Carbon dioxide capture equipment and carbon dioxide capture method

Abstract

To improve the economic viability of capturing carbon dioxide from the atmosphere. [Solution] The carbon dioxide recovery system comprises a gas turbine, a carbon dioxide recovery device capable of recovering carbon dioxide from the atmosphere, and a heat transfer medium line capable of guiding the heat transfer medium generated by the operation of the gas turbine to the carbon dioxide recovery device. The carbon dioxide recovery device has an adsorbent capable of adsorbing carbon dioxide from the atmosphere and releasing the adsorbed carbon dioxide by heating with the heat transfer medium.

Description

Technical Field

[0001] The present disclosure relates to carbon dioxide recovery equipment and a method for recovering carbon dioxide.

Background Art

[0002] In recent years, technologies for recovering carbon dioxide in the atmosphere have been studied for measures against global warming and the like. This technology is called DAC (Direct Air Capture).

[0003] The following Patent Document 1 describes an apparatus for recovering carbon dioxide in the atmosphere. This apparatus includes an adsorbent capable of adsorbing carbon dioxide, a casing covering the adsorbent, and a fan for guiding air into the casing.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the technology described in Patent Document 1 above, driving power for a fan for guiding air to the adsorbent and a heat source for detaching carbon dioxide adsorbed on the adsorbent from the adsorbent are required. Further, since the proportion of carbon dioxide in the atmosphere is about 0.02 to 0.04%, it is also necessary to install a large number of fans for guiding air to the adsorbent or increase the size of this fan.

[0006] Therefore, an object of the present disclosure is to provide a technology that is excellent in economic efficiency and recovers carbon dioxide from the atmosphere.

Means for Solving the Problems

[0007] As one aspect for achieving the above object, a carbon dioxide recovery facility The gas turbine comprises a compressor capable of compressing air, a combustor capable of burning fuel in the compressed air compressed by the compressor to produce combustion gas, and a turbine driven by the combustion gas; a carbon dioxide recovery device capable of recovering carbon dioxide from the atmosphere; and a heat transfer medium line capable of guiding the heat transfer medium generated by the operation of the gas turbine to the carbon dioxide recovery device. The carbon dioxide recovery device has an adsorbent capable of adsorbing carbon dioxide from the atmosphere and releasing the adsorbed carbon dioxide by heating with the heat transfer medium.

[0008] In this embodiment, a heat transfer medium generated by driving a gas turbine is used as the heat transfer medium to heat the adsorbent in order to release carbon dioxide from the adsorbent. Therefore, in this embodiment, the heat source necessary to carry out the process of releasing carbon dioxide from the adsorbent can be obtained.

[0009] Other embodiments of carbon dioxide capture equipment for achieving the aforementioned objectives include: The gas turbine comprises a compressor capable of compressing air, a combustor capable of burning fuel in the compressed air compressed by the compressor to produce combustion gas, and a turbine driven by the combustion gas; a carbon dioxide recovery device having an electrically driven device capable of recovering carbon dioxide from the atmosphere; an extraction line through which the compressed air extracted from the gas turbine can flow; an auxiliary turbine connected to the extraction line and driven by the compressed air flowing through the extraction line; an auxiliary generator connected to the auxiliary turbine and capable of generating electricity by driving the auxiliary turbine; and a power line electrically connecting the auxiliary generator and the device.

[0010] In this embodiment, the output of the gas turbine can be reduced by extracting compressed air from it. Furthermore, in this embodiment, in order to reduce the output of the gas turbine, compressed air is extracted from the gas turbine and used to drive an auxiliary turbine, which in turn generates electricity with an auxiliary generator. In this embodiment, the electricity generated by this auxiliary generator is used to drive the equipment of the carbon dioxide capture device. Therefore, in this embodiment, power can be obtained to drive the equipment of the carbon dioxide capture device.

[0011] In a method for capturing carbon dioxide as one embodiment for achieving the above objective, A carbon dioxide recovery device having an adsorbent capable of adsorbing carbon dioxide performs a recovery step of recovering carbon dioxide from the atmosphere and a detachment step of introducing a heat transfer medium into the carbon dioxide recovery device and detaching the carbon dioxide adsorbed on the adsorbent from the adsorbent. The heat transfer medium is generated by driving a gas turbine having a compressor capable of compressing air, a combustor capable of generating combustion gas by burning fuel in the compressed air compressed by the compressor, and a turbine driven by the combustion gas.

[0012] In this embodiment, similar to the carbon dioxide capture equipment in the previous embodiment, a heat source necessary for carrying out the process of releasing carbon dioxide from the adsorbent can be obtained.

[0013] In another embodiment of a carbon dioxide capture method for achieving the aforementioned objective, A carbon dioxide recovery device having electrically driven equipment performs the following steps: a recovery step of recovering carbon dioxide from the atmosphere by adsorbing it onto an adsorbent; a detachment step of introducing a heat transfer medium into the carbon dioxide recovery device and detaching the carbon dioxide adsorbed onto the adsorbent from the adsorbent; and a power generation step of extracting compressed air from a gas turbine having a compressor capable of compressing air, a combustor capable of burning fuel in the compressed air compressed by the compressor to produce combustion gas, and a turbine driven by the combustion gas, and using the compressed air to drive an auxiliary turbine, thereby generating electricity with an auxiliary generator. In the recovery step or the detachment step, the equipment is driven by the electricity generated in the power generation step.

[0014] In this embodiment, as with the carbon dioxide capture equipment in the other embodiments described above, the output of the gas turbine can be reduced. Furthermore, in this embodiment, as with the carbon dioxide capture equipment in the other embodiments described above, power can be obtained to drive the equipment of the carbon dioxide capture device. [Effects of the Invention]

[0015] In one aspect of the present disclosure, it is possible to provide a technology that is excellent in economy and recovers carbon dioxide from the atmosphere.

Brief Description of the Drawings

[0016] [Figure 1] It is a system diagram of a carbon dioxide recovery facility in the first embodiment according to the present disclosure. [Figure 2] It is a flowchart showing the operation of a carbon dioxide recovery device in the first embodiment according to the present disclosure. [Figure 3] It is a system diagram of a carbon dioxide recovery facility in the second embodiment according to the present disclosure. [Figure 4] It is a system diagram of a carbon dioxide recovery facility in the third embodiment according to the present disclosure. [Figure 5] It is a system diagram of a carbon dioxide recovery facility in the fourth embodiment according to the present disclosure.

Modes for Carrying Out the Invention

[0017] Hereinafter, various embodiments and modifications of the carbon dioxide recovery facility according to the present disclosure will be described with reference to the drawings.

[0018] 「First Embodiment of Carbon Dioxide Recovery Facility」 Hereinafter, the first embodiment of the carbon dioxide recovery facility according to the present disclosure will be described with reference to FIGS. 1 and 2.

[0019] As shown in FIG. 1, the carbon dioxide recovery facility in the present embodiment includes a gas turbine 1, an exhaust heat utilization facility 20 that can utilize the heat of the exhaust gas exhausted from the gas turbine 1, a gas turbine generator 6 that can generate electricity by driving the gas turbine 1, an extraction facility 30 that can extract a part of the air in the gas turbine 1 to the outside, an auxiliary power generation facility 40, a power grid facility 50, a carbon dioxide recovery device 60, a heat medium line 70, and a control device 100.

[0020] The gas turbine 1 includes a compressor 10 capable of compressing air A, a combustor 15 capable of generating combustion gas by burning fuel F in the compressed air, which is the air compressed by the compressor 10, a fuel valve 5, and a turbine 16 capable of being driven by the high-temperature and high-pressure combustion gas, and an intermediate casing 3.

[0021] The compressor 10 has a compressor rotor 11 that rotates about a rotor axis Ar, a compressor casing 12 that covers the compressor rotor 11, and an intake air amount adjuster 13. Here, the direction in which the rotor axis Ar extends is defined as the axial direction Da. Of both sides in the axial direction Da, one side is the axial upstream side Dau, and the other side is the axial downstream side Dad.

[0022] The compressor rotor 11 has a compressor rotor shaft 11s that extends in the axial direction Da about the rotor axis Ar, and a plurality of moving blade rows 11b fixed to the compressor rotor shaft 11s. The plurality of moving blade rows 11b are arranged in the axial direction Da. Each of the plurality of moving blade rows 11b has a plurality of moving blades arranged in the circumferential direction with respect to the rotor axis Ar. The intake air amount adjuster 13 has a plurality of inlet guide vanes (referred to as IGV (Inlet Guide Vane)) 13v disposed within the compressor casing 12 on the axial upstream side Dau with respect to the plurality of moving blade rows 11b, and a drive mechanism 13d capable of changing the orientation of each inlet guide vane 13v.

[0023] The turbine 16 is disposed on the axial downstream side Dad of the compressor 10. The turbine 16 has a turbine rotor 17 that rotates about the rotor axis Ar by the combustion gas from the combustor 15, and a turbine casing 18 that covers the turbine rotor 17.

[0024] The turbine rotor 17 has a turbine rotor shaft 17s that extends in the axial direction Da about the rotor axis Ar, and a plurality of moving blade rows 17b fixed to the turbine rotor shaft 17s. The plurality of moving blade rows 17b are arranged in the axial direction Da. Each of the plurality of moving blade rows 17b has a plurality of moving blades arranged in the circumferential direction with respect to the rotor axis Ar.

[0025] The turbine rotor 17 and the compressor rotor 11 are interconnected so as to be able to rotate together around the same rotor axis Ar, forming a gas turbine rotor 2. The rotor of the gas turbine generator 6 is connected to this gas turbine rotor 2.

