Carbon intensity operation device, synthetic fuel manufacturing plant using the same, carbon intensity operation method, and carbon intensity operation program

Abstract

To provide a carbon intensity operation device capable of improving convenience in a wide range such as evaluation of effectiveness due to use of synthetic fuels, a request for a CO2 reduction amount, etc.SOLUTION: A carbon intensity operation device 40 is assembled with a CO2 operation unit for conducting gasification using a biomass feedstock and operation of a CO2 emission amount based on life cycle evaluation of a synthetic fuel manufacturing step for manufacturing SAF from a gasified product gas, a related data preparation unit for obtaining related data associated with a manufactured SAF and a CO2 emission amount obtained by the CO2 operation unit, and an output unit for outputting the related data obtained by the related data preparation unit.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a carbon intensity calculation device, a synthetic fuel production plant using the same, a carbon intensity calculation method, and a carbon intensity calculation program. [Background technology]

[0002] It is known to produce synthetic fuel from the product gas generated by gasifying biomass feedstock, as shown in Patent Document 1. There is a demand for reducing the CO2 emissions (carbon intensity) of the synthetic fuel produced in this way based on a life cycle assessment (LCA). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-166368 Summary of the Invention [Problem to be solved by the invention]

[0004] However, unless users of the manufactured synthetic fuel are specifically informed of the degree of reduction in CO2 emissions based on life cycle assessment, it will be impossible to improve convenience on a wide scale, such as by evaluating the effectiveness of users' use of synthetic fuel or submitting CO2 reduction figures to government agencies.

[0005] The present disclosure has been made in consideration of the above circumstances, and aims to provide a carbon intensity calculation device that can improve convenience in a wide range of areas, such as evaluating the effectiveness of a user's use of synthetic fuel and submitting applications for CO2 reduction amounts to government agencies, as well as a synthetic fuel production plant using the same, a carbon intensity calculation method, and a carbon intensity calculation program. [Means for solving the problem]

[0006] A carbon intensity calculation device according to one embodiment of the present disclosure includes a CO2 calculation unit that calculates CO2 emissions based on a life cycle assessment of a synthetic fuel production process in which biomass feedstock is gasified and synthetic fuel is produced from the gasified product gas, an associated data creation unit that obtains associated data that associates the produced synthetic fuel with the CO2 emissions obtained by the CO2 calculation unit, and an output unit that outputs the associated data obtained by the associated data creation unit.

[0007] A synthetic fuel production plant according to one embodiment of the present disclosure includes the above-described carbon intensity calculation device, a gasification furnace that gasifies biomass feedstock, a decarbonation device that separates CO2 from the product gas discharged from the gasification furnace, and a synthetic fuel production apparatus that obtains synthetic fuel from the product gas containing CO and H2 from which CO2 has been separated in the decarbonation device, and the CO2 separated and captured in the decarbonation device is stored and immobilized.

[0008] A carbon intensity calculation method according to one embodiment of the present disclosure includes a CO2 calculation step of calculating CO2 emissions based on a life cycle assessment of a synthetic fuel production process in which biomass feedstock is gasified and synthetic fuel is produced from the gasified product gas; an associated data creation step of obtaining associated data that associates the produced synthetic fuel with the CO2 emissions obtained by the CO2 calculation unit; and an output step of outputting the associated data obtained by the associated data creation unit.

[0009] A carbon intensity calculation program according to one aspect of the present disclosure causes a computer to function as the carbon intensity calculation device. [Effects of the Invention]

[0010] This will enable a wide range of improvements in convenience, including evaluation of the effectiveness of users' use of synthetic fuels and application of CO2 reduction amounts to government agencies. [Brief explanation of the drawings]

