Carbon dioxide capture device

Abstract

To provide a carbon dioxide recovery device which achieves a target value of a recovery rate of CO2 (carbon dioxide).SOLUTION: A carbon dioxide recovery device includes: a recovery mechanism for recovering carbon dioxide contained in exhaust gas discharged from an exhaust gas source; and a control part for controlling a flow rate of the exhaust gas that is discharged from the exhaust gas source and flows into the recovery mechanism, on the basis of at least one of first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, second carbon dioxide concentration of the exhaust gas flowing in the recovery mechanism, and third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism.SELECTED DRAWING: Figure 1

Description

【Technical Field】 【0001】 The present invention relates to a carbon dioxide recovery device. 【Background Art】 【0002】 Patent Document 1 describes that "carbon dioxide in exhaust gas generated by a ship or floating structure is efficiently processed by a simple means" (abstract). Patent Document 2 describes that "exhaust gas from an internal combustion engine or the like is made CO2-free for countermeasures against global warming" (abstract). Patent Document 3 describes that "the release of CO2 from the combustion of carbonaceous fuels, most specifically fossil fuels, is a major concern due to the greenhouse effect of CO2 in the atmosphere" (paragraph 0002). Patent Document 4 describes that "CO2 in exhaust gas from a ship's engine using the cold heat of LNG is solidified, separated, captured, and stored" (abstract). [Prior Art Documents] [Patent Documents] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-024455 [Patent Document 2] Japanese Patent Application Laid-Open No. 2005-305412 [Patent Document 3] Japanese Patent Application Laid-Open No. 2013-543100 [Patent Document 4] Japanese Patent Application Laid-Open No. 2014-100696 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0003】 In a carbon dioxide recovery device, it is preferable to be able to achieve the target value of the recovery rate of CO2 (carbon dioxide). 【Means for Solving the Problems】 【0004】 In a first aspect of the present invention, a carbon dioxide recovery device is provided. The carbon dioxide recovery device includes a recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, and a control unit that controls the flow rate of exhaust gas emitted from the exhaust gas source and flowing into the recovery mechanism based on at least one of a first carbon dioxide concentration in the exhaust gas emitted from the exhaust gas source, a second carbon dioxide concentration in the exhaust gas flowing through the recovery mechanism, and a third carbon dioxide concentration in the exhaust gas flowing out of the recovery mechanism. 【0005】 The carbon dioxide recovery device may further include an inducer that draws exhaust gas emitted from the exhaust gas source into the recovery mechanism. The control unit may further control the amount of exhaust gas drawn in by the inducer based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. 【0006】 The control unit may further control the flow rate of exhaust gas attracted by the induction unit and flowing into the induction unit based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. 【0007】 The recovery mechanism may have a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit may control the flow rate of the exhaust gas that is separated by the separation unit and flows into the separation unit based on at least one of a first carbon dioxide concentration, a second carbon dioxide concentration, and a third carbon dioxide concentration. 【0008】 The control unit may control the recovery rate of carbon dioxide recovered by the recovery mechanism by controlling at least one of the flow rate of exhaust gas attracted by the induction unit and flowing into the induction unit, and the flow rate of exhaust gas flowing into the separation unit. 【0009】 The control unit may control at least one of the flow rate of exhaust gas attracted by the induction unit and flowing into the induction unit, and the flow rate of exhaust gas flowing into the separation unit, so that the recovery rate of carbon dioxide recovered by the recovery mechanism is equal to or greater than a predetermined target recovery rate. 【0010】 The control unit may control at least one of the flow rate of exhaust gas drawn in by the induction unit and flowing into the induction unit, and the flow rate of exhaust gas flowing into the separation unit, based on the deviation between the ratio of the first carbon dioxide concentration to the third carbon dioxide concentration and the target recovery rate, or the deviation between the ratio of the first carbon dioxide concentration to the second carbon dioxide concentration and the target recovery rate. 【0011】 The control unit may control the pressure of the exhaust gas flowing through the recovery mechanism by controlling at least one of the flow rate of exhaust gas attracted by the induction machine and flowing into the induction machine, and the flow rate of exhaust gas flowing into the separation unit. 【0012】 The control unit may control fluctuations in exhaust gas pressure based on fluctuations in the load of the exhaust gas source by controlling at least one of the flow rate of exhaust gas drawn in by the induction unit and the flow rate of exhaust gas flowing into the separation unit. 【0013】 The control unit may control the flow rate of exhaust gas flowing into the separation unit if the fluctuation in exhaust gas pressure is within a predetermined range. 【0014】 The control unit may control the flow rate of exhaust gas that is drawn in by the induction device and flows into the induction device if the fluctuation in exhaust gas pressure is not within the fluctuation range. 【0015】 The control unit may control the flow rate of exhaust gas flowing into the induction machine so that the pressure of the exhaust gas discharged from the exhaust gas source is greater than the pressure of the exhaust gas flowing through the recovery mechanism. 【0016】 The carbon dioxide recovery device may further include a processing unit that removes heat from the exhaust gas emitted from the exhaust gas source or removes impurities contained in the exhaust gas emitted from the exhaust gas source. The control unit may control the flow rate of the exhaust gas emitted from the exhaust gas source and passing through the processing unit by controlling the flow rate of the exhaust gas drawn in by the induction unit or by controlling the amount of exhaust gas drawn in by the induction unit. 【0017】 When the control unit controls so that the exhaust gas discharged from the exhaust gas source does not flow into the recovery mechanism and controls the attracting machine so as not to attract the exhaust gas, the control unit may control the flow rate of the exhaust gas attracted by the attracting machine flowing into the attracting machine. 【0018】 The control unit may further control the flow rate of the exhaust gas in which at least a part of carbon dioxide is separated by the separation unit flowing into the separation unit. 【0019】 The control unit may control the flow rate of each exhaust gas discharged from each of the plurality of exhaust gas sources and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. 【0020】 Each exhaust gas discharged from the plurality of exhaust gas sources may be attracted by a common attracting machine. 【0021】 The control unit may control whether the attracting machine attracts the first exhaust gas, the second exhaust gas, or both the first exhaust gas and the second exhaust gas based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. 【0022】 The control unit may control the flow rate of the exhaust gas so that the exhaust gas discharged from the exhaust gas source does not flow into the recovery mechanism for a predetermined time after the exhaust gas source is started. 【0023】 In a second aspect of the present invention, a carbon dioxide recovery device is provided. The carbon dioxide recovery device includes a recovery mechanism that recovers carbon dioxide contained in the exhaust gas discharged from each of the plurality of exhaust gas sources, and a control unit that controls the flow rate of each exhaust gas discharged from each of the plurality of exhaust gas sources and flowing into the recovery mechanism. 【0024】 The carbon dioxide recovery device may further include an attracting machine that attracts the exhaust gas discharged from the plurality of exhaust gas sources to the recovery mechanism. The control unit may further control the attracting amount of the exhaust gas attracted by the attracting machine based on the flow rate of each exhaust gas flowing into the recovery mechanism. 【0025】 Each exhaust gas may be drawn by a common inducer. 【0026】 The control unit may further control the flow rate of the exhaust gas drawn by the inducer and flowing into the inducer based on the flow rate of each exhaust gas flowing into the recovery mechanism. 【0027】 The recovery mechanism may have a separation unit that separates at least a part of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit may control the flow rate of the exhaust gas flowing into the separation unit in which at least a part of the carbon dioxide is separated by the separation unit based on the flow rate of each exhaust gas flowing into the recovery mechanism. 【0028】 The control unit may control the recovery rate of carbon dioxide recovered by the recovery mechanism by controlling at least one of the flow rate of each exhaust gas flowing into the recovery mechanism, the flow rate of the exhaust gas drawn by the inducer and flowing into the inducer, and the flow rate of the exhaust gas flowing into the separation unit. 【0029】 The control unit may control at least one of the flow rate of each exhaust gas flowing into the recovery mechanism, the flow rate of the exhaust gas drawn by the inducer and flowing into the inducer, and the flow rate of the exhaust gas flowing into the separation unit so that the recovery rate of carbon dioxide recovered by the recovery mechanism is not less than a predetermined target recovery rate. 【0030】 The control unit may control the pressure of the exhaust gas flowing through the recovery mechanism by controlling at least one of the flow rate of each exhaust gas flowing into the recovery mechanism, the flow rate of the exhaust gas drawn by the inducer and flowing into the inducer, and the flow rate of the exhaust gas flowing into the separation unit. 【0031】 The control unit may control the fluctuation of the pressure of the exhaust gas based on the fluctuation of the loads of a plurality of exhaust gas sources by controlling at least one of the flow rate of each exhaust gas flowing into the recovery mechanism, the flow rate of the exhaust gas drawn by the inducer and flowing into the inducer, and the flow rate of the exhaust gas flowing into the separation unit. 【0032】 The control unit may control the flow rate of exhaust gas flowing into the separation unit if the fluctuation in exhaust gas pressure is within a predetermined range. 【0033】 The control unit may control the flow rate of each exhaust gas flowing into the recovery mechanism, or the flow rate of exhaust gas drawn in by the induction machine and flowing into the induction machine, if the fluctuation in exhaust gas pressure is not within the fluctuation range. 【0034】 The control unit may control the flow rate of each exhaust gas flowing into the recovery mechanism, or the flow rate of exhaust gas flowing into the induction machine, so that the pressure of each exhaust gas discharged from multiple exhaust gas sources is greater than the pressure of the exhaust gas flowing through the recovery mechanism. 