JP2021195585A - Lithium recovery system and construction method of lithium recovery system - Google Patents

Abstract

To provide a lithium recovery system capable of effectively utilizing separated water separated from fossil fuel, and a construction method of a lithium recovery system.SOLUTION: In a lithium recovery system 100, a separation unit 20 separates a raw material recovered from the ground into fossil fuel and separated water. Therefore, the separation unit 20 can recover the fossil fuel in a state where the separated water has been removed from a fluid recovered from the ground. On the other hand, a lithium recovery unit 30 recovers lithium from the separated water separated by the separation unit 20. As a result, the lithium recovery unit 30 can recover lithium, which is a substance having a wide range of industrial use and high value, before discarding the separated water.SELECTED DRAWING: Figure 1

Description

The present invention relates to a lithium recovery system that recovers lithium from separated water, and a method for constructing the lithium recovery system.

Conventionally, as shown in Patent Document 1, fossil fuel recovery is provided with a pumping portion that pumps fluid from the ground, a separation unit that separates the fluid into fossil fuel and separated water, and a water disposal unit that discards the separated water. The system is known.

Japanese Unexamined Patent Publication No. 2018-43221

Here, in the above-mentioned fossil fuel recovery system, fossil fuel can be obtained by separation at the separation portion. Then, the separated water separated from the fossil fuel is discarded at the water disposal department. At this time, the separated water was discarded at the Water Disposal Department without being effectively utilized. In response to this situation, it was required to effectively utilize the separated water separated from fossil fuels.

An object of the present invention is to provide a lithium recovery system capable of effectively utilizing separated water separated from fossil fuel, and a method for constructing the lithium recovery system.

In order to solve the above problems, the lithium recovery system according to the present invention has a separation part that separates the raw material recovered from the ground into fossil fuel and separated water, and lithium that recovers lithium from the separated water separated by the separation part. It is equipped with a collection unit.

In the lithium recovery system, the separation unit separates the raw material recovered from the ground into fossil fuel and separated water. Therefore, the separation unit can recover the fossil fuel in a state where the separated water is removed from the fluid recovered from the ground. On the other hand, the lithium recovery unit recovers lithium from the separated water separated by the separation unit. As a result, the lithium recovery unit can recover lithium, which is a highly valuable substance with a wide range of industrial use, before the separated water is discarded. From the above, the separated water separated from the fossil fuel can be effectively utilized.

The fluid transport system in the system may use the pressure of the raw material ejected from the ground to transport the separated water to the lithium recovery unit. As a result, the pumping unit such as a pump can be omitted from the transport system, or the energy of the pumping unit can be reduced.

The lithium recovery unit may include an accommodating unit for accommodating an adsorbent that adsorbs lithium, and a concentrating unit that supplies a desorbing liquid that desorbs lithium from the adsorbent to the accommodating unit and acquires a concentrated liquid containing lithium. .. In this case, the enrichment unit can regenerate the adsorbent on the spot in the system. In this case, the lithium recovery unit can recover lithium from the separated water again with the adsorbent after regeneration. Therefore, it is possible to save the trouble of exchanging the adsorbent.

The transport system that transports the fluid in the system may have a pumping unit that pumps the separated water to a water disposal unit for discarding the separated water after lithium is recovered by the lithium recovery unit. In this case, the transport system can divert the pressure of the pumping section to transport the separated water to the lithium recovery section.

The transport system that transports the fluid in the system may have a height difference forming part that forms a height difference so that the lithium recovery part is located at a lower position than the separation part. In this case, the transport system can divert the force of gravity to transport the separated water to the lithium recovery unit.

The method of constructing the lithium recovery system is a fossil fuel recovery system that includes a pumping top that pumps raw materials from the ground, a separation unit that separates the raw materials into fossil fuel and separated water, and a water disposal unit that disposes of the separated water. On the other hand, a lithium recovery system is constructed by adding a lithium recovery section that recovers lithium from the separated water between the separation section and the water disposal section.

According to this method for constructing a lithium recovery system, it is possible to easily construct a lithium recovery system using an existing fossil fuel recovery system. In the lithium recovery system constructed in this way, the separated water separated from the fossil fuel can be effectively utilized.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a lithium recovery system capable of effectively utilizing the separated water separated from fossil fuel, and a method for constructing the lithium recovery system.