[0011] [Figure 1]1 is a schematic diagram showing a biomass gasification facility of a synthetic fuel production facility according to a first embodiment of the present disclosure. [Figure 2] 1 is a schematic diagram showing an FT synthesis facility of a synthetic fuel production facility according to a first embodiment of the present disclosure. FIG. [Figure 3] FIG. 2 is a hardware configuration diagram of a carbon intensity calculation device. [Figure 4] FIG. 2 is a functional block diagram of a carbon intensity calculation device. [Figure 5] FIG. 10 is a schematic diagram showing a biomass gasification facility of a synthetic fuel production facility according to a second embodiment of the present disclosure. [Figure 6] FIG. 10 is a schematic diagram showing an FT synthesis facility of a synthetic fuel production facility according to a second embodiment of the present disclosure. [Figure 7] FIG. 10 is a schematic diagram showing a biomass gasification facility of a synthetic fuel production facility according to a third embodiment of the present disclosure. [Figure 8] FIG. 10 is a schematic diagram showing an FT synthesis facility of a synthetic fuel production facility according to a third embodiment of the present disclosure. [Figure 9] FIG. 10 is a schematic diagram showing a biomass gasification facility of a synthetic fuel production facility according to a fourth embodiment of the present disclosure. [Figure 10] FIG. 10 is a schematic diagram showing a modified example of FIG. 9. [Figure 11] FIG. 10 is a schematic diagram showing a modified example of FIG. 9. DETAILED DESCRIPTION OF THE INVENTION

[0012] A first embodiment of the present disclosure will be described below with reference to the drawings. Figures 1 and 2 show a synthetic fuel production plant 1 according to this embodiment.

[0013] The synthetic fuel production plant 1 includes a biomass gasification facility 3 and an FT synthesis facility (synthetic fuel production device) 5 that uses the Fischer-Tropsch process. The synthetic fuel production plant 1 is shown in Figures 1 and 2, and is connected via reference symbol A (the same applies to the following figures).

[0014] The FT synthesis facility 5 produces SAF (Sustainable Aviation Fuel) as an example of synthetic fuel. As shown in FIG. 2, the SAF (specifically, N-SAF (neat SAF)) is transported to a refinery 6, mixed with conventional jet fuel, and stored in a mixing tank 6a. The fuel stored in the mixing tank 6a is transported to an airport 7, stored in an airport fuel tank 7a, and used as fuel for aircraft.

[0015] As shown in FIG. 1, the biomass gasification facility 3 includes a gasification furnace 11, a high-temperature SGC (Syn Gas Cooler) 12, a filter 13 which is a dust collector, a low-temperature SGC 14, and a gas purification facility 15.

[0016] The gasification furnace 11 is operated at normal pressure, approximately atmospheric pressure. Oxygen gas and steam are supplied as gasifying agents to the gasification furnace 11. Nitrogen gas is also supplied to the gasification furnace 11, mainly for sealing the biomass supply equipment.

[0017] The gasifier 11 is, for example, an entrained flow type, and generates a syngas from biomass raw materials. Biomass raw materials pulverized using a mill (not shown) or the like are fed into the gasifier 11 as needed. Examples of biomass raw materials that can be used include wood chips, wood pellets, thinned wood, waste wood, driftwood, bark, paper sludge, and agricultural residues.

[0018] In the gasifier 11, the biomass raw material supplied thereto is partially combusted by oxygen and pyrolyzed, and undergoes a water-gas shift reaction with steam to generate a product gas containing hydrogen and carbon monoxide.

[0019] The high-temperature SGC 12 cools the high-temperature product gas generated in the gasifier 11. The high-temperature SGC 12 uses feedwater heated in the low-temperature SGC 14 as a cooling medium and is equipped with heat transfer tubes 12a through which steam flows. Some steam is extracted from the heat transfer tubes 12a and used as auxiliary steam. The steam used to cool the product gas in the high-temperature SGC 12 is introduced into the gasifier 11 through a steam input tube 17.

[0020] The filter 13 is configured, for example, by a porous filter, and separates ash and char contained in the generated gas generated in the gasifier 11. The generated gas from which the ash and char have been separated is sent to the low-temperature SGC 14. The ash and char separated from the generated gas are sent to, for example, a hopper (not shown) or the like and temporarily stored therein, and are then discharged to the outside at a predetermined timing.

[0021] The low-temperature SGC 14 is provided with heat transfer tubes 14a to which feed water is supplied. The feed water flows through the heat transfer tubes 14a to cool the produced gas.

[0022] The gas purification equipment 15 uses, for example, a scrubber, and purifies the product gas from which the ash has been separated by removing impurities such as nitrogen compounds, heavy metals, and tar. The purified product gas is sent to a gas compressor 19 (Fig. 2).

[0023] As shown in FIG. 2, the FT synthesis equipment 5 includes a gas compressor 19, a decarbonation device 21, a second-stage gas purification device 22, an FT synthesis device 23, a distillation device 25, and an SAF tank 27.

