JP6661141B1 - Biomass raw material storage method and biomass raw material storage system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method capable of appropriately sorting a biomass raw material when storing a predetermined amount of the biomass raw material, controlling fermentation of the sorted biomass raw material, and storing the biomass raw material safely for a predetermined time. SOLUTION: The biomass raw material storage method of the present invention includes a step of detecting an empty space of a mixing type tank for receiving an organic energy resource, and a step of detecting the empty space in the mixing type tank when the mixing type tank is empty. When there is no space in the mixed type tank in the process of putting organic energy resources into the type tank as the biomass raw material with the highest priority, and when there is no space in the mixed type tank, the raw material storage tank divided by the main nutrients is used as the storage destination. It has a process of inputting energy resources as a biomass raw material and a process of controlling fermentation of the biomass raw material in a tank in which the biomass raw material is stored. [Selection] Fig. 3

Description

  The present invention relates to a biomass material storage method and a storage system for safely storing a biomass material supplied to a biogas generator or the like.

  BACKGROUND ART Conventionally, a biogas generator that generates biogas from anaerobic fermentation from a biomass raw material has been known. As a biomass raw material supplied to a biogas generator, for example, organic waste such as food waste and garbage is generally used. In a treatment system in which methane fermentation is performed under anaerobic conditions from these organic wastes to recover methane gas, the organic wastes are appropriately pulverized into slurry biomass raw materials, and stored in a raw material tank.

  For example, in the biomass gasification system disclosed in Patent Literature 1, it is disclosed that a crushed and slurried mixture or biomass is supplied to a raw material tank and then supplied to a fermentation tank.

  Further, Patent Documents 2 and 3 disclose a methane fermentation treatment system for a food waste methane fermentation treatment system in which crushed and slurried food waste or liquid waste-based food waste is used as a raw material. Discloses a method for generating and recovering biogas.

International publication pamphlet of WO2016 / 038724 JP-A-11-300323 JP 2008-284499 A

  However, current technologies, not limited to the above-described patent documents, cannot adequately satisfy the needs of the market, and have the following problems.

  That is, in the biogas generation system described above, food waste crushed into a slurry and food waste mainly composed of liquid waste are used as biomass raw materials. These biomass raw materials are continuously supplied to the methane fermentation process, and are generally traded in the form of biomass raw materials. And, when these biomass raw materials are stored in the storage tank for a predetermined time, it is impossible to control unintended fermentation, and the biomass raw materials overflow from the piping of the device to contaminate the surroundings, An accident that emits a strong odor has occurred.

  Therefore, in order to prevent such an accident, it has been required to find a method of controlling the fermentation of the biomass raw material and a method of storing the biomass raw material safely for a predetermined time.

  In view of the above-mentioned problems, the present invention, when storing a predetermined amount of biomass raw material, appropriately sorts the biomass raw material, controls the fermentation of the sorted biomass raw material, and can further safely store the biomass raw material for a predetermined time. The aim is to provide a method.

(1) The biomass raw material storage method of the present invention comprises:
Detecting a vacancy in the mixing tank to receive organic energy resources;
In the case where there is an empty space in the mixed type tank in the step of detecting the empty space, a step of putting the organic energy resources into the mixed type tank as a biomass raw material with the highest priority,
In the case where there is no room in the mixed type tank in the step of detecting the space, a step of charging the organic energy resources as a biomass raw material as a storage destination in a raw material storage tank separated by a main nutrient,
Controlling the fermentation of the biomass raw material in the mixed type tank and the raw material storage tank in which the biomass raw material is stored .
(2) The method for storing a biomass raw material according to the present invention includes:
The raw material storage tank divided by the main nutrients, at least, a carbohydrate-rich tank, a lipid-rich tank, a protein-rich tank, and any of the fiber-rich tank, the raw material storage tank partitioned by the main nutrients, It is preferable that maintenance is performed under conditions different from those of the mixing type tank.
(3) The method for storing a biomass raw material according to the present invention comprises the steps (1) and (2),
A raw material analysis step of analyzing the amount of nutrients contained in the organic energy resources, and a raw material storage tank in which the analyzed organic energy resources are classified by the main nutrients based on the result of the analysis. It is preferable to store it in
(4) The method for storing a biomass raw material according to any one of (1) to (3),
It is preferable that the parameters for maintaining the raw material storage tank in the step of suppressing the fermentation of the biomass raw material include at least one of the temperature, pH, and liquid viscosity in the raw material storage tank.
(5) The biomass raw material storage system of the present invention comprises:
Resource receiving means for receiving organic energy resources;
Vacancy detection means for detecting the vacancy of the mixed type tank for receiving the organic energy resources,
When the mixed-type tank has an empty space, the organic energy resources are put into the mixed-type tank as a biomass raw material with the highest priority. A raw material storage tank selecting means for inputting the organic energy resources as a biomass raw material as a storage destination,
In the mixed type tank and the raw material storage tank where the biomass raw material is stored, a raw material fermentation control unit that controls fermentation of the biomass raw material,
It is characterized by having.
(6) The biomass raw material storage system according to the above (5),
The raw material storage tank divided by the main nutrients, at least, a carbohydrate-rich tank, a lipid-rich tank, a protein-rich tank, and any of the fiber-rich tank, the raw material storage tank partitioned by the main nutrients, It is preferable that maintenance is performed under conditions different from those of the mixing type tank.
(7) The biomass raw material storage system according to the above (5) or (6),
The plurality of raw material storage tanks include at least a sugar-rich tank, a lipid-rich tank, a protein-rich tank, a fiber-rich tank, and a mixed-type tank.
(8) The biomass raw material storage system according to any one of (5) to (7),
It is preferable that the raw material fermentation control means suppresses the fermentation of the biomass raw material using at least one of temperature, pH and liquid viscosity in the raw material storage tank.

