A deep sea mining energy recovery system combining temperature difference energy generation

Abstract

The present invention discloses a deep-sea mining energy recovery system combined with temperature difference energy power generation, which includes a power generation system, a separation system and a seabed mining vehicle. The power generation system is mainly based on temperature difference energy power generation technology, and recovers the temperature difference energy of the cold seawater lifted from the seabed during deep-sea mining to generate electricity and fresh water; the separation system is mainly used to quickly separate ore and cold seawater from the tailings; the seabed mining vehicle is used to collect seabed minerals. The present invention uses the cold seawater lifted from the seabed during deep-sea mining as a coolant for temperature difference energy power generation, which can effectively recycle the energy consumed in the pump lifting process during deep-sea mining and generate fresh water; at the same time, the present invention will flocculate the stationary tailings sediments during the treatment of deep-sea mining tailings, and will increase the temperature of the tailings during the temperature difference energy power generation process, which solves the influence of the plume flow of the tailings sediments and the influence of the cold seawater on the local cooling of the ocean, and reduces the discharge depth of the tailwater pipe, reducing the manufacturing cost of the tailwater system.

Description

Technical Field

[0001] The present invention relates to the field of deep sea mining, and in particular to a deep sea mining energy recovery system combined with temperature difference energy power generation technology. Background Art

[0002] With the development of modern machines and tools, communication technology, computers and global energy production, the demand for raw metal materials such as copper, manganese, cobalt, silver, gold and zinc is growing. However, due to the continuous mining of land-based minerals, the reserves and types of ores have dropped significantly, so people have turned their attention to the ocean, which accounts for 70% of the earth's area. The ocean is rich in mineral resources, among which the most important are polymetallic nodules, cobalt-rich crusts and polymetallic sulfides. They are rich in nickel, cobalt, copper, manganese, gold, silver and other metals, and the total reserves are dozens to thousands of times higher than those on land. Therefore, deep-sea mining is an important means to meet the demand for rare minerals in today's rapidly developing society.

[0003] Jixian Guxian Pump Industry Co., Ltd. has disclosed a deep-sea mining method and deep-sea mining device (CN112647950A), which aims to better conduct mineral selection and separation on the seabed to reduce the difficulty of deep-sea mining; Jinao Deep Sea Equipment Technology (Shenzhen) Co., Ltd. has disclosed a rapid risk avoidance system for deep-sea mining (CN216665606U), and proposed an emergency detachment structure and method for mining ships under severe sea conditions. The technology disclosed at this stage focuses more on how to safely and effectively collect and lift minerals, but ignores the potential high-quality temperature difference energy in the collection process. Therefore, the present invention proposes a deep-sea mining energy recovery system combined with temperature difference energy power generation technology to recycle this high-quality temperature difference energy and treat the tailings of the mine to increase the energy utilization efficiency of deep-sea mining, while solving the problem of mine tailing pollution. Summary of the invention

[0004] Purpose of the invention: The present invention aims to provide a deep-sea mining energy recovery system that combines temperature difference energy to generate electricity and reduces environmental impact.

[0005] Technical solution: A deep-sea mining energy recovery system combined with temperature difference energy generation of the present invention, the deep-sea mining energy recovery system comprises a power generation system, a seabed mining vehicle and a separation system;

[0006] The power generation system is a power generation system based on temperature difference energy generation. The power generation system extracts hot seawater from the surface of the deep sea to generate hot water vapor for power generation. The water vapor drives the generator to generate electricity. The generated electricity can then serve various links of deep-sea mining.

[0007] The seabed mining vehicle is used to collect seabed minerals;

[0008] The separation system is connected to the seabed mining vehicle and the power generation system respectively. The separation system is used to receive a mixture of ore and tailings cold seawater collected by the seabed mining vehicle, and then separate the ore and tailings cold seawater in the mixture; the tailings cold seawater flowing out of the separation system flows into the power generation system as a coolant for temperature difference energy power generation.

[0009] Furthermore, the power generation system includes a surface hot sea water tank, a solar heating energy storage system connected to the surface hot sea water tank, a flash chamber connected to the solar heating energy storage system, a generator set connected to the flash chamber, and a power storage tank connected to the generator set; a condensation chamber connected to the steam outlet of the generator set, a fresh water tank connected to the condensation water outlet of the condensation chamber, and a sedimentation tank connected to the seawater outlet of the condensation chamber.

