WO2018135660A1 - Production method for solid fuel, solid fuel production system, and solid fuel - Google Patents

Abstract

The production method for a solid fuel according to one aspect of the present invention comprises: a spray step for spraying heated oil over fragments of solid biomass so as to impregnate the solid biomass fragments with the oil; and a molding step for subjecting the solid biomass fragments impregnated with the oil to compaction molding so as to produce a solid fuel.

Description

Solid fuel manufacturing method, solid fuel manufacturing system, and solid fuel Cross-reference to related applications

This international application claims priority based on Japanese Patent Application No. 2017-009573 filed with the Japanese Patent Office on January 23, 2017, and the Japanese Patent Application No. 2017-009573 The entire contents are incorporated into this international application by reference.

The present disclosure relates to solid fuel production methods and systems, and solid fuels.

In recent years, power generation using renewable energy sources has attracted attention. Biomass fuel is one of the renewable energy sources. As a biomass fuel, a solid fuel produced by mixing a wood material and oil is known (see Patent Document 1).

Japanese Patent Application Laid-Open No. 50-129601

In the prior art, woody materials are introduced into a mixture of oil and adhesive contained in a tank to make the woody materials penetrate with oil. For this reason, in the prior art, it is difficult to adjust the penetration amount of oil in the wood material.

Therefore, according to one aspect of the present disclosure, it is desirable to be able to provide a method and apparatus capable of producing solid fuel by appropriately adjusting the amount of oil penetration.

According to one aspect of the present disclosure, a heated oil is sprayed onto a piece of solid biomass, and a spraying step of permeating the oil into the piece of solid biomass, and compression molding of the piece of solid biomass into which the oil has penetrated Thus, there is provided a method of producing a solid fuel comprising the steps of: forming a solid fuel.

According to the process of permeating oil to pieces of solid biomass by spraying of heated oil, the amount of permeation of oil to solid biomass is properly adjusted rather than the process of impregnating pieces of solid biomass into oil in a tank Solid fuel can be produced. For example, by adjusting parameters such as spray amount / spray speed / spray time, the amount of oil penetration can be appropriately adjusted to produce a solid fuel. Therefore, according to the solid fuel manufacturing method according to one aspect of the present disclosure, it is possible to manufacture an appropriate solid fuel.

According to another aspect of the present disclosure, the method of producing a solid fuel may include the step of producing solid pieces of biomass by grinding solid biomass before the spraying step. The method of producing a solid fuel may include the step of drying solid biomass before the spraying step. In addition to enhancing the combustion efficiency of solid fuel, drying helps to improve oil permeability and control oil penetration. According to an example, in the drying step, the solid biomass may be dried to a water content ratio corresponding to the target permeation amount of oil in the spraying step. Alternatively, the drying step may include the step of lowering the target water content ratio as the target permeation amount increases, and drying the solid biomass until the target water content ratio is reached.

According to another aspect of the present disclosure, the spraying step may include moving the pieces of solid biomass to change the arrangement of pieces of solid biomass. The spraying step may include spraying the heated oil on the moved solid biomass pieces to infiltrate the oil into the solid biomass pieces. For example, the spraying step may include a step of spraying the heated oil while agitating the solid biomass pieces to allow the oil to permeate the solid biomass pieces. According to the oil spray accompanied by stirring, the oil can be uniformly permeated into the pieces of solid biomass.

According to another aspect of the present disclosure, a method of producing a solid fuel may include the step of adding to the solid biomass a promoter that promotes the penetration of oil into the solid biomass. Examples of promoters may include surfactants. The promoter helps to improve the permeability of the oil in the spraying process.

According to another aspect of the present disclosure, the method of producing a solid fuel may further include the step of adding a resin to the oil impregnated solid biomass pieces. The forming step may include the step of producing a solid fuel by compression-molding a piece of solid biomass to which a resin is added.

According to one example, the resin helps maintain the shape of the solid fuel after compression molding. The resin may be a resin having a melting point that is solid without melting when stored and transported in solid fuel.
The spraying step may include the step of controlling the penetration of oil into solid biomass by controlling the spraying of oil. The forming step may include the step of producing a solid fuel by compacting solid biomass in which the permeation amount of oil is controlled.

