JP2014202199A - Utilization method for hot exhaust water and high temperature waste heat of thermal power plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a theme for manufacturing metallic sodium applied for alternative energy in place of fossil fuel under utilization of waste heat occupying approximately 50% of a thermal power plant while keeping a cooling effect irrespective of uneconomical state not utilizing abundant heat stored medium as well as tremendous amount of influence of this large amount of hot water discharged into the sea after sea water of 40 tons per 1 second is increased by 7°C and discharged into the sea so as to get an electrical power of 100 MW at a thermal power plant.SOLUTION: Tubules in a condenser through which cooling sea water circulates are divided into an upper circuit and a lower circuit, a speed of brine flowing in the upper circuit is delayed to increase heat storage amount for sea water and make high temperature sea water, then distilled water and concentrated seawater are efficiently recovered. The concentrated seawater is used for manufacturing metallic sodium under application of waste heat of a power plant, surplus electrical power and midnight power and so energy resources can be recovered.

Description

The present invention relates to a method for recovering energy resources using waste thermal seawater and high temperature waste heat from thermal power plants.

Our nuclear power plants and thermal power plants are installed on the coast. The reason is that seawater is used as cooling water. The amount is “extremely large” and according to the statistics of 2008, the thermal power generation amount excluding nuclear power generation amounted to 179 million kW, or 179 generators with 1 million kW. This thermal power plant requires 40 tons of seawater as cooling water per second, so about 7,200 tons / second is used, and about 600 million tons are discarded in the sea every day. Since the Tokyo Dome has a capacity of 1.2 million tons, it means that about 500 cups of Tokyo Dome in Japan will be thrown away into the sea without being used in one day. Seawater pumped up as cooling water at these thermal power plants rises by about 7 ° C and then returns to the sea. Of course, effective use of the energy stored in the wastewater is necessary, but the return of a huge amount of high-temperature water to the sea without a break is crucial for the marine ecosystem and global warming. I think it has an impact.

As an attempt to directly use the heat of the hot effluent of a nuclear power plant, Kaneko et al. Of Hitachi Engineering Service Co., Ltd. disclosed in Japanese Patent Application Laid-Open No. 2003-328309 the hot effluent from a power generation facility. In addition, it discloses that snow is removed by pumping to a snow melting pipe laid in a power plant facility with a seawater pump. Koyama et al. Of Kashima Construction Co., Ltd. in Patent Document 2 “Soil Heating Greening Method” (Patent Publication No. 10-295-197) describes the lower layer in a planting area surrounded by a non-permeable heat insulating foam material. It is disclosed that greening of winter parks, green belts, flower beds, rooftops, watersides, etc. is performed by circulating waste hot water and heating the soil. Chino et al. Of Hitachi, Ltd. disclosed a method for producing pure water by depressurizing and condensing hot waste water from a condenser of a power plant in Patent Document 3 “Condenser” (Patent Publication No. 5-64703). ing. Ito et al. Of Toshiba Corporation, in Patent Document 4 “Aquaculture System” (Patent Publication 2003-284449), warms deep seawater separately pumped up with warm wastewater from the primary condenser, and produces marine marine products. Disclosure of aquaculture. Ito et al. Of Toshiba Corporation disclosed in Patent Document 5 “Wind Power Plant” (Patent Publication 2004-44508) that even when the external power source of the nuclear power plant is lost, the wind power generator functions as an emergency power source. ing. The inventor of the present application is a patent document 6 “on-site integrated factory” (WO 2008/142995) and non-patent document 1 “Reserve corn from ethanol generation” <marine resource recovery by wind power generation and offshore factory ”and non-patent In “Climate Change and sustainable Development (Chapter 19)” in Reference 2, the production process recovers metallic sodium as an alternative energy source of fossil fuel from seawater, and obtains fresh water, hydrochloric acid, sulfuric acid, and magnesium as by-products. Water is poured into the metal sodium of the product, and hydrogen combustion power generation is performed with the generated hydrogen. By-product caustic soda generated by this hydrolysis is used as a chemical industrial chemical, or this caustic soda is electrolyzed again with molten salt to produce sodium. Disclosed is a hydrogen / sodium fuel cycle that does not need to be refueled like a nuclear fuel cycle by regenerating. There.

