, and a pressurized air introduction port 3C are provided, and these are structured so that airtightness can be maintained by a sealing lid. ing. A raw material oil delivery port 3E that is opened and closed by an on-off valve 3D is provided below the heating and agitation tank 3 also as a drain port.

  The stirrer mounting port 3A of the heating and stirring tank 3 also serves as a raw material charging port into which waste edible oil and adsorbent are charged. As shown in FIG. 1, the waste edible oil OIL recovered in the oil recovery tank 4 is used. The end portion on the discharge side of the raw material oil supply hose 6 that is sucked and discharged by the operation of the pump 5 is inserted. The waste edible oil OIL recovered in the oil recovery tank 4 has previously removed large residues such as tempura residue as a primary filter.

  A stirrer 7 shown in FIG. 2 is detachably attached to the agitator attachment port 3A. The stirrer 7 includes a drive motor 7A disposed outside the heating and stirring tank 3, and a rotary blade 7C that is driven to rotate inside the heating and stirring tank 3 by the drive motor 7A via a drive shaft 7B. The rotor blade 7C has an airfoil shape that generates a downward flow in the waste cooking oil OIL accommodated in the heating and stirring tank 3.

  An electric heater 8 shown in FIG. 2 is detachably mounted as a heater in the heater mounting port 3B of the heating and stirring tank 3. The electric heater 8 has a heat resistance of at least 150 ° C. The electric heater 8 is provided with a thermometer (not shown) for measuring the temperature of the waste cooking oil OIL.

  A discharge-side end of a pressurized air supply hose 11 connected to the air compressor 9 shown in FIG. 3 via a pressure regulating valve 10 is detachably and airtightly connected to the pressurized air introduction port 3C of the heated stirring tank 3. It has come to be. Then, pressurized air is introduced into the heated agitation tank 3 from the air compressor 9 via the pressurized air supply hose 11, and the waste edible oil OIL in the heated agitation tank 3 is sent out by this pressurized air. It has become.

  On the other hand, the filtration and purification apparatus 2 includes a roughing tank 13 connected to the heating and stirring tank 3 constituting the heating and stirring apparatus 1 via a heat and pressure resistant hose 12, and a heat and pressure resistant hose 14 to the roughing tank 13. And a precision filtering tank 15 connected to each other.

  A raw material oil inlet 13A is provided in the peripheral wall portion of the roughing tank 13, and this raw material oil inlet 13A is connected to a raw material oil outlet 3E at the bottom of the heating and stirring tank 3 via a heat-resistant / pressure-resistant hose 12. Has been. A raw material oil outlet 13C that is opened and closed by an on-off valve 13B is provided at the ceiling of the roughing tank 13, and a drain port 13E that is opened and closed by an on-off valve 13D is provided at the bottom.

  Here, a coarse filter 13F is installed inside the coarse filter tank 13. The coarse filter 13F is a metal filter having a coarseness of about 40 μm, and is formed into a shape that can be backwashed by introducing pressurized air from the raw material oil outlet 13C, for example, a bottomed cylindrical shape. Has been. The coarse filter 13F is installed in a state where the upper opening communicates with the raw material oil outlet 13C.

  The fine filtration tank 15 is configured in the same manner as the coarse filtration tank 13, and a raw material oil inlet 15 </ b> A is provided on the peripheral wall portion thereof. The raw material oil inlet 15A is connected to a raw material oil outlet 13C at the ceiling of the roughing tank 13 via a heat and pressure resistant hose 14.

  A raw oil outlet 15C that is opened and closed by an on-off valve 15B is provided at the ceiling of the precision filtering tank 15, and a drain port 15E that is opened and closed by an on-off valve 15D is provided at the bottom. A heat-resistant / pressure-resistant hose 16 is connected to the raw material oil outlet 15 </ b> C at the ceiling of the precision filtering tank 15, and its open end faces the oil storage tank 17.

  Here, inside the precision filtering tank 15, a precision filtering filter 15F is provided. This fine filter 15F is a metal filter having a coarseness of about 2 μm, and is formed into a shape that can be backwashed by introducing pressurized air from the raw material oil outlet 15C, for example, a bottomed cylindrical shape. Has been. And this fine filter 15F is installed in the state which the opening part of the upper part connected to 13C of raw material oil outflow ports.