[0024] The normal pressure of the produced gas is increased to, for example, about 3 MPa to 4 MPa in the gas compressor 19. The pressurized produced gas is passed through a decarbonation device 21 where CO2, H2S, etc. are removed.

[0025] The CO2 etc. separated in the decarbonation device 21 has impurities such as H2S removed in a CO2 purification facility 29. The CO2 purification facility 29 is equipped with transportation facilities such as pipelines and ships, and transports the CO2 purified by the CO2 purification facility 29 to a storage facility 31, such as underground. By storing the CO2 in the storage facility 31, the CO2 is fixed (it is not released into the atmosphere).

[0026] In the FT synthesis unit 23, SAF is produced using the synthesis gas as a raw material by the FT (Fischer-Tropsch) method.

[0027] In the distillation unit 25, the SAF produced in the FT synthesis unit 23 is purified by distillation. The SAF purified in the distillation unit 25 is sent to and stored in the SAF tank 27. As described above, the SAF stored in the SAF tank 27 is sent to the blending tank 6a of the refinery 6 and finally sent to the airport fuel tank 7a of the airport 7.

[0028] The synthetic fuel production plant 1 is equipped with a carbon intensity calculation device 40 that performs calculations related to a life cycle assessment (LCA) of CO2 emissions.

[0029] As shown in FIG. 3, the carbon intensity calculation device 40 includes, for example, a CPU (Central Processing Unit: processor) 41, a main memory 42, a secondary storage 43, an external interface 44, The system is also equipped with a communication interface 45. These components are interconnected directly or indirectly via a bus, and work together to execute various processes.

[0030] The carbon intensity calculation device 40 may further include an input device 46, an output device 47, etc. These input device 46 and output device 47 may be connected to a CPU or the like via a bus, or may be connected via an external interface 44 or a communication interface 45.

[0031] The CPU 41 controls the entire carbon intensity calculation device 40 using, for example, an OS (Operating System) stored in a secondary storage device 43 connected via a bus, and performs various processes by executing various programs stored in the secondary storage device 43. One or more CPUs 41 may be provided, and they may work together to realize processes.

[0032] The main memory device 42 is composed of writable memory such as cache memory, RAM (Random Access Memory), etc., and is used as a working area for reading out programs executed by the CPU 41 and writing data processed by the programs.

[0033] The secondary storage device 43 is a non-transitory computer-readable storage medium. Examples of the secondary storage device 43 include a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, and a semiconductor memory. Examples of the secondary storage device 43 include a read-only memory (ROM), a hard disk drive (HDD), and a solid-state drive (SSD) flash memory. The secondary storage device 43 stores, for example, an operating system (OS) for controlling the entire carbon intensity calculation device 40, such as Windows (registered trademark), iOS (registered trademark), or Android (registered trademark), a basic input / output system (BIOS), various device drivers for operating peripheral devices, various application software, and various data and files. The secondary storage device 43 also stores programs for implementing various processes and various data required for implementing the various processes. A plurality of secondary storage devices 43 may be provided, and the programs and data described above may be stored separately in each secondary storage device 43.

[0034] The external interface 44 is an interface for connecting to an external device. Examples of external devices include an external monitor, a USB memory, an external HDD, an external camera, etc. Although only one external interface 44 is shown in the example shown in FIG. 3, multiple external interfaces 44 may be provided.

[0035] The communication interface 45 functions as an interface for connecting to a network to communicate with other devices and transmitting and receiving information. For example, the communication interface 45 communicates with other devices via a wired or wireless connection. Examples of wireless communication include communication via lines such as Bluetooth (registered trademark), Wi-Fi, mobile communication systems (3G, 4G, 5G, 6G, LTE, etc.), and wireless LAN. An example of wired communication is communication via lines such as a wired LAN (Local Area Network).

[0036] Next, an example of the functions of the carbon intensity calculation device 40 will be described with reference to the drawing. Fig. 4 is a functional block diagram showing an example of the calculation function related to carbon intensity provided in the carbon intensity calculation device 40 according to this embodiment.

[0037] The CO2 emissions based on the life cycle assessment calculated by the carbon intensity calculation device 40 are calculated as the life cycle GHG (Greenhouse Gas) of the SAF by the following formula. LSf = Core LCA default value or calculated value (refers to GHG emissions from fuel production, etc., other than induced land use changes). + Default or calculated values ​​of induced land use change (ILUC) (refers to GHG emissions due to induced land use change).