【0035】 The carbon dioxide recovery device may further include a processing unit that removes heat from exhaust gases emitted from multiple exhaust gas sources or removes impurities contained in the exhaust gases emitted from multiple exhaust gas sources. The control unit may control the flow rate of the exhaust gases emitted from multiple exhaust gas sources and passing through the processing unit by controlling the flow rate of each exhaust gas flowing into the recovery mechanism, controlling the flow rate of exhaust gases drawn in by an induction device and flowing into the induction device, or controlling the amount of exhaust gas drawn in by the induction device. 【0036】 The control unit may control the flow rate of each exhaust gas discharged from multiple exhaust gas sources and flowing into the recovery mechanism based on at least one of the following: the first carbon dioxide concentration of the exhaust gas discharged from multiple exhaust gas sources, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism. 【0037】 The control unit may control at least one of the following based on the deviation between the ratio of the first carbon dioxide concentration to the third carbon dioxide concentration and a predetermined target recovery rate of carbon dioxide, or the deviation between the ratio of the first carbon dioxide concentration to the second carbon dioxide concentration and the target recovery rate: the flow rate of each exhaust gas flowing into the recovery mechanism, the flow rate of exhaust gas drawn in by the induction machine and flowing into the induction machine, and the flow rate of exhaust gas flowing into the separation unit. 【0038】 The control unit may control whether the induction device induces the first exhaust gas, the first and second exhaust gases, or the second exhaust gas, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. 【0039】 When the control unit controls the exhaust gas discharged from multiple exhaust gas sources so that it does not flow into the recovery mechanism, and also controls the induction machine so that it does not induce exhaust gas, the control unit may control the flow rate of the exhaust gas induced by the induction machine into the induction machine. 【0040】 The control unit may further control the flow rate of the exhaust gas, from which at least a portion of the carbon dioxide has been separated by the separation unit, into the separation unit. 【0041】 The control unit may control the flow rate of exhaust gases so that, for a predetermined time after at least one of the multiple exhaust gas sources is activated, the exhaust gases discharged from each of the multiple exhaust gas sources do not flow into the recovery mechanism. 【0042】 It should be noted that the above summary of the invention does not enumerate all of its features. Furthermore, subcombinations of these features may also constitute an invention. [Brief explanation of the drawing] 【0043】 [Figure 1] This figure shows an example of a carbon dioxide recovery device 100 according to one embodiment of the present invention. [Figure 2] This is an enlarged view of the vicinity of the exhaust gas source 12 and valve 30 in Figure 1. [Figure 3] This flowchart shows an example of a carbon dioxide recovery method according to one embodiment of the present invention. [Figure 4] This figure shows an example of the relationship between the measurement of the recovery rate η, the deviation from the recovery rate SV, and the opening degree of valve 34. [Figure 5]This figure shows an example of the relationship between the deviation between the measured recovery rate η and the recovery rate SV, and the rotational speed of the induction blower, when the induction device 42 is an induction blower. [Figure 6] This block diagram shows an example of a method for controlling the recovery rate η in a carbon dioxide recovery device 100 according to one embodiment of the present invention. [Figure 7] This figure shows an example of a method for calculating the recovery rate η in a carbon dioxide recovery device 100 according to one embodiment of the present invention. [Figure 8] This figure shows an example of the CO2 (carbon dioxide) recovery rate η or branching rate η at each of the controlled objects 110, and the CO2 (carbon dioxide) recovery rate η at the outlet end 19 of the carbon dioxide recovery device 100. [Figure 9] This figure shows an example of a computer 2200 in which a carbon dioxide recovery device 100 according to one embodiment of the present invention may be fully or partially embodied. [Modes for carrying out the invention] 【0044】 The present invention will be described below through embodiments of the invention, but these embodiments are not intended to limit the invention as defined in the claims. Furthermore, not all combinations of features described in the embodiments are necessarily essential to the solution of the invention. 【0045】 Figure 1 shows an example of a carbon dioxide recovery device 100 according to one embodiment of the present invention. The carbon dioxide recovery device 100 comprises a recovery mechanism 10 and a control unit 40. In Figure 1, the area of ​​the recovery mechanism 10 is indicated by a thick dashed line. 【0046】 The recovery mechanism 10 recovers CO2 (carbon dioxide) contained in the exhaust gas 14. The exhaust gas 14 is emitted from the exhaust gas source 12. The recovery mechanism 10 may recover CO2 (carbon dioxide) contained in the exhaust gas 14 emitted from each of the multiple exhaust gas sources 12. In this example, the recovery mechanism 10 recovers CO2 (carbon dioxide) contained in the exhaust gas 14 emitted from each of the two exhaust gas sources 12 (exhaust gas source 12-1 and exhaust gas source 12-2). 【0047】 The exhaust gas source 12 is, for example, an engine. When the carbon dioxide recovery device 100 is installed on a ship, the exhaust gas source 12-1 may be the main engine, and the exhaust gas source 12-2 may be an auxiliary engine. The main engine is mainly operated when the ship is underway. The auxiliary engine is mainly operated when the ship is at anchor. The output of the main engine is, for example, 10 times that of the auxiliary engine. The exhaust gas 14 discharged from the exhaust gas source 12-1 is denoted as exhaust gas 14-1. The exhaust gas 14 discharged from the exhaust gas source 12-2 is denoted as exhaust gas 14-2. 【0048】 The control unit 40 controls the flow rate of exhaust gas 14 that flows into the recovery mechanism 10. The control unit 40 may control the flow rate of each exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 that flows into the recovery mechanism 10. 【0049】 The control unit 40 may be a PLC (Programmable Logic Controller) or a CPU (Central Processing Unit). The carbon dioxide capture device 100 may be a computer equipped with the PLC or CPU. 【0050】 The exhaust gas emitted from the exhaust gas source 12 passes through the recovery mechanism 10 and then flows out of the recovery mechanism 10. The exhaust gas emitted from the exhaust gas source 12 is referred to as exhaust gas 14. The exhaust gas that passes through the recovery mechanism 10 is referred to as exhaust gas 15. The exhaust gas that flows out of the recovery mechanism 10 is referred to as exhaust gas 17. The outlet where exhaust gas 15 flows out of the recovery mechanism 10 is referred to as the outlet end 19 of the carbon dioxide recovery device 100. 【0051】 The CO2 (carbon dioxide) concentration of exhaust gas 14 is defined as the first CO2 (carbon dioxide) concentration. The CO2 (carbon dioxide) concentration of exhaust gas 15 is defined as the second CO2 (carbon dioxide) concentration. The CO2 (carbon dioxide) concentration of exhaust gas 17 is defined as the third CO2 (carbon dioxide) concentration. In this specification, the first CO2 (carbon dioxide) concentration, the second CO2 (carbon dioxide) concentration, and the third CO2 (carbon dioxide) concentration are denoted as concentration D1, concentration D2, and concentration D3, respectively. 【0052】 The carbon dioxide recovery device 100 may be equipped with one or more CO2 (carbon dioxide) sensors 20. In this example, the carbon dioxide recovery device 100 is equipped with six CO2 (carbon dioxide) sensors 20 (CO2 (carbon dioxide) sensors 20-1 to CO2 (carbon dioxide) sensors 20-6). CO2 (carbon dioxide) sensors 20-1 and 20-2 measure the CO2 (carbon dioxide) concentration (i.e., concentration D1) of the exhaust gas 14. CO2 (carbon dioxide) sensor 20-3 measures the CO2 (carbon dioxide) concentration (i.e., concentration D2) of the exhaust gas 15. CO2 (carbon dioxide) sensor 20-4 measures the CO2 (carbon dioxide) concentration (i.e., concentration D3) of the exhaust gas 17. CO2 (carbon dioxide) sensor 20-5 measures the concentration of CO2 (carbon dioxide) that has been processed by the processing unit 46 (described later) and flows into the recovery mechanism 10. The CO2 (carbon dioxide) sensor 20-6 measures the concentration of CO2 (carbon dioxide) that is concentrated by the concentrator 48 (described later) and flows into the separation unit 44 (described later). 【0053】 The carbon dioxide recovery device 100 may include a valve 30, an induction device 42, another valve 32, a processing unit 46, and a discharge end 16. The valve 30 switches whether or not exhaust gas 14 flows into the recovery mechanism 10, or adjusts the flow rate of exhaust gas 14 into the recovery mechanism 10. The carbon dioxide recovery device 100 may include multiple valves 30. In this example, the carbon dioxide recovery device 100 includes two valves 30 (valve 30-1 and valve 30-2). 【0054】 The induction device 42 induces the exhaust gas 14 into the recovery mechanism 10. The induction device 42 may induce the exhaust gas 14 discharged from multiple exhaust gas sources 12 into the recovery mechanism 10. Each of the exhaust gases 14 discharged from multiple exhaust gas sources 12 may be induced by a common induction device 42. The induction device 42 may be a so-called induction blower. 【0055】 Valve 32 adjusts the flow rate of exhaust gas 14 that is drawn in by the induction device 42 and flows into the induction device 42. In other words, valve 32 adjusts the flow rate of exhaust gas 14 drawn in by the induction device 42 that is fed back to the induction device 42. 【0056】 The processing unit 46 removes heat from the exhaust gas 14 discharged from the exhaust gas source 12, or removes impurities contained in the exhaust gas 14 discharged from the exhaust gas source 12. These impurities include, for example, sulfur oxides (SOx) or nitrogen oxides (NOx). The processing unit 46 also performs pretreatment of the exhaust gas 14 before it flows into the recovery mechanism 10. The processing unit 46 is, for example, an economizer. 【0057】 The carbon dioxide recovery device 100 may have one or more discharge ends 16. The discharge end 16 is the end from which at least a portion of the exhaust gas 14 is discharged from the carbon dioxide recovery device 100. In this example, the carbon dioxide recovery device 100 has two discharge ends 16 (discharge end 16-1 and discharge end 16-2). In this example, exhaust gas 14-1 is discharged from discharge end 16-1, and exhaust gas 14-2 is discharged from discharge end 16-2. 【0058】 The carbon dioxide recovery device 100 may be equipped with one or more flow sensors 24. The carbon dioxide recovery device 100 in this example is equipped with two flow sensors 24 (flow sensor 24-1 and flow sensor 24-2). The flow rate of the exhaust gas 14 flowing into the recovery mechanism 10 is denoted as flow rate F1. Flow sensor 24-1 measures flow rate F1. Flow rate F1 may be the volume of exhaust gas 14 flowing per unit time. The flow rate F1 of the exhaust gas 14-1 discharged from the exhaust gas source 12-1 is denoted as flow rate F1-1. The flow rate F1 of the exhaust gas 14-2 discharged from the exhaust gas source 12-2 is denoted as flow rate F1-2. The flow rate of the exhaust gas 15 is denoted as flow rate F2. Flow sensor 24-2 measures flow rate F2. Flow rate F2 may be the volume of exhaust gas 15 flowing per unit time. 