WO2011004866A1 - 蒸気供給装置 - Google Patents
蒸気供給装置 Download PDFInfo
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- WO2011004866A1 WO2011004866A1 PCT/JP2010/061628 JP2010061628W WO2011004866A1 WO 2011004866 A1 WO2011004866 A1 WO 2011004866A1 JP 2010061628 W JP2010061628 W JP 2010061628W WO 2011004866 A1 WO2011004866 A1 WO 2011004866A1
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- steam
- pressure
- temperature
- heat collector
- solar heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T19/00—Manipulating 3D models or images for computer graphics
- G06T19/006—Mixed reality
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B3/00—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass
- F22B3/04—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators
- F22B3/045—Other methods of steam generation; Steam boilers not provided for in other groups of this subclass by drop in pressure of high-pressure hot water within pressure- reducing chambers, e.g. in accumulators the drop in pressure being achieved by compressors, e.g. with steam jet pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/14—Combinations of low and high pressure boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S90/00—Solar heat systems not otherwise provided for
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/011—Arrangements for interaction with the human body, e.g. for user immersion in virtual reality
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/0304—Detection arrangements using opto-electronic means
- G06F3/0325—Detection arrangements using opto-electronic means using a plurality of light emitters or reflectors or a plurality of detectors forming a reference frame from which to derive the orientation of the object, e.g. by triangulation or on the basis of reference deformation in the picked up image
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Definitions
- the present invention relates to a steam supply device. More specifically, the present invention relates to a steam supply device used for supplying steam (process steam) used in factories or buildings.
- This application claims priority on July 10, 2009 based on Japanese Patent Application No. 2009-163385 for which it applied to Japan, and uses the content here.
- boilers When using steam (steam) or steam using equipment that uses the heat in factories or buildings, boilers such as small once-through boilers are widely used as the source of steam (process steam). .
- boilers having a standard exceeding the pressure and temperature conditions of steam required by the equipment using steam are conventionally used.
- the steam generated in the boiler is supplied to the steam using equipment after being depressurized and reduced to a predetermined pressure and temperature condition required by the steam using equipment.
- An example of a conventionally used steam supply method is shown in FIG.
- a required pressure reducing valve 2 is connected to the downstream side of the steam outlet 1 a in the boiler 1.
- the pressure reducing valve 2 is appropriately depressurized using the pressure reducing valve 2, for example, a predetermined required by the steam using device 4 such as 0.2 MPa, 130 ° C.
- the pressure and temperature are reduced to a pressure and temperature that meet the pressure and temperature conditions.
- This reduced-pressure, reduced-temperature steam (process steam) 3 a is supplied to the steam-using device 4.
- a method shown in FIG. 7 has been conventionally proposed as a method for generating process steam in a factory or the like (see, for example, Patent Document 1).
- a generator 5 an internal combustion engine 6 for driving the generator 5, a steam generation unit 7 that recovers exhaust heat from the internal combustion engine 6 and generates steam, and a steam generation boiler 8.
- an ejector (injector) 11 is used in which the high-pressure steam 9 generated by the steam generation boiler 8 is used as a driving flow and the low-pressure steam 10 generated by the steam generation unit 7 is a secondary flow.
- the exhaust heat of the internal combustion engine 6 when the generator 5 is driven to generate electric power is recovered, and the low pressure steam 10 is generated by the steam generation unit 7.
- the low pressure steam 10 is sucked into the ejector 11 and mixed with the high pressure steam 9 from the steam generating boiler 8.
- a process steam 12 is generated by mixing the low-pressure steam 10 and the high-pressure steam 9.
- Patent Document 2 proposes a cogeneration evaporative cooling engine.
- high-pressure steam is generated by heat exchange between the exhaust gas of the gas engine and water.
- a steam ejector is disposed in a high-pressure steam line through which high-pressure steam is transported.
- the steam ejector is connected to a jacket portion provided on the outer periphery of the engine.
- a water supply pipe is connected to the jacket portion, and engine cooling water is supplied.
- the engine coolant supplied to the jacket is heated by cooling the engine.
- the steam ejector When the high-pressure steam passes through the steam ejector, the steam ejector becomes negative pressure, and the inside of the jacket portion connected to the steam ejector is in a reduced pressure state below atmospheric pressure. When the inside of the jacket portion is in a reduced pressure state, the cooling water heated by cooling the engine is vaporized to become steam. This cooling water vapor is sucked into the steam ejector and mixed with the high pressure steam to generate medium pressure steam.
- Patent Document 3 proposes a method for improving the overall efficiency in the cogeneration system.
- medium pressure steam is generated by the same method as the evaporative cooling engine proposed in Patent Document 2. That is, high-pressure steam is generated by the waste heat steam boiler using the waste heat of the reciprocating engine. The high-pressure steam generated by the waste heat steam boiler is supplied to the steam ejector. The steam ejector is connected to a vacuum evaporator. Hot water obtained by heat exchange with the cooling water that has cooled the reciprocating engine is supplied to the vacuum evaporator. When high-pressure steam passes through the steam ejector, the steam ejector becomes negative pressure, and the inside of the vacuum evaporator connected to the steam ejector is decompressed.