  In order to refine waste edible oil using the waste edible oil refining apparatus according to one embodiment configured as described above, first, as shown in FIG. 1, a large residue such as tempura residue by primary filtration in advance. The edible cooking oil OIL from which oil is removed is prepared in the oil recovery tank 4 for purification. Then, the sealing lid of the stirrer mounting port 3A that also serves as the raw material charging port of the heating and stirring tank 3 constituting the heating and stirring device 1 is removed, and the end of the discharge side of the raw material oil supply hose 6 is connected to the stirrer mounting port 3A. insert. After such preparation, the pump 5 is operated to feed the waste cooking oil OIL in the oil recovery tank 4 into the heating and stirring tank 3 through the raw material oil supply hose 6.

  In this case, the on-off valve 3D that opens and closes the raw material delivery port 3E at the bottom of the heating and stirring tank 3 is closed so that the waste cooking oil OIL does not flow out. In addition, waste cooking oil OIL is charged about 90% of the volume of the heating and agitation tank 3 in consideration of volume expansion due to subsequent heating.

  When the introduction of the waste cooking oil OIL into the heating and stirring tank 3 is completed, the raw material oil supply hose 6 is removed from the stirrer mounting port 3A that also serves as the raw material charging port, and the heating and stirring tank 3 is discharged from the stirringer mounting port 3A. An appropriate amount of adsorbent is put into the inside.

  Next, as shown in FIG. 2, the stirrer 7 is mounted on the stirrer mounting port 3A of the heated stirring tank 3, and the electric heater 8 is mounted on the heater mounting port 3B. And the electric heater 8 is heated to 100-120 degreeC, rotating the rotary blade 7C of the stirrer 7 by the drive of 7 A of drive motors.

  By doing so, the waste cooking oil OIL in the heating and stirring tank 3 moves to the electric heater 8 side as a downward flow along the inner surface of the heating and stirring tank 3 from the rotary blade 7C, and is heated by the electric heater 8 As a result, the flow becomes an upward flow and moves to the stirrer 7 side. Thus, the waste edible oil OIL circulating in the heating and stirring tank 3 is stirred while being uniformly heated to a temperature of 100 to 120 ° C. together with the adsorbent. In this process, impurity components (Na, Ca, Mg, glucose, chloride ions, sulfate ions) contained in the waste edible oil OIL are adsorbed by the adsorbent.

  If the waste edible oil OIL in the heating / stirring tank 3 is uniformly heated and stirred and the impurity component is adsorbed to the adsorbent, the stirrer 7 is removed from the stirrer mounting port 3A and the electric heater 8 from the heater mounting port 3B. The stirrer mounting port 3A and the heater mounting port 3B are sealed with a sealing lid.

  Subsequently, as shown in FIG. 3, the discharge-side end of the pressurized air supply hose 11 is airtightly connected to the pressurized air introduction port 3 </ b> C of the heating and stirring tank 3, and the pressure is adjusted by the pressure adjusting valve 10 from the air compressor 9. The pressurized air thus introduced is introduced into the upper part of the heated stirring tank 3. Then, the on-off valve 3D for the raw material delivery port 3E of the heating and agitation tank 3 is gradually opened, the on-off valve 13B for the raw material oil outlet 13C of the roughing tank 13 constituting the filtration purification device 2 and the precision filtration tank. The on-off valve 15B for the 15 raw material oil outlets 15C is gradually opened.

  In this way, the low-viscosity waste edible oil OIL that has been uniformly heated to a temperature of 100 to 120 ° C. in the heating and stirring tank 3 is an impurity component (Na, Ca, Mg, glucose, chloride ions, sulfate ions). And the adsorbent adsorbing the water from the raw material oil inlet 13A through the heat-resistant / pressure-resistant hose 12 into the roughing tank 13.

  Then, the low-viscosity waste cooking oil OIL filled in the coarse filtering tank 13 flows from the raw material oil outlet 13C into the precision filtering tank 15 through the heat and pressure resistant hose 14 and from the raw oil inlet 15A. The low-viscosity waste cooking oil OIL filled in the precision filtering tank 15 flows out from the raw material oil outlet 15 </ b> C into the oil storage tank 17 through the heat-resistant / pressure-resistant hose 16.