【0059】 The carbon dioxide recovery device 100 may be equipped with one or more rotation speed measuring sensors 28. In this example, the carbon dioxide recovery device 100 is equipped with two rotation speed measuring sensors 28 (rotation speed measuring sensor 28-1 and rotation speed measuring sensor 28-2). The rotation speed measuring sensors 28 measure the rotation speed of the exhaust gas source 12. This rotation speed is denoted as rotation speed R. In this example, rotation speed measuring sensor 28-1 measures the rotation speed of the exhaust gas source 12-1, and rotation speed measuring sensor 28-2 measures the rotation speed of the exhaust gas source 12-2. The rotation speed R of the exhaust gas source 12-1 is denoted as rotation speed R1. The rotation speed R of the exhaust gas source 12-2 is denoted as rotation speed R2. 【0060】 The control unit 40 controls the flow rate F1 of the exhaust gas 14 based on at least one of the concentrations D1, D2, and D2. When the exhaust gas source 12 is a ship's engine, the target is to reduce the CO2 (carbon dioxide) concentration of the exhaust gas 14 emitted from the ship's engine by 30% by 2025 compared to 2013 (as of 2021). In the carbon dioxide recovery device 100, the flow rate F1 of the exhaust gas 14 is controlled based on at least one of the concentrations D1, D2, and D2. Therefore, the carbon dioxide recovery device 100 can more easily achieve the target value for the recovery rate of CO2 (carbon dioxide) contained in the exhaust gas 14. Note that concentration D1 may be measured by CO2 (carbon dioxide) sensors 20-1 and 20-2, and may also be the CO2 (carbon dioxide) emission concentration according to the specifications (so-called specs) of the exhaust gas source 12. 【0061】 The control unit 40 may control the flow rate F1 of the exhaust gas 14 by controlling at least one of the valve 30 and the induction device 42. The control unit 40 may control the flow rate of the exhaust gas 14 flowing into the induction device 42 by controlling each of the valves 30. The control unit 40 may control the flow rates F1-1 and F1-2, respectively, by controlling valves 30-1 and 30-2. 【0062】 The control unit 40 may control the amount of exhaust gas 14 drawn by the induction device 42 based on at least one of concentrations D1, D2, and D3. The control unit 40 may control the flow rate F1 of the exhaust gas 14 by controlling the amount of exhaust gas 14 drawn by the induction device 42. The control unit 40 may also control the amount of exhaust gas 14 drawn by the induction device 42 based on the rotational speed R of the exhaust gas source 12. 【0063】 If there are multiple exhaust gas sources 12, the control unit 40 may control the amount of exhaust gas 14 drawn by the induction device 42 based on the flow rate F1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10. The control unit 40 may control the amount of exhaust gas 14 drawn by controlling the valve 30. If the induction device 42 is an induction blower, the amount of exhaust gas 14 drawn tends to be proportional to the rotation speed of the induction blower. For this reason, the control unit 40 may control the amount of exhaust gas 14 drawn by controlling the rotation speed. The control unit 40 may control the amount of exhaust gas 14 drawn by the induction device 42 by controlling valves 30-1 and 30-2. 【0064】 The control unit 40 may control the flow rate of the exhaust gas 14 attracted by the induction unit 42 and flowing into the induction unit 42 based on at least one of the concentrations D1, D2, and D3. The exhaust gas 14 attracted by the induction unit 42 and flowing into the induction unit 42 refers to the exhaust gas 14 that flows back into the induction unit 42 after at least a portion of it has been fed back. This makes it easier for the carbon dioxide recovery device 100 to achieve the target value for the recovery rate of CO2 (carbon dioxide) contained in the exhaust gas 14. The flow rate of the exhaust gas 14 attracted by the induction unit 42 and flowing into the induction unit 42 is denoted as flow rate F1'. The control unit 40 may control the flow rate F1' based on the rotation speed R of the exhaust gas source 12. 【0065】 The control unit 40 may control the flow rate F1' by controlling the valve 32. If there are multiple exhaust gas sources 12, the control unit 40 may control the flow rate F1' based on the flow rate F1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10. The control unit 40 may control the flow rate F1' by controlling the valve 30. 【0066】 The recovery mechanism 10 may include a concentrator 48, one or more compressors 13, a valve 34, a separation unit 44, and a storage / desorption unit 45. In this example, the recovery mechanism 10 has two compressors 13 (compressor 13-1 and compressor 13-2). The concentrator 48 concentrates the CO2 (carbon dioxide) contained in the exhaust gas 14. Compressor 13-1 compresses the CO2 (carbon dioxide) concentrated by the concentrator 48. 【0067】 The separation unit 44 separates at least a portion of the CO2 (carbon dioxide) contained in the exhaust gas 15 flowing through the recovery mechanism 10 from the exhaust gas 15. The separation unit 44 is, for example, a CO2 (carbon dioxide) separation membrane made of polymer. The diameter of the pores of the CO2 (carbon dioxide) separation membrane is larger than that of the CO2 (carbon dioxide) molecule. Therefore, the CO2 (carbon dioxide) separation membrane can separate the gas introduced into the separation membrane into a gas mainly composed of CO2 (carbon dioxide) and a gas from which at least a portion of the CO2 (carbon dioxide) has been removed. 【0068】 Exhaust gas 15, whose main component is CO2 (carbon dioxide), is designated as exhaust gas 15-1. Exhaust gas 15 from which at least a portion of CO2 (carbon dioxide) has been removed by the separation unit 44 is designated as exhaust gas 15-2. In this example, exhaust gas 15-1 is introduced into the compressor 13-2, and exhaust gas 15-2 is introduced into the valve 34. 【0069】 The control unit 40 may control the flow rate F2 of the exhaust gas 15 that flows into the separation unit 44 after at least a portion of the CO2 (carbon dioxide) has been separated by the separation unit 44, based on at least one of the concentrations D1, D2, and D3. The exhaust gas 15 that flows into the separation unit 44 after at least a portion of the CO2 (carbon dioxide) has been separated by the separation unit 44 refers to the exhaust gas 15 that flows back into the separation unit 44 after exhaust gas 15-2 has been fed back. This makes it easier for the carbon dioxide recovery device 100 to achieve the target value of the CO2 (carbon dioxide) recovery rate contained in the exhaust gas 14. The flow rate F2 of the exhaust gas 15-2 is denoted as flow rate F2-1. The control unit 40 may control the flow rate F2-1 based on the rotational speed R of the exhaust gas source 12. 【0070】 The control unit 40 may control the flow rate F2-1 by controlling the valve 34. If there are multiple exhaust gas sources 12, the control unit 40 may control the flow rate F2-1 based on the flow rate F1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10. The control unit 40 may control the flow rate F1 by controlling the valve 30. 【0071】 The control unit 40 may control the recovery rate of CO2 (carbon dioxide) recovered by the recovery mechanism 10 by controlling at least one of the flow rates F1' and F2-1. This makes it easier for the carbon dioxide recovery device 100 to continuously recover CO2 (carbon dioxide) contained in the exhaust gas 14. This makes it easier for the carbon dioxide recovery device 100 to achieve the target value for the recovery rate of CO2 (carbon dioxide) contained in the exhaust gas 14. The recovery rate of CO2 (carbon dioxide) recovered by the recovery mechanism 10 is denoted as the recovery rate η. 【0072】 If there are multiple exhaust gas sources 12, the control unit 40 may control the recovery rate η by controlling at least one of the flow rates F1, F1', and F2-1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10. This makes it easier for the carbon dioxide recovery device 100 to continuously recover CO2 (carbon dioxide) contained in the exhaust gas 14. The control unit 40 may control the recovery rate η by controlling the valve 30. 【0073】 The control unit 40 may control at least one of the flow rates F1' and F2-1 so that the recovery rate η is equal to or greater than a predetermined target recovery rate. The target recovery rate is denoted as recovery rate SV. Recovery rate SV refers to the ratio of concentration D3 to concentration D1 (i.e., concentration D3 / concentration D1). If there are multiple exhaust gas sources 12, the control unit 40 may control at least one of the flow rates (in this example, flow rates F1-1 and F1-2), flow rate F1', and flow rate F2-1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10 so that the recovery rate η is equal to or greater than recovery rate SV. 【0074】 The control unit 40 may control at least one of the flow rates F1' and F2-1 based on the deviation between the ratio of concentration D1 to concentration D3 and the recovery rate SV, or the deviation between the ratio of concentration D1 to concentration D2 and the recovery rate SV. The ratio of concentration D1 to concentration D3 refers to the ratio of concentration D3 to concentration D1 (i.e., concentration D3 / concentration D1). Concentration D3 / concentration D1 is the measured value of the recovery rate η. The ratio of concentration D1 to concentration D2 may refer to the ratio of concentration D2 to concentration D1 (i.e., concentration D2 / concentration D1). This makes it easier for the carbon dioxide recovery device 100 to achieve the recovery rate SV. The deviation between the ratio of concentration D1 to concentration D3 and the recovery rate SV may refer to the difference between the ratio of concentration D1 to concentration D3 and the recovery rate SV. The deviation between the ratio of concentration D1 to concentration D2 and the recovery rate SV may refer to the difference between the ratio of concentration D1 to concentration D2 and the recovery rate SV. 【0075】 If there are multiple exhaust gas sources 12, the control unit 40 may control at least one of the flow rates (in this example, flow rates F1-1 and F1-2), flow rate F1', and flow rate F2-1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10, based on the deviation between the ratio of concentration D1 and concentration D3 and the recovery rate SV, or the deviation between the ratio of concentration D1 and concentration D2 and the recovery rate SV. 【0076】 Let the pressure of the exhaust gas 14 discharged from the exhaust gas source 12 be pressure P1. Let the pressure P1 of exhaust gas 14-1 be pressure P1-1. Let the pressure P1 of exhaust gas 14-2 be pressure P1-2. Let the pressure of exhaust gas 15 be pressure P2. Let the pressure P2 of exhaust gas 15 compressed by the compressor 13-1 be pressure P2-1. Let the pressure P2 of exhaust gas 15 compressed by the compressor 13-2 be pressure P2-2. 【0077】 The carbon dioxide capture device 100 may be equipped with one or more pressure sensors 22. In this example, the carbon dioxide capture device 100 is equipped with four pressure sensors 22 (pressure sensors 22-1 to 22-4). Pressure sensor 22-1 measures pressure P1-1. Pressure sensor 22-2 measures pressure P2-2. Pressure sensor 22-3 measures pressure P2-1. Pressure sensor 22-4 measures pressure P2-2. 