JP2018030961A - Method for infiltrating waste food oil into woody material, infiltration device, and biomass power generation system provided therewith - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for infiltrating waste food oil into a woody material where waste food oil is mixed into a woody material fed as the fuel of biomass power generation, thus combustion efficiency can be efficiently increased, and the waste food oil can be effectively utilized, an infiltration device, and a biomass power generation system provided therewith.SOLUTION: A method for infiltrating waste food oil into a woody material comprises: a holding step where a woody material fed as the fuel of biomass power generation is held in a holding container; an infiltration step where the woody material is immersed into corroded oil or the corroded oil is scattered into the woody material in an oil tank; and an oil throwing step where the woody material infiltrated with the waste food oil is oil-thrown. Before the infiltration step or during the infiltration step, a heating step of heating the inside of the oil tank may be included as well. Further, before the infiltration step or during the infiltration step, an exhaustion step where the holding container is stored into the oil tank in a sealed state, and the inside of the oil tank is pressure-reduced or is made into a vacuum may be included as well.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a biomass power generation system that increases power generation efficiency, and relates to a method for infiltrating waste cooking oil into a wood material, a permeation device, and a biomass power generation system including the same.

  In recent years, biomass power generation technology has been developed that generates power by burning or gasifying resources generated from animals and plants such as wood resources, sewage sludge, livestock manure, and food residues. Biomass power generation has the advantage of reducing the environmental load without emitting carbon dioxide, and the advantage of being able to effectively use waste that was originally discarded, such as waste from agricultural crops and waste wood from building materials. In addition, the effective use of thinned wood left in the mountains has led to the promotion of forestry and forestry and the revitalization of mountain villages.

  However, there is a problem that the power generation efficiency of biomass power generation is lower than that of coal-fired power generation, and the power generation cost is high. The power generation efficiency of biomass power generation depends on the moisture content of the wood material that is the fuel. In order to increase the power generation efficiency, it is necessary to devise such as burning after drying, or burning after gasification, and many contrivances have been made to increase the power generation efficiency of biomass power generation. In particular, technologies related to pretreatment of resources used in biomass power generation have been developed.

  For example, Patent Document 1 discloses a water absorption drying process in which pulverized wood material is absorbed by a water absorbing material and dried, a fermentation drying process in which animal waste is mixed in the wood material and fermented, and purified gas after exhaust gas treatment by biomass power generation. A biomass fuel pretreatment method having an exhaust heat drying step of supplying to the wood material and drying to a predetermined moisture content is disclosed. According to this invention, it is said that the combustion efficiency is high and the biomass fuel having a predetermined moisture content can be efficiently produced.

  Patent Document 2 discloses a biomass pretreatment unit and a biomass-coal co-firing system that supply biomass resources to a pulverizer that crushes biomass resources. According to the present invention, it is said that biomass resources can be efficiently pulverized and burned easily.

  In recent years, it has been actively practiced to collect vegetable oil such as used tempura oil and to reuse the used cooking oil as biodiesel fuel. Biodiesel fuel is attracting social attention because it can reduce carbon dioxide emissions and can effectively use waste cooking oil, which is waste, to reduce the environmental burden. Therefore, the development of technology related to biodiesel fuel is progressing. For example, Patent Document 3 discloses a production system that can efficiently produce biodiesel fuel oil.

Japanese Patent Laying-Open No. 2015-209552 JP 2013-88033 A Japanese Patent No. 5707068

  The biomass fuel pretreatment method of Patent Literature 1 and the biomass pretreatment unit of Patent Literature 2 have the advantage that biomass resources can be dried efficiently and increase combustion efficiency. It is desirable to mix oil or the like for promoting combustion of biomass resources.

  In addition, biodiesel fuel oil (for example, Patent Document 3) that can effectively use waste cooking oil can be used in diesel vehicles and has an advantage of reducing the environmental load. However, biodiesel fuel contains impurities. If it is, there are problems such as the fuel filter being easily clogged. Therefore, it is desired that waste cooking oil be effectively used not only as biodiesel fuel oil but also in other fields.

  In view of the above-described problems, the present invention is a wood material that can efficiently increase combustion efficiency by mixing waste cooking oil with a wood material supplied as a fuel for biomass power generation, and can efficiently use the waste cooking oil. An object of the present invention is to provide a method for permeating waste cooking oil, a permeation apparatus, and a biomass power generation system including the same.

