Method for adjusting moisture content of biomass solid fuel

Abstract

A technology is provided that makes it possible to adjust the moisture content of solid fuel made from carbonized biomass during transportation of the solid fuel. [Solution] The system comprises a manufacturing process for producing biomass solid fuel using carbonized biomass, a transporting process for transporting the biomass solid fuel produced in the manufacturing process, and a moisture adjustment process during the transporting process for adjusting the moisture content of the biomass solid fuel transported in the transporting process.

Description

[Technical Field]

[0001] The present disclosure relates to a method for adjusting moisture content of a biomass solid fuel. [Background technology]

[0002] Conventionally, various biomass fuels have been investigated.

[0003] For example, Patent Document 1 discloses that in order to maintain the total moisture content of PKS (palm kernel shells) within the above-mentioned specific range during transportation and storage, it is preferable to use means to prevent rainwater from entering the cargo tank using sheets, boards, etc. during transportation, and means to prevent contact with rainwater using roofs or sheets during storage.

[0004] Furthermore, for example, Patent Document 2 discloses that biomass solid fuel that has dried and has a reduced moisture content is subjected to moisture adjustment "during transportation of biomass solid fuel" or "during storage of biomass solid fuel." [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-93790 [Patent Document 2] JP 2020-200411 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, Patent Document 1 is based on the premise that PKS is not carbonized, and does not anticipate carbonized biomass solid fuel. Furthermore, Patent Document 2 does not anticipate adjusting the moisture content of biomass solid fuel during transportation.

[0007] The present disclosure has been made in consideration of such problems, and aims to provide a technology that can adjust the moisture content of solid fuel made from carbonized biomass during transportation. [Means for solving the problem]

[0008] The moisture adjustment method of the present disclosure includes a manufacturing process for manufacturing biomass solid fuel using carbonized biomass, a transporting process for transporting the biomass solid fuel manufactured in the manufacturing process, and a moisture adjustment process during the transporting process for adjusting the moisture content of the biomass solid fuel transported in the transporting process. [Effects of the Invention]

[0009] The present disclosure can provide a technology that can adjust the moisture content of solid fuel made from carbonized biomass during transportation. [Brief explanation of the drawings]

[0010] [Figure 1] 3 is a flowchart showing a moisture adjustment method in the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, a moisture regulation method according to an embodiment of the present disclosure will be described with reference to the drawings.

[0012] FIG. 1 shows a flowchart of the moisture adjustment method of this embodiment. The moisture adjustment method of this embodiment includes a production step S110, a transportation step S120, and a storage step S130. Note that the present disclosure only needs to include the production step S110 and the transportation step S120, and a moisture adjustment step S123 (details will be described later) during the transportation step S120, in which the moisture content of the biomass solid fuel transported in the transportation step S120 is adjusted. For example, if the solid fuel is used without being stored after transportation, the storage step S130 may not be included.

[0013] (Manufacturing process S110) In the production step S110, the carbonized biomass (biomass char) is used to produce a biomass solid fuel. In this disclosure, biomass refers to biological resources other than fossil fuels. Examples of biomass include thinned wood, pruned branches, waste wood, bark chips, construction waste chips, other wood, bamboo, grass, coconut shells, biomass residues from the palm oil industry, vegetables, fruits, food waste, waste mushroom beds, sludge, and other waste materials. The biomass may be woody biomass such as thinned wood, pruned branches, waste wood, bark chips, and other wood. Biomass carbonized material can be obtained by dry distilling such biomass.

[0014] There are no limitations on the method for producing biomass solid fuel (hereinafter sometimes simply referred to as solid fuel). For example, aggregates (solid fuel) containing biomass char can be molded through a kneading step of kneading raw materials containing biomass char, an inorganic binder, and water, a molding step of molding the raw materials into a predetermined shape using a molding machine, a curing step of curing the molded aggregates (moist air curing, steam curing, etc.), and a drying step of drying the cured aggregates.

