Wind energy and solar energy utilization device in use process of lithium ion sieve

Abstract

The invention relates to the technical field of lithium extraction, in particular to a device for utilizing wind energy and solar energy in the using process of a lithium ion sieve, which comprises a water storage tank and a lithium ion sieve adsorption facility, the altitude of the water storage tank is higher than that of a water taking point, the water storage tank is connected with the water taking point through a first pipeline, and the water storage tank is connected with the lithium ion sieve adsorption facility through a second pipeline; and the first driving pump is arranged on the first pipeline. The transmission device can be driven through the windmill, then the first driving pump is driven, and brine located in the ground is conveyed to the water storage tank through wind energy. Even if the wind energy has unstable characteristics, the brine can be conveyed as long as the wind energy acts on the windmill. The solar heat collection device can utilize solar energy to heat brine in the water storage tank, and even if the solar energy has the unstable characteristic, the brine can be heated as long as the solar energy exists. Wind energy and solar energy do not need to be converted into electric energy, and loss in the energy conversion process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of lithium extraction, and in particular to a device for utilizing wind energy and solar energy during the use of a lithium ion screen. Background Art

[0002] Lithium is an indispensable raw material to support the development of the new energy vehicle industry. In 2025, the global annual demand will reach 1.3 million tons (equivalent to lithium carbonate equivalent), and China's demand alone will reach 782,000 tons; my country's lithium resource reserves are 16.467 million tons, of which more than 70% are salt lake lithium resources.

[0003] Although lithium-containing salt lakes are often located in high-altitude areas with rich wind and solar energy resources, the wind and solar energy themselves are not stable enough, so using them for power generation requires the construction of large-scale energy storage facilities, which is costly. In addition, the night temperature in high-altitude areas is low. For example, in areas with rich lithium salt lake resources, the night temperature in winter can reach -40°C. The energy stored in energy storage facilities is often not enough to maintain the insulation requirements for normal operation. The cost of power generation by transporting diesel and natural gas is high, and its power generation cannot meet the needs of large-scale industrial production. Summary of the invention

[0004] In view of this, the present invention provides a wind energy and solar energy utilization device during the use of a lithium ion sieve to solve the problem of high wind energy and solar energy utilization costs caused by unstable wind energy and solar energy during the use of a lithium ion sieve.

[0005] The present invention provides a device for utilizing wind energy and solar energy during the use of a lithium ion screen, comprising:

[0006] A water storage tank is located at an altitude higher than the water intake point and the lithium ion sieve adsorption facility, the water storage tank and the water intake point are connected via a first pipeline, and the water storage tank and the lithium ion sieve adsorption facility are connected via a second pipeline;

[0007] A first driving pump, arranged on the first pipeline;

[0008] A windmill, wherein the windmill drives the first driving pump through a transmission device, so that the brine at the water intake point is transported to the water storage tank along the first pipeline;

[0009] A solar thermal collector is suitable for heating brine in a storage tank.

[0010] The present application can drive the transmission device through the windmill, and then drive the first drive pump, and use wind energy to transport the brine in the ground to the water storage tank. Even if wind energy has unstable characteristics, as long as there is wind energy acting on the windmill, the brine can be transported. The solar thermal collector can use solar energy to heat the brine in the water storage tank. Even if solar energy has unstable characteristics, as long as there is solar energy, the brine can be heated. The present application does not need to convert wind energy and solar energy into electrical energy, which reduces the loss in the energy conversion process and gets rid of the influence of the instability of wind energy and solar energy on the lithium extraction process. The water storage tank is higher than the lithium ion sieve adsorption facility, and the brine in the water storage tank can be transported to the lithium ion sieve adsorption facility by power.

[0011] In an optional embodiment, the first driving pump is a diaphragm pump. The diaphragm pump has strong adaptability and can work in various environments without being greatly affected by environmental factors.

[0012] In an optional embodiment, the windmill and the first driving pump are both located between the water storage tank and the water intake point.

[0013] In an optional embodiment, the water storage tank is made of a material resistant to salt water corrosion.

[0014] In an optional embodiment, a clutch device is provided between the transmission device and the windmill. When the water storage tank is full of brine, the power linkage between the transmission device and the windmill can be suspended through the clutch device.

