JP2019209249A - Apparatus and method of evaporative concentration apparatus for power generation facility and power generation facility - Google Patents

Abstract

To provide an evaporative concentration apparatus being installed in a power generation facility such as a thermal power plant and the like and effectively utilizing thermal energy generated in the power generation facility.SOLUTION: An evaporative concentration apparatus performing the evaporative concentration treatment of water to be treated containing a mixed component includes: a humidification tower bringing a carrier gas into gas-liquid contact with the water to be treated and discharging the humidified carrier gas; a dehumidification tower forming a dehumidified carrier gas by bringing the humidified carrier gas into gas-liquid contact with cooling water and condensing at least a part of a moisture content and discharging the dehumidified carrier gas; a first circulation path circulating the water to be treated to the humidification tower; and a heating means heating the water to be treated. The heating means heats the water to be treated using hot water discharged from a feed water heater in a power generation facility as a heat source.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an evaporative concentration apparatus and method used for wastewater treatment in a power generation facility such as a thermal power plant, and a power generation facility including such an evaporative concentration device.

  In power generation facilities such as thermal power plants, wastewater containing various components such as acids, alkalis and metal salts is generated. Recently, ZLD (Zero Liquid Discharge) regulations that reduce the amount of liquid waste to zero have been increasingly applied from the viewpoint of preventing water pollution and effective use of water resources. Therefore, an evaporative concentration technique for generating concentrated water in which the mixed components are concentrated from the water to be treated which is wastewater mixed with various components has been required. After evaporating and concentrating the water to be treated, for example, mixed components are separated from the concentrated water. The evaporative concentration process also generates treated water that does not contain mixed components, but the treated water can be reused. As the evaporative concentration apparatus, a multi-stage effect can type, a multi-stage distillation type, a mechanical compression type, and the like are known. However, these have a problem that a lot of energy is consumed and a running cost becomes high. Although heat recovery by a heat exchanger is not impossible, the amount of heat that can be recovered is limited.

Special table 2015-527930 gazette JP-T-2006-530096 US Patent No. 9120033 US Patent Application Publication No. 2015/0129410

  A large amount of energy is required for the operation of the evaporative concentrator, but in a power generation facility such as a thermal power plant, a large amount of hot water is generated after the steam turbine is driven very efficiently. Moreover, the energy of this hot water may be discarded without being used effectively.

  An object of the present invention is to provide an evaporative concentration apparatus and method capable of operating by effectively using thermal energy generated in the power generation facility, and a power generation facility having such an evaporative concentration apparatus.

  As a technique that can evaporate water using a heat source having a temperature close to or lower than the boiling point of water, there is a carrier gas type evaporator. The inventors of the present invention have completed the present invention by paying attention to a carrier gas evaporator. The carrier gas evaporator is a humidifying tower that humidifies the carrier gas by bringing the water to be treated and the carrier gas into gas-liquid contact under relatively high temperature conditions and transferring the water in the water to be treated as water vapor to the carrier gas. Next, the carrier gas containing water vapor is cooled in a dehumidifying tower to condense the water vapor in the carrier gas. Since the water in the water to be treated is transferred to the condensed water in the dehumidifying tower, volume reduction has been achieved as the water to be treated. The detailed configuration of such a carrier type gas evaporation apparatus is described in Patent Document 1 or Patent Document 2, for example. Patent Document 3 discloses that bubbling columns are provided in multiple stages as a means for improving the efficiency of gas-liquid contact when humidifying gas by gas-liquid contact. Further, Patent Document 4 discloses that bubbling columns are provided in multiple stages as one that increases the efficiency of gas-liquid contact when the gas is cooled by gas-liquid contact to condense moisture in the gas.