[0015] The contents of the biomass char, inorganic binder, and water contained in the raw material are not limited. For example, from the viewpoint of the quality of the biomass solid fuel (product), the content of the biomass char in the raw material may be 50% by mass or more and 95% by mass or less. For example, from the viewpoint of moldability, the content of the inorganic binder in the raw material may be 15% by mass or more and 50% by mass or less.

[0016] The raw material only needs to contain biomass carbonized material, an inorganic binder, and water, and does not need to contain any other components, but may also contain any other components mixed in. Examples of the optional components include organic binders, coke powder, and inorganic substances other than the inorganic binder.

[0017] The fixed carbon content of biomass charcoal may be 75% or more on an anhydrous ash-free basis. Biomass charcoal with a high fixed carbon content has a low volatile content, so there are fewer components that volatilize even in high-temperature environments. This allows it to maintain sufficient strength even in high-temperature environments. The fixed carbon content on an anhydrous ash-free basis can be calculated by converting the value of fixed carbon on an anhydrous basis measured in accordance with "8. Calculation method for fixed carbon mass fraction (%)" in JIS M 8812:2006 "Coals and cokes - Industrial analysis methods" to the value on an anhydrous ash-free basis.

[0018] The particle size of the biomass char may be, for example, 10 mm or less, 2 mm or less, 0.5 to 2 mm, or 0.8 to 1.5 mm. If the particle size is too large, the adhesion between the biomass char particles may decrease, resulting in a decrease in strength. If the particle size is too small, the contact area between the biomass char particles may increase too much, resulting in a decrease in strength. The particle size of the biomass char can be measured using a sieve. When sieved using a sieve with 2 mm openings, the particle size below the sieve is 2 mm or less. The biomass char can be pulverized into powder using a known pulverizer.

[0019] The inorganic binder is an inorganic substance that functions to bind biomass char particles together. The inorganic binder preferably has a CaO content of 50% by mass or more in a dry state. In a dry state, the CaO content of the inorganic binder may be 55% by mass or more, or 60% by mass or more. Such an inorganic binder can lower the melting point of slag when used as solid fuel in a gasification melting furnace or a cupola furnace. In these facilities, limestone is sometimes used as a secondary material, and the limestone can be partially or entirely replaced by the inorganic binder's CaO.

[0020] The biomass solid fuel preferably has a predetermined moisture content that can prevent the biomass solid fuel from pulverizing due to drying and ensures the calorific value of the fuel. The predetermined moisture content is, for example, preferably 5% by mass or more and 25% by mass or less, and more preferably 5% by mass or more and 10% by mass or less. If the moisture content of the biomass solid fuel is 5% by mass or more, the minimum ignition energy can be increased, thereby preventing the biomass from igniting and preventing the solid fuel from pulverizing due to drying. If the moisture content of the biomass solid fuel is 25% by mass or less, the calorific value of the fuel can be ensured.

[0021] The method for molding the biomass solid fuel is not limited, and for example, a common molding machine such as a uniaxial pressure molding machine or a briquetting roll may be used.

[0022] (Moisture adjustment process S111 during manufacturing) In the moisture adjustment step S111 during production, the moisture content of the biomass solid fuel produced in the production step S110 is adjusted. There are no particular limitations on the specific method for adjusting the moisture content in the moisture content adjustment step S111 during production, but for example, moisture may be added to at least one of the raw material and the molded aggregates (solid fuel).

[0023] In the moisture adjustment step S111 during production, the method for adjusting the moisture content of the solid fuel is not limited, but may be adjusted by at least one of immersing at least one of the raw material and the lumps in water, spraying water on them, or storing them in a humidified space.

[0024] The moisture content of the biomass solid fuel can be confirmed, for example, by the following method. One gram of sample taken from the biomass solid fuel is dried by heating at 107°C ± 2°C for one hour. The weight loss due to heating is calculated as a percentage (%) of the mass of the sample before heating (JIS M8820 (2000)). The above procedure is carried out three times, and the percentage is calculated each time. The average of these percentages is the moisture content of the biomass solid fuel.

