CN211282242U - Long-term storage system of 1, 3-propane sultone - Google Patents
Long-term storage system of 1, 3-propane sultone Download PDFInfo
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- CN211282242U CN211282242U CN201922266118.XU CN201922266118U CN211282242U CN 211282242 U CN211282242 U CN 211282242U CN 201922266118 U CN201922266118 U CN 201922266118U CN 211282242 U CN211282242 U CN 211282242U
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Abstract
The utility model relates to a 1, 3-propane sultone's long-term storage system, it includes the head tank, organic solvent jar, blending tank and holding vessel, the head tank is through the pipeline and the blending tank feed inlet intercommunication that are equipped with first measuring pump, organic solvent jar is through the pipeline and the blending tank feed inlet intercommunication that are equipped with the second measuring pump, first measuring pump and second measuring pump are parallelly connected, the pipeline of the discharge gate of blending tank through being equipped with first delivery pump communicates with the feed inlet of holding vessel, the pipeline of the discharge gate through being equipped with the second delivery pump of holding vessel with take the pipeline intercommunication, holding vessel and/or holding vessel pass through exhaust duct and vacuum pump intercommunication, the holding vessel passes through gas injection pipeline one and inert gas storage tank intercommunication. The system has the advantages that the system can realize long-term storage of the 1, 3-propane sultone without hydrolysis deterioration; the system can facilitate the mixing, storage and taking of materials, and save labor; the equipment used by the whole system is simple in structure, easy to assemble, low in cost and easy to popularize and use.
Description
Technical Field
The utility model belongs to the chemical industry raw materials storage field, concretely relates to long-term storage system of 1, 3-propane sultone.
Background
The 1, 3-propane sultone is white crystal at normal temperature, the melting point is 31-33 ℃, and the common preservation method is to directly seal the crystal in a shady and dry place to avoid light for preservation. However, with the existing preservation method, 1, 3-propane sultone is gradually hydrolyzed into hydroxy propane sulfonic acid with the prolongation of preservation time, so that the purity of 1, 3-propane sultone in the product is continuously reduced, the chroma is gradually increased with the increase of free acid, the time for maintaining the purity of 1, 3-propane sultone to be more than 99.90 percent is generally not more than 2 months, namely after being preserved for 2 months, the 1, 3-propane sultone can not meet the requirement of the additive of the lithium ion battery electrolyte, and needs to be prepared again or reworked.
Therefore, in the prior art, the 1, 3-propane sultone and an organic solvent (which is in a liquid state at 30 ℃ and does not react with the 1, 3-propane sultone) are mixed and then are hermetically stored under the protection of inert gas, the actual measurement storage effect is good, and the normal use can be still ensured after the storage for more than one year. However, in practical production, it is complicated to manually mix 1, 3-propane sultone with an organic solvent, and an effective system suitable for long-term storage of the raw material mixed with the organic solvent is lacking.
SUMMERY OF THE UTILITY MODEL
The utility model provides a long-term storage system of 1, 3-propane sultone, aim at providing a convenient to use, systematic good and can preserve 1, 3-propane sultone for a long time and not hydrolyze rotten storage system.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a long-term storage system of 1, 3-propane sultone, its includes head tank, organic solvent jar, blending tank and holding vessel, the head tank through be equipped with first measuring pump the pipeline with blending tank feed inlet intercommunication, the organic solvent jar through be equipped with the second measuring pump the pipeline with blending tank feed inlet intercommunication, first measuring pump and second measuring pump are parallelly connected, the discharge gate of blending tank through be equipped with first delivery pump the pipeline with the feed inlet intercommunication of holding vessel, the discharge gate of holding vessel through be equipped with the second delivery pump the pipeline with take the pipeline intercommunication, the blending tank and/or the holding vessel passes through exhaust duct and vacuum pump intercommunication, the holding vessel passes through gas injection pipeline one and inert gas storage tank intercommunication.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Further, the mixing tank is communicated with the inert gas storage tank through a second gas injection pipeline.