1st invention for solving the said subject is the holding process which hold | maintains the wooden material supplied as a fuel of biomass power generation in a holding | maintenance container, the said wooden material is immersed in waste cooking oil in an oil tank, or waste cooking oil is said A method for infiltrating a wooden material into waste cooking oil, comprising: an infiltration step for spraying the wooden material; and an oil draining step for draining the wooden material infiltrated with the waste cooking oil.
2nd invention is the osmosis | permeation method as described in 1st invention, Comprising: It further has the heating process which heats the inside of the said oil tank before the said osmosis | permeation process.
3rd invention is the osmosis | permeation method as described in 1st or 2nd invention, Comprising: The said holding | maintenance container is sealed and accommodated in the said oil tank before the said osmosis | permeation process, The inside of the said oil tank is pressure-reduced. Or it has the exhaust process for making it vacuum, It is characterized by the above-mentioned.
4th invention is a osmosis | permeation method as described in any one of 1st-3rd invention, Comprising: The refinement | purification process which refine | purifies the waste cooking oil which immersed the said wooden material in the said oil tank, or was spread | dispersed on the said wooden material further It is characterized by having.
According to a fifth aspect of the present invention, there is a holding container for holding a wood material supplied as a fuel for biomass power generation, an oil tank in which the wood material is immersed in waste cooking oil or the waste cooking oil is sprayed on the wood material, and the holding container Is a permeating device for waste cooking oil of a wood material, comprising: transport means for transporting the oil into the oil tank; and oil draining means for draining the wood material.
According to a sixth aspect of the present invention, there is provided a supply means for supplying a wood material, an infiltration device according to the fifth invention, a combustion means for burning the wood material infiltrated into the waste cooking oil, and a thermal energy of the combustion means. A biomass power generation system comprising: power generation means for converting to electricity.

  The method for infiltrating waste edible oil into the woody material of the present invention, the infiltration device, and the biomass power generation system equipped with the same, mix the waste edible oil with the woody material supplied as fuel for biomass power generation, and thus increase the combustion efficiency efficiently. Can do. In addition, by using waste cooking oil, it is possible to reduce the environmental load and effectively use it as a resource.

It is a schematic diagram which shows schematic structure of the osmosis | permeation apparatus which is one Embodiment of this invention. It is a schematic diagram which shows schematic structure of the osmosis | permeation apparatus which is other embodiment of this invention. It is explanatory drawing which shows the flow of the osmosis | permeation method of the waste cooking oil to the timber which is one Embodiment of this invention. It is a schematic diagram which shows the structure of the biomass electric power generation system provided with the osmosis | permeation apparatus which is one Embodiment of this invention.

  Embodiments of the present invention (hereinafter referred to as “examples”) will be described below with reference to the drawings. In the following drawings, common parts are denoted by the same reference numerals, and duplicate descriptions for the same reference numerals are omitted. In the following embodiments, the case where the wood material is wood will be described. However, the present invention is not limited to wood, and can be applied to any wood material (wood, palm coconut shell, paper, etc.).

[Configuration of Osmosis Device 20]
First, the structure of the infiltration device 20 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1 and 2 are schematic views showing a schematic configuration of a permeation apparatus that permeates wood into waste cooking oil.

  The infiltration device 20 includes a holding container 21 that holds the wood 10 supplied as a fuel for biomass power generation, an oil tank 22 in which the wood 10 is immersed in the waste cooking oil 24 or the waste cooking oil 24 is sprayed on the wood 10, and the holding container 21. Is constituted by a conveying means 23 for conveying the oil into the oil tank 22 and an oil draining means for draining the wood 10.

  The holding container 21 is a container that holds a certain amount of wood 10 supplied as a fuel for biomass power generation. The holding container 21 is, for example, a box-shaped container made of a metal net. Since the timber 10 is crushed into chips (for example, 5 mm to 500 mm), it is necessary to be configured with a mesh having a size such that it does not leak.

  Further, the upper surface of the holding container 21 is a lid that opens and closes, and is preferably configured to close after the wood 10 is supplied. With this configuration, when the wood 10 is immersed in the waste cooking oil 24, the wood 10 can be prevented from floating in the waste cooking oil 24 and overflowing from the holding container 21.

  The bottom surface of the holding container 21 can be configured to open and close in the same manner as the top surface. Thereby, the bottom surface of the holding container 21 is easily opened when supplying the wood 10 infiltrated with the waste cooking oil 24 to a supply machine (a conveyor or the like) for supplying the wood 10 to a biomass power generation boiler. Wood 10 can be supplied. The configuration of the holding container 21 is not limited to the above configuration, and may be a configuration in which one of the top surface or the bottom surface is opened or closed, or a configuration in which a side surface is opened or closed. In any configuration, it is preferable that all surfaces of the holding container 21 are closed while the holding container 21 is immersed in or dispersed in the waste cooking oil 24.