The spraying step may include the step of controlling the permeation amount of oil in the solid biomass so that the combustion temperature of the solid fuel falls within the range of 1000 ° C. to 1200 ° C. Small scale biomass boilers assume combustion temperatures of about 1000 ° C to 1200 ° C. Therefore, according to the method for producing a solid fuel including the above-mentioned spraying step, a solid fuel usable in a small scale biomass boiler can be produced.

The above-mentioned solid biomass may be plant biomass. Plant-based biomass includes at least one of wood-based biomass and non-wood-based biomass. Examples of woody biomass include forest residues and lumber scraps. Examples of non-woody biomass include rice husk and coconut husk. The oil may be, for example, a vegetable oil such as palm oil or coconut oil.

The spraying step may include the step of controlling the penetration amount of the vegetable oil to the vegetable biomass so that the content of the vegetable oil in the vegetable biomass falls within the range of 5% by weight to 35% by weight. The spraying step may include a step of controlling the penetration amount of the vegetable oil to the vegetable biomass so that the weight ratio of the vegetable oil to the vegetable biomass is 30% or less.

According to another aspect of the present disclosure, in the spraying step, oil may be sprayed onto the pieces of solid biomass so that the spray amount increases as the moisture content ratio of the solid biomass decreases.
According to another aspect of the present disclosure, a heated apparatus is sprayed on a solid biomass segment to spray the oil into the solid biomass segment, and compression molding is performed on the oil-impregnated solid biomass segment. Thus, there may be provided a solid fuel production system comprising: a forming device for producing solid fuel. The solid fuel production system may be configured to produce solid fuel by any of the production methods described above.

According to another aspect of the present disclosure, there may be provided a solid fuel comprising a piece of solid biomass and an oil infiltrated into the piece of solid biomass. The solid fuel may be a compression-molded body of oil impregnated solid biomass pieces. The permeation amount of oil in solid biomass may be such that the combustion temperature of solid fuel falls within the range of 1000 ° C. to 1200 ° C.

According to another aspect of the present disclosure, there may be provided a solid fuel comprising a segment of plant-based biomass containing at least one of woody and non-wood-based and a vegetable oil infiltrated into the segment of plant-based biomass . The solid fuel may be a compression-molded body of plant biomass fragments into which vegetable oil has penetrated. The vegetable oil content in the vegetable biomass may be in the range of 5% by weight to 35% by weight. A solid fuel having a weight ratio of vegetable oil to vegetable biomass of 30% or less may be provided.

FIG. 1 is a block diagram showing the configuration of a solid fuel production system. FIG. 2 is a flow chart showing a solid fuel production process. FIG. 3 is a diagram illustrating an oil spray configuration for solid biomass. FIG. 4 is an explanatory view of intermittent spraying. 5A and 5B are graphs showing the relationship between weight ratio and calorific value. 6A and 6B are graphs showing the calorific value per unit amount when it is assumed that the combustion body is only oil. FIG. 7 is a view for explaining a modification in which oil is sprayed onto the transport belt.

DESCRIPTION OF SYMBOLS 1 ... Solid fuel manufacturing system, 10 ... Drying machine, 20 ... Pulverizer, 30 ... 1st processing apparatus, 31 ... Tank, 32 ... Stirrer, 33 ... Spraying apparatus, 33A, 33B ... Spraying mechanism, 34 ... Heating apparatus , 35: Discharge device, 39: Controller, 40: Second processing device, 50: Pelletizer, 61: Transport belt, 63: Spraying device, 65: Mechanical device.

In the following, exemplary embodiments of the present disclosure will be described with reference to the drawings.
As shown in FIG. 1, the solid fuel production system 1 according to the present embodiment includes a dryer 10, a crusher 20, a first processing device 30, a second processing device 40, and a pelletizer 50. This system 1 is configured to produce a solid fuel M3 according to the production process shown in FIG.

The dryer 10 is configured to dry the solid biomass M1 input as a fuel source. Drying may be performed, for example, using warm air. In the first step (S1) of the manufacturing process (see FIG. 2) of the present embodiment, the solid biomass M1 is dried by the dryer 10 to a target water content ratio, for example, a water content ratio of 5%.