According to the biomass raw material storage method and storage system of the present invention, when storing a predetermined amount of biomass raw material, the fermentation of this biomass raw material is controlled while appropriately sorting the biomass raw material, and furthermore, it can be safely stored for a predetermined time. .
Furthermore, according to the biomass raw material storage method and storage system of the present invention, unintended fermentation can be controlled even when trading biomass raw materials, and safe transportation can be performed.

It is a flowchart which shows the biomass raw material storage method in 1st Embodiment. It is a mimetic diagram of a biomass material storage system in a 1st embodiment. It is a flowchart which shows the biomass raw material storage method in 2nd Embodiment. It is a schematic diagram of a biomass raw material storage system in a second embodiment.

  Next, an embodiment for carrying out the present invention will be described.

<< 1st Embodiment >>
[Biomass raw material storage method]
First, a biomass raw material storage method according to the first embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 1, the biomass raw material storage method of the present embodiment is a method that can be effectively used in a biogas generation system that generates biogas from anaerobic fermentation from a biomass raw material, for example.

More specifically, the biomass raw material storage method of the present embodiment includes a receiving step (step 1) for receiving an organic energy resource and a raw material analyzing step (step 2) for analyzing the amount of nutrients contained in the received organic energy resource. ), A main nutrient specifying step of specifying the main nutrient of the organic energy resource based on the result of the analysis (Step 3), and based on the result of the analysis, according to the amount of the nutrient contained in the organic energy resource, A raw material storage tank selection step (step 4) of selecting a raw material storage tank for storing the analyzed organic energy resources as a biomass raw material from a plurality of raw material storage tanks, and using the organic energy resources as a biomass raw material Charging step (step 5) for charging the selected raw material storage tank, and a raw material storage tank in which the biomass raw material is stored In, having, as a raw material fermentation control process (Step 6) for controlling the fermentation of the biomass material.
The present embodiment only needs to include at least steps 2, 4 and 6 described above. In the following, particularly, the raw material analysis step, the raw material storage tank selection step, and the raw material fermentation control step will be described in detail.

<Raw material analysis process>
The raw material analysis step shown in step 2 of FIG. 1 is a step of analyzing the amount of nutrient contained in the organic energy resources received in step 1.
The organic energy resources received in the receiving step are provided to the raw material analyzing step through a pulverizing step as necessary.
In the biomass raw material storage method of the present embodiment, the organic energy resources are so-called biomass raw material resources, and include food waste or organic waste other than food. Food waste includes, for example, processed foods, seasonings, and the like, in addition to vegetables, fruits, fish, meat, and the like. On the other hand, the organic waste includes wood, fallen leaves, flowers, and the like.

The nutrients contained in these organic energy resources include carbohydrates, lipids, proteins, fibers and the like.
In the past, it has been pointed out that in a biogas generation system, the generation efficiency of methane gas varies depending on the nutrients of the organic waste to be input. The reason for this is, for example, that the decomposition of proteins in food waste generates ammonia nitrogen, thereby inhibiting methane fermentation.

At present, the metabolic system of anaerobic fermentation has not been completely elucidated. Theoretically, the theoretical values of the amount of methane gas generated from carbohydrates, lipids, and proteins are pointed out as 50%, 68%, and 71%, respectively (H. Schulz and B. Eder: Practical Biogas Technology, Ohmsha) Publishing Bureau, pp. 24-30 (2002)).
On the other hand, in actual methane fermentation, the fermentation performance is influenced by the fermentation environment such as the fermentation temperature, the concentration of ammonia nitrogen, the pH, and the VFA concentration.