[0026] The intermediate casing 3 is positioned in the axial direction Da between the compressor casing 12 and the turbine casing 18, connecting the compressor casing 12 and the turbine casing 18. Compressed air discharged from the compressor 10 flows into the intermediate casing 3. The combustor 15 is fixed to the intermediate casing 3. A fuel line 4 is connected to the combustor 15. The fuel line 4 is equipped with the aforementioned fuel valve 5, which adjusts the flow rate of the fuel F flowing through the fuel line 4.

[0027] The waste heat utilization equipment 20 includes a waste heat recovery boiler 21, an exhaust duct 22, a chimney 23, a steam turbine 24 that can be driven by steam from the waste heat recovery boiler 21, a main steam line 25 that can guide steam generated in the waste heat recovery boiler 21 to the steam turbine 24, a condenser 26 that returns the steam exhausted from the steam turbine 24 back into water, a feedwater line 27 that can guide the water in the condenser 26 to the waste heat recovery boiler 21, and a feedwater pump 28 provided in the feedwater line 27. The rotor of the steam turbine 24 is connected to a drive object that can be rotated by the rotation of the rotor. Examples of such drive objects include the rotor of a gas turbine generator 6, the rotor of an ST generator independent of the gas turbine generator 6, and the impeller of a pump.

[0028] The waste heat recovery boiler 21 generates steam by evaporating water using the heat from the exhaust gas, which is the combustion gas exhausted from the turbine 16. This waste heat recovery boiler 21 has a boiler casing 21c connected to the turbine casing 18 and heat transfer tubes 21t arranged inside the boiler casing 21c. The exhaust gas from the turbine 16 flows through the boiler casing 21c. Liquid or gaseous water flows through the heat transfer tubes 21t. One end of the heat transfer tubes 21t forms a water inlet and is connected to the feedwater line 27. The other end of the heat transfer tubes 21t forms a steam outlet and is connected to the main steam line 25. The chimney 23 is connected to the boiler casing 21c of the waste heat recovery boiler 21 via an exhaust duct 22.

[0029] The extraction equipment 30 includes an extraction line 31 that allows extraction of a portion of the compressed air generated by the compressor 10 as extracted air from the gas turbine 1, an extraction valve 32, and an auxiliary turbine 33 that can be driven by the extracted air flowing through the extraction line 31.

[0030] The auxiliary turbine 33 includes a rotatable auxiliary turbine rotor 34 and an auxiliary turbine casing 35 that covers the auxiliary turbine rotor 34. One end of the extraction line 31 is connected to the intermediate casing 3 of the gas turbine 1. The other end of the extraction line 31 is connected to the auxiliary turbine casing 35. Therefore, a portion of the compressed air that flows into the intermediate casing 3 can flow into the auxiliary turbine casing 35 as extracted air via the extraction line 31. The auxiliary turbine rotor 34 rotates due to the extracted air that flows into the auxiliary turbine casing 35. An extraction valve 32 is provided in the extraction line 31. This extraction valve 32 can adjust the flow rate of extracted air flowing through the extraction line 31.

[0031] The auxiliary power generation equipment 40 includes a transmission 42, a clutch 43, an auxiliary generator 41, and an energy storage device 45.

[0032] The transmission 42 functions as a reducer that reduces the rotation of the auxiliary turbine rotor 34. The clutch 43 can switch between a disengaged state, where the driving force from the transmission 42 is not transmitted to the rotor of the auxiliary generator 41, and an engaged state, where the driving force from the transmission 42 is transmitted to the rotor of the auxiliary generator 41.

[0033] In this embodiment, both the auxiliary generator 41 and the gas turbine generator 6 are synchronous generators.

[0034] The energy storage device 45 includes a battery 46 and an AC / DC converter 47. The AC / DC converter 47 can convert AC power from an external source into DC power and send it to the battery 46, and can also convert DC power from the battery 46 into AC power and send it to the outside.

[0035] The carbon dioxide recovery device 60 is a device for recovering carbon dioxide (CO2) from the atmosphere A. This carbon dioxide recovery device 60 includes a duct 61 through which the atmosphere A can flow, an adsorbent 62 capable of adsorbing carbon dioxide (CO2) from the atmosphere A, an inlet fan 63f, an outlet fan 64f, an inlet damper 66i, an outlet damper 66o, a suction line 67, a suction valve 68, a drain tank 69, and a vacuum pump 65p.

[0036] The duct 61 has an inlet 61i into which atmospheric air A can be introduced, and an outlet 61o into which atmospheric air A can be discharged. The adsorbent 62 is placed inside this duct 61. The adsorbent 62 is formed, for example, of an amine-supported porous material. Therefore, the carbon dioxide recovery device 60 in this embodiment is an S-DAC (Direct Air Capture) type carbon dioxide recovery device 60 that uses a solid adsorbent 62. The adsorbent 62 in this embodiment can release adsorbed carbon dioxide CO2 in a temperature environment of 100°C or less. The inlet fan 63f and the outlet fan 64f are both fans that can guide atmospheric air A into the duct 61 and discharge it outside the duct 61. The inlet fan 63f is located inside the duct 61 and is provided on the inlet 61i side of the duct 61 with respect to the adsorbent 62. The outlet fan 64f is located inside the duct 61 and is provided on the outlet 61o side of the duct 61 with respect to the adsorbent 62. The inlet damper 66i and the outlet damper 66o are both dampers capable of stopping the flow of atmospheric air A within the duct 61. The inlet damper 66i is located within the duct 61, between the adsorbent material 62 and the inlet fan 63f. The outlet damper 66o is located within the duct 61, between the adsorbent material 62 and the outlet fan 64f.

[0037] The suction line 67 is connected to the duct 61 so that it can draw in gas from the duct 61. The suction valve 68, drain tank 69, and vacuum pump 65p are all located in this suction line 67. The drain tank 69 is located in the suction line 67 on the duct 61 side of the vacuum pump 65p. The suction valve 68 is located in the suction line 67 on the duct 61 side of the drain tank 69.

[0038] The inlet fan 63f, outlet fan 64f, and vacuum pump 65p are all driven by electric motors 63m, 64m, and 65m, respectively. The inlet fan 63f and the electric motor 63m that drives the inlet fan 63f constitute equipment 63. The outlet fan 64f and the electric motor 64m that drives the outlet fan 64f constitute equipment 64. The vacuum pump 65p and the electric motor 65m that drives the vacuum pump 65p constitute equipment 65.

[0039] The heat transfer medium line 70 is a line capable of guiding the heat transfer medium generated by the operation of the gas turbine 1 to the carbon dioxide recovery device 60. Specifically, in this embodiment, the heat transfer medium line 70 is capable of guiding a portion of the exhaust gas discharged from the gas turbine 1, which has passed through the waste heat recovery boiler 21, to the carbon dioxide recovery device 60 as a heat transfer medium. One end of this heat transfer medium line 70 is connected to the exhaust duct 22, and the other end of this heat transfer medium line 70 is connected to the duct 61 of the carbon dioxide recovery device 60. The heat transfer medium line 70 is provided with a heat transfer medium valve 71 that can adjust the flow rate of the exhaust gas flowing through the heat transfer medium line 70.

[0040] The power system equipment 50 includes a dedicated power line 51g for the GT generator, a dedicated power line 51a for the AT generator, a dedicated power line 51b for the BESS, a shared power line 51s within the plant, a dedicated power line 51f for the fan, a dedicated power line 51p for the pump, an external connection power line 51c, a plurality of transformers 53a, 53b, 53c, 53g, and a plurality of switches 54a, 54b, 54c, 54g, 54f, 54p. The dedicated power line 51g for the GT generator has one end electrically connected to the gas turbine generator 6 and the other end electrically connected to the shared power line 51s within the plant. The dedicated power line 51a for the AT generator has one end electrically connected to the auxiliary generator 41 and the other end electrically connected to the shared power line 51s within the plant. The dedicated power line 51b for the BESS has one end electrically connected to the energy storage device 45 and the other end connected to the shared power line 51s within the plant. The fan-dedicated power line 51f has one end electrically connected to the electric motor 63m of the inlet fan 63f and the electric motor 64m of the outlet fan 64f, and the other end is connected to the plant's shared power line 51s. The pump-dedicated power line 51p has one end electrically connected to the electric motor 65m of the vacuum pump 65p, and the other end is connected to the plant's shared power line 51s. The external connection power line 51c electrically connects the plant's shared power line 51s to the external power system 59. The external connection power line 51c, the plant's shared power line 51s, and the fan-dedicated power line 51f together constitute a power line that electrically connects the external power system 59 to the electric motor 63m of the inlet fan 63f and the electric motor 64m of the outlet fan 64f. Furthermore, the external power line 51c, the shared power line 51s within the plant, and the dedicated power line 51p for the pump constitute a power line that electrically connects the external power system 59 and the electric motor 65m of the vacuum pump 65p.

