A purification and refining system
By designing a purification and refining system connected in series with four kettle bodies, the problem of frequent round trips of workers affecting production efficiency is solved, and an efficient process of raw material addition and testing is realized, which improves overall production efficiency and reduces costs.
Patent Information
- Application Number
- CN202421533812.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-07-01
AI Technical Summary
In the existing battery-grade lithium salt production process, workers need to frequently travel back and forth to the sodium carbonate storage point and reactor, resulting in low production efficiency and limited detection efficiency, which increases production costs.
A purification and refining system is designed to simplify the raw material addition and detection process by connecting four kettle bodies in series. The specific plan includes adding leaching liquid, sodium hydroxide and sodium carbonate on the first kettle body, reacting all raw materials in multiple kettle bodies, and detecting them at the third kettle body detection port. According to the detection results, the material flow is controlled through the valve to realize material transfer and reaction between the kettle bodies.
By reducing the time required for raw material addition and testing, production efficiency is significantly improved, production costs are reduced, and process flow is optimized.
Smart Images
Figure CN222739149U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery-grade lithium salt production technology, in particular to a purification and refining system. Background Art
[0002] In the production process of battery-grade lithium carbonate or lithium hydroxide, the acid clinker needs to be leached, impurity-removed, purified and refined by water. In this process, calcium powder needs to be added to remove excess acid and a large amount of impurities such as iron and aluminum to obtain a leachate, and then sodium hydroxide and sodium carbonate are added to the leachate to remove a small amount of residual calcium, magnesium, iron, aluminum, etc., thereby obtaining a pure lithium sulfate purified liquid.
[0003] The entire refining process is carried out in the reactor. The current technical solution is to install 6 reactors in the workshop, each reactor is equipped with multiple feed ports, each reactor is connected to a sodium hydroxide pipeline and a leachate pipeline, and has a feed port for adding sodium carbonate. A discharge port and a detection port are also provided on each reactor body.
[0004] During the production process, workers need to add sodium carbonate to the sodium carbonate inlet of each reactor separately. However, there are six reactors placed side by side in the production workshop. There is a certain distance from the first reactor to the last reactor, usually 20 to 30 meters, and the position of sodium carbonate in the workshop is fixed. It takes a certain amount of time for workers to travel back and forth between the sodium carbonate storage point and each reactor, which directly affects production efficiency.
[0005] Then after a certain period of reaction, it is necessary to hold the detector and conduct detection on the detection port of each reactor, mainly to detect the concentration of carbonate ions and hydroxide ions in the reactor. In general, configuring a detector for each reactor will increase the overall production cost. If only one detector is used to detect all reactors, the detection efficiency will decrease. The reason is that each time the detector is tested, the detector needs to be installed on the detection port. After the test is completed, the connection port of the detector needs to be cleaned before it can be used on other reactors. In addition, only after it is detected that the concentration of carbonate ions and hydroxide ions in the reactor meets the standard, the material in the reactor will be discharged through the corresponding discharge port. Utility Model Content
[0006] With respect to the installed reactors mentioned above, there are technical problems affecting production efficiency in terms of adding raw materials and testing. The utility model provides a purification and refining system that can be applied to the original production line and has the advantage of improving production efficiency after modifying the existing equipment.
[0007] The technical solution of the utility model is:
[0008] A purification and refining system, comprising:
[0009] Four kettle bodies are arranged in series one by one, and the four kettle bodies are sequentially arranged as a first kettle body, a second kettle body, a third kettle body and a fourth kettle body, the first kettle body is provided with at least three feed inlets, the third kettle body is provided with a detection port, the fourth kettle body is provided with at least two feed inlets, the third kettle body and the fourth kettle body are both provided with discharge ports, and all the discharge ports are provided with first valves in a normally closed state;
[0010] A detector is detachably mounted on the detection port;
[0011] A sodium hydroxide pipeline connected to one of the feed inlets on the first kettle body;
[0012] A leachate pipeline connected to another feed inlet on the first kettle body;
[0013] Wherein, another feed inlet on the first kettle body is open and is used for feeding sodium carbonate;
[0014] If the data measured by the detector at the detection port meets the standard, the first valve on the third kettle body is in an open state, and the first valve on the fourth kettle body is in a closed state.
[0015] Optionally, the fourth kettle body has a feed inlet connected to a sodium hydroxide pipeline, and this end of the sodium hydroxide pipeline has a second valve, and the fourth kettle body has an open feed inlet for adding sodium carbonate.