"Snow melting equipment for power plants" (Patent Publication 2003-328309) "Soil warming greening method" (Patent Publication 10-295-197) "Condenser" (Patent Publication 5-64703) "Aquaculture system" (patent publication 2003-284449) “Wind Power Plant” (Patent Publication 2004-44508) “Onsite integrated factory” (WO 2008/142995)

Masataka Murahara / Kanwa City “Wind, save corn from ethanolization” published by Power Company (December 2007) Masataka Murahara “Climate Change and sustainable Development (Chapter 19)” Edited by Ruth A. Reck, Ph.D., Linton Atlantic Books, Ltd. (issued in March 2010) Masataka Murahara `` Fuelling the Future / New energy source manufactured from warm seawater discharge at nuclear power plant <sodium production for hydrogen power generation> '' Edited by A. Mendez-Vilas, Brown Walker Press Boca Raton, 429-433p (2012)

The reason for constructing the nuclear power plant on the coast is that it is easy to obtain reactor coolant. Generally, the amount of seawater required to obtain 1 million kW of electricity with one generator is 70 tons / second for nuclear power generation and 40 tons / second for thermal power generation. Therefore, about 6 million tons per day at the nuclear power plant is equivalent to 5 cups of Tokyo Dome, and 3.46 million tons of thermal power plant is equivalent to 3 cups of Tokyo Dome. Moreover, the temperature stored in the wastewater is over 7 ℃. The impact of this large amount of high temperature water on fish and shellfish and the weather is immeasurable, and it is uneconomical not to use abundant heat storage media. The present invention intends to solve the problem that since nuclear power plants are also thermal power plants, the amount of waste water from these thermal power plants is reduced, the temperature of the waste water is reduced, and the energy stored in the waste water seawater is used as alternative energy for fossil fuels. It is used for the production of metallic sodium.

The hot seawater discharged from one nuclear power plant is 6 million tons per day, and 7.6 million kilocalories of thermal energy is stored in the hot wastewater. This heat must be used. Furthermore, 6 million tons of seawater contains 5.4 million tons of fresh water, 65,000 tons of sodium, 17,000 tons of sulfuric acid, and 77,000 tons of magnesium. Furthermore, the heat storage energy for raising seawater by 7 ℃ is 42 billion kcal. According to Non-Patent Document 3, if each resource is simply calculated in consideration of the current market price, the heat storage energy of fresh water 540 million yen, sodium 97.5 billion yen, sulfuric acid 1.2 billion yen, magnesium 3.1 billion yen and seawater This means that about 100 billion yen per day is not used and is abandoned by the sea. If it is 50 nuclear power plants, it is 50 times that. The number of thermal power plants excluding nuclear power plants is 180 times. Therefore, it is calculated that 10 trillion yen a day is not used and discarded in the ocean at thermal power plants all over Japan. Therefore, it is the greatest problem of the present invention to produce metallic sodium by effectively using the energy of this warm waste water. Since metallic sodium is a solid that generates a large amount of hydrogen instantly when water is poured, it is named “source of hydrogen” in the present invention. The source of this hydrogen is produced from seawater discarded from nuclear power plants and thermal power generation, and this hydrogen source is used for hydrogen combustion power generation at a thermal power plant to minimize the amount of hot wastewater that is discarded into the sea and to use it as power energy. This is to produce the “source of hydrogen” at a low price.

The reason why nuclear power plants and thermal power plants are built on the coast is because of the cooling water. However, transmission lines are necessary to send power to the power consumption areas in urban areas. If the purpose of the nuclear power plant is limited to “manufacture of sodium”, there is no need for a transmission line to send the generated power to the power consumption areas in the Tokyo metropolitan area. Therefore, it may be an uninhabited island or a solitary island as long as cooling seawater can be obtained. Isolate the location of the nuclear power plant from the residential area, manufacture sodium from seawater, transport it to land-based power consumption areas, add water to sodium, generate hydrogen, and generate hydrogen power at thermal power plants in the power consumption areas If you do, you can create a clean living environment without carbon dioxide and radioactivity.

Discharging large amounts of hot wastewater into the ocean at thermal power plants and nuclear power plants has a significant impact on the biological environment and global warming. The temperature at the outlet of the wastewater used to cool the condenser of the nuclear power plant is 7 ℃ or higher. If possible, it is necessary to converge this temperature difference to “zero” to prevent biological environment and global warming.