[0025] (Transportation process S120) In the transportation step S120, the biomass solid fuel produced in the production step S110 is transported. Specifically, in the transportation step S120, the solid fuel is transported from the location where the production step S110 is carried out to the location where the solid fuel will be used. In this embodiment, the transportation step S120 includes a land transportation step S121 in which the solid fuel is transported over land, and a marine transportation step S122 in which the solid fuel is transported over sea. Note that, in this embodiment, the transportation step S120 includes the marine transportation step S122 and the land transportation step S121, but the transportation step S120 does not have to include either the marine transportation step S122 or the land transportation step S121. That is, if the solid fuel is transported only over land in the transportation step S120, the marine transportation step S122 may not be included, and if the solid fuel is transported only over sea in the transportation step S120, the land transportation step S121 may not be included.

[0026] The means of transportation is not limited. When the land transportation step S121 is included and the solid fuel is transported by land, the land transportation means may be, for example, any one of a truck, a railroad, and a conveyor. When the marine transportation step S122 is included and the solid fuel is transported by sea, the marine transportation means may be, for example, any one of a cargo ship, a container ship, and a barge.

[0027] As mentioned above, it is preferable that the moisture content of the biomass solid fuel be 5% by mass or more and 25% by mass or less at the end of the production process S110, but it is also preferable that the moisture content of the biomass solid fuel be maintained at 5% by mass or more and 25% by mass or less during the period from when the solid fuel is transported to when it is stored in the transportation process S120.

[0028] In this embodiment, during the transportation step S120, a moisture adjustment step S123 is provided to adjust the moisture content of the biomass solid fuel transported in the transportation step S120. Note that "during the transportation step S120" refers to the time when the transportation step S120 is in progress.

[0029] (Moisture adjustment process during transportation S123) In the moisture adjustment step S123 during transportation, the moisture content of the biomass solid fuel transported in the transportation step S120 is adjusted. In the moisture adjustment step S123 during transportation, the moisture content of the biomass solid fuel transported in the transportation step S120 may be adjusted according to the current moisture content of the biomass solid fuel transported in the transportation step S120 (land transportation step S121, sea transportation step S122).

[0030] The moisture content of the biomass solid fuel transported in the transportation process S120 (land transportation process S121, sea transportation process S122) may be based on, for example, an actually measured value (actual measured value), or may be a predicted value (predicted value) based on, for example, the moisture content measured at the time of shipment after the production process S110 is completed and the environment in the transportation process S120. The environment in the transportation step S120 may be, for example, at least one of the season, temperature, and humidity in which the transportation step S120 is performed.

[0031] That is, in the moisture content adjustment step S123 during transportation, if the measured or predicted moisture content of the biomass solid fuel during transportation is outside a predetermined moisture content range or is expected to be outside the range, the moisture content of the biomass solid fuel transported in the transportation step S120 may be adjusted. The predetermined moisture content range may be, for example, from 5% by mass to 25% by mass.

[0032] In this embodiment, the transportation step S120 includes a land transportation step S121 and a marine transportation step S122. Therefore, the transportation moisture adjustment step S123 of this embodiment includes a land transportation moisture adjustment step S123a and a marine transportation moisture adjustment step S123b.

[0033] In the land transportation moisture adjustment step S123a, during the land transportation step S121, the moisture absorbed by the biomass solid fuel transported in the land transportation step S121 is adjusted according to the moisture content of the biomass solid fuel transported in the land transportation step S121. In the moisture adjustment step S123b during marine transportation, the moisture absorbed by the biomass solid fuel transported in the marine transportation step S122 is adjusted during the marine transportation step S122 according to the moisture content of the biomass solid fuel transported in the marine transportation step S122. In the transportation moisture adjustment step S123, the specific method for adjusting the moisture content of the biomass solid fuel transported in the transportation step S120 is not limited, but may be adjusted, for example, as follows.

