Salt lake lithium extraction adsorbent scrubbing system

Abstract

The utility model discloses a salt lake lithium extraction adsorbent scrubbing system which comprises a scrubbing tower and an adsorption tower, and a sunken water distributor is arranged at the bottom end in the scrubbing tower; the middle position of the bottom of the concave water distributor penetrates through the bottom of the scrubbing tower and is connected with a runner opening; a water replenishing opening is formed in the middle of the bottom of the scrubbing tower; two feed ports are formed in the positions, close to the water inlet, of one side of the scrubbing tower, and a water outlet is formed in the position, close to the top, of one side of the scrubbing tower; the flow channel port is sequentially connected with a pneumatic valve j, a diaphragm pump B and an adsorption column through a pipeline; according to the system, crushed resin particles and impurities are effectively removed by cleaning an adsorbent, so that the adsorption performance and the flowability of a resin bed layer are recovered, and it is ensured that the resin bed layer is always in the optimal working state. In the process of scrubbing the adsorbent, the adsorbent does not need to be manually carried except for necessary adsorption tower pipeline connection operation, so that the scrubbing efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of salt lake lithium extraction equipment, in particular to a salt lake lithium extraction adsorbent scrubbing system. Background Art

[0002] Lithium and its compounds play a vital role in human society, are widely used in numerous industries, and have become an indispensable strategic resource for the national economy and national defense. China's proven salt lake lithium reserves account for 80.54% of the world's total. However, their development faces challenges due to the high magnesium-to-lithium ratio and difficulty in separation. Lithium adsorbents, due to their excellent selectivity, relatively high adsorption capacity, low cost, and good stability, are particularly suitable for the development of lithium resources from my country's high-magnesium, low-lithium salt lake brines. Furthermore, my country's salt lake resources are primarily distributed in the ecologically fragile Qinghai-Tibet Plateau. Therefore, the adsorption-based lithium extraction technology using aluminum-based lithium adsorbents meets green production standards, from adsorbent synthesis to brine extraction. In lithium extraction equipment, continuous extraction using lithium adsorbents is a common practice. However, during operation, some impurities may pass through the brine filter into the adsorption tower, contaminating the resin. This not only increases equipment operating pressure but also reduces throughput. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides a salt lake lithium extraction adsorbent scrubbing system, which effectively solves the above technical problems.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions: a salt lake lithium extraction adsorbent scrubbing system, including a scrubbing tower and an adsorption tower, the bottom end of the scrubbing tower is provided with a concave water distributor; the middle position of the bottom of the concave water distributor passes through the bottom of the scrubbing tower and is connected to a flow channel; a water supply port is provided in the middle of the bottom of the scrubbing tower; two feed ports are provided at a position near the water inlet on one side of the scrubbing tower, and a drain port is provided at a position near the top on one side of the scrubbing tower; the flow channel port is connected to a pneumatic valve j, a diaphragm pump B and an adsorption column in sequence by a pipeline; the water supply port is connected to a pneumatic valve i and a pneumatic valve k respectively by a pipeline; one end of the pneumatic valve k is connected to a pressure detector and a pneumatic valve h respectively by a pipeline; the pressure detector One end is connected in sequence with a hand valve, a delivery pump and tail brine by a pipeline; the other end of the pressure detector is connected in sequence with a pneumatic valve h, a pneumatic valve e, a resin column manual valve A and an adsorption tower by a pipeline; there are two feed ports on one side of the scrubbing tower, one feed port is connected in sequence with a pneumatic valve a, a diaphragm pump A, a pneumatic valve f, a resin column manual valve B and an adsorption tower by a pipeline, and the other feed port is connected in sequence with a pneumatic valve b, a pneumatic valve g, a resin column manual valve B and an adsorption tower by a pipeline; an overflow port is provided at the top of the scrubbing tower; a resin column valve a and a resin column valve b are respectively provided on one side of the adsorption tower; one end of the resin column valve a is connected to the system by a pipeline; one end of the resin column valve b is connected to the system and the resin column valve c by pipelines.

[0005] Furthermore, one end of the overflow port extends out of the scrubbing tower and is connected to the first trench; one end of the resin column valve c is connected to the second trench.

[0006] Furthermore, one end of the diaphragm pump A is connected to a pneumatic valve d and a pneumatic valve c in sequence via a pipeline; the pneumatic valve d and the pneumatic valve c are connected to the resin column manual valve A via a pipeline.

[0007] Furthermore, two visual mirrors are respectively provided on the other side of the scrubbing tower; and a pouring port is provided on the top of the scrubbing tower.