The solid biomass M1 input to the dryer 10 is a plant-based biomass including at least one of a wood-based biomass and a non-wood-based biomass. Examples of woody biomass include forest residues and lumber scraps, and examples of non-woody biomass include coconut husk and rice husk.

Specifically, the solid biomass M1 may be an aggregate of roughly crushed wood, an aggregate of raw, semi-dried or completely dried vegetables, or rice husk It may be an aggregate of grains such as coconut shell and the like.

The solid biomass M1 dried by the dryer 10 is introduced into the grinder 20. The solid biomass M1 which has already been dried to the target water content ratio before being introduced into the dryer 10 can be introduced into the pulverizer 20 without the intervention of the dryer 10.

The grinder 20 is configured to grind the input solid biomass M1 to generate pieces of the solid biomass M1. Each of the fragments referred to here may be a part, a piece or a grain of physically, mechanically or chemically degraded solid biomass M1. Generating the pieces of solid biomass M1 may be to generate powder of solid biomass M1.

As shown in FIG. 2, in the second step (S2) of the manufacturing process, the solid biomass M1 is pulverized using the pulverizer 20. The solid biomass M1 is crushed, fragmented, or pulverized into pieces of about 5 mm or less in order to uniformly permeate the oil M2 into the pieces of the crushed solid biomass M1. Is preferred. The pieces of solid biomass M1 generated through drying and grinding are introduced into the first processing device 30. As another example, solid biomass M1 may be ground in the first step (S1) of the manufacturing process and then dried in the second step (S2).

The first processing apparatus 30 is configured to spray the heated oil M2 on the segment of the input solid biomass M1 to permeate the oil M2 into the segment of the solid biomass M1. In the third step (S3) of the manufacturing process, the first treatment device 30 performs a process of spraying the heated oil M2 onto the pieces of solid biomass M1 and permeating the oil M2 into the pieces of solid biomass M1 . The third step (S3) includes a process of spraying oil M2 while stirring a piece of solid biomass M1 and a process of controlling the permeation amount of oil M2 in solid biomass M1. Agitation of the pieces of solid biomass M1 corresponds to moving so that the arrangement of pieces of solid biomass M1 changes, and contributes to the permeation of the equivalent oil M2 into the pieces of solid biomass M1.

Specifically, the first processing device 30 includes a tank 31, a stirrer 32, a spraying device 33, a heating device 34, a discharging device 35, and a controller 39.
The pieces of the solid biomass M <b> 1 input to the first treatment device 30 are accommodated in the tank 31. The agitator 32 is configured to agitate the fragments of the solid biomass M <b> 1 stored in the tank 31 in the tank 31. At the time of stirring, the misty oil M2 is sprayed from the spraying device 33 to the solid biomass M1. The oil M2 to be sprayed is a vegetable oil. Examples of vegetable oils include palm oil, coconut oil and vegetable oils. The oil M2 may be a combination of multiple types of vegetable oils.

The spraying device 33 is configured to spray the oil M2 heated by the heating device 34 onto the fragments of the solid biomass M1 stirred in the tank 31, as shown in FIG. The heating device 34 is configured to provide the spray device 33 with the oil M2 heated to the set temperature. The set temperature is not limited, but is, for example, a temperature of 65 ° C. to 200 ° C. By heating, the viscosity of the oil M2 decreases, and the oil M2 disperses uniformly at the time of spraying. By the spraying and stirring, the oil M2 uniformly penetrates the solid biomass M1 pieces.

The spray amount of oil M2 may be adjusted according to the amount of solid biomass M1 receiving oil M2. The spraying amount may be further adjusted according to the water content ratio of the solid biomass M1. The oil M2 may be sprayed continuously or intermittently to the stirred solid biomass M1. The oil M2 may be sprayed periodically, for example, at intervals of 3 to 5 seconds. In the intermittent spraying, as shown in FIG. 4, the spraying device 33 is controlled so that the operation of injecting the oil M2 and the operation of temporarily stopping the injection are alternately performed.