It is a schematic block diagram which shows the structure of the lithium recovery system which concerns on embodiment of this invention. It is a schematic block diagram which shows the structure of a lithium recovery part and its surroundings. It is a process drawing which shows the procedure of lithium recovery. It is a schematic block diagram which shows the structure of the lithium recovery system which concerns on the modification. It is a schematic block diagram which shows the structure of the lithium recovery system which concerns on the modification. It is a schematic block diagram which shows the structure of the lithium recovery system which concerns on the modification. It is a schematic block diagram which shows the structure of the lithium recovery system which concerns on the modification. It is a schematic block diagram which shows the structure of the lithium recovery system which concerns on the modification. It is a schematic block diagram which shows the structure of the lithium recovery system which concerns on the modification. It is a schematic block diagram which shows the structure of the lithium recovery system which concerns on the modification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding parts will be designated by the same reference numerals, and duplicate description will be omitted.

FIG. 1 is a schematic configuration diagram showing a configuration of a lithium recovery system 100 according to an embodiment of the present invention. The lithium recovery system 100 also functions as a fossil fuel recovery system 150 for recovering fossil fuels at the same time. In the present embodiment, it is assumed that the lithium recovery system 100 is provided on the ground of the oil field 110. The place where the lithium recovery system is installed is not limited to the oil field, and may be installed anywhere as long as the fossil fuel can be recovered from the ground. It may be provided in. Further, the lithium recovery system may be provided not only in the oil and gas fields on land but also in the oil and gas fields on the seabed.

As shown in FIG. 1, the lithium recovery system 100 includes a pumping top 10, a separation section 20, a lithium recovery section 30, a pumping section 40, and a water disposal section 50.

The pumping upper portion 10 is a portion for pumping raw materials from the ground. The raw material is a fluid containing at least fossil fuel and is a fluid existing in the oil layer 120 formed in the ground of the oil field 110. In this embodiment, the raw materials include oil, gas, and water. Water is the adjoint water that accompanies fossil fuels. The pumping upper portion 10 is composed of a line L1 and a production well 11. Line L1 is a flow path extending from the ground toward the ground and reaching the oil layer 120. The production well 11 is a well that pumps raw materials from the oil reservoir 120 via the line L1. The production well 11 supplies the pumped raw material to the separation unit 20 via the line L2.

The separation unit 20 separates the raw material into fossil fuel and separated water. The separation unit 20 is composed of a separator that separates gas, oil, and water. Such a separator stores the raw material pumped by the pumping upper portion 10 in the internal space, and separates gas, oil, and water having different specific densities by the action of gravity. In the following description, the water separated from the fossil fuels of gas and oil by the separation unit 20 will be referred to as separated water. The separation unit 20 supplies gas to a tank or the like (not shown) via the line L3. The separation unit 20 supplies oil to a tank or the like (not shown) via the line L4. The separation unit 20 supplies the separation water to the lithium recovery unit 30 via the line L6.

The lithium recovery unit 30 recovers lithium from the separated water separated by the separation unit 20. The lithium recovery unit 30 recovers lithium from the separated water supplied via the line L6. Further, the lithium recovery unit 30 supplies the separated water after recovering lithium to the water disposal unit 50 via the line L7.

Here, with reference to FIG. 2, the lithium recovery unit 30 and the peripheral structure of the lithium recovery unit 30 will be described in detail. FIG. 2 is a schematic configuration diagram showing the configuration of the lithium recovery unit 30 and its surroundings. As shown in FIG. 2, the lithium recovery unit 30 includes a column 31 (accommodation unit) and a concentration unit 70.

The column 31 is a container that houses the adsorbent 32 that adsorbs lithium. The column 31 is a cylindrical member extending in the longitudinal direction. A line L6 from the separating portion 20 is connected to one end side in the longitudinal direction of the column 31, and a line L7 extending to the water disposal portion 50 is connected to the other end side in the longitudinal direction of the column 31. The column 31 is filled with an adsorbent 32 that adsorbs lithium. In the internal space of the column 31, silica beads 34 are filled on both ends in the longitudinal direction. The region filled with the silica beads 34 and the region filled with the adsorbent 32 are separated by a mesh member 33.