[0041] The power line 51g dedicated to the GT generator is equipped with a transformer 53g and a switch 54g. Furthermore, an output meter 55 that detects the amount of power generated by the gas turbine generator 6, in other words, the actual output PWr which is the actual output of the gas turbine 1, is connected to this power line 51g dedicated to the GT generator. The power line 51a dedicated to the AT generator is equipped with a transformer 53a and a switch 54a. The power line 51b dedicated to the BESS is equipped with a transformer 53b and a switch 54b. The external connection power line 51c is also equipped with a transformer 53c and a switch 54c. The power line 51f dedicated to the fan is equipped with a switch 54f. The power line 51p dedicated to the pump is equipped with a switch 54p. All of the above switches 54a, 54b, 54c, 54g, 54f, and 54p have a first terminal, a second terminal, and a switching mechanism. The switching mechanism can change the connection state between the first and second terminals, from an ON state where the first and second terminals are electrically connected to an OFF state where the first and second terminals are not electrically connected. For example, the switch 54b installed on the BESS dedicated power line 51b can achieve an ON state where the external power system 59, the auxiliary generator 41, and the storage battery 46 are electrically connected, and an OFF state where the external power system 59, the auxiliary generator 41, and the storage battery 46 are not electrically connected.

[0042] The control device 100 includes a main controller 101, a GT (gas turbine) controller 102, an extraction controller 104, a switchgear controller 105, and a DAC controller 106.

[0043] The main controller 101 receives various plant-related instructions from the outside, including the requested output PWc required for the gas turbine 1, as well as the actual output PWr detected by the output meter 55, and controls the other controllers.

[0044] The GT controller 102 determines the opening degree of the fuel valve 5 based on the aforementioned request output PWc. The GT controller 102 then instructs the fuel valve 5 to this opening degree. The GT controller 102 also receives the actual output PWr from the main controller 101 and determines the IGV opening degree θ according to this actual output PWr. The GT controller 102 then instructs the intake air volume regulator 13 to this IGV opening degree θ.

[0045] The extraction controller 104 receives the actual output PWr from the main controller 101 and instructs the extraction valve 32 to open or close depending on whether the actual output PWr satisfies the extraction condition. Here, the extraction condition is that the actual output PWr detected by the output meter 55 is less than or equal to a predetermined extraction output.

[0046] The switchgear controller 105 controls each of the switches 54a, 54b, 54c, 54g, 54f, and 54p. When an unfavorable emergency occurs for the plant, the switchgear controller 105 instructs the switches 54a, 54b, 54c, 54g, 54f, and 54p corresponding to the emergency to turn off. Furthermore, the switchgear controller 105 instructs the switch 54b, which is installed on the BESS dedicated power line 51b, to turn on or off depending on whether the extraction valve 32 is open or closed, and also depending on the discharge conditions described later. The switchgear controller 105 instructs the switch 54b to turn on when the discharge conditions are met and the extraction valve 32 is open. Also, the switchgear controller 105 instructs the switch 54b to turn off when the discharge conditions are not met and the extraction valve 32 is not open.

[0047] The DAC controller 106 controls the carbon dioxide recovery device 60. Specifically, the DAC controller 106 controls the opening degree of the heat transfer valve 71, the opening degree of the inlet damper 66i, and the opening degree of the outlet damper 66o. Furthermore, the DAC controller 106 controls the driving of the inlet fan 63f, the driving of the outlet fan 64f, and the driving of the vacuum pump 65p via the switch controller 105.

[0048] Next, the operation of the gas turbine 1, the extraction equipment 30, and the auxiliary power generation equipment 40 will be explained.

[0049] First, the main controller 101 determines whether or not to perform main power generation, which involves driving the gas turbine 1 to generate electricity with the gas turbine generator 6. If the main controller 101 determines that it will perform main power generation, it instructs the GT controller 102 to perform fuel flow rate control and also to perform intake air flow rate control for the gas turbine 1.

[0050] The GT controller 102 determines the opening degree of the fuel valve 5 based on the external request output PWc and instructs the fuel valve 5 to this opening degree. The GT controller 102 also receives the actual output PWr from the main controller 101 and determines the IGV opening degree θ according to this actual output PWr. The GT controller 102 then instructs the intake air volume regulator 13 to use this IGV opening degree θ.

[0051] By controlling the fuel flow rate and intake air flow rate as described above, the gas turbine 1 is driven and the gas turbine generator 6 generates electricity.

[0052] If the requested output PWc from an external source is less than or equal to the rated output and greater than the aforementioned extraction output, the extraction valve 32 is closed, the clutch 43 is disengaged, and the switch 54b on the BESS-dedicated power line 51b is in the off state. In this case, the gas turbine generator 6 outputs power corresponding to the requested output PWc. Also, because the extraction valve 32 is closed, compressed air in the intermediate casing 3 is not supplied to the auxiliary turbine 33 via the extraction line 31, and the auxiliary turbine 33 is not driven. Furthermore, because the switch 54b on the BESS-dedicated power line 51b is in the off state, no power is input or output to the energy storage device 45. In other words, the energy storage device 45 is not charged with power, and the energy storage device 45 does not discharge.

[0053] Therefore, in this case, power corresponding to the requested output PWc is supplied from the plant to the external power system 59.

[0054] The extraction controller 104 determines whether the extraction conditions are met for extracting a portion of the compressed air in the intermediate casing 3 as extraction air. As mentioned above, these extraction conditions are that the actual output PWr detected by the output meter 55 is less than or equal to the extraction output. When the extraction controller 104 determines that the extraction conditions are met, it instructs the extraction valve 32 to open. As a result, the extraction valve 32 opens, and a portion of the compressed air in the intermediate casing 3 is supplied to the auxiliary turbine 33 as extraction air via the extraction line 31. The auxiliary turbine 33 starts to drive due to the inflow of this extraction air. The driving force of the auxiliary turbine 33 is transmitted to the auxiliary generator 41, and the auxiliary generator 41 starts generating electricity.

[0055] The switchgear controller 105, seeing that the extraction valve 32 has opened, instructs the switchgear 54b, located on the BESS-dedicated power line 51b, to turn ON. As a result, the switchgear 54b turns ON, and the electricity generated by the auxiliary generator 41 charges the energy storage device 45.

[0056] If the extraction controller 104 determines that the extraction conditions are not met, it instructs the extraction valve 32 to close. Based on this instruction, if the extraction valve 32 is open, it will close, and if the extraction valve 32 is closed, it will remain closed.

[0057] Furthermore, if the extraction controller 104 determines that the extraction conditions are not met, the switchgear controller 105 determines whether the discharge conditions are met. Here, the discharge conditions are that the requested output PWc is greater than or equal to the discharge output which is greater than the rated output of the gas turbine 1, and that the change in the requested output PWc per unit time is greater than a predetermined value. Receiving a carbon dioxide capture instruction from the DAC controller 106 is also included in the discharge conditions. If the switchgear controller 105 determines that the discharge conditions are met, it instructs the switch 54b installed on the BESS dedicated power line 51b to turn on. As a result, the switch 54b turns on, and the power stored in the energy storage device 45 is discharged.

[0058] When the switchgear controller 105 determines that the discharge conditions are not met, it instructs the switchgear 54b, which is installed on the BESS-dedicated power line 51b, to turn off. As a result, the switchgear 54b turns off, and the power stored in the energy storage device 45 is no longer discharged.

[0059] Next, we will explain the operation of the carbon dioxide capture device 60.

[0060] The main controller 101 determines whether or not to recover carbon dioxide (CO2) from the atmosphere A. Specifically, the main controller 101 determines to recover carbon dioxide (CO2) from the atmosphere A when, for example, the operator instructs it to recover carbon dioxide (CO2) or when it is time for carbon dioxide (CO2) recovery.

[0061] When the main controller 101 determines that carbon dioxide (CO2) should be recovered, it outputs a carbon dioxide recovery instruction to the DAC controller 106. Upon receiving this instruction, the DAC controller 106 outputs an open instruction to the inlet damper 66i and the outlet damper 66o. As a result, the inlet damper 66i and the outlet damper 66o open, allowing atmospheric air A to flow into the duct 61 of the carbon dioxide recovery device 60. Furthermore, as described above, the DAC controller 106 outputs a carbon dioxide recovery instruction to the switchgear controller 105. Upon receiving this instruction, the switchgear controller 105 instructs the switch 54b located on the BESS dedicated power line 51b to turn on. Upon receiving this instruction, the switchgear controller 105 further instructs the switch 54f located on the fan dedicated power line 51f to turn on. As a result, this switch 54b turns on, and the power stored in the energy storage device 45 is discharged. Furthermore, the switch 54f is turned ON, and the power discharged from the energy storage device 45 is supplied to the electric motor 63m of the inlet fan 63f and the electric motor 64m of the outlet fan 64f, driving the inlet fan 63f and the outlet fan 64f. As a result, air A flows into the duct 61 from the inlet 61i of the carbon dioxide recovery device 60, and carbon dioxide CO2 in this air A is adsorbed by the adsorbent material 62. The air A that has passed through the adsorbent material 62 is discharged outside the duct 61 from the outlet 61o of the duct 61.

[0062] As described above, when the main controller 101 determines that carbon dioxide CO2 should be recovered, the carbon dioxide recovery device 60 is activated by an instruction from the DAC controller 106, as shown in the flowchart in Figure 2, and carbon dioxide CO2 from the atmosphere A is recovered by this carbon dioxide recovery device 60 (recovery process S3).

[0063] As mentioned above, if the actual output PWr detected by the output meter 55 is less than or equal to the extraction output, the auxiliary generator 41 generates power (power generation process S1). The power generated by this auxiliary generator 41 is charged to the energy storage device 45 (charging process S2). In the charging process S2, power from the external power system 59 may also be used to charge the energy storage device 45. In the recovery process S3, the power charged to the energy storage device 45 in the charging process S2 is used to drive the inlet fan 63f and the outlet fan 64f, causing atmospheric air A to flow into the duct 61 of the carbon dioxide recovery device 60. If the auxiliary generator 41 is generating power during the recovery process S3, the power generated by this auxiliary generator 41 is directly supplied to the electric motor 63m of the inlet fan 63f and the electric motor 64m of the outlet fan 64f. In addition, in the recovery process S3, power from the external power system 59 may be used to drive the electric motor 63m of the inlet fan 63f and the electric motor 64m of the outlet fan 64f.