When seawater is concentrated and sodium chloride is 30%, caustic soda can be produced by aqueous electrolysis. For this purpose, if the temperature of the hot waste water from the condenser is set to 100 ° C., distilled water can be recovered without reducing the pressure, and concentrated salt with a high concentration can be recovered. In general, when seawater is boiled, precipitation of calcium sulfate begins at 108 ° C, salt precipitates at 180 ° C, and magnesium chloride can be separated as a filtrate. Therefore, if the temperature of the hot waste water is 100 ° C., the water in the seawater can be recovered as distilled water, and the salt as concentrated salt can be recovered without using energy separately. Therefore, in order to share the role between the means for reducing water vapor into water in the condenser and the means for concentrating seawater as cooling water, a cooling capillary system for allowing seawater as cooling water to flow through the condenser, Depending on the cooling water discharge temperature, the temperature is divided into two parts, the lower narrow tube section where the low-temperature cooling water is discharged and the upper thin tube section where the high-temperature cooling water is discharged, above and below the central part of the condenser. Seawater is discharged as high-temperature seawater at 50 ° C to 100 ° C after exchanging heat in the condenser with water vapor after turbine rotation. Further, this high-temperature seawater is distilled under reduced pressure to obtain fresh water and concentrated brine (20-30%). This concentrated salt water is transferred to an electrolysis factory, and calcium ions, magnesium ions as impurities and sulfate ions are separated by an ion exchange membrane, and then the filtrate is electrolyzed with an aqueous solution to produce caustic soda. After dehydrating the caustic soda, molten salt electrolysis is performed to produce metallic sodium. On the other hand, on the turbine side of the condenser, the water vapor pressure is 70 atmospheres and the temperature is 280 ° C., but the water pressure leaving the condenser and returning to the reactor is extremely low, and the temperature is 50 ° C. or less. Therefore, the cooling seawater flowing through the lower narrow pipe portion serves only for cooling, and is discharged into the sea as hot wastewater after use in the condenser.

The invention according to claim 1 evaporates the water circulating in the combustion boiler of a thermal power plant such as coal-fired, oil-fired, LNG-fired, biomass-fired, or nuclear power to produce steam, and the turbine is generated by the power of the steam. In order to rotate, thermal power generation is a system in which water vapor is cooled by a condenser to generate a pressure difference, and the generator is driven by the rotation of the turbine by the pressure difference. The steam generated from the steam generator is introduced into a condenser that rotates the turbine for power generation and returns the steam to water, cooled in the condenser, converted into water, and then recovered. Exit the water bottle and return to the respective heat source. In general, when water becomes a gas at 100 ° C., the volume expands by about 1200 times, and further expands at higher temperatures. However, if the water vapor is cooled to 100 ° C. or lower, it changes to water and the volume returns to 1/1200 or lower. This pressure difference turns the turbine and the water vapor returns to the water before returning it to the boiler. The steam for rotating the turbine repeats the process of “liquid + heat → steam → converted into rotational motion of the turbine → steam + cooling → liquid”. This “+ heat” is a fuel rod or boiler. “+ Cooling” is the role of the condenser (secondary cooling water). Because seawater is used for this secondary cooling water, Japanese nuclear power plants and thermal power plants are adjacent to the coast. The amount of seawater as cooling water is 40 tons / second per 100kW of power generation. It is 3.45 million tons per day. This seawater contains 3.1 million tons of fresh water, 37,000 tons of sodium, 0.98 million tons of sulfuric acid, and 44,000 tons of magnesium. Furthermore, 24.1 billion kcal is stored as heat storage energy to raise seawater by 7 ℃. For the purpose of recovering these minerals, in the present invention, a cooling capillary system through which seawater flows as cooling water in this condenser is used, and low-temperature cooling water is provided above and below the central portion of the condenser according to the temperature of the cooling water. It is installed in a position divided into two parts, the lower narrow pipe part to be transferred and the upper thin pipe part to which the high-temperature cooling water is transferred, and the cooling seawater flowing through the lower thin pipe part serves only for cooling and is used in the condenser. After that, it is discharged into the sea as warm wastewater. On the other hand, the high-temperature seawater flowing through the upper thin tube portion is stored at 50 ° C. to 100 ° C., and then distilled under reduced pressure, preferably by distillation under reduced pressure in a multistage flash distillation can and recovered as distilled water. Simultaneously dehydrated warm seawater is recovered as 20-30% concentrated seawater, and this concentrated seawater is used for caustic soda production. In general, the power generation efficiency of thermal power plants is 40-50%, and more than 50% of thermal energy is discarded. Therefore, in the present invention, an ultra-high temperature gas (800 ° C. or higher) flowing in the front stage of the gas turbine of the thermal power plant, a high-temperature gas exhausted from the rear stage (800 to 600 ° C.), or an intermediate high-temperature gas exhausted from the rear stage of the steam turbine ( 600-300 ° C) with a pipe filled with a heat medium in the temperature atmosphere, melting the base metal salt via the heat medium in the pipe, suppressing the power supply for generating Joule heat as much as possible, The molten salt is formed by utilizing the waste heat. Since the main raw material in the present invention is marine salt, salt production is first carried out with waste heat of medium and high temperature gas (600 to 300 ° C) exhausted from the latter stage of the power generation steam turbine, and the midnight power and surplus of the power plant are stored. Sodium salt, sodium hydride, magnesium metal, etc. are manufactured by melting salt directly with the high-temperature gas (800 ° C or higher) flowing in the front stage of power and gas turbines or the high-temperature gas (800-600 ° C) exhausted from the rear stage. To do. In Japan, limestone boasting the only self-sufficiency rate of 100% is a good source of calcium and metal hydride. These calcium carbonates are contained as limestone and as waste materials in steel slag, shells and shellfish or hot spring water. In particular, the waste heat of steel slag can be used as the heat of fusion. In order to melt the waste heat of these steel slag and thermal power plant with a heat medium heater, the molten salt furnace and the waste heat source are connected by a pipe, the heat double is circulated in this pipe and the base metal is melted through the heat medium. It is a feature of the present invention to make salt and recover energy resources with less power.