[0008] Furthermore, the scrubbing tower has a size of 2200×8180 mm.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] This system cleans the adsorbent, effectively removing broken resin particles and impurities, thereby restoring the adsorption performance and fluidity of the resin bed and ensuring it remains in optimal working condition. During the adsorbent scrubbing process, aside from the necessary connection of the adsorption tower piping, no manual handling of the adsorbent is required, significantly improving scrubbing efficiency. Furthermore, the device is also suitable for filling the adsorbent in the adsorption tower. During the cleaning process, brine tail water from lithium extraction is used, which not only reduces the use of purified water but also prevents over-desorption of the lithium adsorbent. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the system structure of the utility model;

[0012] In the figure: scrubbing tower-1, adsorption tower-2, delivery pump-3, discharge port-4, visual mirror-5, overflow port-6, first trench-7, water distributor-8, flow channel port-9, diaphragm pump A-10, diaphragm pump B-11, pressure detector-12, manual valve-13, pneumatic valve a-14, pneumatic valve b-15, pneumatic valve c-16, pneumatic valve d-17, resin column manual valve A-18, resin column manual valve B-19, resin column valve a-20, resin column valve b-21, resin column valve c-22, second trench-23, pneumatic valve e-24, pneumatic valve f-25, pneumatic valve g-26, pneumatic valve h-27, pneumatic valve i-28, pneumatic valve j-29, pneumatic valve k-30. DETAILED DESCRIPTION

[0013] The following is a clear and complete description of the technical solutions in the embodiments of the present invention with reference to the accompanying drawings:

[0014] like Figure 1As shown, a salt lake lithium extraction adsorbent scrubbing system comprises a scrubbing tower 1 and an adsorption tower 2. The scrubbing tower 1 is replenished with water by the washing water passing through the delivery pump 3, the hand valve 13, the pressure detector 12, the pneumatic valve h27 and the pneumatic valve b15 into the scrubbing tower 1; the bottom end of the scrubbing tower 1 is provided with a concave water distributor 8 so that the adsorbent liquid can flow out smoothly; the middle position of the bottom of the concave water distributor 8 passes through the bottom of the scrubbing tower 1 and is connected to a flow channel 9; a water replenishment port is provided in the middle of the bottom of the scrubbing tower 1; two feed ports are provided on one side of the scrubbing tower 1 near the water inlet, and a drain port is provided on one side of the scrubbing tower 1 near the top; the flow channel 9 is connected by a pipeline according to the embodiment of the present invention. The pneumatic valve j29, diaphragm pump B11 and adsorption column are connected by pipelines; the water supply port is connected to the pneumatic valve i28 and the pneumatic valve k30 respectively by pipelines. If the material is blocked, the flow channel 9 is backwashed by opening the pneumatic valve i28 and using the washing water pump; one end of the pneumatic valve k30 is connected to the pressure detector 12 and the pneumatic valve h27 by pipelines; one end of the pressure detector 12 is connected to the manual valve 13, the delivery pump 3 and the tail brine in sequence by pipelines; the other end of the pressure detector 12 is connected to the pneumatic valve h27, the pneumatic valve e24, the resin column manual valve A18 and the adsorption tower 2 in sequence by pipelines; the two feed ports on one side of the scrubbing tower 1, one feed port The pneumatic valve a14, diaphragm pump A10, pneumatic valve f25, resin column manual valve B19 and adsorption tower 2 are connected in sequence by pipelines, and the other feed port is connected in sequence by pipelines to the pneumatic valve b15, pneumatic valve g26, resin column manual valve B19 and adsorption tower 2; the top of the scrubbing tower 1 is provided with an overflow port 6, and the height of the overflow port 6 can be appropriately adjusted according to the type and density of the resin; a resin column valve a20 and a resin column valve b21 are respectively provided on one side of the adsorption tower 2; one end of the resin column valve a20 is connected to the system by a pipeline; one end of the resin column valve b21 is connected to the system and the resin column valve c22 by a pipeline. Pneumatic valve b15, pneumatic valve c16, pneumatic valve d17, pneumatic valve f25, pneumatic valve g26, pneumatic valve h27, pneumatic valve i28, pneumatic valve j29 and pneumatic valve k30 are valve components of the scrubbing tower equipment, which control the material flow direction through valve switches. The resin column manual valve A18, resin column manual valve B19, resin column valve a20, resin column valve b21 and resin column valve c22 in the figure are all valve continuous separation resin column valve components, which control the material flow direction through valve switches, and the resin column manual valve A18 and resin column manual valve B19 are resin loading and unloading ports, which are used for connection of this device. These valves are controlled by manual hand valves.

[0015] Specifically, one end of the overflow port 6 extends out of the scrubbing tower 1 and is connected to the first trench 7 ; one end of the resin column valve c22 is connected to the second trench 23 .

[0016] Specifically, one end of the diaphragm pump A10 is connected to the pneumatic valve d17 and the pneumatic valve c16 in sequence through pipelines; the pneumatic valve d17 and the pneumatic valve c16 are connected to the resin column manual valve A18 through a pipeline.

[0017] Specifically, two visual mirrors 5 are provided on the other side of the scrubbing tower 1; a pouring port 4 is provided on the top of the scrubbing tower 1, and the adsorbent is poured into the scrubbing tower 1 from the pouring port 4, and is replenished with water through the pneumatic valve k30 using the delivery pump 3, and then delivered to the adsorption column through the pneumatic valve j29 and the diaphragm pump B11.

[0018] Specifically, the scrubbing tower 1 has a size of 2200×8180 mm, and the pipes that intersect with each other in the figure are interconnected.