  At that time, a large particle adsorbent adsorbing impurity components (Na, Ca, Mg, glucose, chloride ions, sulfate ions) contained in the waste cooking oil OIL is filtered by the coarse filter 13F in the coarse tank 13. Subsequently, the small particle adsorbent is filtered by the fine filter 15F in the fine filter tank 15.

  The refined waste cooking oil OIL from which impurity components (Na, Ca, Mg, glucose, chloride ions, sulfate ions) are sufficiently removed by filtering in two stages in this way is an alternative fuel oil for diesel engines. Is stored in the oil storage tank 17.

  When the adsorbent is deposited on the bottom of the heating and stirring tank 3 constituting the heating and stirring device 1 after the purification operation of the waste cooking oil OIL by the waste cooking oil refining device of one embodiment, as an example of the tank cleaning operation, For example, as shown in FIG. 3, the discharge side end of the pressurized air supply hose 11 is airtightly connected to the pressurized air inlet 3 </ b> C of the heated stirring tank 3, and heat resistance is provided from the raw material delivery port 3 </ b> E of the heated stirring tank 3. -Remove the pressure hose 12 and fully open the on-off valve 3D. Then, the pressurized air regulated by the pressure regulating valve 10 from the air compressor 9 is injected into the heated stirring tank 3. By doing so, the adsorbent deposited on the bottom of the heating and stirring tank 3 can be discharged to the outside from the raw material delivery port 3E.

  As another example of the tank cleaning operation described above, a stirrer mounting port 3A that also serves as a raw material charging port of the heating and stirring tank 3 is opened, and a cleaning hose is inserted into the heating and stirring tank 3. The adsorbent deposited on the bottom of the heating and stirring tank 3 may be washed away from the raw material delivery port 3E by the jetted washing water. After this cleaning operation is completed, the moisture on the inner surface of the heating and agitation tank 3 is wiped off with a waste cloth or the like. Such a cleaning operation is performed at an appropriate time according to the capacity of the heating and stirring tank 3 and the amount of adsorbent charged.

  Here, when the fine filter 15F in the fine filtration tank 15 of the filtration purification apparatus 2 is clogged, the heat and pressure resistant hose 16 is removed from the raw oil outlet 15C of the fine filtration tank 15, and instead A pressurized air supply hose 11 connected to the air compressor 9 is connected to the raw material oil outlet 15C. Further, the on-off valve 13B of the coarse filtration tank 13 on the upstream side of the fine filtration tank 15 is closed. Then, the opening / closing valve 15D for the drain port 15E of the precision filtering tank 15 is fully opened to open the opening / closing valve 15B for the raw material oil outlet 15C.

  By doing so, pressurized air is jetted from the raw material oil outlet 15C of the precision filtration tank 15 toward the precision filtration filter 15F, and the precision filtration filter 15F clogged by this pressurized air is backwashed. . Even when the coarse filter 13F in the coarse filter tank 13 is clogged, the clogging is backwashed in the same manner.

  The waste edible oil refining apparatus according to the present invention is not limited to the above-described embodiment. For example, by providing an intermediate filtration tank with an intermediate filter built in between the coarse filtration tank 13 and the fine filtration tank 15 of the filter purification apparatus 2, the impurity components contained in the waste cooking oil OIL are divided into three stages. It may be filtered. In this case, the coarseness of the intermediate filter in the intermediate filtration tank can be, for example, around 20 μm, and the coarseness of the coarse filter 13F in the coarse filtration tank 13 can be, for example, around 50 μm. .

  Moreover, you may provide the hot water bath which can hold | maintain the rough | crude filtering tank 13 and the fine filtering tank 15 at the temperature of 60-90 degreeC. In this case, it is possible to prevent an increase in viscosity due to a decrease in the temperature of the waste cooking oil OIL that flows through the coarse filtration tank 13 and the fine filtration tank 15 and passes through the coarse filter 13F and the fine filter 15F. The deterioration of the filtration efficiency can be prevented.

