JPH01222729A - High-production marine ranch creation system - Google Patents

Abstract

PURPOSE:To construct an artificial marine ranch by warming the seawater fed through a wave pump delivery pipe in a sunlight pumped storage pond and feeding the resultant warmed seawater into a temperature-difference power generation unit having a cold water wave pump for feeding low-temperature deep stratum seawater. CONSTITUTION:When a float piston 4 is raised, a delivery valve 10 in a pressurized feed cylinder 9 becomes 'on'; thereby sucked seawater is extruded into a delivery pipe 11 and enters a sunlight pumped storage pond 12. Low- temperature deep stratum seawater 15 abundant in nutritious matter at a depth of 100-300m is pumped with a cold water pump 16 or cold water wave pump 16a, chilling a condenser 17 fitted at the outlet of the pump system 16 leading to chilling a low-boiling working fluid within a circulating line 18. The liquefied liquid in the condenser 17 is heated and vaporized in an evaporator 20, by the high-temperature water fed from the sunlight pumped storage pond 12. The resultant vaporized fluid then revolves a turbine 21.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention utilizes the upwelling of low-temperature deep water with high nutrient sources and the fact that fish gather in slightly different sea areas. Create a highly productive marine farm near the sea surface by pumping water, generate electricity by the temperature difference with high temperature surface water, and recover uranium, lithium, etc. by using high and low temperature water flow. Concerning a total system for creating high-productivity sea areas.

[Conventional technology 1] Since there is no prior art related to a total system that combines a temperature difference power generation device, a seawater desalination device, a wave pump, and a solar pumping pond to create a high-productivity sea area, we will not discuss the individual technologies that make up the total system. I will briefly explain.

(1) Pumped storage power generation system Fig. 3 connects an electric pump O1, a pumped storage pond 03, and a water turbine generator 04 with a water conduit 02.05, and pumps water by operating the electric pump 01 during periods when IK power is less used. This shows a drought power generation system in which water is pumped up into a pond 03 and then guided to a water turbine generator 04 during peak demand periods to generate electricity. Although this is a method for extracting water at any time, it requires energy equal to or greater than the energy generated by the water turbine power generation Wa4 to pump water, and it cannot provide any energy gain.

(2) Temperature difference power generation device As shown in Figure 4, low boiling point working fluid closed cycle circuit 0
11 is provided with a turbine generator O12, an evaporator 013, a circulating pump 014, and a condenser 015, and low-temperature deep water 020 is guided to the condenser 015 via a conduit 016 and a cold water pump 018 to cool the working fluid after the turbine. Further, the high temperature surface water 021 is supplied to the steamer Q) 3013 through the conduit 017i3 and the hot water pump 019, and the working fluid is heated and evaporated. Made of evaporated high temperature! The j3 fluid rotates the turbine generator 012 to obtain output.

In such a temperature difference power generation device, the internal power of the pumps is large, and the unit cost of power generation is therefore high.
It can be as low as 0 yen/kWh.

(3) Uranium/lithium recovery device A uranium/lithium recovery cylinder is used to recover uranium, etc. from seawater. The uranium content in seawater is 3 ppb.
(3 μg/2) and even if the 1 recovery efficiency is 100%,
To obtain 1 kg of uranium, it is necessary to circulate 300,000 tons of seawater. If we evaluate the economic efficiency by taking into account the cost of equipment and the power cost of the recirculation pump, the current price of uranium is extremely low, so it will not be based on the market.

(4) Ocean current lift devices Concrete blocks or fabric updraft devices with floats are sometimes laid on the seabed, but these devices do not allow natural ocean currents to flow.
1, and it is not possible to obtain a large amount of ascending flow.

(5) Seawater desalination equipment Seawater desalination equipment (Figure 2) is similar to a temperature difference power generation device, and utilizes the temperature difference between high-temperature sea surface water and low-temperature deep water to perform depressurization, evaporation, and condensation. At least it is a device to collect fresh water, increase temperature difference, and in-house power.

