WO2023084572A1 - Procédé de production de combustible de biomasse solide et additif d'absorption d'eau - Google Patents

Procédé de production de combustible de biomasse solide et additif d'absorption d'eau Download PDF

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Publication number
WO2023084572A1
WO2023084572A1 PCT/JP2021/041118 JP2021041118W WO2023084572A1 WO 2023084572 A1 WO2023084572 A1 WO 2023084572A1 JP 2021041118 W JP2021041118 W JP 2021041118W WO 2023084572 A1 WO2023084572 A1 WO 2023084572A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
absorbing additive
biomass fuel
solid biomass
fungus bed
Prior art date
Application number
PCT/JP2021/041118
Other languages
English (en)
Japanese (ja)
Inventor
潤 沖原
健治 引野
Original Assignee
中国電力株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国電力株式会社 filed Critical 中国電力株式会社
Priority to PCT/JP2021/041118 priority Critical patent/WO2023084572A1/fr
Priority to JP2022506141A priority patent/JPWO2023084572A1/ja
Publication of WO2023084572A1 publication Critical patent/WO2023084572A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
    • B09B3/20—Agglomeration, binding or encapsulation of solid waste
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/40—Solid fuels essentially based on materials of non-mineral origin
    • C10L5/44—Solid fuels essentially based on materials of non-mineral origin on vegetable substances
    • 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
    • Y02E50/10—Biofuels, e.g. bio-diesel
    • 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