[0016] Optionally, the system comprises a plurality of the fourth kettle bodies, and all the fourth kettle bodies are respectively connected in series with the third kettle body, so that all the fourth kettle bodies form a parallel structure.
[0017] Optionally, a third valve is respectively arranged between all the fourth kettle bodies and the third kettle bodies, and only one of all the third valves is in an open state, or all of them are in a closed state.
[0018] Optionally, all the fourth kettle bodies have a feed inlet which is connected to the sodium hydroxide pipeline through a branch pipeline, and a fourth valve is provided on the branch pipeline. All the fourth kettle bodies have a feed inlet for adding sodium carbonate.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] Four adjacent kettles are randomly selected and connected in series, and the leaching solution, sodium hydroxide and sodium carbonate are added to the first kettle. Then, during the flow process, all the raw materials react in the first kettle, the second kettle and the third kettle, and are detected at the detection port of the third kettle.
[0021] When the carbonate ion concentration and the hydroxide ion concentration are both up to standard, the material in the reactor can be directly discharged from the discharge port on the third reactor body. When the carbonate ion concentration and the hydroxide ion concentration are both not up to standard, the material in the third reactor body is introduced into the fourth reactor body, and sodium hydroxide and sodium carbonate are added to the two feed ports of the fourth reactor body. After the material in the third reactor body continues to react in the fourth reactor body, it is discharged from the discharge port of the fourth reactor body.
[0022] In this technical solution, the positions for adding raw materials are only on the first kettle body and the fourth kettle body, and the actual time for adding raw materials on the fourth kettle body is relatively short. At the same time, it is only necessary to use a detector to perform detection on the detection port of the third kettle body, which greatly reduces the time required for detection. Therefore, compared with the existing technology, this technical solution reduces the time for adding raw materials and the time required for detection, thereby improving the efficiency of the entire production. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION
[0025] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0029] Example:
[0030] See also Figure 1 , a purification and refining system, including four kettles, a sodium hydroxide pipeline 1, a detector 2 and a leachate pipeline 3, specifically:
[0031] The four kettle bodies are arranged side by side, and the four kettle bodies are arranged in series one by one, and the four kettle bodies are sequentially arranged as a first kettle body 4, a second kettle body 5, a third kettle body 6 and a fourth kettle body 7, wherein the first kettle body 4 has at least three feed ports 8, the third kettle body 6 is provided with a detection port 9 and a discharge port 10, the fourth kettle body 7 is provided with at least two feed ports 8 and a discharge port 10, and a first valve 11 is respectively provided on the discharge port 10 on the third kettle body 6 and the fourth kettle body 7.
[0032] The detector 2 is detachably arranged on the detection port 9 on the third kettle body 6. The sodium hydroxide pipeline 1 is respectively connected with an inlet 8 of the first kettle body 4 and an inlet 8 of the fourth kettle body 7, and a second valve 12 is arranged on the inlet 8 of the first kettle body 4 and the inlet 8 of the fourth kettle body 7.
[0033] The leachate pipeline 3 is connected to only one feed inlet 8 of the first kettle body 4, and the third feed inlet 8 of the first kettle body 4 and the second feed inlet 8 of the fourth kettle body 7 are both open structures, and are used to feed sodium carbonate therein.
[0034] If the carbonate ion concentration data and the hydroxide ion concentration data measured by the detector 2 at the detection port 9 on the third kettle body 6 meet the standards, the first valve 11 on the third kettle body 6 is in an open state, and the first valve 11 on the fourth kettle body 7 is in a closed state.
[0035] On the contrary, if the detector 2 measures at the detection port 9 on the third kettle body 6 that any one of the carbonate ion concentration data and the hydroxide ion concentration data does not meet the standard, the first valve 11 on the third kettle body 6 is in a closed state, the first valve 11 on the fourth kettle body 7 is in an open state, and the second valve 12 on the top of the fourth kettle body 7 is opened at the same time, and sodium carbonate is added to the interior of the fourth kettle body 7.
[0036] This technical solution is transformed according to the original production workshop, and four adjacent kettles are randomly selected and connected in series. Leachate, sodium hydroxide and sodium carbonate are added to the first kettle 4. Then, during the flow process, all raw materials react in the first kettle 4, the second kettle 5 and the third kettle 6, and are detected at the detection port 9 of the third kettle 6.