In the invention described in claim 2, the ultra-high temperature gas described in claim 1 means 1700 ° C. or higher related to hydrogen-oxygen combustion. The thermal efficiency of thermal power plants is the highest in Japan, at 45%. In the case of nuclear power generation, it is as low as 30%. In woody biomass power generation, which generates electricity by burning wood chips, it is a lower 20%. On the other hand, efforts to improve power generation efficiency continued, and in 2007, approximately 59% was achieved with 1500 ° C-class LNG combined cycle power generation. In 2016, the combustion chamber temperature was set to 1600 ° C, with an aim of 61% efficiency. ing. However, carbon dioxide emissions cannot be avoided because the fuel is LNG. However, the combustion temperature of hydrogen is as high as 3,000 ° C, the combustion energy is 2g of hydrogen, 286 kJ (H ₂ + 1 / 2O ₂ = H ₂ O +286 kJ), the combustion energy of carbon (C), which is representative of fossil fuels Is 394 kJ at 12 g of carbon (C + O ₂ = CO ₂ +394 kJ), so hydrogen has 4.4 times the energy of carbon when compared with the same weight, and carbon dioxide (CO ₂ ) does not occur and the waste is only water (H ₂ O). This is the reason why it is in the limelight as clean energy friendly to the global environment. In Japan, NEDO (New Energy and Industrial Technology Development Organization) aims to efficiently use hydrogen and improve the efficiency of the gas turbine power generation system. Combustion of 1,700 ° C class gas turbines at the Mitsubishi Heavy Industries Rocket Engine Test Station in Tashiro-cho, Akita Prefecture Successfully tested. Since this hydrogen combustion turbine puts hydrogen gas and oxygen gas into the combustion system, the generated gas is only water vapor and no nitrogen oxides are generated. By raising the gas temperature at the gas turbine entrance to 1,700 ° C, power generation efficiency is no more than 70%. However, when the temperature exceeds 1700 ° C, the heat resistance of the gas turbine cannot keep up. Therefore, attempts are being made to keep the combustion temperature low by mixing hydrogen gas and LNG.
Therefore, in the present invention, a heat medium heater is provided as a heat buffer region between the hydrogen-oxygen combustion chamber and the gas turbine to relieve the hot air of the turbine to avoid thermal destruction, and more than 800 ° C. due to the endotherm. Base metal or hydrogenated base metal is produced by electrolysis in the state that salt is directly melted using high temperature.

In the invention described in claim 3, the base metal described in claim 1 is sodium, calcium, or magnesium because the main raw material in the present invention is marine salt. ℃) waste heat is generated and stored, and the midnight power and surplus power of the power plant and the super high temperature gas (1600 to 1200 ° C) flowing in the front stage of the gas turbine or the high temperature gas exhausted from the rear stage (1200 to 600 ° C) The sodium chloride is directly melted in to produce metallic sodium, sodium hydride, metallic magnesium, and the like. In Japan, limestone boasting the only self-sufficiency rate of 100% is a good source of calcium and metal hydride. These limestones contain about 56% calcium carbonate (CaCO ₃ ), and more than 95-98% are shells. This shell is pure calcium carbonate without any impurities such as iron and aluminum like limestone. For example, in the case of scallops, 210,000 tonnes of waste is produced annually in Japan, but it is promising for calcium hydride (CaH ₂ ) production.

According to a fourth aspect of the present invention, the hot gas according to the first aspect of the present invention is a high temperature in the range of 300 ° C. to 800 ° C. due to the endotherm of the heat medium provided in the rear stage of the turbine. More than ℃ is necessary, but for the purpose of lowering the melting temperature, if the mixed salt of sodium chloride (NaCl) is about 60% and calcium chloride (CaCl ₂ ) is about 40%, the melting point drops by 200 ° C and melts at 600 ° C In order to form a salt, waste heat in the range of 300 ° C. to 800 ° C. due to heat absorption of a heat medium provided in the subsequent stage of the turbine is used.