[0064] The main controller 101 determines whether or not to stop carbon dioxide (CO2) capture. Specifically, the main controller 101 decides to stop capturing carbon dioxide (CO2) from atmosphere A if, for example, the operator instructs it to stop capturing carbon dioxide (CO2) or if it is outside the carbon dioxide (CO2) capture time slot.

[0065] When the main controller 101 determines that carbon dioxide (CO2) recovery should be stopped, it outputs a recovery stop instruction to the DAC controller 106. Upon receiving this instruction, the DAC controller 106 outputs a recovery stop instruction to the switchgear controller 105. Upon receiving this instruction, the switchgear controller 105 instructs the switch 54b on the BESS-dedicated power line 51b and the switch 54f on the fan-dedicated power line 51f to turn off. As a result, the switch 54b turns off, and the power stored in the energy storage device 45 is no longer discharged. Furthermore, the power generated by the auxiliary generator 41, or the power stored in the energy storage device 45, is no longer supplied to the electric motor 63m of the inlet fan 63f and the electric motor 64m of the outlet fan 64f, causing the inlet fan 63f and the outlet fan 64f to stop. As a result, atmospheric air A no longer flows into the duct 61 of the carbon dioxide recovery device 60.

[0066] The main controller 101 determines whether or not to release carbon dioxide CO2 from the adsorbent 62. Specifically, the main controller 101 determines to release carbon dioxide CO2 from the adsorbent 62 if, for example, the total time since the release of carbon dioxide CO2 from the adsorbent 62 to the recovery process S3 has elapsed beyond a predetermined recovery limit time and the gas turbine 1 is running. The recovery limit time is the total time since the release of carbon dioxide CO2 from the adsorbent 62 to the recovery process S3, and is the time during which the carbon dioxide CO2 adsorption performance of the adsorbent 62 is expected to decrease.

[0067] When the main controller 101 determines that carbon dioxide CO2 should be released from the adsorbent 62, it outputs a carbon dioxide release instruction to the DAC controller 106. Upon receiving this instruction, the DAC controller 106 outputs an open instruction to the heat transfer valve 71 and a close instruction to the inlet damper 66i and outlet damper 66o. As a result, the heat transfer valve 71 opens, allowing a portion of the exhaust gas that has been exhausted from the gas turbine 1 and passed through the waste heat recovery boiler 21 to flow into the duct 61 of the carbon dioxide recovery device 60 via the heat transfer line 70. In addition, the inlet damper 66i and outlet damper 66o close, preventing atmospheric air A from flowing into the duct 61 of the carbon dioxide recovery device 60. Therefore, the adsorbent 62 in the duct 61 is heated by the exhaust gas, and carbon dioxide CO2 is released from the adsorbent 62. Furthermore, the DAC controller 106 instructs the suction valve 68 to open. As a result, the suction valve 68 opens, allowing the gas in the duct 61 to flow into the suction line 67. Furthermore, the DAC controller 106 outputs a carbon dioxide release instruction to the switch controller 105. Upon receiving this instruction, the switch controller 105 instructs the switch 54b on the BESS dedicated power line 51b and the switch 54p on the pump dedicated power line 51p to turn on. As a result, the switch 54b turns on, and the power stored in the energy storage device 45 is discharged. Furthermore, the switch 54p turns on, and the power discharged from the energy storage device 45 is supplied to the electric motor 65m of the vacuum pump 65p, driving the vacuum pump 65p. Driven by this vacuum pump 65p, the carbon dioxide CO2 released from the adsorbent 62 is sucked out from inside the duct 61 and stored in a tank via the suction line 67 (release process S4). In addition, during the detachment process S4, the electric motor 65m of the vacuum pump 65p may be driven by power from the external power system 59.

[0068] The main controller 101 determines whether or not to terminate the detachment process S4. Specifically, the main controller 101 determines to terminate the detachment process S4 if, for example, the execution time of the detachment process S4 has elapsed to a predetermined time.

[0069] When the main controller 101 determines that the detachment process S4 is complete, it outputs a detachment cancellation instruction to the DAC controller 106. Upon receiving this instruction, the DAC controller 106 outputs a close instruction to the heat transfer valve 71 and the suction valve 68, and an open instruction to the inlet damper 66i and the outlet damper 66o. As a result, the heat transfer valve 71 is closed, preventing exhaust gas from being exhausted from the gas turbine 1 from flowing into the duct 61. In addition, the inlet damper 66i and the outlet damper 66o are opened, allowing atmospheric air A to flow into the duct 61 of the carbon dioxide recovery device 60. Furthermore, the DAC controller 106 outputs a detachment cancellation instruction to the switch controller 105. Upon receiving this instruction, the switch controller 105 instructs the switch 54b on the BESS dedicated power line 51b and the switch 54p on the pump dedicated power line 51p to turn off. As a result, switches 54b and 54p are turned off, power is no longer supplied to the electric motor 65m of the vacuum pump 65p, and the vacuum pump 65p stops.

[0070] As described above, in this embodiment, in order to suppress the output of the gas turbine 1, compressed air is extracted from the gas turbine 1, and this compressed air is used to drive the auxiliary turbine 33, which in turn generates electricity with the auxiliary generator 41. In the recovery process S3, the electricity generated by the auxiliary generator 41 is used to drive the inlet fan 63f and the outlet fan 64f. Therefore, in this embodiment, the drive power necessary for executing the recovery process S3 can be obtained.

[0071] Furthermore, in this embodiment, the exhaust gas that is discharged from the gas turbine 1, passes through the waste heat recovery boiler 21, and would normally be discharged from the chimney 23, is used as a heat transfer medium to heat the adsorbent 62 in the detachment process S4. In addition, in this embodiment, the electricity generated by the auxiliary generator 41 is used to drive the vacuum pump 65p in the detachment process S4. Thus, in this embodiment, the heat source and driving power necessary for executing the detachment process S4 can be obtained.

[0072] In other words, this embodiment offers superior economic efficiency in terms of capturing carbon dioxide from the atmosphere.

[0073] "Second Embodiment of Carbon Dioxide Capture Equipment" The second embodiment of the carbon dioxide capture equipment related to this disclosure will be described below with reference to Figure 3.

[0074] The carbon dioxide recovery equipment in this embodiment differs from the carbon dioxide recovery equipment in the first embodiment only in the heat transfer medium line. The heat transfer medium flowing through the heat transfer medium line 70a of the carbon dioxide recovery equipment in this embodiment is compressed air extracted from the gas turbine 1. Therefore, one end of the heat transfer medium line 70a in this embodiment is connected to the intermediate casing 3 of the gas turbine 1, and the other end of the heat transfer medium line 70a is connected to the duct 61 of the carbon dioxide recovery device 60. The heat transfer medium line 70a in this embodiment is also provided with a heat transfer medium valve 71a that can adjust the flow rate of the heat transfer medium flowing through it.

[0075] The carbon dioxide recovery device 60 in this embodiment also performs a recovery process S3 and a detachment process S4, similar to the carbon dioxide recovery device 60 in the first embodiment described according to the flowchart shown in Figure 2. However, in the detachment process S4 in this embodiment, compressed air extracted from the gas turbine 1 is used as the heat transfer medium for detaching carbon dioxide CO2 from the adsorbent 62. Therefore, the execution of the detachment process S4 in this embodiment is conditional on the gas turbine 1 being in operation.

[0076] In this embodiment as well, in order to suppress the output of the gas turbine 1, compressed air is extracted from the gas turbine 1, and this compressed air is used to drive the auxiliary turbine 33, which in turn generates electricity with the auxiliary generator 41. In the recovery process S3, the electricity generated by the auxiliary generator 41 is used to drive the inlet fan 63f and the outlet fan 64f. Therefore, in this embodiment as well, the drive power necessary to perform the recovery process S3 can be obtained.

[0077] Furthermore, in this embodiment, in order to suppress the output of the gas turbine 1, compressed air is extracted from the gas turbine 1 and this compressed air is used as a heat transfer medium to heat the adsorbent 62 in the detachment process S4. In addition, in this embodiment, in the detachment process S4, the electricity generated by the auxiliary generator 41 is used to drive the vacuum pump 65p. Therefore, in this embodiment as well, the heat source and driving power necessary for executing the detachment process S4 can be obtained.

[0078] In other words, this embodiment also offers excellent economic efficiency in terms of capturing carbon dioxide from the atmosphere.

[0079] "Third Embodiment of Carbon Dioxide Capture Equipment" The third embodiment of the carbon dioxide capture equipment related to this disclosure will be described below with reference to Figure 4.

[0080] The carbon dioxide recovery equipment in this embodiment differs from the carbon dioxide recovery equipment in the first embodiment only in the extraction equipment and the heat transfer medium line. The extraction equipment 30b of the carbon dioxide recovery equipment in this embodiment is provided in the extraction line 31 and includes a boiler 39 capable of generating steam using the heat of the compressed air flowing through the extraction line 31. The heat transfer medium flowing through the heat transfer medium line 70b of the carbon dioxide recovery equipment in this embodiment is the steam generated by this boiler 39. Therefore, one end of the heat transfer medium line 70b in this embodiment is connected to the boiler 39, and the other end of the heat transfer medium line 70b is connected to the duct 61 of the carbon dioxide recovery device 60. The heat transfer medium line 70b in this embodiment is also provided with a heat transfer medium valve 71b that can adjust the flow rate of the heat transfer medium flowing through it.

