JP7255198B2 - ecosystem - Google Patents

Description

The present invention relates to ecosystems.

Conventionally, most of the digestive fluid discharged from wet methane fermentation facilities is used as compost or liquid fertilizer. However, when assuming a power generation business (for example, operation of a methane fermentation facility) in the suburbs of a city, it is difficult to use it as compost. In that case, the digestive fluid is dehydrated and then incinerated as sludge waste or dried to be converted into solid fuel.

JP 2017-144415 A JP 2014-037457 A

By the way, the drying process for converting the digestive juice into a solid fuel only evaporates water from the dehydrated cake obtained by dehydrating the digestive juice. Therefore, the calorific value of the dehydrated cake is not stable depending on the raw materials for wet methane fermentation (for example, sewage sludge, livestock manure, food residue, etc.) and the mixing ratio of the materials mixed with the raw materials. Therefore, there was a problem that the use of solid fuel did not advance.

In view of the above circumstances, an object of the present invention is to provide a technology capable of promoting the use of solid fuel.

In one aspect of the present invention, an auxiliary fuel is mixed in a predetermined ratio with a dehydrated cake produced by dehydrating digestive juice obtained by subjecting a raw material to wet methane fermentation. Then, a mixing facility that generates fuel so as to have a predetermined calorific value within a predetermined range, a fuel use facility that uses the generated fuel, and a residue processing facility that uses the residue of the fuel. and a control system for controlling the mixing facility with information on the input ratio of the auxiliary fuel according to the properties of the dehydrated cake , wherein the control system controls the mixing facility according to the properties of the generated fuel. and further controlling the use of the fuel by providing the obtained information on where the fuel is used to the fuel-using facility.
In one aspect of the present invention, an auxiliary fuel is mixed in a predetermined ratio with a dehydrated cake produced by dehydrating digestive juice obtained by subjecting a raw material to wet methane fermentation. Then, a mixing facility that generates fuel so as to have a predetermined calorific value within a predetermined range, a fuel use facility that uses the generated fuel, and a residue processing facility that uses the residue of the fuel. and a control system for controlling the mixing facility by providing information on the charging ratio of the auxiliary fuel to the mixing facility according to the properties of the dehydrated cake, wherein the control system controls the mixing facility. an ecosystem for further controlling the use of the fuel residue by acquiring information on the usage destination of the fuel residue according to the above and providing the acquired information on the usage destination of the fuel residue to the residue processing facility. is.

One aspect of the present invention is the above ecosystem, wherein the control system is a fermenter that performs wet methane fermentation of the raw material or a dehydration that dehydrates the digestive juice, depending on the properties of the dehydrated cake. Further control the operation of either or both of the facilities.

The present invention makes it possible to promote the use of solid fuel.

1 is a configuration diagram showing the system configuration of an ecosystem in the present invention; FIG. It is a figure which shows the structure of the methane fermentation power generation facility in this embodiment. It is a figure which shows the structure of the fuel production facility in this embodiment. It is a figure which shows the structure of the control system in this embodiment. It is a figure which shows the structural example of the table for methane fermentation power generation facilities in this embodiment. It is a figure which shows the structural example of the table for fuel manufacturing facilities in this embodiment. It is a figure which shows the structural example of the table for fuel using facilities in this embodiment. It is a figure which shows the structural example of the table for residue processing facilities in this embodiment. FIG. 4 is a sequence diagram showing the flow of ecosystem processing in this embodiment.

An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a configuration diagram showing the system configuration of an ecosystem 100 in the present invention. The ecosystem 100 includes a methane fermentation power generation facility 10 , a fuel production facility 20 , a fuel use facility 30 , a residue processing facility 40 , a control system 50 and an information display terminal 60 .

The methane fermentation power generation facility 10 is a facility for methane fermentation and treatment of raw materials obtained from the outside. For example, the methane fermentation power generation facility 10 is a facility that performs wet methane fermentation. Raw materials are, for example, sewage sludge, livestock manure, food residue, and the like. The methane fermentation power generation facility 10 obtains fermentation residue (hereinafter referred to as “digestive liquid”) and methane gas (biogas) by subjecting raw materials to methane fermentation.

The methane fermentation power generation facility 10 produces dehydrated raw materials (hereinafter referred to as "dehydrated cake") by dehydrating the digestive fluid. Moreover, the methane fermentation power generation facility 10 uses methane gas to generate power. Power generation performed in the methane fermentation power generation facility 10 is biomass power generation that does not use fossil fuels. The power generated by the methane fermentation power generation facility 10 is used outside or within the facility itself.