[0010] Furthermore, the power generation system includes a surface hot sea water tank, a solar heating energy storage system connected to the surface hot sea water tank, a flash chamber connected to the solar heating energy storage system, a working fluid evaporation tank connected to the flash chamber, a generator set connected to the working fluid evaporation tank, a condensation chamber connected to the working fluid evaporation tank and the generator set respectively, an electricity storage tank connected to the generator set, a fresh water tank connected to the condensed water outlet of the working fluid evaporation tank, and a sedimentation tank connected to the seawater outlet of the condensation chamber; wherein the inlet of the working fluid evaporation tank is connected to the outlet of the condensed working fluid of the condensation chamber, and the water vapor outlet of the generator set is connected to the water vapor inlet of the condensation chamber.

[0011] Furthermore, the solar heating energy storage system includes a support frame, which contains several layers of storage plates, each layer of storage plates is provided with a solar heat collecting tube, and adjacent solar heat collecting tubes are connected by U-shaped connecting tubes; the support frame is surrounded by a focusing cover.

[0012] Furthermore, the working fluid evaporation cabin includes an outer wall of the cabin, on which are respectively provided a hot water vapor inlet, a fresh water outlet, a hot working fluid gas outlet, a working fluid liquid inlet and a working fluid liquid replenishment port; a working fluid chamber is provided inside the outer wall of the cabin, and a heat conduction pipe is provided inside the working fluid chamber, one end of the heat conduction pipe extending out of the outer wall of the cabin is the hot water vapor inlet; the other end of the heat conduction pipe extending out of the outer wall of the cabin is the hot water vapor inlet.

[0013] Furthermore, the working fluid evaporation chamber also includes a plurality of sealing rings, which are respectively installed on the hot water vapor inlet, the fresh water outlet, the hot working fluid gas outlet, the working fluid liquid inlet and the working fluid liquid replenishing port.

[0014] Furthermore, the separation system includes a mixing tank, a tailings cold seawater tank and an ore storage tank respectively connected to the mixing tank; wherein the tailings cold seawater tank is connected to the power generation system to provide the power generation system with coolant for condensing water vapor.

[0015] Furthermore, the ore dressing and separation system includes a cabin, which is connected to an ore inlet pipe, a water outlet for discharging cold seawater from the ore tailings is opened at the bottom of the cabin, and an ore outlet for discharging ore is opened near the water outlet at the bottom of the cabin.

[0016] Furthermore, the cabin body includes a hollow inner wall of the cabin, an outer cabin wall is arranged outside the hollow inner wall of the cabin, and a reinforced filling is arranged between the outer cabin wall and the hollow inner wall of the cabin.

[0017] Furthermore, the ore inlet pipe comprises a ore inlet hard pipe and a ore inlet soft pipe which are connected in sequence, wherein the ore inlet hard pipe extends out of the cabin body, and the ore inlet soft pipe is placed inside the cabin body.

[0018] The basic principle of the present invention is:

[0019] (1) Based on the temperature difference between the surface and bottom seawater of the ocean, combined with the characteristics of the deep-sea mining process, temperature difference energy is generated through flash evaporation technology, thereby realizing the energy recovery and utilization of temperature difference energy in the deep-sea mining process;

[0020] (2) The flash evaporation technology used in the present invention refers to the partial evaporation that occurs when the boiling point of a saturated liquid (such as water) drops below the ambient temperature due to a decrease in pressure;

[0021] (3) The temperature difference energy power generation technology used in the present invention refers to the technology of using the surface seawater (25℃-28℃) heated by solar energy in the ocean as a high-temperature heat source, and the bottom seawater at a depth of 4000-6500m for deep-sea mining, with a temperature of 1-2℃, to generate electricity using a thermal cycle system composed of a heat engine. From the high-temperature heat source to the low-temperature heat source, it is possible to obtain effective energy with a total temperature difference of about 24℃-27℃;

[0022] (4) The working fluid has a lower boiling point, which can improve the evaporation efficiency and thus improve the power generation efficiency of the entire system.

[0023] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0024] (1) The present invention uses the cold seawater lifted from the seabed during deep-sea mining as the coolant for temperature difference energy power generation, which can effectively recycle the energy consumed in the pump lifting process during deep-sea mining (generally, the cold seawater for temperature difference energy power generation is taken from a sea depth of 400-1000m, with a total temperature difference of 15-20°C, while the deep-sea mining extraction depth used in the present invention is deeper, with a total temperature difference of about 24°C-27°C, and is therefore more effective).