- Patent Documents 1 to 3 exhaust heat from an internal combustion engine such as an engine is used as a heat source for generating low-pressure steam.
- natural energy such as solar heat
- FIG. 8 An example of such a solar water heater is shown in FIG.
- the solar water heater shown in FIG. 8 includes a hot water tank 13, a heat exchanger 14 provided in the hot water tank 13, a high temperature collector 15 for generating steam by a heat medium and a low temperature heat collector below the hot water tank 13.
- a container 16 is provided.
- the outlet pipe of the heat exchanger 14 is branched in two directions, one connected to the inlet of the high temperature collector 15 and the other connected to the inlet of the low temperature collector 16 via the expansion means 17.
- An inlet of an ejector (injector) 18 is connected to an outlet of the high temperature collector 15.
- the suction port for generating low pressure of the ejector 18 is connected to the outlet of the low-temperature heat collector 16. Furthermore, the outlet of the ejector 18 is connected to the inlet of the heat exchanger 14.
- the liquefied heat medium is accumulated at the bottom of the high temperature collector 15 by its own weight.
- the heat medium evaporates in the high-temperature heat collector 15 and flows into the ejector 18 as high-temperature and high-pressure steam.
- the high-temperature and high-pressure steam flows into the ejector 18, the low-temperature heat collector 16 connected to the suction port of the ejector 18 is depressurized, and the internal steam is sucked into the ejector 18.
- the steam sucked into the ejector 18 is mixed with the high-temperature and high-pressure steam generated by the high-temperature collector 15.
- the mixed vapor stream passes through the outlet of the ejector 18 and enters the heat exchanger 14 to be condensed and liquefied.
- the condensation heat generated at this time increases the water temperature of the hot water storage tank 13 and is stored.
- JP 59-196956 A Japanese Patent No. 2942851 JP 20024943 A Japanese Examined Patent Publication No. 63-13113
- Boilers used to generate steam (process steam) supplied to steam-using equipment used in factories and buildings generate steam by burning fossil fuels. That is, it is difficult to increase energy efficiency because fossil fuels are burned in order to perform low-temperature heating to obtain steam having a temperature of about 100 ° C. to 200 ° C.
- the pressure and temperature of the steam 3 generated in the boiler 1 are set in accordance with predetermined pressure and temperature conditions required by the steam-using device 4 that is used through the pressure reducing valve 2.
- the pressure and temperature of the steam generated in the small boiler 1 are reduced Energy corresponding to the difference between the predetermined pressure and temperature of the steam (process steam) 3a obtained after the pressure is reduced and reduced by the valve 2 is wasted.
- the steam generating unit 7 for recovering exhaust heat of the internal combustion engine 6 for driving the generator 5 and generating low-pressure steam 10 is essential. For this reason, there exists a problem that it can apply only to the factory etc. where the waste heat which can be used for steam generation
- the solar water heater shown in FIG. 8 is for obtaining hot water by increasing the water temperature in the hot water tank 13 using chlorofluorocarbon or the like as a heat medium.
- Various steam using devices used in factories, buildings, etc. It cannot generate steam that can be supplied to the plant.
- a heat collector having a complicated configuration such as a vacuum tube type heat collector or a flat plate type heat collector having a double transmissive body as the high temperature heat collector 15, there is a problem that the cost increases.
- the amount of heat obtained from the solar water heater is highly dependent on the weather. For this reason, when used as a heat source in a factory or the like, a backup heat source capable of supplying 100% of the amount of heat required in the factory or the like even on a day without sunshine is required. Therefore, there is also a problem that the equipment cost increases.
- the present invention provides a predetermined pressure and temperature required for various steam-using devices used in the use place, such as factories and buildings that do not generate exhaust heat that can be used for steam generation.
- a steam supply device that can supply a necessary amount of steam (process steam) having a pressure and temperature that meet conditions, and can reduce facility costs and operation costs.
- a steam supply device includes a steam generator, a steam injector having a steam inlet connected to a steam outlet of the steam generator, and an inlet of the steam injector.
- a steam collector that stores water therein and raises the temperature of the water by natural energy, and a steam using device that is connected to a discharge port of the steam injector, wherein the steam injector includes the steam Driven by steam generated by a generator, and by driving the steam injector, the inside of the heat collector is depressurized to generate steam in the heat collector, the steam supplied from the steam generator, and the collector
- the steam generated in the heater is mixed by the steam injector and supplied to the steam using device.
- the steam generator has a capability of supplying the total amount of steam required by the steam-using device.
- the steam generating device is a high pressure steam generating boiler.
- the heat collector is a solar heat collector.
- the solar heat collector is a closed-loop solar heat collector that circulates a heat medium that rises in temperature by absorption of solar heat, and the heat medium is circulated inside. Raise the temperature of the stored water.