It is a schematic diagram which shows schematic structure of the waste edible oil refiner | purifier which concerns on one Embodiment of this invention, Comprising: It is a schematic diagram of the state by which the raw material oil supply hose was connected to the heating stirring tank. It is a schematic diagram of the waste edible oil refiner | purifier which concerns on one Embodiment, Comprising: It is a schematic diagram of the state by which the heater and the stirrer were connected to the heating stirring tank. It is a schematic diagram of the waste edible oil refiner | purifier which concerns on one Embodiment, Comprising: It is a schematic diagram of the state by which the pressurized air supply hose was connected to the heating stirring tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heating stirring apparatus 2 Filtration refinement apparatus 3 Heating stirring tank 3A Stirrer installation port (also used as raw material input port)
3B Heater mounting port 3C Pressurized air inlet 3D Open / close valve 3E Raw material delivery port 4 Oil recovery tank 5 Pump 6 Raw material oil supply hose 7 Stirrer 7C Rotor blade 8 Electric heater (heater)
9 Air compressor 10 Pressure regulating valve 11 Pressurized air supply hose 12 Heat-resistant / pressure-resistant hose 13 Roughing tank 13A Raw material oil inlet 13B On-off valve 13C Raw material oil outlet 13D Opening valve 13E Drain port 13F Roughing filter 14 Heat-resistant / pressure-resistant Hose 15 Precision Filtering Tank 15A Raw Material Oil Inlet 15B Open / Close Valve 15C Raw Material Oil Outlet 15D Open / Close Valve 15E Drain Port 15F Rough Filter 16 Heat / Pressure Resistant Hose 17 Oil Storage Tank

Claims (10)

  An apparatus for refining waste edible oil into an alternative fuel oil for a diesel engine, which is heated and stirred by heating and stirring waste edible oil mixed with an adsorbent, and heated and stirred by this heating and stirring apparatus A filtration purification device that filters impurities together with the adsorbent from the waste edible oil, and the heating and stirring device includes a stirrer for containing the waste edible oil mixed with the adsorbent and heating and stirring. There is a stirring tank, and at the upper part of this heating stirring tank, the raw material charging port into which the waste cooking oil and the adsorbent are charged, the heater mounting port to which the heater is mounted, and the stirring device to which the stirrer is mounted And a pressurized air introduction port through which pressurized air for sending waste cooking oil is introduced, and a raw material delivery port that is opened and closed by an on-off valve is provided at the bottom of the heating and stirring tank. Waste food, characterized by Purification equipment.   The waste edible oil refining apparatus according to claim 1, wherein the raw material charging port and the stirrer mounting port are shared, and the raw material delivery port also serves as a drain port.   The stirrer has a rotating blade that is driven to rotate inside the heating and stirring tank via a drive shaft by a motor disposed outside the heating and stirring tank, and the rotating blade is accommodated in the heating and stirring tank. The waste edible oil refining device according to claim 1 or 2, wherein the edible oil is an airfoil that generates a downward flow in the waste edible oil.   The said heater is comprised with the electric heater which has a heat resistance of at least 150 degreeC, The thermometer which measures the temperature of waste edible oil is attached to the vicinity of this electric heater. Or the waste edible oil refining apparatus according to 3;   The raw material charging port, the heater mounting port, the stirrer mounting port, and the pressurized air introduction port are configured to be hermetically sealed, and the raw material delivery port is connected to the filtration purification device via a heat-resistant / pressure-resistant hose. The waste edible oil refining apparatus according to any one of claims 2 to 4.   The filtration and purification device has a structure in which a coarse filter is built in a coarse filter tank connected to the heating and stirring device, and a fine filter is built in a fine filter tank connected to the coarse filter tank. 6. A waste edible oil refining device according to claim 1, wherein a drain port that can be opened and closed is provided at the bottom of each of the coarse filtration tank and the fine filtration tank. .   The waste edible oil purifier according to claim 6, wherein the coarse filter and the fine filter are made of metal.   The coarse filter and the fine filter are configured in a shape that can be back-washed by pressurized air introduced from a raw material outlet provided in the coarse filter tank and the fine filter tank, respectively. The waste edible oil refining device according to claim 6 or 7.   The waste edible oil refining apparatus according to any one of claims 6 to 8, further comprising a hot water bath for the coarse filtration tank and the fine filtration tank.   The waste edible oil refining apparatus according to any one of claims 1 to 10, wherein the adsorbent is activated clay or activated carbon.

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