  In the present invention, as a result of intensive studies by the present inventors, nutrients of organic energy resources are analyzed, and an appropriate storage tank is selected from a plurality of storage tanks according to the amount of nutrients contained in the organic energy resources. By selecting and maintaining these multiple storage tanks under different conditions, it has been found that the fermentation of the biomass raw material stored in the storage tank can be controlled and stored safely for a long period of time. is there.

As an analysis method used as the raw material analysis step in the present embodiment, specifically, infrared spectroscopy such as near infrared is preferably applied, but is not limited thereto.
For example, in addition to infrared spectroscopy, known analysis methods capable of qualitatively and quantitatively determining nutrients in raw materials can be used. Good.

According to the raw material analysis step of the present embodiment, the type of nutrient and the content of each nutrient in the analyzed organic energy resources are clarified.
In the present embodiment, five types of nutrients to be analyzed in the raw material analysis step are “saccharide, lipid, protein, fiber, and mixed type” as described later. However, as long as the “mixed type” is indispensable, the classification is not limited to these classifications, and anything other than the “mixed type” can be set as appropriate.

The unit of the nutrient content is preferably weight%, but is not limited thereto.
Then, in accordance with the analysis result, in a storage tank selection step 20 later, an appropriate storage tank for storing the organic energy resources as a biomass raw material is selected.

<Raw material storage tank selection process>
Next, the raw material storage tank selection step in the present embodiment will be described.
The storage tank selection step shown in step 4 of FIG. 1 stores the organic energy resource as a biomass raw material in accordance with the amount of nutrient contained in the organic energy resource based on the analysis result in the raw material analysis step described above. This is a process for selecting a raw material storage tank. That is, in the present embodiment, a plurality of raw material storage tanks T for storing biomass raw materials are provided as described later.

  In the present embodiment, the plurality of raw material storage tanks T preferably include a sugar-rich tank T1, a lipid-rich tank T2, a protein-rich tank T3, a fiber-rich tank T4, and a mixed-type tank T5. Here, the carbohydrate-rich tank T1 is a tank for storing a biomass raw material containing a larger amount of carbohydrate as a main nutrient than other nutrients as a nutrient in a certain organic energy resource. Similarly, the lipid-rich tank T2 is a tank for storing a biomass raw material containing more lipid as a main nutrient as a nutrient in a certain organic energy resource than other nutrients. Further, the protein-rich tank T3 is a tank for storing a biomass raw material containing more protein as a main nutrient than other nutrients as a nutrient in a certain organic energy resource. Further, the fiber rich tank T4 is a tank for storing a biomass raw material that contains more fiber as a main nutrient as a nutrient in a certain organic energy resource than other nutrients. Further, the mixed type tank T5 is a tank for storing a biomass raw material having no nutrient as a main nutrient as compared with other nutrients as a nutrient in a certain organic energy resource.

  In the present embodiment, the saccharide-rich tank T1 is set as a raw material storage tank for storing a biomass raw material containing 50% or more saccharide. Similarly, the lipid-rich tank T2 is a raw material storage tank for storing a biomass raw material containing 50% or more of lipid, the protein-rich tank T3 is a raw material storage tank for storing a biomass raw material containing 50% or more of the protein, and a fiber. The quality rich tank T4 is a raw material storage tank for storing a biomass raw material containing 50% or more of fiber, and the mixed type tank T5 is a raw material storage tank for storing a raw material containing no more than 50% of nutrients as a main nutrient. Each was set.

That is, in the present embodiment, the above-mentioned mixed type tank is used as a storage tank for storing a raw material that is not stored in any of the carbohydrate-rich tank T1, the lipid-rich tank T2, the protein-rich tank T3, and the fiber-rich tank T4. The tank T5 was installed.
As will be described later in the second embodiment, since the mixed-type tank T5 is a tank in which various nutrients are mixed, the mixed-type tank T5 may be set as a storage tank for preferentially storing raw materials without performing nutrient analysis. Good.
Conversely, in the storage tank selection step of the present embodiment, a certain organic energy resource that has passed through the raw material analysis step is any one of the sugar-rich tank T1, the lipid-rich tank T2, the protein-rich tank T3, and the fiber-rich tank T4. Is stored in the mixing type tank T5 if not stored in any of the four tanks.
In addition, in many cases, the raw material that has undergone the accepted raw material analysis step will be stored in the mixing type tank T5.