The concentrating unit 70 supplies the desorption liquid for desorbing lithium from the adsorbent 32 to the column 31, and obtains the concentrating liquid containing lithium. Specifically, the concentration unit 70 includes a desorption liquid supply unit 71 that supplies the desorption liquid to the column 31 via the line L10, and a concentrate collection unit 72 that collects the concentrate that has passed through the column 31 via the line L11. , Equipped with. As the desorption liquid, hydrochloric acid, sulfuric acid, nitric acid or the like may be adopted. The desorbing liquid may be appropriately changed depending on the material of the adsorbent and the like.

In the present embodiment, as the adsorbent 32, a spinel-type manganese oxide having selective adsorption property for lithium ions is adopted. The accompanying water of the oil layer 120 contains not only lithium but also many other substances, but the spinel-type manganese oxide ^{selectively adsorbs only Li +,} that is, it has a so-called selective adsorption property. Enables adsorption and recovery of lithium. The process of adsorption / desorption of lithium by manganese oxide is represented by the following equations (1) and (2).

H _1.6 Mn _1.6 O ₄ (adsorbent) + Li ⁺ (separated water) → Li _1.6 Mn _1.6 O ₄ (adsorbent) + H ⁺ (separated water)… (1)

Li _1.6 Mn _1.6 O ₄ (adsorbent) + H ⁺ (desorption liquid) → H _1.6 Mn _1.6 O ₄ (adsorbent) + Li ⁺ (separated water)… (2)

As described above, _{H 1.6} Mn _1.6 O ₄ (adsorbent) produced by acid treatment of _{Li 1.6} Mn _1.6 O ₄ is brought into contact with the separated water to form the formula (1). The reaction proceeds, and Li ⁺ in the separated water is selectively adsorbed on the adsorbent 32. Then, when the reaction of the formula (2) is allowed to proceed with an appropriate amount of acid, lithium is desorbed from the adsorbent 32 to obtain a concentrated liquid in which ^{Li + is concentrated.} By alternately proceeding the reactions of the formulas (1) and (2), the recovery of lithium and the regeneration of the adsorbent can be repeated in one column 31. For example, a control unit (not shown) opens the valves (not shown) of the lines L6 and L7 and closes the valves (not shown) of the lines L10 and L11 of the enrichment unit 70 at the time of lithium recovery. As a result, the adsorbent 32 adsorbs lithium. The control unit closes the valves of the lines L6 and L7 when it detects that the adsorption capacity of the adsorbent 32 has decreased, flows a predetermined flow rate of separated water, or when a predetermined time has elapsed. Open the valves of lines L10 and L11. As a result, lithium is desorbed from the adsorbent 32 to obtain a concentrated liquid. The control unit detects that the lithium adsorbed on the adsorbent 32 has disappeared, and opens the valves of the lines L6 and L7 again when a predetermined desorbing liquid is poured or when a predetermined time has elapsed. Close the valves on the lines L10 and L11. As a result, lithium is adsorbed again by the adsorbent 32. Although the control unit automatically performs the above-mentioned operation, the operator may manually perform the operation.

In this embodiment, a spinel-type manganese oxide was adopted as the adsorbent 32. However, the material of the adsorbent 32 is not particularly limited, and other materials may be adopted as long as lithium can be recovered. For example, as the material of the adsorbent 32, nickel, cobalt, manganese ternary oxide, alumina-based adsorbent, or the like may be adopted. Further, the lithium recovery method of the lithium recovery unit 30 is not necessarily limited to the method using the adsorbent 32, and other methods such as solvent extraction and an alumina-based adsorbent may also be used.

Returning to FIG. 1, the pumping unit 40 pumps the separated water to the water disposal unit 50 for discarding the separated water after the lithium is recovered by the lithium recovery unit 30. In the present embodiment, the pumping unit 40 is provided on the line L7 between the lithium recovery unit 30 and the water disposal unit 50. The pumping unit 40 is configured by a pump or the like.

The water disposal unit 50 discards the separated water after the lithium is recovered by the lithium recovery unit 30. The water disposal unit 50 is composed of a water disposal well 51 and a line L8. The water waste well 51 is a well that discharges the separated water after lithium recovery supplied via the line L7. The line L8 extends downward from the water waste well 51 on the ground toward the ground. As a result, the water disposal unit 50 disposes of the separated water after lithium recovery into the ground via the line L8.

The transport system 60 is a system for transporting a fluid (raw material and separated water) in the lithium recovery system 100. The transportation system 60 includes lines L1, L2, L6, L7, and L8. Further, the transportation system 60 includes a production well 11, a separation unit 20, a lithium recovery unit 30, a pumping unit 40, and a flow path and an internal space in the water waste well 51.