[0019] Instructions:

[0020] Step 1: water replenishment of scrubbing tower 1 is as follows: the washing water enters scrubbing tower 1 through delivery pump 3, hand valve 13, pressure detector 12, pneumatic valve h27 and pneumatic valve b15;

[0021] Step 2: Adsorbent unloading is as follows: After connecting the adsorbent material pipeline to the resin column manual valve A18 and the resin column manual valve B19 respectively, the wash water enters the adsorption tower 2 through the delivery pump 3, the pneumatic valve g26, and the resin column manual valve B19, and the adsorbent in the adsorption tower 2 is reversed. The adsorbent liquid passes through the resin column manual valve A18 and the pneumatic valve d17 and then the diaphragm pump A10 to transport most of the adsorbent to the scrubbing tower 1. The remaining adsorbent is flushed by changing the wash water inlet to the resin column manual valve A18, and the adsorbent liquid enters the scrubbing tower 1 through the pneumatic valve f25;

[0022] Step 3: Adsorbent scrubbing: Close all outlet valves of the scrubbing tower 1, and allow the washing water to enter the scrubbing tower 1 from the bottom of the scrubbing tower 1. After the washing water flows out from the overflow port 6, change the flow rate of the delivery pump 3 without letting the adsorbent flow out, and rinse the adsorbent to clean the impurities in the adsorbent. The adsorbent scrubbing is completed.

[0023] Step 4: Adsorbent backfilling: Open the pneumatic valve j29 and the liquid flows out from the flow channel 9 through the diaphragm pump B11, then passes through the diaphragm pump B11, passes through the resin column manual valve B19, the pneumatic valve e24 and the resin column manual valve A18 into the adsorption tower 2. The wash water passes through the adsorption tower 2 water distributor and the pneumatic valve h27 and then enters the second ditch 23. The adsorbent is retained in the adsorption tower 2 by the water distributor.

[0024] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention based on the technical solution and its improved conception, which should be covered by the protection scope of the present invention.

Claims

1. A salt lake lithium extraction adsorbent scrubbing system, comprising a scrubbing tower (1) and an adsorption tower (2), characterized in that: The scrubbing tower (1) is provided with a concave water distributor (8) at the bottom end thereof; a flow channel (9) is connected to the bottom of the scrubbing tower (1) at the middle position of the bottom of the concave water distributor (8); a water supply port is provided at the middle position of the bottom of the scrubbing tower (1); two feed ports are provided at a position near the water inlet on one side of the scrubbing tower (1), and a drain port is provided at a position near the top of the scrubbing tower (1); the flow channel port (9) is connected to a pneumatic valve j (29), a diaphragm pump B (11) and an adsorption column in sequence by a pipeline; the water supply port is connected to a pneumatic valve i (28) and a pneumatic valve k (30) respectively by a pipeline; one end of the pneumatic valve k (30) is connected to a pressure detector (12) and a pneumatic valve h (27) respectively by a pipeline; one end of the pressure detector (12) is connected to a hand valve (13), a delivery pump (3) and tail brine in sequence by a pipeline; the other end of the pressure detector (12) is connected to a pneumatic valve (29), a delivery pump (3) and tail brine in sequence by a pipeline. The pipeline sequentially connects the pneumatic valve h (27), the pneumatic valve e (24), the resin column manual valve A (18) and the adsorption tower (2); one of the two feed ports on one side of the scrubbing tower (1) is sequentially connected to the pneumatic valve a (14), the diaphragm pump A (10), the pneumatic valve f (25), the resin column manual valve B (19) and the adsorption tower (2) by a pipeline, and the other feed port is sequentially connected to the pneumatic valve b (15), the pneumatic valve g (26), the resin column manual valve B (19) and the adsorption tower (2) by a pipeline; an overflow port (6) is provided at the top of the scrubbing tower (1); a resin column valve a (20) and a resin column valve b (21) are respectively provided on one side of the adsorption tower (2); one end of the resin column valve a (20) is connected to the system by a pipeline; one end of the resin column valve b (21) is respectively connected to the system and the resin column valve c (22) by pipelines.

2. A salt lake lithium extraction adsorbent scrubbing system according to claim 1, characterized in that: One end of the overflow port (6) extends out of the scrubbing tower (1) and is connected to the first trench (7); one end of the resin column valve c (22) is connected to the second trench (23).

3. The salt lake lithium extraction adsorbent scrubbing system according to claim 1, characterized in that: One end of the diaphragm pump A (10) is connected to a pneumatic valve d (17) and a pneumatic valve c (16) in sequence via a pipeline; the pneumatic valve d (17) and the pneumatic valve c (16) are connected to a resin column manual valve A (18) via a pipeline.

4. The salt lake lithium extraction adsorbent scrubbing system according to claim 1, characterized in that: Two visual mirrors (5) are respectively provided on the other side of the scrubbing tower (1); and a pouring port (4) is provided on the top of the scrubbing tower (1).

5. The salt lake lithium extraction adsorbent scrubbing system according to claim 1, characterized in that: The scrubbing tower (1) has a size of 2200×8180 mm.

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