[0081] The carbon dioxide recovery device 60 in this embodiment also performs a recovery process S3 and a detachment process S4, similar to the carbon dioxide recovery device 60 in the first embodiment described according to the flowchart shown in Figure 2. However, in the detachment process S4 in this embodiment, steam generated by the heat of compressed air extracted from the gas turbine 1 is used as the heat transfer medium for detaching carbon dioxide CO2 from the adsorbent 62. Therefore, the execution of the detachment process S4 in this embodiment is conditional on the gas turbine 1 being in operation.

[0082] In this embodiment as well, in order to suppress the output of the gas turbine 1, compressed air is extracted from the gas turbine 1, and this compressed air is used to drive the auxiliary turbine 33, which in turn generates electricity with the auxiliary generator 41. In the recovery process S3, the electricity generated by the auxiliary generator 41 is used to drive the inlet fan 63f and the outlet fan 64f. Therefore, in this embodiment as well, the drive power necessary to perform the recovery process S3 can be obtained.

[0083] Furthermore, in this embodiment, in order to suppress the output of the gas turbine 1, compressed air is extracted from the gas turbine 1, and steam is generated using the heat of this compressed air. This steam is then used as a heat transfer medium to heat the adsorbent 62 in the detachment process S4. In addition, in this embodiment, the electricity generated by the auxiliary generator 41 is used to drive the vacuum pump 65p in the detachment process S4. Therefore, in this embodiment as well, the heat source and driving power necessary for executing the detachment process S4 can be obtained.

[0084] In other words, this embodiment also offers excellent economic efficiency in terms of capturing carbon dioxide from the atmosphere.

[0085] "Fourth embodiment of a carbon dioxide capture system" The fourth embodiment of the carbon dioxide capture equipment related to this disclosure will be described below with reference to Figure 5.

[0086] The carbon dioxide recovery equipment in this embodiment differs from the carbon dioxide recovery equipment in the first embodiment only in the heat transfer medium line. The heat transfer medium flowing through the heat transfer medium line 70c of the carbon dioxide recovery equipment in this embodiment is steam generated by the waste heat recovery boiler 21 and has passed through the steam turbine 24. Therefore, one end of the heat transfer medium line 70c in this embodiment is connected to the steam turbine 24, and the other end of the heat transfer medium line 70 is connected to the duct 61 of the carbon dioxide recovery device 60. In addition, the heat transfer medium line 70c in this embodiment is also provided with a heat transfer medium valve 71c that can adjust the flow rate of the heat transfer medium flowing through it.

[0087] The carbon dioxide recovery device 60 in this embodiment also performs a recovery process S3 and a detachment process S4, similar to the carbon dioxide recovery device 60 in the first embodiment described according to the flowchart shown in Figure 2. However, in the detachment process S4 in this embodiment, steam that has passed through the steam turbine 24 is used as the heat transfer medium for detaching carbon dioxide CO2 from the adsorbent 62. Therefore, the execution of the detachment process S4 in this embodiment is conditional on the waste heat recovery boiler 21 generating steam.

[0088] In this embodiment as well, in order to reduce the output of the gas turbine 1, compressed air is extracted from the gas turbine 1, and this compressed air is used to drive the auxiliary turbine 33, which in turn generates electricity with the auxiliary generator 41. In the recovery process S3, the electricity generated by the auxiliary generator 41 is used to drive the inlet fan 63f and the outlet fan 64f. Therefore, in this embodiment as well, the running costs required to perform the recovery process S3 can be reduced.

[0089] Furthermore, in this embodiment, the steam that has passed through the steam turbine 24 is used as a heat transfer medium to heat the adsorbent 62 in the detachment process S4. In addition, in this embodiment, the electricity generated by the auxiliary generator 41 is used to drive the vacuum pump 65p in the detachment process S4. Therefore, in this embodiment as well, the running costs required to perform the detachment process S4 can be reduced.

[0090] In other words, this embodiment also offers excellent economic efficiency in terms of capturing carbon dioxide from the atmosphere.

[0091] "Variations" In each of the above embodiments, the carbon dioxide recovery device 60 has an inlet fan 63f and an outlet fan 64f that guide the atmosphere A into the duct 61. However, the carbon dioxide recovery device 60 may have only one of the inlet fan 63f and the outlet fan 64f.

[0092] The carbon dioxide capture equipment in each of the above embodiments includes a power storage device 45. However, this power storage device 45 may be omitted. In this case, the power stored in the power storage device 45 cannot be used to drive the inlet fan 63f, outlet fan 64f, and vacuum pump 65p, so carbon dioxide capture and carbon dioxide release are only possible when the auxiliary generator 41 is running.

[0093] The carbon dioxide recovery equipment in each of the above embodiments is equipped with a waste heat utilization equipment 20. However, the carbon dioxide recovery equipment in the first, second, and third embodiments does not need to be equipped with a waste heat utilization equipment 20.

[0094] The carbon dioxide recovery apparatus 60 in each of the above embodiments is an S-DAC (Direct Air Capture) type carbon dioxide recovery apparatus that uses a solid adsorbent 62. However, the carbon dioxide recovery apparatus may also be an L-DAC (Direct Air Capture) type carbon dioxide recovery apparatus that uses a liquid adsorbent. In the case of an L-DAC (Direct Air Capture) type carbon dioxide recovery apparatus, for example, an amine aqueous solution is used as the adsorbent. This apparatus has an absorption tower in which the amine aqueous solution is stored, a regeneration tower for regenerating the amine aqueous solution that has absorbed carbon dioxide, a pump for sending the amine aqueous solution that has absorbed carbon dioxide from the absorption tower to the regeneration tower, and a pump for returning the regenerated amine aqueous solution to the absorption tower. A heat transfer medium is used in the regeneration tower to heat the amine aqueous solution that has absorbed carbon dioxide. The electricity generated by the auxiliary generator 41 is used to drive the electric motors of each pump in this apparatus.

[0095] Furthermore, this disclosure is not limited to the embodiments and modifications described above. Various additions, modifications, substitutions, and partial deletions are possible, without departing from the conceptual idea and spirit of the present invention derived from the claims and their equivalents.

[0096] "Addendum" The carbon dioxide capture equipment in the above embodiments and modifications can be understood, for example, as follows.

[0097] (1) The carbon dioxide capture equipment in the first embodiment is: The gas turbine 1 comprises a compressor 10 capable of compressing air A, a combustor 15 capable of burning fuel F in the compressed air compressed by the compressor 10 to generate combustion gas, and a turbine 16 driven by the combustion gas; a carbon dioxide recovery device 60 capable of recovering carbon dioxide CO2 from the atmosphere A; and heat transfer medium lines 70, 70a, 70b, 70c capable of guiding the heat transfer medium generated by the operation of the gas turbine 1 to the carbon dioxide recovery device 60. The carbon dioxide recovery device 60 has an adsorbent material 62 capable of adsorbing carbon dioxide CO2 from the atmosphere A and releasing the adsorbed carbon dioxide CO2 by heating with the heat transfer medium.

[0098] In this embodiment, a heat transfer medium generated by driving the gas turbine 1 is used as a heat transfer medium to heat the adsorbent 62 in order to release carbon dioxide CO2 from the adsorbent 62. Therefore, in this embodiment, a heat source necessary for carrying out the process of releasing carbon dioxide CO2 from the adsorbent 62 can be obtained.

[0099] (2) The carbon dioxide capture equipment in the second embodiment is: In the carbon dioxide recovery equipment according to the first embodiment, the heat transfer medium line 70 can guide the exhaust gas discharged from the gas turbine 1 to the carbon dioxide recovery device 60 as the heat transfer medium.

[0100] The exhaust gas discharged from the gas turbine 1 has a lower energy level than the combustion gas flowing from the combustor 15 into the turbine 16. In this embodiment, this exhaust gas is used as a heat transfer medium. Therefore, in this embodiment, the running costs required to carry out the process of removing carbon dioxide CO2 from the adsorbent 62 can be reduced.

[0101] (3) The carbon dioxide recovery equipment in the third embodiment is In the carbon dioxide recovery equipment according to the second embodiment, a waste heat recovery boiler 21 capable of generating steam using the heat of the exhaust gas discharged from the gas turbine 1 is provided. The heat transfer medium line 70 can guide the exhaust gas that has passed through the waste heat recovery boiler 21 to the carbon dioxide recovery device 60 as the heat transfer medium.

[0102] The exhaust gas that has passed through the heat recovery boiler 21 has a lower energy level than the exhaust gas that has not passed through the heat recovery boiler 21. In this embodiment, the exhaust gas that has passed through the heat recovery boiler 21 is used as the heat transfer medium. Therefore, in this embodiment, the running costs required to perform the process of releasing carbon dioxide CO2 from the adsorbent 62 can be reduced compared to the case where a heat transfer medium is generated separately.

[0103] (4) The carbon dioxide capture equipment in the fourth embodiment is: In the carbon dioxide recovery equipment according to the first embodiment, the heat transfer medium line 70a can guide the compressed air extracted from the gas turbine 1 to the carbon dioxide recovery device 60 as the heat transfer medium.

