JPWO2018135660A1 - Solid fuel production method, solid fuel production system, and solid fuel - Google Patents

Abstract

  A method for producing a solid fuel according to one aspect of the present disclosure includes a spraying step of spraying heated oil onto a solid biomass fragment, and infiltrating the oil into the solid biomass fragment, and a solid biomass element into which the oil has permeated. Forming a solid fuel by compressing the piece.

Description

Cross-reference of related applications

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

  The present disclosure relates to a method and system for producing a solid fuel, and a solid fuel.

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

JP 50-129601 A

  In the prior art, a wood material is put into a mixed liquid of oil and an adhesive contained in a tank so that the oil penetrates into the wood material. For this reason, in the prior art, it is difficult to adjust the amount of oil penetration 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, the heated oil is sprayed onto the solid biomass pieces to infiltrate the oil into the solid biomass pieces, and the solid biomass pieces into which the oil has penetrated are compression-molded. By this, the manufacturing method of a solid fuel including the shaping | molding process which produces | generates a solid fuel is provided.

  According to the process of infiltrating the solid biomass fragments by spraying the heated oil, the amount of oil penetration into the solid biomass is adjusted more appropriately than the step of impregnating the solid biomass fragments into the oil in the tank. Thus, a solid fuel can be produced. For example, solid fuel can be manufactured by appropriately adjusting the amount of oil penetration by adjusting parameters such as spray amount / spray speed / spray time. Therefore, according to the solid fuel manufacturing method according to one aspect of the present disclosure, an appropriate solid fuel can be manufactured.

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

  According to another aspect of the present disclosure, the spraying step may include a step of moving the solid biomass pieces so that the arrangement of the solid biomass pieces changes. The spraying step may include a step of spraying heated oil onto the moved pieces of solid biomass and allowing the oil to penetrate into the pieces of solid biomass. For example, the spraying step may include a step of infiltrating the oil into the solid biomass unit by spraying the heated oil while stirring the solid biomass unit. According to the spraying of the oil with stirring, the oil can be uniformly permeated into the solid biomass pieces.

  According to another aspect of the present disclosure, the method for producing a solid fuel may include a step of adding an accelerator that promotes oil penetration into the solid biomass to the solid biomass. Examples of accelerators can include surfactants. The accelerator serves to improve oil permeability in the spraying process.

  According to another aspect of the present disclosure, the method for producing a solid fuel may further include a step of adding a resin to a piece of solid biomass into which oil has permeated. The forming step may include a step of generating 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 such that it is solid without being melted during storage and transportation of the solid fuel.
The spraying step may include a step of controlling the amount of oil permeated into the solid biomass by controlling the oil spraying. The forming step may include a step of generating solid fuel by compression-molding solid biomass with controlled oil penetration.

  The spraying step may include a step of controlling the amount of oil permeated 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 a combustion temperature of about 1000 ° C to 1200 ° C. Therefore, according to the method for producing a solid fuel including the spraying step, a solid fuel that can be used in a small-scale biomass boiler can be produced.

  The above-mentioned solid biomass may be plant biomass. Plant biomass includes at least one of woody biomass and non-woody biomass. Examples of woody biomass include forest land remnants and lumber mill ends. Examples of non-woody biomass include rice husk and coconut husk. The oil may be a vegetable oil such as palm oil or coconut oil.

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

According to another aspect of the present disclosure, in the spraying step, oil may be sprayed on the pieces of solid biomass so that the spray amount increases as the water content ratio of the solid biomass decreases.
According to another aspect of the present disclosure, the heated oil is sprayed on the solid biomass pieces to infiltrate the oil into the solid biomass pieces, and the solid biomass pieces into which the oil has penetrated are compression-molded. By this, a solid fuel manufacturing system provided with the shaping | molding apparatus which produces | generates solid fuel may be provided. The solid fuel production system can be configured to produce solid fuel by any of the production methods described above.

  According to another aspect of the present disclosure, a solid fuel including a piece of solid biomass and oil that has penetrated the piece of solid biomass may be provided. The solid fuel may be a compression molded body of solid biomass pieces into which oil has permeated. The amount of oil permeation in the solid biomass may be an amount that allows the combustion temperature of the solid fuel to fall within the range of 1000 ° C to 1200 ° C.

  According to another aspect of the present disclosure, a solid fuel may be provided that includes a plant biomass fragment including at least one of a woody material and a non-woody material, and a vegetable oil that has penetrated the plant biomass fragment. . The solid fuel may be a compression-molded body of plant biomass that has been infiltrated with vegetable oil. The vegetable oil content in the plant biomass may be in the range of 5 wt% to 35 wt%. A solid fuel in which the weight ratio of the vegetable oil to the plant biomass is 30% or less may be provided.