In the present embodiment, the selection criterion in the storage tank selecting step is set as described above, but the present invention is not limited to the above setting. For example, the setting of the carbohydrate-rich tank T1 as the “raw material containing a large amount of carbohydrate as a main nutrient” is set in a storage tank for storing the raw material “40% or more of the carbohydrate and most contained in the nutrient”. , Etc. (it goes without saying that the same applies to the second embodiment).
In any case, in the storage tank selection step of the present embodiment, when it is analyzed that there is no nutrient serving as the main nutrient, the mixed type tank is selected, and the organic energy resources including the nutrient serving as the main nutrient are selected. In addition, raw material storage tanks classified by main nutrients are selected.

  Further, in the present embodiment, the types of nutrients analyzed in the raw material analysis step are four types of “sugars, lipids, proteins, and fibers”. However, the types of nutrients are not limited to these, and other nutrients may be newly added. It can be set as appropriate, such as defining it as a type (it goes without saying that the same applies to the second embodiment). For example, three types of “carbohydrate, lipid, and protein” may be set. In this case, the plurality of raw material storage tanks T preferably include at least three of a “carbohydrate-rich tank, a lipid-rich tank, and a protein-rich tank”.

<Raw material fermentation control process>
Next, the raw material fermentation control step 30 in the present embodiment will be described.
The raw material fermentation control step 30 shown in step 6 of FIG. 1 is a step performed to control the methane fermentation of the raw material in the raw material storage tank T selected in the storage tank selection step.

  That is, in a biogas generation system that generates biogas, a situation in which the biomass raw material is stored or transported for a long time before being supplied to the methane fermentation step is assumed. In this case, it is necessary to appropriately maintain and manage the raw material in the raw material storage tank T so that the fermentation of the biomass raw material and the generation of gas can be controlled and stored safely.

Specifically, the biomass raw material in the raw material storage tank T is maintained and controlled by parameters such as temperature, pH, liquid viscosity, alkalinity, VFA (volatile fatty acids and lower fatty acids), and TS (solid matter concentration).
And in this embodiment, it is preferable that the sugar-rich tank T1, the lipid-rich tank T2, the protein-rich tank T3, the fiber-rich tank T4, and the mixed-type tank T5 are maintained and managed under different conditions. Note that the management conditions in each raw material storage tank may be maintained and managed under different conditions as described above, or may be maintained and managed under substantially the same conditions, as long as the fermentation is under controlled control.

Hereinafter, an example of specific conditions when the above-mentioned maintenance conditions are different will be described.
In the present embodiment, a raw material containing 50% or more of a saccharide is stored in the saccharide-rich tank T1. When the maintenance and management parameters of the carbohydrate-rich tank T1 are three of “temperature, pH and liquid viscosity”, it is preferable that each of them is maintained within the following ranges.
That is, in the sugar rich tank T1, it is preferable that the temperature is 30 ± 5 ° C., the pH is 3 to 6, and the liquid viscosity is 0.5 to 20 mPa · s in order to control methane fermentation.
Thus, in the present embodiment, the parameters of the maintenance of the raw material storage tank in the raw material fermentation control step include at least one of the temperature in the raw material storage tank, the pH, and the liquid viscosity, and the temperature, the pH, Preferably, at least one of the liquid viscosities is managed so as to be different for each raw material storage tank.

In order to keep the above-mentioned parameters for maintenance within a predetermined range, the inside of the raw material storage tank T may be heated or a known substance may be added.
For example, in order to maintain the temperature in the carbohydrate-rich tank T1 within the above range, a thermometer is installed in the raw material storage tank, the temperature is measured at predetermined time intervals, and heating and cooling are appropriately performed by a known heating and cooling device. May be performed.
Further, in order to maintain the pH in the carbohydrate-rich tank T1 within the above range, the pH in the raw material storage tank is measured at predetermined time intervals, and a known acidic liquid (for example, an organic acid such as formic acid or acetic acid) is used. Alternatively, an alkaline liquid (eg, an aqueous sodium hydroxide solution) may be added.

  In the present embodiment, the three parameters for maintenance in the carbohydrate-rich tank T1 are "temperature, pH, and liquid viscosity". However, the present invention is not limited to this. "pH".

The maintenance conditions of each of the lipid-rich tank T2, the protein-rich tank T3, and the fiber-rich tank T4 can be set as follows, for example.
(1) Lipid rich tank T2
Temperature: 40 ± 5 ° C
pH: 3-6
Liquid viscosity: 0.5 to 20 mPa · s
(2) Protein rich tank T3
Temperature: 30-70 ° C
pH: 3-6
Liquid viscosity: 1 to 15 mPa · s
(3) Fiber rich tank T4
Temperature: 20-50 ° C
pH: 3-6
Liquid viscosity: 5 to 20 mPa · s

Next, in this embodiment, conditions for maintaining the mixing type tank T5 will be described.
In the present embodiment, as described above, in the analyzed organic energy resources, any of the storage conditions of the carbohydrate-rich tank T1, the lipid-rich tank T2, the protein-rich tank T3, and the fiber-rich tank T4 can be used. If they do not match, they are stored in the mixing type tank T5.