[0025] (2) The present invention combines the temperature difference energy generation technology with deep-sea mining, and the product includes fresh water, which can provide fresh water necessary for the life of the workers in the deep-sea mining process;

[0026] (3) The system designed by the present invention will flocculate the stationary tailings sediments during the treatment of deep-sea mining tailings, and will heat up the tailings during the temperature difference energy power generation process. On the one hand, it solves the impact of the plume flow generated by the returned sediments on the marine environment; on the other hand, the heated tailings discharge avoids cooling a large area of ​​seawater, and solves the impact of local temperature imbalance in the ocean caused by deep-sea mining tailings on the marine ecosystem; in addition, by treating the tailings, the tailings can be directly discharged, reducing the manufacturing cost of the super-long tailwater pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 : A schematic diagram of the overall structure of the system of the present invention;

[0028] Figure 2 : A schematic diagram of the structure of the solar energy heating energy storage system of the present invention;

[0029] Figure 3 : A schematic diagram of the light-chasing system structure of the present invention;

[0030] Figure 4 : A schematic diagram of the structure of the mineral separation system of the present invention;

[0031] Figure 5 : Schematic diagram of the system composition of Example 2 of the present invention;

[0032] Figure 6 : Schematic diagram of the appearance structure of the working fluid evaporation chamber of the present invention;

[0033] Figure 7 : Schematic diagram of the cross-sectional structure of the working fluid evaporation chamber of the present invention. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0035] Example 1

[0036] like Figure 1 As shown, an embodiment of the present invention provides a deep-sea mining energy recovery system combined with temperature difference energy power generation, which is mainly composed of a power generation system 1, a separation system 2, a seabed mining vehicle 3 and a connecting pipe system, and includes electromechanical equipment of a traditional mining system to ensure the mining of deep-sea ore. The power generation system 1 is mainly based on temperature difference energy power generation technology, and the temperature difference energy of the cold seawater lifted during deep-sea mining is recovered to generate electricity and fresh water; the separation system 2 is mainly used to quickly separate ore and cold seawater at the tailings of the mine; the seabed mining vehicle 3 is used to collect seabed minerals; the power generation system 1 and the separation system 2 are arranged on a mining ship, and the seabed mining vehicle 3 operates on the seabed to mine deep-sea minerals.

[0037] like Figure 1As shown, the power generation system 1 includes a surface hot sea water tank 11, a solar heating energy storage system 12, a flash chamber 14, a generator set 15, an electricity storage tank 16, a condensing chamber 17, a fresh water tank 18 and a sedimentation tank 19 as well as a hot sea water pump 41 and a drainage pump 43; wherein, the surface hot sea water tank 11 is connected to the solar heating energy storage system 12, the solar heating energy storage system 12 is connected to the flash chamber 14, the generator set 15 is connected to the flash chamber 14, and the electricity storage tank 16 is connected to the generator set 15; the condensing chamber 17 is connected to the steam outlet of the generator set 15, the fresh water tank 18 is connected to the condensed water outlet of the condensing chamber 17, and the sedimentation tank 19 is connected to the seawater outlet of the condensing chamber 17.

[0038] Specifically, the hot sea water pump 41 pumps the surface hot sea water into the surface hot sea water tank 11, and after being further heated by the water pump 5, it enters the flash chamber 14 and is processed by the flash evaporation technology under the pumping of the water pump 5, forming water vapor to drive the generator set 15 to generate electricity, and is stored in the power storage tank 16, which can be reused in the deep-sea mining process. The hot water vapor after driving the generator set to generate electricity enters the condensation chamber 17, interacts with the cold sea water of the tailings separated by the separation system 2, condenses into fresh water, and flows into the fresh water tank 18, and then provides fresh water for the staff on the mining ship through filtration; after the cold sea water of the tailings completes the condensation operation in the condensation chamber 17, it flows into the sedimentation tank 19, and is discharged into the ocean after the sediment is precipitated through electric flocculation.

[0039] like Figure 2 , 3 As shown, the solar heating energy storage system 12 comprises a hot seawater inlet 121, a solar heat collecting tube 122, a U-shaped connecting tube 23, a high-temperature hot seawater outlet 124, a support frame 125 and a condenser 126. The support frame 125 comprises four layers of storage plates, each layer of which is provided with a solar heat collecting tube 122, and adjacent solar heat collecting tubes 122 are connected by U-shaped connecting tubes 123; the condenser 126 is arranged around the support frame 125.