  For example, edible oil used for tempura oil is used as the waste edible oil 24 supplied into the oil tank 22. The waste cooking oil 24 may use oil refined by a refining device (not shown) before being supplied into the oil tank 22. Further, the waste cooking oil 24 is regularly supplied into the oil tank 22 by a fixed amount by a waste cooking oil supply device (not shown).

FIG. 1A shows an example in which a certain amount of waste cooking oil 24 is stored in the oil tank 22. In this example, the holding container 21 is conveyed into the oil tank 22 by the conveying means 23 (see FIG. 4), and then the holding container 21 is further lowered into the waste cooking oil 24 in the oil tank 22 by the conveying means 23 for a certain time ( For example, the wood 10 is immersed for 2 to 3 minutes. The holding container 21 may be immersed in the waste cooking oil 24 once or plural times. Further, as shown in FIG. 1 (A), an exhaust means (hereinafter referred to as a vacuum pump) for sealing the inside of the oil tank 22 and bringing it into a reduced pressure or vacuum state may be connected via a pipe 201. Thereby, the inside of the oil tank 22 is decompressed, for example, 680 to 730 mmH.
The holding container 21 can be immersed in the waste cooking oil 24 with a vacuum of g. By depressurizing the inside of the oil tank 22, the moisture contained in the wood 10 is more likely to evaporate and easier to dry than the atmospheric pressure state even at a low temperature. Thereby, it becomes easy to permeate the waste cooking oil 24 into the wood 10. In addition, the structure which connects the oil tank 22 with a vacuum pump is not an essential structure in this invention, but a structure which can be attached in order to accelerate | stimulate drying. Moreover, it is good also as a structure which installs a dry container (not shown) separately from the oil tank 22, and connects the container and a vacuum pump.

  In addition, the vacuum pump which makes the oil tank 22 into a pressure-reduced state may use the vacuum pump 61 used for the condenser 60 of the biomass power generation system 100 mentioned later via the pipe 201, and the biomass power generation system 100 and May use another vacuum pump device (not shown). In the present embodiment, the vacuum pump 61 used for the condenser 60 of the biomass power generation system 100 is used.

  1B is an example in which a certain amount of waste cooking oil 24 is stored in the oil tank 22 as in FIG. 1A, and the holding container 21 is lowered by the conveying means 23 in the waste cooking oil 24. FIG. Then, the wood 10 is immersed for a certain time (for example, 2 to 3 minutes). The difference from the configuration shown in FIG. 1A is that a heating means for heating the inside of the oil tank 22 is further provided. In the example shown in FIG. 1B, a heating device 26 that takes in a heating tube is installed inside the oil tank 22, and steam is used as the heating means. The heating means is not limited to the method using water vapor, and may be electricity or any heating method. Moreover, you may install the heating apparatus 26 not the inner side of the oil tank 22, but the outer side. The inside of the oil tank 22 is heated to, for example, about 70 ° C. to 90 ° C. by the heating device 26. By heating the inside of the oil tank 22, the moisture contained in the wood 10 is more likely to evaporate than the normal temperature state, which makes it easier to dry. As shown in FIG. 1 (B), the vacuum pump and the oil tank 22 may be further connected. By setting it as such a structure, the wood 10 can be dried more efficiently in a short time, and it becomes easy to make the waste cooking oil 24 osmose | permeate the wood 10. FIG. In addition, the structure which installs the heating apparatus 26 in the oil tank 22 is not necessarily essential in this invention like a vacuum pump, and is a structure which can be attached in order to accelerate | stimulate drying. Moreover, it is good also as a structure which installs a drying means separately from the oil tank 22, and installs a heating means in the container.

  Note that steam generated from the boiler 30 of the biomass power generation system 100 described later may be used for the heating device 26 that heats the oil tank 22, or a heating device different from the biomass power generation system 100 may be used. . In this embodiment, steam generated from the boiler 30 of the biomass power generation system 100 is used.