The pieces of the solid biomass M1 in which the oil M2 has penetrated in the tank 31 by spraying are discharged from the tank 31 by the discharge device 35 and are introduced into the second processing device 40.
The controller 39 of the first processing device 30 is configured to control the agitator 32, the spray device 33, the heating device 34, and the discharge device 35. Specifically, the controller 39 controls the agitator 32, the spray device 33, the heating device 34, and the discharge device 35 so that the combustion temperature at the time of power generation of the solid fuel M3 (pellet) manufactured becomes the target temperature range. Control. This control includes control of the spraying time and the spraying amount per unit time of the oil M2, and the stirring time and speed.

In order to produce the solid fuel M3 so that the combustion temperature is in the target temperature range, the amount of oil M2 in the solid biomass M1 may be controlled. The controller 39 controls the spraying time and the spraying amount per unit time of the oil M2 and the stirring time and speed so that the permeation amount of the oil M2 in the solid biomass M1 corresponds to the target temperature range. Can.

The heat-resistant temperature of the furnace which a small scale biomass boiler has is less than 2000 ° C. Therefore, the combustion temperature of the solid fuel M3 is preferably in the range of 1000 ° C. to 1200 ° C. Therefore, in the third step (S3), the permeation amount of the oil M2 in the solid biomass M1 can be controlled, for example, so that the combustion temperature of the solid fuel M3 falls within the range of 1000 ° C to 1200 ° C.

The first treatment device 30 controls the spraying of the oil M2 to penetrate the solid biomass M1 into pieces of the solid biomass M1 when the amount of the oil M2 corresponding to the target temperature range permeates into the pieces of the solid biomass M1. The pieces are discharged, and the pieces of the solid biomass M1 after oil penetration are introduced into the second processing device 40.

The second processing apparatus 40 is configured to add and discharge a resin to the piece of solid biomass M1 input from the first processing apparatus 30. In the fourth step (S4) of the manufacturing process, the second processing device 40 performs a process of adding a resin to the segment of the solid biomass M1 in which the oil M2 has permeated.

The resin added to the solid biomass M1 piece functions as a shape-retaining agent and an adhesive when pelletizing the solid biomass M1 piece. Specifically, for the resin added to the solid biomass M1, a resin having a melting point of 60 ° C. or higher can be used so that the resin does not melt during storage and transportation. For example, vegetable resin, especially vegetable resin containing cellulose can be used as resin added to the piece of solid biomass M1.

The second processing apparatus 40 can add the resin so as to cover the surface of the solid biomass M1 piece into which the oil M2 has penetrated by stirring the melted resin and the solid biomass M1 piece. The second processing apparatus 40 is configured to supply the pellet of the solid biomass M1 to which the resin is added to the pelletizer 50.

The pelletizer 50 is configured to pelletize the pieces of the solid biomass M1 to which the above-described resin supplied from the second processing apparatus 40 is added by compression molding, specifically by extrusion. In the fifth step (S5) of the manufacturing process, the pieces of the solid biomass M1 to which the oil M2 penetrates and the resin is applied are pelletized by compression molding to produce a solid fuel M3. The pellet which is a compression molded body of the piece of solid biomass M1 generated by the pelletizer 50 is discharged as solid fuel M3 and stored in a storage bag or box.

As can be understood from the above description, the solid fuel M3 produced by the solid fuel production system 1 is a compression molded body of a solid biomass M1 piece to which the oil M2 penetrates and the resin is applied. In particular, the solid fuel M3 is configured as a compact of plant-based biomass into which a vegetable oil has penetrated.

The solid fuel M3 composed of plant biomass and plant oil is effective as a renewable energy source because the whole is biomass. The energy generated by the fuel of this solid fuel M3 is used, for example, for power generation.

As described above, according to the present embodiment, the solid fuel M3 combustible within the temperature range in which the existing small-scale biomass boiler has resistance is controlled by controlling the penetration amount of the oil M2, and the calorific value per weight is high. It is possible to produce a solid fuel M3 that can realize efficient power generation.

Moreover, the electric energy generated by the power generation can be sold in Japan using a fixed price purchase system of renewable energy. Therefore, according to the present embodiment, it is possible to provide a solid fuel production system 1 and a solid fuel M3 that help to spread renewable energy.