The methane fermentation power generation facility 10 monitors the properties of the digestive juice and/or the dehydrated cake by measuring at least part of the water content and the calorific value of the digestive juice and/or the dehydrated cake, or an item serving as a substitute index for the calorific value. . The calorific value is the higher calorific value. As the method for measuring the calorific value, another method for measuring the calorific value of solid fuels (eg, the method for measuring sewage sludge solid fuel JIS Z7312) is used. Also, alternative indices for the calorific value include COD (Chemical Oxygen Demand) concentration, SS (Suspended Solids) concentration, VSS (Volatile Suspended Solids) concentration, heat loss, and the like.

The methane fermentation power generation facility 10 transmits the results of monitoring the properties of the digestive juice and/or the dehydrated cake to the control system 50 . The methane fermentation power generation facility 10 receives control instructions from the control system 50 according to the monitoring results of the digestive fluid and/or the dehydrated cake. The methane fermentation power generation facility 10 controls equipment within the facility according to the control instruction. The control instructions include control details regarding methane fermentation and dehydration of the dehydrated cake.

The fuel production facility 20 is a facility that produces solid fuel using the dehydrated cake obtained by the methane fermentation power generation facility 10 . The fuel manufacturing facility 20 receives information about the mixing ratio of the dehydrated cake and the auxiliary fuel (hereinafter referred to as “mixing information”) from the control system 50 . The fuel manufacturing facility 20 mixes the dehydrated cake and the auxiliary fuel at a predetermined ratio based on the received mixing information, thereby manufacturing a solid fuel having a predetermined calorific value within a predetermined range. . Note that the fuel production facility 20 may compress and mold the mixture after mixing. The auxiliary fuel is, for example, wood chips, or solidified waste fuels such as RPF (Refuse Paper & Plastic Fuel) and RDF (Refuse Derived Fuel). The fuel manufacturing facility 20 also transmits information on the properties of the manufactured solid fuel (hereinafter referred to as “solid fuel information”) to the control system 50 .

The fuel use facility 30 is a facility that uses the solid fuel produced at the fuel production facility 20 . For example, fuel use facility 30 is a power plant or factory. The fuel use facility 30 receives the solid fuel information from the control system 50, and uses the solid fuel produced at the fuel production facility 20 at an appropriate destination based on the received solid fuel information. Specifically, the fuel use facility 30 uses solid fuel for biomass power generation, boilers, and the like. The solid fuel residue (hereinafter referred to as “soot and dust”) burned in the fuel use facility 30 is sent to the residue processing facility 40 . The fuel use facility 30 also transmits information on the properties of soot and dust (hereinafter referred to as “soot and dust information”) to the control system 50 .

The residue processing facility 40 is a facility that utilizes dust sent from the fuel use facility 30 . The residue processing facility 40 receives the dust information from the control system 50, and uses the dust sent from the fuel use facility 30 in an appropriate place of use based on the received dust information. Specifically, the residue processing facility 40 uses soot and dust for roads and civil engineering materials. Since the dehydrated cake from the methane fermentation power generation facility 10 that performs wet methane fermentation has a low content of heavy metals such as fluorine and chromium, the amount of heavy metals eluted as specified by the soil environmental standards is also very small (below the standard value). is. Therefore, the soot and dust can be granulated or solidified and used as they are for roads and civil engineering materials.

The control system 50 controls each facility by providing information according to the processing performed at each facility. Further, the control system 50 communicates with the information display terminal 60 depending on the situation, and provides information to the user holding the information display terminal 60 . For example, when an abnormality occurs in the facility or when maintenance is required, the control system 50 provides the user via the information display terminal 60 with information such as an abnormality item or a maintenance method for the abnormality.

The information display terminal 60 is a communication device operated by a worker. The information display terminal 60 is configured using an information processing device such as a smart phone, a mobile phone, a tablet terminal, a notebook computer, or a personal computer. The worker may be, for example, a worker who performs maintenance when an abnormality occurs in each facility, or may be a worker who works at each facility.

