JP2012241646A - System and method for recovering and utilizing steam in exhaust - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recover steam contained in the exhaust gas discharged from a vehicle to be utilized as a water supply source in an area in short of water.SOLUTION: A system for recovering steam in exhaust is provided with a steam recovery device 42 which cools the exhaust gas e, condenses the steam included in the exhaust gas e, and recovers it into the exhaust pipe 16 of a vehicle 10; and a water tank 46 which pools the recovered water. A general water control center 50 obtains first information on the pooled water amount and the position information of a vehicle 10A from the running vehicle 10A whose pooled water amount of the water tank 46 exceeds a threshold value, and second information on the pooled water amount and the availability of receiving the recovered water from gas stations 60A and 60B provided with a recovered water pool tank 62, selects a gas station for unloading the recovered water, and instructs the vehicle 10A to unload the recovered water to the gas station.

Description

  The present invention relates to a method for recovering moisture contained in exhaust gas discharged from an engine of a vehicle and effectively using the recovered water, and a system for implementing the method.

When fuel is burned by the vehicle engine, harmful components such as CO, CO ₂ , HC, NO _X are discharged from the exhaust. Engine fuels are hydrocarbons or alcohols, and therefore contain C, H, and O as the main components. For this reason, H ₂ O is also generated by the reaction of H and O, but is released into the atmosphere as water vapor.

  On the other hand, water resources are unevenly distributed in the world like oil, and it is expected that securing water resources on a global scale will be essential in the future. Currently, the water vapor contained in the exhaust gas discharged from vehicles is released to the atmosphere. If this is condensed and collected, and harmful components are removed, water can be used in countries where motorization has developed even in regions where water shortages have occurred. Could be a source of

In Patent Document 1, water vapor contained in exhaust gas discharged from an engine of a vehicle is recovered, the recovered water is stored in a water tank mounted on the vehicle, and supplied to a NO _X selective reduction catalyst provided in an exhaust path. A technique for use as diluted water for high-concentration urea water is disclosed.

JP 2008-280856 A

The technique disclosed in Patent Document 1 only uses the recovered water recovered from the exhaust of the vehicle engine for the NO _X selective reduction catalyst provided in the same vehicle, and the application is limited. It is not intended to be widely available for outside use. In order to use the recovered water widely for industrial water, domestic water, etc. in the region, it is necessary to consider a collection and delivery system and a reprocessing system for the recovered water.

  In view of the problems of the prior art, the present invention recovers water vapor contained in exhaust discharged from the engine of a vehicle, and makes it widely available for use outside the vehicle as a water supply source in an area where water tends to be insufficient. For the purpose.

  In order to achieve the above object, a moisture recovery and utilization system according to the present invention is provided in an exhaust pipe of an engine, a steam recovery apparatus that cools exhaust passing through the exhaust pipe and condenses and recovers steam in the exhaust, And a vehicle having a water tank for storing the recovered water recovered by the water vapor recovery device, a storage facility having a recovered water storage tank capable of storing the recovered water, water storage amount information of the water tank, and a recovered water storage tank And a management center that transmits to the vehicle the information on whether or not to accept the collected water in the collected water storage tank based on the stored water volume information, and unloads the recovered water from the vehicle to the collected water storage tank based on the information from the management center. It is what I did.

  In the present invention, when the amount of collected water collected from the exhaust in the vehicle and stored in the water tank mounted on the vehicle exceeds the threshold value, it is collected in the collected water storage tank of the selected storage facility according to the instruction of the management center. Try to unload the water. Unloaded recovered water removes harmful components at a storage facility or a water treatment plant, and is distributed to users according to the degree of purification. As a result, a recovered water storage tank that can store water can be specified, and the recovered water can be unloaded efficiently. In addition, the unloading of the collected water to the storage facility can be carried out systematically and efficiently, and can be supplied to a place where water is most needed at a low cost. The storage facility refers to a gas station, an industrial water plant, a storage tank provided in each household, and the like.