In addition, the solid fuel M3 is preferably produced so that the vegetable oil content as the oil M2 is in the range of 5% by weight to 35% by weight. Such solid fuel M3 can be used for small-scale biomass boilers because the combustion temperature is in the range of 1000 ° C. to 1200 ° C. Furthermore, in order to make effective use of the heat of solid biomass M1, solid fuel M3 is such that the weight ratio of oil M2 to solid biomass M1 is 30% or less within the range that satisfies the required heat value. It is preferable to be manufactured.

5A and 5B graphically show the relationship between the weight ratio k of the oil M2 to the solid biomass M1 in the solid fuel M3 and the calorific value Y per unit amount of the solid fuel M3. Theoretically, the calorific value Y is expressed by the following equation.

Y = (Q1 · W1 + Q2 · W2) / (W1 + W2)
= (Q1 + k · Q2) / (1 + k)
=-(Q2-Q1) / (1 + k) + Q2
Here, “·” is a multiplication symbol and “/” is a division symbol. “Q1” is the calorific value per unit weight of the solid biomass M1, and “Q2” is the calorific value per unit weight of the oil M2. W1 is the weight of solid biomass M1 contained in solid fuel M3, and W2 is the weight of oil M2 contained in solid fuel M3. The weight ratio k is k = W2 / W1.

The square points shown in FIGS. 5A and 5B have a weight ratio k indicated by the horizontal axis, and the calorific value Q1 = 4330 cal / g as an example of the solid biomass M1 and the calorific value Q2 as an example of the oil M2 It represents the calorific value Y measured when the first sample containing 8630 cal / g of coconut oil was fueled.

The circular points shown in FIG. 5A are corn having a calorific value Q1 = 3989 cal / g as solid biomass M1 and a coconut oil with calorific value Q2 = 8630 cal / g as oil M2 at a weight ratio k indicated by the horizontal axis. And represents the calorific value Y measured when the second sample containing the fuel is fueled.

The circular point shown in FIG. 5B is the weight ratio k indicated by the horizontal axis, and the calorific value Q1 = 4330 cal / g of wood as solid biomass M1 and the vegetable oil of calorific value Q2 = 3700 cal / g as oil M2 And represents the calorific value Y measured when the third sample containing the fuel is fueled. To measure the calorific value, a digital calorimeter, specifically, Ogawa Sampling Corporation O. S. K 200 was used.

FIG. 6A and FIG. 6B show the calorific value Z when assuming that the above-mentioned sample consists only of oil M2, on a graph having a horizontal axis of weight ratio k. Theoretically, the calorific value Z is expressed by the following equation.
Z = (Q1 · W1 + Q2 · W2) / W2
= (Q1 + k · Q2) / k
= (Q1 / k) + Q2
The square points shown in FIGS. 6A and 6B convert the heat generation amount Y corresponding to the square points shown in FIGS. 5A and 5B into the heat generation amount Z according to the conversion equation Z = Y · (W1 + W2) / W2. The calorific value Z of the time is shown. Similarly, the circular points shown in FIG. 6A indicate the calorific value Z when the calorific value Y corresponding to the circular point shown in FIG. 5A is converted according to the above conversion formula. The circular points shown in FIG. 6B indicate the calorific value Z when the calorific value Y corresponding to the circular point shown in FIG. 5B is converted according to the above conversion formula.

It can be understood from FIGS. 6A and 6B that with regard to heat generation of solid fuel M3, when the weight ratio of oil M2 to solid biomass M1 is 30% or less, the contribution of solid biomass M1 to heat generation sharply increases. That is, by suppressing the weight ratio of the oil M2 to the solid biomass M1 to 30% or less, it is possible to produce the solid fuel M3 that can effectively utilize the solid biomass M1, for example, transport efficiency, production efficiency and heat generation efficiency Solid fuel M3 can be produced.

The above graph shows an example where the oil M2 is coconut oil and vegetable oil. However, palm oil or other vegetable oil may be used as the oil M2, and in this case also, for the same reason, the solid fuel M3 has a weight ratio of the oil M2 to the solid biomass M1 of 30% or less. Preferably it is manufactured. When a high calorific value is required for the solid fuel M3, it is particularly advantageous to use at least one of palm oil and coconut oil having a high calorific value as the oil M2.

