Valve array interconnection structure and salt lake lithium extraction resin system using the same

Abstract

The utility model provides a valve array intercommunication structure and application valve array intercommunication structure's salt lake lithium -extracting resin system. A valve array intercommunication structure, include: First common pipe, first common pipe is connected in the top material import of resin column, first common pipe is provided with common automatic regulating valve, first common pipe is connected with raw material feed branch pipe, water washing material feed branch pipe, pre -elution feed branch pipe, primary analysis water feed branch pipe, secondary analysis water feed branch pipe, water washing acid feed branch pipe, second common pipe, second common pipe is connected in the bottom material export of resin column, second common pipe is connected with tail halogen discharge branch pipe, recovery water discharge branch pipe, washing acid discharge branch pipe, back raw material discharge branch pipe, pre -elution discharge branch pipe, washing material discharge branch pipe, primary analysis water discharge branch pipe, qualified liquid discharge branch pipe, secondary analysis water discharge branch pipe. The structure occupies less land, and resin column arrangement is more flexible, and the valve array intercommunication structure is made into pry dress equipment, and installation is simple and flexible.

Description

Technical Field

[0001] This utility model relates to the field of lithium extraction technology from salt lakes, and more specifically, to a valve array interconnection structure and a salt lake lithium extraction resin system using the valve array interconnection structure. Background Technology

[0002] Titanium-based adsorption resin lithium extraction technology is a method for extracting lithium from brine in salt lakes using titanium-based adsorbents. It offers advantages such as high selectivity, large adsorption capacity, and high stability, achieving higher lithium extraction efficiency compared to traditional methods. Industrial lithium extraction, especially from alkaline salt lakes, requires large-scale titanium adsorption resin beds.

[0003] Currently, lithium extraction from salt lakes via adsorption primarily employs fixed-bed and rotary continuous cross-linking systems. While fixed-bed systems have lower hardware investment costs, their low efficiency, low yield, and low product concentration have led to their near obsolescence. Rotary continuous cross-linking systems, with their high efficiency and automation, have been widely adopted in the adsorption stages of lithium extraction from salt lakes in recent years. However, their application has also encountered problems, such as cracking of the wheel assembly and tracks after a period of operation, resulting in high maintenance costs. Furthermore, the maximum valve size achievable with rotary continuous cross-linking systems is currently limited to 88mm-100mm, restricting the scale of individual units and keeping costs high. Utility Model Content

[0004] The purpose of this invention is to provide a valve array interconnection structure and a salt lake lithium extraction resin system using the valve array interconnection structure.

[0005] The present invention aims to solve the problems existing in the adsorption method for lithium extraction from salt lakes in the prior art.

[0006] Compared with the prior art, the technical solution of this utility model and its beneficial effects are as follows:

[0007] A valve array interconnection structure includes: a first common pipe connected to the top material inlet of a resin column, the first common pipe being equipped with a common automatic regulating valve, and connected to the first common pipe to a raw material feed branch pipe, a washed material feed branch pipe, a pre-analyze feed branch pipe, a primary analyze water feed branch pipe, a secondary analyze water feed branch pipe, and a washed acid feed branch pipe; the raw material feed branch pipe being equipped with a raw material feed automatic valve, the washed material feed branch pipe being equipped with a washed material feed automatic valve, the pre-analyze feed branch pipe being equipped with a pre-analyze feed automatic valve, the primary analyze water feed branch pipe being equipped with a primary analyze water feed automatic valve, the secondary analyze water feed branch pipe being equipped with a secondary analyze water feed automatic valve, and the washed acid feed branch pipe being equipped with a washed acid feed automatic valve; and a second common pipe connected to the bottom material outlet of the resin column. The second common pipe is connected to a tail brine discharge branch pipe, a recycled water discharge branch pipe, an acid washing discharge branch pipe, a raw material return discharge branch pipe, a pre-analyze discharge branch pipe, a washing material discharge branch pipe, a primary analysis water discharge branch pipe, a qualified liquid discharge branch pipe, and a secondary analysis water discharge branch pipe. The tail brine discharge branch pipe is equipped with a tail brine discharge automatic valve. The recycled water discharge branch pipe is equipped with a recycled water discharge automatic valve. The acid washing discharge branch pipe is equipped with an acid washing discharge automatic valve. The raw material return discharge branch pipe is equipped with a raw material return discharge automatic valve. The pre-analyze discharge branch pipe is equipped with a pre-analyze discharge automatic valve. The washing material discharge branch pipe is equipped with a washing material discharge automatic valve. The primary analysis water discharge branch pipe is equipped with a primary analysis water discharge automatic valve. The qualified liquid discharge branch pipe is equipped with a qualified liquid discharge automatic valve. The secondary analysis water discharge branch pipe is equipped with a secondary analysis water discharge automatic valve.