[0015] In an optional embodiment, a second driving pump is provided on the second pipeline, and a flow limiting valve is provided on the second pipeline to adjust the flow rate of water from the water storage tank into the lithium ion sieve adsorption facility. The brine in the water storage tank can be pumped into the lithium ion sieve adsorption facility by the second driving pump, which can greatly reduce the energy consumption of the second driving pump compared to pumping brine into the lithium ion sieve adsorption facility from a water intake point at a lower altitude.

[0016] In an optional embodiment, the solar thermal collector comprises:

[0017] The heat exchange coil is arranged inside the water storage tank;

[0018] A heat collector connected to the heat exchange coil;

[0019] The heat exchange coil and the heat collector contain circulating fluid, and the heat collector and the heat exchange coil form a circulation passage.

[0020] The collector can absorb solar energy and heat the brine in the water tank. There is no energy type conversion, which is equivalent to directly using solar energy to heat the brine in the water tank.

[0021] In an optional embodiment, a temperature sensor is provided in the water storage tank, which is suitable for detecting the temperature of the brine in the water storage tank.

[0022] In an optional embodiment, a regulating valve is provided in the collector, which is suitable for adjusting the flow rate of the circulating liquid in the circulation passage.

[0023] In an optional embodiment, a circulation pump is provided between the heat exchange coil and the collector. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Water storage tank; 2. Water intake point; 3. Lithium ion screen adsorption facility; 4. First pipeline; 5. Second pipeline; 6. Windmill. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0029] Combine the following Figure 1 , describing an embodiment of the present invention.

[0030] According to an embodiment of the present invention, a device for utilizing wind energy and solar energy during the use of a lithium ion screen is provided, which can be arranged in a high altitude area, comprising:

[0031] The water tank 1 is located at an altitude higher than the water intake point 2 and the lithium ion sieve adsorption facility 3. The water tank 1 and the water intake point 2 are connected by a first pipeline 4, and the water tank 1 and the lithium ion sieve adsorption facility 3 are connected by a second pipeline 5. There can be multiple water tanks 1, and the capacity of the water tank 1 can be designed according to demand. In actual layout, several large-capacity water tanks 1 are built at a location slightly higher than the lithium ion sieve adsorption facility 3. If the terrain is relatively flat, consider raising the ground level to build the corresponding water tank 1, but pay attention to the corresponding load-bearing problem when the water tank 1 is full. An adsorption device is provided in the lithium ion sieve adsorption facility 3, and the adsorption device has a lithium ion sieve adsorbent.

[0032] A first driving pump, arranged on the first pipeline 4;

[0033] The windmill 6 drives the first driving pump through the transmission device, so that the brine from the water intake point 2 is transported to the water storage tank 1 along the first pipeline 4; if the first driving pump is a rotary pump, the transmission device may include a driving gear fixedly arranged on the main shaft of the windmill 6, and the driven gear on the rotating shaft of the first driving pump meshed with the gear group can be driven by the gear group meshed with the driving gear, so that the windmill 6 drives the first driving pump using the mechanical energy generated by wind energy. It should be noted that the gear group, the driving gear and the driven gear can be replaced by a sprocket group.

[0034] The solar thermal collector is suitable for heating the brine in the water storage tank 1.

[0035] The present application can drive the transmission device through the windmill 6, and then drive the first drive pump, and use wind energy to transport the brine in the ground to the water storage tank 1. Even if the wind energy has unstable characteristics, as long as there is wind energy acting on the windmill 6, the brine can be transported. The solar thermal collector can use solar energy to heat the brine in the water storage tank 1. Even if the solar energy has unstable characteristics, as long as there is solar energy, the brine can be heated. The present application does not need to convert wind energy and solar energy into electrical energy, which reduces the loss in the energy conversion process and gets rid of the influence of the instability of wind energy and solar energy on the lithium extraction process. The water storage tank 1 is higher than the lithium ion sieve adsorption facility 3, and the brine in the water storage tank 1 can be transported to the lithium ion sieve adsorption facility 3 by power.