That is, in the biomass raw material stored in the mixing type tank T5, it can be predicted that the nutrient content is changed each time a new raw material is charged.
Therefore, in the present embodiment, it is possible to change the setting range in the parameters of the maintenance of the mixed type tank T5 every time the organic energy resource as a new biomass raw material is input (the second embodiment). But it goes without saying.)

For example, first, it is assumed that 100 kg of the biomass raw material N1 is stored in the mixing type tank T5. The nutrient content of the biomass raw material N1 is 40% by weight of saccharide, 30% by weight of lipid, 15% by weight of protein, and 15% by weight of fiber.
At this point, the range of each parameter of the mixing type tank T5 is set as follows.
Temperature: 20-35 ° C
pH: 3-6
Liquid viscosity: 10 to 20 mPa · s

Next, it is assumed that 100 kg of the biomass raw material N2 is newly added in the mixing type tank T5. The nutrient content of the biomass raw material N2 is 40% by weight of saccharide, 40% by weight of lipid, 20% by weight of protein, and 0% by weight of fiber.
Then, when the biomass raw material N2 is newly added to the mixed type tank T5, the nutrient content in the mixed type tank T5 is 40% by weight of saccharide, 35% by weight of lipid, 17.5% by weight of protein, The fiber content is 7.5% by weight.

When the biomass raw material N2 is newly added to the mixing type tank T5, the range of each parameter of the maintenance can be changed as follows.
Temperature: 20-40 ° C
pH: 3-6
Liquid viscosity: 10 to 20 mPa · s
In the above example, only the temperature is changed, but at least one of the temperature, the pH, and the liquid viscosity may be changed. (It goes without saying that the same applies to the second embodiment.) .

As described above, by changing the setting range in the parameters of the maintenance of the mixed-type tank T5, it becomes possible to appropriately control the fermentation of the biomass raw material stored in the mixed-type tank T5.
The timing of changing the set range may be a point in time when a new raw material is charged, or a nutrient in the tank may be periodically detected, and the range may be changed to an optimum range at that point.
The upper and lower limits of the setting range can be appropriately set in view of the type of nutrient in the raw material, the ambient temperature, and the like.

  In addition, in order to keep the parameters of the maintenance and management of each of the lipid-rich tank T2, the protein-rich tank T3, the fiber-rich tank T4, and the mixed-type tank T5 within a predetermined range, the inside of each tank is heated or a known method is used. The fact that a substance or the like may be added is the same as described for the carbohydrate-rich tank T1.

[Biomass raw material storage system]
Next, the biomass raw material storage system 200 according to the present embodiment will be described with reference to FIG.
As shown in the figure, the biomass raw material storage system 200 can communicate with biomass power generation companies CM1 and CM2 having a biomass power generation facility BPG via a known network N such as the Internet. Note that, in the drawing, a total of two businesses are illustrated with information terminals IT such as PCs and smart phones, respectively, but the businesses connected via the network N and their locations are not particularly limited, and There can be countless places and regions throughout the country.

  More specifically, the biomass raw material storage system 200 according to the present embodiment includes a resource receiving unit 210 that receives an organic energy resource, and a nutrient analyzing unit 220 that analyzes the nutrient of the organic energy resource received by the resource receiving unit 210. A main nutrient specifying means 230 for specifying a main nutrient to be a main nutrient among the analyzed nutrients; a plurality of raw material storage tanks T for storing the organic energy resources as biomass raw materials; Raw material storage tank selecting means 240 for selecting a storage destination from among the plurality of different raw material storage tanks T classified for each main nutrient, and fermentation of the biomass raw material in the storage tank in which the biomass raw material is stored. And a raw material fermentation control means 250 to be controlled.

In this embodiment, the receiving means 260 for receiving information on biomass raw materials used by the business partners (biomass power generation companies CM1 and CM2), and supply to the business partners based on the components of the biomass raw materials of the business partners. Preferably, a supply biomass material determining means 270 for determining a storage tank of the biomass material is further included. As a specific example of the receiving unit 260 and the supplied biomass raw material determining unit 270, a known computer that also functions as a main nutrient specifying unit 230 and a raw material storage tank selecting unit 240 described later can be exemplified.
Thus, for example, when a biomass raw material with a high saccharide content is required in the biomass power generation facility BPG of the biomass power generation company CM1, a biomass raw material with a high saccharide content is supplied from the saccharide rich tank T1 in response to this need. It becomes possible to supply the biomass power generation company CM1 via the vehicle Cb.