The decrease in the number of

[Problem to be solved by the invention 'E1] In conventional systems such as those described above, individual devices are often installed for a single purpose, such as wave pumps, turbine power generation, marine aquaculture, and seawater desalination. Naturally, it is economically disadvantageous to use natural energy in a single form, and it is rarely put to practical use except for ocean ranching and drought power generation.

The above-mentioned temperature difference power generation device has a low power generation efficiency due to the small temperature difference between the high temperature surface water and the low temperature deep water. Even if a good product is developed, uranium 1
Since a large amount of seawater (300,000 tons or more per kg) will still be circulated, it is necessary to reduce costs by thinking from a total system perspective.

An object of the present invention is to provide a rational combination system as a means for solving the above problems.

[! [Means for Solving Fill] The present invention includes: (1) A wave pump that reciprocates inside a cylinder and includes a float and a piston having different cross-sectional areas.

(2) a solar pumping pond that stores seawater supplied from the wave pump discharge pipe and heats it with sunlight; (3) an evaporator;
A temperature difference power generation device or a seawater desalination device having a condenser, a circulating pump, a circulating fluid circuit, and a cold water pump or a cold water wave pump that supplies low-temperature deep water to the condenser (4) Seawater in the solar pumping pond is supplied and circulated to the evaporator of the temperature difference power generation or seawater desalination device, and a marine pasture is created at the seawater outlet of the temperature difference power generation or seawater desalination device.

In addition, instead of the solar pumping pond, one wastewater of the power plant is supplied to the temperature difference power generation or the evaporator of the seawater desalination device,
This is a high-productivity sea area creation system that is equipped with a device that supplies temperature-adjusted seawater that is circulated and merged with the condenser outlet water to the ocean farm.

[Action 1 (a) A wave pump pumps high-temperature surface water to a solar pumping pond. Heat this water with sunlight.

Increase the temperature difference between high temperature surface water and low temperature deep water in temperature difference power generation using low boiling point working fluid. By changing the concentration of seawater in the solar pumping pond, highly concentrated salt water is naturally accumulated and precipitated at the bottom of the solar pond, preventing convection from occurring due to the difference in density, and storing heat in the high concentration layer at the bottom of the pond.

When high-temperature surface water is sucked up by a wave pump and supplied to a solar pumping pond, ■ The supplied spring water is supplied to the evaporator of the temperature difference power generation device before it is warmed up in the solar pumping pond.

■ If the wave height is less than 0.5m, the required seawater cannot be supplied.

In the present invention, such problems are solved by the following means.

(D) Taking advantage of the fact that warm seawater with a large specific gravity is deposited at the bottom and no heat radiation occurs due to convection even if the temperature rises, a high temperature circulation circuit is provided between the bottom of the solar pumping pond and the evaporator.

■ An electric pump and a wave circulation pump are installed in the above circulation circuit to utilize the wave power to its maximum extent, and when the required wave height cannot be obtained, the electric pump circulates.

■ The high-temperature surface water supplied to the solar pumping pond is only the amount of high-temperature water used for temperature regulation at the ocean farm, so there is less surface water supply from the wave pump, and it can be pumped up and stored when waves are high. Good.

(b) The high-temperature water at the bottom of the solar pumping pond is supplied to the evaporator of the temperature difference power generation device, and the supply of heat evaporates working fluids such as ammonia and fluorocarbons.

The seawater that has radiated heat is circulated and once again joins and mixes with high-temperature water at the bottom of the solar pumping pond, becoming high-temperature water.

(Cl) Since the seawater flowing out from the above evaporator still has a sufficiently high temperature, a portion of it is combined with the low-temperature deep water warmed by the condenser.

The temperature is adjusted to the most suitable temperature for fish cultivation, and this warm water is jetted onto the marine farm.

In this way, by using the residual heat of the high-temperature water discharged from the evaporator, a portion of it is mixed with low-temperature deep water heated by the condenser, making it possible to adjust the water temperature to the most suitable temperature for fish growth. is a characteristic technical idea of the present invention.

(d) Deep water containing a large amount of nutrients such as nitrogen and phosphorus, which is ingested by phytoplankton that is food for fish, is mixed with the high-temperature water at the outlet of the evaporator to achieve high nutritional value as a whole and to support the growth of fish. Since high-temperature water suitable for this purpose is discharged to the marine farm, the water area is always highly fertile and productive, and because it is flowing, the seawater is constantly purified.