FIG. 1 is a block diagram showing a configuration of a solid fuel production system. FIG. 2 is a flowchart showing a solid fuel production process. FIG. 3 is a diagram illustrating a configuration for spraying oil on solid biomass. FIG. 4 is an explanatory diagram regarding intermittent spraying. 5A and 5B are graphs showing the relationship between the weight ratio and the 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 diagram illustrating a modified example in which oil is sprayed onto the transport belt.

DESCRIPTION OF SYMBOLS 1 ... Solid fuel manufacturing system, 10 ... Dryer, 20 ... Crusher, 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 of the present embodiment includes a dryer 10, a pulverizer 20, a first processing device 30, a second processing device 40, and a pelletizer 50. The 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 that is input as a fuel source. Drying can be performed, for example, using warm air. In the first step (S1) of the production 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%.

  Solid biomass M1 thrown into the dryer 10 is plant biomass containing at least one of woody biomass and non-woody biomass. Examples of woody biomass include forest land remnants and lumber mill ends, and examples of non-woody biomass include coconut husk and rice husk.

  Specifically, the solid biomass M1 may be an aggregate of coarsely pulverized wood, an aggregate of raw, semi-dry, or completely dried vegetables, And an aggregate of grains such as coconut shells.

  The solid biomass M1 dried by the dryer 10 is input to the pulverizer 20. The solid biomass M1 that has already been dried to the target water content before being put into the dryer 10 can be put into the pulverizer 20 without going through the dryer 10.

  The pulverizer 20 is configured to pulverize the input solid biomass M1 to generate a piece of the solid biomass M1. Each piece referred to here may be a part, piece, or grain of solid biomass M1 that has been physically, mechanically, or chemically decomposed. Generating the piece of solid biomass M1 may be generating a 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 a pulverizer 20. In order to uniformly infiltrate the oil M2 into the crushed solid biomass M1 fragments, the solid biomass M1 is crushed, fragmented, or granulated so as to be approximately 5 mm or less. Is preferred. The pieces of solid biomass M1 generated through drying and pulverization are put into the first processing apparatus 30. As another example, the solid biomass M1 may be pulverized in the first step (S1) of the manufacturing process and then dried in the second step (S2).

  The 1st processing apparatus 30 is comprised so that the oil M2 which sprayed the oil M2 heated to the fragment of the input solid biomass M1 may be made to infiltrate the oil M2 to the fragment of the solid biomass M1. In the third step (S3) of the manufacturing process, the first processing device 30 performs a process in which the heated oil M2 is sprayed on the pieces of the solid biomass M1 and the oil M2 is infiltrated into the pieces of the solid biomass M1. . The third step (S3) includes a process of spraying the oil M2 while stirring the pieces of the solid biomass M1, and a process of controlling the permeation amount of the oil M2 in the solid biomass M1. Stirring the pieces of solid biomass M1 corresponds to moving the arrangement of the pieces of solid biomass M1 so as to change, and contributes to the uniform penetration of 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 discharge device 35, and a controller 39.
A piece of solid biomass M <b> 1 put into the first processing device 30 is accommodated in the tank 31. The agitator 32 is configured to agitate the solid biomass M1 pieces accommodated in the tank 31 in the tank 31. At the time of stirring, the mist-like 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 oil. The oil M2 may be a combination of a plurality of types of vegetable oils.

  As shown in FIG. 3, the spraying device 33 is configured to spray the oil M <b> 2 heated by the warming device 34 to the pieces of solid biomass M <b> 1 that are stirred in the tank 31. The heating device 34 is configured to provide the spraying device 33 with the oil M2 heated to the set temperature. The set temperature is not limited, but is, for example, a temperature from 65 ° C. to 200 ° C. The viscosity of the oil M2 is lowered by heating, and the oil M2 is evenly scattered when sprayed. By this spraying and stirring, the oil M2 penetrates evenly into the pieces of the solid biomass M1.

  The amount of oil M2 sprayed can be adjusted according to the amount of solid biomass M1 that receives oil M2. The spray amount may be further adjusted according to the water content ratio of the solid biomass M1. The oil M2 may be sprayed continuously on the solid biomass M1 to be stirred, or may be sprayed intermittently. The oil M2 may be sprayed periodically at intervals of 3 to 5 seconds, for example. In 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 performed alternately.