  Therefore, the evaporative concentration apparatus of the present invention is an evaporative concentration apparatus that is provided in a power generation facility and performs evaporative concentration treatment on water to be treated containing mixed components, and is supplied with carrier gas and water to be treated. A humidifying tower that brings the water to be treated into gas-liquid contact and humidifies and discharges the carrier gas; and the humidified carrier gas and cooling water are brought into gas-liquid contact to cool the humidified carrier gas, thereby cooling at least one of the moisture. A dehumidifying tower that generates and discharges a dehumidified carrier gas by condensing the part, a first circulation path that circulates the water to be treated with respect to the humidifying tower, and a heating means that heats the water to be treated The heating means warms the water to be treated using hot water discharged from the feed water heater of the power generation facility as a heat source.

  The power generation facility of the present invention includes the evaporative concentration apparatus of the present invention.

  The evaporative concentration method of the present invention is an evaporative concentration method for performing evaporative concentration treatment on water to be treated containing mixed components in a power generation facility, wherein the carrier gas and water to be treated are supplied to the carrier gas and water to be treated. Gas-liquid contact, humidifying and exhausting the carrier gas, and the humidified carrier gas and cooling water are brought into gas-liquid contact to cool the humidified carrier gas and condense at least part of the moisture. By using a carrier gas evaporator having a dehumidifying tower that generates and discharges a dehumidified carrier gas and a first circulation path that circulates water to be treated with respect to the humidifying tower, Water to be treated is heated in a carrier gas evaporator using hot water discharged from the feed water heater as a heat source.

  ADVANTAGE OF THE INVENTION According to this invention, the evaporative concentration apparatus can be operated using the thermal energy which generate | occur | produces in power generation equipment effectively.

It is a figure which shows the structure of general power generation equipment. It is a figure which shows the power generation equipment provided with the evaporative concentration apparatus based on this invention.

  Embodiments of the present invention will be described with reference to the drawings. In order to describe the power generation facility according to the present invention, first, a general power generation facility will be described with reference to FIG.

  The power generation facility shown in FIG. 1 is configured as a general thermal power plant that drives a generator 11 by a steam turbine. The high-pressure steam generated in the boiler 12 is guided to the high-pressure turbine 13, and the steam discharged from the high-pressure turbine 13 is again guided to the boiler 12 and reheated, and then guided to the intermediate-pressure turbine 14. Steam discharged from the intermediate pressure turbine 14 is guided to the low pressure turbine 15. The high-pressure turbine 13, the intermediate-pressure turbine 14, and the low-pressure turbine 15 are connected to a rotating shaft 16 that extends from the generator 11, and the generator 11 is driven by driving these turbines 13 to 15 with steam.

  Steam discharged from the low-pressure turbine 15 is cooled and condensed in the condenser 17, and the condensed water is subjected to a desalting process in the condensate demineralizer 18. In the condenser 17, for example, seawater is used as cooling water. The demineralized water is heated by the low-pressure feed water heater 19, deaerated by the deaerator 20, then further heated by the high-pressure feed water heater 21, and sent to the boiler 12. Thus, the boiler circulating water path returning from the boiler 12 to the boiler 12 through the turbines 13 to 15, the condenser 17, the low pressure feed water heater 19, the deaerator 20 and the high pressure feed water heater 21 is configured. The low-pressure feed water heater 19 and the high-pressure feed water heater 21 are provided to improve the thermal efficiency of the entire power generation facility, and perform heat recovery using steam before cooling. For example, as the heat source of the low-pressure feed water heater 19, steam extracted from the low-pressure turbine 15 and sent via the pipe 22 is used. The steam used as the heat source of the low-pressure feed water heater 19 is stored as hot water in the drain tank 23 and then returned to the condenser 17 or the inlet of the low-pressure feed water heater 19 through the pipe 24. In order to select whether the hot water is returned to the condenser 17 or the inlet of the low-pressure feed water heater 19, the pipe connecting the outlet of the condensate demineralizer 18 and the inlet of the low-pressure feed heater 19 is used as the pipe 27. A valve 25 is provided between the pipe 24 and the condenser 17, and a valve 26 is provided between the pipe 24 and the pipe 27.