FIG. 2 is a diagram showing the configuration of the methane fermentation power generation facility 10 in this embodiment.
The methane fermentation power generation facility 10 includes a pretreatment facility 11 , a fermenter 12 , a dehydration facility 13 , a gas holder 14 , a power generation facility 15 , a sensor 16 , a sensor 17 , a communication device 18 and a control device 19 .
The pretreatment facility 11 performs predetermined pretreatment on the raw material. Specifically, the pretreatment facility 11 removes substances unsuitable for fermentation from the raw material, and crushes the raw material after the removal of unsuitable substances for fermentation to reduce the size of the raw material. Next, the pretreatment facility 11 adjusts the water content so that the water content is required for methane fermentation.

The fermenter 12 anaerobicly digests (methane fermentation) the pretreated raw material containing organic matter. The methane fermentation conditions (for example, temperature, reaction time and raw material input ratio) in the fermenter 12 are controlled by the controller 19 . Methane gas is generated in the fermentation tank 12 by methane fermentation. The generated methane gas flows into the gas holder 14 via a supply line (not shown) connecting the fermenter 12 and the gas holder 14 . Also, in the fermentation tank 12, a digestive juice, which is a residue after methane gas is generated, is stored. The digestive liquid flows into the dehydration equipment 13 through a supply line (not shown) connecting the fermenter 12 and the dehydration equipment 13 .
An inorganic and/or polymeric coagulant may be added to the digestive liquid before flowing into the dehydration equipment 13 .

The dehydration facility 13 dehydrates the digestive liquid that has flowed in from the fermenter 12 . The type of dehydrator provided in the dehydration equipment 13 is not limited, but any dehydrator such as a centrifugal dehydrator, a screw press dehydrator, or a belt press dehydrator is provided. In addition, the dehydration equipment 13 may be equipped with a dryer as needed. In the dehydration equipment 13, the rotation speed of the screw of the dehydrator and the dehydration time are adjusted under the control of the control device 19. FIG. The digestive liquid flows into the dehydration equipment 13, is dehydrated, and is separated into solids containing water (dehydrated cake) and water containing turbidity (dehydrated filtrate). The dehydrated cake produced in the dehydration equipment 13 has a moisture content of around 80%.

Gas holder 14 stores the methane gas generated in fermenter 12 .
The power generation equipment 15 uses the methane gas stored in the gas holder 14 to generate electric power and thermal energy. The power generation equipment 15 supplies the generated electric power to each device outside or within its own facility. Moreover, the power generation equipment 15 may supply the fermenter 12 with thermal energy generated during power generation.

The sensor 16 measures at least one of the concentration of sludge in the digestive juice, the content of a component serving as a substitute index for the calorific value in the digestive juice, and the calorific value. The sensor 16 is, for example, a sensor that measures the sludge concentration in the digestive juice, a sensor that measures the COD concentration or the like contained in the digestive juice, or a heat sensor that measures the calorific value.

The sensor 17 measures the SS concentration or turbidity of the dewatered filtrate, and at least one of the moisture content (or moisture content) of the dehydrated cake, the calorific value of the dehydrated cake, and a substitute index for the calorific value of the dehydrated cake. Note that the sensor 17 may measure only at least one of the moisture content of the dehydrated cake, the calorific value of the dehydrated cake, and the substitute index for the calorific value of the dehydrated cake. In this case, the methane fermentation power generation facility 10 is separately equipped with a sensor for measuring the SS concentration or turbidity of the dehydrated filtrate.
The communication device 18 is a device that communicates with the control system 50 . The communication device 18 transmits measurement results of the sensors 16 and 17 to the control system 50 . Communication device 18 receives control instructions from control system 50 .

The control device 19 controls the operation of one or both of the fermenter 12 and the dehydration equipment 13 according to the control contents included in the control instruction received by the communication device 18 . For example, controller 19 controls the temperature within fermenter 12, the reaction time and the dosage rate. Further, for example, the control device 19 controls the rotational speed of the dehydrator (for example, the rotational speed of the screw) and the dehydration time of the dehydration equipment 13 .

FIG. 3 is a diagram showing the configuration of the fuel production facility 20 in this embodiment.
The fuel manufacturing facility 20 comprises a dryer 21 , a mixing facility 22 , a communication device 23 and a control device 24 .
The dryer 21 dries the dehydrated cake obtained by the methane fermentation power generation facility 10 .
The mixing facility 22 mixes the dehydrated cake after drying and the auxiliary fuel at a mixing ratio controlled by the control device 24 . Solid fuel is thereby produced. Note that the mixing facility 22 may compress and mold the mixed mixture to produce a solid fuel.

The communication device 23 is a device that communicates with the control system 50 . The communication device 23 transmits information regarding properties of the solid fuel to the control system 50 . Communication device 23 receives mixing information from control system 50 .