  Moreover, the waste cooking oil 24 used in the oil tank 22 of FIGS. 1A and 1B is collected every certain time or every certain number of times, and foreign matter (moisture, sap, fine fragments) flowing out from the wood 10 into the waste cooking oil 24. , Sand, etc.) may be removed and sent to a purification apparatus for purification (not shown). The waste cooking oil 24 that has been refined and can be used again is supplied into the oil tank 22 by a waste cooking oil supply device. By using the refined waste cooking oil 24, the waste cooking oil 24 can easily penetrate into the wood 10.

  2 (A) and 2 (B) are examples of an oil tank 22 in which waste cooking oil 24 is sprayed, and the holding container 21 is transported into the oil tank 22 by the transport means 23 (see FIG. 4), and a certain time (for example, 2 to 3 minutes), the waste cooking oil 24 is sprayed on the wood 10 in the holding container 21 by the waste cooking oil supply pipe 25. The number of times the waste cooking oil 24 is sprayed may be once or plural times. The dispersed waste cooking oil 24 is recovered by the recovery device 203 and sent to a refining device for refining the waste cooking oil 24. At this time, the sprayed waste cooking oil 24 may be collected after being stored in the oil tank 22 by a certain amount. Moreover, the waste cooking oil 24 refined by the refining device may be again sprayed on the wood 10 in the holding container 21 by the waste cooking oil supply pipe 25.

  As shown in FIG. 2A, as in FIG. 1A, a vacuum pump for sealing the inside of the oil tank 22 and reducing the pressure or vacuum may be connected. Further, as shown in FIG. 2 (B), a heating device 26 for heating the inside of the oil tank 22 may be installed as in FIG. 1 (B). It is good also as a structure connected to. 2A and 2B, the configuration for connecting the oil bath 22 to the vacuum pump and the configuration for installing the heating device 26 are not essential in the present invention, and promote the drying of the wood 10. It is a configuration that can be attached to facilitate the penetration of the waste cooking oil 24.

  As described above, the transport means 23 transports the holding container 21 to the inside of the oil tank 22, and when the waste cooking oil 24 is stored in the oil tank 22, the transport means 23 further transports the holding container 21 to dispose the waste in the oil tank 22. Immerse in cooking oil 24. After the waste cooking oil 24 is infiltrated into the wood 10 of the holding container 2, the feeder 14 for transporting the holding container 21 to the outside of the oil tank 22 and supplying the wood 10 to the biomass power generation boiler (see FIG. 4). The holding container 21 is conveyed so that the wood 10 can be placed on the container. For example, a hoist crane can be used as the transport means 23, but any device may be used as long as the device can transport the holding container 21 in the vertical direction, the horizontal direction, or both directions. When the waste cooking oil 24 is stored in the oil tank 22, the transport means 23 can use a device that transports the holding container 21 only in the vertical direction, and the waste cooking oil 24 is dispersed. In the case of the oil tank 22, it is also possible to use a device that conveys the holding container 21 only in the horizontal direction.

  The oil draining means (not shown) vibrates the holding container 21 in the vertical direction, the horizontal direction, or both directions, and drains the wood 10 into which the waste cooking oil 24 has permeated. When the waste cooking oil 24 is stored in the oil tank 22, it is configured to vibrate for a certain time (for example, 30 seconds) after the holding container 21 is conveyed on the oil surface. Moreover, in the case of the oil tank 22 in which the waste cooking oil 24 is sprayed, it is configured to vibrate for a certain time after the spraying is finished. Any device may be used as the oil draining device as long as it can drain the oil by vibrating the holding container 21, and a device integrated with the transport device 23 (for example, a hoist crane) may be used. .

[Method of Permeating Waste Cooking Oil 24 into Wood 10]
Next, a method for penetrating the waste cooking oil 24 into the wood 10 according to an embodiment of the present invention will be described with reference to FIG. FIG. 3 is an explanatory diagram showing a flow of a method for infiltrating waste cooking oil into wood according to an embodiment of the present invention. The process described here is a fuel (wood 10) pretreatment process performed to increase the power generation efficiency of biomass power generation.

  First, the crushed wood 10 supplied as biomass fuel is held in the holding container 21 (S11). At this time, the upper surface, the lower surface, or the side surface of the holding container 10 is opened, and a certain amount of wood 10 is charged. The method of input may be an apparatus that is automatically input from the stocker of the wood 10 or may be manual. Moreover, you may include the drying process which dries the wood 10 before this holding process.