  FIG. 2 shows a power generation facility according to the present invention. The power generation facility shown in FIG. 2 is a power generation facility shown in FIG. 1 in which an evaporation concentrating device that performs an evaporation concentration process using heat generated in the power generation facility is installed. The evaporative concentration apparatus performs evaporative concentration treatment on water to be treated having mixed components, for example, various wastewater generated in a plant including a power generation facility, and generates concentrated water obtained by concentrating mixed components in the water to be treated. At the same time, the water from which the mixed components have been removed is discharged as treated water. In the present embodiment, in the power generation facility shown in FIG. 1, the thermal energy of hot water returned from the drain tank 23 via the pipe 24 to the condenser 17 or the pipe 27 is recovered and evaporated to the evaporation concentrator by the heat. Processing is performed.

  The evaporative concentrator comprises a connection part 30 that is connected to the power generation facility and recovers thermal energy from hot water flowing through the pipe 24, and a carrier gas evaporator that uses heat recovered at the connection part 30 as at least a part of the heat source. And a main body 50. First, the main body 50 will be described.

  The main body 50 is roughly divided into heat that exchanges heat between the humidifying tower 60, the dehumidifying tower 70, the water to be circulated on the humidifying tower 60 side, and the cooling water circulated on the dehumidifying tower 70 side. And an exchanger 80. The humidification tower 60 is supplied with a carrier gas, brings the carrier gas into liquid-liquid contact with the water to be treated, and humidifies the carrier gas. For example, air or nitrogen is used as the carrier gas. The humidified carrier gas is discharged from the humidification tower 60 via a pipe 91 connected to the upper part of the humidification tower 60. The humidifying tower 60 is provided with a sprayer 66 that sprays the water to be treated against the carrier gas. A filler for promoting gas-liquid contact may be installed inside the humidifying tower 60. Further, the inside of the humidifying tower 60 may have a structure in which bubbling columns are provided in multiple stages as required, as disclosed in Patent Document 3. A water storage unit 61 for temporarily storing the water to be treated is formed at the lower portion of the humidifying tower 60, and a pipe 62 for discharging the water to be treated is connected thereto. The pipe 62 is connected to the inlet on the secondary side of the heat exchanger 80. A circulation pipe 63 for circulating the water to be treated to the humidification tower 60 is connected to the outlet on the secondary side of the heat exchanger 80. The circulation pipe 63 is provided with a heat exchanger 65 to be described later, and the tip of the circulation pipe 63 is connected to the sprayer 66 described above. The piping 62, the secondary side of the heat exchanger 80, and the circulation piping 63 constitute a first circulation path for circulating the water to be treated to the humidification tower 60 while heating the water to be treated. Is provided in the first circulation path. Here, the heat exchanger 65 is provided in the first circulation path. However, the heat exchanger 65 may be provided separately from the first circulation path as long as the water to be treated can be heated. . Furthermore, a pipe 64 for discharging the water to be treated as concentrated water described later is also connected to the pipe 62. The pipe 64 may be connected so as to directly discharge the water to be treated from the water storage unit 61 of the humidification tower 60. In the pipe 62, a pipe 67 for supplying the water to be treated to the first circulation path is connected to a position downstream of the branch point to the pipe 64. If the gas-liquid contact between the water to be treated and the carrier gas can be realized, the water to be treated may be directly supplied to the humidification tower 20.

  The dehumidifying tower 70 is supplied with the carrier gas humidified from the humidifying tower 60 via the pipe 91, and condenses the moisture in the carrier gas by bringing the carrier gas into gas-liquid contact with the cooling water sprayed from the sprayer 76. Is. The carrier gas from which a part of the moisture has been condensed and removed is discharged from the dehumidification tower 70 to the outside as a dehumidified carrier gas through a pipe 92 connected to the upper part of the dehumidification tower 70. A filling for promoting gas-liquid contact may be installed inside the dehumidifying tower 70. The inside of the dehumidifying tower 70 may have a structure in which bubbling columns are provided in multiple stages as required, as disclosed in Patent Document 4. A water storage part 71 for temporarily storing cooling water is formed at the lower part of the dehumidifying tower 70, and a pipe 72 for discharging the cooling water is further connected. The pipe 72 is connected to the inlet on the primary side of the heat exchanger 80. A circulation pipe 73 for circulating the cooling water to the dehumidification tower 70 is connected to the outlet on the primary side of the heat exchanger 80, and the tip of the circulation pipe 73 is connected to the sprayer 76 described above. A pipe 74 for discharging cooling water as treated water is also connected to the circulation pipe 73. The pipe 74 may be connected to the dehumidification tower 70 so that the cooling water is directly discharged from the water storage section 71 of the dehumidification tower 70. The piping 72, the primary side of the heat exchanger 80, and the circulation piping 73 constitute a second circulation path for circulating the cooling water to the dehumidifying tower 70 while cooling the cooling water.