- the steam supply device according to the present invention exhibits the following excellent effects.
- a steam supply device is connected to a steam generator, a steam injector connected to a steam outlet of the steam generator, a suction port of the steam injector, and water inside.
- a heat collector for storing and heating the water by natural energy; and a steam using device connected to a discharge port of the steam injector, the steam injector being driven by steam generated by the steam generator.
- the inside of the heat collector is depressurized to generate steam in the heat collector, the steam supplied from the steam generator, and the steam generated in the heat collector Are mixed with the steam injector and supplied to the steam-using device.
- the amount of steam generated by the steam generator can be made smaller than the amount of steam required by the steam-using device. Therefore, it is possible to reduce the operating cost of the steam generator when supplying steam corresponding to the required amount to the steam-using device.
- the heat collector can store water so that it can boil and evaporate the water stored by being depressurized. (Ii) To the extent that it does not deform even if the inside is depressurized. (Iii) It is only necessary to satisfy a condition that heat taken as evaporation heat when water is evaporated can be collected by heat exchange with the surrounding environment. Therefore, the heat collector is not required to have a complicated structure or an advanced heat insulating structure, and the cost required for the heat collector can be reduced.
- the steam generator included in the steam supply device has the capability of supplying the total amount of steam required by the steam-using device connected to the discharge side of the steam injector.
- the configuration of the steam supply device having the effects (1), (2), (3), (4), and (5) can be easily realized. be able to.
- Solar heat in the solar heat collector is obtained by configuring the solar heat collector in a closed loop configuration in which the temperature of the water stored in the evaporator is raised by circulating the heat medium that rises in temperature by absorbing solar heat.
- the heat collecting function and the evaporation function can be separated.
- the part which makes the said heat medium absorb solar heat, and the said evaporator can each be optimally designed for the solar heat collecting function and the evaporation function.
- the solar heat collector a closed loop type, water is not directly evaporated at the portion where the heat medium absorbs solar heat. For this reason, it is possible to prevent the occurrence of scale in the portion, and it is possible to limit the portion where the generation of scale is a concern to the evaporator. Therefore, the evaporator can be designed in advance so that maintenance at the time of scale generation can be easily performed, and an effect of reducing labor required for maintenance at the time of scale generation can be expected.
- FIG. 1 shows an embodiment of the steam supply device of the present invention.
- a steam inlet 20a of a steam injector 20 is connected via a steam line 21 to a steam outlet 19a of a high-pressure steam generating boiler 19 as a steam generating device that generates high-pressure and high-temperature steam.
- a solar heat collector 22 as a heat collector for heating the water by the heat of the surrounding environment is connected to the suction port 20b of the steam injector 20 via a suction line 23.
- the solar heat collector 22 is installed so that a hollow container that can retain its shape even when the inside is depressurized can be exposed to the sunlight 24.
- the solar heat collector 22 can store water in the container. When the solar light 24 is irradiated, the solar heat collector 22 raises the temperature of the water stored in the container by absorbing energy held by the solar light 24. Can do.
- the solar heat collector 22 desirably has as large an area as possible to receive the sunlight 24 in view of the function of raising the temperature of the water with the energy held by the sunlight 24.
- the solar heat collector 22 has a surface area of the water stored in the container from the viewpoint of increasing the efficiency at the time of evaporating water inside the container that is depressurized by suction by the steam injector 20. It is desirable that the container shape be as large as possible.
- a steam using device 25 is connected to the discharge port 20 c of the steam injector 20 via a steam supply line 26.
- a device that requires steam (process steam) 27a having a pressure and temperature lower than the pressure and temperature of the high-pressure and high-temperature steam 27 generated by the high-pressure steam generating boiler 19 is used.
- the high-pressure steam generating boiler 19 has a capacity capable of supplying the total amount of steam required by the steam using device 25.
- reference numeral 28 indicates steam generated by the solar heat collector 22.
- Reference numeral 29 denotes a cutoff valve provided on the suction line 23.
- the solar heat collector 22 is installed so that the solar heat collector 22 is irradiated with sunlight 24. And the water stored in the inside of this solar-heat collector 22 absorbs the energy of the sunlight 24 with which it is irradiated, and makes it heat up.
- the steam 27 generated by the high-pressure steam generating boiler 19 is guided from the steam outlet 19a to the steam inlet 20a of the steam injector 20 through the steam line 21.
- the steam injector 20 is driven when the steam 27 flowing in from the steam inlet 20a passes to the discharge port 20c side.
- a pressure drop at the suction port 20b occurs.
- the inside of the solar heat collector 22 connected to the suction port 20b is in a reduced pressure (low pressure) state.
- the temperature of the water heated by the energy of the sunlight 24 is less than 100 ° C. which is the boiling point under 1 atm. Even if it exists, the vapor
- the high-pressure and high-temperature steam 27 flowing from the high-pressure steam generating boiler 19 to the steam inlet 20 a and the low-pressure and low-temperature steam 28 sucked from the solar heat collector 22 to the suction port 20 b are mixed.