[0034] For example, a preventive measure may be used to prevent the biomass solid fuel transported in the transportation step S120 (land transportation step S121, sea transportation step S122) from coming into contact with rainwater, and the moisture content of the biomass solid fuel transported in the transportation step S120 may be adjusted. The prevention means may be, for example, a sheet, a bag, a container, or the like, as long as it can prevent the solid fuel from coming into contact with rainwater. The prevention means used in the land transportation moisture adjustment step S123a may be a box-type truck, and the prevention means used in the sea transportation moisture adjustment step S123b may be a roof.

[0035] For example, during rainfall, in order to suppress an increase in the moisture content of the solid fuel due to rainwater hitting the solid fuel, the solid fuel can be prevented from coming into contact with rainwater by using a preventive measure such as a waterproof sheet. Also, during rainfall, for example, if the moisture content of the biomass solid fuel is low and it is necessary to increase the moisture content of the biomass solid fuel, the moisture content of the biomass solid fuel can be increased by stopping the blocking of rainwater by a preventive measure such as a waterproof sheet and adjusting the rainwater to come into contact with the solid fuel.

[0036] In addition, the prevention means is not limited to use simply to prevent solid fuel from coming into contact with rainwater, but may also be used, for example, to prevent the solid fuel from drying out by covering the solid fuel to suppress the evaporation of moisture.

[0037] For example, the moisture content of the biomass solid fuel transported in the transportation step S120 may be adjusted by spraying water on the biomass solid fuel transported in the transportation step S120 (land transportation step S121, sea transportation step S122). The specific method of watering is not limited, but may be, for example, rainfall as described above, or an automatic watering device, sprinkler, or the like.

[0038] The amount of water to be sprayed may be set appropriately taking into consideration the current moisture content of the solid fuel (actually measured value or predicted value) and the preferred moisture content of the solid fuel.

[0039] The moisture adjustment methods in the land transportation moisture adjustment step S123a and the sea transportation moisture adjustment step S123b may be the same or different.

[0040] For example, if the means of transport during land transport is a truck and a waterproof sheet is used to cover the truck bed as a preventive measure, the moisture adjustment process during land transport S123a may be carried out by opening and closing the waterproof sheet depending on the moisture content of the biomass solid fuel transported in the land transport process S121. Also, for example, if the means of transportation during sea transport is a cargo ship and an automatic sprinkler device is used as the watering means, the moisture adjustment process during sea transport S123b may be carried out by sprinkling water on the solid fuel using the automatic sprinkler device depending on the moisture content of the biomass solid fuel transported in the sea transport process S122.

[0041] In the moisture content adjustment step S123 during transportation, the moisture content of the biomass solid fuel transported in the transportation step S120 may be adjusted depending on the season in which the transportation step S120 is performed.

[0042] In Japan, the humidity and temperature of the air tend to decrease in winter and increase in summer. Therefore, the moisture content of the solid fuel in the transportation step S120 tends to decrease in winter and increase in summer. In the transportation moisture adjustment step S123, adjusting the moisture content to increase in winter (low humidity environment) can, for example, reduce the possibility of powdering due to drying of the solid fuel and the resulting dust explosion, while adjusting the moisture content to decrease in summer (high humidity environment) can, for example, suppress quality deterioration such as poor ignition caused by excessive moisture in the solid fuel.

[0043] (Storage step S130) In the storage step S130, the biomass solid fuel transported in the transportation step S120 is stored. The storage method and equipment are not limited, and the material may be stored, for example, in a silo, warehouse, shed, etc. Here, a shed is a building with no walls and only a roof, and refers to, for example, a temporary building with a roof placed over pillars to protect against rain and dew.

[0044] As mentioned above, it is preferable that the moisture content of the biomass solid fuel is within a predetermined range (e.g., 5% by mass or more and 25% by mass or less) during the transportation step S120, but it is also preferable that the moisture content of the biomass solid fuel be maintained within the predetermined range (e.g., 5% by mass or more and 25% by mass or less) during the storage period after the transportation step S120 until the solid fuel is used.