(e) When there is a power station, use the heated waste water of the power station to move forward! c! Heat is supplied and circulated to the evaporator of the temperature difference power generation or seawater desalination device, and is mixed with the heated wastewater and the condenser outlet water flow to adjust the water temperature and supply appropriately heated water to the marine farm.

In other words, heated wastewater from a power station is approved within a temperature limit of 7°C relative to outside air, but if this heated wastewater is used as a full; Increase.

■ Supply optimally warm water to ocean farms by adjusting the mixture with low-temperature deep water.

[Embodiment 1] In FIG. 1, a wave collecting device 1 is attached to the seawater intake port 2 of the wave pump 3, and collects wave energy and guides it to the wave pump. Nami set ML is tapered LL
This is a device that collects wave motion by combining submerged horizontal plates with different angles and depths, and is installed at the entrance of a wave pump.

The wave pump 3 includes a float piston 4 inside a float cylinder 8. The float piston 4 is connected to a pressure-feeding piston 6 by a hollow shaft 5 having an opening facing the seawater intake port 2 at its lower end. The hollow shaft 5 also serves as a seawater suction pipe.

A suction valve 7 is installed at the upper end of the hollow shaft 5.

The pressure-feeding piston 6 has a smaller cross-sectional area than the float piston 4, and therefore the pressure-feeding piston cylinder 9 also has a smaller diameter. A discharge valve 10 is installed in the cylinder 9, and is connected to a solar pumping pond 12 through a discharge pipe 11. The float piston 4 and the pressure piston 6 freely slide and reciprocate within the cylinder 8.9 due to fluctuations in wave height.

When the wave height decreases and the float piston 4 descends, the discharge valve 10 closes, the pressure in the pressure cylinder 9 becomes negative, the suction valve 7 of the hollow shaft spring water suction pipe 5 opens, and the seawater passes through the hollow shaft 5. It is sucked into the pressure feeding cylinder 9. When the wave height becomes higher and the float piston 4 rises, the discharge valve 10 in the pressure cylinder 9 opens, and the sucked seawater flows into the discharge pipe 11. It is pushed out and flows into the solar pumping pond 12.

The solar tm water pond 12 is installed at a height of 10 to 20 m from the sea surface, and has a translucent evaporation prevention film 13 and 1ll that covers one surface.
It is composed of a heat insulating trench wall 14 forming an Il wall and a bottom surface.

The depth of the solar pumped storage pond 12 is approximately 3 m in consideration of sunlight penetration, and due to the difference in seawater concentration, seawater with a high specific gravity accumulates at the bottom, and heat dissipation occurs due to the generation of convection due to the temperature difference between the upper and lower sides. prevent. In addition, in order to minimize evaporation from the surface,
It is covered with a transparent evaporation prevention film 13. The solar pumping pond 12 is supplied with seawater from the wave pump 3 in an amount corresponding to the amount of evaporation from the surface and the amount of seawater used for adjusting the optimal temperature for the marine farm 24 aquaculture.

A heat storage seawater layer is formed in the depth direction of the solar pumping pond 12 according to the distribution of seawater concentration, the temperature distribution is highest at the bottom, and the surface layer 12 simply serves as a heat insulating layer.

In order to supply water from the T-wave pump to the solar pumping pond 12 without disturbing the high-temperature water circulation flow at the bottom of the solar pumping pond 12, the water from the piping 11 is sprinkled on the surface of the solar pumping pond. .

The high-temperature seawater IJt1 loop connects the high-temperature seawater layer at the bottom of the solar pumping pond 12 and the evaporator 20. High temperature water circulation pump 25° high + fi
It is composed of rm water piping 26. With this configuration, a part of the deep water with the highest temperature in the solar pumping pond 12 is used, so the temperature distribution in the depth direction of the solar pumping oil is not disturbed too much. 20 can be constantly supplied with high temperature water.