[0104] The extraction of compressed air from the gas turbine 1 is performed to reduce the output of the gas turbine 1. In this embodiment, the compressed air extracted from the gas turbine 1 is used as a heat transfer medium to reduce the output of the gas turbine 1. Therefore, in this embodiment, the running costs required to perform the process of removing carbon dioxide CO2 from the adsorbent 62 can be reduced compared to the case where a heat transfer medium is generated separately.

[0105] (5) The carbon dioxide capture equipment in the fifth embodiment is: In the carbon dioxide recovery equipment according to the first embodiment, boilers 39 and 21 are provided that are capable of generating steam using the heat generated by driving the gas turbine 1. The heat transfer fluid lines 70b and 70c can guide the steam from the boilers 39 and 21 to the carbon dioxide recovery device 60 as the heat transfer fluid.

[0106] In this embodiment, steam generated using the heat produced by driving the gas turbine 1 is used as the heat transfer medium. Therefore, in this embodiment, the running costs required to perform the process of releasing carbon dioxide CO2 from the adsorbent 62 can be reduced compared to the case where a heat transfer medium is generated separately.

[0107] (6) The carbon dioxide capture equipment in the sixth embodiment is: In the carbon dioxide recovery equipment according to the fifth embodiment, the boiler 39 is a boiler capable of generating steam by utilizing the heat of the compressed air extracted from the gas turbine 1.

[0108] The extraction of compressed air from the gas turbine 1 is performed to reduce the output of the gas turbine 1. In this embodiment, in order to reduce the output of the gas turbine 1, steam generated using the heat of the compressed air extracted from the gas turbine 1 is used as a heat transfer medium. Therefore, in this embodiment, the running costs required to perform the process of removing carbon dioxide CO2 from the adsorbent 62 can be reduced compared to the case in which a heat transfer medium is generated separately.

[0109] (7) The carbon dioxide capture equipment in the seventh embodiment is: In the carbon dioxide recovery equipment according to the fifth embodiment, the boiler 21 is a waste heat recovery boiler capable of generating steam by utilizing the heat of the exhaust gas discharged from the gas turbine 1.

[0110] In this embodiment, steam generated using the heat of exhaust gas discharged from the gas turbine 1 is used as the heat transfer medium. Therefore, in this embodiment, the running costs required to perform the process of releasing carbon dioxide CO2 from the adsorbent 62 can be reduced compared to the case where a heat transfer medium is generated separately.

[0111] (8) The carbon dioxide capture equipment in the eighth embodiment is: In the carbon dioxide recovery equipment according to the seventh embodiment, a steam turbine 24 is provided that can be driven by steam generated in the waste heat recovery boiler 21. The heat transfer medium line 70c can guide steam from the steam turbine 24 to the carbon dioxide recovery device 60 as the heat transfer medium.

[0112] The steam from the steam turbine 24 has a lower energy level than the steam that does not reach the steam turbine 24. In this embodiment, the steam from the steam turbine 24 is used as the heat transfer medium. Therefore, in this embodiment, the running costs required to perform the process of removing carbon dioxide CO2 from the adsorbent 62 can be reduced compared to the case where a heat transfer medium is generated separately.

[0113] (9) The carbon dioxide capture equipment in the ninth embodiment is: In the carbon dioxide recovery equipment according to any one of the first to eight embodiments described above, the carbon dioxide recovery device 60 has electrically powered devices 63, 64, and 65. Furthermore, it includes power lines 51c, 51s, 51f, and 51p that electrically connect the external power system 59 to the devices 63, 64, and 65, and a storage battery 46 connected to the power lines 51c, 51s, 51f, and 51p. The storage battery 46 is capable of storing power from the external power system 59 via the power lines 51c, 51s, 51f, and 51p.

[0114] (10) The carbon dioxide capture equipment in the tenth embodiment is In the carbon dioxide capture equipment according to the ninth embodiment described above, the devices 63, 64, and 65 can be driven by power from the external power system 59.

[0115] In this embodiment, even when the battery 46 is not charged, the devices 63, 64, and 65 can be driven by power from the external power grid 59.

[0116] (11) The carbon dioxide capture equipment in the eleventh embodiment is: In the carbon dioxide capture equipment according to the ninth embodiment described above, the devices 63, 64, and 65 can be powered by electricity from the storage battery 46.

[0117] In this embodiment, the devices 63, 64, and 65 can be powered by electricity from the storage battery 46. Therefore, in this embodiment, the degree of flexibility in the driving timing of the devices 63, 64, and 65 of the carbon dioxide capture device 60 can be increased compared to when the storage battery 46 is not present.

[0118] (12) The carbon dioxide capture equipment in the twelfth embodiment is: In the carbon dioxide recovery equipment according to any one of the first to eight embodiments described above, the carbon dioxide recovery device 60 has electrically driven equipment 63, 64, 65. Furthermore, it includes an extraction line 31 through which the compressed air extracted from the gas turbine 1 can flow, an auxiliary turbine 33 connected to the extraction line 31 and driven by the compressed air flowing through the extraction line 31, an auxiliary generator 41 connected to the auxiliary turbine 33 and capable of generating electricity by the drive of the auxiliary turbine 33, and power lines 51a, 51f, 51p, 51s that electrically connect the auxiliary generator 41 and the equipment 63, 64, 65.

[0119] In this embodiment, the output of the gas turbine 1 can be reduced by extracting compressed air from the gas turbine 1. Furthermore, in this embodiment, in order to reduce the output of the gas turbine 1, compressed air is extracted from the gas turbine 1 and used to drive the auxiliary turbine 33, which in turn generates electricity with the auxiliary generator 41. In this embodiment, the electricity generated by the auxiliary generator 41 is used to drive the components 63, 64, and 65 of the carbon dioxide capture device 60. Therefore, in this embodiment, power can be obtained to drive the components 63, 64, and 65 of the carbon dioxide capture device 60.

[0120] (13) The carbon dioxide capture equipment in the thirteenth aspect is: In the carbon dioxide capture equipment according to the twelve embodiments described above, a storage battery 46 is provided that can store the electricity generated by the auxiliary generator 41. The storage battery 46 can supply power to the devices 63, 64, and 65 via the power lines 51a, 51f, 51p, and 51s.

[0121] In this embodiment, the power generated by the auxiliary generator 41 and stored in the battery 46 can be used to drive the components 63, 64, and 65 of the carbon dioxide capture device 60. On the other hand, if the battery 46 is not present, the auxiliary generator 41 must be generating power in order to drive the components 63, 64, and 65 of the carbon dioxide capture device 60. Therefore, in this embodiment, the degree of flexibility in the driving timing of the components 63, 64, and 65 of the carbon dioxide capture device 60 can be increased compared to when the battery 46 is not present.

[0122] (14) The carbon dioxide capture equipment in the fourteenth embodiment is: The gas turbine 1 comprises a compressor 10 capable of compressing air A, a combustor 15 capable of burning fuel F in the compressed air compressed by the compressor 10 to produce combustion gas, and a turbine 16 driven by the combustion gas; a carbon dioxide recovery device 60 having electrically driven equipment 63, 64, 65 capable of recovering carbon dioxide CO2 from the atmosphere A; an extraction line 31 through which the compressed air extracted from the gas turbine 1 can flow; an auxiliary turbine 33 connected to the extraction line 31 and driven by the compressed air flowing through the extraction line 31; an auxiliary generator 41 connected to the auxiliary turbine 33 and capable of generating electricity by driving the auxiliary turbine 33; and power lines 51a, 51f, 51p, 51s electrically connecting the auxiliary generator 41 and the equipment 63, 64, 65.

[0123] In this embodiment, similar to the carbon dioxide capture equipment in the ninth embodiment, the output of the gas turbine 1 can be reduced. Furthermore, in this embodiment, similar to the carbon dioxide capture equipment in the ninth embodiment, power can be obtained to drive the components 63, 64, and 65 of the carbon dioxide capture device 60.

[0124] (15) The carbon dioxide capture equipment in the fifteenth embodiment is: In the carbon dioxide capture equipment according to the fourteenth embodiment described above, a storage battery 46 is provided that can store the electricity generated by the auxiliary generator 41. The storage battery 46 can supply power to the devices 63, 64, and 65 via the power lines 51a, 51f, 51p, and 51s.

[0125] In this embodiment, similar to the carbon dioxide capture equipment in the tenth embodiment, the degree of freedom in the driving timing of the components 63, 64, and 65 of the carbon dioxide capture device 60 can be increased compared to when there is no battery 46.

[0126] (16) In the carbon dioxide recovery method of the sixteenth embodiment, A carbon dioxide recovery device 60 having an adsorbent 62 capable of adsorbing carbon dioxide CO2 performs a recovery step S3 in which carbon dioxide CO2 is recovered from the atmosphere A, and a release step S4 in which a heat transfer medium is introduced to the carbon dioxide recovery device 60 and the carbon dioxide CO2 adsorbed on the adsorbent 62 is released from the adsorbent 62. The heat transfer medium is generated by driving a gas turbine 1 having a compressor 10 capable of compressing air A, a combustor 15 capable of generating combustion gas by burning fuel F in the compressed air compressed by the compressor 10, and a turbine 16 that can be driven by the combustion gas.

[0127] In this embodiment, similar to the carbon dioxide capture equipment in the first embodiment, it is possible to obtain the heat source necessary for carrying out the process of releasing carbon dioxide CO2 from the adsorbent 62, compared to when a heat transfer medium is generated separately.