  In the next infiltration step, the wood 10 is immersed in the waste cooking oil 24 in the oil tank 22 or the waste cooking oil 24 is sprayed on the wood 10 (S12). When the above-described oil tank 22 is used and the waste cooking oil 24 is stored in the oil tank 22, the holding container 21 is immersed in the waste cooking oil 24 for a certain time (for example, 2 to 3 minutes). Further, in the case of the oil tank 22 in which the waste cooking oil 24 is sprayed, the waste cooking oil 24 is sprayed on the wood 10 in the holding container 21 by the waste cooking oil supply pipe 25 for a certain time (for example, 2 to 3 minutes).

  Moreover, you may have further the heating process which heats the inside of the oil tank 22 in this permeation process or before a process (S13). The heating step is a step of heating the inside of the oil tank 22 to about 70 ° C. to 90 ° C. by the heating device 26 described above. By heating the inside of the oil tank 22, the moisture contained in the wood 10 is more likely to evaporate than the normal temperature state, which makes it easier to dry. Moreover, it becomes easy to make the waste cooking oil 24 osmose | permeate the wood 10. The heating process is not necessarily an essential process in the present invention, and is a process that can be added to promote drying.

  Furthermore, an evacuation step (S14) may be included in which the inside of the oil tank 22 is sealed and the pressure is reduced or vacuumed during or before the infiltration step. The vacuum pump is exhausted to a reduced pressure or a vacuum state. Thereby, the holding container 21 can be immersed in the waste cooking oil 24 at a vacuum degree of, for example, 680 to 730 mmHg in the oil tank 22. By depressurizing the inside of the oil tank 22, the moisture contained in the wood 10 is more likely to evaporate and easier to dry than the atmospheric pressure state even at a low temperature. Note that the step of evacuating the oil tank 22 to a reduced pressure or vacuum state by a vacuum pump is not an essential step in the present invention, as in the heating step, and is a step that can be added to promote drying. The infiltration method of the present invention may include both the heating step (S13) and the exhausting step (S14), may include only one, or may not include both.

  Next, the wood 10 infiltrated with the waste cooking oil 24 is drained (S15). The oil removal of the wood 10 is performed using the above-described oil removal means (device). By draining the oil, it becomes easy to transport the wood 10 and only the wood 10 can be placed on a feeder (such as a conveyor) for supplying the wood 10 to the biomass power generation boiler. It can be prevented from being covered with oil. In particular, when the waste cooking oil 24 is stored in the oil tank 22, if the wood 10 is not drained, the waste cooking oil 24 in the oil tank 22 is reduced immediately, and the effective utilization rate of the waste cooking oil 24 is impaired. Therefore, this oil draining process is necessary.

  Furthermore, you may refine | purify the waste cooking oil 24 used with the oil tank 22 with the above-mentioned refinement | purification apparatus (S16). The waste cooking oil 24 used in the oil tank 22 is collected in the refining device by the collecting device 203 every fixed time or every fixed number of times. The waste cooking oil 24 that has been refined and can be used again is supplied into the oil tank 22 by a waste cooking oil supply device. In the present invention, this refining step is not necessarily a necessary step, but it is preferable to include this step for effective use of resources by reusing the refined waste cooking oil 24.

  As described above, the waste cooking oil 24 is infiltrated into the wood 10, and this wood 10 is supplied to the boiler as a fuel for biomass power generation. By using the wood 10 into which the waste cooking oil 24 penetrates, it becomes easier to burn than using ordinary wood, and the power generation efficiency of biomass power generation can be increased.

[Configuration of Biomass Power Generation System 100]
Next, a biomass power generation system 100 including the infiltration device 20 of the present invention will be described with reference to FIG. FIG. 4 is a schematic diagram illustrating a configuration of a biomass power generation system including the infiltration device 20 of the present embodiment. The configuration of the biomass power generation system 100 is the same as that of a known biomass power generation system except for the permeation device 20. The biomass power generation system 100 mainly includes a supply device 15 that supplies the wood 10, a permeation device 20, a boiler 30 that sends steam generated by burning the wood 10, and a generator 50 that generates power using the steam. Basic configuration.

  As shown in FIG. 4, the supply device 15 for supplying the wood 10 stores a chip silo 11 for storing crushed chip-shaped wood, a wood (woody chip) supply conveyor 12, and the wood 10. It is comprised from the stocker 13 supplied every predetermined time, and the fixed_quantity | feed_rate supply machine (conveyor) 14 of wood (woody chip). The infiltration device 20 has the above-described configuration, and after a certain amount of wood 10 is supplied from the stocker 13, the wood 10 is infiltrated into the waste cooking oil 24, and the wood 10 is supplied to the fixed amount feeder (conveyor) 14.