In the invention according to claim 5, the medium and high temperature gas according to claim 1 is exhausted from the rear stage of the steam turbine, and the medium and high temperature gas inside and outside of 300 ° C. is a relatively low temperature exhaust gas. This temperature is convenient for dehydration of compounds such as dehydration separation of salts, dehydration of caustic soda generated by electrolysis of salt water, and dehydration of dilute sulfuric acid.

In the invention described in claim 6, there are Hg, Na, Na-K, Li, Pb, Pb-Bi, etc. as the fusible metal as the heat medium for high temperature, but metals other than lead (Pb) are dangerous. It is. This lead is the cheapest and easy to handle among these fusible metals. However, since the temperature range in which lead is liquid is 350 to 900 (1,750) ° C., it does not work as a heat medium heater unless it is preliminarily heated and melted. Therefore, when using lead (Pb) as the heat medium according to claim 1, the heat medium heater pipe has a double or triple pipe structure, and Pb is allowed to flow through the inner pipe and HTS into the middle pipe at the start-up stage. (NaNO ₂ , NaNO ₃ , KNO ₃ etc. mixture: 200-500 ° C.) is allowed to flow and oil is circulated through the outer tube.

According to the seventh aspect of the present invention, since the Group 2 metal or the hydride of the Group 1 and Group 2 metal produced by the manufacturing method according to the first aspect has a high melting point, natural cooling is unavoidable. However, there is no waste of this waste heat. Therefore, the heat is absorbed by a heat medium heater, and salt water is dehydrated with this waste heat to produce salt.

The invention according to claim 8 is a proposal for making use of a dormant nuclear power plant in a region affected by a tsunami disaster such as Fukushima Prefecture and Miyagi Prefecture for regional reconstruction. The hot seawater discharged from one nuclear power plant is 6 million tons per day, and 7.6 million kilocalories of thermal energy is stored in the hot wastewater. This heat must be used. Furthermore, 6 million tons of seawater contains 5.4 million tons of fresh water, 65,000 tons of sodium, 17,000 tons of sulfuric acid, and 77,000 tons of magnesium. Furthermore, the heat storage energy for raising seawater by 7 ℃ is 42 billion kcal. According to Non-Patent Document 3, if each resource is simply calculated in consideration of the current market price, the heat storage energy of fresh water 540 million yen, sodium 97.5 billion yen, sulfuric acid 1.2 billion yen, magnesium 3.1 billion yen and seawater This means that about 100 billion yen per day is not used and is abandoned by the sea. This is 4 units (4.4 million kW) at the Fukushima No. 2 plant and 3 units (2.174 million kW) at the Onagawa plant. In particular, the Fukushima No. 2 nuclear power plant is also useful for supplying power for decommissioning work at the Fukushima Daiichi nuclear power plant. Therefore, taking into account the amount of power generation that can be used for reconstruction in the region, distilled water obtained by flash vacuum distillation of a portion of the hot wastewater that is discarded from the condenser is partitioned by a partition wall, and a wide range of salt damage can be achieved day and night. The soil is washed, and salt produced during the daytime is electrolyzed with molten salt using midnight power and the waste heat of the reactor to produce metallic sodium and sold for stockpiling or batteries.In the daytime, power is sent to the Tokyo metropolitan area. While distributing electricity, the waste heat of the reactor is used to produce salt as a raw material for metallic sodium produced by midnight power.

The invention according to claim 9 proposes to establish a biomass thermal power plant on an uninhabited island for processing timber from a tsunami disaster or a radioactively contaminated area or a felled tree chip. Unlike the nuclear power plant, the location of the biomass power plant may be a volcanic island. In general, power plants required a transmission line to transport the produced power to the consumption area. However, if the purpose of installing the power plant is limited to “sodium stock”, there is no need for a transmission line to transport power to the power consumption areas in the Tokyo metropolitan area. If it is an island, there is no shortage of raw seawater. The concern about radioactive contamination of wood chips is not a problem. Distilled water obtained from warm seawater discharged from the condenser of the power plant will contribute to international contribution if it is transported to neighboring countries as drinking water or industrial water by tankers. Sodium can be stored as power fuel. In general, the efficiency of biomass power generation is at most 20%, and 80% is discarded as waste heat in the atmosphere. Using this waste heat for metallic sodium, caustic soda or salt production to increase the efficiency to 90% is considered to be a migrant power plant in Fukushima.