  In the present invention, the management center receives the collected water from the vehicle having a water tank storage amount exceeding a threshold value from the storage facility having the recovered water storage tank and the first information related to the water storage amount and the position information of the own vehicle. Receiving the amount of water stored in the storage tank and the second information regarding whether or not to accept the collected water, and based on the first information and the second information, select a storage facility that accepts the recovered water, and select the selected storage facility and the storage It is good to send the 2nd information of a facility to a vehicle. In this way, the management center that has obtained the first information and the second information selects a storage facility for unloading the recovered water, and instructs the vehicle to unload to the gas station.

  As a result, the recovered water unloaded in the recovered water storage tank of the storage facility removes harmful components at a gas station, a water treatment facility of an industrial water plant or a water treatment plant, and is distributed to the users according to the degree of purification. . As a result, the unloading of the recovered water to the storage facility can be performed systematically and efficiently throughout the region. Moreover, it can be supplied at a low cost to a place where water is most needed.

  In the present invention, preferably, the vehicle includes an air conditioner, and the water vapor recovery apparatus includes a heat exchange unit that exchanges heat between the exhaust and the refrigerant on the downstream side of the expansion valve of the air conditioner. It may be configured to absorb. As a result, the exhaust cooling effect can be increased, and the existing air conditioner provided in the vehicle can be used as the exhaust cooling source, so that it is not necessary to install new equipment and can be realized at low cost.

  Further, in the present invention, a thermoelectric conversion element device is provided in the exhaust pipe upstream from the installation position of the water vapor recovery device, and electric power is generated by the retained heat of the exhaust gas in the thermoelectric conversion element device, and the generated electric power is supplied to the vehicle. It may be configured to store electricity in an on-board battery. As a result, the thermoelectric conversion element device can be used as a cooling source for exhaust gas, and not only can recovered water be stored, but also storage can be performed with the retained heat of the exhaust gas, and power can be supplied to equipment necessary for the vehicle.

  The method of recovering and using water vapor in exhaust gas according to the present invention suitable for use in the system of the present invention comprises cooling exhaust gas discharged from an engine of a running vehicle, condensing and recovering water vapor in the exhaust gas, and mounted on the vehicle. A first step of storing in a water tank, a second step in which a vehicle whose water storage amount exceeds a threshold value sends a first information related to the storage amount and position information of the own vehicle to a management center, and a recovered water storage Based on the first information and the second information in the third step of sending the second information regarding the storage amount of the recovered water storage tank and the acceptability of the recovered water from the storage facility including the tank to the management center, and the management center Selecting a storage facility that receives the recovered water, and sending the recovered water of the vehicle to the recovered water storage tank of the selected storage facility, and the fourth step of sending the storage facility selected to the vehicle and the second information of the storage facility. 5th step to take down, or It become one.

  In the method of the present invention, the management center that obtains the first information and the second information selects a storage facility for unloading the recovered water, and instructs the vehicle to unload the storage facility. In this way, the unloaded recovered water removes harmful components at a storage facility, a water treatment facility of an industrial water plant, a water treatment plant, or the like, and is distributed to the user according to the degree of purification. As a result, the unloading of the recovered water to the storage facility can be performed systematically and efficiently throughout the region. Moreover, it can be supplied at a low cost to a place where water is most needed.

  In the method of the present invention, the step of transferring the recovered water collected in the recovered water storage tank of the storage facility to the water treatment plant, the step of purifying the recovered water at the water treatment plant, and the step of supplying the purified water to the user And may be further provided. Thereby, the purified recovered water can be supplied to the user. Moreover, it can distribute to the place which can be used according to the purification degree of recovered water.