The control device 24 controls the mixing facility 22 according to the contents included in the mixing information received by the communication device 23 so as to adjust the mixing ratio of the dehydrated cake after drying and the auxiliary fuel.

FIG. 4 is a diagram showing the configuration of the control system 50 in this embodiment.
The control system 50 is configured using one or more information processing devices. When the control system 50 is composed of one information processing device, the control system 50 includes a CPU (Central Processing Unit), a memory, an auxiliary storage device, etc. connected by a bus, and executes a control program. By executing the control program, the control system 50 functions as a device including a first communication section 51, a control section 52, a storage section 53, and a second communication section . All or part of each function of the control system 50 uses hardware such as ASIC (Application Specific Integrated Circuit), PLD (Programmable Logic Device), FPGA (Field Programmable Gate Array), and GPU (Graphics Processing Unit). may be implemented. Also, the control program may be recorded on a computer-readable recording medium. Computer-readable recording media include portable media such as flexible disks, magneto-optical disks, ROMs and CD-ROMs, and storage devices such as hard disks incorporated in computer systems. Also, the control program may be transmitted and received via an electric communication line.

The first communication unit 51 communicates with communication devices provided in each facility. For example, the first communication unit 51 receives the monitoring results of the properties of the digestive juice and/or the dehydrated cake from the communication device 18 provided in the methane fermentation power generation facility 10, and receives the received monitoring results of the properties of the digestive juice and/or the dehydrated cake. to the communication device 18. Also, for example, the first communication unit 51 receives the monitoring result of the properties of the dehydrated cake from the communication device 18 provided in the methane fermentation power generation facility 10 . Mixed information corresponding to the received result of monitoring the properties of the dehydrated cake is transmitted to the communication device 23 provided in the fuel production facility 20, and solid fuel information is received from the communication device 23.

Further, for example, the first communication unit 51 transmits notification information corresponding to the received solid fuel information to the communication device provided in the fuel use facility 30 and receives dust information from the communication device provided in the fuel use facility 30 . Further, for example, the first communication unit 51 transmits notification information corresponding to the dust information to the communication device provided in the residue processing facility 40 .

The control unit 52 is composed of an information acquisition unit 521 and an instruction information generation unit 522 .
The information acquisition unit 521 acquires information from the storage unit 53 according to the information received by the first communication unit 51 .
The instruction information generation unit 522 generates instruction information for the worker who has the information display terminal 60 based on the information for the worker acquired by the information acquisition unit 521 .

The storage unit 53 stores various information. The storage unit 53 stores, for example, a methane fermentation power generation facility table 531, a fuel production facility table 532, a fuel use facility table 533, a residue processing facility table 534, and an operator information table 535. The storage unit 53 is configured using a storage device such as a magnetic hard disk device or a semiconductor storage device.

FIG. 5 is a diagram showing a configuration example of the methane fermentation power generation facility table 531 in this embodiment.
The methane fermentation power generation facility table 531 is a table in which control contents corresponding to properties of digestive fluid and/or dehydrated cake are associated and registered. In the table 531 for the methane fermentation power generation facility, the water content of the dehydrated cake and the control details obtained in advance through experience and experiments are registered so that the cost can be optimized according to the properties of the digestive fluid and/or the dehydrated cake. ing.

The methane fermentation power generation facility table 531 has a plurality of records representing control details according to the properties of the digestive fluid and/or the dehydrated cake. The record has respective values of digestive juice and/or dehydrated cake properties and control details. The value of the properties of the digestive juice and/or dehydrated cake is the water content of the digestive juice and/or dehydrated cake measured by the sensors 16 and 17 provided in the methane fermentation power generation facility 10, respectively, and the alternative index of the calorific value (COD concentration, SS concentration, VSS concentration, heat loss, etc.) solids concentration and calorific value. The contents of control are the contents of control concerning the dehydration equipment 13 and the fermenter 12, and are, for example, the rotational speed of the dehydrator, the amount of chemicals, the dehydration treatment time, the temperature, the residence time, and the input amount of raw materials.