The pieces of solid biomass M1 into which the oil M2 has permeated in the tank 31 by spraying are discharged from the tank 31 by the discharge device 35 and input to the second processing device 40.
The controller 39 of the first processing device 30 is configured to control the stirrer 32, the spraying device 33, the heating device 34, and the discharge device 35. Specifically, the controller 39 stirs the stirrer 32, the spraying device 33, the heating device 34, and the discharge device 35 so that the combustion temperature of the produced solid fuel M3 (pellet) during power generation falls within the target temperature range. To control. This control includes control of the spraying time of the oil M2, the spraying amount per unit time, and the stirring time and speed.

  In order to produce the solid fuel M3 so that the combustion temperature falls within the target temperature range, it is only necessary to control the permeation amount of the oil M2 in the solid biomass M1. The controller 39 controls the spraying time of the oil M2 and the spraying amount per unit time, and the stirring time and speed so that the amount of permeation of the oil M2 in the solid biomass M1 corresponds to the target temperature range. Can do.

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

  When the amount of oil M2 corresponding to the target temperature range permeates into the fragment of the solid biomass M1 by the control related to the spraying of the oil M2, the first processing device 30 has the solid biomass M1 into which the oil M2 has permeated. The pieces of solid biomass M1 after discharging the pieces and infiltrating the oil are put into the second processing apparatus 40.

  The 2nd processing apparatus 40 is comprised so that resin may be added and discharged | emitted to the piece of solid biomass M1 thrown in from the 1st processing apparatus 30. FIG. In the fourth step (S4) of the manufacturing process, the second processing device 40 performs a process of adding the resin to the solid biomass M1 pieces into which the oil M2 has permeated.

  The resin added to the piece of solid biomass M1 functions as a shape-retaining agent and an adhesive when pelletizing the piece of solid biomass M1. Specifically, as 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, a vegetable resin, particularly a vegetable resin containing cellulose, can be used as a resin to be added to the solid biomass M1 pieces.

  The 2nd processing apparatus 40 can add resin so that the surface of the piece of solid biomass M1 which oil M2 osmose | permeated may be covered by stirring with molten resin and the piece of solid biomass M1. The 2nd processing apparatus 40 is comprised so that the fragment of the solid biomass M1 to which the said resin was added may be supplied to the pelletizer 50. FIG.

  The pelletizer 50 is configured to pelletize the solid biomass M1 supplied with the resin supplied from the second processing device 40 by compression molding, specifically, extrusion molding. In the fifth step (S5) of the manufacturing process, the pieces of the solid biomass M1 into which the oil M2 has permeated and the resin has been applied are pelletized by compression molding to produce a solid fuel M3. Pellets, which are compression-molded bodies of solid biomass M1 produced by the pelletizer 50, are discharged as solid fuel M3 and stored in storage bags or boxes.

  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 piece of solid biomass M1 into which oil M2 has permeated and resin is applied. In particular, the solid fuel M3 is configured as a compression-molded body of plant-based biomass into which vegetable oil has penetrated.

  Since the solid fuel M3 which uses vegetable biomass and vegetable oil as a component is biomass as a whole, it is effective as a renewable energy source. The energy generated by the fuel of the solid fuel M3 is used for power generation, for example.

  As described above, according to the present embodiment, the solid fuel M3 that can be combusted within a temperature range in which an existing small-scale biomass boiler has resistance by controlling the amount of infiltration of the oil M2, the calorific value per weight is high. The solid fuel M3 capable of realizing efficient power generation can be manufactured.

  Moreover, electric energy generated by power generation can be sold in Japan using a renewable energy feed-in tariff system. Therefore, according to this embodiment, it is possible to provide the solid fuel production system 1 and the solid fuel M3 that are useful for the spread of renewable energy.

  In addition, the solid fuel M3 is preferably manufactured so that the content of the vegetable oil as the oil M2 is in the range of 5 wt% to 35 wt%. Such a solid fuel M3 can be used for a small-scale biomass boiler because the combustion temperature falls within the range of 1000 ° C to 1200 ° C. Furthermore, in order to effectively use the heat generated by the solid biomass M1, the solid fuel M3 has a weight ratio of the oil M2 to the solid biomass M1 within 30% or less as long as the required calorific value is satisfied. It is preferable to be manufactured.

  5A and 5B are graphs showing 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 the solid biomass M1 contained in the solid fuel M3, and W2 is the weight of the oil M2 contained in the solid fuel M3. The weight ratio k is k = W2 / W1.

  The square points shown in FIGS. 5A and 5B are the weight ratio k shown on the horizontal axis, 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. = Represents the calorific value Y measured when the first sample containing 8630 cal / g coconut oil is fueled.