[0008] As a further improvement, the shared automatic regulating valve, raw material feeding automatic valve, water washing material feeding automatic valve, pre-analyzing feeding automatic valve, first-stage analyzing water feeding automatic valve, second-stage analyzing water feeding automatic valve, water washing acid feeding automatic valve, tail brine discharge automatic valve, recovered water discharge automatic valve, washing acid discharge automatic valve, raw material return discharge automatic valve, pre-analyzing discharge automatic valve, washing material discharge automatic valve, first-stage analyzing water discharge automatic valve, qualified liquid discharge automatic valve, and second-stage analyzing water discharge automatic valve are all automatic switching valves.

[0009] As a further improvement, the first common pipe is equipped with a flow display transmitter and a pressure transmitter for continuous online monitoring of flow and pressure data in the first common pipe.

[0010] As a further improvement, the recycled water outlet branch pipe is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the recycled water outlet branch pipe to determine the destination of the discharged water.

[0011] As a further improvement, the washing material outlet branch pipe is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the washing material outlet branch pipe to determine the degree of cleaning.

[0012] As a further improvement, the acid washing outlet branch pipe is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the acid washing outlet branch pipe to determine the degree of cleaning.

[0013] A lithium extraction resin system for salt lakes using a valve array interconnection structure includes a valve array interconnection structure as described above, a control system, and at least two resin columns. One end of a connecting pipe is connected to the bottom material outlet of one resin column, and the other end of the connecting pipe is connected to the top material inlet of the next resin column. The connecting pipe is equipped with an automatic connecting valve, which controls the opening and closing of the connecting pipe to control the flow of material from one resin column to the next resin column. The control system controls the opening and closing of each automatic valve in each valve array interconnection structure to control the two or more resin columns to perform adsorption, tail brine top-water, desorption, and rinsing processes in a one-to-one correspondence, and controls each resin column to sequentially change according to the process steps of adsorption, tail brine top-water, desorption, and rinsing.

[0014] As a further improvement, the valve array interconnection structure is made into a skid-mounted device for flexible installation.

[0015] As a further improvement, the resin columns are arranged in a stacked manner to save installation space.

[0016] The beneficial effects of this utility model are as follows:

[0017] This utility model provides a lithium extraction resin system for salt lakes using a valve array interconnection structure, which saves space and allows for more flexible layout. The resin columns can be placed arbitrarily according to the actual space. The valve array interconnection structure is designed as a skid-mounted device, making installation simple and flexible. The optimized valve group structural design makes the pipeline routing clear and easy to maintain and repair. The resin column volume can reach 10m³. 3 -30m 3 Even greater; the production capacity of a single set of equipment can reach more than 3 times that of a rotary continuous press, reducing equipment investment costs; the operation of each resin column is relatively independent, so if a resin column malfunctions, there is no need to stop the machine. The damaged resin column can be removed and repaired individually while the others continue to operate; or the pipeline can be connected to the spare resin, which does not affect the operation of the equipment and facilitates maintenance; changing the process is simpler, only requiring modification of the valve switching logic in the program to achieve the process change, without the need for hardware changes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structural principle of a salt lake lithium extraction resin system using a valve array interconnection structure, provided by an embodiment of this utility model.

[0019] Figure 2This is a partial structural schematic diagram of a salt lake lithium extraction resin system using a valve array interconnection structure, provided by an embodiment of this utility model.