  According to the recovery and utilization system of the present invention, a steam recovery device that is provided in an exhaust pipe of an engine and cools exhaust gas passing through the exhaust pipe and condenses and recovers water vapor in the exhaust gas, and is recovered by the water vapor recovery device. Recovery based on a vehicle equipped with a water tank for storing the recovered water, a storage facility equipped with a recovered water storage tank capable of storing the recovered water, and information on the amount of stored water in the water tank and information on the amount of stored water in the recovered water storage tank It has a management center that transmits information on whether or not to collect the collected water in the water storage tank to the vehicle. Based on the information from the management center, the recovered water from the vehicle is unloaded to the recovered water storage tank. Since the storage facility for unloading the recovered water is designated, the unloading of the recovered water to the gas station can be performed systematically and efficiently throughout the area. Moreover, it can be supplied at a low cost to a place where water is most needed.

  Therefore, in areas where water is scarce, motorization can be used to obtain petroleum fuel-derived water to make up for water scarcity.

  According to the method of the present invention, the first step of cooling the exhaust discharged from the engine of the running vehicle, condensing and recovering the water vapor in the exhaust, and storing it in the water tank mounted on the vehicle, A second step in which a vehicle whose water storage amount exceeds a threshold value sends first information related to the water storage amount and position information of the own vehicle to a management center, and a storage facility equipped with a recovery water storage tank, Based on the first information and the second information, the storage facility that accepts the recovered water is selected based on the first information and the second information, and the vehicle is selected as the vehicle. A fourth step of sending the second information of the storage facility and the storage facility, and a fifth step of unloading the recovered water of the vehicle to the recovered water storage tank of the selected storage facility, the first information and Management center obtaining second information Selects a storage facility for unloading the recovered water, with respect to the vehicle. Thus instructed to unload the the accumulating facility, it is possible to obtain the same effects as the present invention method.

1 is a plan view cross-sectional view of a vehicle according to a first embodiment of the method and system of the present invention. It is a block diagram which shows the whole structure of the said 1st Embodiment. It is a block diagram which shows the communication system of the said 1st Embodiment. It is a top view sectional view of the vehicles concerning a 2nd embodiment of the method and system of the present invention. It is front view explanatory drawing which shows a part of vehicle which concerns on 3rd Embodiment of this invention method and system.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.

(Embodiment 1)
A first embodiment of the method and system of the present invention will be described with reference to FIGS. In FIG. 1, an engine 12 is mounted on a vehicle body front portion 10 a inside a vehicle body of a vehicle 10, and an intake pipe 14 and an exhaust pipe 16 are connected to the engine 12. A supercharger 18 is provided across the intake pipe 14 and the exhaust pipe 16, the supercharger 18 is driven by the exhaust e exhausted from the engine 12, and the intake air a is pressurized to the intake pipe 14 by the supercharger 18. Supplied. The drive of the engine 12 is controlled by an ECU (Engine Control Unit) 19. The output of the engine 12 is transmitted to the front wheels 24 via the torque converter 20, the differential device 22 and the axle 23.

Further, the rotational force of the engine 12 is transmitted to the generator 28 via the belt 26, and the generator 28 is rotated to generate electric power. The electric power is stored in the battery 30 and used for other uses of the vehicle 10. . In the middle of the exhaust pipe 16, the exhaust purification device 32 is provided to remove CO and NO _X in the exhaust at the exhaust purification device 32.

  A rear wheel 34 and a fuel tank 36 that supplies fuel to the engine 12 via a fuel supply pipe 38 are provided at the rear portion 10 b of the vehicle body. The exhaust pipe 16 is provided with a muffler 40, and the exhaust pipe 16 downstream of the muffler 40 is provided with a water vapor recovery device 42 that cools the exhaust e and condenses and recovers the water vapor contained in the exhaust e. . A water tank 46 is mounted on the vehicle 10, and the recovered water recovered by the water vapor recovery device 42 is sent to the water tank 46 via the conduit 44 and stored.

  The amount of water collected in the water tank 46 (water storage amount) can be detected by a water amount sensor (not shown) installed in the water tank 46. The in-vehicle computer constituting the ECU 19 mounted on the vehicle 10 manages the amount of water stored in the water tank 46 by acquiring the detection value of the water amount sensor at regular or irregular timings.