[0040] Specifically, the hot seawater of the surface hot seawater tank 11 flows into the solar heating energy storage system 12 through the hot seawater inlet 121, collects solar energy through the solar heat collecting tube 122 for heating, and then flows out through the high-temperature seawater outlet 124, and is pumped to the flash chamber 17 through the water pump 5. The solar heat collecting tube 122 is arranged on the support frame 125, connected by the U-shaped connecting tube 123, so as to capture more solar energy; the focusing cover 126 is an open arc-shaped ring structure that can reflect sunlight to enhance the heating effect of sunlight on seawater, and is driven by the light chasing system 13, with the opening facing the direction with the strongest solar energy, so as to capture solar energy to a greater extent; the light chasing system 13 includes a power supply 131, a photoresistor array 132, a controller 133, a motor 134 and a driving wheel 135. The power supply 131 provides power to the light-chasing system 13, and the photoresistor array 132 is evenly distributed around the condenser 126 to capture the peak direction of solar energy, so that the controller 133 controls the motor 134 to drive the driving wheel 135 to drive the condenser 126 to rotate and focus the light.

[0041] like Figure 1 As shown, the separation system 2 comprises a mixing tank 21, a ore dressing separation system 22, a tailing cold seawater tank 23, and an ore storage tank 24. The mixing tank 21 is used to load a mixture of ore, bottom cold seawater and sediment; the seawater tank 23 and the ore storage tank 24 are respectively connected to the mixing tank 21; the tailing cold seawater tank 23 is connected to the power generation system to provide the power generation system with a coolant for condensing water vapor.

[0042] Specifically, the mixing tank 21 is used to store the ore mixture collected by the seabed mining vehicle 3 and lifted to the mining ship by the lifting pump 42, and then the ore dressing separation system 22 separates the mixture into ore and tailings cold seawater (including seabed cold seawater and sediment) and stores them in the ore rough storage tank 24 and the tailings cold seawater tank 23 respectively, and the tailings cold seawater tank 23 is connected to the condensation chamber 17 by the water pump 5, and the tailings cold seawater pump of the tailings cold seawater tank 23, such as the power generation system 1, has participated in the condensation.

[0043] like Figure 4 As shown, the ore dressing and separation system 22 includes a cabin, the cabin is connected to an ore inlet pipe, a water outlet 226 for discharging cold seawater of the tailings is provided at the bottom of the cabin, and an ore outlet 227 for discharging ore is provided at the bottom of the cabin near the water outlet 226. The cabin includes a hollow inner wall 224 of the cabin, an outer cabin wall 223 is provided outside the hollow inner wall 224 of the cabin, and a reinforced filling 225 is provided between the outer cabin wall 223 and the hollow inner wall 224 of the cabin. The ore inlet pipe includes an ore inlet hard pipe 221 and an ore inlet hose 222 connected in sequence, wherein the ore inlet hard pipe 221 extends out of the cabin, and the ore inlet hose 222 is placed inside the cabin.

[0044] Specifically, the ore dressing and separation system 22 includes an ore inlet hard pipe 221 , an ore inlet hose 222 , a cabin outer wall 223 , a cabin hollow inner wall 224 , a reinforced filling 225 , a water outlet 226 and an ore outlet 227 .

[0045] The ore inlet hard pipe 221 is used to transport the ore mixture from the mixing chamber 21 to the ore dressing and separation system 22, and the ore inlet hose 222 buffers the incoming ore mixture so that the ore mixture falls along the hollow inner wall 224 of the chamber; the chamber is composed of the outer wall 223 of the chamber, the hollow outer wall 224 of the chamber and the reinforced filling 225, and a flow channel is formed. When the ore enters the chamber, the ore particles fall into the chamber, and the tailing cold seawater flows through the hollow inner wall 224 of the chamber and finally flows into the tailing cold seawater tank 23 from the outlet 226. After the ore is left to stand to separate the liquid, it can be transported to the ore storage tank 24 by the conveyor belt through the ore outlet 227 to complete the separation work; the tailing cold seawater tank 23 is located below the deck to prevent the cold seawater from heating up due to sunlight and affecting its condensation effect.