[0045] In this embodiment, during the storage step S130, a storage moisture adjustment step S131 is provided to adjust the moisture content of the biomass solid fuel stored in the storage step S130. Note that "during the storage step S130" refers to the time during the storage step S130.

[0046] (Storage moisture adjustment step S131) In the moisture adjustment step during storage S131, the moisture content of the biomass solid fuel stored in the storage step S130 is adjusted during the storage step S130. In the moisture adjustment step during storage S131, the moisture content of the biomass solid fuel stored in the storage step S130 may be adjusted according to the moisture content of the biomass solid fuel stored in the storage step S130.

[0047] In the storage moisture adjustment step S131, the specific method for adjusting the moisture content of the biomass solid fuel transported in the storage step S130 is not limited, but may be adjusted, for example, as follows.

[0048] For example, a means for preventing the biomass solid fuel stored in the storage step S130 from coming into contact with rainwater may be used to adjust the moisture content of the biomass solid fuel stored in the storage step S130. The prevention means may be anything that can prevent the solid fuel from coming into contact with rainwater, and may be, for example, a sheet, a bag, a container, or a roof. The method of using the prevention means may be the same as that explained in the transportation moisture adjustment step S123, and therefore the explanation will be omitted here.

[0049] For example, the moisture content of the biomass solid fuel stored in the storage step S130 may be adjusted by spraying water on the biomass solid fuel stored in the storage step S130. The specific method of watering is not limited, but for example, rainfall as described above may be utilized, or water may be sprayed using an automatic watering device, a sprinkler, or the like.

[0050] In the storage moisture adjusting step S131, the moisture content of the biomass solid fuel stored in the storage step S130 may be adjusted depending on the season in which the storage step S130 is performed.

[0051] As explained in the moisture adjustment process during transportation S123, in the moisture adjustment process during storage S131, adjusting the moisture content to increase in winter (low humidity environment) can, for example, reduce the possibility of powdering due to drying of the solid fuel and the resulting dust explosion, and adjusting the moisture content to decrease in summer (high humidity environment) can, for example, suppress quality deterioration such as poor ignition due to excessive moisture content in the solid fuel.

[0052] The moisture content of the biomass solid fuel stored in the storage process S130 may be based on, for example, an actually measured value (actual measured value), or may be a predicted value (predicted value) based on, for example, the moisture content measured at any time after the end of the production process S110 and the environment in the storage process S130. The environment in the storage step S130 may be, for example, at least one of the season, temperature, and humidity in which the storage step S130 is performed.

[0053] That is, in the moisture content adjustment step S131 during storage, if the measured or predicted moisture content of the biomass solid fuel during storage is outside a predetermined moisture content range or is expected to be outside the range, the moisture content of the biomass solid fuel to be transported in the storage step S130 may be adjusted. The predetermined moisture content range may be, for example, from 5% by mass to 25% by mass.

[0054] Although one embodiment of the present disclosure has been described in detail above with reference to the drawings, the specific configuration is not limited to this embodiment, and configuration changes, combinations, deletions, etc. are also included within the scope that does not deviate from the gist of the present disclosure.

[0055] (Addendum) The moisture adjustment method for biomass solid fuel according to the embodiment can be understood, for example, as follows.

[0056] <1> A method for adjusting moisture content of biomass solid fuel according to one aspect of the present disclosure includes a manufacturing process for manufacturing biomass solid fuel using carbonized biomass, a transporting process for transporting the biomass solid fuel manufactured in the manufacturing process, and a moisture adjustment process during the transporting process for adjusting the moisture content of the biomass solid fuel transported in the transporting process. If the moisture content of biomass solid fuel is too high, the combustion efficiency will decrease, while if the moisture content is too low, problems will arise such as dust generation and spontaneous combustion as the fuel dries. With the above configuration, by adjusting the moisture content of the biomass solid fuel during transportation, it is possible to maintain an appropriate moisture content of the biomass solid fuel during transportation, thereby preventing the occurrence of the above problems.