The value of the rotation speed of the dehydrator, for example, represents the rotation speed of the screw when the dehydrator is a screw press dehydrator, and represents the rotation speed of the rotating body provided in the centrifugal dehydrator when the dehydrator is a centrifugal dehydrator. , represents the rotation speed of the rollers when the dehydrator is a belt press dehydrator. The amount of drug represents the amount of water content reducing drug used during dehydration. The dehydration processing time represents the time for dehydration processing in the dehydration equipment 13 . The temperature represents the temperature within the fermenter 12 . Residence time represents the amount of time the raw material is fermented in the fermenter 12 . The raw material input amount represents the input amount of the raw material. It should be noted that not all items need to be registered in the methane fermentation power generation facility table 531, and the values of some items may not be registered. That is, depending on the properties of the dehydrated cake, only the control contents of the dehydration equipment 13 may be registered, only the control contents of the fermentation tank 12 may be registered, or part of the control contents of the dehydration equipment 13 may be registered. and part of the control contents of the fermenter 12 may be registered in combination.

FIG. 6 is a diagram showing a configuration example of the fuel manufacturing facility table 532 in this embodiment.
The fuel manufacturing facility table 532 is a table in which values of supplementary fuel input ratios corresponding to the properties of the dehydrated cake are associated and registered. In the table 532 for the fuel production facility, supplementary fuel obtained in advance through experience and experiments is added so that the generated solid fuel has a predetermined calorific value within a predetermined range according to the properties of the dehydrated cake. A percentage value is registered. That is, by mixing the auxiliary fuel with the dehydrated cake at the value of the auxiliary fuel input ratio registered in the fuel manufacturing facility table 532, a predetermined amount of heat generation within a predetermined range can be obtained according to the properties of the dehydrated cake. A large amount of solid fuel can be produced.

The fuel manufacturing facility table 532 has a plurality of records representing the value of the supplementary fuel input ratio according to the properties of the dehydrated cake. The record has respective values of dehydrated cake property and auxiliary fuel input rate. The value of the dehydrated cake property is the water content of the digestive juice measured by the sensors 16 and 17 provided in the methane fermentation power generation facility 10, the water content of the dehydrated cake, and the alternative index of the calorific value in the digestive juice (COD concentration, SS concentration, VSS concentration, heat loss, etc.) and/or solids concentration such as the content of components (components such as moisture, ash, chlorine, fluorine and chromium) that serve as alternative indicators for calorific value. The supplementary fuel input ratio represents the supplementary fuel input ratio such as wood chips, RPF and RDF.

In general, if the components contained in the digestive juice are known as the properties of the dehydrated cake, it is possible to specify the auxiliary fuel to be mixed. Also, if the water content is known as the properties of the dehydrated cake, it is possible to specify how much auxiliary fuel should be mixed. Therefore, based on such experiences and experiments, the value of the auxiliary fuel input ratio corresponding to the properties of the dehydrated cake is registered in the fuel manufacturing facility table 532 . Note that not all items need to be registered in the fuel manufacturing facility table 532, and the values of some items may not be registered. That is, depending on the properties of the dehydrated cake, only the input ratio of wood chips may be registered, only the input ratio of RPF may be registered, or only the input ratio of RDF may be registered. However, the input ratio when any two of wood chips, RPF and RDF are combined may be registered.

For example, let Q1 be the total calorific value of the dehydrated cake, and Q2, Q3, and Q4 be the total calorific values of the auxiliary fuels, i.e., wood chips, RPF, and RDF (all units are J/g). are respectively w1, w2, w3, and w4 (0≤w1, w2, w3, w4≤1, w1+w2+w3+w4=1), the calorific value after mixing Qtotal represented by the following formula (a) falls within a predetermined range. Adjust the input ratios w1 to w4 as follows.
Calorific value after mixing Qtotal (J/g)=Q1*w1+Q2*w2+Q3*w3+Q4*w4 (a)
By adjusting the calorific value of the mixed fuel within a certain range, the auxiliary fuel can be used effectively.

FIG. 7 is a diagram showing a configuration example of the fuel using facility table 533 in this embodiment.
The fuel using facility table 533 is a table in which the values of solid fuel usage destinations corresponding to solid fuel information are registered in association with each other. The fuel using facility table 533 has a plurality of records representing the value of the solid fuel fuel use destination corresponding to the solid fuel information. The record has respective values of solid fuel information and where to use. The solid fuel information represents information about properties of the solid fuel. The fuel usage destination represents a usage destination where the solid fuel can be used or the use of the solid fuel is recommended. It is used for power generation in power generation facilities and for boilers in factories.

