JPS63150474A - High productivity sea region construction system - Google Patents

Abstract

PURPOSE:To improve the economic efficiency of the whole system by carrying out the temperature difference power generation by pumping up the low temperature deep layer water in the sea region and recovering uranium, etc., by the discharged water in the temperature difference power generation and utilizing the discharged water after the recovery of uranium, etc., for the artificial culture for fish. CONSTITUTION:The low temperature deep layer water 11 containing a large quantity of high nutrients at a water depth of 300-500 m is pumped up by a cooling water pump 13, and cools the inside circulation fluid in a fluid circulation passage 19 in a condenser 14. Further, the high temperature surface layer water 12 is pumped up by a warm water pump 17, and the inside circulation fluid is evaporated in a pumping-up evaporator 22. The working fluid having a high energy performs energy conversion and generates an electric energy, during passing through a turbine generator 20. While, the high temperature surface layer water 12 is introduced into an uranium recovering adsorbing cylinder 15 together with the water cools the condenser 14. An automatic provender feeding device is installed into the pipe of the uranium recovering adsorbing cylinder 15, and the discharged water containing provender is discharged into a low temperature ocean stock farm 16.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention takes advantage of the fact that schools of fish gather in high-nutrient sources of low-temperature deep water and sea areas with slightly different temperatures.

A total system that creates a high-productivity area near the sea surface by pumping low-temperature deep water, generates electricity by the temperature difference with high-temperature surface water, and recovers uranium, lithium, etc. using high-temperature water flow.・Regarding the system.

[Conventional technology]

Since there is no prior art related to the above-mentioned total system, individual technologies constituting the total system will be briefly explained.

(1) Pumped storage power generation system Figure 2 shows an electric pump 1, a pumped storage pond 3, and a 4t water turbine generator.
- Connected by water conduits 2 and 5, operate the electric pump 1 to pump water to the pumping pond 3 during periods when electricity usage is low;
A method is shown in which water is guided to the water turbine generator 4 to generate electricity during the period when electricity is in high demand. This is a method of storing electric energy as potential energy and extracting it when needed, but it requires energy equal to or greater than the energy generated by the water turbine generator 4 to pump water.
It cannot be an energy gain.

(2) Temperature difference power generation system! As shown in Figure 3, the low boiling point working fluid closed cycle circuit 0
1 to turbine generator 02. Evaporator 03% circulation pop/pu 04
A low-temperature deep water pipe 06 is guided to the condenser 05 to cool the working fluid after the turbine.

In addition, high temperature surface water is connected to the evaporator through conduit 07,
Heat this and evaporate it. The evaporated high-temperature working fluid rotates the turbine generator 02 to obtain output.

In such a power generation system with one temperature difference, the power generation efficiency is large and the unit cost per power generation is 150 yen/KW for a low output type.
It becomes five.

(3) Uranium/lithium recovery device A uranium/lithium recovery cylinder is used to recover uranium, etc. from seawater.

The content in seawater is 53 ppb (3 μj, i/l)
Even if 100% recovery were performed, it would be necessary to circulate 300,000 tons of seawater to obtain IKf's uranium. If we evaluate the economic efficiency by taking into account the cost of equipment and the power cost of the recirculation tube, we will not be able to use it on a market basis because the price of uranium is currently extremely low.

(4) Ocean current lift devices Concrete blocks or cloth updraft devices with floats are sometimes laid on the seabed, but these use natural ocean currents and cannot generate large amounts of outward current. .

[Problem that the invention seeks to solve]

Conventional systems such as those mentioned above often have equipment installed on the vehicle for a single purpose, such as wave pumps, turbine power generation, and marine aquaculture.

Although it may be surprising, using natural energy in a single form is economically disadvantageous and is hardly ever put into practical use, with the exception of ocean farms and pumped storage power generation.

In addition, in the uranium recovery system, no matter how good the adsorbent that recovers uranium is developed, a large amount of seawater of more than 300,000 tons per uranium IKf will still be circulated, so the total system We need to think about reducing costs.

[Means for solving problems]

Temperature difference power generation and seawater uranium/lithium recovery systems are uneconomical and unprofitable on their own. A multi-purpose total system will be adopted that integrates systems that require circulating large amounts of seawater, such as temperature difference power generation, uranium recovery, and circulating aquaculture systems, and shares the same power for circulating seawater.