[0057] <2> the above <1> In the method for adjusting moisture content of a biomass solid fuel, the biomass solid fuel produced in the production step may be transported over land in the transporting step. With this configuration, the biomass solid fuel can maintain an appropriate moisture content during transportation, and since the biomass solid fuel can be transported by land, a variety of transportation methods can be selected, such as truck or rail.

[0058] <3> the above <1> In the moisture adjustment method for biomass solid fuel, in the moisture adjustment step during transportation, a preventive means may be used to prevent the biomass solid fuel transported in the transportation step from coming into contact with rainwater, and the moisture content of the biomass solid fuel transported in the transportation step may be adjusted. With this configuration, by using the prevention means, it is possible to reliably prevent the moisture content of the biomass solid fuel transported in the land transportation step from increasing excessively.

[0059] <4> the above <2> or <3> In the moisture adjustment method for biomass solid fuel, the moisture content of the biomass solid fuel transported in the transportation process may be adjusted by spraying water on the biomass solid fuel transported in the transportation process. With this configuration, by spraying water on the solid fuel, it is possible to reliably prevent the moisture content of the biomass solid fuel transported in the land transportation step from becoming excessively low.

[0060] <5> the above <1> from <4> In any one of the methods for adjusting moisture content of a biomass solid fuel, the transporting step may involve transporting the biomass solid fuel produced in the producing step by sea. With this configuration, the solid fuel is transported by sea, making it possible to transport large quantities of biomass solid fuel at low cost.

[0061] <6> the above <5> In the moisture adjustment method for biomass solid fuel, in the moisture adjustment step during transportation, a preventive means may be used to prevent the biomass solid fuel transported in the transportation step from coming into contact with rainwater, and the moisture content of the biomass solid fuel transported in the transportation step may be adjusted. With this configuration, by using the prevention means, it is possible to reliably prevent the moisture content of the biomass solid fuel transported in the marine transportation process from increasing.

[0062] <7> the above <5> or <6> In the moisture adjustment method for biomass solid fuel, the moisture content of the biomass solid fuel transported in the transportation process may be adjusted by spraying water on the biomass solid fuel transported in the transportation process. With this configuration, by spraying water on the solid fuel, it is possible to reliably prevent the moisture content of the biomass solid fuel transported in the marine transportation process from becoming excessively low.

[0063] <8> the above <1> from <7> In any of the methods for adjusting moisture content of biomass solid fuel, the moisture content of the biomass solid fuel transported in the transportation step may be adjusted in the transportation moisture adjustment step in accordance with the moisture content of the biomass solid fuel transported in the transportation step. With this configuration, the moisture content of the biomass solid fuel can be adjusted more accurately by adjusting the moisture content of the biomass solid fuel in accordance with the current moisture content of the biomass solid fuel.

[0064] <9> the above <1> from <8> In any of the methods for adjusting moisture content of biomass solid fuel, the moisture content of the biomass solid fuel transported in the transportation moisture adjustment step may be adjusted depending on the season in which the transportation step is performed. The moisture content of solid fuel during the transportation process tends to decrease in winter and increase in summer. For example, in the moisture adjustment process during transportation, adjusting the moisture content to increase in winter (low humidity environment) can reduce the possibility of powdering due to drying of the solid fuel and the resulting dust explosion, while adjusting the moisture content to decrease in summer (high humidity environment) can suppress quality deterioration such as poor ignition due to excessive moisture in the solid fuel.

[0065] <10> the above <1> from <9> Any of the methods for adjusting moisture content of biomass solid fuel may further include a storage step of storing the biomass solid fuel transported in the transportation step, and a moisture content adjustment step during storage of adjusting the moisture content of the biomass solid fuel stored in the storage step. If the moisture content of biomass solid fuel is too high, the combustion efficiency will decrease, while if the moisture content is too low, problems will arise such as dust generation and spontaneous combustion as the fuel dries. With the above configuration, by adjusting the moisture content of the biomass solid fuel during storage, it is possible to maintain an appropriate moisture content of the biomass solid fuel during storage, thereby preventing the occurrence of the above problems.