[0020] Figure 3 This is a first schematic diagram of the resin column and valve array connection structure provided in this embodiment of the present invention.

[0021] Figure 4 This is a second schematic diagram of the resin column and valve array connection structure provided in this embodiment of the present invention.

[0022] In the picture:

[0023] 101. First common pipe; 102. Common automatic regulating valve

[0024] 103. Raw material feed branch pipe 104. Automatic raw material feed valve

[0025] 105. Washed material feed branch pipe 106. Washed material automatic feed valve

[0026] 107. Pre-analyze feed branch pipe 108. Pre-analyze feed automatic valve

[0027] 109. Primary analytical water inlet branch pipe; 110. Primary analytical water inlet automatic valve.

[0028] 111. Secondary analytical water inlet branch pipe 112. Secondary analytical water inlet automatic valve

[0029] 113. Water washing acid feed branch pipe 114. Water washing acid feed automatic valve

[0030] 201. Second common pipe 202. Tail brine discharge branch pipe

[0031] 203. Automatic tail brine discharge valve 204. Recycled water discharge branch pipe

[0032] 205. Automatic valve for recycled water discharge 206. Branch pipe for acid washing discharge

[0033] 207. Automatic acid washing discharge valve 208. Raw material return discharge branch pipe

[0034] 209. Automatic valve for returning raw materials to discharge 210. Pre-analyze discharge branch pipe

[0035] 211. Pre-analyzed discharge automatic valve 212. Washing discharge branch pipe

[0036] 213. Automatic discharge valve for washing material 214. Branch pipe for primary analytical water discharge

[0037] 215. Automatic valve for primary analytical water discharge 216. Branch pipe for qualified liquid discharge

[0038] 217. Automatic valve for discharging qualified liquid 218. Secondary analytical water discharge branch pipe

[0039] 219. Automatic valve for secondary desorption water discharge; 301. Resin column.

[0040] 302. Connecting pipe; 303. Connecting automatic valve

[0041] A. Valve array interconnection structure Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0043] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Reference Figures 1 to 4As shown, a valve array interconnection structure includes: a first common pipe 101 connected to the top material inlet of the resin column 301; a common automatic regulating valve 102 installed on the first common pipe 101; and connected to the first common pipe 101 are a raw material feed branch pipe 103, a water washing material feed branch pipe 105, a pre-analyze feed branch pipe 107, a primary analyze water feed branch pipe 109, a secondary analyze water feed branch pipe 111, and a water washing acid feed branch pipe 113. The raw material feed branch pipe 103 is equipped with a raw material feed automatic valve 1. 04. The washing material feed branch pipe 105 is equipped with a washing material feed automatic valve 106; the pre-analyzing feed branch pipe 107 is equipped with a pre-analyzing feed automatic valve 108; the primary analyzing water feed branch pipe 109 is equipped with a primary analyzing water feed automatic valve 110; the secondary analyzing water feed branch pipe 111 is equipped with a secondary analyzing water feed automatic valve 112; and the washing acid feed branch pipe 113 is equipped with a washing acid feed automatic valve 114. A second common pipe 201 is connected to the bottom material outlet of the resin column 301. The second common pipe 201 is connected to a tail brine discharge branch pipe 202, a recycled water discharge branch pipe 204, an acid washing discharge branch pipe 206, a raw material return discharge branch pipe 208, a pre-analyze discharge branch pipe 210, a washing material discharge branch pipe 212, a primary analyze water discharge branch pipe 214, a qualified liquid discharge branch pipe 216, and a secondary analyze water discharge branch pipe 218. The tail brine discharge branch pipe 202 is equipped with a tail brine discharge automatic valve 203, the recycled water discharge branch pipe 204 is equipped with a recycled water discharge automatic valve 205, and the acid washing discharge branch pipe 206 is equipped with… The system includes an automatic acid washing discharge valve 207, an automatic raw material discharge valve 209 on the return raw material discharge branch pipe 208, an automatic pre-analytical discharge valve 211 on the pre-analytical discharge branch pipe 210, an automatic washing discharge valve 213 on the washing material discharge branch pipe 212, an automatic primary analytical water discharge valve 215 on the primary analytical water discharge branch pipe 214, an automatic qualified liquid discharge valve 217 on the qualified liquid discharge branch pipe 216, and an automatic secondary analytical water discharge valve 219 on the secondary analytical water discharge branch pipe 218.