[0036] In an optional embodiment, the first drive pump is a diaphragm pump. The diaphragm pump is highly adaptable and can work in various environments without being greatly affected by environmental factors. The diaphragm pump generally requires a linear drive, and the transmission device may include a driving gear fixedly arranged on the main shaft of the windmill 6, which can drive a driven gear on the rotating shaft of the first drive pump meshed with the gear set through a gear set meshed with the driving gear, so that the windmill 6 uses the mechanical energy generated by wind energy to drive the first drive pump. It should be noted that the gear set, the driving gear and the driven gear can be replaced by a sprocket set. The driven gear can be connected to the crank in the crank-connecting rod mechanism, and the connecting rod is used to drive the diaphragm pump.

[0037] In an optional embodiment, the windmill 6 and the first driving pump are both located between the water storage tank 1 and the water intake point 2. A number of windmills 6 can be built at suitable locations between the water storage tank 1 and the salt lake water intake point 2. Each windmill 6 directly drives a diaphragm pump through a transmission device to pump the salt lake brine from the water intake point 2 into the water storage tank 1. Since the kinetic energy of the windmill 6 does not need to be converted into electrical energy but is directly driven, a large amount of energy conversion losses are reduced.

[0038] In an optional embodiment, the water storage tank 1 is made of a salt water corrosion resistant material to prevent corrosion by brine, and the water storage tank 1 should be well insulated.

[0039] In an optional embodiment, a clutch device is provided between the transmission device and the windmill 6. When the water storage tank 1 is full of brine, the power linkage between the transmission device and the windmill 6 can be suspended through the clutch device. When the lithium ion sieve adsorption facility 3 is in operation, as long as there is water in the water storage tank 1, the water in the water storage tank 1 is used first. Since the water storage tank 1 is at a higher altitude than the adsorption device, pumping the water in the water storage tank 1 into the lithium ion sieve adsorption facility 3 can significantly reduce the energy consumption of the water pump compared to pumping water from the water intake point 2 at a lower altitude into the lithium ion sieve adsorption facility 3.

[0040] In an optional embodiment, a second driving pump is provided on the second pipeline 5, and a flow limiting valve is provided on the second pipeline 5 to adjust the flow rate of water from the water storage tank 1 into the adsorption device in the lithium ion sieve adsorption facility 3. The second driving pump can be driven by a windmill 6 and a transmission device, or by electricity. The brine in the water storage tank 1 can be pumped into the adsorption device through the second driving pump, which can greatly reduce the energy consumption of the second driving pump compared to pumping the brine into the adsorption device from the water intake point 2 at a lower altitude.

[0041] In an optional embodiment, the solar thermal collector comprises:

[0042] The heat exchange coil is arranged inside the water storage tank 1;

[0043] A heat collector connected to the heat exchange coil;

[0044] The heat exchange coil and the heat collector contain circulating fluid, and the heat collector and the heat exchange coil form a circulation passage.

[0045] The collector can absorb solar energy and heat the brine in the water storage tank 1 without any energy type conversion, which is equivalent to directly using solar energy to heat the brine in the water storage tank 1.

[0046] Find a suitable site near the water tank 1 to build a solar thermal collection device, determine the scale of the solar thermal collection device based on actual site limitations and the size of the water tank 1 storage capacity, and distribute the heat exchange coils of the solar thermal collection device to each water tank 1 according to actual conditions.

[0047] In an optional embodiment, a temperature sensor is provided in the water storage tank 1 , which is suitable for detecting the temperature of the brine in the water storage tank 1 .

[0048] In an optional embodiment, a regulating valve is provided in the collector, which is suitable for adjusting the flow rate of the circulating liquid in the circulation path. The solar thermal collector can directly use the heat energy to heat the brine in the water storage tank 1. With the insulation design of the water storage tank 1, the temperature of the brine can be raised by 10°C-20°C ideally. Whether for manganese, titanium, manganese-titanium lithium ion sieve adsorbents, or even aluminum molecular sieve adsorbents, higher water temperature helps to improve the lithium recovery rate.

[0049] In an optional embodiment, a circulation pump is provided between the heat exchange coil and the collector.

[0050] It may also include a controller, the temperature sensor, regulating valve and circulating pump are respectively connected to the controller, and the controller is suitable for controlling the regulating valve and circulating pump respectively based on the monitoring data of the temperature sensor, so that the brine in the water storage tank 1 is heated by 10℃-20℃.