[0066] <11> the above <1> from <10> In any of the moisture adjustment methods for biomass solid fuels, in the moisture adjustment step during storage, a preventive means may be used to prevent the biomass solid fuel stored in the storage step from coming into contact with rainwater, and the moisture content of the biomass solid fuel stored in the storage step may be adjusted. With this configuration, by using the prevention means, it is possible to reliably prevent the moisture content of the biomass solid fuel stored in the storage step from increasing.

[0067] <12> the above <1> from <11> In any of the moisture adjustment methods for biomass solid fuel, the moisture content of the biomass solid fuel stored in the storage step may be adjusted in the storage moisture adjustment step according to the moisture content of the biomass solid fuel stored in the storage step. With this configuration, the moisture content of the biomass solid fuel can be adjusted more accurately in the storage moisture adjustment process by adjusting the moisture content of the biomass solid fuel according to the current moisture content of the biomass solid fuel.

[0068] <13> the above <1> from <12> Any of the methods for adjusting moisture content of biomass solid fuel may further include, during the production step, an in-production moisture adjustment step of adjusting the moisture content of the biomass solid fuel produced in the production step. With this configuration, by adjusting the moisture content of the biomass solid fuel during production, it is possible to produce biomass solid fuel with an appropriate moisture content, thereby improving combustion efficiency, improving strength and shape stability, preventing dust generation, and preventing collapse during transportation.

[0069] <14> A method for adjusting moisture content of biomass solid fuel according to one aspect of the present disclosure includes: a production process for producing biomass solid fuel using carbonized biomass; a marine transportation process for transporting the biomass solid fuel produced in the production process by sea; a land transportation process for transporting the biomass solid fuel transported by sea in the marine transportation process by land; and a storage process for storing the biomass solid fuel transported in the land transportation process. and during the production process, a moisture adjustment process during production is included to adjust the moisture content of the biomass solid fuel produced in the production process; during the marine transportation process, a moisture adjustment process during marine transportation is included to adjust the moisture absorbed by the biomass solid fuel transported in the marine transportation process in accordance with the moisture content of the biomass solid fuel transported in the marine transportation process; during the land transportation process, a moisture adjustment process during land transportation is included to adjust the moisture absorbed by the biomass solid fuel transported in the land transportation process in accordance with the moisture content of the biomass solid fuel transported in the land transportation process; and during the storage process, a moisture adjustment process during storage is included to adjust the moisture absorbed by the biomass solid fuel stored in the storage process in accordance with the moisture content of the biomass solid fuel stored in the storage process. [Explanation of symbols]

[0070] S110 manufacturing process S111 Moisture adjustment process during manufacturing S120 Transportation process S121 Land transportation process S122 Marine transportation process S123 Moisture adjustment process during transportation S123a Moisture adjustment process during land transportation S123b Moisture adjustment process during sea transportation S130 Storage process S131 Storage moisture adjustment process

Claims

1. a manufacturing process for producing biomass solid fuel using the carbonized biomass; a transporting step of transporting the biomass solid fuel produced in the production step; a moisture content adjustment step during transportation of the biomass solid fuel transported in the transportation step, Equipped with In the moisture adjustment step during transportation, a preventive means is used to prevent the biomass solid fuel transported in the transportation step from coming into contact with rainwater, and the moisture content of the biomass solid fuel transported in the transportation step is adjusted. A method for adjusting moisture content of biomass solid fuel.

2. In the transportation step, the biomass solid fuel produced in the production step is transported by sea. The method for adjusting moisture content of biomass solid fuel according to claim 1 .

3. In the transportation step, the biomass solid fuel produced in the production step is transported by land. The method for adjusting moisture content of biomass solid fuel according to claim 1 .

4. The prevention means includes a waterproof sheet or a bag. The method for adjusting moisture content of biomass solid fuel according to claim 1 .

5. The prevention means further prevents the biomass solid fuel from drying out by covering the biomass solid fuel. The method for adjusting moisture content of biomass solid fuel according to claim 1 .