[0128] (17) In the carbon dioxide recovery method of the seventeenth embodiment, In the carbon dioxide recovery method according to the sixteenth embodiment described above, the heat transfer medium is one of the following: exhaust gas discharged from the gas turbine 1, compressed air extracted from the gas turbine 1, and steam generated using the heat generated by driving the gas turbine 1.

[0129] In this embodiment, similar to the carbon dioxide recovery equipment in any one of the second to eighth embodiments, the running costs required to perform the process of releasing carbon dioxide CO2 from the adsorbent 62 can be reduced compared to the case where a heat transfer medium is generated separately.

[0130] (18) In the carbon dioxide recovery method of the eighteenth embodiment, In the carbon dioxide recovery method according to the sixteenth or seventeenth embodiment, the carbon dioxide recovery device 60 has electrically powered devices 63, 64, and 65. Furthermore, a charging step S2 is performed to store power from an external power grid 59 in a storage battery 46.

[0131] (19) In the carbon dioxide recovery method of the nineteenth embodiment, In the carbon dioxide recovery method according to the eighteenth embodiment described above, in the recovery step S3 or the detachment step S4, the devices 63, 64, and 65 are driven by power from the external power system 59.

[0132] In this embodiment, even when the battery 46 is not charged, the device can be driven by power from an external power grid.

[0133] (20) In the carbon dioxide recovery method of the twentieth embodiment, In the carbon dioxide recovery method according to the eighteenth embodiment described above, in the recovery step S3 or the detachment step S4, the devices 63, 64, and 65 are driven by power from the storage battery 46.

[0134] In this embodiment, the equipment can be powered by electricity from the storage battery 46. Therefore, in this embodiment, the degree of freedom in the driving timing of the equipment 63, 64, and 65 of the carbon dioxide capture device 60 can be increased compared to when the storage battery 46 is not present.

[0135] (21) In the carbon dioxide recovery method of the 21st embodiment, In the carbon dioxide recovery method according to the sixteenth or seventeenth embodiment, the carbon dioxide recovery apparatus 60 has electrically driven equipment 63, 64, and 65. The compressed air extracted from the gas turbine 1 drives the auxiliary turbine 33, and the power generation process S1 is performed in which the auxiliary generator 41 generates electricity by driving the auxiliary turbine 33. In the recovery process S3 or the detachment process S4, the electricity generated in the power generation process S1 drives the equipment 63, 64, and 65.

[0136] In this embodiment, similar to the carbon dioxide capture equipment in the ninth embodiment, the output of the gas turbine 1 can be reduced. Furthermore, in this embodiment, similar to the carbon dioxide capture equipment in the ninth embodiment, power can be obtained to drive the components 63, 64, and 65 of the carbon dioxide capture device 60.

[0137] (22) In the carbon dioxide recovery method of the 22nd embodiment, In the carbon dioxide recovery method according to the 21st embodiment described above, a charging step S2 is performed to store the electricity generated in the power generation step S1 in a storage battery 46. In the recovery step S3 or the detachment step S4, the devices 63, 64, and 65 are driven with the electricity stored in the storage battery 46 in the charging step S2.

[0138] In this embodiment, similar to the carbon dioxide capture equipment in the tenth embodiment, the degree of freedom in the driving timing of the components 63, 64, and 65 of the carbon dioxide capture device 60 can be increased compared to when there is no battery 46.

[0139] (23) In the carbon dioxide recovery method of the twenty-third aspect, A carbon dioxide recovery device 60 having electrically driven devices 63, 64, and 65 performs the following steps: a recovery step S3 in which carbon dioxide CO2 from the atmosphere A is recovered by adsorbing it onto an adsorbent 62; a detachment step S4 in which a heat transfer medium is introduced to the carbon dioxide recovery device 60 to detach the carbon dioxide CO2 adsorbed onto the adsorbent 62 from the adsorbent 62; and a power generation step S1 in which compressed air is extracted from a gas turbine 1 having a compressor 10 capable of compressing air A, a combustor 15 capable of burning fuel F in the compressed air compressed by the compressor 10 to produce combustion gas, and a turbine 16 driven by the combustion gas, and an auxiliary turbine 33 is driven by the auxiliary turbine 33 to generate electricity with an auxiliary generator 41. In the recovery step S3 or the detachment step S4, the devices 63, 64, and 65 are driven by the electricity generated in the power generation step S1.

[0140] In this embodiment, similar to the carbon dioxide capture equipment in the twelfth embodiment, the output of the gas turbine 1 can be reduced. Furthermore, in this embodiment, similar to the carbon dioxide capture equipment in the ninth embodiment, power can be obtained to drive the components 63, 64, and 65 of the carbon dioxide capture device 60.

[0141] (24) In the carbon dioxide recovery method of the twenty-fourth embodiment, In the carbon dioxide recovery method according to the twenty-third embodiment described above, a charging step S2 is performed to store the electricity generated in the power generation step S1 in a storage battery 46. In the recovery step S3 or the detachment step S4, the devices 63, 64, and 65 are driven with the electricity stored in the storage battery 46 in the charging step S2.

[0142] In this embodiment, similar to the carbon dioxide capture equipment in the thirteenth embodiment, the degree of freedom in the driving timing of the components 63, 64, and 65 of the carbon dioxide capture device 60 can be increased compared to when there is no battery 46. [Explanation of Symbols]

[0143] 1: Gas turbine 2: Gas turbine rotor 3: Intermediate casing 4: Fuel line 5: Fuel valve 6: Gas turbine generator 10: Compressor 11: Compressor rotor 11s: Compressor rotor shaft 11b: Moving blade row 12: Compressor casing 13: Intake volume regulator 13v: Inlet Guide Vane (IGV) 13d: Drive unit 15: Combustor 16: Turbine 17: Turbine Rotor 17s: Turbine rotor shaft 17b: Moving blade row 18: Turbine casing 20: Waste heat utilization equipment 21: Heat recovery boiler 21c: Boiler casing 21t: Heat transfer tube 22: Exhaust duct 23: Chimney 24: Steam Turbine 25: Main steam line 26: Condenser 27: Water supply line 28: Water supply pump 30,30b: Bleeding equipment 31: Extraction line 32: Extraction valve 33: Auxiliary Turbine 34: Auxiliary turbine rotor 35: Auxiliary turbine casing 39: Boiler 40: Auxiliary power generation equipment 41: Auxiliary generator 42: Transmission 43: Clutch 45: Energy storage device 46: Storage batteries 47: AC / DC converter 50: Power system equipment 51g: Dedicated power line for GT generators 51a: Dedicated power line for AT generator 51b: BESS dedicated power line 51s: Shared power line within the plant 51c: External power line 51f: Dedicated power line for fans 51p: Dedicated power line for pumps 53a, 53b, 53c, 53g: Transformer 54a, 54b, 54c, 54g, 54f, 54p: Switch 55: Power meter 59: External power system 60: Carbon dioxide capture device 61: Duct 61i:Entrance 61o:Exit 62: Adsorbent 63,64,65:Equipment 63f: Entrance fan 63m, 64m, 65m: Electric motor 64f: Exit fan 65p: Vacuum pump 66i: Inlet damper 66o: Outlet damper 67: Suction line 68: Suction valve 69: Drain tank 70, 70a, 70b, 70c: Heat transfer fluid line 71,71a,71b,71c: Heat medium valve 100: Control device 101: Main Controller 102: GT Controller 104: Bleeding controller 105: Switching control unit 106: DAC Controller A: Air (or atmosphere) CO2: Carbon dioxide F:Fuel PWr: Actual output PWc: Request output Ar: Rotor axis Da: Axial direction Dau: Axis upstream side Dad: Downstream side of the axis

Claims

1. A gas turbine comprising: a compressor capable of compressing air; a combustor capable of burning fuel in the compressed air compressed by the compressor to generate combustion gas; and a turbine capable of being driven by the combustion gas; A carbon dioxide capture device capable of capturing carbon dioxide from the atmosphere, A heat transfer medium line capable of guiding the heat transfer medium generated by the operation of the gas turbine to the carbon dioxide recovery device, Equipped with, The carbon dioxide recovery device has an adsorbent that can adsorb carbon dioxide from the atmosphere and release the adsorbed carbon dioxide by heating with the heat transfer medium. The heat transfer line is capable of guiding the exhaust gas discharged from the gas turbine to the carbon dioxide recovery device as the heat transfer medium. Carbon dioxide capture equipment.

2. A gas turbine comprising: a compressor capable of compressing air; a combustor capable of burning fuel in the compressed air compressed by the compressor to generate combustion gas; and a turbine capable of being driven by the combustion gas; A carbon dioxide capture device capable of capturing carbon dioxide from the atmosphere, A heat transfer medium line capable of guiding the heat transfer medium generated by the operation of the gas turbine to the carbon dioxide recovery device, A waste heat recovery boiler capable of generating steam using the heat of exhaust gas discharged from the aforementioned gas turbine, Equipped with, The carbon dioxide recovery device has an adsorbent that can adsorb carbon dioxide from the atmosphere and release the adsorbed carbon dioxide by heating with the heat transfer medium. The heat transfer line is capable of guiding the exhaust gas that has passed through the waste heat recovery boiler to the carbon dioxide recovery device as the heat transfer medium. Carbon dioxide capture equipment.