[0046] Example 2

[0047] like Figure 5 As shown, an embodiment of the present invention provides a deep-sea mining energy recovery system combined with temperature difference energy power generation. This embodiment adds a low-boiling point Freon working fluid liquid as a circulating medium. Compared with Example 1, the composition of the power generation system 1 is slightly changed. The power generation system includes a surface hot sea water tank 11, a solar heating energy storage system 12 connected to the surface hot sea water tank 11, a flash chamber 14 connected to the solar heating energy storage system 12, a working fluid evaporation tank 50 connected to the flash chamber 14, a generator set 15 connected to the working fluid evaporation tank 50, a condensation chamber 17 connected to the working fluid evaporation tank 50 and the generator set 15 respectively, a power storage tank 16 connected to the generator set 15, a fresh water tank 18 connected to the condensed water outlet of the working fluid evaporation tank 50, and a sedimentation tank 19 connected to the seawater outlet of the condensation chamber 17; wherein the inlet of the working fluid evaporation tank 50 is connected to the outlet of the condensed working fluid of the condensation chamber 17, and the water vapor outlet of the generator set 15 is connected to the water vapor inlet of the condensation chamber 17.

[0048] Specifically, the hot sea water pump 41 pumps the surface hot sea water into the surface hot sea water tank 11, and after being further heated by the water pump 5, it enters the flash chamber 14 and is processed by the flash evaporation technology under the pumping of the water pump 5 to form hot water vapor, and the hot water vapor enters the working fluid evaporation chamber 50, so that the low-boiling point working fluid is fully heated and vaporized, and the generator set 15 is driven to generate electricity through the one-way valve, and is stored in the power storage chamber 16, while the hot water vapor forms fresh water after the working fluid is cooled and stored in the fresh water tank 18. The hot working fluid vapor after the generator set generates electricity enters the condensation chamber 17, interacts with the cold sea water of the mine tail separated by the separation system 2, and is pumped into the working fluid evaporation chamber 50 for recycling through the one-way working fluid pump 45 after being cooled into the working fluid liquid.

[0049] like Figure 6 , 7 As shown, the working fluid evaporation chamber 50 is composed of a cabin outer wall 51, a hot water vapor inlet 52, a fresh water outlet 53, a heat pipe 54, a working fluid chamber 55, a hot working fluid gas outlet 56, a working fluid liquid inlet 57, a working fluid liquid replenishing port 58, and a sealing ring. Among them, the hot water vapor inlet 52, the fresh water outlet 53, the hot working fluid gas outlet 56, the working fluid liquid inlet 57 and the working fluid liquid replenishing port 58 are respectively opened on the cabin outer wall 51, the working fluid chamber 55 is arranged in the cabin outer wall 51, the heat pipe 54 is arranged in the working fluid chamber 55, one end of the heat pipe 54 extends out of the cabin outer wall 51, that is, the hot water vapor inlet 52; the other end of the heat pipe 54 extends out of the cabin outer wall 51, that is, the hot water vapor inlet 52.

[0050] The hot water vapor reacts with the working fluid in the working fluid chamber 55 through the hot water vapor inlet 52 and the heat conducting pipe 54 to gasify the working fluid, and the hot water vapor is condensed into fresh water under the action of the working fluid and flows out from the fresh water outlet 53; the outer wall 51 of the cavity surrounds the working fluid evaporation chamber 50 to form a closed working fluid chamber 55, and the working fluid is stored in the working fluid chamber 55. After being heated by the hot water vapor, the high-temperature and high-pressure working fluid vapor is ejected from the hot working fluid gas outlet 56 to drive the generator set 15 to generate electricity; the working fluid condensed by the interaction with the cold seawater of the mine tailings separated by the separation system 2 enters the working fluid chamber 55 through the working fluid inlet 57 for recycling; the working fluid replenishment port 58 is arranged on the top of the side of the working fluid evaporation chamber 50 to facilitate the replenishment of the working fluid consumption; the sealing ring is made of flexible anti-corrosion material and is used at each inlet and outlet to improve the airtightness of the chamber, on the one hand to prevent the leakage of the working fluid, and on the other hand to ensure that the working fluid gas generated by evaporation has a higher air pressure.