The transport system 60 uses the pressure of the raw material ejected from the ground to transport the separated water to the lithium recovery unit 30. That is, since the raw material in the oil layer 120 exists in a high pressure state, the raw material can be recovered in such a manner that the line L1 is ascended and injected (self-injected) on the ground. Therefore, in the transport system 60, the raw material behaves as if it naturally and constantly flows due to the influence of the pressure due to the injection. The transport system 60 can effectively utilize such a flow to transport the separated water to the lithium recovery unit 30. Specifically, the transportation system 60 is configured so as not to release the pressure of the raw material between the oil layer 120 and the lithium recovery unit 30 as much as possible. That is, the transport system 60 does not have a place where the fluid is released to the atmosphere between the oil layer 120 and the lithium recovery unit 30. The separator constituting the separation unit 20 is a container whose airtightness and watertightness are ensured so that gas or liquid does not leak to the outside, and a valve is also provided for a pipe or the like connected to the outside. Therefore, since the separator of the separation unit 20 is configured so that the pressure ejected from the oil layer 120 does not naturally escape, the separation water can be supplied to the downstream side by utilizing the pressure of the raw material ejected from the ground. Corresponds to the configuration.

Next, a method for constructing the lithium recovery system 100 as described above will be described. The above-mentioned lithium recovery system 100 can be constructed by adding the lithium recovery unit 30 to the existing fossil fuel recovery system. That is, as an existing fossil fuel recovery system, there is a fossil fuel recovery system 150 shown in FIG. 1 excluding the lithium recovery unit 30. A lithium recovery system 100 can be constructed by adding a lithium recovery unit 30 between the separation unit 20 and the water disposal unit 50 to such an existing fossil fuel recovery system. In addition to adding the lithium recovery unit 30 to the existing system in this way, the entire lithium recovery system 100 may be newly constructed.

Next, with reference to FIG. 3, FIG. 3 for explaining the lithium recovery method is a process diagram showing a procedure for lithium recovery. As shown in FIG. 3, the lithium recovery method includes a lithium adsorption step S10, a primary concentration step S20, a secondary concentration step S30, and a purification step S40.

In the lithium adsorption step S10, as shown in FIG. 2, the line L6 supplies the separated water to the lithium recovery unit 30, and the adsorbent 32 adsorbs lithium in the separated water. Next, in the primary concentration step S20, as shown in FIG. 2, the desorption liquid supply unit 71 supplies the desorption liquid such as hydrochloric acid to the lithium recovery unit 30, so that the adsorbent 32 is charged with hydrogen adsorbed by the adsorbent. Detachable. As a result, the concentrated liquid recovery unit 72 collects the concentrated liquid in which lithium is concentrated.

In the secondary concentration step S30, the concentrate recovered by the concentrate collection unit 72 of FIG. 2 is transported to the secondary concentration device, and the secondary concentration of lithium is performed by the secondary concentration device. The secondary concentrator may be provided at a location different from that of the lithium recovery system 100, in which case the concentrator is transported by a transport vehicle or the like. The method of secondary concentration is not particularly limited, and a known method for concentrating lithium may be adopted. For example, the evaporation method may be adopted. The evaporation method is a method of physically concentrating the concentrate by evaporating the water in the concentrate. Moreover, the electrodialysis method may be adopted. The first electrodialysis method is a method of purely concentrating a concentrated solution using electrodialysis, and for example, a lithium chloride concentrated solution is obtained as a product. Alternatively, the second electrodialysis method is a method of separating chlorine by selective concentration in bipolar, and as products, for example, an aqueous solution of lithium hydroxide and hydrogen chloride can be obtained. Further, the ion conductor lithium separation method may be adopted. In this method, hydrogen can also be recovered as a secondary effect.

In the purification step S40, lithium is purified from the concentrate obtained in the secondary concentration step S30. Specifically, when the evaporation method or the first electrodialysis method is adopted in the secondary concentration step S30, lithium carbonate (Li ₂ CO _{3) is added to the concentrate, dried and pulverized.} ) Is purified. When the second electrodialysis method or the ionic conductor lithium separation method is adopted in the secondary concentration step S30, carbon dioxide is blown into the concentrated solution, dried and pulverized to cause lithium carbonate (Li ₂ CO _3). ) Is purified.