If the wave pump 25a is used instead of the high-temperature seawater circulation circuit (Fi [pump 25), the internal power can be reduced and circulation can be performed effectively. Considering the case where the wave height is not very high, the wave pump 25a can be replaced with the circulation pump 25. It is desirable to use them together, and an example thereof is shown in FIG.

Details of the wave pump are shown in FIG. 2 and will be explained later.

Low-temperature deep water 15 rich in nutrients at a depth of 100 to 300 m is pumped up by a cold water pump 16 or cold water wave pump 16a that pumps up low-temperature deep water, and cools a condenser 17 provided at the outlet side of the pump system 16. ,
The low boiling point working fluid in the circulation path 1B is cooled. Capacitor 17. Circulation pump 19. The evaporator 2015 and the turbine generator 21 are connected through the fluid circulation circuit 18, and these members generate electricity by temperature difference! Ii placement 22 is configured.

The liquefied fluid at the outlet of the condenser 17 is transferred to the circulation pump 1
9, and is heated and vaporized in the evaporator 20 by high temperature water from the solar pumping pond 12. This high-temperature vaporized fluid recovers power by the turbine 21 and generates electricity.

At the outlet of the capacitor 17, there is a uranium and lithium adsorption tube 23.
is provided. Further, a bypass circuit 29 having a regulating valve 28 is connected to the inlet of the uranium recovery adsorption column 23 from the high temperature circulating water outlet 27 of the evaporator 2o.

The uranium/lithium recovery adsorption cylinder 23 is available in linear type, in which seawater is introduced into a multi-phase adsorbent cell using a special inorganic or organic adsorbent, and in loop type, in which m-rings are used. It is desirable to use an adsorbent that has good properties, adsorption and desorption properties, and a large amount of absorption.

The uranium and lithium recovery cylinder 23 is preferably installed in a cold water/hot water confluence pipe because it requires a large amount of water, but if there is a problem, it is installed in a cold water pipe. Hot water pipes are relatively prone to microbial adhesion and corrosion, so from this point of view it is not recommended to install them on hot water pipes.
It is preferable to periodically circulate cold water through the evaporator and hot water pipes.

A marine pasture 24 is formed at the seawater outlet of the adsorption cylinder 23. In order to provide appropriate water temperature to the fish in the marine pasture 4, a branch pipe 29 from the evaporator 20 is provided in the condenser outlet pipe, and the flow rate is adjusted by a valve 28. The water temperature at which the growth rate of fish reaches its maximum varies depending on the species, but is approximately 25 to 28 degrees Celsius.

According to the above embodiment, a wave pump, a solar pumping pond, a temperature difference power generation device, and a uranium/lithium recovery cylinder are combined to create an energy-saving, multipurpose comprehensive system in conjunction with the creation of a marine farm. can.

Next, the embodiment shown in FIG. 2 will be described. The embodiment shown in FIG. 2 is the same as that shown in FIG. 1 except that the temperature difference power generation device 22 in FIG. be. In this example, a branch pipe 31 having a valve 30 branched from the inlet of the circulation pump 25 of the high temperature seawater circulation path 26 is connected to the pressure feeding cylinder 9 via the suction valve 7 of the wave pump 3. A seawater suction pipe 32 having a switching valve 33 is installed in the wave pump 3 .

When it is necessary to supply fresh seawater to the solar pumping pond 12, the valve 30 is closed and the pump 25 is operated to circulate high-temperature water, while the suction valve 33 of the wave pump 3 is fully opened and the discharge valve 10 is activated. ．． Seawater is supplied to the solar pumping pond 12 via the supply pipe 11.

When seawater is not supplied to the solar pumping pond 12, the seawater intake valve 33
fully closed, stopped the electric pump 25, fully opened the first branch pipe valve 30, and switched the wave pump 3 to use the 7X generator 20.
The high temperature water at the outlet is sent to a solar pumping pond. The wave pump 3 is provided with seawater intake ports 2.degree. 2a on the seawater inlet sides of the double pistons 4.6, respectively, to increase the piston driving force.

The embodiment of the second country includes a seawater desalination device instead of the temperature difference power generation device of the embodiment of FIG. 1, and is a comprehensive system for obtaining fresh water from seawater, which can be used for energy saving and multipurpose purposes.