3. A gas turbine comprising: a compressor capable of compressing air; a combustor capable of burning fuel in the compressed air compressed by the compressor to generate combustion gas; and a turbine capable of being driven by the combustion gas; A carbon dioxide capture device capable of capturing carbon dioxide from the atmosphere, A heat transfer medium line capable of guiding the heat transfer medium generated by the operation of the gas turbine to the carbon dioxide recovery device, Equipped with, The carbon dioxide recovery device has an adsorbent that can adsorb carbon dioxide from the atmosphere and release the adsorbed carbon dioxide by heating with the heat transfer medium. The heat transfer line is capable of guiding the compressed air extracted from the gas turbine to the carbon dioxide recovery device as the heat transfer medium. Carbon dioxide capture equipment.

4. A gas turbine comprising: a compressor capable of compressing air; a combustor capable of burning fuel in the compressed air compressed by the compressor to generate combustion gas; and a turbine capable of being driven by the combustion gas; A carbon dioxide capture device capable of capturing carbon dioxide from the atmosphere, A heat transfer medium line capable of guiding the heat transfer medium generated by the operation of the gas turbine to the carbon dioxide recovery device, A boiler capable of generating steam using the heat generated by driving the aforementioned gas turbine, Equipped with, The carbon dioxide recovery device has an adsorbent that can adsorb carbon dioxide from the atmosphere and release the adsorbed carbon dioxide by heating with the heat transfer medium. The boiler is a boiler capable of generating steam by utilizing the heat of the compressed air extracted from the gas turbine. The heat transfer medium line is capable of guiding steam from the boiler to the carbon dioxide recovery device as the heat transfer medium. Carbon dioxide capture equipment.

5. In a carbon dioxide recovery facility according to any one of claims 1 to 4, The carbon dioxide capture device has an electrically powered device, moreover, A power line that electrically connects the external power system and the equipment, A battery connected to the aforementioned power line, Equipped with, The battery is capable of storing power from the external power system via the power line. Carbon dioxide capture equipment.

6. In the carbon dioxide recovery equipment described in Claim 5, The aforementioned device is powered by the power from the external power system. Carbon dioxide capture equipment.

7. In the carbon dioxide recovery equipment described in Claim 5, The aforementioned device is powered by electricity from the storage battery. Carbon dioxide capture equipment.

8. A gas turbine comprising: a compressor capable of compressing air; a combustor capable of generating combustion gas by burning fuel in the compressed air compressed by the compressor; and a turbine capable of being driven by the combustion gas; A carbon dioxide capture device capable of capturing carbon dioxide from the atmosphere, A heat transfer medium line capable of guiding the heat transfer medium generated by the operation of the gas turbine to the carbon dioxide recovery device, Equipped with, The carbon dioxide recovery device is A duct through which air can circulate, An adsorbent material is placed inside the duct and is capable of adsorbing carbon dioxide from the atmosphere and releasing the adsorbed carbon dioxide by heating with the heat transfer medium. At least one of the following fans is provided: an inlet fan located on the side of the duct where air flows in, with reference to the position of the adsorbent; and an outlet fan located on the side of the duct where air flows out, with reference to the position of the adsorbent. An electric motor for driving at least one of the aforementioned fans, It has, A power line that electrically connects the external power system and the electric motor, A battery connected to the aforementioned power line, Furthermore, The battery is capable of storing power from the external power system via the power line. Carbon dioxide capture equipment.

9. In a carbon dioxide recovery facility according to any one of claims 1 to 4, The carbon dioxide capture device has an electrically powered device, moreover, An extraction line through which the compressed air extracted from the gas turbine can flow, An auxiliary turbine connected to the extraction line and driven by the compressed air flowing through the extraction line, An auxiliary generator connected to the auxiliary turbine and capable of generating electricity by driving the auxiliary turbine, A power line electrically connecting the auxiliary generator and the equipment, Equipped with, Carbon dioxide capture equipment.

10. A gas turbine comprising: a compressor capable of compressing air; a combustor capable of generating combustion gas by burning fuel in the compressed air compressed by the compressor; and a turbine capable of being driven by the combustion gas; A carbon dioxide capture device capable of capturing carbon dioxide from the atmosphere, A heat transfer medium line capable of guiding the heat transfer medium generated by the operation of the gas turbine to the carbon dioxide recovery device, Equipped with, The carbon dioxide recovery device is A duct through which air can circulate, An adsorbent material is placed inside the duct and is capable of adsorbing carbon dioxide from the atmosphere and releasing the adsorbed carbon dioxide by heating with the heat transfer medium. At least one of the following fans is provided: an inlet fan located on the side of the duct where air flows in, with reference to the position of the adsorbent; and an outlet fan located on the side of the duct where air flows out, with reference to the position of the adsorbent. An electric motor for driving at least one of the aforementioned fans, It has, Furthermore, there is an extraction line through which the compressed air extracted from the gas turbine can flow, An auxiliary turbine connected to the extraction line and driven by the compressed air flowing through the extraction line, An auxiliary generator connected to the auxiliary turbine and capable of generating electricity by driving the auxiliary turbine, A power line electrically connecting the auxiliary generator and the electric motor, Equipped with, Carbon dioxide capture equipment.

11. In the carbon dioxide recovery equipment according to claim 9, The system includes a battery capable of storing electricity generated by the aforementioned auxiliary generator, The storage battery is capable of supplying power to the equipment via the power line. Carbon dioxide capture equipment.

12. A carbon dioxide recovery device having an adsorbent capable of adsorbing carbon dioxide, comprising a recovery step of recovering carbon dioxide from the atmosphere, A detachment step involves introducing a heat transfer medium to the carbon dioxide recovery device and detaching the carbon dioxide adsorbed on the adsorbent from the adsorbent, Execute, The heat transfer medium is generated by driving a gas turbine having a compressor capable of compressing air, a combustor capable of burning fuel in the compressed air compressed by the compressor to generate combustion gas, and a turbine that can be driven by the combustion gas. The heat transfer medium is one of the following: exhaust gas discharged from the gas turbine or compressed air extracted from the gas turbine. Methods for capturing carbon dioxide.

13. In the carbon dioxide recovery method according to Claim 12, The carbon dioxide capture device has an electrically powered device, Furthermore, it performs a charging process to store power from the external power grid into the battery. Methods for capturing carbon dioxide.

14. In the carbon dioxide recovery method according to Claim 13, In the recovery step or the detachment step, the equipment is powered by electricity from the external power system. Methods for capturing carbon dioxide.

15. In the carbon dioxide recovery method according to Claim 13, In the recovery step or the detachment step, the equipment is powered by electricity from the storage battery. Methods for capturing carbon dioxide.

16. In the carbon dioxide recovery method according to Claim 12, The carbon dioxide capture device has an electrically powered device, A power generation process is performed in which an auxiliary turbine is driven by the compressed air extracted from the gas turbine, and an auxiliary generator generates electricity by driving the auxiliary turbine. In the recovery step or the detachment step, the equipment is driven by the electricity generated in the power generation step. Methods for capturing carbon dioxide.

17. A carbon dioxide recovery device having an adsorbent capable of adsorbing carbon dioxide, comprising a recovery process for recovering carbon dioxide from the atmosphere, A detachment step involves introducing a heat transfer medium to the carbon dioxide recovery device and detaching the carbon dioxide adsorbed on the adsorbent from the adsorbent, Execute, The heat transfer medium is generated by driving a gas turbine having a compressor capable of compressing air, a combustor capable of burning fuel in the compressed air compressed by the compressor to generate combustion gas, and a turbine that can be driven by the combustion gas. The carbon dioxide recovery device is A duct through which air can circulate, The adsorbent is placed inside the duct and is capable of adsorbing carbon dioxide from the atmosphere and releasing the adsorbed carbon dioxide by heating with the heat transfer medium, At least one of the following fans is provided: an inlet fan located on the side of the duct where air flows in, with reference to the position of the adsorbent; and an outlet fan located on the side of the duct where air flows out, with reference to the position of the adsorbent. An electric motor for driving at least one of the aforementioned fans, It has, Furthermore, a charging process is performed to store power from the external power grid into the battery. In the recovery step or the detachment step, the electric motor is driven by power from the external power system or power from the storage battery. Methods for capturing carbon dioxide.

18. A carbon dioxide recovery device having an adsorbent capable of adsorbing carbon dioxide, comprising a recovery process for recovering carbon dioxide from the atmosphere, A detachment step involves introducing a heat transfer medium to the carbon dioxide recovery device and detaching the carbon dioxide adsorbed on the adsorbent from the adsorbent, Execute, The heat transfer medium is generated by driving a gas turbine having a compressor capable of compressing air, a combustor capable of burning fuel in the compressed air compressed by the compressor to generate combustion gas, and a turbine that can be driven by the combustion gas. The carbon dioxide recovery device is A duct through which air can circulate, The adsorbent is placed inside the duct and is capable of adsorbing carbon dioxide from the atmosphere and releasing the adsorbed carbon dioxide by heating with the heat transfer medium, At least one of the following fans is provided: an inlet fan located on the side of the duct where air flows in, with reference to the position of the adsorbent; and an outlet fan located on the side of the duct where air flows out, with reference to the position of the adsorbent. An electric motor for driving at least one of the aforementioned fans, It has, The power generation process is further carried out by driving an auxiliary turbine with the compressed air extracted from the gas turbine, and generating electricity with an auxiliary generator by driving the auxiliary turbine. In the recovery step or the detachment step, the electric motor is driven by the electricity generated in the power generation step. Methods for capturing carbon dioxide.

19. In the carbon dioxide recovery method according to claim 16, A charging process is performed to store the electricity generated in the aforementioned power generation process into a battery. In the recovery step or the detachment step, the device is powered by the electricity stored in the battery during the charging step. Methods for capturing carbon dioxide.

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