【0078】 The control unit 40 may control the pressure P2 by controlling at least one of the flow rates F1' and F2-1. When the exhaust gas source 12 is a ship's engine, the load on the exhaust gas source 12 is prone to fluctuations during the ship's operation. In sea trials of ships, the engine load is prone to fluctuations due to a sudden clutch operation from full forward speed to reverse, known as a crash astern test. When a ship is equipped with a variable-pitch propeller, the engine load is prone to fluctuations due to abrupt changes in the blade angle directly connected to the propeller. When a ship is equipped with a shaft generator system and a load is instantaneously applied to the shaft generator system, the engine load is prone to fluctuations. When a ship encounters rough weather while underway, the engine load is prone to fluctuations. When the load on the exhaust gas source 12 fluctuates, the pressure P2 is prone to change. When the pressure P2 changes, the recovery rate η is prone to change. The control unit 40 may control the recovery rate η by controlling the pressure P2. This makes it easier for the carbon dioxide recovery device 100 to achieve a recovery rate SV. 【0079】 If there are multiple exhaust gas sources 12, the control unit 40 may control the pressure P2 by controlling at least one of the flow rates (in this example, flow rates F1-1 and F1-2), flow rate F1', and flow rate F2-1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10. The control unit 40 may also control the pressure P2 by controlling the valve 30. 【0080】 The control unit 40 may control fluctuations in pressure P1 or pressure P2 based on fluctuations in the load of the exhaust gas source 12 by controlling at least one of the flow rates F1' and F2-1. The fluctuations in the load of the exhaust gas source 12 may be the difference between the maximum and minimum load values ​​over a predetermined period, or the ratio of the minimum value to the maximum value. The control unit 40 may control at least one of the flow rates F1' and F2-1 to reduce fluctuations in pressure P1 or pressure P2. 【0081】 If there are multiple exhaust gas sources 12, the control unit 40 may control fluctuations in pressure P1 or pressure P2 based on fluctuations in the load of the multiple exhaust gas sources 12 by controlling at least one of the flow rates (in this example, flow rates F1-1 and F1-2), flow rate F1', and flow rate F2-1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10. The control unit 40 may control fluctuations in pressure P1 or pressure P2 by controlling the valve 30. The control unit 40 may control at least one of the flow rates, flow rate F1', and flow rate F2-1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 in order to reduce fluctuations in pressure P1 or pressure P2. 【0082】 The control unit 40 may control the flow rate F2-1 if the fluctuation of pressure P1 or pressure P2 is within a predetermined fluctuation range. The control unit 40 does not need to control the flow rate F1' if the fluctuation of pressure P1 or pressure P2 is within the said fluctuation range. The tracking ability of the recovery rate η in response to the time change of flow rate F2-1 is higher than the tracking ability of the recovery rate η in response to the time change of flow rate F1'. For this reason, it is preferable for the control unit 40 to control the flow rate F2-1 if the fluctuation of pressure P1 or pressure P2 is within a predetermined fluctuation range. 【0083】 The control unit 40 may control the flow rate F1' and not control F2-1 if the fluctuation of pressure P1 or pressure P2 is not within a predetermined fluctuation range. If the fluctuation of pressure P1 or pressure P2 is not within the said fluctuation range and there are multiple exhaust gas sources 12, the control unit 40 may control the flow rate of each exhaust gas 14 discharged from each of the multiple exhaust gas sources 12, or the flow rate F1'. 【0084】 The control unit 40 may control the flow rate F1' such that the pressure P1 of the exhaust gas 14 discharged from the exhaust gas source 12 is greater than the pressure P2 of the exhaust gas 15 flowing through the recovery mechanism 10. This makes it easier for the carbon dioxide recovery device 100 to suppress the backflow of exhaust gas 14 from the recovery mechanism 10 to the exhaust gas source 12. If there are multiple exhaust gas sources 12, the control unit 40 may control the flow rates (flow rates F1-1 and F1-2 in this example) or flow rates F1' of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 such that the respective pressures P1 (pressures P1-1 and P1-2 in this example) of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10 are greater than the pressure P2 of the exhaust gas 15 flowing through the recovery mechanism 10. 【0085】 The control unit 40 may control the flow velocity of the exhaust gas 14 passing through the processing unit 46 by controlling the flow rate F1' or by controlling the amount of exhaust gas 14 drawn in by the induction device 42. If the processing unit 46 contains an adsorbent, it is preferable that the flow velocity of the exhaust gas 14 passing through the processing unit 46 is equal to or greater than a predetermined flow velocity. The control unit 40 may control the flow rate F1' or the amount of exhaust gas 14 drawn in by the induction device 42 so that the flow velocity of the exhaust gas 14 passing through the processing unit 46 is equal to or greater than the predetermined flow velocity. 【0086】 If there are multiple exhaust gas sources 12, the control unit 40 may control the flow rate of the exhaust gas 14 passing through the processing unit 46 by controlling the respective flow rates (in this example, flow rates F1-1 and F1-2) of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10, or by controlling the flow rate F1', or by controlling the amount of exhaust gas 14 drawn in by the induction device 42. The control unit 40 may also control the flow rate of the exhaust gas 14 passing through the processing unit 46 by controlling the valve 30. 【0087】 When the control unit 40 controls the exhaust gas 14 discharged from the exhaust gas source 12 so that it does not flow into the recovery mechanism 10, and also controls the induction device 42 so that it does not induce the exhaust gas 14, the control unit 40 may control the flow rate of the exhaust gas 14 induced by the induction device 42 into the induction device 42. When the control unit 40 controls the exhaust gas 14 discharged from the exhaust gas source 12 so that it does not flow into the recovery mechanism 10, it means that the control unit 40 controls the valve 30 to close. When the control unit 40 controls the induction device 42 so that it does not induce the exhaust gas 14, it means that the control unit 40 controls the flow rate of the exhaust gas 14 fed back to the induction device 42 by opening the valve 32. When the control unit 40 controls the flow rate of the exhaust gas 14 induced by the induction device 42 into the induction device 42, it means that the control unit 40 controls the flow rate of the exhaust gas 14 fed back to the induction device 42 by opening the valve 32. This makes it easier to avoid failures of the induction device 42 and the compressor 13, even when the valve 30 is closed and the induction device 42 is turned off. 【0088】 If the control unit 40 controls the exhaust gas 14 discharged from the exhaust gas source 12 so that it does not flow into the recovery mechanism 10, and also controls the induction machine 42 so as not to induce the exhaust gas 14, the control unit 40 may further control the flow rate F2-1 of the exhaust gas 15-2. The control unit 40 may control the flow rate F2-1 by controlling the valve 34. This makes it even easier to avoid failures of the induction machine 42 and the compressor 13, even when the valve 30 is closed and the induction machine 42 is turned off. 【0089】 The control unit 40 may control the flow rate F1 of the exhaust gas 14 flowing into the recovery mechanism 10 by controlling the valve 30. The concentration D1 of exhaust gas 14-1 is denoted as concentration D1-1. The concentration D1 of exhaust gas 14-2 is denoted as concentration D1-2. If there are multiple exhaust gas sources 12, the control unit 40 may control the flow rate F1 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12 and flowing into the recovery mechanism 10 based on at least one of the concentrations D1 (concentrations D1-1 and D1-2 in this example), concentrations D2, and concentrations D3 of the exhaust gas 14 discharged from each of the multiple exhaust gas sources 12. 【0090】 The control unit 40 (see Figure 1) may control whether the induction device 42 induces exhaust gas 14-1, exhaust gas 14-2, or exhaust gases 14-1 and 14-2, based on at least one of concentrations D1, D2, and D3. When exhaust gas source 12-1 is the ship's main engine and exhaust gas source 12-2 is the ship's auxiliary engine, the output of the main engine may be 10 times or more the output of the auxiliary engine. For this reason, the amount of CO2 (carbon dioxide) emitted by the main engine per unit time tends to be greater than the amount of CO2 (carbon dioxide) emitted by the auxiliary engine per unit time. 【0091】 In this example, the control unit 40 controls whether to induce exhaust gas 14-1, exhaust gas 14-2, or exhaust gas 14-1 and exhaust gas 14-2, based on at least one of concentrations D1, D2, and D3. This makes it easier for the carbon dioxide recovery device 100 to control the recovery rate η while taking into account the difference between the output of the main engine and the output of the auxiliary engine. 【0092】 The control unit 40 may control whether the induction device 42 induces exhaust gas 14-1, exhaust gas 14-2, or both exhaust gas 14-1 and exhaust gas 14-2 by controlling valves 30-1 and 30-2. This makes it easier for the carbon dioxide recovery device 100 to continuously recover CO2 (carbon dioxide) while meeting the recovery rate SV (target recovery rate), even when the output of the main engine is, for example, 10 times or more the output of the auxiliary engine. 【0093】 The control unit 40 may control the induction device 42 to induce exhaust gas 14-1 but not exhaust gas 14-2 when the concentration D1-1 is higher than the concentration D1-2. The control unit 40 may control the induction device 42 to induce exhaust gas 14-1 but not exhaust gas 14-2 by controlling valve 30-1 to open and valve 30-2 to close when the concentration D1-1 is higher than the concentration D1-2. This makes it easier to improve the recovery rate η. 【0094】 The control unit 40 may control the induction device 42 to induce exhaust gas 14-2 and not exhaust gas 14-1 when the concentration D1-2 is higher than the concentration D1-1. The control unit 40 may control the induction device 42 to induce exhaust gas 14-2 and not exhaust gas 14-1 by controlling valve 30-2 to open and valve 30-1 to close when the concentration D1-2 is higher than the concentration D1-1. This makes it easier to improve the recovery rate η. 【0095】 The control unit 40 may control the flow rate of exhaust gas 14 so that the exhaust gas 14 discharged by the exhaust gas source 12 does not flow into the recovery mechanism 10 for a predetermined time after the exhaust gas source 12 is started. The control unit 40 may control the flow of exhaust gas 14 into the recovery mechanism 10 by closing the valve 30 or turning off the induction fan 42. For a predetermined time after the exhaust gas source 12 is started, the amount of impurities such as oil, soot, heavy metals, and dust contained in the exhaust gas 14 tends to be higher compared to after that time has elapsed. Therefore, by controlling the flow of exhaust gas 14 into the recovery mechanism 10, the carbon dioxide recovery device 100 can more easily suppress the deterioration of the performance of the concentrator 48 and the separation unit 44. 