  The boiler 30 is supplied with wood 10 and air for burning the wood 10. The wood 10 is burned by a heating device (for example, a heating burner), and the boiler 30 is in a high temperature state. Moreover, the water (boiler feed water) supplied to the boiler 30 from the feed water pump is heated in a high temperature state to become high-pressure steam. The high-pressure steam is sent to the steam turbine 40, the steam turbine 40 is rotated, and power is generated by the generator 50. Thereafter, the steam is cooled by the condenser 60 and returned to the water, and is sent to the boiler 30 again. Further, the ash generated by the combustion in the boiler 30 is removed by the dust collector 70, and the combustion gas generated by the combustion is discharged through the chimney 80 by the blower.

  A pipe 201 (vacuum degassing vent line) may be attached to the vacuum pump 61 used in the condenser 60 and used in the oil tank 22 of the infiltration device 20. Thereby, the inside of the oil tank 22 can be made into a pressure-reduced state, the water | moisture content contained in the timber 10 is evaporated also at normal temperature, and becomes easy to dry. Further, by using the vacuum pump 61 in the biomass power generation system 100, there is an advantage that it is not necessary to newly install a vacuum pump and no extra cost is required.

  Further, the heated high-temperature steam generated from the boiler 30 may be sent to the oil tank 22 of the infiltration device 20 by attaching a pipe 202 (heating steam line) before sending it to the turbine 40. Thereby, since the temperature in the oil tank 22 can be raised, the moisture contained in the wood 10 can be easily evaporated and dried. Further, in this case as well as the vacuum pump, by using the steam generated from the boiler 30 in the biomass power generation system 100, it is not necessary to newly install a heating device, and the cost can be reduced.

  As described above, since the waste edible oil 24 infiltration method 20 and the osmosis device 20 of the present invention penetrate the waste edible oil 24 into the wood 10, it becomes easier to burn than the conventional wood and efficiently. Combustion efficiency can be increased. Moreover, by using the waste cooking oil 24, an environmental load can be reduced and it can utilize effectively as a resource.

  Moreover, the pipe 201 is attached to the vacuum pump 61 used for the condenser 60 in the biomass power generation system 100 of the present invention, and the new vacuum pump 61 is not installed by using it for the oil tank 22 of the infiltration device 20. Furthermore, the inside of the oil tank 22 can be in a reduced pressure state. Thereby, the wood 10 in the oil tank 22 is more likely to evaporate moisture contained in the wood 10 than at atmospheric pressure even at low temperatures, and the wood can be efficiently dried and permeated into the oil.

  Furthermore, the inside of the oil tank 22 can be heated without installing a new heating apparatus by using the vapor | steam generated from the boiler 30 in the biomass power generation system 100 of this invention for the heating apparatus of the osmosis | permeation apparatus 20. FIG. Thereby, the moisture contained in the wood 10 is more easily evaporated than in the normal temperature state, and the wood can be efficiently dried and permeated into the oil.

  In the above-described method for infiltrating waste cooking oil into wood, a permeation apparatus, and a biomass power generation system including the same, wood has been described as an example of wood, but the present invention is not limited to wood, and any wood material (wood, Palm coconut shell, paper, etc.). Furthermore, the present invention is not limited to wood materials, and can be similarly applied to all plant materials (rice straw, rice husks, etc.). Moreover, the structure of this invention can be changed suitably in the range which does not deviate from the meaning of invention.

10 Wood 11 Chip Silo 12 Wood Supply Conveyor 13 Stocker 14 Fixed Quantity Feeder (Conveyor)
DESCRIPTION OF SYMBOLS 15 Supply apparatus 20 Infiltration apparatus 21 Holding container 22 Oil tank 23 Conveying means 24 Waste cooking oil 25 Waste cooking oil supply piping 26 Heating apparatus 30 Boiler 40 Steam turbine 50 Generator 60 Condenser 61 Vacuum pump 70 Dust collector 80 Chimney 100 Biomass power generation system 201 Pipe (Vacuum degassing vent line)
202 Pipe (heated steam line)
203 Recovery device