[0038] The carbon intensity calculation device 40 includes a CO2 calculation unit 51 that calculates the CO2 emissions based on the life cycle assessment of the synthetic fuel production plant 1, an associated data creation unit 52 that obtains associated data that associates the produced SAF with the CO2 emissions obtained by the CO2 calculation unit 51, and an output unit 53 that outputs the associated data obtained by the associated data creation unit 52.

[0039] The CO2 calculation unit 51 receives, as input data, data for calculating carbon intensity, the amount of CO2 emissions stored and fixed in the storage facility 31, the amount of SAF produced in the FT synthesis facility 5, and the like.

[0040] The carbon intensity calculation data used in the "Core LCA default value or actual measurement value" in the above formula is, for example, the following CO2 emissions: (1) Manufacturing in the area where raw materials are grown (e.g., raw material cultivation) (2) Preparing for shipment at the raw material cultivation site (e.g. harvesting and collecting raw materials) (3) Raw material processing / extraction (4) Transportation of raw materials to processing plants and fuel manufacturing plants (5) The process of converting raw materials into fuel (6) Transportation and delivery to the fuel blending point

[0041] The CO2 emissions in (5) above are given by the biomass gasification facility 3 and the FT synthesis facility 5.

[0042] In this embodiment, CO2 is separated in the CO2 removal device 21, purified in the CO2 purification equipment 29, and immobilized in the storage facility 31, so the amount of immobilized CO2 emissions is calculated as a negative value.

[0043] The CO2 emission amount obtained by the CO2 calculation unit 51 is the weight in grams of CO2 emitted per megajoule of heat generated by the SAF (unit: [g-CO2 / MJ]), and is also called carbon intensity.

[0044] The related data creation unit 52 associates the manufactured SAF with the CO2 emissions calculated for the manufacture of the SAF to create related data, thereby enabling management of SAF linked to CO2 emissions.

[0045] The related data output from the output unit 53 is sent to the carbon intensity calculation device 6b of the refinery 6. The carbon intensity calculation device 6b of the refinery 6 calculates the carbon intensity of fuels such as a mixture of the SAF produced in the synthetic fuel production plant 1 and conventional jet fuel. The output calculated by the carbon intensity calculation device 6b of the refinery 6 is sent to users of the SAF, such as airlines at the airport.

[0046] A series of processes for realizing the various functions described above is stored in the form of a program in the secondary storage device 43, for example, and the CPU (processor) 41 reads this program into the main storage device 42 and executes information processing and arithmetic processing to realize the various functions. Note that the program may be pre-installed in the secondary storage device 43, provided in a state stored in a non-transitory computer-readable storage medium, or distributed via wired or wireless communication means. Examples of non-transitory computer-readable storage media include magnetic disks, magneto-optical disks, CD-ROMs, DVD-ROMs, and semiconductor memories.

[0047] The above-described embodiment has the following advantages. We conducted a life cycle assessment of the synthetic fuel production process in which biomass feedstock is gasified to produce SAF, calculated CO2 emissions, linked the calculated CO2 emissions to the produced SAF, and output this related data. This will enable SAF users to use SAF to contribute to reducing CO2 emissions, and will improve convenience in a wide range of areas, such as evaluating the effectiveness of SAF use and applying to government agencies.

[0048] The CO2 emissions calculated based on a life cycle assessment take into account the CO2 emissions from storing and fixing biomass-derived CO2, which allows for improved CO2 reduction compared to other types of synthetic fuel production plants.

[0049] The gasification reaction is an endothermic reaction and therefore requires a heat supply. However, the gasifier 11 of this embodiment performs the gasification reaction using the heat from the combustion of biomass feedstock without relying on external heat input, thereby enabling low CO2 emissions [g-CO2 / MJ] based on a life cycle assessment. On the other hand, while a certain amount of CO2 is inevitably generated by the combustion of biomass feedstock, this CO2 becomes an inert gas in the FT synthesis downstream of the gasifier 11 and is therefore separated and captured in the decarbonation device 21 of the FT synthesis equipment 5. Therefore, by taking advantage of the unique characteristics of the combination of the gasifier 11 and the FT synthesis equipment 5 and storing the separated and captured biomass-derived CO2 in the storage facility 31, CO2 emissions based on a life cycle assessment can be significantly improved compared to other types of SAF production methods.