【0096】 Figure 2 is an enlarged view of the vicinity of the exhaust gas source 12 and valve 30 in Figure 1. In this example, exhaust gas source 12-1 and valve 30-1 are connected by a first exhaust gas pipe 50, and exhaust gas source 12-2 and valve 30-2 are connected by a second exhaust gas pipe 52. Exhaust gas 14-1 passes through the first exhaust gas pipe 50. Exhaust gas 14-2 passes through the second exhaust gas pipe 52. Let the diameter of the first exhaust gas pipe 50 be diameter d1. Let the diameter of the second exhaust gas pipe 52 be diameter d2. Diameter d1 may be larger than diameter d2. 【0097】 The induction device 42 may induce exhaust gas 14-1. When the induction device 42 induces exhaust gas 14-1, it does not need to induce exhaust gas 14-2. Since diameter d1 is larger than diameter d2, the induction device 42 is more likely to induce exhaust gas 14-1 than exhaust gas 14-2. The control unit 40 may control the induction device 42 to induce exhaust gas 14-1 and not exhaust gas 14-2 by controlling valve 30-1 to open and valve 30-2 to close. 【0098】 Figure 3 is a flowchart showing an example of a carbon dioxide recovery method according to one embodiment of the present invention. The carbon dioxide recovery method in this example will be explained using the carbon dioxide recovery device 100 as an example. The calculation step S100 is a step in which the control unit 40 calculates the deviation between the measured value of the recovery rate η and the recovery rate SV (target recovery rate). The determination step S102 is a step in which the control unit 40 determines the relationship between the measured value of the recovery rate η and the recovery rate SV. If the measured value of the recovery rate η is equal to or less than the recovery rate SV, the carbon dioxide recovery method proceeds to the control step S104. If the measured value of the recovery rate η is greater than the recovery rate SV, the carbon dioxide recovery method proceeds to the control step S106. 【0099】 Control step S104 is a step in which the control unit 40 controls the flow rate F2-1. Control step S104 may be a step in which the control unit 40 controls the flow rate F2-1 by controlling the opening degree of the valve 34. 【0100】 Control step S106 is a step in which the control unit 40 controls the flow rate F1. The flow rate F1 is the flow rate of exhaust gas 14 that is drawn in by the induction device 42 and flows into the recovery mechanism 10. If the induction device 42 is an induction blower, control step S106 may be a step in which the control unit 40 controls the flow rate F1 by controlling the rotation speed of the induction blower. 【0101】 After control step S104 or control step S106, the carbon dioxide recovery method proceeds to measurement step S108. Measurement step S108 is a step in which the concentration sensor 20 measures concentration D1, concentration D2, or concentration D3, the flow sensor 24 measures flow rate F1 or flow rate F2, or the pressure sensor 22 measures pressure P1 or pressure P2. Measurement step S108 may be a step in which at least one of concentration D1, concentration D2, concentration D3, flow rate F1, flow rate F2, pressure P1, and pressure P2 is measured after the flow rate F2-1 is controlled in control step S104 or after the flow rate F1 is controlled in control step S106. After measurement step S108, the carbon dioxide recovery method proceeds to determination step S110. 【0102】 The determination step S110 is a step in which the control unit 40 determines whether at least one of the measured values ​​of concentration D1, concentration D2, concentration D3, flow rate F1, flow rate F2, pressure P1, and pressure P2 is an abnormal value. An abnormal value refers to a value that the control unit 40 cannot recover to a predetermined normal range from concentration D1, concentration D2, concentration D3, flow rate F1, flow rate F2, pressure P1, and pressure P2, either because the flow rate F2-1 is controlled in control step S104 or because the flow rate F1 is controlled in control step S106. If at least one of the measured values ​​of concentration D1, concentration D2, concentration D3, flow rate F1, flow rate F2, pressure P1, and pressure P2 is an abnormal value, the carbon dioxide recovery device 100 terminates the recovery of CO2 (carbon dioxide). If at least one of the measured values ​​is not an abnormal value, the carbon dioxide recovery method returns to the calculation step S100. 【0103】 Figure 4 shows an example of the relationship between the deviation between the measured recovery rate η and the recovery rate SV, and the opening degree of valve 34. Control step S104 may be a step in which the control unit 40 controls the flow rate F2-1 by controlling the valve 34 to an opening degree corresponding to the deviation between the measured recovery rate η and the recovery rate SV. In this example, the larger the deviation between the measured recovery rate η and the recovery rate SV, the larger the opening degree of valve 34 is controlled by the control unit 40. 【0104】 Figure 5 shows an example of the relationship between the deviation between the measured recovery rate η and the recovery rate SV, and the rotational speed of the induced blower, when the induction device 42 is an induced blower. Control step S106 may be a step in which the control unit 40 controls the flow rate F1 by controlling the rotational speed of the induced blower to a speed corresponding to the deviation between the measured recovery rate η and the recovery rate SV. In this example, the larger the deviation between the measured recovery rate η and the recovery rate SV, the larger the rotational speed of the induced blower controlled by the control unit 40. 【0105】 Figure 6 is a block diagram showing an example of a method for controlling the recovery rate η in a carbon dioxide recovery device 100 according to one embodiment of the present invention. In this example, the control unit 40 has an adder 41 and a PID control unit 43. In this example, the control target of the control unit 40 is defined as the control target 110. The control target 110 includes at least one of a valve 30, an induction device 42, a valve 32, a concentrator 48, a compressor 13-1, a valve 34, and a compressor 13-2. In this example, the sensor that measures the physical quantity for calculating the recovery rate η is defined as the sensor 120. The sensor 120 includes at least one of a CO2 (carbon dioxide) sensor 20-1, a CO2 (carbon dioxide) sensor 20-2, a pressure sensor 22-1, a pressure sensor 22-2, a flow rate sensor 24-1, a pressure sensor 22-3, a pressure sensor 22-4, a flow rate sensor 24-2, a CO2 (carbon dioxide) sensor 20-3, and a CO2 (carbon dioxide) sensor 20-4. 【0106】 The addition unit 41 calculates the deviation between the recovery rate SV and the recovery rate η. This deviation is denoted as deviation e. The PID control unit 43 calculates the control variable MV to be PID controlled by the controlled object 110 based on the deviation e. The control unit 40 may control the controlled object 110 based on the control variable MV. 【0107】 The sensor 120 measures a physical quantity in the controlled object 110, which is controlled by the controlled quantity MV. The control unit 40 may calculate the recovery rate η based on the measured physical quantity. 【0108】 Figure 7 shows an example of a method for calculating the recovery rate η in a carbon dioxide recovery device 100 according to one embodiment of the present invention. However, in Figure 7, the exhaust gas source 12-2 and CO2 (carbon dioxide) sensor 20-2 shown in Figure 1 are omitted. As described above, the carbon dioxide recovery device 100 may further include CO2 (carbon dioxide) sensors 20-5 and CO2 (carbon dioxide) sensors 20-6. CO2 (carbon dioxide) sensor 20-5 measures the concentration of CO2 (carbon dioxide) that is processed by the processing unit 46 and flows into the recovery mechanism 10. CO2 (carbon dioxide) sensor 20-6 measures the concentration of CO2 (carbon dioxide) that is concentrated by the concentrator 48 and flows into the separation unit 44. 【0109】 In Figure 7, the flow rate of the exhaust gas 14 (see Figure 1) is denoted as flow rate F. Flow rate F may be the volume or mass of exhaust gas 14 flowing per unit time. The CO2 (carbon dioxide) concentration of the exhaust gas 14 is denoted as concentration C. The flow rate F of the exhaust gas 14 discharged from the exhaust gas source 12 is denoted as flow rate F0, and the concentration C is denoted as concentration C0. The flow rate F of the exhaust gas 14 processed by the processing unit 46 is denoted as flow rate F1, and the concentration C is denoted as concentration C1. The flow rate F of the exhaust gas 14 concentrated by the concentrator 48 is denoted as flow rate F2, and the concentration C is denoted as concentration C2. The flow rate F of the exhaust gas 14 separated by the separation unit 44 is denoted as flow rate F3, and the concentration C is denoted as concentration C3. The flow rate F of the exhaust gas 14 desorbed by the storage desorber 45 is denoted as flow rate F4, and the concentration C is denoted as concentration C4. 【0110】 Figure 8 shows an example of the CO2 (carbon dioxide) recovery rate η or branching rate η at each of the controlled objects 110 (see Figure 6) and the CO2 (carbon dioxide) recovery rate η at the outlet end 19 of the carbon dioxide recovery device 100 (see Figure 1). Figure 8 shows the CO2 (carbon dioxide) branching rate η0 to recovery rate η4 at each of the valve 30, processing unit 46, concentrator 48, separation unit 44, and storage / desorption unit 45. The branching rate η0 to recovery rate η4 is expressed in terms of flow rate F0 to flow rate F4 and concentration C0 to concentration C4 as shown in Figure 8. 【0111】 The flow rate F0 may be the rated exhaust gas volume of the exhaust gas source 12. The rated exhaust gas volume may be the so-called specification exhaust gas volume. The measured value of the branching rate η0 may be the ratio of the flow rate F1 measured by the flow rate sensor 24-1 to the rated exhaust gas volume F0 of the exhaust gas source 12. The control unit 40 (see Figure 1) may calculate the measured value of the recovery rate η at the outlet end 19 (see Figure 1) by multiplying the measured value of the branching rate η0 by the recovery rates η1 to η4. Figure 8 shows an example of the values ​​of the branching rate η0 and recovery rates η1 to η4 from the valve 30 to the storage / detaching machine 45. In this example, the recovery rate η at the outlet end 19 is 12%. 【0112】 The control unit 40 may calculate a branching rate η0 based on the measured value of the calculated recovery rate η and the recovery rate SV (target recovery rate). Based on the calculated branching rate η0, the control unit 40 may adjust the opening degree of the valve 30 (see Figure 1) and control the amount of exhaust gas 14 (see Figure 1) drawn by the induction device 42 (see Figure 1). 【0113】 Various embodiments of the present invention may be described with reference to flowcharts and block diagrams. In various embodiments of the present invention, a block may represent (1) a stage in a process in which an operation is performed or (2) a section of equipment having the role of performing the operation. 【0114】 Certain stages may be performed by dedicated circuits, programmable circuits, or processors. Certain sections may be implemented by dedicated circuits, programmable circuits, or processors. Such programmable circuits and processors may be supplied with computer-readable instructions. Such computer-readable instructions may be stored on a computer-readable medium. 