  Next, the connection unit 30 will be described. The main body 50 configured as a carrier gas type evaporator operates when the water to be treated is heated in the heat exchanger 65. Therefore, the connection unit 30 has a function of heating the water to be treated by applying thermal energy of the hot water flowing through the piping 24 of the power generation facility to the heat exchanger 65. However, various components such as ionic impurities are mixed in the water to be treated, and it is absolutely necessary to avoid leakage of these components into the boiler circulating water system of the power generation facility. Therefore, in the present embodiment, the connection unit 30 does not directly supply the hot water flowing through the pipe 24 to the heat exchanger 65 but includes an intermediate heat exchanger 33 and indirectly through the heat exchanger 33. Heat is supplied to the heat exchanger 65.

  In the power generation facility, a bypass valve 31 is inserted into a pipe 24 for discharging hot water from the drain tank 23, and a pipe 32 is provided so as to connect both sides of the bypass valve 31. The pipe 32 is a heating pipe and passes hot water to the primary side of the heat exchanger 33. On-off valves 37 and 38 are provided at positions serving as an inlet and an outlet of the pipe 32, respectively. The secondary side of the heat exchanger 33 and the primary side of the heat exchanger 65 of the main body 50 of the evaporation concentrator are connected by pipes 34 and 35, and a heat medium such as pure water exchanges heat through the pipes 34 and 35. It is configured to circulate between the heat exchanger 33 and the heat exchanger 65. Thereby, the to-be-processed water which flows through the heat exchanger 65 is indirectly heated with the hot water which flows through the piping 32. FIG. Further, in order to detect an abnormality such that the water to be treated leaks to the power generation facility side, a head tank 36 is provided in the pipe 35, and the pipe 32 conducts at a position downstream of the outlet of the heat exchanger 33. A rate meter (EC) 39 is provided. By monitoring the liquid level fluctuation of the head tank 36 with a level meter, a water leakage sensor, etc., it is possible to detect the occurrence of an abnormality in the heat medium circulation path by the heat exchangers 33 and 65 and the pipes 34 and 35. By monitoring the conductivity of the hot water discharged from the heat exchanger 33 with the conductivity meter 39, it is possible to detect the occurrence of leakage of water to be treated from the main body 50 side of the evaporation concentrator to the pipe 32. .

  Next, the evaporation concentration process by the evaporation concentration apparatus in the power generation facility shown in FIG. 2 will be described. In order to perform the evaporative concentration process, the bypass valve 31 is closed at the connection portion 30 and the on-off valves 37 and 38 are opened, so that hot water discharged from the drain tank flows to the primary side of the heat exchanger 33 via the pipe 32. Like that. And a heat medium is circulated between the heat exchanger 33 and the heat exchanger 65 of the main-body part 50 by driving a pump not shown. As a result, the heat exchanger 65 can heat the water to be treated flowing therethrough.