As described above, according to the present invention, as a method of effectively using seawater pumped up for cooling by nuclear power generation or thermal power generation, heat energy stored in a huge amount of hot seawater returned to the sea is waste heat. Without using water, distilled water and concentrated seawater can be recovered using the heat, and the concentrated seawater can be electrolyzed using the power generated by power generation to produce metallic sodium that can serve as alternative energy for fossil fuels. it can. Then, metal sodium is stored, hydrogen combustion power generation is performed with hydrogen generated by hydrolysis at a thermal power plant, and caustic soda obtained as waste is supplied as chemicals for the chemical industry. In addition, by-products such as fresh water, hydrochloric acid, sulfuric acid, and magnesium obtained during the metal sodium manufacturing process are products that have been manufactured using high power. Since this can be obtained in the same way, the economic effect is great. In particular, metallic sodium obtained from seawater concentrate is considered to contribute to the construction of a world free of resource warfare as an alternative energy source for oil, as an energy resource without fear of depletion, and without local unevenness.

The system schematic for utilizing the waste warm seawater and waste heat of a thermal power plant.

Hereinafter, an effective embodiment of the present invention will be described in detail with reference to FIG.

FIG. 1 is a schematic diagram of a system for using waste thermal seawater and waste heat of a thermal power plant (an explanatory diagram of claim 1).
In the present invention, the gas turbine is rotated by hot air obtained by hydrogen combustion combined cycle power generation of thermal power generation, and the steam turbine is rotated by steam generated by the heat generated in the boiler to drive the generator to generate power. Is. First, a hydrogen combustion combined cycle power generation facility having a turbine with a heat-resistant temperature of 1,700 ° C. or more is supplied with hydrogen 25 generated by dripping fresh water 15 into the storage metal sodium 22 in the hydrogen generation facility 25 to the hydrogen combustion combined cycle power generation facility 23. It is fed and burned in the combustor 27 together with the oxygen 26. In the hydrogen generation facility 24, petroleum (light oil or kerosene) 30 also functions as a catalyst for controlling the hydrolysis of the metallic sodium 22. The combined cycle power generation is characterized in that the start-up time is shorter than that of a steam turbine of the same output and heat is recovered from the exhaust of the gas turbine, so that the thermal efficiency is high. The high-temperature gas of hydrogen 25 and oxygen 26 combusted in the combustor 27 rotates the gas turbine 28 to drive the generator 21 to perform gas turbine power generation, and after heating the boiler, the exhaust gas is compressed by the compressor 29. After that, it returns to the combustion chamber again. On the other hand, steam produced by the boiler 19 is used to rotate the steam turbine 20 and the generator 21 to perform steam turbine power generation. The steam that has driven the steam turbine 20 enters the condenser 2 from the steam inlet 1, exits the low temperature water outlet 3, returns to the respective heat source, and the primary cooling water 4 loop, and seawater pumped from the sea ( The secondary cooling water (5) is divided into two directions, an upper narrow tube (6) and a lower narrow tube (7), and the cold seawater (secondary cooling water) (5) flowing through the lower narrow tube (7) becomes warm drainage (8) and is discharged into the sea. On the other hand, seawater (secondary cooling water) 5 for recovering fresh water and concentrated seawater passes through the condensing coil 10 in the flash vacuum distillation can 9 before entering the upper capillary 6 and enters the upper capillary 6. It is heated by the next cooling water 4 and stored in the high temperature seawater 11 at 50 to 100 ° C. and enters the flash vacuum distillation can 9. This flash vacuum distillation can 9 is depressurized according to the saturated water vapor pressure corresponding to the temperature of the high temperature seawater 11, and is 100 mmHg at 50 ° C, 350 mmHg at 80 ° C, 510 mmHg at 90 ° C, and 760 mmHg (1 atm) at 100 ° C. The water vapor (water vapor from the concentrated salt water) 12 generated in the above is cooled by the coil 10, and the condensed water 13 condensed is condensed in the fresh water receiving tray 14 to obtain fresh water (distilled water) 15. On the other hand, high-temperature seawater (50 to 100 ° C.) 11 dehydrated by distillation under reduced pressure becomes high-concentration concentrated brine 16 of about 20 to 30%, and is sent to a sulfuric acid production factory (electrolysis factory) 17. This 20-30% concentrated brine produces dilute sulfuric acid 18 by separating sulfuric acid with de-Ca, de-Mg, ion exchange membrane.
Thermal power generation efficiency is at most 50%, and 40-50% of heat is wasted. Therefore, in the present invention, an ultra-high temperature gas (800 ° C. or higher) flowing in the front stage of the gas turbine of the thermal power plant, a high temperature gas (800 to 600 ° C.) exhausted from the rear stage, or an intermediate high temperature gas exhausted from the rear stage of the steam turbine ( 600-300 ° C) with a pipe filled with a heat medium in the temperature atmosphere, melting the base metal salt via the heat medium in the pipe, suppressing the power supply for generating Joule heat as much as possible, The molten salt is formed by utilizing the waste heat. Since the main raw material in the present invention is marine salt, the salt production plant first absorbs the heat of the waste heat of the medium to high temperature gas (600 to 300 ° C.) exhausted from the rear stage of the power generation steam turbine 20 by the medium and high temperature heat medium heater 35. 36, the concentrated marine salt 38 is dehydrated by the heat medium heater 37, and NaCl, CaCl ₂ and MgCl ₂ are separated and recovered. The salt produced at this salt factory is stored and supplied as a raw material for metallic sodium and caustic soda as needed. At the same time, the waste heat from the medium / high temperature heating medium heater 35 is obtained at the caustic soda manufacturing plant (electrolysis of salt water) 39 by electrolyzing 30% salt water prepared by adding water 15 to the salt produced at the salt manufacturing plant 36 at 80 ° C inside and outside. To produce caustic soda 32. Generally, power is surplus at midnight. Therefore, high-temperature molten salt electrolysis is performed via the heat medium (Pb) that absorbs heat in the ultra-high-temperature heat medium heater 33 in order to use ultra-high-temperature gas (800 ° C or higher) flowing in the front stage of the gas turbine using midnight power or surplus power. The salt produced in the salt production factory 36 is sent to the factory 40, and the molten salt electrolysis furnace 42 is heated by the super high temperature molten salt heating medium heater 33 to produce the metallic sodium 22. On the other hand, the waste heat of the high-temperature gas (800 to 600 ° C.) exhausted from the rear stage of the gas turbine 28 is absorbed by the high-temperature heat medium heater 34 and sent to the high-temperature molten salt electrolysis factory 41 to electrolyze the caustic soda 32. Sodium metal 22 is produced by electrolyzing a mixed salt of sodium chloride and calcium chloride with molten salt. In addition, metal hydride 43 is produced by combining hydrogen 25 with metal sodium 22 produced in this factory. Similarly, magnesium metal is produced. In addition, it produces metal calcium and calcium hydride from limestone that boasts the 100% self-sufficiency in Japan.