【0115】 A dedicated circuit may include at least one of a digital hardware circuit and an analog hardware circuit. A dedicated circuit may also include at least one of an integrated circuit (IC) and a discrete circuit. A programmable circuit may include hardware circuits for logic AND, logic OR, logic XOR, logic NAND, logic NOR, or other logic operations. A programmable circuit may also include reconfigurable hardware circuits, such as memory elements including flip-flops, registers, field-programmable gate arrays (FPGAs), and programmable logic arrays (PLAs). 【0116】 A computer-readable medium may include any tangible device capable of storing instructions that are executed by a suitable device. By including such a tangible device, the computer-readable medium having instructions stored in such device comprises a product that includes instructions that can be executed to create means for performing operations specified in a flowchart or block diagram. 【0117】 Computer-readable media may include, for example, electronic storage media, magnetic storage media, optical storage media, electromagnetic storage media, semiconductor storage media, etc. More specifically, computer-readable media may include, for example, floppy disks (registered trademark), diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), electrically erasable programmable read-only memory (EEPROM), static random access memory (SRAM), compact disk read-only memory (CD-ROM), digital multipurpose disc (DVD), Blu-ray (RTM) disc, memory stick, integrated circuit card, etc. 【0118】 Computer-readable instructions may include assembler instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, source code, and object code. The source code and object code may be written in any combination of one or more programming languages, including object-oriented programming languages ​​and conventional procedural programming languages. Object-oriented programming languages ​​may include, for example, Smalltalk®, Java®, and C++. Procedural programming languages ​​may include, for example, the C programming language. 【0119】 Computer-readable instructions may be provided locally or via a wide area network (WAN), such as a local area network (LAN) or the internet, to the processor or programmable circuit of a general-purpose computer, a special-purpose computer, or other programmable data processing device. The processor or programmable circuit of the general-purpose computer, a special-purpose computer, or other programmable data processing device may execute computer-readable instructions to create means for performing operations specified in the flowchart shown in Figure 3, or the block diagrams shown in Figure 1 or Figure 6. The processor may be, for example, a computer processor, a processing unit, a microprocessor, a digital signal processor, a controller, a microcontroller, etc. 【0120】 Figure 9 shows an example of a computer 2200 in which a carbon dioxide capture device 100 according to one embodiment of the present invention may be fully or partially embodied. A program installed on the computer 2200 can cause the computer 2200 to function as an operation associated with the carbon dioxide capture device 100 according to an embodiment of the present invention, or as one or more sections of the carbon dioxide capture device 100, or to execute such operation or one or more sections, or to cause the computer 2200 to execute each step (see Figure 3) of the carbon dioxide capture method of the present invention. The program may be executed by the CPU 2212 to cause the computer 2200 to perform specific operations associated with some or all of the blocks in the flowchart (Figure 3) and block diagram (Figure 1 or Figure 6) described herein. 【0121】 A program that causes the computer 2200 to perform operations associated with the carbon dioxide capture device 100 according to an embodiment of the present invention may be stored in the memory unit. The control unit 40 (see Figure 1) may have a processor. This processor is, for example, a CPU 2212. 【0122】 A program that allows the computer 2200 to perform operations associated with the carbon dioxide recovery device 100 according to an embodiment of the present invention causes the processor in the control unit 40 to control the flow rate of exhaust gas 14 discharged from the exhaust gas source 12 and flowing into the recovery mechanism 10 based on at least one of the first carbon dioxide concentration of exhaust gas 14 discharged from the exhaust gas source 12, the second carbon dioxide concentration of exhaust gas 15 flowing through the recovery mechanism 10, and the third carbon dioxide concentration of exhaust gas 17 flowing out of the recovery mechanism 10. A program that allows the computer 2200 to perform operations associated with the carbon dioxide recovery device 100 according to an embodiment of the present invention causes the processor in the control unit 40 to control the flow rate of each exhaust gas 14 discharged from each of the plurality of exhaust gas sources 12 and flowing into the recovery mechanism 10. 【0123】 A computer 2200 according to one embodiment of the present invention includes a CPU 2212, RAM 2214, a graphics controller 2216, and a display device 2218. The CPU 2212, RAM 2214, graphics controller 2216, and display device 2218 are interconnected by a host controller 2210. The computer 2200 further includes input / output units such as a communication interface 2222, a hard disk drive 2224, a DVD-ROM drive 2226, and an IC card drive. The communication interface 2222, hard disk drive 2224, DVD-ROM drive 2226, and IC card drive are connected to the host controller 2210 via an input / output controller 2220. The computer further includes legacy input / output units such as a ROM 2230 and a keyboard 2242. The ROM 2230 and keyboard 2242 are connected to the input / output controller 2220 via an input / output chip 2240. 【0124】 The CPU 2212 controls each unit by operating according to programs stored in the ROM 2230 and RAM 2214. The graphics controller 2216 retrieves the image data generated by the CPU 2212 and places it in the frame buffer or other location provided in RAM 2214, or in RAM 2214 itself, so that the image data is displayed on the display device 2218. 【0125】 The communication interface 2222 communicates with other electronic devices via a network. The hard disk drive 2224 stores programs and data used by the CPU 2212 in the computer 2200. The DVD-ROM drive 2226 reads programs or data from the DVD-ROM 2201 and provides the read programs or data to the hard disk drive 2224 via the RAM 2214. The IC card drive reads programs and data from or writes programs and data to the IC card. 【0126】 ROM2230 stores boot programs executed by computer 2200 upon activation, or programs that depend on the computer 2200's hardware. The input / output chip 2240 may connect various input / output units to the input / output controller 2220 via parallel ports, serial ports, keyboard ports, mouse ports, etc. 【0127】 The program is provided on a computer-readable medium such as a DVD-ROM 2201 or an IC card. The program is read from the computer-readable medium and installed on a hard disk drive 2224, RAM 2214, or ROM 2230, which are also examples of computer-readable medium, and executed by the CPU 2212. The information processing described within these programs is read by the computer 2200, resulting in coordination between the program and the various types of hardware resources described above. The apparatus or method may be configured to realize the manipulation or processing of information in accordance with the use of the computer 2200. 【0128】 For example, when communication is performed between a computer 2200 and an external device, the CPU 2212 may execute a communication program loaded into RAM 2214 and instruct the communication interface 2222 to perform communication processing based on the processing described in the communication program. Under the control of the CPU 2212, the communication interface 2222 reads transmission data stored in a transmission buffer processing area provided in a recording medium such as RAM 2214, a hard disk drive 2224, a DVD-ROM 2201, or an IC card, transmits the read transmission data to the network, or writes received data received from the network to a reception buffer processing area provided on the recording medium. 【0129】 The CPU 2212 may read all or necessary parts of a file or database stored on an external recording medium such as a hard disk drive 2224, a DVD-ROM drive 2226 (DVD-ROM 2201), or an IC card into the RAM 2214. The CPU 2212 may perform various types of processing on the data in the RAM 2214. The CPU 2212 may then write the processed data back to the external recording medium. 【0130】 Various types of information, such as various types of programs, data, tables, and databases, may be stored on the recording medium and processed. The CPU 2212 may perform various types of processing on the data read from the RAM 2214, including various types of operations, information processing, conditional decisions, conditional branching, unconditional branching, information retrieval, or replacement, as specified by the program instruction sequence described in this disclosure. The CPU 2212 may write the results back to the RAM 2214. 【0131】 CPU2212 may search for information in files, databases, etc., within the recording medium. For example, if multiple entries are stored in the recording medium, each having an attribute value of a first attribute associated with the attribute value of a second attribute, CPU2212 may search among the multiple entries for an entry that matches the specified condition for the attribute value of the first attribute, read the attribute value of the second attribute stored within that entry, and thereby obtain the attribute value of the second attribute associated with the first attribute that satisfies a predetermined condition. 【0132】 The program or software module described above may be stored on or on a computer-readable medium of the computer 2200. A recording medium such as a hard disk or RAM provided within a server system connected to a dedicated communication network or the Internet can be used as a computer-readable medium. The program may be provided to the computer 2200 via such a recording medium. 【0133】 Although the present invention has been described above using embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various modifications or improvements can be made to the above embodiments. It will be clear from the claims that such modified or improved forms may also be included in the technical scope of the present invention. 