Next, the operation / effect of the lithium recovery system 100 according to the present embodiment will be described.

In the lithium recovery system 100, the separation unit 20 separates the raw material recovered from the ground into fossil fuel and separated water. Therefore, the separation unit 20 can recover the fossil fuel in a state where the separated water is removed from the fluid recovered from the ground. On the other hand, the lithium recovery unit 30 recovers lithium from the separated water separated by the separation unit 20. As a result, the lithium recovery unit 30 can recover lithium, which is a substance having a wide range of industrial use and high value, before discarding the separated water. From the above, the separated water separated from the fossil fuel can be effectively utilized.

The fluid transporting system 60 in the system may transport the separated water to the lithium recovery unit 30 by utilizing the pressure of the raw material ejected from the ground. As a result, the energy of the pumping unit 40 can be reduced. Alternatively, the pumping section 40 can be omitted from the transport system 60 (see, for example, FIG. 8). Here, as a comparative structure, for example, a structure in which the transport system 60 stores the separated water in a storage tank completely open to the atmosphere and supplies the separated water stored in the storage tank to the lithium recovery unit 30 is considered. .. When the separated water is stored in such a storage tank, the pressure of the raw material injected from the oil layer 120 is completely released. Therefore, when supplying the separated water from the storage tank to the lithium recovery unit 30, the output of the pumping unit 40 may be set large, or a height difference may be separately provided between the storage tank and the lithium recovery unit 30 to apply the force of gravity. It will be necessary to utilize and supply. It should be noted that the form of using such a storage tank is not excluded from the scope of rights of the present invention.

The lithium recovery unit 30 includes a column 31 containing an adsorbent 32 for adsorbing lithium, a concentrating unit 70 for supplying a desorption liquid for desorbing lithium from the adsorbent 32 to the column 31, and acquiring a concentrated liquid containing lithium. May be equipped. In this case, the concentrator 70 can regenerate the adsorbent 32 on the spot in the system. In this case, the lithium recovery unit 30 can recover lithium from the separated water again with the adsorbent 32 after regeneration. Therefore, it is possible to save time and effort such as replacing the adsorbent 32. However, the concentrating unit 70 may be omitted, and the adsorbent 32 or the column 31 itself may be replaced with a new one when the adsorption of the adsorbent 32 is saturated. In this case, the replaced adsorbent 32 or column 31 may be transported to another treatment plant, where the lithium may be recovered and the adsorbent 32 may be regenerated.

The transport system 60 may have a pumping unit 40 that pumps the separated water to the water disposal unit 50 for discarding the separated water after lithium is recovered by the lithium recovery unit 30. In this case, the transport system 60 can divert the pressure of the pumping section 40 to transport the separated water to the lithium recovery section 30.

The method for constructing the lithium recovery system 100 is an existing method including a pumping upper portion 10 for pumping raw materials from the ground, a separation unit 20 for separating the raw materials into fossil fuel and separated water, and a water disposal unit 50 for discarding the separated water. A lithium recovery system 100 is constructed by adding a lithium recovery section 30 that recovers lithium from the separated water between the separation section 20 and the water disposal section 50 to the fossil fuel recovery system of the above.

According to this method for constructing the lithium recovery system 100, the lithium recovery system 100 can be easily constructed by using the existing fossil fuel recovery system. In the lithium recovery system 100 constructed in this way, the separated water separated from the fossil fuel can be effectively utilized.

The present invention is not limited to the above-described embodiment.

For example, the configuration shown in FIG. 4 may be adopted. In the lithium recovery system 100 shown in FIG. 4, instead of the pumping section 40 being provided on the line L7 between the lithium recovery section 30 and the water disposal section 50 in FIG. 1, the separation section 20 and the lithium recovery section 30 are provided. A pumping unit 40 is provided on the line L6 between the and.

Further, the configuration shown in FIG. 5 may be adopted. In the lithium recovery system 100 shown in FIG. 5, the transport system 60 has a height difference forming portion 65 that forms a height difference so that the lithium recovery portion 30 is arranged at a position lower than that of the separating portion 20. It is different from the lithium recovery system 100 shown in 1. In this case, the transport system 60 can divert the force of gravity to transport the separated water to the lithium recovery unit 30. Therefore, the pumping unit 40 is omitted. Specifically, the water disposal unit 50 is provided in the lowland 111, which is lower than the position where the pumping upper portion 10 is formed in the oil field 110. Therefore, the line L6 extending from the separation portion 20 extends so as to bend downward, and the lithium recovery portion 30 is provided at the bent portion. Then, the line L7 extends downward from the lithium recovery unit 30, bends and extends horizontally, and is connected to the water disposal unit 50.