6. A manufacturing process for producing biomass solid fuel using carbonized biomass; a transporting step of transporting the biomass solid fuel produced in the production step; a moisture content adjustment step during transportation of the biomass solid fuel transported in the transportation step, Equipped with In the moisture adjustment step during transportation, the moisture content of the biomass solid fuel transported in the transportation step is adjusted according to the season in which the transportation step is performed; In the transportation moisture adjustment step, when the season in which the transportation step is performed is a first season, the moisture content of the biomass solid fuel transported in the transportation step is adjusted to a first moisture content; In the moisture adjustment step during transportation, when the season in which the transportation step is performed is a second season different from the first season, the moisture content of the biomass solid fuel transported in the transportation step is adjusted to a second moisture content different from the first moisture content. A method for adjusting moisture content of biomass solid fuel.

7. a manufacturing process for producing biomass solid fuel using the carbonized biomass; a marine transportation step of transporting the biomass solid fuel produced in the production step by sea; a land transportation step of transporting the biomass solid fuel transported by sea in the sea transportation step by land; a storage step of storing the biomass solid fuel transported in the land transportation step, During the production process, a moisture adjustment process is included in which the moisture content of the biomass solid fuel produced in the production process is adjusted, During the marine transportation step, a moisture adjustment step is included in which moisture absorbed by the biomass solid fuel transported in the marine transportation step is adjusted according to the moisture content of the biomass solid fuel transported in the marine transportation step, and a land transportation moisture adjustment step of adjusting moisture absorbed by the biomass solid fuel transported in the land transportation step in accordance with the moisture content of the biomass solid fuel transported in the land transportation step, during the land transportation step; During the storage step, a moisture adjustment step is included in which moisture absorbed by the biomass solid fuel stored in the storage step is adjusted according to the moisture content of the biomass solid fuel stored in the storage step. A method for adjusting moisture content of biomass solid fuel.

8. In the moisture adjustment step during transportation, water is sprayed onto the biomass solid fuel transported in the transportation step, thereby adjusting the moisture content of the biomass solid fuel transported in the transportation step. The method for adjusting moisture content of biomass solid fuel according to claim 1 or 6.

9. In the moisture adjustment step during transportation, a preventive means is used to prevent the biomass solid fuel transported in the transportation step from coming into contact with rainwater, and the moisture content of the biomass solid fuel transported in the transportation step is adjusted. The method for adjusting moisture content of biomass solid fuel according to claim 6.

10. 10. The method for adjusting moisture content of biomass solid fuel according to claim 1 or 6, wherein in the moisture adjustment step during transportation, the moisture content of the biomass solid fuel transported in the transportation step is adjusted in accordance with the moisture content of the biomass solid fuel transported in the transportation step.

11. 2. The method for adjusting moisture content of biomass solid fuel according to claim 1, wherein the moisture content of the biomass solid fuel transported in the transportation step is adjusted according to the season in which the transportation step is performed.

12. a storage step of storing the biomass solid fuel transported in the transport step; a moisture content adjustment step during storage, in which the moisture content of the biomass solid fuel stored in the storage step is adjusted during the storage step; The method for adjusting moisture content of biomass solid fuel according to claim 1 or 6, further comprising:

13. In the moisture adjustment step during storage, a preventive means is used to prevent the biomass solid fuel stored in the storage step from coming into contact with rainwater, and the moisture content of the biomass solid fuel stored in the storage step is adjusted. The method for adjusting moisture content of biomass solid fuel according to claim 12.

14. 13. The moisture adjustment method for biomass solid fuel according to claim 12, wherein in the moisture adjustment step during storage, the moisture content of the biomass solid fuel stored in the storage step is adjusted in accordance with the moisture content of the biomass solid fuel stored in the storage step.

15. a moisture content adjustment step during the production step, in which the moisture content of the biomass solid fuel produced in the production step is adjusted; The method for adjusting moisture content of biomass solid fuel according to claim 1 or 6, further comprising:

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