- medium pressure and medium temperature steam 27a is generated.
- the intermediate pressure and intermediate temperature steam 27a generated by this mixing is increased by the amount of the steam 28 generated in the solar heat collector 22 mixed with the amount of the steam 27 generated in the high pressure steam generating boiler 19, It is supplied from the discharge port 20c to the steam using device 25 through the steam supply line 26.
- the amount of the steam 27 generated by the high-pressure steam generating boiler 19 may be smaller than the amount of steam required by the steam using device 25. For this reason, the amount of fuel required for the operation of the high-pressure steam generating boiler 19 is reduced as compared with the case where the entire amount of steam required by the steam using device 25 is generated.
- the solar heat collector 22 when the solar heat collector 22 is not irradiated with the sunlight 24 due to the influence of the weather or the like, or when the irradiation amount of the sunlight 24 is small, the solar heat collector 22 sufficiently raises the water temperature. I will not be broken.
- the operation of the high-pressure steam generating boiler 19 is strengthened so that the decrease in the low-pressure and low-temperature steam 28 sucked into the steam injector 20 from the solar heat collector 22 can be compensated. What is necessary is just to increase the quantity of the vapor
- the steam 27 generated in the high-pressure steam generating boiler 19 is reduced in pressure and reduced in accordance with the pressure loss when passing through the steam injector 20, and meets the required amount to the steam using device 25. Supplied with steam.
- the steam supply apparatus which concerns on this Embodiment, when sunlight 24 is irradiated to the solar-heat collector 22, and when temperature rising of water is performed by this solar-heat collector 22, it is high-pressure steam
- the amount of steam 27 generated by the generation boiler 19 can be made smaller than the amount of steam required by the steam using device 25. Therefore, the fuel consumption of the high-pressure steam generating boiler 19 when supplying the steam 27a corresponding to the required amount to the steam using device 25 can be reduced, and the operation cost can be reduced.
- the steam 27a having a pressure and temperature that meets the required predetermined pressure and temperature conditions is supplied to the steam-using device 25. Can be supplied according to the required amount.
- the solar heat collector 22 depressurizes the water stored inside by the irradiated sunlight 24 as the pressure of the suction port 20b is reduced due to the driving of the steam injector 20. It is sufficient that the temperature can be raised to a temperature at which boiling and evaporation are possible. For this reason, it is not necessary to set it as a highly advanced heat insulation structure. Therefore, the solar heat collector 22 need not be made of expensive glass or have a complicated structure as long as it can store water and has a strength that does not deform even when the inside is decompressed. For example, a resin-made hollow panel reinforced with ribs whose internal spaces are arranged in parallel at a required interval can be used as the solar heat collector 22. For this reason, the cost which the solar heat collector 22 requires can be reduced significantly compared with the solar heat collector generally used conventionally.
- the steam supply device for supplying steam (process steam) used in factories or buildings, it is possible to reduce the equipment cost and the operation cost.
- FIG. 2 an application example of the embodiment shown in FIG. 1 is shown in FIG.
- the on-off valve 31 and the pressure reducing valve 32 are connected from the upstream side from a midway position of the steam line 21 connecting the steam outlet 19 a of the high-pressure steam generating boiler 19 and the steam inlet 20 a of the steam injector 20.
- a bypass line 30 provided in order is branched and provided. The downstream end of the bypass line 30 is connected to a midway position of the steam supply line 26 that connects the discharge port 20c of the steam injector 20 and the steam using device.
- shutoff valve 33 is provided on the downstream side of the branch portion of the bypass line 30 in the steam line 21.
- the shutoff valve 33 on the steam line 21 is opened in advance.
- the on-off valve 31 on the bypass line 30 is closed.
- the solar heat collector 22 is irradiated with sunlight 24. Thereby, the water stored in the solar heat collector 22 absorbs the energy of the sunlight 24 to be irradiated so that the temperature is raised.
- the steam injector 20 is driven by the steam 27 generated by the high-pressure steam generating boiler 19 as in the steam supply device of the embodiment of FIG.
- the water heated by the sunlight 24 boils and evaporates inside the solar heat collector 22 that is depressurized as the pressure drops.
- the steam 28 generated at this time is continuously sucked into the suction port 20 b of the steam injector 20.
- the sucked steam 28 is mixed with the high-pressure and high-temperature steam 27 from the high-pressure steam generating boiler 19 in the steam injector 20.
- the medium pressure and medium temperature steam 27 a increased by mixing the steam 28 with the steam 27 is discharged from the discharge port 20 c of the steam injector 20 and supplied to the steam using device 25 through the steam supply line 26.
- the amount of the steam 27 generated by the high-pressure steam generating boiler 19 can be made smaller than the amount of steam required by the steam using device 25. For this reason, similarly to the embodiment shown in FIG. 1, the fuel consumption of the high-pressure steam generating boiler 19 can be reduced, and the operating cost can be reduced.