  In the main body 50, the water to be treated containing mixed components is supplied to the first circulation path via the pipe 67, heated by the heat exchangers 65 and 80, and sprayed from the sprayer 66 into the humidification tower 60. . In the humidification tower 60, since the carrier gas is supplied and the water to be treated heated through the first circulation path is sprayed, the water to be treated is brought into contact with the carrier gas and the water to be treated by gas-liquid contact. Part of the water moves to the carrier gas as water vapor. The carrier gas thus humidified is sent to the dehumidifying tower 70 via the pipe 91. If the heating and circulation of the water to be treated and the gas-liquid contact between the water to be treated and the carrier gas are continued, the moisture continuously moves to the carrier gas, so the water in the water to be treated that circulates in the first circulation path. Contaminant concentration increases. Even when the water to be treated that does not contain the mixed component circulates in the first circulation path when the evaporative concentration device is started up, the water to be treated that contains the mixed component is supplied via the pipe 67, thereby As the operation is continued, the concentration of mixed components in the circulating water to be treated becomes higher than the concentration of mixed components in the treated water from the pipe 67. When the mixed component concentration in the treated water becomes higher than a predetermined value, a part of the treated water is discharged from the pipe 64 to the outside as concentrated water with the mixed component concentration increased. Appropriate waste water treatment may be performed on the discharged concentrated water. Alternatively, for example, all of the water to be treated may be discharged from the humidification tower 20 as concentrated water at the end of the evaporation concentration process.

  In the dehumidifying tower 70, the carrier gas humidified from the humidifying tower 60 is supplied via the pipe 91, and the cooling water is circulated through the second circulation path, and the carrier gas and the cooling water sprayed from the sprayer 76 are used. , At least part of the moisture in the carrier gas is condensed and transferred to cooling water. The carrier gas is dehumidified by the condensation of moisture, and the dehumidified carrier gas is discharged to the outside through the pipe 92 as exhaust gas. The cooling water discharged from the pipe 72 gives heat to the water to be treated when passing through the heat exchanger 80, thereby being cooled and circulated to the dehumidifying tower 70. When cooling and circulation of the cooling water and gas-liquid contact between the cooling water and the carrier gas are continued, the water in the carrier gas continuously shifts to the cooling water, so that the amount of the cooling water increases. Since the condensed water from the carrier gas contains almost no mixed components, the increased cooling water also contains almost no mixed components. When the cooling water increases to some extent, a part of the cooling water is discharged to the outside through the pipe 64 as treated water from which the mixed components have been removed. The treated water may be directly discharged from the water storage unit 71 of the dehumidifying tower 70.

  When the evaporative concentration apparatus is not operated, the on-off valves 37 and 38 are closed, the bypass valve 31 is opened, and hot water from the drain tank 23 does not flow into the pipe 32 but directly from the pipe 24 to the condenser 17 or the pipe 27. To be returned. Further, when an abnormality occurs in the circulation of the heat medium between the heat exchanger 33 and the heat exchanger 65, or when leakage of water to be treated from the evaporation concentrator is suspected, specifically, the head tank 36 is used. When the liquid level fluctuates at the time point, or when the conductivity value detected by the conductivity meter 39 exceeds the specified value, the on-off valves 37 and 38 are immediately closed and the bypass valve 31 is opened, and the evaporation concentrator Be disconnected from the power generation equipment. Therefore, a detection result from a sensor (not shown) that detects the liquid level in the head tank 36 and a detection result from the conductivity meter 39 are input, and when the liquid level fluctuation is detected or the conductivity value exceeds a specified value. It is preferable to provide a control device (not shown) that closes the on-off valves 36 and 37 and opens the bypass valve 31 at the time. By separating the evaporation concentrating device from the power generation facility when an abnormality is detected, it is possible to reliably prevent the water to be treated on the evaporation processing device side from being mixed into the boiler circulating water.