[0050] Furthermore, we can provide SAF that can achieve carbon neutrality by complying with the blending ratio (50%) with conventional jet fuel permitted by ASTM (American Society for Testing and Materials).

[0051] In other words, the biomass-derived CO2 separated and recovered in the decarbonation device 21 is stored and fixed, which makes it possible to improve CO2 emissions based on LCA compared to other types of synthetic fuel production plants.

[0052] [Second embodiment] Next, a second embodiment of the present disclosure will be described with reference to FIGS. This embodiment differs from the synthetic fuel production plant 1 of the first embodiment shown in Figures 1 and 2 in the position of the carbon dioxide removal device 21. Since the other points are the same, the same reference numerals are used and the description thereof will be omitted.

[0053] As shown in Fig. 5, the decarbonation device 21 is provided upstream of the gas compressor 19. As a result, the decarbonation device 21 is installed in an atmospheric pressure system. As shown in Fig. 6, a gas purification facility 22 for purifying the compressed gas is provided between the gas compressor 19 and the FT synthesis device 23.

[0054] According to this embodiment, the decarbonation device 21 is installed in an atmospheric pressure system, so that it is possible to adopt a decarbonation device that uses a chemical absorption method with an amine absorption liquid, which cannot be adopted in a pressurized system, and the CO2 recovery rate can be improved.

[0055] [Third embodiment] Next, a third embodiment of the present disclosure will be described with reference to FIGS. 1 and 2 in that CO2 is introduced as backwash gas for the filter 13. Since other points are similar, the same reference numerals are used and their explanations are omitted.

[0056] As shown in Figures 7 and 8, CO2 recovered in the CO2 purification equipment 29 is guided to the filter 13 via a CO2 backwashing path 34 (path connected with symbol E). An on-off valve 34a is provided in the CO2 backwashing path 34. The on-off valve 34a is controlled by a control unit (not shown). The on-off valve 34a is open during backwashing and closed when backwashing is not performed.

[0057] This embodiment provides the following advantageous effects. In order to store the CO2, the CO2 recovered in the CO2 purification equipment 29 is pressurized. This pressurized CO2 is used to backwash the filter 13. This makes it possible to reduce the power required to send the CO2 to the filter. Furthermore, it is possible to reduce the use of nitrogen gas (see FIG. 1), which is generally used as backwash gas, and it is possible to reduce the capacity and power required for the nitrogen gas production equipment. Note that in the second embodiment, as in the present embodiment, the recovered CO2 is pressurized for storage, and this pressurized CO2 can be used to backwash the filter 13.

[0058] [Fourth embodiment] Next, a fourth embodiment of the present disclosure will be described with reference to FIG. This embodiment differs from the synthetic fuel production plant 1 of the first embodiment shown in Figures 1 and 2 in that it is equipped with a hydrogen supply facility 35 and an oxygen supply facility 38. Since other features are similar, the same reference numerals are used and their explanations are omitted. In addition, the configuration of the FT synthesis facility 5 side is the same as in Figure 2, so the drawing of that figure is omitted.

[0059] 9, the hydrogen supply equipment 35 supplies hydrogen to the product gas purified in the gas purification equipment 15 via a first hydrogen supply path 36. A flow rate adjustment valve 36a is provided in the first hydrogen supply path 36, and the opening degree of the valve is controlled by a control unit (not shown). The hydrogen supply equipment 35 also supplies hydrogen into the gasification furnace 11 via a second hydrogen supply path 37. A flow rate adjustment valve 37a is provided in the second hydrogen supply path 37, and the opening degree of the valve is controlled by a control unit (not shown).

[0060] The oxygen supply equipment 38 supplies oxygen into the gasification furnace 11 via an oxygen supply line 39. A flow rate adjustment valve 39a is provided in the oxygen supply line 39, and the opening degree of the valve 39a is controlled by a control unit (not shown).