- the solar heat collector 22 is not irradiated with the sunlight 24 due to the influence of the weather or the like, or the irradiation amount of the sunlight 24 is small, and the solar heat collector 22 sufficiently raises the temperature of the water. If not, the shutoff valve 33 on the steam line 21 is closed and the on-off valve 31 on the bypass line 30 is opened. In this state, the high-pressure steam generating boiler 19 is operated so that the entire amount of steam required by the steam using device 25 can be supplied by the steam 27 generated by the high-pressure steam generating boiler 19. As a result, the steam 27 generated in the high-pressure steam generating boiler 19 is, as shown by a two-dot chain line in FIG. It is supplied to the steam using device 25 through the steam supply line 26.
- the pressure reducing valve 32 provided on the bypass line 30 is appropriately adjusted according to the pressure and temperature conditions of the steam required by the steam using device 25 in advance, so that the steam using device 25 is controlled by the pressure reducing valve 32.
- the steam 27 that has been reliably adjusted to a pressure and temperature that match the steam pressure and temperature conditions required by the above can be supplied to the steam-using device 25.
- FIG. 3 Another application example of the embodiment of FIG. 1 is shown in FIG. 3 as still another embodiment of the present invention.
- the steam supply device shown in FIG. 3 is obtained by replacing the solar heat collector 22 provided in the steam supply device shown in FIG. 1 with a solar heat collector 34.
- the solar heat collector 22 shown in FIG. 1 is connected to the suction port 20 b of the steam injector 20 via the suction line 23.
- the inside of the container installed so as to be exposed to the sunlight 24 can be depressurized along with the suction by the steam injector 20.
- FIG. 3 is a closed loop that can circulate the heat medium 35 that rises in temperature by absorbing solar heat and raise the temperature of the water 37 stored in the evaporator 36.
- An evaporator 36 included in the solar heat collector 34 is connected to the suction port 20 b of the steam injector 20 via the suction line 23.
- the solar heat collector 34 is provided with a heat exchanging unit 38 inside an evaporator 36 which is a hollow container that can store water 37 and has a strength that does not deform even when decompressed by suction by the steam injector 20.
- a solar heat receiving container 39 is installed outside the evaporator 36 so as to be exposed to the sunlight 24.
- the solar heat receiving container 39 and the upper end portion of the heat exchanging portion 38 inside the evaporator 36 are connected by a heat medium line 40.
- the solar heat receiving container 39 and the lower end of the heat exchanging section 38 are connected by a heat medium line 41 including a circulation pump 42.
- a heat medium 35 is filled in a closed loop formed by the solar heat receiving container 39, the heat exchanging section 38 and the heat medium lines 40 and 41.
- the solar heat collector 34 operates the circulation pump 42 to circulate the heat medium 35 through the solar heat receiving container 39, the heat medium line 40, the heat exchange unit 38, and the heat medium line 41 in order. Can do.
- the heat medium 35 flowing through the inside of the solar heat receiving container 39 can be raised in temperature by absorbing the energy held by the sunlight 24.
- the heat medium 35 that has been heated by absorbing the energy held by the solar light 24 in the solar heat receiving container 39 sequentially flows through the heat exchanging unit 38 installed therein. Therefore, the temperature of the water 37 stored in the evaporator 36 can be raised by heat exchange with the heated heating medium 35 that flows through the heat exchange section 38.
- the solar heat receiving container 39 has an area for receiving the sunlight 24 as large as possible in order to efficiently raise the temperature of the heat medium filled therein with the energy held by the sunlight 24.
- the heat medium 35 is not limited to water, and one having a low pressure loss, one having a high boiling point, or the like is appropriately selected and used.
- the solar heat receiving container 39 of the solar heat collector 34 is irradiated with sunlight 24.
- the circulation pump 42 is operated so that the water 37 stored in the evaporator 36 of the solar heat collector 34 is heated using the energy held by the irradiated sunlight 24 as a heat source. .
- the steam injector 20 is driven by the steam 27 generated by the high pressure steam generating boiler 19.
- the inside of the evaporator 36 of the solar heat collector 34 is depressurized as the pressure at the suction port 20b decreases.
- the inside of the evaporator 36 of the solar heat collector 34 is depressurized, the water 37 whose temperature has been raised using the energy held by the solar heat 24 as a heat source boils and evaporates even if it is less than 100 ° C.
- the low-pressure, low-temperature steam 28 generated at this time is continuously sucked into the suction port 20 b of the steam injector 20.
- the low pressure and low temperature steam 28 sucked from the evaporator 36 of the solar heat collector 34 is mixed with the high pressure and high temperature steam 27 from the high pressure steam generation boiler 19 from the discharge port 20c of the steam injector 20.
- the steam 27a having a medium pressure and a medium temperature increased in step S is discharged.