【0134】 It should be noted that the execution order of operations, procedures, steps, and stages in the apparatus, systems, programs, and methods shown in the claims, specifications, and drawings is not explicitly stated as "before," "prior to," etc., and that these can be implemented in any order unless the output of a previous process is used in a later process. Even if the operation flow in the claims, specifications, and drawings is described using phrases such as "first," "next," etc. for convenience, it does not mean that it is essential to perform the operations in that order. [Item 1] A recovery mechanism that recovers carbon dioxide contained in exhaust gases emitted from each of multiple exhaust gas sources, A control unit that controls the flow rate of each of the exhaust gases discharged from each of the multiple exhaust gas sources and flowing into the recovery mechanism, A carbon dioxide capture device equipped with the following features. [Item 2] The device further comprises an inducer that draws the exhaust gas discharged from the above-mentioned multiple exhaust gas sources into the recovery mechanism, The control unit further controls the amount of exhaust gas drawn by the induction device based on the flow rate of each of the exhaust gases flowing into the recovery mechanism. The carbon dioxide capture device described in item 1. [Item 3] Each of the above exhaust gases is drawn in by the common induction device described above, in the carbon dioxide recovery device described in item 2. [Item 4] The carbon dioxide recovery apparatus according to item 2 or 3, wherein the control unit further controls the flow rate of exhaust gas that is attracted by the attractor and flows into the attractor, based on the flow rate of each of the exhaust gases that flows into the recovery mechanism. [Item 5] The above recovery mechanism has a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit controls the flow rate of exhaust gas flowing into the separation unit, based on the flow rate of each of the exhaust gases flowing into the recovery mechanism, so that at least a portion of the carbon dioxide is separated by the separation unit. Carbon dioxide capture device as described in item 4. [Item 6] The carbon dioxide recovery apparatus according to item 5, wherein the control unit controls the recovery rate of carbon dioxide recovered by the recovery mechanism by controlling at least one of the flow rates of each of the exhaust gases flowing into the recovery mechanism, the flow rate of the exhaust gases attracted by the induction device and flowing into the induction device, and the flow rate of the exhaust gases flowing into the separation unit. [Item 7] The carbon dioxide recovery apparatus according to item 6, wherein the control unit controls at least one of the flow rates of the exhaust gases flowing into the recovery mechanism, the flow rate of the exhaust gases drawn by the induction device and flowing into the induction device, and the flow rate of the exhaust gases flowing into the separation unit, so that the recovery rate of carbon dioxide recovered by the recovery mechanism is equal to or greater than a predetermined target recovery rate. [Item 8] The carbon dioxide recovery apparatus according to any one of items 5 to 7, wherein the control unit controls the pressure of the exhaust gas flowing through the recovery mechanism by controlling at least one of the flow rates of each of the exhaust gases flowing into the recovery mechanism, the flow rate of the exhaust gases drawn in by the induction device and flowing into the induction device, and the flow rate of the exhaust gases flowing into the separation unit. [Item 9] The carbon dioxide recovery apparatus according to item 8, wherein the control unit controls at least one of the flow rates of each of the exhaust gases flowing into the recovery mechanism, the flow rate of the exhaust gases drawn in by the induction device and flowing into the induction device, and the flow rate of the exhaust gases flowing into the separation unit, thereby controlling fluctuations in the exhaust gas pressure based on fluctuations in the load of the plurality of exhaust gas sources. [Item 10] The carbon dioxide recovery apparatus according to item 9, wherein the control unit controls the flow rate of the exhaust gas flowing into the separation unit when the pressure fluctuation of the exhaust gas is within a predetermined range. [Item 11] The carbon dioxide recovery apparatus according to item 10, wherein the control unit controls the flow rate of each of the exhaust gases flowing into the recovery mechanism, or the flow rate of the exhaust gases that are drawn in by the induction device and flow into the induction device, when the fluctuation in the pressure of the exhaust gas is not within the fluctuation range. [Item 12] The carbon dioxide recovery apparatus according to any one of items 9 to 11, wherein the control unit controls the flow rate of each of the exhaust gases flowing into the recovery mechanism, or the flow rate of the exhaust gases flowing into the induction device, such that the pressure of each of the exhaust gases discharged from the plurality of exhaust gas sources is greater than the pressure of the exhaust gases flowing through the recovery mechanism. [Item 13] The system further includes a processing unit that removes heat from the exhaust gas discharged from the multiple exhaust gas sources, or removes impurities contained in the exhaust gas discharged from the multiple exhaust gas sources. The control unit controls the flow rate of the exhaust gas discharged from the multiple exhaust gas sources and passing through the processing unit by controlling the flow rate of each of the exhaust gases flowing into the recovery mechanism, controlling the flow rate of the exhaust gas drawn in by the induction device and flowing into the induction device, or controlling the amount of exhaust gas drawn in by the induction device. A carbon dioxide capture device as described in any one of items 5 through 12. [Item 14] A carbon dioxide recovery apparatus according to any one of items 5 to 13, wherein the control unit controls the flow rate of each of the exhaust gases discharged from the plurality of exhaust gas sources and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the plurality of exhaust gas sources, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out from the recovery mechanism. [Item 15] The carbon dioxide recovery apparatus according to item 14, wherein the control unit controls at least one of the flow rates of the exhaust gas flowing into the recovery mechanism, the flow rate of the exhaust gas drawn by the induction device and flowing into the induction device, and the flow rate of the exhaust gas flowing into the separation unit, based on the deviation between the ratio of the first carbon dioxide concentration and the third carbon dioxide concentration and a predetermined target recovery rate of carbon dioxide, or the deviation between the ratio of the first carbon dioxide concentration and the second carbon dioxide concentration and the target recovery rate. [Item 16] The control unit controls whether the induction device induces the first exhaust gas, the first exhaust gas and the second exhaust gas, or the second exhaust gas, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. Carbon dioxide capture equipment as described in item 14 or 15. [Item 17] The carbon dioxide recovery apparatus according to any one of items 14 to 16, wherein the control unit controls the exhaust gas discharged from the plurality of exhaust gas sources so as not to flow into the recovery mechanism, and controls the induction machine so as not to induce the exhaust gas, and the control unit controls the flow rate of the exhaust gas induced by the induction machine into the induction machine. [Item 18] The carbon dioxide recovery apparatus according to item 17, wherein the control unit further controls the flow rate of the exhaust gas, from which at least a portion of the carbon dioxide has been separated by the separation unit, into the separation unit. [Item 19] The carbon dioxide recovery apparatus according to any one of items 11 to 18, wherein the control unit controls the flow rate of the exhaust gas so that, for a predetermined time after at least one of the plurality of exhaust gas sources is started, the exhaust gas discharged by each of the plurality of exhaust gas sources does not flow into the recovery mechanism. [Explanation of symbols] 【0135】 10...Recovery mechanism, 12...Exhaust gas source, 13...Compressor, 14...Exhaust gas, 15...Exhaust gas, 16...Discharge end, 17...Exhaust gas, 19...Outlet end, 20...Sensor, 22...Pressure sensor, 24...Flow sensor, 28...Rotation speed measurement sensor, 30...Valve, 32...Valve, 34...Valve, 40...Control unit, 41...Adding unit, 42...Induction machine, 43...PID control unit, 44...Separation unit, 45...Storage / desorption machine, 46...Processing unit, 48...Concentrator, 50...First exhaust gas pipe, 52...Second exhaust gas pipe, 10 0...Carbon dioxide capture device, 110...Controlled object, 120...Sensor, 2200...Computer, 2201...DVD-ROM, 2210...Host controller, 2212...CPU, 2214...RAM, 2216...Graphics controller, 2218...Display device, 2220...Input / output controller, 2222...Communication interface, 2224...Hard disk drive, 2226...DVD-ROM drive, 2230...ROM, 2240...Input / output chip, 2242...Keyboard

Claims

[Claim 1] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, Equipped with, The control unit further controls the amount of exhaust gas drawn by the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The control unit further controls the flow rate of exhaust gas attracted by the induction device and flowing into the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The recovery mechanism has a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit controls the flow rate of exhaust gas flowing into the separation unit, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration, so that at least a portion of the carbon dioxide is separated by the separation unit. The control unit controls the recovery rate of carbon dioxide recovered by the recovery mechanism by controlling at least one of the flow rate of the exhaust gas attracted by the induction machine and flowing into the induction machine, and the flow rate of the exhaust gas flowing into the separation unit. Carbon dioxide capture device. [Claim 2] The carbon dioxide recovery apparatus according to claim 1, wherein the control unit controls at least one of the flow rate of the exhaust gas attracted by the attractor and flowing into the attractor, and the flow rate of the exhaust gas flowing into the separation unit, so that the recovery rate of carbon dioxide recovered by the recovery mechanism is equal to or greater than a predetermined target recovery rate. [Claim 3] The carbon dioxide recovery apparatus according to claim 2, wherein the control unit controls at least one of the flow rate of the exhaust gas attracted by the attractor and flowing into the attractor, and the flow rate of the exhaust gas flowing into the separation unit, based on the deviation between the ratio of the first carbon dioxide concentration to the third carbon dioxide concentration and the target recovery rate, or the deviation between the ratio of the first carbon dioxide concentration to the second carbon dioxide concentration and the target recovery rate. [Claim 4] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, Equipped with, The control unit further controls the amount of exhaust gas drawn by the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The control unit further controls the flow rate of exhaust gas attracted by the induction device and flowing into the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The recovery mechanism has a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit controls the flow rate of exhaust gas flowing into the separation unit, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration, so that at least a portion of the carbon dioxide is separated by the separation unit. The control unit controls the pressure of the exhaust gas flowing through the recovery mechanism by controlling at least one of the flow rate of the exhaust gas drawn in by the induction machine and flowing into the induction machine, and the flow rate of the exhaust gas flowing into the separation unit. Carbon dioxide capture device. [Claim 5] The carbon dioxide recovery apparatus according to claim 4, wherein the control unit controls the flow rate of the exhaust gas drawn by the induction machine and flowing into the induction machine, and the flow rate of the exhaust gas flowing into the separation unit, thereby controlling fluctuations in the pressure of the exhaust gas based on fluctuations in the load of the exhaust gas source. [Claim 6] The carbon dioxide recovery apparatus according to claim 5, wherein the control unit controls the flow rate of the exhaust gas flowing into the separation unit when the fluctuation of the exhaust gas pressure is within a predetermined fluctuation range. [Claim 7] The carbon dioxide recovery apparatus