Adopt the beneficial effect of above-mentioned further scheme to be, when having the raw materials deposit in the holding vessel, can not pour into the blending tank through the mode of pouring into inert gas into the holding vessel (even the valve between holding vessel jar and the blending tank is opened), but be equipped with gas injection pipeline two this moment and independently pour into inert gas into the blending tank in order to take away the air that the water content that the jar may have exceeds standard.
Further, the mixing tank is a tank body with a stirring mechanism, and the stirring mechanism is a magnetic stirrer or an electric stirrer with stirring blades.
The adoption of the further scheme has the beneficial effects that the mixing tank can realize automatic stirring to uniformly mix two materials, so that the labor is saved; in addition, the magnetic stirring has the advantages of good sealing performance of the mixing tank and avoidance of interference of external environment.
Furthermore, a molecular sieve cylinder is connected in series on the taking pipeline.
The beneficial effect who adopts above-mentioned further scheme is that, the material of storing in the storage tank filters the dehydration through a molecular sieve section of thick bamboo when taking, guarantees that the material has extremely low water content when taking the pipeline discharge, and the existence of a molecular sieve section of thick bamboo also can guarantee to take the pipeline in moisture content low, avoids the big air of humidity to influence the material preservation effect through taking the pipeline to the storage tank diffusion.
Further, the inert gas in the inert gas storage tank is nitrogen or helium.
The adoption of the further scheme has the beneficial effects that the water content of nitrogen or helium stored in the common steel cylinder is extremely low, and the nitrogen or helium can be used for discharging air with higher humidity possibly existing in the mixing tank, the storage tank and other pipelines contained in the system so as to create a better storage environment; in addition, after the storage tank is filled with materials, the injected inert gas with certain pressure is filled above the liquid level of the materials in the tank, so that air is well isolated, and moisture in the air is prevented from entering the tank.
Further, the organic solvent in the organic solvent tank is dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate or propylene carbonate.
The further scheme has the beneficial effects that the solvents have lower melting points and are liquid at normal temperature, so the solvents can be kept in a liquid state at normal temperature after being mixed with 1, 3-propane sultone in a certain proportion, and are convenient to store and take; the solvent also has the characteristic of large difference between the melting point and the boiling point of the 1, 3-propane sultone, so that the solvent can be quickly separated by cooling crystallization or reduced pressure distillation.
Further, the raw material tank, the organic solvent tank, the mixing tank and the storage tank are all placed in a shading thermostatic chamber, and the temperature in the thermostatic chamber is controlled to be 33-35 ℃.
Adopt above-mentioned further scheme's beneficial effect be, can effectively guarantee that the raw materials in the head tank keeps for liquid form, avoids the crystallization, guarantees that it easily carries in to the blending tank.
Compared with the prior art, the beneficial effects of the utility model are that:
firstly, a mixing tank and a storage tank of inert gas are matched through a vacuum pump, so that the mixing tank and the storage tank are dried and cleaned, then liquid 1, 3-propane sultone and an organic solvent are respectively pumped into the mixing tank through a metering pump according to a certain proportion to be mixed, and finally the mixture is conveyed into the storage tank and is injected with inert gas for protection, so that the 1, 3-propane sultone can be preserved for a long time without hydrolysis and deterioration; the system can facilitate the mixing, storage and use of the 1, 3-propane sultone and the organic solvent, and save labor; the arrangement of the exhaust pipeline and the inert gas injection pipeline can ensure the construction of a better storage environment; the equipment used by the whole system is simple in structure, easy to assemble, low in cost and easy to popularize and use.