  In FIG. 2, a general water management center 50 is provided at an appropriate place, and a water storage tank 62 for receiving and collecting the collected water collected by the vehicle 10 is provided at each of the gas stations 60A and 60B. When the amount of collected water in the water tank 46 exceeds a threshold value, the traveling vehicle 10 notifies the general water management center 50 of the position information of the own vehicle and the first information related to the amount of stored water. Specifically, in the communication of the first information, the in-vehicle computer that constitutes the ECU 19 acquires the stored water amount value from the water amount sensor installed in the water tank 46 and compares it with a threshold value stored in advance in a memory or the like. It is better to do it automatically.

  In each gas station 60A, 60B, the general water management center 50 is notified of the 2nd information regarding the water storage amount of the water storage tank 62, and the acceptability of collection | recovery water. The second information at the gas stations 60A and 60B is also communicated with the integrated water management center 50 via the communication network using an information terminal such as a personal computer installed at the gas stations 60A and 60B. It is good to.

  The general water management center 50 manages the amount of water stored in the water storage tank 62 of each gas station, and instructs the vehicle 10 that needs to unload the recovered water to which gas station the recovered water should be unloaded. . On the side of the vehicle 10 that has received the instruction, the instruction content may be displayed on a screen such as a navigation, for example, to encourage the driver to unload the collected water. Specifically, the position of the gas station that can be unloaded on the map around the vehicle 10 may be displayed.

  In FIG. 3, the structure of the communication means constructed | assembled among the comprehensive water management center 50, the vehicle 10, and the gas station 60 is shown. In FIG. 3, the vehicle 10 includes a GPS signal receiver 110 and a communication unit 112. The GPS signal receiver 110 receives the vehicle position information from the GPS communication satellite 70. The traveling vehicle 10 receives the first information such as the position information and the amount of water stored in the water tank 46 from the communication unit 112 via the receiving antenna 72 and the network circuit 74 installed in the relay base station. 50 to the management server 52 provided in

  In each gas station 60, the second information such as the position information of the gas station and the amount of water stored in the water storage tank 62 is sent to the management server 52 of the general water management center 50 through the same communication path. In the management server 52, the information transmitted from the vehicle 10 and the gas station 60 is stored in the storage unit 54. The position detection unit 56 of the management server 52 detects the positions of the traveling vehicles 10 and the gas stations 60 from the information stored in the storage unit 54.

  The determination means 58 designates the nearest gas station from the information sent from the vehicle 10 and the gas station 60 to the vehicle 10A to which the recovered water in the water tank 46 is to be unloaded, and loads the recovered water at the gas station. Instruct to take down. The instructed vehicle 10A moves toward the designated gas station, and unloads the recovered water to the water storage tank 62 at the gas station. FIG. 2 shows a state in which the vehicle 10B unloads the collected water at the gas station 60A and the vehicle 10C unloads the collected water at the gas station 60B.

  In FIG. 2, when the water tank 62 of the gas station is full, for example, in the gas station 60A in which the water tank 62 does not have a neutralization cleaning function, the stored water is sent to the water treatment plant 76 by a pipe line or other transportation means. The water treatment plant 76 is neutralized and cleaned to remove harmful components derived from fuel and lubricating oil, such as sulfur and phosphorus. Next, this treated water is purified until it becomes usable as clean water at the water purification plant 78. The purified water purified at the water purification plant 78 is supplied to the drinking water use destination 82 of each household.

  In the gas station 60B in which the water storage tank 62 is neutralized and cleaned, after the water is neutralized and cleaned in the gas station 60B, the stored water is supplied to the water purification plant 78 or the middle water supply facility 80 by a pipe or other transportation means. Transport. The purified water purified at the water purification plant 78 is supplied to the drinking water use destination 82, and the purified water purified at the drinking water supply facility 80 is supplied to the drinking water use destination 84 such as a factory.