[0061] This embodiment provides the following advantageous effects. The amount of steam supplied to the gasifier 11 is adjusted to adjust the H2 / CO ratio in the generated gas (to obtain hydrogen using the water-gas shift reaction). Increasing the amount of steam supplied to the gasifier 11 reduces the cold gas efficiency in the gasifier 11. A decrease in cold gas efficiency increases the CO2 / CO ratio in the generated gas (increasing CO2), resulting in a decrease in the production volume of the synthetic fuel production plant 1. Therefore, by supplying hydrogen to the gasifier 11 and / or the generated gas, the H2 / CO ratio in the generated gas can be shifted toward a higher value. This reduces the amount of steam supplied to the gasifier 11 and reduces CO2 emissions, improving cold gas efficiency and enabling the effective use of increased surplus steam, ultimately contributing to an increase in the production volume of the synthetic fuel production plant 1. Furthermore, the amount of oxygen gas consumed by the gasifier 11 is reduced, allowing for a reduction in the capacity and power required for the oxygen supply facility 38.

[0062] In this embodiment, both the first hydrogen supply path 36 and the second hydrogen supply path 37 are used, but one of the first hydrogen supply path 36 and the second hydrogen supply path 37 may be omitted.

[0063] This embodiment can be modified as shown in Fig. 10. Specifically, the steam input pipe 17 shown in Fig. 1 is omitted so that steam is not input into the gasification furnace 11.

[0064] Since hydrogen is supplied to the gasifier 11 and / or the generated gas, when it becomes unnecessary to adjust the H2 / CO ratio by the water-gas shift reaction in the gasifier 11, there is no need to supply steam to the gasifier 11. This simplifies the device and reduces costs.

[0065] 11, a water electrolysis system 60 that produces hydrogen and oxygen may be provided instead of the hydrogen supply system 35 and the oxygen supply system 38 shown in FIGS. 9 and 10. If a water electrolysis system using renewable energy is used, hydrogen and oxygen can be supplied without increasing CO2 emissions based on a life cycle assessment.

[0066] The carbon intensity calculation device, the synthetic fuel production plant using the same, the carbon intensity calculation method, and the carbon intensity calculation program described in each of the above-described embodiments can be understood, for example, as follows.

[0067] A carbon intensity calculation device (40) according to a first aspect of the present disclosure includes a CO2 calculation unit (51) that calculates CO2 emissions based on a life cycle assessment of a synthetic fuel production process in which biomass raw material is gasified and synthetic fuel is produced from the gasified product gas, an associated data creation unit (52) that obtains associated data that associates the produced synthetic fuel with the CO2 emissions obtained by the CO2 calculation unit (51), and an output unit (53) that outputs the associated data obtained by the associated data creation unit.

[0068] A life cycle assessment (LCA) is performed on the synthetic fuel production process, in which biomass raw materials are gasified to produce synthetic fuel, and CO2 emissions are calculated. The calculated CO2 emissions are associated with the synthetic fuel produced, and this related data is output. This allows users of synthetic fuel to use fuel in a way that contributes to reducing CO2 emissions, and improves convenience in a wide range of areas, such as evaluating the effectiveness of using synthetic fuel and applying for CO2 reductions to government agencies.

[0069] In the carbon intensity calculation device (40) according to the second aspect of the present disclosure, in the first aspect, the CO2 calculation unit (51) performs calculation based on the amount of biomass raw material, the amount of CO2 emissions resulting from storing and immobilizing CO2 generated by gasification of the biomass raw material, and the amount of synthetic fuel produced.

[0070] The CO2 emissions calculated based on a life cycle assessment take into account the CO2 emissions from storing and fixing biomass-derived CO2, which allows for improved CO2 reduction compared to other types of synthetic fuel production plants.

[0071] A synthetic fuel production plant (1) according to a first aspect of the present disclosure includes the carbon intensity calculation device (40), a gasification furnace (11) that gasifies a biomass feedstock, a decarbonation device (21) that separates CO2 from a produced gas discharged from the gasification furnace (11), and a synthetic fuel production device (23) that obtains a synthetic fuel from the produced gas containing CO and H2 from which CO2 has been separated in the decarbonation device (21), and the CO2 separated and recovered in the decarbonation device (21) is stored and immobilized.

[0072] The CO2 derived from biomass separated and recovered in the decarbonation equipment is stored and fixed, which allows for greater CO2 reduction than other types of synthetic fuel production plants.

[0073] The synthetic fuel production plant (1) according to a second aspect of the present disclosure includes a compressor (19) that compresses the generated gas discharged from the gasification furnace (11) in the first aspect, and the decarbonation device (21) is provided upstream of the compressor (19).