FIG. 8 is a diagram showing a configuration example of the residue processing facility table 534 in this embodiment.
The residue processing facility table 534 is a table in which the values of the soot and dust usage destinations corresponding to the soot and dust information are registered in association with each other. The residue processing facility table 534 has a plurality of records representing the value of the soot and dust usage destination according to the soot and dust information. The record has each value of dust information and dust usage place. The dust information represents information on properties of the solid fuel. The usage of soot and dust indicates the usage where the soot and dust can be used or where the use of soot and dust is recommended. Soot and dust are used for road paving and civil engineering materials.

Returning to FIG. 4, the description of the control system 50 is continued.
The worker information table 535 is a table in which information about workers is registered. The worker information table 535 includes identification information for identifying the worker, position information of the worker, specialized field of the worker, contact information (for example, address information) to the information display terminal 60 possessed by the worker, and Identification information and the like of the information display terminal 60 possessed by the worker are associated and registered. The position information of the worker is appropriately updated with the position information periodically transmitted from the information display terminal 60 or the position information requested and acquired from the control system 50 .

The second communication unit 54 communicates with the information display terminal 60 . Specifically, the second communication unit 54 transmits the instruction generated by the instruction information generation unit 522 to the target information display terminal 60 . The second communication unit 54 also receives position information from the information display terminal 60 and updates the position information registered in the worker information table 535 based on the received position information.
Further, by selecting the instruction content generated by the instruction information generation unit 522 based on the identification information of the information display terminal 60, it is possible to limit the transmission information to the information display terminal 60 in advance. For example, the second communication unit 54 transmits only the information of each facility table stored in the storage unit 53 corresponding to each facility to the information display terminal 60 .

FIG. 9 is a sequence diagram showing the flow of processing of the ecosystem 100 in this embodiment.
The sensor 16 provided in the methane fermentation power generation facility 10 monitors the properties of the digestive juice and/or the dehydrated cake (step S101). The sensor 16 outputs information on the properties of the digestive juice and/or the dehydrated cake to the communication device 18 as a monitoring result. The communication device 18 transmits the information on the properties of the digestive juice and/or the dehydrated cake obtained from the sensor 16 to the control system 50 (step S102).

The first communication unit 51 of the control system 50 receives information on properties of the digestive juice and/or the dehydrated cake transmitted from the methane fermentation power generation facility 10 . The first communication unit 51 outputs the received information on the properties of the digestive juice and/or the dehydrated cake to the information acquisition unit 521 . The information acquisition unit 521 acquires control details using the output information on the properties of the digestive juice and/or the dehydrated cake and the methane fermentation power generation facility table 531 (step S103). Specifically, the information acquisition unit 521 refers to the methane fermentation power generation facility table 531 to acquire records corresponding to the properties of the acquired digestive juice and/or dehydrated cake. Then, the information acquisition unit 521 acquires the value registered in the control content item of the acquired record. The information acquisition unit 521 outputs the acquired control content value to the first communication unit 51 . The first communication unit 51 transmits the value of the control content output from the information acquisition unit 521 to the methane fermentation power generation facility 10 (step S104).

The communication device 18 of the methane fermentation power generation facility 10 receives the control content value transmitted from the control system 50 . The communication device 18 outputs the value of the received control content to the control device 19 . The control device 19 controls the operation of one or both of the fermenter 12 and the dehydration facility 13 according to the value of the output control details (step S105). When the control is performed, the dehydration equipment 13 performs a dehydration process to produce a dehydrated cake (step S106). The sensor 17 measures the SS concentration or turbidity of the dewatered filtrate, and at least one of the moisture content of the dewatered cake, the calorific value of the dehydrated cake, and a substitute index for the calorific value of the dehydrated cake. The sensor 17 outputs measurement results to the communication device 18 . The communication device 18 transmits the measurement results obtained from the sensor 17 to the control system 50 as the properties of the dehydrated cake (step S107).

The dehydrated cake produced at the methane fermentation power generation facility 10 is delivered to the fuel production facility 20 by transportation. Each dehydrated cake may be provided with identification information for identifying the dehydrated cake so that it can be monitored to which fuel production facility 20 the dehydrated cake has been delivered. In the fuel manufacturing facility 20 , the delivered dehydrated cake is dried in a dryer 21 and the dried dehydrated cake is introduced into the mixing facility 22 .