[0051] This application directly uses the kinetic energy of wind and the thermal energy of the sun, without the need for energy storage and conversion. The system construction and maintenance costs are very low. In addition, as a supplement to the conventional lithium ion sieve adsorption and lithium extraction system, the system will not have any negative impact on the main process regardless of whether the wind energy is unstable or the solar energy is unstable, but will only play a role in gain.

[0052] Beneficial effects:

[0053] 1. This application directly uses the kinetic energy of wind and the thermal energy of the sun, without the need for energy storage and conversion, and the system construction and maintenance costs are very low.

[0054] 2. This application directly uses the kinetic energy of wind and the thermal energy of the sun, without any loss in energy conversion, and the efficiency of natural energy utilization is extremely high.

[0055] 3. This application is a supplement to the main process, and the instability of solar energy and wind energy will not cause any negative impact.

[0056] 4. Once the solar energy and wind energy are abundant, this application can greatly help the main process, either greatly improve the lithium recovery rate of the system, or greatly reduce the energy loss used for pumping water, or both. The areas with abundant salt lake lithium resources to which this application is applicable happen to be areas with a shortage of electricity, abundant wind energy and solar energy, and low temperatures at night make energy storage difficult, making it difficult to apply solar and wind power generation on a large scale. Therefore, the present invention greatly improves the economic efficiency of lithium extraction by salt lake adsorption, and even makes the large-scale adsorption method of lithium extraction that was originally impossible to achieve feasible.

[0057] Comparative Example 1:

[0058] A salt lake's lithium-containing brine currently uses aluminum-based adsorbents to extract lithium, and the brine temperature needs to be raised to 40°C during adsorption.

[0059] Power loss for lithium extraction per ton of battery-grade lithium carbonate:

[0060]

[0061] Embodiment 1:

[0062] After using the present invention to collect heat from wind and solar energy, the lithium-containing brine in Salt Lake A is adsorbed by an aluminum-based adsorbent to extract lithium. Under the same natural conditions as those in Comparative Example 1, such as brine composition, water temperature and air temperature, the power loss for extracting lithium per ton of battery-grade lithium carbonate is:

[0063]

[0064] By comparison, it can be seen that after adopting the present invention to utilize wind energy and solar energy for heat collection, the power loss is significantly reduced, the cost of lithium extraction can be greatly saved, and wind energy and solar energy can be reasonably utilized.

[0065] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A device for utilizing wind energy and solar energy during the use of a lithium ion screen, characterized in that: include: A water storage tank (1) is located at an altitude higher than a water intake point (2) and a lithium ion sieve adsorption facility (3), wherein the water storage tank (1) and the water intake point (2) are connected via a first pipeline (4), and the water storage tank (1) and the lithium ion sieve adsorption facility (3) are connected via a second pipeline (5); a first driving pump, arranged on the first pipeline (4); A windmill (6), wherein the windmill (6) drives the first driving pump through a transmission device, so that the brine from the water intake point (2) is transported to the water storage tank (1) along the first pipeline (4); A solar heat collection device is suitable for heating brine in a water storage tank (1).

2. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 1, characterized in that: The first driving pump is a diaphragm pump.

3. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 2, characterized in that: The windmill (6) and the first driving pump are both located between the water storage tank (1) and the water intake point (2).

4. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 1, characterized in that: The water storage tank (1) is made of a material resistant to salt water corrosion.

5. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 1, characterized in that: A clutch device is provided between the transmission device and the windmill (6).

6. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 1, characterized in that: The second pipeline (5) is provided with a second driving pump, and the second pipeline (5) is also provided with a flow limiting valve to adjust the flow rate of water entering the lithium ion sieve adsorption facility (3) from the water storage tank (1).

7. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 1, characterized in that: The solar thermal collector comprises: A heat exchange coil is arranged inside the water storage tank (1); A heat collector connected to the heat exchange coil; The heat exchange coil and the heat collector contain circulating fluid, and the heat collector and the heat exchange coil form a circulation passage.

8. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 7, characterized in that: The water storage tank (1) is provided with a temperature sensor suitable for detecting the temperature of the brine in the water storage tank (1).

9. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 7, characterized in that: The collector is provided with a regulating valve, which is suitable for regulating the flow rate of the circulating liquid in the circulation passage.

10. The device for utilizing wind energy and solar energy during the use of the lithium ion sieve according to claim 7, characterized in that: A circulation pump is arranged between the heat exchange coil and the heat collector.

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