  Here, as shown in FIG. 2, the resource receiving means 210 includes a neutralization-mixing fluidizing means 210a for fluidizing the organic energy resources including a liquid material or sludge, and the organic energy other than the liquid material or the sludge. And crushing means 210b having a crusher for crushing resources.

The neutralization / mixing / fluidizing means 210a stores and neutralizes, for example, a liquid material (water, sugar, lipid, protein, fiber mixture) or sludge among the received organic energy resources while neutralizing it. Can be exemplified.
The crushing means 210b is a container equipped with a known roller mill or jet mill, and stores organic energy resources having a higher particle size than the above-mentioned liquid material or sludge.

  As described above, in the biomass raw material storage system 200 of the present embodiment, the receiving tank is changed according to the state of the organic energy resources (particle size and density, etc.) at the time of receiving. Further, as shown in FIG. 2, the transport vehicle Ca loaded with various organic energy resources can carry the organic energy resources into the resource receiving means 210.

In the present embodiment, the plurality of raw material storage tanks T are configured to include a sugar-rich tank T1, a lipid-rich tank T2, a protein-rich tank T3, a fiber-rich tank T4, and a mixed-type tank T5. As described above, these types are only examples, and for example, any other than the mixing type tank T5 may be omitted.
As is clear from the drawing, the mixing type tank T5 has a larger capacity than other raw material storage tanks. Further, a sensor (not shown) is arranged in each raw material storage tank T, and it is possible to detect how much biomass raw material is stored in each storage tank.

As described above, the nutrient analysis means 220 is preferably applied with a known infrared spectroscopy such as near infrared rays. In addition to the infrared spectroscopy, known analysis methods capable of qualitatively and quantitatively determining nutrients in organic energy resources can be used.
As an example, in the present embodiment, a near-infrared analyzer NIRMaster manufactured by Buch Japan Co., Ltd. is used, but the present invention is not limited to this.

  The main nutrient specifying means 230 is a computer including a known CPU and memory. The main nutrient specifying means 230 performs the analysis described in the above-described raw material analysis step based on the result of the analysis by the nutrient analyzing means 220. As a result, the types and amounts of nutrients contained in the analyzed organic energy resources are specified, so which of them is the main nutrient is specified.

The raw material storage tank selecting means 240 has a function of selecting a storage destination based on a predetermined selection priority. The raw material storage tank selecting means 240 is a computer including a known CPU and memory which also function as the main nutrient specifying means 230.
The above-mentioned selection priority may be stored in the memory as electronic data.

  The contents of the selection priority in this embodiment include (α) a mixed type tank T5 when it is analyzed that there is no nutrient serving as a main nutrient, and (β) an organic material containing a nutrient serving as a main nutrient. For sexual energy resources, raw material storage tanks classified by the main nutrients are respectively selected.

  Note that the above selection priority is an example, and for example, as in a second embodiment described later, first, the mixed type tank T5 is set as the highest priority selection destination, and then the organic energy resources containing nutrients serving as main nutrients are selected. Alternatively, a raw material storage tank classified by the main nutrient may be selected.

  The raw material fermentation control means 250 has a function of controlling the fermentation of the biomass raw material stored in each raw material storage tank T by the method described in the above-described raw material fermentation control step. More specifically, various measuring instruments such as a thermometer (not shown), a pH meter, a liquid viscometer, an alkalinity meter, and a VFA meter are arranged in each raw material storage tank T. The raw material fermentation control unit 250 maintains and manages the parameters to be set in the above-mentioned predetermined range.

<< 2nd Embodiment >>
[Biomass raw material storage method and storage system]
Next, a biomass raw material storage method and a biomass raw material storage system according to a second embodiment of the present invention will be described with reference to FIGS. Note that, in the present embodiment, the same components as those described in detail in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

  First, as shown in FIG. 4, the biomass raw material storage system 200 of the present embodiment includes a resource receiving means 210 for receiving an organic energy resource, and an empty detection for detecting an empty space in the mixed type tank T5 for receiving the organic energy resource. Means 280, and when the mixed type tank T5 has an empty space, the organic energy resource is supplied to the mixed type tank T5 as a biomass raw material with the highest priority, and when there is no empty space in the mixed type tank T5, A raw material storage tank selecting means 240 for inputting the organic energy resource as a biomass raw material with one of the divided raw material storage tanks as a storage destination, and controlling fermentation of the biomass raw material in the tank in which the biomass raw material is stored. And raw material fermentation control means 250.