[0074] The decarbonation equipment is installed before the compressor pressurizes the produced gas. This means that the decarbonation equipment is installed in the atmospheric pressure system, and for example, a chemical absorption decarbonation equipment using an amine absorbent can be used, improving the CO2 capture rate.

[0075] The synthetic fuel production plant (1) according to a third aspect of the present disclosure is the first aspect, and includes a compressor (19) that compresses the generated gas discharged from the gasification furnace (11), and the decarbonation device (21) is provided downstream of the compressor (19).

[0076] The decarbonation device is installed after the generated gas is pressurized by the compressor. This means that the decarbonation device is installed in the pressurization system, making it possible to effectively utilize the pressurization energy of the CO2 after it has been pressurized.

[0077] The synthetic fuel production plant (1) according to a fourth aspect of the present disclosure is the third aspect, and includes a filter (13) that filters the generated gas discharged from the gasification furnace (11), and CO2 separated in the decarbonation device (21) is used to backwash the filter (13).

[0078] In order to store the CO2, the CO2 separated in the decarbonation device is pressurized. This pressurized CO2 is used to backwash the filter. This reduces the power required to send the CO2 to the filter. It also reduces the use of nitrogen gas, which is generally used as backwash gas, making it possible to reduce the capacity and power required for the nitrogen gas production equipment. The filter is used to separate ash and char contained in the produced gas, and a porous filter, for example, can be used.

[0079] A synthetic fuel production plant (1) according to a fifth aspect of the present disclosure is in any one of the first to fourth aspects, and includes a hydrogen production facility (35) that produces hydrogen, and supplies hydrogen produced in the hydrogen production facility (35) to the gasification furnace (11) and / or the generated gas discharged from the gasification furnace (11).

[0080] Steam is supplied to the gasifier to obtain hydrogen using the water-gas shift reaction. Adding steam to the gasifier reduces cold gas efficiency. A decrease in cold gas efficiency increases the CO2 / CO ratio in the generated gas, increasing the amount of inert CO2, and ultimately reducing the production volume of the synthetic fuel production system. Therefore, by supplying hydrogen to the gasifier and / or the generated gas, the H2 / CO ratio in the generated gas can be shifted toward a higher level. This reduces the amount of steam supplied to the gasifier and reduces CO2 emissions, improving cold gas efficiency and enabling the effective use of increased surplus steam, ultimately contributing to an increase in the production volume of the synthetic fuel production system. Furthermore, oxygen gas consumption in the gasifier is reduced, allowing for a reduction in the capacity and power required for the oxygen gas production equipment.

[0081] A synthetic fuel production plant (1) according to a sixth aspect of the present disclosure is the synthetic fuel production plant (1) of the fifth aspect, wherein the hydrogen production facility is a water electrolysis system (60).

[0082] A water electrolysis device can be used as the hydrogen production facility. If hydrogen is produced by a water electrolysis device using renewable energy, hydrogen can be supplied without increasing CO2 emissions based on life cycle assessment.

[0083] A synthetic fuel production plant (1) according to a seventh aspect of the present disclosure is the sixth aspect, and supplies oxygen obtained in the water electrolysis device (60) to the gasification furnace (11).

[0084] The water electrolysis device produces oxygen as well as hydrogen, so that the oxygen supplied to the gasification furnace can be supplied from the water electrolysis device.

[0085] According to an eighth aspect of the present disclosure, in the synthetic fuel production plant (1) of any one of the fifth to seventh aspects, the gasification furnace (11) is not provided with a steam supply path for supplying steam.

[0086] If hydrogen production by the water-gas shift reaction becomes unnecessary by supplying hydrogen to the gasifier and / or the generated gas, there is no need to supply steam to the gasifier, which simplifies the system and reduces costs.

[0087] The carbon intensity calculation method according to the first aspect of the present disclosure includes a CO2 calculation step of calculating CO2 emissions based on a life cycle assessment of a synthetic fuel production process in which biomass feedstock is gasified and synthetic fuel is produced from the gasified product gas; an associated data creation step of obtaining associated data that associates the produced synthetic fuel with the CO2 emissions obtained by the CO2 calculation unit; and an output step of outputting the associated data obtained by the associated data creation unit.