[0037] When the carbonate ion concentration and the hydroxide ion concentration both meet the standards, the material in the reactor can be directly discharged from the discharge port 10 on the third reactor body 6. When the carbonate ion concentration and the hydroxide ion concentration both do not meet the standards, the material in the third reactor body 6 is introduced into the fourth reactor body 7, and sodium hydroxide and sodium carbonate are added to the two feed ports 8 of the fourth reactor body 7. After the material in the third reactor body 6 continues to react in the fourth reactor body 7, it is discharged from the discharge port 10 of the fourth reactor body 7.
[0038] In this technical solution, the positions for adding raw materials are only on the first kettle body 4 and the fourth kettle body 7, and the actual time for adding raw materials on the fourth kettle body 7 is relatively short, and only the detector 2 needs to be used to perform detection on the detection port 9 of the third kettle body 6, which greatly reduces the time required for detection. Therefore, compared with the prior art, this technical solution reduces the time for adding raw materials and the time required for detection, thereby improving the efficiency of the entire production.
[0039] Preferably, the system includes multiple fourth kettle bodies 7. In this embodiment, since there are six reaction kettles on the original production line, the three adjacent kettle bodies at one end are set as the first kettle body 4, the second kettle body 5, and the third kettle body 6, and the other three kettle bodies are set as the fourth kettle body 7. Therefore, there are three fourth kettle bodies 7 in total.
[0040] Specifically, the three fourth kettle bodies 7 are all individually connected to the third kettle body 6, so that the three fourth kettle bodies 7 form a parallel structure, and a third valve 13 is respectively arranged between the three fourth kettle bodies 7 and the third kettle body 6. During use, only one of the three third valves 13 is in an open state, and all three third valves 13 are in a closed state.
[0041] In addition, the sodium hydroxide pipeline 1 is connected to an inlet 8 on all the fourth kettle bodies 7 through a branch pipeline 14, and each branch pipeline 14 is provided with a second valve 12. All the fourth kettle bodies 7 have an inlet 8 for adding sodium carbonate, and the outlets 10 of the three fourth kettle bodies 7 are respectively provided with a second valve 12.
[0042] During the operation of this embodiment, since all reactants entering the fourth kettle body 7 require a certain reaction time, when one of the fourth kettle bodies 7 is reacting, the third valve 13 and the second valve 12 connected thereto can be closed, and then the third valve 13 on the other fourth kettle body 7 can be opened, so that the material output from the third kettle body 6 enters the other fourth kettle body 7.
[0043] The material in the fourth kettle 7 will generally directly meet the standard of direct discharge after a certain period of reaction.
[0044] Therefore, through this technical solution, the series relationship between the three fourth kettle bodies 7 and the third kettle body 6 can be reasonably utilized to ensure that the materials in the first kettle body 4, the second kettle body 5 and the third kettle body 6 are in a state of continuous reaction, thereby improving production efficiency.
[0045] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.
Claims
1. A purification and refining system, characterized in that: include: Four kettle bodies are arranged in series one by one, and the four kettle bodies are sequentially arranged as a first kettle body, a second kettle body, a third kettle body and a fourth kettle body, the first kettle body is provided with at least three feed inlets, the third kettle body is provided with a detection port, the fourth kettle body is provided with at least two feed inlets, the third kettle body and the fourth kettle body are both provided with discharge ports, and all the discharge ports are provided with first valves in a normally closed state; A detector is detachably mounted on the detection port; A sodium hydroxide pipeline connected to one of the feed inlets on the first kettle body; A leachate pipeline connected to another feed inlet on the first kettle body; Wherein, another inlet on the first kettle body is open and is used for feeding sodium carbonate; If the data measured by the detector at the detection port meets the standard, the first valve on the third kettle body is in an open state, and the first valve on the fourth kettle body is in a closed state.
2. The purification and refining system according to claim 1, characterized in that: The fourth kettle body has a feed inlet connected to the sodium hydroxide pipeline, and this end of the sodium hydroxide pipeline is provided with a second valve. The fourth kettle body has an open feed inlet for adding sodium carbonate.
3. The purification and refining system according to claim 2, characterized in that: The system comprises a plurality of the fourth kettle bodies, and all the fourth kettle bodies are respectively connected in series with the third kettle body, so that all the fourth kettle bodies form a parallel structure.
4. The purification and refining system according to claim 3, characterized in that: A third valve is respectively arranged between all the fourth kettle bodies and the third kettle bodies, and only one of all the third valves is in an open state, or all of them are in a closed state.
5. The purification and refining system according to claim 4, characterized in that: All the fourth kettle bodies have a feed inlet which is connected to the sodium hydroxide pipeline through a branch pipeline, and a fourth valve is provided on the branch pipeline. All the fourth kettle bodies have a feed inlet for adding sodium carbonate.