[Effects of the invention 1 The present invention has the following excellent effects.

(b) A wave collection device collects wave height energy, and a wave pump pumps high-temperature surface water to a solar pumping pond to utilize wave energy.

(b) Solar pumped storage ponds save energy because they receive sunlight and increase the temperature of the seawater in the pond, especially in the lower layer, and store heat.

(c) Heat exchange between the high-temperature water in the solar pumping pond and the low-temperature deep seawater increases the temperature difference in the temperature difference power generation device or seawater desalination device, making it possible to generate electricity more efficiently. A wave pump can be used for the circulation pump of the high-temperature water pump in the optical pumping pond or for pumping low-level deep-sea water, thereby reducing the in-house power.

(d) Since the high temperature water in the solar pumping pond is circulated through the evaporator of the temperature difference power generation device, the stored high temperature is always maintained.

(e) 1 degree difference i! ! The low-temperature deep-sea water discharged from the equipment or seawater desalination equipment contains a large amount of high-Song a, and a large amount of phytoplankton, which supplies oxygen and serves as a source of protein nutrition for small fish, occurs, concentrating fish schools. Can be done.

In this way, it is possible to efficiently construct an artificial marine pasture having high-nutrient ocean currents in the surface waters of the sea.

(To J) The high temperature water at the outlet of the evaporator above is
M'! By mixing it with RII water and adjusting the seawater temperature to the 3II temperature for fish growth, it can be supplied to the marine farm, so the fish grow quickly.

(g) Furthermore, uranium and lithium can be recovered from a large amount of wastewater from a temperature difference power generation device or a seawater desalination device.

(H) Due to the synergistic effect of the above effects, energy saving and
It is possible to create a highly efficient and highly productive marine farm.

[Brief explanation of the drawing]

Fig. 1 is a flow sheet of the embodiment system of the present invention;
The figure is another example system flow sheet, No. The figure is a flow sheet for a pumped storage power plant, and Figure 4 is a flow sheet for a temperature difference power generation device. l...Wave gathering device 2.2a--Seawater intake 3...Wave pump 4--Float piston 5
−・・Shaft (suction pipe) 6−・Pressure piston 7・
- Suction valve 8.9-... Cylinder 10--Discharge valve 11-...Discharge pipe 12-...Solar pumping pond 13-...Evaporation prevention film 14...Insulation 1 Wall construction
15...Low water temperature deep water 16.16a...Cold water pump 17-...Condenser 18-Axis fluid circulation circuit 19
-...Circulation pump 2o...Evaporator 21-...Turbine generator 22...Temperature difference power generation device 23-...Adsorption tube 24-...Marine farm 25.25a...Circulation high temperature pump 26-...High temperature Seawater circulation path 27-...High temperature circulation water flow 0
28-... Regulating valve 29... Bypass circuit 3
0-...Valve 31-=Branch pipe 32-...Seawater intake pipe 33...Seawater intake valve (switching valve) 34--Seawater desalination equipment 35-...Fresh water applicant
SEETEX Co., Ltd.

Claims (1)

[Claims] 1. A wave pump that reciprocates inside a cylinder and has a float and a piston with different cross-sectional areas, and a solar pump that stores seawater supplied from the wave pump discharge pipe and heats it with sunlight. water pond, evaporator, condenser,
The temperature difference power generation device or seawater desalination device includes a circulation pump, a circulation fluid circuit, and a cold water pump or a wave pump that supplies low-temperature deep water to the condenser, and the temperature difference power generation device uses seawater in the solar pumping pond. Alternatively, a high-productivity sea area creation system characterized by supplying and circulating seawater to an evaporator of a seawater desalination device and creating a marine pasture at the outflow portion of the temperature difference power generation device or the seawater desalination device. 2 Instead of the solar pumping pond, a circulation path that supplies and circulates heated wastewater from the power station to the evaporator, and seawater whose temperature is adjusted by combining the heated wastewater and the condenser outlet water to the marine farm. The high production sea area creation system according to claim 1, further comprising a supply route.