The solid fuel production system 1 and production method of the present embodiment and the solid fuel M3 using biomass have been described above, but the present disclosure is not limited to the above embodiment, and various aspects may be taken. it can.

For example, in the drying step (S1) of the solid biomass M1, the solid biomass M1 can be dried to a water content ratio according to the target permeation amount of the oil M2 with respect to the solid biomass M1. That is, in the first step (S1), as the target permeation amount of the oil M2 increases, the target water content ratio can be lowered to dry the solid biomass M1 until the target water content ratio is reached. According to the drying step (S1), as the target permeation amount increases, the solid biomass M1 is dried well, and the oil permeability in the solid biomass M1 is increased. Therefore, the processing efficiency in the first processing apparatus 30 is enhanced.

The amount of spraying of oil M2 in a spraying process (S3) may be adjusted according to the quantity of solid biomass M1 of spraying object, and the moisture content of solid biomass M1. The spray amount may be adjusted to a larger amount as the water content ratio is smaller (the solid biomass M1 is more dry). In other words, the spray amount can be adjusted to a smaller amount as the water content ratio is larger. Information on the water content ratio may be input to the controller 39 of the first processing apparatus 30 by the operation of the worker, or may be input to the controller 39 from a sensor capable of detecting the water content ratio of the solid biomass M1. A sensor may be provided, for example, in the dryer 10 and / or the first processing device 30. The water content ratio may be estimated from the weight per volume of solid biomass M1.

The first treatment device 30 may be configured to add an accelerator that promotes the penetration of the oil M2 to the solid biomass M1 simultaneously with the spraying of the oil M2 and / or before and after the spraying of the oil M2. For example, the spray device 33 may be configured to include the spray mechanism 33A of the oil M2 and the spray mechanism 33B of the promoter. Examples of promoters include surfactants. The addition of the promoter increases the permeability (penetration rate) of the oil, and the solid biomass M1 can be efficiently permeated with the oil M2 to the target permeation amount.

The oil M2 penetrated by the solid biomass M1 may be a non-vegetable oil. The solid biomass M1 may be impregnated at least in part with an oil that does not correspond to a renewable energy source. The control of the penetration amount of oil M2 is not limited to the control for realizing the above-mentioned fuel temperature or the content of oil M2.

The pieces of solid biomass M1 generated by grinding may be disposed on the conveyance belt 61 shown in FIG. 7, and the elements of the solid biomass M1 on the conveyance belt 61 may be disposed between the start point and the end point of the conveyance belt 61. A plurality of spraying devices 63 that spray oil M2 from above onto the piece may be provided along the transport belt 61. The spraying device 63 can receive the supply of the heated oil M2 from the heating device 34.

Along the transport belt 61, a plurality of mechanical devices 65 alternately arranged with the spraying device 63 change the arrangement of the pieces of solid biomass M1 and spray oil M2 uniformly on the pieces of solid biomass M1. It may be provided to

The mechanical device 65 applies mechanical action to the pieces of the solid biomass M1 so that the orientation and position of each front and back of the pieces on the transport belt 61 change at random, similarly to the stirrer 32. it can. For example, the mechanical device 65 may be a device that applies vibration to the transport belt 61 so that the pieces on the transport belt 61 are turned over, or may be configured to incline the transport belt 61. The transport belt 61 may be configured to have a height difference. In this case, the piece of the solid biomass M1 transported by the transport belt 61 may change in position due to the height difference.

The transport belt 61, the spray device 63 and the mechanical device 65 may be provided in the first processing device 30 instead of the tank 31, the spray device 33 and the stirrer 32. The transport belt 61, the spray device 63 and the mechanical device 65 may be provided instead of the discharge device 35. The transport belt 61 may be configured to transport the pieces of the solid biomass M1 to the second processing device 40.