[0045] The shared automatic regulating valve 102, raw material feeding automatic valve 104, water washing material feeding automatic valve 106, pre-analyzing feeding automatic valve 108, primary analyzing water feeding automatic valve 110, secondary analyzing water feeding automatic valve 112, water washing acid feeding automatic valve 114, tail brine discharge automatic valve 203, recycled water discharge automatic valve 205, washing acid discharge automatic valve 207, raw material discharge automatic valve 209, pre-analyzing discharge automatic valve 211, washing material discharge automatic valve 213, primary analyzing water discharge automatic valve 215, qualified liquid discharge automatic valve 217, and secondary analyzing water discharge automatic valve 219 are all pneumatic valves.

[0046] The first common pipe 101 is equipped with a common automatic regulating valve 102 for regulating the flow rate of the solution entering the resin column 301.

[0047] The first common pipe 101 is equipped with a flow display transmitter and a pressure transmitter for online continuous detection of flow and pressure data in the first common pipe 101.

[0048] The recycled water outlet branch pipe 204 is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the recycled water outlet branch pipe 204 to determine the destination of the discharged water.

[0049] The washing material outlet branch pipe 212 is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the washing material outlet branch pipe 212 to determine the degree of cleaning.

[0050] The acid washing outlet branch pipe 206 is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the acid washing outlet branch pipe 206 to determine the degree of cleaning.

[0051] A lithium extraction resin system for salt lakes using a valve array interconnection structure includes the aforementioned valve array interconnection structure A, a control system, and at least two sets of resin columns 301. One end of a connecting pipe 302 is connected to the bottom material outlet of one set of resin columns 301, and the other end of the connecting pipe 302 is connected to the top material inlet of the next set of resin columns 301. The connecting pipe 302 is equipped with an automatic connecting valve 303, which controls the opening and closing of the connecting pipe 302 to control the flow of material from one set of resin columns 301 to the next set of resin columns 301. The control system controls the opening and closing of each automatic valve in each valve array interconnection structure to control the two sets of resin columns 301 to perform adsorption, tail brine top-water, desorption, and rinsing processes one-to-one, and controls each set of resin columns 301 to sequentially cycle through the adsorption, tail brine top-water, desorption, and rinsing process steps.

[0052] The valve array interconnection structure A is made into a skid-mounted device for flexible installation.

[0053] The resin columns 301 are arranged in layers to save installation space.

[0054] The working principle of the valve array interconnection structure and the brine lithium extraction resin system using the valve array interconnection structure provided by this utility model is as follows: The system determines which process (adsorption, rinsing, desorption, or tail brine top-watering) the resin column 301 is in, and opens the corresponding inlet and outlet automatic valves. Then, it automatically adjusts the common automatic regulating valve 102 on the first common pipe 101 according to the set flow rate. If series feeding is required, the connecting automatic valve 303 between the resin columns 301 is opened. For example, if the resin column 301 is in the feeding process, the raw material feeding automatic valve 104 and the tail brine discharge automatic valve 203 are opened simultaneously, and the common automatic regulating valve 102 on the first common pipe 101 is automatically adjusted according to the set feeding flow rate. When the feeding time reaches the set time, the resin column 301 enters the next process, opening the corresponding valve. This process is repeated cyclically.

[0055] The above embodiments are only used to explain the technical solution of this utility model and are not intended to limit it. Those skilled in the art should understand that any modifications and equivalent substitutions that do not depart from the spirit and scope of this utility model should fall within the protection scope of the claims of this utility model.