  According to this embodiment, unloading of recovered water to a gas station can be performed systematically and efficiently throughout the region. Moreover, it can be supplied at a low cost to a place where water is most needed. For example, in the integrated water management center 50, the amount of water stored in the water storage tank 62 at each gas station 60A, 60B is managed via a communication network, so that the vehicle 10 is given priority to the gas stations 60A, 60B that have a margin in the water storage tank 62. It is possible to realize systematic and efficient management such as guiding the vehicle 10 to the gas stations 60A and 60B in an area where water shortage is serious. Therefore, in areas where water is scarce, motorization can be used to obtain petroleum fuel-derived water to make up for water scarcity.

  Further, since the recovered water stored in the recovered water storage tank 62 of the gas stations 60A and 60B is purified at the gas stations 60A and 60B or the water treatment plant 76 and the water purification plant 78, the degree of purification of the purified water is increased. Accordingly, it can be efficiently distributed where it can be used.

(Embodiment 2)
Next, a second embodiment of the method and the system of the present invention will be described with reference to FIG. In FIG. 4, an engine 88 is provided at the front part inside the vehicle body of the vehicle 86, and the exhaust pipe 16 connected to the engine 88 extends to the rear part. As in the first embodiment, the exhaust pipe 16 is provided with an exhaust purification device 32, a muffler 40, and a water vapor recovery device 42 in order from the front. An air conditioner 90 driven by the engine 88 is installed in the vicinity of the engine 88.

  The air conditioner 90 is configured such that a compressor 92 driven by the output of an engine 88, a condenser 94, an expansion valve 96, and an evaporator 98 are interposed in a refrigerant circulation path 91. The refrigerant circulation path 91 is branched into two branch paths 91a and 91b on the downstream side of the expansion valve 96, an evaporator 98 is provided in the branch path 91a, and the branch path 91b is extended to the rear part of the vehicle body. It is connected to the. On the downstream side of the evaporator 98 and the water vapor recovery device 42, the branch paths 91 a and 91 b are joined and then connected to the condenser 94. Other configurations are the same as those of the first embodiment.

  In the present embodiment, a refrigerant on the downstream side of the expansion valve 96 is used as a cooling source for cooling the exhaust e by the water vapor recovery device 42, heat is exchanged between the refrigerant and the exhaust e, and the exhaust e is cooled by the latent heat of vaporization of the refrigerant. ing. Therefore, the cooling effect of the exhaust e can be improved, and the amount of recovered water from the exhaust e can be increased. Further, since the refrigerant of the air conditioner 90 is used as a cooling source, there is an advantage that an existing air conditioner can be used as a cooling source without adding new equipment.

(Embodiment 3)
Next, a third embodiment of the method and system of the present invention will be described with reference to FIG. In this embodiment, a thermoelectric conversion element device 102 is provided in the exhaust pipe 16 in the rear portion 100 b of the vehicle 100, downstream of the muffler 40 and upstream of the water vapor recovery device 42. The thermoelectric conversion device 102 is a device capable of generating a current due to a temperature difference between an inlet and an outlet of the current by passing a current through a material having a remarkable Seebeck effect or a Peltier effect. A current is generated in the material constituting the thermoelectric conversion element device 102 by the retained heat of the exhaust e, and the current can be taken out. Other configurations are the same as those of the first embodiment.

In the present embodiment, the thermoelectric conversion element device 102 can generate a current using the retained heat of the exhaust e and store the current in the existing battery 30 via the cable 104.
According to the present embodiment, in addition to the operational effects obtained in the first embodiment, the exhaust e can be cooled by the thermoelectric conversion element device 102, so that the cooling effect of the exhaust e can be further increased, and the thermoelectric conversion element device. 102 can generate power. Then, by storing the generated power in the battery 30, it can be effectively used for other devices of the vehicle 100.

  ADVANTAGE OF THE INVENTION According to this invention, water can be collect | recovered from the exhaust_gas | exhaustion exhausted from a vehicle, and the collect | recovered water can be widely utilized for local demand as a water resource.