Further, the configuration shown in FIG. 6 may be adopted. The lithium recovery system 100 shown in FIG. 6 is different from the lithium recovery system 100 shown in FIG. 1 in that the lithium recovery system 100 is provided in the gas field 310 instead of the oil field 110. In the gas field 310, mainly water-soluble gas can be recovered. Therefore, the pumping upper part 210 is composed of only the line L1 and the production well is omitted. Further, the separation unit 220 is composed of a separator that separates the water-soluble gas and the separated water. The line L1 is directly inserted into the separation portion 220. The pumping section 40 is provided on the line L6 between the separating section 220 and the lithium recovery section 30.

Further, the configuration shown in FIG. 7 may be adopted. The lithium recovery system 100 shown in FIG. 7 is different from the lithium recovery system 100 shown in FIG. 6 in that the pumping unit 40 is provided on the line L7 between the lithium recovery unit 30 and the water disposal unit 50. ..

Further, the configuration shown in FIG. 8 may be adopted. The lithium recovery system 100 shown in FIG. 8 is different from the lithium recovery system 100 shown in FIG. 1 in that the pumping unit 40 is omitted from the lines L6 and L7. The transport system 60 of the lithium recovery system 100 shown in FIG. 8 transports the separated water to the lithium recovery unit 30 only by the pressure of the raw material ejected from the ground.

Further, the configuration shown in FIG. 9 may be adopted. The lithium recovery system 100 shown in FIG. 9 is different from the lithium recovery system 100 shown in FIG. 6 in that the pumping unit 40 is omitted from the lines L6 and L7. The transport system 60 of the lithium recovery system 100 shown in FIG. 9 transports the separated water to the lithium recovery unit 30 only by the pressure of the raw material ejected from the ground.

Further, the configuration shown in FIG. 10 may be adopted. In the lithium recovery system 100 shown in FIG. 10, the transport system 60 has a height difference forming unit 65 that forms a height difference so that the lithium recovery unit 30 is arranged at a position lower than the separation unit 20. It is different from the lithium recovery system 100 shown in 1. In this case, the transport system 60 can divert the force of gravity to transport the separated water to the lithium recovery unit 30. Therefore, the pumping unit 40 is omitted. The specific configuration of the height difference forming portion 65 is the same as that in FIG.

10,210 ... Pumping top, 20,220 ... Separation section, 30 ... Lithium recovery section, 31 ... Column (containment section), 32 ... Adsorbent, 40 ... Pumping section, 50 ... Water disposal section, 60 ... Transport system, 65 ... Height difference forming part, 70 ... Concentrating part, 100 ... Lithium recovery system.

Claims (6)

A separation part that separates raw materials recovered from the ground into fossil fuel and separated water,
A lithium recovery system including a lithium recovery unit that recovers lithium from the separated water separated by the separation unit. The lithium recovery system according to claim 1, wherein the transport system for transporting the fluid in the system uses the pressure of the raw material ejected from the ground to transport the separated water to the lithium recovery unit. The lithium recovery unit is
A housing unit that houses the adsorbent that adsorbs lithium,
The lithium recovery system according to claim 1 or 2, further comprising a concentrating unit for supplying a desorbing liquid for desorbing the lithium from the adsorbent to the accommodating unit and acquiring the concentrated liquid containing the lithium. A transportation system for transporting a fluid in a system has a pumping unit for pumping the separated water to a water disposal unit for discarding the separated water after the lithium is recovered by the lithium recovery unit, claim 1 to 1. The lithium recovery system according to any one of 3. Any one of claims 1 to 4, wherein the transport system for transporting the fluid in the system has a height difference forming portion that forms a height difference so that the lithium recovery portion is arranged at a position lower than the separation portion. Lithium recovery system as described in section. The pumping top that pumps raw materials from the ground,
A separation part that separates the raw material into fossil fuel and separated water,
For a fossil fuel recovery system including a water disposal unit that disposes of the separated water.
A method for constructing a lithium recovery system, which constructs a lithium recovery system by adding a lithium recovery section for recovering lithium from the separated water between the separation section and the water disposal section.

Images