The first communication unit 51 of the control system 50 receives information on the properties of the dehydrated cake transmitted from the methane fermentation power generation facility 10 . The first communication unit 51 outputs the received information on the properties of the dehydrated cake to the information acquisition unit 521 . The information acquisition unit 521 acquires information on the auxiliary fuel input ratio using the output information on the properties of the dehydrated cake and the fuel production facility table 532 (step S108). Specifically, the information acquisition unit 521 refers to the fuel production facility table 532 and acquires a record corresponding to the acquired dehydrated cake properties. Then, the information acquisition unit 521 acquires the value registered in the item of the auxiliary fuel input ratio of the acquired record. The information acquisition unit 521 outputs the acquired value of the auxiliary fuel injection ratio to the first communication unit 51 . The first communication unit 51 transmits the auxiliary fuel input ratio value output from the information acquisition unit 521 to the fuel production facility 20 (step S109).

The communication device 23 of the fuel production facility 20 receives the value of the supplemental fuel input rate transmitted from the control system 50 . The communication device 23 outputs the received value of the auxiliary fuel injection ratio to the control device 24 . The controller 24 generates solid fuel by adjusting the ratio of the auxiliary fuel mixed with the dried dehydrated cake according to the output auxiliary fuel input ratio value (step S110). Specifically, first, the control device 24 determines the ratio of auxiliary fuel to be injected into the mixing facility 22 according to the value of the auxiliary fuel injection ratio. Controller 24 then causes supplemental fuel to enter mixing facility 22 at the determined rate. For example, the control device 24 may display or output a voice prompting that the auxiliary fuel should be injected into the mixing facility 22 at a determined ratio, or may control the storage that stores the auxiliary fuel and automatically supply it. You may The mixing facility 22 then mixes the dried dehydrated cake with the input auxiliary fuel to produce solid fuel.

Thereafter, the control device 24 transmits solid fuel information regarding the manufactured solid fuel to the control system 50 via the communication device 23 (step S111). The solid fuel information includes, for example, information on the auxiliary fuel used to manufacture the solid fuel and information on the ratio of the auxiliary fuel.
The solid fuel produced at the fuel production facility 20 is delivered to the fuel usage facility 30 by transportation. Each solid fuel may be provided with identification information for identifying the solid fuel so that it is possible to monitor which fuel use facility 30 the solid fuel has been delivered to.

The first communication unit 51 of the control system 50 receives solid fuel information transmitted from the fuel production facility 20 . The first communication unit 51 outputs the received solid fuel information to the information acquisition unit 521 . The information acquisition unit 521 acquires information on where the fuel is used using the output solid fuel information and the fuel use facility table 533 (step S112). Specifically, the information acquisition unit 521 refers to the fuel use facility table 533 to acquire a record corresponding to the acquired solid fuel information. Then, the information acquisition unit 521 acquires the value registered in the item of fuel use destination of the acquired record. The information acquisition unit 521 outputs the acquired value of the fuel use destination to the first communication unit 51 . The first communication unit 51 transmits the value of the fuel use destination output from the information acquisition unit 521 to the fuel using facility 30 (step S113).

The communication device of the fuel use facility 30 receives the value of solid fuel information transmitted from the control system 50 . The controller provided in the fuel use facility 30 determines where to use the solid fuel according to the value of the received solid fuel information. The control device provided in the fuel use facility 30 may display or output the determined use destination of the solid fuel. This allows the user to know where the solid fuel should be used. Then, in the fuel use facility 30, the transported solid fuel is used at the determined solid fuel use destination (step S114). After that, the communication device of the fuel using facility 30 transmits the information on the soot and dust after the solid fuel is used to the control system 50 (step S115).

The soot and dust after the solid fuel is used is delivered to the residue treatment facility 40 by transportation. Each dust may be provided with identification information for identifying the dust so that it is possible to monitor which residue processing facility 40 the dust has been delivered to.
The first communication unit 51 of the control system 50 receives the dust information transmitted from the fuel using facility 30 . The first communication unit 51 outputs the received dust information to the information acquisition unit 521 . The information acquisition unit 521 acquires information on where the soot and dust are used by using the output soot and dust information and the residue processing facility table 534 (step S116). Specifically, the information acquisition unit 521 refers to the residue processing facility table 534 and acquires a record corresponding to the acquired dust information. Then, the information acquisition unit 521 acquires the value registered in the soot and dust use destination field of the acquired record. The information acquisition unit 521 outputs the acquired value of the soot and dust usage destination to the first communication unit 51 . The first communication unit 51 transmits the soot and dust usage destination value output from the information acquisition unit 521 to the residual processing facility 40 (step S117).