10, 10A, 10B, 10C, 86, 100 Vehicle 110 GPS signal receiver 112 Communication unit 10a Vehicle body front portion 10b, 100b Vehicle body rear portion 12, 88 Engine 14 Intake pipe 16 Exhaust pipe 18 Supercharger 20 Torque converter 22 Differential device 23 Axle 24 Front wheel 26 Belt 28 Generator 30 Battery 32 Exhaust purification device 34 Rear wheel 36 Fuel tank 38 Fuel supply pipe 40 Muffler 42 Water vapor recovery device 44 Pipe line 46 Water tank 50 General water management center 52 Management server 54 Storage unit 56 Position detection Means 58 Judgment means 60, 60A, 60B Gas station 62 Recovered water storage tank 70 GPS communication satellite 72 Receiving antenna 74 Network circuit 76 Water treatment plant 78 Water treatment plant 80 Middle water supply facility 82 Where water is used 84 Where water is used 84 0 air conditioner 91 refrigerant circulation channel 91a, 91b branch passage 92 compressor 94 condenser 96 expansion valve 98 evaporator 102 thermoelectric conversion element 104 cable a suction e exhaust

Claims (6)

Provided in an exhaust pipe of an engine, provided with a water vapor recovery device that cools exhaust gas passing through the exhaust pipe and condenses and recovers water vapor in the exhaust gas, and a water tank that stores recovered water recovered by the water vapor recovery device A vehicle,
A storage facility with a recovered water storage tank capable of storing recovered water;
A management center that transmits information on whether to accept the collected water in the recovered water storage tank to the vehicle based on the stored water volume information of the water tank and the stored water volume information of the recovered water storage tank;
A system for recovering and using water vapor in exhaust gas, wherein the recovered water of the vehicle is unloaded from the recovered water storage tank based on information from the management center. The management center
From the vehicle in which the amount of water stored in the water tank exceeds a threshold, first information relating to the amount of water stored and the position information of the own vehicle, and from the storage facility provided with the recovered water storage tank, the amount of water stored in the recovered water storage tank Receiving the second information regarding whether or not to accept the recovered water, selecting a storage facility that receives the recovered water based on the first information and the second information, and the selected storage facility and the second information of the storage facility The exhaust water vapor recovery and utilization system according to claim 1, wherein:   The vehicle includes an air conditioner, and the water vapor recovery apparatus includes a heat exchange unit that exchanges heat between the exhaust and the refrigerant on the downstream side of the expansion valve of the air conditioner, and is configured to absorb the latent heat of evaporation of the refrigerant from the exhaust. The system for recovering and using steam in exhaust gas according to claim 1 or 2, wherein   A thermoelectric conversion element device is provided in the exhaust pipe upstream from the installation position of the water vapor recovery device, electric power is generated by the retained heat of the exhaust gas in the thermoelectric conversion element device, and the generated electric power is supplied to a battery mounted on the vehicle. The system for recovering and using steam in exhaust gas according to any one of claims 1 to 3, wherein the system is configured to store electricity. A first step of cooling exhaust gas discharged from an engine of a running vehicle, condensing and collecting water vapor in the exhaust gas, and storing it in a water tank mounted on the vehicle;
A second step in which a vehicle in which the amount of water stored in the water tank exceeds a threshold value sends first information related to the amount of stored water and the position information of the own vehicle to a management center;
A third step of sending, from a storage facility equipped with a recovered water storage tank, second information regarding the storage amount of the recovered water storage tank and whether or not to accept the recovered water to the management center;
A fourth step of selecting, at the management center, a storage facility that receives the recovered water based on the first information and the second information, and sending the storage facility selected to the vehicle and the second information of the storage facility; ,
And a fifth step of unloading the recovered water of the vehicle to the recovered water storage tank of the selected storage facility.   A step of transferring the collected water collected in the collected water storage tank of the storage facility to a water treatment plant, a step of purifying the collected water at the water treatment plant, and a step of supplying the purified water to the user The method for recovering and using water vapor in exhaust gas according to claim 5, comprising:

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