Further, in the biomass raw material storage system 200 of the present embodiment, the nutrient analyzing means 220 for analyzing the nutrients of the organic energy resources received by the resource receiving means 210 described above, and the main nutrients which are the main nutrients among the analyzed nutrients And a main nutrient specifying means 230 that specifies
Further, the biomass raw material storage system 200 of the present embodiment may further have the remaining configuration shown in FIG. 4 (for example, the configuration such as the receiving unit 260 described in the first embodiment).
Among them, the resource receiving unit 210, the nutrient analysis unit 220, the main nutrient specifying unit 230, and the raw material fermentation control unit 250 have the same configuration as in the first embodiment, and thus the detailed description is omitted.

  First, in step 11 of FIG. 3, organic energy resources are received via the resource receiving means 210 of the biomass raw material storage system 200 described above. Step 11 in the second embodiment is the same as step 1 in the first embodiment, and a description thereof will be omitted.

  Next, at step 12, an empty space of the mixed type tank T5 for receiving the organic energy resources is detected. More specifically, the raw material storage tank selecting means 240 of the biomass raw material storage system 200 shown in FIG. 4 selects a storage destination based on a predetermined selection priority. As the selection priority in the present embodiment, it is defined that the mixing type tank T5 is set as the highest priority input destination, and then any one of the raw material storage tanks classified by the main nutrient is input as the storage destination.

  Therefore, in this step 12, a known optical sensor or the like as an empty detecting means is provided in the mixing type tank T5, and the raw material storage tank selecting means 240 receives the mixing through the empty detecting means (such as the optical sensor). It is detected whether there is an empty space in the type tank T5. In the present embodiment, the optical sensor is applied as the empty detecting means. However, the present invention is not limited to this mode, and various kinds of known sensors may be applied as long as the amount of the organic energy resources and the empty space in the tank can be detected. Is also good.

  Next, when there is an empty space in the mixed type tank T5 in the step of detecting the empty space (step 12), the organic energy resource is put into the mixed type tank T5 as a biomass raw material with the highest priority (step 13-1). On the other hand, when there is no empty space in the mixed type tank T5 in the step of detecting the empty space, the organic energy resource is supplied as a biomass raw material to one of the raw material storage tanks separated by the main nutrient as a storage destination (step). 13-2).

  More specifically, in Steps 13-1 and 13-2, the raw material storage tank selecting means 240 gives the highest priority to the organic energy resource as a biomass raw material in the mixed type tank T5 when there is an empty space in the mixed type tank T5. At the same time, when there is no room in the mixed type tank T5, a function of inputting the organic energy resource as a biomass raw material is executed with one of the raw material storage tanks separated by the main nutrient as a storage destination.

In FIG. 4 of the present embodiment, only the carbohydrate-rich tank T1 is shown as a raw material storage tank divided by main nutrients. As described above, the “separated raw material storage tank” in the present embodiment only needs to include at least any one of the sugar-rich tank T1, the lipid-rich tank T2, the protein-rich tank T3, and the fiber-rich tank T4. As shown, one type or several types of raw material storage tanks T may be provided.
At this time, as described in the first embodiment, it is preferable that the raw material storage tank (such as the carbohydrate-rich tank T1) partitioned by the main nutrient is maintained and managed under conditions different from those of the mixed type tank T5.

Then, after the organic energy resources are supplied to the mixed type tank T5 as the biomass raw material with the highest priority in step 13-1, it is determined whether or not new organic energy resources are accepted (step 14-1). If not accepted, the biomass raw material is maintained and controlled (fermentation suppression) in the tank in step 15. Step 14-1 may be omitted as appropriate.
Step 15 in the second embodiment is the same as step 6 in the first embodiment, and a description thereof will not be repeated. The parameters for maintaining the raw material storage tank in the step of suppressing the fermentation of the biomass raw material preferably include at least one of the temperature, pH, and liquid viscosity in the raw material storage tank.

  On the other hand, as described above, the raw material storage tank selection means 240 determines that the nutrient analysis means 220 and the main nutrient identification means 230 of the biomass raw material storage system 200 have not Analyze nutrients of sexual energy resources (step 13-2). Then, in the subsequent step 14-2, the raw material storage tank selecting means 240 puts the organic energy resource into a predetermined raw material storage tank based on a predetermined selection priority (step 14-2).

Here, for example, when the “separated raw material storage tank” is only the saccharide-rich tank T1, the raw material storage tank selecting means 240 switches to the saccharide-rich tank T1 when the analyzed nutrient is saccharide-rich. Inject organic energy resources.
For example, when the “separated raw material storage tanks” are four types of raw material storage tanks of a carbohydrate-rich tank T1, a lipid-rich tank T2, a protein-rich tank T3, and a fiber-rich tank T4, the main nutrient identification is performed. Based on the main nutrient specified by the means 230, the raw material storage tank selecting means 240 inputs the organic energy resource into a tank corresponding to the main nutrient.
As described above, the selection priority next to the highest-priority input to the mixed-type tank is to selectively input the organic energy resources to the “separated raw material storage tank” based on the specified main nutrient.