  • the present invention relates to a method for producing solid biomass fuel and a water-absorbing additive.
  • General waste includes, for example, mushroom culture media (fungal beds) used for artificial cultivation of mushrooms.
  • mushroom medium fungal bed
  • medium materials containing corn cobs corn cob
  • sawdust etc.
  • waste culture medium waste culture medium
  • a kneading step of obtaining a kneaded product with moldability a molding step of applying pressure to the kneaded product to obtain a molded product, and a drying step of drying the molded product.
  • Patent Document 1 has a drying process for drying the molded product, so there is a problem that drying requires time and money.
  • the present invention has been made in view of the above, and provides a method for producing a solid biomass fuel that can omit the step of drying the waste fungus bed and that can obtain favorable formability and durability of the waste fungus bed. With the goal.
  • the present invention is a method for producing solid biomass fuel, comprising a pressure molding step of pressurizing a waste fungus bed and a water absorbing additive adding step of adding a water absorbing additive to the waste fungus bed. and methods for producing solid biomass fuels.
  • the water-absorbing additive is added so that the water content of the mixture of the waste fungus bed and the water-absorbing additive is 40% to 60%, (1) or ( 2) The method for producing a solid biomass fuel according to 2).
  • the present invention provides a water-absorbing additive used when forming a waste fungus bed to produce a solid biomass fuel, wherein the water-absorbing additive has a mass ratio of 1 to the waste fungus bed. It relates to a water-absorbing additive that is added to the waste fungus bed so as to be within the range of /2 to 1/20.
  • the water-absorbing additive is used by adding it to the waste fungus bed so that the water content of the mixture of the waste fungus bed and the water-absorbing additive is 40% to 60%.
  • the present invention can provide a water-absorbing additive used in the production of solid biomass fuel, which can omit the step of drying the waste mushroom bed, and which can obtain favorable formability and durability of the waste mushroom bed.
  • the solid biomass fuel according to the present embodiment is formed by using a waste mushroom bed as a main raw material and adding a water-absorbing additive to improve moldability.
  • waste mushroom bed used as the main raw material for solid biomass fuel is generated as waste when artificially cultivating mushrooms such as shiitake, oyster mushroom, maitake, king oyster mushroom, and shimeji mushroom.
  • Waste mushroom beds include, for example, corn cobs (corn cobs), rice bran, crushed wood, sawdust, mushrooms, and the like.
  • the waste fungus bed is discharged in a state containing a lot of water, for example, with a water content of about 50% to 70%.
  • the solid biomass fuel according to the present embodiment can obtain favorable moldability even when the moisture content of the waste fungus bed as a raw material is about 60% to 70%.
  • the water-absorbing additive is used by being added to the waste fungus bed.
  • the water-absorbing additive is added to the waste fungus bed to reduce the water content of the mixture of the waste fungus bed and the water-absorbing additive, thereby improving moldability.
  • Pulverized rice hulls are preferably used as the water-absorbing additive.
  • the crushed rice husks have a low moisture content of about 5 to 15%, and are presumed to play a role of a binder that develops affinity between the corn cobs contained in the waste mushroom bed and other materials. .
  • rice husks which are raw materials for pulverized rice husks, are generated as a waste product, it is possible to use all of the raw materials as organic resources of biological origin when mixing them with waste fungus beds to produce solid biomass fuel.
  • Pulverized rice husks are produced by pulverizing rice husks. Pulverization of rice husks increases the surface area, increases the water absorption and retention capacity, and reduces the volume. It has the advantage of being able to improve the calorific value of biomass fuel.
  • the water-absorbing additive in addition to the above, organic resources such as sawdust, crushed wood, and wood chips, or water-absorbing materials composed of water-absorbing resin, etc. may be used.
  • the water-absorbing additive may be used singly or in combination of two or more. From the standpoint of moldability, the water-absorbing additive is preferably pulverized to a size smaller than a predetermined size.
  • the water-absorbing additive is preferably added to the waste fungus bed so that the mass ratio of water-absorbing additive/waste fungus bed is in the range of 1/2 to 1/20. .
  • the mass ratio is more preferably in the range of 1/4 to 1/20, and even more preferably in the range of 1/8 to 1/20.
  • the water-absorbing additive when added to the waste fungus bed, reduces the water content of the mixture of the waste fungus bed and the water-absorbing additive to, for example, 40-60%. As a result, the moldability of the solid biomass fuel can be improved, and the durability of the solid biomass fuel can be ensured. More preferably, the water content of the mixture of the waste fungus bed and the water absorbing additive is 45 to 55%.
  • the solid biomass fuel according to the present embodiment may contain components other than the above as long as the effects of the present invention are not hindered, except that the waste fungus bed and the water-absorbing additive are essential. However, in the solid biomass fuel according to the present embodiment, preferable moldability is obtained by the water-absorbing additive. organic resources, etc.) may not be included.
  • the method for producing a solid biomass fuel according to the present embodiment includes a kneading step of kneading the waste mushroom bed, a pressure molding step of pressurizing the waste mushroom bed, and a water absorbing additive that adds a water absorbing additive to the waste mushroom bed. and an adding step.
  • the kneading step is a step of homogenizing the waste fungus bed by kneading it.
  • a step of adding a water-absorbing additive may be provided before the kneading step, and in the kneading step, a mixture of the waste fungus bed and the water-absorbing additive may be kneaded.
  • a specific kneading method is not particularly limited, and examples thereof include a method using a kneading machine such as a mixer or a kneader.
  • the kneading time can be arbitrarily changed depending on the degree of homogenization of the waste fungus bed, and can be, for example, several tens of seconds to several minutes.
  • the pressure molding process is a process of pressurizing the waste fungus bed that has undergone the kneading process or a mixture of the waste fungus bed and the water-absorbing additive to form pellets.
  • the pressure molding step includes, for example, a step of filling a mold having a predetermined size and shape with the waste fungus bed, or the waste fungus bed and a water-absorbing additive, and pressurizing.
  • the pressure molding process may be a process using a granulator other than the above. .
  • the force during pressurization can be, for example, 2 MPa or less.
  • the water-absorbing additive addition step is a step of adding a water-absorbing additive to the waste fungus bed.
  • the water-absorbing additive addition step may be provided before the kneading step to uniformly mix the waste fungus bed and the water-absorbing additive.
  • the moisture content of the mixture of the waste mushroom bed and the water-absorbing additive can be made uniform, and the moldability in the pressure molding process can be improved.
  • the water-absorbing additive addition process is provided after the kneading process and the pressure molding process, and the water-absorbing additive is uniformly adhered to the surface of the waste fungus bed that has undergone the pressure molding process. good too.
  • the water-absorbing additive addition step may be provided before the kneading step and may also be provided after the pressure molding step. In this case, it is preferable that the total mass of the added water-absorbing additives satisfies the condition of mass ratio to the waste fungus bed.
  • the water-absorbing additive is preferably added so that the mass ratio of the water-absorbing additive/waste fungus bed is in the range of 1/2 to 1/20. Thereby, the moldability and durability of the produced solid biomass fuel can be made favorable.
  • the mass ratio is preferably in the range of 1/4 to 1/20, more preferably in the range of 1/8 to 1/20.
  • the mass ratio can be less than 1/20.
  • the moisture content of the mixture of the waste fungus bed and the water-absorbing additive is reduced to, for example, 40-60% by the water-absorbing additive addition process. As a result, the moldability of the produced solid biomass fuel is improved, and the durability of the solid biomass fuel can be ensured. More preferably, the water content of the mixture of the waste fungus bed and the water absorbing additive is 45 to 55%.
  • the solid biomass fuel production method according to the present embodiment may include steps other than those described above as long as the effects of the present invention are not impaired. For example, it may include a classification step of separating the waste mushroom bed with a sieve having a predetermined mesh size (eg, 3 to 6 mm). Thereby, the moldability of the waste mushroom bed can be further improved.
  • the method for producing solid biomass fuel includes the above-described classification step, the method for producing solid biomass fuel may not have the kneading step.
  • the solid biomass fuel production method according to the present embodiment includes the step of adding a water-absorbing additive, it may not include the drying step of drying the waste fungus bed.
  • Example 1 Pulverized rice husks (water content: 10.18%) were added to the waste fungus bed as a water-absorbing additive and kneaded manually. Specifically, after the waste fungus bed was lightly loosened on a stainless steel tray, the water-absorbing additive was added from above, and the tray was lightly vibrated and stirred with fingers for about 20 seconds. The water content of the mixture of the waste fungus bed and water absorbing additive after kneading was 52.39%. The mixture of the kneaded waste fungus bed and water-absorbing additive was pressurized and molded to obtain a solid biomass fuel according to Example 1. As the pressure molding method, a method of molding into a spherical shape (about 14 mm in diameter) with fingers was used. The moisture content was measured using a moisture meter MOC63u (manufactured by Shimadzu Corporation).
  • Comparative Examples 1 to 2 Solid biomass fuels according to Examples and Comparative Examples were obtained in the same manner as in Example 1, except that the mass ratio of the water-absorbing additive and the waste fungus bed was set to the ratio shown in Table 1. In Comparative Examples 1 and 2, no water absorbing additive was added.
  • Examples 8-9> Using a sieve with a mesh size of 2.9 mm, the waste mushroom bed from which corn cobs with a diameter exceeding 2.9 mm were removed was pressurized without kneading and molded. The surface was sprinkled with the mass ratio shown in , to obtain solid biomass fuels according to Examples 8 and 9.
  • a cylindrical PVC pipe (16 mm in diameter, 20 mm in height) is filled with the waste fungus bed, and a rod-shaped stainless steel member is used to compress the waste fungus bed. Using. At this time, the pressure for compressing the waste fungus bed was adjusted to the extent that no moisture was released from the waste fungus bed.
  • Weight reduction rate (weight immediately before drop test - weight of largest fragment immediately after drop test) / weight immediately before drop test * 100 (1)
  • Deformation rate (1 - short axis length of solid biomass fuel after drop test/average diameter of solid biomass fuel before drop test) * 100 (2)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