Here, heat transfer in the evaporative concentration apparatus shown in FIG. 2 will be described. The heat exchanger 65 is indirectly heated by the hot water from the drain tank 23, and the water to be treated is heated by passing through the heat exchanger 65. Temperature of the water to be treated at the exit of the secondary side of the heat exchanger 65, i.e., the temperature of the water to be treated is sprayed from the sprayer 66 to T _1. By spraying the water to be treated in the humidifying tower 61 and transferring a part of the water in the water to be treated to the carrier gas, heat exchange with the latent heat of vaporization and the carrier gas, new water to be treated supplied from the pipe 67 and The temperature of the water to be treated is lowered due to the mixing. When the temperature of the water to be treated in the pipe 62 is T ₂ , T ₁ > T ₂ . This treated water is heated by the heat exchanger 80. When the temperature of the water to be treated at the secondary outlet of the heat exchanger 80 is T ₃ , T ₁ > T ₃ > T ₂ . On the other hand, regarding the cooling water, the temperature of the cooling water at the outlet on the primary side of the heat exchanger 80 is T ₄ . The temperature T ₄ is the temperature of the cooling water sprayed on the carrier gas in the dehumidifying tower 70. In the dehumidifying tower 70, moisture in the carrier gas is condensed by cooling the carrier gas. Therefore, if the temperature of the cooling water flowing from the dehumidifying tower 70 to the pipe 72 is T ₅ , the carrier gas is brought in from the humidifying tower 60. T ₅ > T ₄ due to sensible heat and latent heat of condensation. Further, T ₅ > T ₃ and T ₄ > T ₂ are established between the primary side and the secondary side of the heat exchanger 80.

  Here, the improvement of the thermal efficiency by operating the evaporative concentration apparatus of this embodiment is demonstrated. First, hot water stored in the drain tank 23 from the low-pressure feed water heater 19 in the conventional general power generation facility shown in FIG. 1 will be described. The hot water supplied to the drain tank 23 is returned to the condenser 17 or the pipe 27 via the pipe 24. During normal operation of the power generation equipment, hot water is often returned from the pipe 24 to the pipe 27 via the valve 26. In this case, there is almost no loss of heat as a whole of the power generation equipment. On the other hand, hot water is often returned from the pipe 24 to the condenser 17 through the valve 25 when the power generation facility is started up. In this case, the returned hot water is cooled in the condenser 17. For this reason, heat loss is generated in the entire power generation facility.

  On the other hand, when the hot water from the drain tank 23 is used as a heat source of the evaporation concentrator through the pipe 32 in the power generation facility of this embodiment shown in FIG. Is determined on the same basis as the conventional power generation facility shown in FIG. Here, when hot water is returned to the condenser 17 via the pipe 32 and the pipe 24, the temperature of the hot water is lowered by indirectly applying heat to the heat exchanger 65 via the heat exchanger 33. Therefore, only the heat load cooled in the condenser 17 is reduced. Therefore, there is no change in the loss of heat generated as a whole of the power generation equipment compared to the conventional one, and the heat energy can be used efficiently. On the other hand, when the hot water from the pipe 32 is returned to the pipe 27, the temperature of the hot water is reduced due to the indirect heat applied to the heat exchanger 65, resulting in a loss of heat for the entire power generation facility. It is necessary to newly generate heat in the boiler 12 for the amount used in the evaporative concentration apparatus. However, since the boiler 12 used as the main steam source in the power generation facility generally has high thermal efficiency, even in this case, high thermal efficiency is maintained as a whole of the power generation facility including the evaporation concentrator, and the evaporation concentration process is performed. The additional cost of can be minimized.

  In the evaporative concentration apparatus shown in FIG. 2, a heat exchanger 80 is provided for exchanging heat between the water to be treated flowing in the first circulation path and the cooling water flowing in the second circulation path. If a mechanism for cooling the cooling water flowing through the circulation path is provided, the heat exchanger 80 may not be provided. Furthermore, when a large amount of cooling water can be secured, the cooling water is supplied from the outside to the dehumidifying tower 70 without providing the second circulation path, and the cooling water flowing out from the dehumidifying tower 70 including condensed water is discharged as it is. It is also possible to do.

  In the above-described embodiment, the two heat exchangers 33 and 65 are used to reliably prevent ionic impurities and the like contained in the water to be treated in the evaporative concentration apparatus from leaking into the boiler circulating water system of the power generation facility. The to-be-processed water which flows through a 1st circulation path indirectly is heated using. When sufficient reliability of the heat exchanger is ensured, only the heat exchanger 65 in which the water to be treated flows on the secondary side is provided, and the hot water flowing in the pipe 24 with respect to the primary side of the heat exchanger 65 Although it is not impossible to supply the water directly, even in that case, the downstream side of the primary side of the heat exchanger 65 that is the heating means, that is, the hot water after the heat is supplied to the heating means It is desirable to monitor the leak of ionic impurities by providing a conductivity meter at the flowing position.