Drawings
Fig. 1 is a schematic diagram of a long-term storage system of 1, 3-propane sultone provided by the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a raw material tank; 2. an organic solvent tank; 3. a mixing tank; 4. a storage tank; 5. a first metering pump; 6. a second metering pump; 7. a first delivery pump; 8. a second delivery pump; 9. taking out the pipeline; 10. an exhaust duct; 11. a vacuum pump; 12. a gas injection pipe I; 13. an inert gas storage tank; 14. a second gas injection pipe; 15. a molecular sieve cylinder.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in figure 1, the utility model provides a long-term storage system of 1, 3-propane sultone, which comprises a raw material tank 1, an organic solvent tank 2, a mixing tank 3 and a storage tank 4, wherein the raw material tank 1 is communicated with a feed inlet of the mixing tank 3 through a pipeline provided with a first metering pump 5, the organic solvent tank 2 is communicated with a feed inlet of the mixing tank 3 through a pipeline provided with a second metering pump 6, the first metering pump 5 is connected with the second metering pump 6 in parallel, the discharge hole of the mixing tank 3 is communicated with the feed hole of the storage tank 4 through a pipeline provided with a first delivery pump 7, the discharge hole of the storage tank 4 is communicated with a taking pipeline through a pipeline provided with a second delivery pump 8, the mixing tank 3 and/or the storage tank 4 are/is communicated with a vacuum pump 11 through an exhaust pipeline 10, and the storage tank 4 is communicated with an inert gas storage tank 13 through a gas injection pipeline one 12.
At least the material tank should be kept at an environment of 33 ℃ or higher when the 1, 3-propane sultone is temporarily placed, so that the material is prevented from crystallizing in the material tank and affecting the transportation of the material into the mixing tank. In addition, the raw material tank and the mixing tank are not suitable for storing the 1, 3-propane sultone or the mixed solution for a long time, the materials in the raw material tank and the mixing tank are only used for temporarily storing the corresponding materials, and the longest period is not more than two months. In addition, as shown in fig. 1, it is easily understood that necessary valves should be disposed on corresponding pipes in the system, and the disposition of the valves is the basic knowledge of those skilled in the art, and will not be described herein.
Further, the mixing tank 3 is communicated with the inert gas storage tank 13 through a second gas injection pipeline 14.
Further, the mixing tank 3 is a tank body with a stirring mechanism, and the stirring mechanism is a magnetic stirrer or an electric stirrer with stirring blades.
It should be noted that the long-term storage system preferably uses a magnetic stirrer.
Further, a molecular sieve cylinder 15 is connected in series on the taking pipeline.
The molecular sieve cylinder is preferably a glass cylinder, both ends of which are provided with sieves, and a molecular sieve for dehydration is arranged in the cylinder between the two sieves.
Further, the inert gas in the inert gas storage tank 13 is nitrogen or helium.
Further, the organic solvent in the organic solvent tank 2 is dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate or propylene carbonate.
Further, the raw material tank 1, the organic solvent tank 2, the mixing tank 3 and the storage tank 4 are all placed in a shading thermostatic chamber, and the temperature in the thermostatic chamber is controlled to be 33-40 ℃.
The utility model provides a basic application method of above-mentioned 1, 3-propane sultone's long-term storage system as follows:
temporarily storing 1, 3-propane sultone produced in a factory in a raw material tank, and controlling the temperature to be more than 33 ℃ to ensure that the material in the raw material tank is not crystallized so as to be conveyed to a mixing tank;
dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate or propylene carbonate solvent with extremely low water content is put into the organic solvent tank, the water content of the organic solvent tank is lower than 50ppm, and the organic solvent tank is liquid at normal temperature, so the organic solvent tank cannot be deliquesced, and the water content of the organic solvent tank cannot be increased after short-time storage;
pumping out air with possibly overhigh humidity in a mixing tank and a storage tank through a vacuum pump, putting a certain amount of inert gas into an inert gas storage tank for purging after each pumping out, closing valves on an exhaust pipeline and a gas injection pipeline after repeating for several times, feeding materials in a raw material tank and an organic solvent tank into the mixing tank for mixing according to a certain proportion (the mass ratio of 1, 3-propane sultone to the organic solvent is 1: 0.1-10) through a metering pump, then feeding the materials into the storage tank through a first conveying pump, and finally injecting inert gas into the storage tank for protection (the air pressure is preferably 0.2-0.3 MPa).