The communication device of the residue processing facility 40 receives the soot and dust usage value transmitted from the control system 50 . The control device provided in the residue processing facility 40 determines the soot and dust usage destination according to the received soot and dust usage destination value. The control device provided in the residue processing facility 40 may display or output by voice the determined soot and dust usage destination. This allows the user to grasp where the dust should be used. Then, in the residue processing facility 40, the transported soot and dust is used at the determined usage destination of the soot and dust (step S118).

According to the ecosystem 100 configured as described above, it is possible to promote the use of solid fuel. Specifically, in the ecosystem 100, according to the properties of the dehydrated cake obtained by the fuel production facility 20 at the methane fermentation power generation facility 10, the dehydrated cake and , to produce a solid fuel by mixing with auxiliary materials. Thereby, the calorific value of solid fuel can be stabilized. Also, in the ecosystem 100, the control system 50 notifies the fuel usage facility 30 of an appropriate fuel usage destination according to the manufactured solid fuel. Further, in the ecosystem 100, the control system 50 notifies the residual processing facility 40 of an appropriate soot and dust usage destination according to the soot and dust after being used as fuel. As a result, the fuel use facility 30 and the residue treatment facility 40 can use the fuel and the dust at appropriate places of use. Therefore, the use of solid fuel can be promoted.

<Modification>
The properties of the dehydrated cake are basically monitored within the wet methane fermentation facility, but may be monitored from outside the facility.
The methane fermentation power generation facility 10 may be configured to dry the dehydrated cake. In this configuration, the methane fermentation power generation facility 10 may be equipped with a dryer, and the fuel production facility 20 may not be equipped with the dryer 21 .
The methane fermentation power generation facility 10 may be configured to produce solid fuel, which is performed by the fuel production facility 20 . When configured in this way, the methane fermentation power generation facility 10 has each facility and each function that the fuel production facility 20 has.
The communication device 18 provided in the methane fermentation power generation facility 10 and the control device 19 may be configured as one device (for example, a personal computer). Further, the communication device 23 provided in the fuel manufacturing facility 20 and the control device 24 may be configured as one device (for example, a personal computer).
The control system 50 may transmit the information obtained from each facility to the information display terminal 60 to share the information.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and design and the like are included within the scope of the gist of the present invention.

DESCRIPTION OF SYMBOLS 10... Methane fermentation power generation facility, 20... Fuel production facility, 30... Fuel use facility, 40... Residue treatment facility, 50... Control system, 60... Information display terminal, 11... Pretreatment facility, 12... Fermentation tank, 13... Dehydration Equipment 14 Gas holder 15 Power generation equipment 16 Sensor 17 Sensor 18 Communication device 19 Control device 21 Dryer 22 Mixing facility 23 Communication device 24 Control device 51... First communication unit, 52... Control unit, 521... Information acquisition unit, 522... Instruction information generation unit, 53... Storage unit, 54... Second communication unit

Claims (3)

Auxiliary fuel is mixed in a predetermined ratio with the dehydrated cake produced by dehydrating the digestive juice obtained by wet methane fermentation of the raw material, and the predetermined ratio is obtained. a mixing facility for producing fuel to a predetermined calorific value within a range;
a fuel use facility that uses the fuel produced;
a residue processing facility using the residue of the fuel;
a control system for controlling the mixing facility by providing information on the charging ratio of the auxiliary fuel to the mixing facility according to the properties of the dehydrated cake;
with
The control system acquires information on where the fuel is used according to properties of the generated fuel, and uses the fuel by providing the acquired information on where the fuel is used to the fuel usage facility. An ecosystem that further controls the Auxiliary fuel is mixed in a predetermined ratio with the dehydrated cake produced by dehydrating the digestive juice obtained by wet methane fermentation of the raw material, and the predetermined ratio is obtained. a mixing facility for producing fuel to a predetermined calorific value within a range;
a fuel use facility that uses the fuel produced;
a residue processing facility using the residue of the fuel;
a control system for controlling the mixing facility by providing information on the charging ratio of the auxiliary fuel to the mixing facility according to the properties of the dehydrated cake;
with
The control system acquires information on the usage destination of the fuel residue according to the fuel residue, and provides the acquired information on the usage destination of the fuel residue to the residue processing facility, thereby reusing the fuel. An ecosystem to further control the use of leftovers . The control system further controls the operation of either or both of a fermenter for wet methane fermentation of the raw material and a dehydration facility for dehydrating the digestive juice, depending on the properties of the dehydrated cake. 3. The ecosystem according to 1 or 2 .

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