A first invention for solving the above problems includes a holding step of holding a wood material supplied as a fuel for a biomass power generation system in a holding container, the holding container being hermetically sealed in an oil tank, Evacuating step for reducing the pressure at 680 to 730 mmHg, heating step for heating the oil tank to 90 ° C. or less, immersing the wooden material in waste cooking oil in the oil tank, or spraying the waste cooking oil on the wooden material And a method for infiltrating the wood material into the waste cooking oil, the method comprising: an oil draining step for draining the wood material infiltrated with the waste cooking oil.
2nd invention is the osmosis | permeation method as described in 1st invention, Comprising: It further has the refinement | purification process which refine | purifies the waste cooking oil which immersed the said wood material in the said oil tank, or was spread | dispersed on the said wood material. To do.
According to a third aspect of the present invention, there is provided a holding container for holding a wood material supplied as fuel for a biomass power generation system , an oil tank in which the wood material is immersed in waste cooking oil or the waste cooking oil is sprayed on the wood material, and the holding Transport means for transporting the container into the oil tank, exhaust means for sealing the oil tank and reducing the pressure at a vacuum of 680 to 730 mmHg, heating means for heating the oil tank to 90 ° C. or less, and the wood An apparatus for infiltrating waste cooking oil into a wooden material, comprising: an oil draining means for draining the material.
According to a fourth aspect of the present invention, there is provided supply means for supplying a wood material, an infiltration device according to the third invention, a combustion means for burning the wood material infiltrated with the waste cooking oil, and thermal energy of the combustion means. a power generating means for converting into an electric, a biomass power generation system comprising: a.

FIG. 1A shows an example in which a certain amount of waste cooking oil 24 is stored in the oil tank 22. In this example, the holding container 21 is conveyed into the oil tank 22 by the conveying means 23 (see FIG. 4), and then the holding container 21 is further lowered into the waste cooking oil 24 in the oil tank 22 by the conveying means 23 for a certain time ( For example, the wood 10 is immersed for 2 to 3 minutes. The holding container 21 may be immersed in the waste cooking oil 24 once or plural times. Further, as shown in FIG. 1 (A), an exhaust means (hereinafter referred to as a vacuum pump) for sealing the inside of the oil tank 22 and bringing it into a reduced pressure or vacuum state may be connected via a pipe 201. Thereby, the inside of the oil tank 22 is decompressed, for example, 680 to 730 mmH.
The holding container 21 can be immersed in the waste cooking oil 24 with a vacuum of g. By depressurizing the inside of the oil tank 22, the moisture contained in the wood 10 is more likely to evaporate and easier to dry than the atmospheric pressure state even at a low temperature. Thereby, it becomes easy to permeate the waste cooking oil 24 into the wood 10. The configuration of the oil tank 22 is connected to a vacuum pump is a configurable attachment in order to facilitate Drying. Moreover, it is good also as a structure which installs a dry container (not shown) separately from the oil tank 22, and connects the container and a vacuum pump.

1B is an example in which a certain amount of waste cooking oil 24 is stored in the oil tank 22 as in FIG. 1A, and the holding container 21 is lowered by the conveying means 23 in the waste cooking oil 24. FIG. Then, the wood 10 is immersed for a certain time (for example, 2 to 3 minutes). The difference from the configuration shown in FIG. 1A is that a heating means for heating the inside of the oil tank 22 is further provided. In the example shown in FIG. 1B, a heating device 26 that takes in a heating tube is installed inside the oil tank 22, and steam is used as the heating means. The heating means is not limited to the method using water vapor, and may be electricity or any heating method. Moreover, you may install the heating apparatus 26 not the inner side of the oil tank 22, but the outer side. The inside of the oil tank 22 is heated to, for example, about 70 ° C. to 90 ° C. by the heating device 26. By heating the inside of the oil tank 22, the moisture contained in the wood 10 is more likely to evaporate than the normal temperature state, which makes it easier to dry. As shown in FIG. 1 (B), the vacuum pump and the oil tank 22 may be further connected. By setting it as such a structure, the wood 10 can be dried more efficiently in a short time, and it becomes easy to make the waste cooking oil 24 osmose | permeate the wood 10. FIG. Similarly to the vacuum pump, configured for installing the heating device 26 to the oil tank 22 is configurable attachment in order to facilitate Drying. Moreover, it is good also as a structure which installs a drying means separately from the oil tank 22, and installs a heating means in the container.

As shown in FIG. 2A, as in FIG. 1A, a vacuum pump for sealing the inside of the oil tank 22 and reducing the pressure or vacuum may be connected. Further, as shown in FIG. 2 (B), a heating device 26 for heating the inside of the oil tank 22 may be installed as in FIG. 1 (B). It is good also as a structure connected to. FIG. 2 (A), the even oil bath 22 (B), configured to install the configuration and the heating device 26 the oil tank 22 is connected to a vacuum pump, to promote drying of the wood 10, easily infiltrated waste cooking oil 24 This is a configuration that can be attached.