Claims

1. A valve array interconnect structure, characterized by, include: The first common pipe is connected to the top material inlet of the resin column. The first common pipe is equipped with a common automatic regulating valve. The first common pipe is connected to a raw material feed branch pipe, a water washing material feed branch pipe, a pre-analyze feed branch pipe, a primary analyze water feed branch pipe, a secondary analyze water feed branch pipe, and a water washing acid feed branch pipe. The raw material feed branch pipe is equipped with a raw material feed automatic valve. The water washing material feed branch pipe is equipped with a water washing material feed automatic valve. The pre-analyze feed branch pipe is equipped with a pre-analyze feed automatic valve. The primary analyze water feed branch pipe is equipped with a primary analyze water feed automatic valve. The secondary analyze water feed branch pipe is equipped with a secondary analyze water feed automatic valve. The water washing acid feed branch pipe is equipped with a water washing acid feed automatic valve. The second common pipe is connected to the bottom material outlet of the resin column. It is connected to several branch pipes: a tail brine discharge branch pipe, a recycled water discharge branch pipe, an acid washing discharge branch pipe, a raw material return discharge branch pipe, a pre-analytical discharge branch pipe, a washing discharge branch pipe, a primary analytical water discharge branch pipe, a qualified liquid discharge branch pipe, and a secondary analytical water discharge branch pipe. Each tail brine discharge branch pipe is equipped with an automatic tail brine discharge valve, each recycled water discharge branch pipe is equipped with an automatic recycled water discharge valve, each acid washing discharge branch pipe is equipped with an automatic acid washing discharge valve, each raw material return discharge branch pipe is equipped with an automatic raw material return discharge valve, each pre-analytical discharge branch pipe is equipped with an automatic pre-analytical discharge valve, each washing discharge branch pipe is equipped with an automatic washing discharge valve, each primary analytical water discharge branch pipe is equipped with an automatic primary analytical water discharge valve, each qualified liquid discharge branch pipe is equipped with an automatic qualified liquid discharge valve, and each secondary analytical water discharge branch pipe is equipped with an automatic secondary analytical water discharge valve.

2. A valve array interconnection structure according to claim 1, wherein The shared automatic regulating valve, raw material feeding automatic valve, water washing material feeding automatic valve, pre-analyzing feeding automatic valve, first-stage analyzing water feeding automatic valve, second-stage analyzing water feeding automatic valve, water washing acid feeding automatic valve, tail brine discharge automatic valve, recovered water discharge automatic valve, washing acid discharge automatic valve, returned raw material discharge automatic valve, pre-analyzing discharge automatic valve, washing material discharge automatic valve, first-stage analyzing water discharge automatic valve, qualified liquid discharge automatic valve, and second-stage analyzing water discharge automatic valve are all automatic on / off valves.

3. The valve array interconnect structure of claim 1, wherein The first common pipe is equipped with a flow display transmitter and a pressure transmitter for continuous online monitoring of flow and pressure data in the first common pipe.

4. The valve array interconnect structure of claim 1, wherein The recycled water outlet branch pipe is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the recycled water outlet branch pipe to determine the destination of the discharged water.

5. The valve array interconnect structure of claim 1, wherein The washing material outlet branch pipe is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the washing material outlet branch pipe to determine the degree of cleaning.

6. The valve array interconnect structure of claim 1, wherein The acid washing outlet branch pipe is equipped with a conductivity transmitter for continuous online monitoring of the conductivity of the aqueous solution in the acid washing outlet branch pipe to determine the degree of cleaning.

7. A salt lake lithium extraction resin system using a valve array interconnect structure, comprising a valve array interconnect structure according to any one of claims 1 to 6, wherein The control system is used to control the opening and closing of each automatic valve in the valve array interconnection structure, so as to control the two or more sets of resin columns to respectively and one by one carry out the adsorption, tailing top water, resolution and elution processes, and control each set of resin columns to sequentially change according to the process steps of adsorption, elution, resolution and tailing top water.

8. The salt lake lithium extraction resin system using valve array connection structure according to claim 7, characterized in that, The valve array interconnection structure is made into a skid-mounted device, so as to be flexibly installed.

9. The lithium extraction resin system using valve array interconnection according to claim 7, characterized in that, The resin columns are arranged in a stack, so as to save installation space.

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