- the steam 27 a discharged from the discharge port 20 c of the steam injector 20 is supplied to the steam using device 25 through the steam supply line 26.
- the amount of steam 27 generated by the high-pressure steam generating boiler 19 can be made smaller than the amount of steam required by the steam using device 25. For this reason, similarly to the embodiment shown in FIG. 1, the fuel consumption of the high-pressure steam generating boiler 19 can be reduced, and the operating cost can be reduced.
- the solar heat receiving container 39 of the solar heat collector 34 when the solar heat receiving container 39 of the solar heat collector 34 is not irradiated with the sunlight 24 due to the influence of the weather or the like, or when the irradiation amount of the sunlight 24 is small, the solar heat receiving container 39 may The temperature is not raised sufficiently. For this reason, the temperature of the water 37 inside the evaporator 36 is not sufficiently raised.
- the steam injector is not expected.
- a shutoff valve provided on the suction line 23 as in the embodiment of FIG. It is only necessary to operate the high pressure steam generating boiler 19 in a state where 29 is closed so that the steam 27 generated by the high pressure steam generating boiler 19 can supply the entire amount of steam required by the steam using device 25.
- the steam 27 generated in the high-pressure steam generating boiler 19 is depressurized and reduced in temperature according to the pressure loss when passing through the steam injector 20, and the steam using device 25 has a steam amount that matches the required amount. Can be supplied.
- the solar heat collection function and the evaporation function in the solar heat collector 34 can be individually assigned to the solar heat receiving container 39 and the evaporator 36. For this reason, the solar heat receiving container 39 and the evaporator 36 can each be optimally designed for the solar heat collecting function and the evaporation function.
- the solar heat collector 34 by making the solar heat collector 34 a closed loop type, water is not directly evaporated in the solar heat receiving container 39. For this reason, it is possible to prevent the possibility of the scale from being generated inside the solar heat receiving container 39, and to limit the place where the scale is concerned to the evaporator 36. Therefore, by designing the evaporator 36 so that it is easy to perform maintenance to cope with the generation of scale in advance, it is possible to expect an effect of reducing labor required for maintenance when the scale is generated.
- the present invention is not limited to the above-described embodiment.
- the closed-loop solar collector 34 shown in FIG. 3 is used instead of the solar collector 22. It may be.
- a geothermal heat collector that can collect the geothermal heat and raise the temperature of the stored water is connected to the inlet 20b of the steam injector 20 instead of the solar heat collectors 22 and 34. May be.
- the steam injector 20 is driven by the high-pressure and high-temperature steam 27 generated by the high-pressure steam generating boiler 19
- the inside of the geothermal collector that is depressurized as the pressure of the suction port 20b is reduced is normal temperature. But water will boil and evaporate.
- the steam generated by boiling and evaporating water in this geothermal heat collector was introduced into the steam injector 20 and mixed with the high-pressure and high-temperature steam 27 generated by the high-pressure steam generating boiler 19 to increase the amount. It becomes possible to generate steam at medium pressure and medium temperature.
- the function can reduce the pressure of the suction port 20b to a low pressure at which water boils and evaporates even at room temperature.
- the steam injector 20 having the above the heat of the stored water can be exchanged with the heat of the surrounding environment such as the surrounding air in place of the solar heat collectors 22 and 34 at the inlet 20b of the steam injector 20 A type of collector may be connected.
- the effect of being able to generate steam having a medium pressure and medium temperature and supply the steam to the steam using device 25 can be expected. Furthermore, the structure of the said heat collector can be made simpler, and can be installed irrespective of the presence or absence of sunlight irradiation. For this reason, the effect of further reducing the equipment cost can be expected.
- the steam generator can generate high-pressure steam capable of driving the steam injector 20 in an amount corresponding to the amount of steam required by the steam-using device 25, electric power such as a heater or a heat pump is used.
- electric power such as a heater or a heat pump is used.
- FIG. 4 shows the result of actual operation of the steam supply apparatus of the embodiment shown in FIG.
- a boiler that generates steam by burning fossil fuel is used as the high-pressure steam generating boiler 19.
- This boiler has the performance of generating steam at 180 ° C. and 850 kPa.
- the solar heat collector 22 a solar heat collector using a solar heat collecting panel is used.
- the solar heat 24 is collected by the solar heat collecting panel to raise the temperature of the internal water. Therefore, in the steam supply apparatus used in the example, the temperature of the internal water can be detected by measuring the temperature of the solar heat collecting panel.
- the horizontal axis represents elapsed time.
- the elapsed time is displayed in seconds, and the operation result shown in FIG. 4 represents the result until 3 hours have elapsed from the start of operation.
- the left vertical axis represents the temperature of the solar heat collecting panel used in the solar heat collector.
- the right vertical axis represents the driving pressure and the amount of solar radiation of the steam injector.
- the unit of the steam injector driving pressure is kPaG.
- the unit of solar radiation is W / m 2 .
- the steam injector driving pressure means a pressure as an output of the boiler.