according to claim 6, wherein the control unit controls the flow rate of the exhaust gas that is drawn in by the induction device and flows into the induction device when the fluctuation of the exhaust gas pressure is not within the fluctuation range. [Claim 8] The carbon dioxide recovery apparatus according to any one of claims 5 to 7, wherein the control unit controls the flow rate of the exhaust gas flowing into the induction device such that the pressure of the exhaust gas discharged from the exhaust gas source is greater than the pressure of the exhaust gas flowing through the recovery mechanism. [Claim 9] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, A processing unit that removes heat from the exhaust gas discharged from the exhaust gas source, or removes impurities contained in the exhaust gas discharged from the exhaust gas source, Equipped with, The control unit further controls the amount of exhaust gas drawn by the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The control unit further controls the flow rate of exhaust gas attracted by the induction device and flowing into the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The recovery mechanism has a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit controls the flow rate of exhaust gas flowing into the separation unit, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration, so that at least a portion of the carbon dioxide is separated by the separation unit. The control unit controls the flow rate of the exhaust gas drawn in by the induction device and flowing into the induction device, or controls the amount of exhaust gas drawn in by the induction device, thereby controlling the flow velocity of the exhaust gas discharged from the exhaust gas source and passing through the processing unit. Carbon dioxide capture device. [Claim 10] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, Equipped with, The control unit further controls the amount of exhaust gas drawn by the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The control unit further controls the flow rate of exhaust gas attracted by the induction device and flowing into the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The recovery mechanism has a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit controls the flow rate of exhaust gas flowing into the separation unit, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration, so that at least a portion of the carbon dioxide is separated by the separation unit. When the control unit controls the exhaust gas discharged from the exhaust gas source so as not to flow into the recovery mechanism, and controls the induction machine so as not to induce the exhaust gas, the control unit controls the flow rate of the exhaust gas induced by the induction machine into the induction machine. Carbon dioxide capture device. [Claim 11] The carbon dioxide recovery apparatus according to claim 10, wherein the control unit further controls the flow rate of the exhaust gas, from which at least a portion of the carbon dioxide has been separated by the separation unit, into the separation unit. [Claim 12] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, Equipped with, The control unit further controls the amount of exhaust gas drawn by the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The control unit controls the flow rate of each of the exhaust gases discharged from each of the plurality of exhaust gas sources and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. Carbon dioxide capture device. [Claim 13] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, Equipped with, The control unit further controls the amount of exhaust gas drawn by the induction device based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. Each of the exhaust gases discharged from the multiple exhaust gas sources is drawn in by a common induction device. Carbon dioxide capture device. [Claim 14] The control unit controls whether the induction device induces the first exhaust gas, the second exhaust gas, or both the first and second exhaust gases, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. The carbon dioxide recovery apparatus according to claim 13. [Claim 15] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, Equipped with, The control unit controls the flow rate of the exhaust gas so that the exhaust gas discharged by the exhaust gas source does not flow into the recovery mechanism for a predetermined time after the exhaust gas source is started. Carbon dioxide capture device. [Claim 16] A recovery mechanism that recovers carbon dioxide contained in exhaust gases emitted from each of multiple exhaust gas sources, A control unit that controls the flow rate of each of the exhaust gases discharged from each of the multiple exhaust gas sources and flowing into the recovery mechanism, A carbon dioxide capture device equipped with the following features. [Claim 17] The system further includes an inducer that draws the exhaust gas discharged from the plurality of exhaust gas sources into the recovery mechanism. The control unit further controls the amount of exhaust gas drawn by the drawer based on the flow rate of each of the exhaust gases flowing into the recovery mechanism. The carbon dioxide recovery apparatus according to claim 16. [Claim 18] The carbon dioxide recovery apparatus according to claim 17, wherein each of the exhaust gases is drawn in by a common induction device. [Claim 19] The carbon dioxide recovery apparatus according to claim 17 or 18, wherein the control unit further controls the flow rate of exhaust gas that is drawn in by the induction device and flows into the induction device based on the flow rate of each of the exhaust gases flowing into the recovery mechanism. [Claim 20] The recovery mechanism has a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit controls the flow rate of exhaust gas flowing into the separation unit, based on the flow rate of each of the exhaust gases flowing into the recovery mechanism, so that at least a portion of the carbon dioxide is separated by the separation unit. The carbon dioxide recovery apparatus according to claim 19. [Claim 21] The carbon dioxide recovery apparatus according to claim 20, wherein the control unit controls the recovery rate of carbon dioxide recovered by the recovery mechanism by controlling at least one of the flow rates of each of the exhaust gases flowing into the recovery mechanism, the flow rate of the exhaust gases drawn in by the induction machine and flowing into the induction machine, and the flow rate of the exhaust gases flowing into the separation unit. [Claim 22] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, Equipped with, The control unit controls the rate at which carbon dioxide is recovered by the recovery mechanism by controlling the flow rate of the exhaust gas attracted by the attractor and flowing into the attractor, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. Carbon dioxide capture device. [Claim 23] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, Equipped with, The recovery mechanism has a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit controls the recovery rate of carbon dioxide recovered by the recovery mechanism by controlling the flow rate of the exhaust gas flowing into the separation unit, which separates at least a portion of the carbon dioxide, based on at least one of the first carbon dioxide concentration, the second carbon dioxide concentration, and the third carbon dioxide concentration. Carbon dioxide capture device. [Claim 24] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, Equipped with, The control unit controls the pressure of the exhaust gas flowing through the recovery mechanism by controlling the flow rate of the exhaust gas that is attracted by the induction device and flows into the induction device. Carbon dioxide capture device. [Claim 25] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, Equipped with, The recovery mechanism has a separation unit that separates at least a portion of the carbon dioxide contained in the exhaust gas flowing through the recovery mechanism from the exhaust gas. The control unit controls the pressure of the exhaust gas flowing through the recovery mechanism by controlling the flow rate of the exhaust gas flowing into the separation unit, after at least a portion of the carbon dioxide has been separated by the separation unit. Carbon dioxide capture device. [Claim 26] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, A processing unit that removes heat from the exhaust gas discharged from the exhaust gas source, or removes impurities contained in the exhaust gas discharged from the exhaust gas source, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, Equipped with, The control unit controls the flow rate of the exhaust gas that is discharged from the exhaust gas source and passes through the processing unit by controlling the flow rate of the exhaust gas that is drawn in by the induction device or by controlling the amount of exhaust gas drawn in by the induction device. Carbon dioxide capture device. [Claim 27] ​​A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, A control unit that controls the flow rate of the exhaust gas discharged from the exhaust gas source and flowing into the recovery mechanism based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism, Equipped with, When the control unit controls the exhaust gas discharged from the exhaust gas source so as not to flow into the recovery mechanism, and controls the induction machine so as not to induce the exhaust gas, the control unit controls the flow rate of the exhaust gas induced by the induction machine into the induction machine. Carbon dioxide capture device. [Claim 28] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from multiple exhaust gas sources, A control unit that controls the flow rate of each of the exhaust gases discharged from each of the multiple exhaust gas sources and flowing into the recovery mechanism, based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the multiple exhaust gas sources, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out from the recovery mechanism. A carbon dioxide capture device equipped with the following features. [Claim 29] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, An inducer that draws the exhaust gas discharged from the exhaust gas source to the recovery mechanism, A control unit controls the flow rate of the exhaust gas that flows into the recovery mechanism from the exhaust gas discharged from the exhaust gas source, based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism. Equipped with, The control unit controls the flow rate of the exhaust gas flowing into the recovery mechanism by controlling the induction device. Carbon dioxide capture device. [Claim 30] A recovery mechanism for recovering carbon dioxide contained in exhaust gas emitted from an exhaust gas source, A control unit controls the flow rate of the exhaust gas that flows into the recovery mechanism from the exhaust gas discharged from the exhaust gas source, based on at least one of the first carbon dioxide concentration of the exhaust gas discharged from the exhaust gas source, the second carbon dioxide concentration of the exhaust gas flowing through the recovery mechanism, and the third carbon dioxide concentration of the exhaust gas flowing out of the recovery mechanism. An exhaust gas pipe connecting the exhaust gas source and the recovery mechanism, A valve provided in the exhaust gas pipe, Equipped with, The control unit controls the flow rate of the exhaust gas that flows through the exhaust gas pipe and into the recovery mechanism by controlling the valve. Carbon dioxide capture device.

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