Besides, spraying of the solid biomass M1 into the oil M2 may be performed under a low pressure environment in order to promote the penetration of the oil M2 into the solid biomass M1. After spraying, the pressure acting on the infiltrated solid biomass M1 of the oil M2 is increased by eliminating the low pressure environment, and it is conceivable that the oil M2 penetrates further into the solid biomass M1. The oil M2 may be encapsulated with a resin or the like so that the oil M2 is not sticky on the surface of the solid biomass M1.

The functions of one component in the above embodiment may be distributed to a plurality of components. The functions of multiple components may be integrated into one component. A part of the configuration of the above embodiment may be omitted. At least a part of the configuration of the above embodiment may be added to or replaced with the configuration of the other above embodiments. All aspects included in the technical concept specified from the wording described in the claims are an embodiment of the present disclosure.

Claims (15)

Spraying the heated oil onto the solid biomass pieces to cause the oil to permeate the solid biomass pieces;
Forming a solid fuel by compression-molding the pieces of the solid biomass into which the oil has penetrated;
Of producing solid fuel including: The method for producing a solid fuel according to claim 1, further comprising: a step of producing pieces of the solid biomass by grinding the solid biomass before the spraying step. And drying the solid biomass before the spraying step.
The method for producing a solid fuel according to claim 1 or 2, wherein the oil is sprayed on the dried solid biomass pieces. The spraying step moves the pieces of the solid biomass so as to change their arrangement, and sprays the heated oil on the moved pieces of the solid biomass to move the pieces of the solid biomass to the oil. The method for producing a solid fuel according to any one of claims 1 to 3, further comprising the step of infiltrating. The solid fuel according to any one of claims 1 to 4, wherein the spraying step includes a step of spraying the heated oil while agitating the solid biomass pieces and infiltrating the oil into the solid biomass pieces. Manufacturing method. The method for producing a solid fuel according to any one of claims 1 to 5, further comprising the step of adding a promoter that promotes the penetration of the oil to the solid biomass to the solid biomass. The method further includes the step of adding a resin to the piece of the solid biomass into which the oil has penetrated,
The solid fuel according to any one of claims 1 to 6, wherein the molding step includes the step of producing the solid fuel by compression molding a piece of the solid biomass to which the resin is added. Production method. The spraying step includes a step of controlling the amount of permeation of the oil to the solid biomass so that the combustion temperature of the solid fuel falls within a range of 1000 ° C. to 1200 ° C. by controlling the spraying of the oil. A method of producing a solid fuel according to any one of claims 1 to 7. The method for producing a solid fuel according to any one of claims 1 to 8, wherein the solid biomass is a plant-based biomass containing at least one of woody and non-woody, and the oil is a vegetable oil. 10. The method according to claim 9, wherein the spraying step includes a step of controlling the amount of the vegetable oil permeating the vegetable biomass so that the content of the vegetable oil in the vegetable biomass falls within a range of 5% by weight to 35% by weight. Of solid fuel production. 10. The method for producing a solid fuel according to claim 9, wherein the spraying step includes the step of controlling the amount of the vegetable oil permeating the vegetable biomass so that the weight ratio of the vegetable oil to the vegetable biomass is 30% or less. . The solid according to any one of claims 1 to 11, wherein in the spraying step, the oil is sprayed to the piece of the solid biomass so that the spray amount becomes larger as the water content ratio of the solid biomass becomes smaller. Fuel production method. A spraying device for spraying the heated oil onto the solid biomass pieces to cause the oil to permeate the solid biomass pieces;
A molding apparatus for producing a solid fuel by compression molding the pieces of the solid biomass into which the oil has penetrated;
A solid fuel production system comprising: A solid fuel,
Pieces of solid biomass,
Oil that has permeated the solid biomass fragments;
And the solid fuel is a compression-molded body of pieces of the solid biomass into which the oil penetrates, and the amount of permeation of the oil in the solid biomass is such that the combustion temperature of the solid fuel is 1000 ° C. to 1200 ° C. Solid fuel that is an amount that falls within the range of A solid fuel,
Pieces of plant-based biomass containing at least one of woody and non-woody,
Vegetable oil which has permeated into the pieces of the plant-based biomass,
And the solid fuel is a compact of the plant biomass fragment into which the vegetable oil permeates, and the vegetable oil content of the plant biomass is in the range of 5% by weight to 35% by weight. Solid fuel located in

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