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

  The circular dots shown in FIG. 5B are vegetable oils having a calorific value Q1 = 4330 cal / g as solid biomass M1 and a calorific value Q2 = 3700 cal / g as oil M2 at a weight ratio k indicated on the horizontal axis. Represents the calorific value Y measured when the third sample containing For calorific value measurement, a digital calorimeter, specifically Ogawa Sampling Co., Ltd. S. K 200 was used.

6A and 6B show the calorific value Z on the graph having the horizontal axis of the weight ratio k when it is assumed that the sample is composed only of the oil M2. 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 are obtained by converting the calorific value Y corresponding to the square points shown in FIG. 5A and FIG. The calorific value Z is shown. Similarly, a circular point shown in FIG. 6A indicates a 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 point shown in FIG. 6B indicates the heat generation amount Z when the heat generation amount Y corresponding to the circular point shown in FIG. 5B is converted according to the above conversion formula.

  6A and 6B, regarding the heat generation of the solid fuel M3, it can be understood that when the weight ratio of the oil M2 to the solid biomass M1 is 30% or less, the contribution of the solid biomass M1 to the heat generation increases sharply. 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 a solid fuel M3 that can make significant use of the solid biomass M1, for example, transportation efficiency, production efficiency, and heat generation efficiency. Can be produced.

  The graph shows an example in which the oil M2 is coconut oil and vegetable oil. However, palm oil and other vegetable oils may be used as the oil M2, and in that case as well, 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.

  As mentioned above, although the solid fuel manufacturing system 1 and manufacturing method of this embodiment, and the solid fuel M3 of biomass utilization were demonstrated, this indication is not limited to the said embodiment, Various aspects can 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 corresponding to the target permeation amount of the oil M2 with respect to the solid biomass M1. That is, in the first step (S1), the higher the target permeation amount of the oil M2, the lower the target water content ratio, and the solid biomass M1 can be dried until the target water content ratio is reached. According to such a drying step (S1), the higher the target permeation amount, the better the solid biomass M1 is dried, and the oil permeability in the solid biomass M1 increases. Accordingly, the processing efficiency in the first processing apparatus 30 is increased.

  The amount of oil M2 sprayed in the spraying step (S3) may be adjusted according to the amount of solid biomass M1 to be sprayed and the water content ratio of the solid biomass M1. The spray amount can be adjusted to a larger amount as the water content ratio is smaller (as the solid biomass M1 is dried). In other words, the spray amount can be adjusted to a smaller amount as the water content ratio increases. The water content information may be input to the controller 39 of the first processing apparatus 30 by an operator's operation, or may be input to the controller 39 from a sensor that can detect the water content of the solid biomass M1. The sensor may be provided in the dryer 10 and / or the first processing device 30, for example. The water content ratio may be estimated from the weight per volume of the solid biomass M1.

  The 1st processing apparatus 30 may be comprised so that the promoter which accelerates | stimulates permeation of oil M2 may be added to solid biomass M1 simultaneously with spraying of oil M2 and / or before and after spraying of oil M2. For example, the spraying device 33 may include a spray mechanism 33A for the oil M2 and a spray mechanism 33B for the accelerator. Examples of accelerators include surfactants. By adding the accelerator, the oil permeability (penetration rate) is increased, and the oil M2 can be efficiently infiltrated into the solid biomass M1 up to the target infiltration amount.

  The oil M2 that permeates the solid biomass M1 may be a non-vegetable oil. The solid biomass M1 may be at least partially infiltrated with oil that does not correspond to a renewable energy source. The control of the penetration amount of the oil M2 is not limited to the control for realizing the fuel temperature or the content of the oil M2.

  The pieces of solid biomass M1 generated by pulverization may be arranged on the conveyance belt 61 shown in FIG. 7, and the solid biomass M1 elements on the conveyance belt 61 are between the start point and the end point of the conveyance belt 61. A plurality of spraying devices 63 that inject oil M <b> 2 from above on the strip may be provided along the transport belt 61. The spraying device 63 can receive supply of the heated oil M2 from the heating device 34.

  Along the conveying belt 61, a plurality of mechanical devices 65 arranged alternately with the spraying device 63 change the arrangement of the pieces of the solid biomass M1, and spray the oil M2 uniformly on the pieces of the solid biomass M1. May be provided for this purpose.

  Similarly to the stirrer 32, the mechanical device 65 may apply a mechanical action to the pieces of the solid biomass M1 so that the front and back directions and positions of the pieces on the transport belt 61 change randomly. it can. For example, the mechanical device 65 may be a device that applies vibration to the conveyor belt 61 so that the pieces on the conveyor belt 61 are turned over, or may be configured to incline the conveyor belt 61. The conveyor belt 61 may be configured to have a height difference. In this case, the position of the fragment of the solid biomass M1 conveyed by the conveyance belt 61 can change due to the height difference.