La présente invention concerne un procédé de production de combustible de biomasse solide avec lequel il est possible d'omettre une étape de séchage de compost de champignons, et d'obtenir une excellente aptitude à la mise en forme et une excellente durabilité de compost de champignons.　Un procédé de production de combustible de biomasse solide comprend une étape de mise en forme à la presse dans laquelle du compost de champignon est soumis à une pression, et une étape d'ajout d'additif d'absorption d'eau dans laquelle un additif d'absorption d'eau est ajouté de telle sorte que le rapport de masse par rapport au compost de champignon est de préférence compris dans la plage de 1/2-1/20. Dans l'étape d'ajout d'additif d'absorption d'eau, il est préférable d'ajouter l'additif d'absorption d'eau de telle sorte que la teneur en eau du mélange du compost de champignon et de l'additif d'absorption d'eau est de 40 % à 55 %.
PCT/JP2021/041118 2021-11-09 2021-11-09 Procédé de production de combustible de biomasse solide et additif d'absorption d'eau WO2023084572A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2021/041118 WO2023084572A1 (fr) 2021-11-09 2021-11-09 Procédé de production de combustible de biomasse solide et additif d'absorption d'eau
JP2022506141A JPWO2023084572A1 (fr) 2021-11-09 2021-11-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2021/041118 WO2023084572A1 (fr) 2021-11-09 2021-11-09 Procédé de production de combustible de biomasse solide et additif d'absorption d'eau

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WO2023084572A1 true WO2023084572A1 (fr) 2023-05-19

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006141218A (ja) * 2004-11-16 2006-06-08 Itou Seibaku:Kk 有機質製品製造方法
WO2007142161A1 (fr) * 2006-06-05 2007-12-13 Kabushiki Kaisha Nakata Combustible solide et son procédé de production
JP2008120890A (ja) * 2006-11-10 2008-05-29 Itou Seibaku:Kk バイオマス燃料製造方法、バイオマス燃料および使用済培地利用方法
JP2010077201A (ja) * 2008-09-24 2010-04-08 Takumi Shikagawa バイオマス燃料製造装置
JP2013256565A (ja) * 2012-06-11 2013-12-26 Olympus Corp 木質バイオマス燃料

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006141218A (ja) * 2004-11-16 2006-06-08 Itou Seibaku:Kk 有機質製品製造方法
WO2007142161A1 (fr) * 2006-06-05 2007-12-13 Kabushiki Kaisha Nakata Combustible solide et son procédé de production
JP2008120890A (ja) * 2006-11-10 2008-05-29 Itou Seibaku:Kk バイオマス燃料製造方法、バイオマス燃料および使用済培地利用方法
JP2010077201A (ja) * 2008-09-24 2010-04-08 Takumi Shikagawa バイオマス燃料製造装置
JP2013256565A (ja) * 2012-06-11 2013-12-26 Olympus Corp 木質バイオマス燃料

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