Then, after the organic energy resources are selectively input to the “separated raw material storage tanks” in step 14-2, the organic energy resources are maintained and controlled (fermentation suppression) as biomass raw materials in the storage tanks in step 15. You.
Then, in the following step 16, it is determined whether or not a new organic energy resource has been accepted. If there is a new acceptance, the process returns to step 11 to continue the above-described processing. Maintenance and management (fermentation suppression) of biomass raw materials will be continued.

  In this embodiment, since the mixed type tank T5 has a relatively large increase and decrease in organic energy resources, the maintenance parameters of the mixed type tank T5 may be updated at the timing of receiving a new organic energy resource. Good. For example, the raw material fermentation control means 250 of the biomass raw material storage system 200 adjusts the amount of received organic energy resources when the organic The parameters for the maintenance of the mixing type tank T5 may be updated based on this.

  As described above, according to the biomass raw material storage method and the biomass raw material storage system of the present invention, it is possible to safely store for only a predetermined time while controlling the fermentation of the appropriately sorted biomass raw material. It can contribute to the supply of raw materials to power generation facilities. In the above embodiment, the description has been made with a focus on controlling the fermentation of the raw material. However, the present invention can also be applied to efficient methane fermentation and highly efficient methane gas generation.

Reference Signs List 200 Biomass raw material storage system 210 Resource receiving means 220 Nutrient analysis means 230 Main nutrient specifying means 240 Raw material storage tank selecting means 250 Raw material fermentation control means 260 Receiving means 270 Supply biomass raw material determining means 280 Free space detecting means BPG Biomass power generation equipment CM Biomass power generation business Person

Claims (8)

Detecting a vacancy in the mixing tank to receive organic energy resources;
In the case where there is an empty space in the mixed type tank in the step of detecting the empty space, a step of putting the organic energy resources into the mixed type tank as a biomass raw material with the highest priority,
In the case where there is no room in the mixed type tank in the step of detecting the space, a step of charging the organic energy resources as a biomass raw material as a storage destination in a raw material storage tank separated by a main nutrient,
Controlling the fermentation of the biomass raw material in the mixed type tank and the raw material storage tank in which the biomass raw material is stored ,
A method for storing a biomass raw material, comprising: The raw material storage tank divided by the main nutrients, at least, a carbohydrate-rich tank, a lipid-rich tank, a protein-rich tank, and any of the fiber-rich tank,
The biomass raw material storage method according to claim 1, wherein the raw material storage tank divided by the main nutrient is maintained and managed under conditions different from those of the mixed type tank. Further comprising a raw material analysis step of analyzing the amount of nutrients contained in the organic energy resources,
The biomass raw material storage method according to claim 1 or 2, wherein the analyzed organic energy resources are stored in a raw material storage tank divided based on the main nutrients based on a result of the analysis.   The parameters for maintaining the raw material storage tank in the step of suppressing the fermentation of the biomass raw material include at least one of the temperature, pH, and liquid viscosity in the raw material storage tank. The biomass raw material storage method according to any one of the above. Resource receiving means for receiving organic energy resources;
Vacancy detection means for detecting the vacancy of the mixed type tank for receiving the organic energy resources,
When the mixed-type tank has an empty space, the organic energy resources are put into the mixed-type tank as a biomass raw material with the highest priority, and when there is no empty space in the mixed-type tank, the raw material storage tank is separated by a main nutrient. A raw material storage tank selecting means for inputting the organic energy resources as a biomass raw material as a storage destination,
In the mixed type tank and the raw material storage tank where the biomass raw material is stored, a raw material fermentation control unit that controls fermentation of the biomass raw material,
The biomass raw material storage system characterized by having. The raw material storage tank divided by the main nutrients, at least, a carbohydrate-rich tank, a lipid-rich tank, a protein-rich tank, and any of the fiber-rich tank,
The biomass raw material storage system according to claim 5, wherein the raw material storage tank partitioned by the main nutrient is maintained and managed under conditions different from those of the mixed type tank. Further comprising a nutrient analysis means for analyzing the amount of nutrients contained in the organic energy resources,
The biomass raw material storage according to claim 5 or 6, wherein the analyzed organic energy resources are stored in a raw material storage tank divided by the main nutrient based on an analysis result of the nutrient analysis means. system. The raw material fermentation control means suppresses fermentation of the biomass raw material using at least any one of temperature, pH, and liquid viscosity in the raw material storage tank. The biomass raw material storage system according to claim 1.