  The transport belt 61, the spraying device 63, and the mechanical device 65 can be provided in the first processing device 30 instead of the tank 31, the spraying device 33, and the stirrer 32. The conveyor belt 61, the spraying device 63, and the mechanical device 65 may be provided in place 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 apparatus 40.

  In addition, in order to promote the penetration of the oil M2 into the solid biomass M1, the spraying of the solid biomass M1 onto the oil M2 may be performed in a low pressure environment. By eliminating the low-pressure environment after spraying, the pressure acting on the solid biomass M1 infiltrated with the oil M2 increases, and it is considered 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 constituent element in the above embodiment may be distributed among a plurality of constituent elements. Functions of a plurality of 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 embodiment may be added to or replaced with the configuration of the other embodiment. Any aspect included in the technical idea specified from the wording of the claims is an embodiment of the present disclosure.

Claims (15)

A spraying step of spraying heated oil on the solid biomass pieces and allowing the oil to penetrate into the solid biomass pieces;
A molding step for producing solid fuel by compression molding the pieces of solid biomass into which the oil has permeated;
The manufacturing method of the solid fuel containing this. The method for producing a solid fuel according to claim 1, further comprising a step of generating the solid biomass fragments by pulverizing the solid biomass before the spraying step. Further comprising the step of drying the solid biomass before the spraying step,
3. The method for producing a solid fuel according to claim 1, wherein the oil is sprayed onto the dried pieces of solid biomass.   In the spraying step, the solid biomass pieces are moved so that the arrangement thereof is changed, the heated oil is sprayed on the moved solid biomass pieces, and the oil is applied to the solid biomass pieces. The method for producing a solid fuel according to any one of claims 1 to 3, further comprising a step of permeating the fuel.   5. The solid fuel according to claim 1, wherein the spraying step includes a step of spraying the heated oil while stirring the solid biomass pieces and causing the oil to penetrate into the solid biomass pieces. Manufacturing method. The manufacturing method of the solid fuel as described in any one of Claims 1-5 which further includes the process of adding the promoter which accelerates | stimulates the penetration | permeation of the said oil with respect to the said solid biomass to the said solid biomass. Further comprising the step of adding a resin to the piece of solid biomass into which the oil has penetrated,
The solid fuel according to any one of claims 1 to 6, wherein the forming step includes a step of generating the solid fuel by compression-molding the piece of the solid biomass to which the resin is added. Production method.   The spraying step includes a step of controlling an amount of the oil permeated into the solid biomass so that a combustion temperature of the solid fuel is within a range of 1000 ° C to 1200 ° C by controlling the spraying of the oil. The manufacturing method of the solid fuel as described in any one of Claims 1-7.   The method for producing a solid fuel according to any one of claims 1 to 8, wherein the solid biomass is plant biomass including at least one of a woody system and a non-woody system, and the oil is a vegetable oil.   The spraying step includes a step of controlling an amount of penetration of the vegetable oil into the plant biomass so that a content of the vegetable oil in the plant biomass is within a range of 5 wt% to 35 wt%. Solid fuel production method.   The method for producing a solid fuel according to claim 9, wherein the spraying step includes a step of controlling an amount of penetration of the vegetable oil into the plant biomass so that a weight ratio of the vegetable oil to the plant 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 on the solid biomass pieces so that the spray amount increases as the water content ratio of the solid biomass decreases. Fuel manufacturing method. A spraying device that sprays heated oil onto the solid biomass pieces, and infiltrates the oil into the solid biomass pieces;
A molding device that produces solid fuel by compression molding the pieces of solid biomass into which the oil has penetrated,
A solid fuel production system comprising: Solid fuel,
Solid biomass fragments,
Oil that has penetrated into the solid biomass fragments;
The solid fuel is a compression-molded body of the solid biomass pieces into which the oil has permeated, and the amount of oil infiltrated in the solid biomass has a combustion temperature of the solid fuel of 1000 ° C. to 1200 ° C. Solid fuel that is within the range of Solid fuel,
A plant biomass fragment containing at least one of a woody system and a non-woody system;
Vegetable oil that has penetrated into the plant biomass fragments;
The solid fuel is a compression-molded body of the plant-based biomass infiltrated with the vegetable oil, and the content of the plant oil in the plant-based biomass is in the range of 5 wt% to 35 wt%. Solid fuel in

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