Moreover, you may have further the heating process which heats the inside of the oil tank 22 in this permeation process or before a process (S13). The heating step is a step of heating the inside of the oil tank 22 to about 70 ° C. to 90 ° C. by the heating device 26 described above. By heating the inside of the oil tank 22, the moisture contained in the wood 10 is more likely to evaporate than the normal temperature state, which makes it easier to dry. Moreover, it becomes easy to make the waste cooking oil 24 osmose | permeate the wood 10. The heating step is a step that can be added to promote the Drying.

Furthermore, an evacuation step (S14) may be included in which the inside of the oil tank 22 is sealed and the pressure is reduced or vacuumed during or before the infiltration step. The vacuum pump is exhausted to a reduced pressure or a vacuum state. Thereby, the holding container 21 can be immersed in the waste cooking oil 24 at a vacuum degree of, for example, 680 to 730 mmHg in the oil tank 22. By depressurizing the inside of the oil tank 22, the moisture contained in the wood 10 is more likely to evaporate and easier to dry than the atmospheric pressure state even at a low temperature. The step of evacuating the oil tank 22 to the reduced pressure or vacuum state by the vacuum pump is a step that can be added to promote the Drying.

A first invention for solving the above problems includes a holding step of holding a wood material supplied as a fuel for a biomass power generation system in a holding container, the holding container being hermetically sealed in an oil tank, Evacuating step for reducing the pressure at 680 to 730 mmHg, heating step for heating the inside of the oil tank to 70 ° C. to 90 ° C. , immersing the wood material in waste cooking oil in the oil tank, or waste waste oil in the wood material A method for infiltrating the woody material into the waste cooking oil, comprising: a permeation step for spraying the woody material; and an oil draining step for draining the wooden material infiltrated with the waste cooking oil.
2nd invention is the osmosis | permeation method as described in 1st invention, Comprising: It further has the refinement | purification process which refine | purifies the waste cooking oil which immersed the said wood material in the said oil tank, or was spread | dispersed on the said wood material. To do.
According to a third aspect of the present invention, there is provided a holding container for holding a wood material supplied as fuel for a biomass power generation system, an oil tank in which the wood material is immersed in waste cooking oil or the waste cooking oil is sprayed on the wood material, and the holding Transport means for transporting the container into the oil tank, exhaust means for sealing the oil tank and depressurizing at a vacuum of 680 to 730 mmHg, heating means for heating the oil tank to 70 ° C. to 90 ° C. , An apparatus for permeating waste cooking oil into a wooden material, comprising: an oil draining means for draining the wooden material.
According to a fourth aspect of the present invention, there is provided supply means for supplying a wood material, an infiltration device according to the third invention, a combustion means for burning the wood material infiltrated with the waste cooking oil, and thermal energy of the combustion means. A biomass power generation system comprising: power generation means for converting to electricity.

Claims (6)

A holding step of holding a wood material supplied as a fuel for biomass power generation in a holding container;
An infiltration step of immersing the wooden material in waste cooking oil in an oil tank, or spraying the waste cooking oil on the wooden material;
An oil draining process for draining the wood material infiltrated with the waste cooking oil;
A method for infiltrating waste cooking oil into a wooden material, characterized by comprising:   The method for infiltrating waste cooking oil into a woody material according to claim 1, further comprising a heating step of heating the inside of the oil tank before or during the infiltration step.   The said holding | maintenance container is sealed and accommodated in the said oil tank before the said osmosis | permeation process, and also has the exhaust_gas | exhaustion process for evacuating the inside of the said oil tank, The Claim 1 or 2 characterized by the above-mentioned. The method of penetrating waste cooking oil into the woody material described.   The waste edible oil to the woody material according to any one of claims 1 to 3, further comprising a refining step of refining the waste edible oil immersed in the oil material or sprayed on the wood material in the oil tank. Penetration method. A holding container for holding a wood material supplied as a fuel for biomass power generation;
An oil tank in which the wooden material is immersed in waste cooking oil or the waste cooking oil is sprayed on the wooden material;
Conveying means for conveying the holding container into the oil tank;
An oil draining means for draining the wooden material;
An apparatus for infiltrating waste cooking oil into a wooden material, comprising: Supply means for supplying wood material;
An infiltration device according to claim 5;
Combustion means for burning the wood material permeated into the waste cooking oil;
Power generation means for converting thermal energy of the combustion means into electricity;
A biomass power generation system comprising: