WO2022025108A1 - Procédé de fabrication d'une planche en bois - Google Patents

Procédé de fabrication d'une planche en bois Download PDF

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Publication number
WO2022025108A1
WO2022025108A1 PCT/JP2021/027877 JP2021027877W WO2022025108A1 WO 2022025108 A1 WO2022025108 A1 WO 2022025108A1 JP 2021027877 W JP2021027877 W JP 2021027877W WO 2022025108 A1 WO2022025108 A1 WO 2022025108A1
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Prior art keywords
palm
thin plates
treatment
sugar solution
biogas
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PCT/JP2021/027877
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English (en)
Japanese (ja)
Inventor
茂樹 内藤
俊樹 田村
鉄平 朝田
達司 大野
雅治 山下
和也 本村
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パナソニック株式会社
株式会社Ihi
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Priority to JP2022539525A priority Critical patent/JP7545481B2/ja
Publication of WO2022025108A1 publication Critical patent/WO2022025108A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • This disclosure generally relates to a method for manufacturing a wood board, and more particularly to a method for manufacturing a wood board using a palm family plant.
  • Patent Document 1 discloses a method for joining oil palm thin plates.
  • This oil palm thin plate joining method includes a thin plate step, a thin plate drying step, a laminating step, a heating step, a pressing step, and a fixing step.
  • the trunk of an oil palm having a predetermined length is rotated in the circumferential direction and peeled from the outer circumference to a predetermined thickness by a rotary race to form a plurality of thin plates.
  • the thin plate drying step the thin plate is dried.
  • the laminating step a plurality of thin plates dried in the thin plate drying step are laminated in a predetermined state.
  • the heating step the thin plates laminated after the laminating step are heated to raise the temperature.
  • the pressing step a compressive force in a direction perpendicular to the surface of the thin plate is applied to the laminated thin plates heated by the heating step.
  • the fixing step after pressing for a predetermined time in the pressing step, the temperature supplied in the heating step is lowered. Through these steps, laminated plywood is obtained.
  • the purpose of the present disclosure is to provide a method for manufacturing a wood board capable of manufacturing a wood board by effectively utilizing waste materials.
  • the method for manufacturing a wood board is a method for manufacturing a wood board using a palm family plant.
  • the method for producing a wood board includes a cutting step, a juice squeezing step, a methane fermentation step, a conversion step, an impregnation step, a thin plate drying step, and a laminated bonding step.
  • the cutting step is a step of cutting the palm family plant to obtain a plurality of palm thin plates and waste materials.
  • the juice squeezing step is a step of squeezing a sugar solution from the waste material.
  • the methane fermentation step is a step of methane fermentation treatment of the sugar solution to obtain biogas.
  • the conversion step is a step of converting the biogas into secondary energy.
  • the impregnation step is a step of impregnating the plurality of palm thin plates with a polyvalent carboxylic acid to obtain a plurality of catalyst-impregnated thin plates.
  • the thin plate drying step is a step of obtaining a plurality of dried thin plates by drying the plurality of catalyst-impregnated thin plates using the secondary energy.
  • the laminating and adhering step is a step of heating and pressurizing the plurality of dry thin plates by using the secondary energy to laminate and bond the plurality of dry thin plates.
  • the method for manufacturing a wood board is a method for manufacturing a wood board using a palm family plant.
  • the method for producing a wood board includes a crushing step, a squeezing step, a methane fermentation step, a conversion step, a drying step, a compression step, and an bonding step.
  • the crushing step is a step of crushing the palm family plant to obtain a crushed palm product and a waste material.
  • the juice squeezing step is a step of squeezing a sugar solution from the waste material.
  • the methane fermentation step is a step of methane fermentation treatment of the sugar solution to obtain biogas.
  • the conversion step is a step of converting the biogas into secondary energy.
  • the drying step is a step of obtaining a dry pulverized product by drying the coconut crushed product using the secondary energy.
  • the compression step is a step of compressing the dry pulverized product to obtain a compressed product using the secondary energy.
  • the bonding step is a step of steaming and defibrating the compressed material, drying the wood fiber, adding an adhesive to the wood fiber, forming the wood fiber, and hot-pressing the fiber.
  • FIG. 1 is a flowchart showing a method for manufacturing a wooden board according to the first embodiment.
  • FIG. 2 is a flowchart showing a method for manufacturing a wooden board according to a second embodiment.
  • FIG. 3 is a flowchart showing a method of manufacturing a wooden board according to a third embodiment.
  • FIG. 4 is a flowchart showing a method for manufacturing a wooden board according to a fourth embodiment.
  • FIG. 5A is a schematic perspective view showing how the palm trunk is cut.
  • FIG. 5B is a schematic perspective view showing a state in which a plurality of dry thin plates are laminated.
  • FIG. 5C is a schematic perspective view showing a wooden board.
  • the manufacturing methods of the wood boards X33 and X38 according to the present embodiment are roughly classified into a preparation process, an energy conversion process, and a plate materialization process.
  • the wood board X33 is not particularly limited, and examples thereof include plywood and veneer laminated material (LVL).
  • the wood board X38 is not particularly limited, and examples thereof include fiberboards such as MDF.
  • the preparation process is a process of dividing a palm plant as a raw material into a plurality of palm thin plates X21 or palm crushed products X23 and waste materials X22. After the preparatory process, it branches into two processes, an energy conversion process and a plate materialization process.
  • the energy conversion process is a process of energy conversion using waste material X22.
  • the plate materialization process is a process of plate materialization using a plurality of palm thin plates X21 or palm crushed products X23. Then, the energy obtained by the energy conversion process is used in the plate materialization process to manufacture the wood boards X33 and X38. In this way, using palmaceous plants as raw materials, on the one hand, energy is extracted, and on the other hand, wood boards X33 and X38 are produced. The extracted energy is used for manufacturing the wood boards X33 and X38.
  • the wood boards X33 and X38 can be manufactured by effectively utilizing the waste material X22. That is, at least a part of the energy required for manufacturing the wood boards X33 and X38 can be covered by the energy (secondary energy) obtained from the waste wood X22 of the palm family which is the raw material of the wood boards X33 and X38.
  • the preparation process is a process of dividing a palm plant (mainly an oil palm trunk (palm trunk X1)) as a raw material into a plurality of palm thin plates X21 and waste material X22.
  • the preparation process includes an aging process and a cutting process. After the preparatory process, it branches into two processes, an energy conversion process and a plate materialization process.
  • the aging process S1 is performed. Specifically, the palm stem X1 which is a raw material is aged by storing it for a certain period of time (aging period). As is well known, palm stem X1 contains a high concentration of sugar solution in the sap, but it is known that the concentration of the sugar solution gradually increases by storing it after logging, and the concentration of the sugar solution is maximized after a certain period of time. Has been done. That is, the palm stem X1 immediately after logging has the highest sugar solution concentration after a certain aging period. In the aging step, the palm stem X1 is aged so that the sugar solution concentration is high, and the aged palm stem X2 is obtained. In this embodiment, the aging step may not be necessary.
  • the palm trunk X1 is cut to a predetermined length, and then the cutting process S2 is performed.
  • the cutting process S2 is not particularly limited, and examples thereof include rotary processing and slicer processing.
  • the palm trunk X1 is cut to a predetermined length (see FIG. 5A), and a plurality of palm thin plates X21 and waste material X22 are obtained from the palm trunk X1. That is, a part of the palm trunk X1 becomes a plurality of palm thin plates X21, and the rest unsuitable for the palm thin plates X21 becomes waste material X22.
  • the palm thin plate X21 is used in the plate materialization process and is a raw material for the wood board X33.
  • the waste material X22 is used in the energy conversion process and becomes an energy source.
  • a palm stem X1 having a predetermined length (aged palm stem X2 in this embodiment) is rotated in the circumferential direction and peeled from the outer periphery to a predetermined thickness with a rotary race knife 100.
  • the palm trunk X1 has, for example, a log shape having a diameter of 30 to 60 cm and a height of about 10 m.
  • the palm thin plate X21 has a rectangular shape, but the shape is not particularly limited.
  • the waste material X22 includes, for example, a central portion and a bark portion of the palm trunk X1.
  • the process is divided into two processes, an energy conversion process and a plate materialization process, through the preparation process (aging process and cutting process).
  • the energy conversion process will be described first, and then the plate materialization process will be described.
  • the energization process is a process of energizing using the waste material X22.
  • energy such as electric power X520 and fuel pellets X48 which is a kind of solid fuel can be obtained.
  • the fuel pellets X48 and the like are energy derived from the waste material X22.
  • the energy such as the electric power X520 and the fuel pellet X48 is supplied to the plate making process. If energy still remains after being supplied to the platemaking process, the remaining energy can be used for other purposes.
  • the energy conversion process includes a juice squeezing step, a methane fermentation step, and a conversion step. Hereinafter, each step will be described.
  • the juice squeezing step is a step of squeezing the sugar liquids X7, X8, and X9 from the waste material X22. Specifically, in the juice squeezing step, chipping treatment S41, dipping treatment S42, primary rough separation treatment S43, wet mill treatment S44, secondary rough separation treatment S45, and dehydration treatment S46 are performed.
  • the chipping process S41 is performed as follows.
  • the waste material X22 is crushed into palm chips X41, which are raw material chips.
  • the maximum size of the palm chip X41 is about 2.0 to 3.0 mm. Since the palm trunk X1 (aged palm trunk X2 in this embodiment) is a woody biomass having a high water content of nearly 80%, the palm chip X41 obtained by the chipping treatment S41 is also a chip material having a high water content. be.
  • Immersion treatment S42 is performed after chipping treatment S41.
  • the palm chips X41 obtained by the chipping treatment S41 are left to stand for a certain period of time with a predetermined amount of hot water X53 added. That is, the state in which the palm chip X41 is immersed in the warm water X53 is maintained for a certain period of time (immersion time). Since the sap concentration of the palm chip X41 immediately after the addition of the hot water X53 is naturally higher than the sap concentration in the warm water X53 (0% immediately after the addition), the osmotic pressure caused by the concentration gradient of the sap causes the palm chip X41 to contain the sap concentration. The sap of the above elutes in warm water X53 that functions as diluting water. After immersion, the palm tip X42 is obtained by the immersion treatment S42.
  • the sap concentration in the warm water X53 gradually increases with the passage of time, that is, the sap in the palm chip X41 is gradually separated with the passage of time.
  • the amount of water added to the warm water X53 with respect to the palm chips X41 is, for example, about 1: 2 by weight, but it is preferable to increase the amount of water added as the sap concentration of the palm chips X41 increases. By adjusting the amount of water added in this way, more sap can be eluted in warm water X53 (diluted water).
  • normal temperature water may be used as the diluted water instead of the hot water X53.
  • the primary rough separation treatment S43 is performed.
  • the palm chip X42 obtained by the dipping treatment S42 is separated into a juice squeezed liquid and a squeezed slag X43 by using a predetermined separating device.
  • the predetermined separation device is not particularly limited, and examples thereof include a rotary screen and the like.
  • the juice squeezed liquid is a mixed liquid containing the sap (sugar liquid X7) of the palm stem X1 and water as main components, and is supplied to the methane fermentation step (methane fermentation treatment S51) as a fermentation raw material.
  • the squeezed residue X43 is a solid substance containing the sap (sugar solution) of the palm trunk X1 and wood components (mainly cellulose, hemicellulose and lignin) as main components and having a relatively high water content.
  • wet milling treatment S44 (crushing treatment) is performed after the primary rough separation treatment S43. A predetermined amount of warm water X53 is added to the squeezed residue X43, and the residue is further ground to grind it.
  • the wet mill (grinding machine) used in the wet mill treatment S44 is not particularly limited, and examples thereof include a super mass colloider (model number: MKZB-100J) manufactured by Masuyuki Sangyo Co., Ltd.
  • This wet mill comprises an annular upper grinder and a lower grinder. The upper grinding machine and the lower grinding machine face each other with a certain interval (clearance). The upper grinder and / or the lower grinder is rotatable. Further, the clearance between the upper grinding machine and the lower grinding machine can be changed within a predetermined range and at a predetermined pitch.
  • the squeezed residue X43 is introduced from above the wet mill to the portion near the center of the upper grinding machine, the squeezed residue X43 is ground between the upper grinding machine and the lower grinding machine. It is discharged as a ground product (ground palm X44) in the outer peripheral direction of the lower grinding machine.
  • the ground palm X44 is a solid-liquid mixture that is slurry-like and has good drainage, but the fiber in the wood component remains sufficiently.
  • the amount of water added to the hot water X53 with respect to the squeezed residue X43 is, for example, 1: 2 by weight.
  • the temperature of the hot water X53 is not particularly limited as long as it is a temperature equal to or lower than the boiling temperature, but a very high temperature is not preferable in consideration of energy efficiency.
  • normal temperature water may be squeezed and added to the slag X43 instead of the hot water X53.
  • the wet mill treatment S44 may be performed using a continuous vibro mill (Eura Techno Co., Ltd.).
  • the continuous vibro mill can be continuously charged and discharged without retaining the powder or granular material.
  • the secondary rough separation treatment S45 is performed.
  • the ground palm X44 obtained by the wet mill treatment S44 is separated into a juice squeezed liquid and a squeezed slag X45 by using a predetermined separating device.
  • the predetermined separation device is not particularly limited, and examples thereof include a rotary screen and the like.
  • the juice squeezed liquid is a mixed liquid containing the sap (sugar liquid X8) of the palm stem X1 and water as the main components, like the juice squeezed liquid obtained by the primary crude separation treatment S43, and is used as a fermentation raw material in the methane fermentation step ( It is supplied to the methane fermentation treatment S51).
  • the squeezed slag X45 is mainly composed of the sap (sugar sap) and the wood component of the palm trunk X1 and is still a solid having a relatively high water content, similar to the squeezed slag X43 obtained by the primary coarse separation treatment S43. It is a thing.
  • Dehydration treatment S46 is performed after the secondary rough separation treatment.
  • the liquid component (separation liquid) is dehydrated from the squeezed residue X45 to produce a dehydrated cake X46.
  • the predetermined dehydrator is not particularly limited, and examples thereof include a centrifuge, a screw press, a filter press, and the like.
  • the separation liquid is a liquid containing the above-mentioned sap (sugar liquid X9) and is supplied to the methane fermentation step (methane fermentation treatment S51) as a fermentation raw material.
  • the dehydrated cake X46 is a wood component containing cellulose, hemicellulose and lignin as main components as described above.
  • the methane fermentation step is a step of methane fermentation treatment of sugar liquids X7, X8, X9 to obtain biogas X51.
  • the sugar solution X300 (described later) may be subjected to methane fermentation treatment to obtain biogas X51.
  • primary energy generally means energy sources (coal, oil, natural gas, hydraulic power, wind power, solar heat, nuclear energy, etc.) that exist in nature and are converted and processed by humans, and are secondary energy.
  • Means energy produced by converting primary energy such as electric power, city gas, and gasoline.
  • the biogas X51 is referred to as primary energy
  • the energy produced by converting the biogas X51 is referred to as secondary energy.
  • the methane fermentation treatment S51 is performed as follows.
  • the juice obtained by the above-mentioned primary crude separation treatment S43 (including sugar solution X7), the juice obtained by the secondary crude separation treatment S45 (including sugar solution X8), and the dehydration treatment S46 were obtained.
  • Biogas X51 is generated by methane fermentation using a separation liquid (including sugar liquid X9) as a fermentation raw material.
  • Biogas X51 is a gas containing methane gas and carbon dioxide as main components.
  • methane fermentation is an anaerobic organic matter decomposition treatment, that is, a reaction system that generates digestive gas containing methane gas and carbon dioxide as the main components by decomposing organic matter by the action of anaerobic microorganisms methane bacteria. be.
  • activated sludge treatment is a method of treating wastewater using aerobic microorganisms, and is a wastewater treatment method that can minimize the input of energy from the outside.
  • the conversion step is a step of converting biogas X51, which is primary energy, into secondary energy (energy having a form different from that of primary energy).
  • the biogas X51 is used to perform power generation treatment S52, heat treatment S53, steam generation treatment S54, drying treatment S47, and molding treatment S48.
  • the power generation treatment S52, the heat treatment S53, and the steam generation treatment S54 are performed after the methane fermentation treatment S51.
  • the drying treatment S47 and the molding treatment S48 are performed after the dehydration treatment S46.
  • the methane fermentation treatment S51 branches into two routes.
  • the first route is a route that goes through the power generation treatment S52 and the heat treatment S53.
  • the second route is a route that passes through the steam generation process S54.
  • the power generation treatment S52 is performed after the methane fermentation treatment S51. That is, power is generated using the biogas X51 obtained by the methane fermentation treatment S51.
  • a generator is driven by operating a gas engine or a gas turbine using biogas X51 as fuel, and electric power X520 is obtained.
  • the electric power X520 can be used as various equipment electric powers.
  • electric power X520 can be supplied to the wet mill in the above-mentioned wet mill treatment S44, the separation device in the primary rough separation treatment S43 and the secondary rough separation treatment S45, and the dehydrator in the dehydration treatment S46.
  • the electric power X520 can also be used as equipment electric power in the plate-making process described later.
  • the heat treatment S53 is performed after the power generation treatment S52. That is, hot water X53 is generated by heat exchange with the waste heat X52 generated by the power generation process S52.
  • waste heat X52 is generated by driving the generator.
  • water at room temperature for example, tap water
  • This hot water X53 is used when performing the dipping treatment S42 and the wet milling treatment S44 as described above.
  • the steam generation treatment S54 is performed after the methane fermentation treatment S51. That is, steam X54 is generated using the biogas X51 obtained by the methane fermentation treatment S51 as fuel. Specifically, steam X54 is generated by operating a once-through boiler using biogas X51 as fuel, for example. The steam X54 can be used in the drying treatment S47 described later.
  • the drying treatment S47 is performed. Specifically, a dried cake X47 is produced by drying the dehydrated cake X46 using a predetermined sludge dryer.
  • the water content of the dehydrated cake X46 is, for example, 50 to 60%.
  • the water content of the dried cake X47 is, for example, 10 to 15%.
  • the steam X54 obtained by the above-mentioned steam generation treatment S54 can be used as a heat source.
  • the molding process S48 is performed after the drying process S47. Specifically, the dried cake X47 is molded into pellets of a predetermined size by using a predetermined molding device. That is, by applying the pressure molding treatment to the dried cake X47, pellets obtained by molding the dried cake X47 into pellets are produced. These pellets are mainly composed of the wood component of the palm trunk X1 and are fuel pellets X48 derived from the waste material X22 that can be used as fuel.
  • the plate materialization process is a process of plate materialization using a plurality of palm thin plates X21. As a result, a wood board X33 is obtained (see FIG. 5C).
  • the wood board X33 is used, for example, as a building material, a furniture material, or the like.
  • the plate materialization process includes an impregnation step, a thin plate drying step, and a laminated bonding step. Hereinafter, each step will be described.
  • Impregnation process S31 is performed. That is, a plurality of palm thin plates X21 are impregnated with a polyvalent carboxylic acid to obtain a plurality of catalyst-impregnated thin plates X31.
  • the polyvalent carboxylic acid can function as a curing catalyst.
  • the polyvalent carboxylic acid is not particularly limited as long as it is a compound having a plurality of carboxy groups.
  • examples of the polyvalent carboxylic acid include citric acid, tartaric acid, malic acid, gluconic acid, sebacic acid, itaconic acid, succinic acid, oxalic acid, adipic acid, malonic acid, phthalic acid, maleic acid, fumaric acid and glutaric acid (1). , 5-Pentane diic acid), glutaconic acid, penten diic acid and the like. Acid anhydride can also be used as the polyvalent carboxylic acid.
  • citric acid, tartaric acid, malic acid, gluconic acid, sebacic acid, and itaconic acid are particularly preferable because they can be produced from plants as raw materials. When plants are used as raw materials in this way, the use of fossil resources is suppressed, so that the wood board X33 can be obtained without burdening the environment.
  • the polycarboxylic acid is synonymous with a polycarboxylic acid.
  • the polyvalent carboxylic acid is supplied to the palm thin plate X21 as a polyvalent carboxylic acid solution (for example, a polyvalent carboxylic acid aqueous solution).
  • a polyvalent carboxylic acid solution for example, a polyvalent carboxylic acid aqueous solution.
  • the polyvalent carboxylic acid is easily impregnated into the palm thin plate X21.
  • the thin plate drying step is a step after the impregnation step.
  • the thin plate drying process S32 is performed. That is, a plurality of dried thin plates X32 are obtained by drying the plurality of catalyst-impregnated thin plates X31 using secondary energy. As a result, excess water contained in the catalyst-impregnated thin plate X31 can be removed.
  • the secondary energy is not particularly limited, but for example, the electric power X520 obtained by the above-mentioned power generation treatment S52, the waste heat X53 obtained by the heat treatment S53, and the steam X54 obtained by the steam generation treatment S54. And fuel pellet X48 and the like.
  • electric power X520 can be supplied to the dryer. In this way, since there are a plurality of options for secondary energy, it is possible to use them properly according to the application or to use a plurality of secondary energies in combination.
  • the laminating and bonding step is a step after the thin plate drying step.
  • the laminating and bonding process S33 is performed. That is, as shown in FIG. 5B, a plurality of dry thin plates X32 are laminated, and the plurality of dry thin plates X32 are heated and pressed by using secondary energy to be laminated and bonded. As a result, a wood board X33 is obtained (see FIG. 5C). That is, by heating and pressurizing, the saccharides contained in the dry thin plates X32 react with the polyvalent carboxylic acid, and this reaction product functions as an adhesive to bond the adjacent dry thin plates X32 to each other.
  • the heating temperature is not particularly limited, but is preferably 140 ° C. or higher and 230 ° C. or lower, and more preferably 200 ° C. or higher and 220 ° C. or lower.
  • the pressure of the above pressurization is preferably 0.5 MPa or more and 4 MPa or less.
  • the heating and pressurizing time is preferably 10 seconds or more and 30 minutes or less, and more preferably 1 minute or more and 20 minutes or less.
  • Adhesive reaction means the reaction between a saccharide and a polyvalent carboxylic acid.
  • the saccharides are hydrolyzed to produce a hydrolysis product.
  • the hydrolysis product is dehydrated and condensed to produce a reaction product of a sugar denaturant.
  • the reaction product of this saccharide and the polyvalent carboxylic acid (for example, a sugar-citric acid reaction product) becomes thermosetting.
  • sucrose sucrose
  • fructose sucrose
  • furfural specifically, 5- (hydroxymethyl) furfural
  • Furfural which is a sugar-modified product, becomes a thermosetting resin, furan resin, by further heat treatment, and is cured in the presence of a polyvalent carboxylic acid.
  • glucose becomes a sugar ester polymer by the dehydration condensation reaction, and the curing and adhesion reaction proceed.
  • Examples of the secondary energy used in the laminating and bonding process include the same as in the case of the thin plate drying process.
  • electric power X520 can be supplied to the hot press.
  • the fiber direction (wood grain direction) of the adjacent dry thin plates X32 may be non-parallel or parallel.
  • Non-parallel includes orthogonality.
  • the wood board X33 can be manufactured by effectively utilizing the waste material X22. That is, at least a part of the energy required for manufacturing the wood board X33 can be covered by the energy (secondary energy) obtained from the waste material X22 of the palm family plant (mainly palm trunk X1) which is the raw material of the wood board X33. ..
  • the secondary energy that can be obtained from the waste material X22 is so-called biomass energy, not fossil fuel, so that it becomes easy to realize carbon neutrality.
  • the method for producing the wood board X33 according to the second embodiment is different from the method for producing the wood board X33 according to the first embodiment in that it further includes a sugar supply step.
  • the sugar supply step is included in the above-mentioned plate-making process.
  • the sugar supply step is a step of producing sugar X61 by drying sugar liquid X300 squeezed from a plurality of palm thin plates X21 using secondary energy, and supplying sugar X61 to the plurality of dry thin plates X32. .. Specifically, in the sugar supply step, the pressure treatment S30 and the sugar supply treatment S61 are performed.
  • the pressurizing process S30 is performed between the cutting process S2 and the impregnation process S31.
  • the pressurizing process S30 is a process of pressurizing and squeezing a plurality of palm thin plates X21 obtained by the cutting process S2. Thereby, excess water can be removed from the plurality of palm thin plates X21.
  • the pressurizing treatment S30 is performed, for example, water can be squeezed out from the palm thin plate X21 by sandwiching the palm thin plate X21 between a pair of drawing rolls and pressurizing. After pressurization, the thin plate X30 and the juice squeezed liquid are obtained by the pressurizing treatment S30.
  • the thin plate X30 after pressurization is impregnated with the polyvalent carboxylic acid by the impregnation treatment S31 to become the catalyst impregnated thin plate X31.
  • the juice squeezed liquid is a mixed liquid containing the sap (sugar liquid X300) of the palm stem X1 and water as main components, and is used for the sugar supply treatment S61.
  • the sugar solution X300 obtained as described above is used as the sugar solution X7 obtained by the primary crude separation treatment S43 of the first embodiment, the sugar solution X8 obtained by the secondary crude separation treatment S45, and the dehydration treatment S46. It may be contained in the sugar solution X9 obtained by.
  • the amount of the biogas X51 obtained from the sugar liquids X7, X8, X9, and X300 can be increased by increasing the amount of the sugar liquids X7, X8, X9, and X300. That is, the sugar solution X300 obtained as described above may be supplied to the methane fermentation step (methane fermentation treatment S51). In this way, by increasing the amount of the biogas X51, the amount of secondary energy converted from the biogas X51 can be increased.
  • the sugar supply treatment S61 is performed. That is, sugar X61 is generated by drying the sugar solution X300 squeezed from the plurality of palm thin plates X21 using secondary energy, and the sugar X61 is supplied to the plurality of dried thin plates X32. The sugar X61 is supplied to at least one surface of the opposing dry thin plates X32. The sugar content X61 is obtained by removing excess water from the sugar solution X300 and can be used as an adhesive.
  • the sugar content X61 can enhance the adhesive force between the plurality of palm thin plates X21 in the wood board X33.
  • the method for manufacturing the wood board X38 according to the third embodiment is the first and second embodiments in that the preparation process is a process of dividing the raw material palm plant into a crushed palm product X23 and a waste material X22. It is different from the manufacturing method of the wood board X38 according to the form.
  • the method for manufacturing the wood board X38 according to the third embodiment is a process for making a board using the crushed palm product X23, and the wood board X38 according to the first and second embodiments is manufactured. Different from the method.
  • the preparatory process is a process of dividing a palm plant (mainly an oil palm trunk (palm trunk X1)) as a raw material into a crushed palm product X23 and a waste material X22.
  • the preparation process includes an aging step and a crushing step. After the preparatory process, it branches into two processes, an energy conversion process and a plate materialization process.
  • the aging process of the present embodiment is the same as the aging process of the first to second embodiments. In this embodiment as well, the aging step may not be necessary.
  • palmaceous plants mainly palm stem X1
  • the pulverization treatment S21 is not particularly limited, but can be performed using, for example, a chipper.
  • a crushed palm product X23 and a waste material X22 are obtained from the palm stem X1 (aged palm stem X2 in this embodiment). That is, a part of the palm trunk X1 becomes the crushed palm product X23, and the rest unsuitable for the crushed palm product X23 becomes the waste material X22.
  • the crushed palm product X23 is used in the plate-making process and becomes a raw material for the wood board X38.
  • the waste material X22 is used in the energy conversion process and becomes an energy source.
  • the coconut crushed product X23 contains a vascular bundle.
  • the vascular bundle is a bundle-shaped passage organization consisting of phloem and xylem.
  • the phloem is the part of the phloem where the phloem tubes are gathered.
  • the xylem is the area where vessels, temporary vessels, or fibrous cells are gathered, and carries water absorbed from the roots.
  • the size of the crushed coconut product X23 is preferably 50.0 mm or less in length and preferably 2.00 mm or less in diameter.
  • the length of the crushed palm product X23 is 50.0 mm or less and the diameter is 2.00 mm or less, the strength of the wood board X38 can be improved and the surface smoothness of the wood board X38 can be achieved at the same time.
  • the process is divided into two processes, an energy conversion process and a plate materialization process, through the preparation process (aging process and crushing process).
  • the energization process of the present embodiment is the same as the energization process of the first and second embodiments.
  • At least a part of the waste material X22 may be a crushed palm product X23.
  • the waste material X22 may contain the coconut crushed material X23.
  • the plate-making process is a process of making a plate material using the crushed coconut product X23. As a result, the wood board X38 is obtained.
  • the wood board X38 of the present embodiment is also used as, for example, a building material, a furniture material, or the like, like the wood board X33 of the first to second embodiments.
  • the plate-making process includes a drying step, a compression step, and an bonding step. Hereinafter, each step will be described.
  • the drying step is a step after the crushing step.
  • the drying process S34 is performed. That is, the dried crushed product X34 is obtained by drying the crushed palm product X23 using secondary energy. As a result, excess water contained in the crushed coconut product X23 can be removed.
  • the secondary energy is not particularly limited, but for example, the electric power X520 obtained by the above-mentioned power generation treatment S52, the waste heat X53 obtained by the heat treatment S53, and the steam X54 obtained by the steam generation treatment S54. And fuel pellet X48 and the like.
  • the drying process S34 is performed using a predetermined dryer, electric power X520 can be supplied to the dryer. In this way, since there are a plurality of options for secondary energy, it is possible to use them properly according to the application or to use a plurality of secondary energies in combination.
  • the compression step is a step after the drying step.
  • the compression process S35 is performed. That is, the compressed product X35 is obtained by compressing the dried pulverized product X34 using secondary energy.
  • the shape of the compressed product X35 is not particularly limited, and examples thereof include a pellet shape, a tablet shape, a briquette shape, a block shape, and a plate shape.
  • the specific gravity of the compressed product X35 is preferably 0.35 or more and 1.50 or less.
  • the specific gravity of the compressed product X35 is 0.35 or more, the storability of the compressed product X35 can be improved.
  • the specific gravity of the compressed product X35 is 1.50 or less, the strength of the wood board X38 can be improved.
  • the water content of the compressed product X35 is preferably 25% by mass or less, more preferably 20% by mass or less.
  • the water content of the compressed product X35 is 25% by mass or less, the shape of the compressed product X35 can be easily maintained, spoilage can be suppressed, and the storage stability of the compressed product X35 can be improved.
  • the secondary energy is not particularly limited, but for example, the electric power X520 obtained by the above-mentioned power generation treatment S52, the waste heat X53 obtained by the heat treatment S53, and the steam X54 obtained by the steam generation treatment S54. And fuel pellet X48 and the like.
  • the compression process S35 is performed using a predetermined compression molding machine (for example, a pelletizer or the like)
  • the electric power X520 can be supplied to the compression molding machine. In this way, since there are a plurality of options for secondary energy, it is possible to use them properly according to the application or to use a plurality of secondary energies in combination.
  • the bonding step is a step after the compression step.
  • the bonding process S36 is performed.
  • the adhesive treatment S36 is a series of treatments in which the compressed wood fiber X35 is steamed, the wood fiber obtained by defibration is dried, an adhesive is added to the wood fiber, and then the wood fiber is formed and hot-press formed. including.
  • steaming is a treatment of the compressed product X35 with saturated steam at high temperature and high pressure.
  • the temperature of the saturated water vapor is not particularly limited, but is, for example, 150 ° C. or higher and 200 ° C. or lower.
  • the pressure of the saturated water vapor is not particularly limited, but is, for example, 0.5 MPa or more and 2.0 MPa or less.
  • the steaming time is not particularly limited, but is, for example, 1 minute or more and 15 minutes or less.
  • Defibering is a process of dissociating the compressed product X35 after steaming into wood fibers.
  • An appropriate refiner is used for defibration.
  • steaming and defibration may be performed at the same time using a steaming defibration device or the like.
  • Drying is a process that reduces the moisture content of defibrated wood fibers.
  • the water content of the dried wood fiber is preferably 20% by mass or less.
  • the adhesive is preferably an adhesive containing a thermosetting resin.
  • the thermosetting resin is not particularly limited, and examples thereof include urea resin, melamine resin, and isocyanate resin.
  • the amount of the adhesive added to the wood fiber is not particularly limited as long as the performance of the wood board X38 is not impaired.
  • the wood fiber to which the adhesive has been added is formed into a desired shape using an appropriate forming machine.
  • the desired shape is not particularly limited, and examples thereof include a matte shape and the like.
  • the formed wood fiber is hot-press molded using an appropriate hot press.
  • the temperature at the time of hot pressure molding is not particularly limited, but is, for example, 140 ° C. or higher and 230 ° C. or lower.
  • the pressure at the time of hot pressure molding is not particularly limited, but is, for example, 0.5 MPa or more and 4 MPa or less.
  • the time for hot pressure molding is not particularly limited, but is, for example, 10 seconds or more and 3 minutes or less.
  • the wood board X38 can be obtained by the above adhesive treatment S36. That is, by heating and pressurizing, the adhesive is cured, and the wood fibers are adhered to each other by the cured adhesive to obtain the wood board X38.
  • the bonding treatment S36 may also be performed using secondary energy such as the electric power X520 obtained by the power generation treatment S52 described above.
  • the wood board X38 can be manufactured by effectively utilizing the waste material X22. That is, at least a part of the energy required for manufacturing the wood board X38 can be covered by the energy (secondary energy) obtained from the waste material X22 of the palm family plant (mainly palm trunk X1) which is the raw material of the wood board X38. ..
  • the secondary energy that can be obtained from the waste material X22 is so-called biomass energy, not fossil fuel, so that it becomes easy to realize carbon neutrality.
  • the method for producing the wood board X38 according to the fourth embodiment is different from the method for producing the wood board X38 according to the third embodiment in that it further includes a crushed product squeezing step.
  • the crushed product squeezing step is a step of performing the squeezing treatment S37, and is included in the above-mentioned plate-making process.
  • the juice squeezing treatment S37 is performed between the pulverizing treatment S21 and the drying treatment S34.
  • the juice squeezing treatment S37 is a treatment for squeezing the sugar solution X300 from the coconut crushed product X23. In other words, the coconut crushed product X23 is divided into a squeezed crushed product X37 and a sugar solution X300 by the juice squeezing treatment S37.
  • the squeezed crushed product X37 is then treated in the same manner as the coconut crushed product X23 of the third embodiment, and the drying treatment S34 is performed.
  • the sugar solution X300 is the sugar solution X7 obtained by the primary crude separation treatment S43 in the energy conversion process, the sugar solution X8 obtained by the secondary coarse separation treatment S45, and the sugar solution X9 obtained by the dehydration treatment S46. May be included in.
  • the amount of the biogas X51 obtained from the sugar liquids X7, X8, X9, and X300 can be increased by increasing the amount of the sugar liquids X7, X8, X9, and X300. That is, the sugar solution X300 obtained as described above may be supplied to the methane fermentation step (methane fermentation treatment S51). In this way, by increasing the amount of the biogas X51, the amount of secondary energy converted from the biogas X51 can be increased.
  • the first aspect is a method for producing a wood board (X33) using palmaceous plants, which comprises a cutting step, a squeezing step, a methane fermentation step, a conversion step, an impregnation step, and a thin plate drying step. , With a laminated bonding process.
  • the cutting step is a step of cutting the palm family plant to obtain a plurality of palm thin plates (X21) and waste materials (X22).
  • the juice squeezing step is a step of squeezing a sugar solution (X7, X8, X9) from the waste material (X22).
  • the methane fermentation step is a step of methane fermentation treatment of the sugar solution (X7, X8, X9) to obtain biogas (X51).
  • the conversion step is a step of converting the biogas (X51) into secondary energy.
  • the impregnation step is a step of impregnating the plurality of palm thin plates (X21) with a polyvalent carboxylic acid to obtain a plurality of catalyst-impregnated thin plates (X31).
  • the thin plate drying step is a step of obtaining a plurality of dried thin plates (X32) by drying the plurality of catalyst-impregnated thin plates (X31) using the secondary energy.
  • the laminating and bonding step is a step of using the secondary energy to heat and pressurize the plurality of dry thin plates (X32) for laminating and adhering.
  • the wood board (X33) can be manufactured by effectively utilizing the waste material (X22).
  • the second aspect is a method for producing a wood board (X38) using palmaceous plants, which comprises a crushing step, a squeezing step, a methane fermentation step, a conversion step, a drying step, and a compression step. It has a bonding process.
  • the crushing step is a step of crushing the palm family plant to obtain a crushed palm product (X23) and a waste material (X22).
  • the juice squeezing step is a step of squeezing a sugar solution (X7, X8, X9) from the waste material (X22).
  • the methane fermentation step is a step of methane fermentation treatment of the sugar solution (X7, X8, X9) to obtain biogas (X51).
  • the conversion step is a step of converting the biogas (X51) into secondary energy.
  • the drying step is a step of obtaining a dry pulverized product (X34) by drying the coconut crushed product (X23) using the secondary energy.
  • the compression step is a step of compressing the dry pulverized product (X34) using the secondary energy to obtain a compressed product (X35).
  • the bonding step is a step of steaming and defibrating the compressed product (X35), drying the wood fiber, adding an adhesive to the wood fiber, forming the wood fiber, and hot-pressing the fiber.
  • the wood board (X38) can be manufactured by effectively utilizing the waste material (X22).
  • the third aspect is a method for manufacturing a wood board (X33, X38) based on the first or second aspect.
  • the secondary energy is at least one of electric power (X520) and fuel pellets (X48) derived from the waste material (X22).
  • the secondary energy can be used properly according to the application.
  • the amount of the sugar solution (X7, X8, X9, X300) is increased. Can be done.
  • the fifth aspect is a method for manufacturing a wood board (X33, X38) based on any one of the first, third, and fourth aspects.
  • the biogas (X51) also includes a biogas (X51) obtained by methane fermentation of a sugar solution (X300) squeezed from the plurality of palm thin plates (X21).
  • the amount of biogas (X51) can be increased.
  • the sixth aspect is a method for manufacturing a wood board (X33) based on any one of the first, third, fourth, and fifth aspects.
  • the method for producing the wood board (X33) further includes a sugar supply step.
  • sugar (X61) is produced by drying the sugar solution (X300) squeezed from the plurality of palm thin plates (X21) using the secondary energy, and the sugar (X61) is produced. Is a step of supplying the plurality of dry thin plates (X32).
  • the sugar content (X61) can enhance the adhesive force between a plurality of palm thin plates (X21) in the wood board (X33).
  • the seventh aspect is a method for manufacturing a wood board (X33, X38) based on the second or third aspect.
  • the sugar solution (X7, X8, X9) also includes a sugar solution (X300) squeezed from the crushed coconut product (X23).
  • the amount of the sugar solution (X7, X8, X9, X300) is increased. Can be done.
  • the eighth aspect is a method for manufacturing a wood board (X33, X38) based on any one of the second, third, and seventh aspects.
  • the biogas (X51) also includes a biogas (X51) obtained by methane fermentation of a sugar solution (X300) squeezed from the pulverized palm product (X23).
  • the amount of biogas (X51) can be increased.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un procédé pour produire une planche de bois X33 à l'aide de plants de palmier, ledit procédé comprenant une étape de coupe, une étape de pressage, une étape de fermentation au méthane, une étape de conversion, une étape d'imprégnation, une étape de séchage de plaques minces, et une étape de stratification et de collage. Lors de l'étape de coupe, un plant de palme est coupé pour obtenir une pluralité de plaques minces de palmier X21 et de déchets X22. Dans l'étape de pressage, des solutions de sucre X7, X8 et X9 sont pressées à partir des déchets X22. Dans l'étape de fermentation au méthane, des solutions de sucre X7, X8 et X9 sont soumises à un traitement de fermentation au méthane pour obtenir du biogaz X51. Dans l'étape de conversion, le biogaz X51 est converti en énergie secondaire. Dans l'étape d'imprégnation, une pluralité de plaques minces X31 imprégnées de catalyseur sont obtenues. Dans l'étape de séchage de plaques minces, une pluralité de plaques minces sèches X32 sont obtenues par utilisation d'énergie secondaire. Dans l'étape de stratification et de collage, la pluralité de plaques minces sèches X32 sont stratifiées et collées par utilisation d'énergie secondaire.
PCT/JP2021/027877 2020-07-31 2021-07-28 Procédé de fabrication d'une planche en bois WO2022025108A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012214013A (ja) * 2011-03-30 2012-11-08 Panasonic Corp 木質系ボード及びその製造方法
JP2015160366A (ja) * 2014-02-27 2015-09-07 ホクシン株式会社 繊維板およびその製造方法
JP2019089249A (ja) * 2017-11-14 2019-06-13 パナソニックＩｐマネジメント株式会社 木質複合板の製造方法
JP2019103498A (ja) * 2014-10-10 2019-06-27 株式会社Ihi セルロース系バイオマスの搾汁方法及び気体燃料化方法
JP2020062845A (ja) * 2018-10-18 2020-04-23 パナソニックＩｐマネジメント株式会社 バイオマス成形材料の製造方法、バイオマス成形材料、及びバイオマス成形体の製造方法
JP2020089988A (ja) * 2018-12-03 2020-06-11 パナソニックＩｐマネジメント株式会社 バイオマス成形体の製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012214013A (ja) * 2011-03-30 2012-11-08 Panasonic Corp 木質系ボード及びその製造方法
JP2015160366A (ja) * 2014-02-27 2015-09-07 ホクシン株式会社 繊維板およびその製造方法
JP2019103498A (ja) * 2014-10-10 2019-06-27 株式会社Ihi セルロース系バイオマスの搾汁方法及び気体燃料化方法
JP2019089249A (ja) * 2017-11-14 2019-06-13 パナソニックＩｐマネジメント株式会社 木質複合板の製造方法
JP2020062845A (ja) * 2018-10-18 2020-04-23 パナソニックＩｐマネジメント株式会社 バイオマス成形材料の製造方法、バイオマス成形材料、及びバイオマス成形体の製造方法
JP2020089988A (ja) * 2018-12-03 2020-06-11 パナソニックＩｐマネジメント株式会社 バイオマス成形体の製造方法

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