The reason why oil and coal have reigned as fuel is that they are light and can be stored for a long time and transported over long distances. However, both oil and coal are available for a limited number of years and emit carbon dioxide. In contrast, hydrogen is a clean and environmentally friendly fuel that has an indefinite life and does not emit carbon dioxide. However, although hydrogen itself is light, containers (cylinders) for storing hydrogen and storage alloys are too heavy to be suitable for transportation. Therefore, “hydrogen” was converted to “source of hydrogen (sodium)”. This sodium is widely distributed around the world as seawater and rock salt, and there is no worry about depletion or uneven distribution. On the other hand, in nuclear power generation and thermal power generation, a huge amount of seawater pumped for cooling is abandoned at high temperatures. Using this stored thermal energy, distilled water and concentrated seawater are recovered, and the concentrated seawater is electrolyzed to produce and store metallic sodium as an alternative energy for fossil fuels. Hydrogen-fired power generation using hydrogen generated in Caustic soda obtained as waste is supplied as chemical industry chemicals. In addition, by-products such as fresh water, hydrochloric acid, sulfuric acid, and magnesium obtained during the metal sodium manufacturing process are products that have been manufactured using high power. Since this is almost the same, it has a great economic effect. In particular, metallic sodium obtained from seawater can greatly contribute to Japan's industry as an alternative energy source for oil, as a resource for generating electricity without worrying about depletion and without local distribution.

1 Steam inlet 2 Condenser
3 Low temperature water outlet 4 Primary cooling water returning to the respective heat source 5 Seawater pumped from the sea (secondary cooling water)
6 Upper narrow tube 7 Lower thin tube 8 Warm drainage 9 Flash vacuum distillation can 10 Condensation coil 11 High temperature seawater (50-100 ° C)
12 Water vapor (water vapor from concentrated salt water)
13 Condensed and condensed distilled water 14 Fresh water tray 15 Fresh water 16 Concentrated salt water (20-30%)
17 Sulfuric acid production plant (electrolysis plant)
18 Dilute sulfuric acid 19 Boiler 20 Steam turbine 21 Generator 22 Metal sodium (Na)
23 Hydrogen Combustion Combined Cycle Power Generation Facility 24 Hydrogen Generation Facility 25 Hydrogen 26 Oxygen 27 Combustor 28 Gas Turbine 29 Compressor 30 Light Oil 31 Caustic Soda 32 Caustic Soda Storage 33 Super High Temperature Heat Medium Heater 34 High Temperature Heat Medium Heater 35 Medium High Temperature Heat Medium Heater 36 Salt Factory 37 Heat medium heater for salt production 38 Concentrated marine salt 39 Caustic soda production plant (electrolysis of saline solution)
40 Ultra High Temperature Molten Salt Electrolysis Plant 41 High Temperature Molten Salt Electrolysis Plant (NaOH or calcium chloride mixed salt)
42 Molten salt electrolysis furnace 43 Metal hydride 44 Hydrochloric acid 36 Salt production plant 37 Salt-making heat doubler heater 38 Concentrated marine salt 39 Caustic soda production plant (electrolysis of salt water)
40 High-temperature molten salt electrolysis plant 41 Medium-temperature molten salt electrolysis plant (NaOH or calcium chloride mixed salt)
42 Electrolysis furnace 43 Metal hydride 44 Hydrochloric acid