When the device is used, the device is discharged through a second delivery pump, and the 1, 3-propane sultone can be quickly separated out through low-temperature crystallization or reduced pressure distillation after the discharge.
It should be noted that after the system is assembled in a factory, the longest storage time of the 1, 3-propane sultone is 15 months at present, the purity after the 1, 3-propane sultone is taken out and separated is not much different from that before the 1, 3-propane sultone is stored, and the use requirement of the 1, 3-propane sultone as an additive of the lithium ion battery electrolyte is still met. The system is suitable for manufacturers of 1, 3-propane sultone and lithium battery manufacturers with large usage amount of 1, 3-propane sultone.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. The long-term storage system of 1, 3-propane sultone is characterized by comprising a raw material tank (1), an organic solvent tank (2), a mixing tank (3) and a storage tank (4), wherein the raw material tank (1) is communicated with a feed inlet of the mixing tank (3) through a pipeline provided with a first metering pump (5), the organic solvent tank (2) is communicated with a feed inlet of the mixing tank (3) through a pipeline provided with a second metering pump (6), the first metering pump (5) and the second metering pump (6) are connected in parallel, a discharge outlet of the mixing tank (3) is communicated with a feed inlet of the storage tank (4) through a pipeline provided with a first conveying pump (7), a discharge outlet of the storage tank (4) is communicated with a taking pipeline through a pipeline provided with a second conveying pump (8), the mixing tank (3) and/or the storage tank (4) is communicated with a vacuum pump (11) through an exhaust pipeline (10), the storage tank (4) is communicated with an inert gas storage tank (13) through a first gas injection pipeline (12).
2. A long term storage system of 1, 3-propane sultone according to claim 1, characterized in that the mixing tank (3) is in communication with the inert gas storage tank (13) through gas injection line two (14).
3. The long-term storage system of 1, 3-propane sultone according to claim 1, characterized in that the mixing tank (3) is a tank with stirring mechanism, which is a magnetic stirrer or an electric stirrer with stirring blades.
4. A system for the long-term storage of 1, 3-propane sultone according to claim 1, characterized in that the dispensing line is connected in series with a molecular sieve cartridge (15).
5. A long term storage system of 1, 3-propane sultone according to claim 1, characterized in that the inert gas in the inert gas storage tank (13) is nitrogen or helium.
6. A long term storage system of 1, 3-propane sultone according to any of claims 1 to 5 characterized in that the organic solvent in the organic solvent tank (2) is dimethyl carbonate, ethyl methyl carbonate, diethyl carbonate or propylene carbonate.
7. The long-term storage system of 1, 3-propane sultone according to claim 6, characterized in that the raw material tank (1), the organic solvent tank (2), the mixing tank (3) and the storage tank (4) are all placed in a light-shielded thermostatic chamber, and the temperature in the thermostatic chamber is controlled to be 33-35 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922266118.XU CN211282242U (en) | 2019-12-17 | 2019-12-17 | Long-term storage system of 1, 3-propane sultone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922266118.XU CN211282242U (en) | 2019-12-17 | 2019-12-17 | Long-term storage system of 1, 3-propane sultone |
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| CN211282242U true CN211282242U (en) | 2020-08-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602387A (en) * | 2022-03-24 | 2022-06-10 | 福建省龙德新能源有限公司 | Automatic control method of LiF/anhydrous HF mixed production device |
| CN115215004A (en) * | 2022-07-29 | 2022-10-21 | 武汉松石科技股份有限公司 | Method for storing and taking high-purity anhydrous alkyl sultone |
-
2019
- 2019-12-17 CN CN201922266118.XU patent/CN211282242U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114602387A (en) * | 2022-03-24 | 2022-06-10 | 福建省龙德新能源有限公司 | Automatic control method of LiF/anhydrous HF mixed production device |
| CN115215004A (en) * | 2022-07-29 | 2022-10-21 | 武汉松石科技股份有限公司 | Method for storing and taking high-purity anhydrous alkyl sultone |
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