Claims

1. A deep sea mining energy recovery system combined with temperature difference energy generation, characterized in that: The deep-sea mining energy recovery system comprises a power generation system, a seabed mining vehicle and a separation system; The power generation system is a power generation system based on temperature difference energy generation. The power generation system extracts surface hot seawater from the deep sea to generate hot water vapor for power generation. The water vapor drives the generator to generate electricity. The generated electricity can then serve various links of deep-sea mining. The power generation system includes a surface hot seawater tank, a solar heating energy storage system connected to the surface hot seawater tank, a flash chamber connected to the solar heating energy storage system, a generator set connected to the flash chamber, and a condensing chamber connected to the steam outlet of the generator set. The seabed mining vehicle is used to collect seabed minerals; The separation system is connected to the seabed mining vehicle and the power generation system respectively, and is used to receive a mixture of ore and tailings cold seawater collected by the seabed mining vehicle, and then separate the ore and tailings cold seawater in the mixture; the tailings cold seawater flowing out of the separation system flows into the power generation system as a coolant for temperature difference energy power generation; The separation system (2) comprises a mineral processing separation system (22) and a tailings cold seawater tank (23), wherein the mineral processing separation system comprises a tank body, the tank body is connected to an ore inlet pipe; a water outlet for discharging the tailings cold seawater is provided at the bottom of the tank body, and an ore outlet for discharging ore is provided at a position near the water outlet at the bottom of the tank body; The cabin body comprises a hollow inner wall of the cabin, an outer wall of the cabin is arranged outside the hollow inner wall of the cabin, and a reinforced filling is arranged between the outer wall of the cabin and the hollow inner wall of the cabin; The ore inlet pipe comprises an ore inlet hard pipe and an ore inlet soft pipe which are connected in sequence, wherein the ore inlet hard pipe extends out of the cabin body, and the ore inlet soft pipe is placed inside the cabin body; the ore inlet soft pipe (222) buffers the incoming ore mixture so that the ore mixture falls along the hollow inner wall (224) of the cabin; the tailing cold seawater finally flows into the tailing cold seawater tank (23) from the water outlet (226) through the hollow inner wall (224) of the cabin, and the tailing cold seawater tank (23) is connected to the condensation chamber (17) by a water pump (5).

2. The deep sea mining energy recovery system combined with temperature difference energy generation according to claim 1, characterized in that: The power generation system comprises a power storage tank connected to the generator set; a fresh water tank connected to the condensate outlet of the condensate chamber; and a sedimentation tank connected to the seawater outlet of the condensate chamber.

3. The deep sea mining energy recovery system combined with temperature difference energy generation according to claim 1 is characterized in that: The power generation system includes a surface thermal seawater tank, a solar energy heating energy storage system connected to the surface thermal seawater tank, a flash chamber connected to the solar energy heating energy storage system, a working fluid evaporation tank connected to the flash chamber, a generator set connected to the working fluid evaporation tank, a condensation chamber connected to the working fluid evaporation tank and the generator set respectively, an electricity storage tank connected to the generator set, a fresh water tank connected to the condensed water outlet of the working fluid evaporation tank, and a sedimentation tank connected to the seawater outlet of the condensation chamber; wherein the inlet of the working fluid evaporation tank is connected to the outlet of the condensed working fluid of the condensation chamber, and the water vapor outlet of the generator set is connected to the water vapor inlet of the condensation chamber.

4. The deep sea mining energy recovery system combined with temperature difference energy generation according to claim 2 or 3, characterized in that: The solar heating energy storage system comprises a support frame, which comprises several layers of storage plates, each layer of the storage plates is provided with a solar heat collecting tube, and adjacent solar heat collecting tubes are connected by U-shaped connecting tubes; the support frame is surrounded by a focusing cover.

5. The deep sea mining energy recovery system combined with temperature difference energy generation according to claim 3 is characterized in that: The working fluid evaporation cabin comprises an outer wall of the cabin, on which a hot water vapor inlet, a fresh water outlet, a hot working fluid gas outlet, a working fluid liquid inlet and a working fluid liquid replenishing port are respectively provided, a working fluid chamber is provided inside the outer wall of the cabin, a heat conduction pipe is provided in the working fluid chamber, one end of the heat conduction pipe extending out of the outer wall of the cabin is the hot water vapor inlet, and the other end of the heat conduction pipe extending out of the outer wall of the cabin is the hot water vapor inlet.

6. The deep sea mining energy recovery system combined with temperature difference energy generation according to claim 5 is characterized in that: The working fluid evaporation chamber also includes a plurality of sealing rings, which are respectively installed on the hot water steam inlet, the fresh water outlet, the hot working fluid gas outlet, the working fluid liquid inlet and the working fluid liquid replenishing port.

7. The deep sea mining energy recovery system combined with temperature difference energy generation according to claim 2 or 3, characterized in that: The separation system comprises a mixing tank, a tailings cold seawater tank and an ore storage tank respectively connected to the mixing tank; wherein the tailings cold seawater tank is connected to a power generation system to provide the power generation system with coolant for condensing water vapor.

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