Claims (9)

Periodic table 1 genus in which warm seawater discarded from the surface condenser of a thermal power plant or slaked lime or shells in steel slag is dissolved in the warm seawater using the waste heat or residual heat of the turbine drive of the thermal power plant When electrolytically generating metal or metal hydride consisting of group 2 elements, heat medium in the circulating pipe is used for the high temperature gas flowing in the front stage of the gas turbine of the thermal power plant, the high temperature gas exhausted from the rear stage, or the high temperature steel slag. The molten salt electrolysis furnace is heated through the medium, and the high-temperature gas exhausted from the rear stage of the steam turbine of the or / and thermal power plant is dehydrated and separated from the marine salt through the heat medium in the circulation pipe. Energy resource recovery method from waste warm seawater and industrial waste. The ultra-high temperature gas according to claim 1 means 1700 ° C. or higher involved in hydrogen-oxygen combustion, absorbs heat to a heat medium provided in the previous stage of the turbine, relaxes hot air of the turbine, avoids thermal destruction, and A base metal or a hydrogenated base metal is produced by electrolysis in a state in which salt is melted directly using a high temperature of 800 ° C or higher due to its endotherm, from waste warm seawater or industrial waste according to claim 1 Energy resource recovery method. 3. The method for recovering energy resources from waste warm seawater or industrial waste according to claim 1 or 2, wherein the base metal according to claim 1 is sodium, calcium or magnesium. The high-temperature gas according to claim 1 is a high temperature in a range of 300 ° C. to 800 ° C. due to heat absorption of a heat medium provided in the latter stage of the turbine, and directly melts salt and calcium chloride mixed salt or caustic soda or slaked lime or shells. 4. Energy from waste warm seawater and industrial waste according to claim 1, 2 and 3, characterized by producing metal sodium, sodium hydride, metal calcium or calcium hydride by electrolysis in a state Resource recovery method. The medium and high temperature gas according to claim 1 is composed of a medium and high temperature gas exhausted from the latter stage of the steam turbine, and dehydrated separation of marine salt and electrolysis of concentrated salt water through a heat medium (oil) in the circulation pipe. The method for recovering energy resources from waste warm seawater or industrial waste according to claim 1, wherein the production of caustic soda by water, dehydration of salt caustic soda from marine water, dehydration of dilute sulfuric acid, and the like are performed. When using lead (Pb) as the heating medium according to claim 1, since the temperature range in which lead is liquid is 350 to 900 (1,750) ° C., the pipe of the heating medium heater has a double or triple pipe structure, In the starting stage, Pb is allowed to flow through the inner pipe, HTS (a mixture of NaNO ₂ , NaNO ₃ , KNO ₃ etc .: 200 to 500 ° C.) is allowed to flow through the inner pipe, and oil is circulated through the outer pipe. A method for recovering energy resources from waste warm seawater or industrial waste according to 1. 2. The method according to claim 1, wherein when cooling the metal or metal hydride generated by the production method according to claim 1, salt heat is produced by transferring waste heat for cooling to the salt water through a heat medium pipe. Energy resource recovery method from waste warm seawater and industrial waste. In order to make the nuclear power plant in the area affected by the tsunami useful for regional recovery, washing of salt-damaged soil was performed extensively with distilled water obtained from the warm seawater discharged from the condenser, daytime and nighttime production. The molten salt is electrolyzed with midnight power and the waste heat of the reactor to produce metallic sodium.In the daytime, power is sent to the Tokyo metropolitan area, while the waste heat from the reactor is used to produce salt. The method for recovering energy resources from waste warm seawater or industrial waste according to claim 1. Distilled water obtained from tsunami disasters and radioactively contaminated areas and wood chips that have been cut down to a biomass-fired power plant installed on an uninhabited island and obtained from warm seawater discharged from the condenser of the power plant It is a migrant power plant that is exported as drinking water or industrial water, and uses the obtained electric power and waste heat for producing salt and metal sodium for storage. Energy resource recovery methods.