[Effect]

Low-temperature deep water is sucked up to generate temperature difference power generation, uranium and lithium are recovered from the wastewater generated by the temperature difference power generation, and the wastewater after uranium and lithium recovery is used for artificial aquaculture. Such a total system improves economic efficiency.

[Example] In FIG. 1, 11 is low-temperature deep water rich in nutrients at a depth of 300 to 500 m, 12 is high-temperature surface water above the low-temperature deep layer 11, and 13 is low-temperature deep water that absorbs the low-temperature deep water 11. 14 is a condenser installed at the outlet of the cold water pump 13, 15 is a uranium recovery adsorption cylinder installed at the outlet of the condenser 14, 16 is a marine farm installed at the outlet of the uranium recovery adsorption cylinder, and 17 is a high temperature A hot water pump 18 sucks surface water, a fluid circulation path 19, a generator 20. This is a high criticality differential power generation system having a circulation pump 21 and an evaporator 22.

In such a device, the low temperature deep water 11 sucked up by the cold water pump 13 cools the internal circulating fluid of the fluid circulation M19 in the co/de/server 14.

Similarly, the high temperature surface water 12 is pumped up by the hot water pump 17, and the internally circulating fluid is evaporated in the evaporator 22. When this high-energy working fluid leaves the turbine and passes through the machine 20, it undergoes energy conversion and generates electrical energy.

The high temperature surface water 12 is.

After the internally circulating fluid is heated in the evaporator 22, it is led to the uranium recovery adsorption column 15 together with the water that has cooled the condenser 14.

From the viewpoint of water volume, it is preferable to install the uranium recovery adsorption cylinder 15 in a confluence pipe of cold water and 1 water.However, as hot water pipes are relatively prone to microbial adhesion and corrosion, maintenance and management should be avoided. In this respect, it is better to install it in the cold water pipe, and it is not preferable to install it in the hot water pipe.

In order to prevent O accretion and acceleration of corrosion of hot water pipes and evaporators, it is preferable to periodically circulate cold water through the evaporators and hot water pipes.

As the uranium recovery adsorption cylinder 15, there are two types: a type that introduces seawater into a cell equipped with a multi-phase adsorbent using a special inorganic or organic adsorbent, and a type that uses a circulating loop type. However, it is desirable to use an adsorbent with good selectivity, adsorption/desorption properties, and large absorption capacity. An automatic feeding device (not shown) is provided in the drain pipe of the uranium recovery adsorption cylinder 15, and a discharge pipe that opens into sea surface water is installed in the automatic feeding device. In this way, the low temperature water containing feed is discharged into the marine pasture 16.

An artificial ocean current is induced in Ocean Farm 16. This artificial ocean current promotes the generation of plankton and the growth of fish.

〔Effect of the invention〕

(1) It is possible to mix low-temperature deep water, which is highly nutritious, with high-temperature surface water at the sea surface and to flow and diffuse it.
It is possible to create highly productive sea areas suitable for the activation and proliferation of marine life.

(2) At the same time, energy can be converted by utilizing the temperature difference between low-temperature deep water and high-temperature surface water to generate one power generation.

(3) It is possible to recover uranium and lithium from seawater by using a seawater circulation pump that generates temperature difference electricity.

(4) In this way, aquaculture is efficient in terms of the overall system.

It can generate electricity and recover useful substances from seawater.

It is extremely economical as it saves maintenance costs and production costs compared to the production cost of each unit alone.

[Brief explanation of the drawing]

FIG. 1 is a schematic layout diagram of an embodiment of the high-productivity sea area creation system of the present invention, FIG. 2 is an explanatory diagram of a conventional pumped storage power generation system, and FIG. 3 is a schematic layout diagram of a conventional temperature difference power generation system. 11--Low temperature deep water 12-High temperature surface water 13-Cold water pump 14-Condenser 15-Uranium recovery adsorption cylinder 16-Marine farm 17-Hot water pump 18-High temperature difference power generation system

Claims (1)

[Claims] Circulation pumps, evaporators, turbine generators, condensers,
and a temperature difference power generation device having a circulating fluid path that communicates each of the members, a cold water pump that supplies low-temperature deep water to the condenser, and a hot water pump that supplies high-temperature surface water to the evaporator. A system for creating a high-productivity sea area, characterized in that a uranium/lithium recovery device is installed in a seawater discharge channel, and a marine pasture is created in the seawater outlet.