[0088] A carbon intensity calculation program according to the first aspect of the present disclosure causes a computer to function as the carbon intensity calculation device of the first or second aspect. [Explanation of symbols]

[0089] 1. Synthetic fuel production plant 3. Biomass gasification facility 5 FT synthesis equipment (liquid fuel production equipment) 6. Refinery 6a Mixing Tank 7 airports 7a Airport fuel tank 11 Gasifier 12 High-temperature SGC (produced gas cooler) 12a Heat transfer tube (steam flow path) 13 Filters 14 Low temperature SGC 14a Heat transfer tube 15 Gas purification facilities 17 Steam injection pipe 19 Gas Compressor 21 Decarboxylation equipment 22 Gas purification facility 23 FT synthesis equipment (synthetic fuel production equipment) 25 Distillation apparatus 27 SAF Tank 29 CO2 purification equipment 31 Storage facility 34 CO2 backwash route 34a On-off valve 35 Hydrogen supply equipment 36 First Hydrogen Supply Route 36a Flow control valve 37 Second hydrogen supply route 37a Flow control valve 38 Oxygen supply equipment 39 Oxygen supply pathway 39a Flow control valve 40 Carbon intensity calculation device 41 CPU 42 Main storage 43 Secondary storage device 44 External Interface 45 Communication Interface 46 Input Devices 47 Output Devices 51 CO2 calculation section 52 Related Data Creation Department 53 Output section 60 Water electrolysis equipment

Claims

1. a CO2 calculation unit that calculates CO2 emissions based on a life cycle assessment of a synthetic fuel production process in which biomass raw materials are gasified and synthetic fuel is produced from the gasified product gas; an associated data creation unit that obtains associated data that associates the produced synthetic fuel with the CO2 emissions obtained by the CO2 calculation unit; an output unit that outputs the associated data obtained by the associated data creation unit; A carbon intensity calculation device comprising:

2. 2. The carbon intensity calculation device according to claim 1, wherein the CO2 calculation unit performs calculations based on the amount of biomass raw material, the amount of CO2 emitted by storing and immobilizing CO2 generated by gasification of the biomass raw material, and the amount of synthetic fuel produced.

3. The carbon intensity calculation device according to claim 1 or 2; a gasification furnace for gasifying biomass feedstock; a decarbonation device that separates CO2 from the generated gas discharged from the gasification furnace; a synthetic fuel production device for obtaining a synthetic fuel from a raw material gas containing CO and H from which CO has been separated in the decarbonation device; Equipped with The CO2 separated and recovered by the decarbonation device is stored and fixed in this synthetic fuel production plant.

4. a compressor that compresses the generated gas discharged from the gasification furnace, 4. The synthetic fuel production plant according to claim 3, wherein the carbon dioxide removal device is provided upstream of the compressor.

5. a compressor that compresses the generated gas discharged from the gasification furnace, 4. The synthetic fuel production plant according to claim 3, wherein the carbon dioxide removal device is provided downstream of the compressor.

6. a filter for filtering the generated gas discharged from the gasification furnace; 4. The synthetic fuel production plant according to claim 3, wherein the CO2 separated in the decarbonation device is used for backwashing the filter.

7. Equipped with hydrogen production facilities to produce hydrogen, 4. The synthetic fuel production plant according to claim 3, wherein hydrogen produced in the hydrogen production facility is supplied to the gasification furnace and / or the generated gas discharged from the gasification furnace.

8. 8. The synthetic fuel production plant according to claim 7, wherein the hydrogen production facility is a water electrolysis device.

9. 9. The synthetic fuel production plant according to claim 8, wherein oxygen obtained in the water electrolysis device is supplied to the gasification furnace.

10. 8. The synthetic fuel production plant according to claim 7, wherein the gasification furnace is not provided with a steam supply passage for supplying steam.

11. a CO2 calculation step of calculating CO2 emissions based on a life cycle assessment of a synthetic fuel production process in which biomass raw materials are gasified and synthetic fuel is produced from the gasified product gas; an associated data creation step of obtaining associated data that associates the produced synthetic fuel with the CO2 emissions obtained in the CO2 calculation step; an output step of outputting the associated data obtained in the associated data creation step; A carbon intensity calculation method having the following.

12. A carbon intensity calculation program for causing a computer to function as the carbon intensity calculation device according to claim 1.

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