- the panel temperature was about 100 ° C. at the position where the elapsed time shown on the horizontal axis was 3600 (sec), that is, before the operation was started.
- the steam injector driving pressure was almost zero.
- the steam injector driving pressure increased rapidly to about 600 kPaG.
- the increase in the driving pressure of the steam injector became gradual and became stable at a pressure of 850 kPaG when about 2400 (sec) elapsed from the start of the boiler.
- the panel outlet temperature once decreased to around 75 ° C. when the boiler was started. However, it rose gradually thereafter, and increased to 110 ° C. when the elapsed time was 7200 (sec).
- the steam injector was driven when the elapsed time was 7200 (sec).
- the driving of the steam injector means that the shut-off valve 29 is opened and the inside of the solar heat collector 22 is decompressed.
- the boiling point of the water stored in the solar heat collector 22 decreases and the temperature of the water decreases as the solar heat collector 22 is depressurized.
- the boiling point of water was lowered by driving the steam injector, and the temperature of water detectable from the panel temperature was lowered to about 80 ° C.
- the water temperature stabilized after dropping to about 80 ° C., and continued to show a substantially constant temperature for about 2 hours when the steam injector was driven in this example.
- the steam injector driving pressure continued to show a pressure of about 850 kPaG almost constant for 2 hours from the start of driving of the steam injector to the stop of operation of the steam supply device.
- the steam supply device according to the present invention showed a substantially constant temperature for both the steam injector driving pressure and the panel temperature (water temperature) while driving the steam injector. Thereby, it was demonstrated that the steam supply apparatus according to the present invention exhibits very stable output characteristics.
- FIG. 5 shows the result of performance simulation of the steam supply apparatus based on the steam supply apparatus used in the embodiment shown in FIG.
- the simulation was performed by predicting the performance of the steam supply device when the area of the solar heat collecting panel provided in the solar heat collector was changed while keeping the size of the high pressure steam generating boiler constant.
- the performance of the steam supply system was evaluated in three ways: panel efficiency, solar share, and panel temperature.
- the panel efficiency means the ratio of the energy of the solar heat 24 irradiated to the solar heat collector 22 that can be effectively used after being converted to the energy of the steam 28.
- the solar share means the ratio of the steam 28 generated by the solar heat collector 22 to the steam 27a discharged from the steam injector.
- the panel temperature means the temperature of the solar heat collecting panel provided in the solar heat collector 22.
- the vertical axis on the left represents panel efficiency and solar share.
- the vertical axis on the right represents the panel temperature.
- the horizontal axis in FIG. 5 represents the panel area.
- the square symbol represents the panel temperature.
- the triangular symbol represents the panel efficiency.
- the diamond symbol represents the solar share.
- the black symbols represent experimental data that are the results of actual operation, and the white symbols represent the simulation results.
- the panel efficiency is high and the solar share is low. For example, under the condition of 20 m 2 which is the minimum panel area assumed in the simulation range, the panel efficiency is about 46%, while the solar share is about 10%. However, as the panel area increases, the panel efficiency decreases and the solar share increases. For example, under the condition of 180 m 2 which is the maximum panel area in the simulation range, the panel efficiency is reduced to about 20%. However, the solar share will increase to about 30%. This is because, under the conditions where the boiler size is constant and the same steam injector is used, the amount of pressure reduction due to the driving of the steam injector is constant. This is because it becomes smaller. However, as the panel area increases, the amount of water stored inside increases, and the amount of steam 28 drawn into the steam injector increases. For this reason, the solar share increases as the panel area increases. The panel temperature increases as the panel area increases.
- the solar share shows a value close to the simulation result.
- the panel temperature experimental data shows a higher value than the simulation result
- the panel efficiency experimental data shows a lower value than the simulation result. This is because the amount of water stored in the solar heat collector is insufficient relative to the amount of steam 28 that can be generated in the solar heat collector by driving the steam injector, and dryout occurs in the solar heat collector. This is thought to have occurred.
- both the panel temperature and panel efficiency are considered to be close to the simulation results.
- the steam supply device by changing the panel area of the solar heat collector 22, the steam conditions required for the steam using device 25 or the fuel consumption required for the boiler. It can be seen that the operating conditions can be appropriately set according to the rate and the operating cost.
- the steam supply device can make the amount of steam generated by the steam generator smaller than the amount of steam required by the steam-using device. Further, when the amount of steam generated in the heat collector decreases due to the influence of the weather or the like, it is possible to easily supply the required total amount of steam by increasing the amount of steam generated by the steam generator. As a result, even in factories and buildings that do not generate exhaust heat that can be used for steam generation, steam with a pressure and temperature that meets the prescribed pressure and temperature conditions required for the equipment that uses the steam (process Steam) can be supplied in a required amount without being affected by natural conditions such as the weather. For this reason, it is possible to reduce the equipment cost and the operation cost.