DESCRIPTION OF SYMBOLS 12 Boiler 13 High pressure turbine 14 Medium pressure turbine 15 Low pressure turbine 17 Condenser 19 Low pressure feed water heater 23 Drain tank 30 Connection part 31 Bypass valve 33,65,80 Heat exchanger 36 Head tank 39 Conductivity meter 50 Main part 60 Humidification Tower 70 Dehumidification Tower

Claims (11)

An evaporative concentration apparatus that is provided in a power generation facility and performs evaporative concentration processing on water to be treated containing mixed components,
A humidifying tower that is supplied with a carrier gas and water to be treated to bring the carrier gas and the water to be treated into gas-liquid contact, and humidifies and discharges the carrier gas;
A dehumidifying tower that generates and discharges a dehumidified carrier gas by bringing the humidified carrier gas and cooling water into gas-liquid contact to cool the humidified carrier gas and condensing at least part of the moisture. When,
A first circulation path for circulating the treated water to the humidification tower;
Heating means for heating the water to be treated;
Have
The said heating means is an evaporative concentration apparatus which heats the said to-be-processed water by using the hot water discharged | emitted from the feed water heater of the said power generation equipment as a heat source. Returning the hot water discharged from the feed water heater into the power generation facility,
The evaporative concentration apparatus according to claim 1, further comprising a conductivity meter provided at a position where the hot water flows after supplying heat to the heating means. A bypass valve provided in a pipe for circulating the hot water in the power generation facility;
Piping for heating connected to both ends of the bypass valve;
With
The evaporative concentration apparatus according to claim 2, wherein the water to be treated is heated using the hot water flowing through the heating pipe as a heat source.   The said bypass valve is opened when the conductivity value detected with the said conductivity meter exceeds predetermined value, The path | route of the said hot water is switched to the path | route which passes along the said bypass valve from the said heating piping. Evaporative concentration device. A first heat exchanger is provided in the heating pipe;
The said heating means has a 2nd heat exchanger with which the heat medium heated by the said 1st heat exchanger circulates, and heats the to-be-processed water with the heat | fever of the said heat medium. The evaporative concentration apparatus according to 3 or 4.   The evaporative concentration apparatus according to claim 5, wherein the conductivity meter is provided downstream of the first heat exchanger in the heating pipe.   The evaporative concentration apparatus according to claim 5 or 6, wherein a head tank is provided in a path of the heat medium that circulates between the first heat exchanger and the second heat exchanger.   The evaporative concentration apparatus according to claim 7, wherein the bypass valve is opened based on a liquid level fluctuation in the head tank, and the path of the hot water is switched from the heating pipe to a path passing through the bypass valve.   The treated water is supplied to the humidification tower via the first circulation path, and at least a part of the water flowing out of the humidification tower is discharged as concentrated water containing the mixed components. The evaporative concentration apparatus according to any one of the above.   Power generation equipment provided with the evaporative concentration apparatus of any one of Claims 1 thru | or 9. An evaporative concentration method for evaporating and concentrating water to be treated containing mixed components in a power generation facility,
A carrier gas and water to be treated are supplied to bring the carrier gas and the water to be treated into gas-liquid contact, and a humidifying tower for humidifying and discharging the carrier gas, and the humidified carrier gas and cooling water are gasified. A dehumidifying tower for generating and discharging a dehumidified carrier gas by cooling the humidified carrier gas by liquid contact and condensing at least part of the water, and the water to be treated with respect to the humidifying tower A carrier gas evaporator having a first circulation path for circulating
An evaporative concentration method in which the water to be treated is heated in the carrier gas evaporator using hot water discharged from a feed water heater of the power generation facility as a heat source.

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