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Abstract
Description
本願は、2009年7月10日に、日本に出願された特願2009-163385号に基づき優先権を主張し、その内容をここに援用する。
パネル効率とは、太陽熱集熱器22に照射される太陽熱24のエネルギのうち、蒸気28のエネルギに変換され有効に利用できる割合を意味する。
ソーラシェアとは、蒸気インジェクタから吐出される蒸気27aに占める、太陽熱集熱器22で生成された蒸気28の割合を意味する。
パネル温度とは、太陽熱集熱器22に備えられる太陽光集熱パネルの温度を意味する。
パネル温度は、パネル面積が増加するに従って増加する。
19a 蒸気出口
20 蒸気インジェクタ
20a 蒸気入口
20b 吸入口
20c 吐出口
22 太陽熱集熱器(集熱器)
25 蒸気使用機器
27,27a 蒸気
28 蒸気
34 太陽熱集熱器
35 熱媒
36 蒸発器
37 水
Claims (7)
- 蒸気発生装置と、
前記蒸気発生装置の蒸気出口に、蒸気入口が接続される蒸気インジェクタと、
前記蒸気インジェクタの吸入口に接続され、内部に水を貯留し、自然エネルギーによって前記水を昇温させる集熱器と、
前記蒸気インジェクタの吐出口に接続される蒸気使用機器と、
を備え、
前記蒸気インジェクタは、前記蒸気発生装置で発生させる蒸気で駆動され、
前記蒸気インジェクタの駆動により、前記集熱器内が減圧されて前記集熱器内で蒸気が生成され、
前記蒸気発生装置より供給される蒸気と、前記集熱器内で生成された蒸気とを、前記蒸気インジェクタで混合して前記蒸気使用機器へ供給する
蒸気供給装置。 - 前記蒸気発生装置は、前記蒸気使用機器で要求される全蒸気量を供給可能な能力を備える請求項1記載の蒸気供給装置。
- 前記蒸気発生装置は、高圧蒸気発生ボイラである請求項1又は2記載の蒸気供給装置。
- 前記集熱器は、太陽熱集熱器である請求項1又は2記載の蒸気供給装置。
- 前記集熱器は、太陽熱集熱器である請求項3記載の蒸気供給装置。
- 前記太陽熱集熱器は、太陽熱の吸収により昇温する熱媒を循環させる閉ループ形式の太陽熱集熱器であって、前記熱媒を循環させて内部に貯留した水を昇温させる請求項4記載の蒸気供給装置。
- 前記太陽熱集熱器は、太陽熱の吸収により昇温する熱媒を循環する閉ループ形式の太陽熱集熱器であって、前記熱媒を循環させて内部に貯留した水を昇温させる請求項5記載の蒸気供給装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2010269395A AU2010269395A1 (en) | 2009-07-10 | 2010-07-08 | Vapor supply device |
EP10797177.2A EP2453171A4 (en) | 2009-07-10 | 2010-07-08 | DEVICE FOR SUPPLYING STEAM |
JP2011521959A JPWO2011004866A1 (ja) | 2009-07-10 | 2010-07-08 | 蒸気供給装置 |
CN2010800302637A CN102472483A (zh) | 2009-07-10 | 2010-07-08 | 蒸汽供给装置 |
US13/380,315 US20120097151A1 (en) | 2009-07-10 | 2010-12-21 | Steam supply apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009-163385 | 2009-07-10 | ||
JP2009163385 | 2009-07-10 |
Publications (1)
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WO2011004866A1 true WO2011004866A1 (ja) | 2011-01-13 |
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ID=43429291
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PCT/JP2010/061628 WO2011004866A1 (ja) | 2009-07-10 | 2010-07-08 | 蒸気供給装置 |
Country Status (7)
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US (1) | US20120097151A1 (ja) |
EP (1) | EP2453171A4 (ja) |
JP (1) | JPWO2011004866A1 (ja) |
CN (1) | CN102472483A (ja) |
AU (1) | AU2010269395A1 (ja) |
TW (1) | TW201104174A (ja) |
WO (1) | WO2011004866A1 (ja) |
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JP2018109474A (ja) * | 2017-01-05 | 2018-07-12 | 株式会社テイエルブイ | ドレン回収システム |
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KR20100121690A (ko) | 2008-03-05 | 2010-11-18 | 이베이 인크. | 이미지 인식 서비스 방법, 시스템 및 컴퓨터 판독가능한 매체 |
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CN115183211A (zh) * | 2022-08-25 | 2022-10-14 | 云南电网有限责任公司电力科学研究院 | 蒸汽供应*** |
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Also Published As
Publication number | Publication date |
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EP2453171A4 (en) | 2014-05-14 |
US20120097151A1 (en) | 2012-04-26 |
JPWO2011004866A1 (ja) | 2012-12-20 |
TW201104174A (en) | 2011-02-01 |
EP2453171A1 (en) | 2012-05-16 |
CN102472483A (zh) | 2012-05-23 |
AU2010269395A1 (en) | 2012-02-02 |
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