CN219291378U - Fluorination reactor for synthesizing difluoro sulfimide - Google Patents

Fluorination reactor for synthesizing difluoro sulfimide Download PDF

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Publication number
CN219291378U
CN219291378U CN202320195702.4U CN202320195702U CN219291378U CN 219291378 U CN219291378 U CN 219291378U CN 202320195702 U CN202320195702 U CN 202320195702U CN 219291378 U CN219291378 U CN 219291378U
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micro
material tank
reactor
fluorination reactor
reaction system
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沈寒晰
张金峰
郑阿龙
白燕
刘彦婷
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Shaanxi Chemical Research Institute Co ltd
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Shaanxi Chemical Research Institute Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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Abstract

The utility model discloses a fluorination reactor for synthesizing difluoro sulfimide, which comprises a material tank, a gas cylinder, a micro-reaction system, a flow-flattening pump and a gas flow meter, wherein the material tank is connected with an inlet of the micro-reaction system; the micro-reaction system comprises a micro-mixer and a micro-reactor which are sequentially connected, and the micro-mixer and the micro-reactor are connected with a constant temperature system. The fluorination reactor provided by the utility model overcomes the defects of a kettle type reactor, is easy to control, high in safety, capable of accurately controlling the reaction temperature, low in heat loss and energy-saving.

Description

Fluorination reactor for synthesizing difluoro sulfimide
Technical Field
The utility model belongs to the technical field of preparation of difluoro-sulfonyl imide, and particularly relates to a fluorination reactor for synthesizing difluoro-sulfonyl imide.
Background
Lithium bis (fluorosulfonyl) imide (LiFSI) is an electrolyte substance with wide application prospect, and the LiFSI has proper conductivity and high thermal stability and electrochemical stability; the probability of side reaction is small, and corrosive gases such as hydrogen fluoride and the like are not generated, so that the electrolyte is an indispensable high-technology product in the current lithium ion secondary battery electrolyte. With the continuous development of the lithium battery industry, the market demand of the lithium battery is increasing.
Bis (fluorosulfonyl) imide (HFSI) is an important intermediate for the preparation of lithium bis (fluorosulfonyl) imide, usually prepared by fluorination of bis (chlorosulfonyl) imide, and isolated. The fluorination reaction belongs to a dangerous chemical process, needs to be monitored with emphasis, is commonly used at present as a kettle type reactor, has large once-adding amount of hydrogen fluoride, needs to closely monitor the concentration, and has high safety risk.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a fluorination reactor for synthesizing difluoro sulfonyl imide, which can be used for a small amount of reactants and a large amount of reactants, has high reaction speed and high efficiency, and is suitable for industrialized continuous synthesis of difluoro sulfonyl imide.
The fluorination reactor for synthesizing the difluoro sulfimide comprises a material tank and a gas cylinder, and further comprises a micro-reaction system, wherein the material tank is connected with an inlet of the micro-reaction system through a advection pump, the inlet of the micro-reaction system is also connected with the gas cylinder through a gas flowmeter, an outlet of the micro-reaction system is connected with a separation tower, the top end of the separation tower is connected with an absorption tank, and the lower end of the separation tower is connected with a liquid storage tank;
the micro-reaction system comprises a micro-mixer and a micro-reactor which are sequentially connected, and the micro-mixer and the micro-reactor are connected with a constant temperature system.
Preferably, the number of the micro-reactors is more than two, and the micro-reactors are connected in series, so that the reaction time can be prolonged, and the reaction yield can be improved.
Preferably, the micro-reaction system is provided with more than two groups which are connected in parallel, so that the processing capacity of materials can be increased, and the production efficiency can be improved.
Preferably, the micromixer is a jet dispersion micromixer.
Preferably, the inlet of the micromixer is provided with a dispersion membrane, and the dispersion membrane is 500-2000 mesh dispersion membrane.
Preferably, a temperature detector, a heating device and a cooling device are arranged in the constant temperature system; the reaction temperature is precisely controlled.
The utility model has the advantages that:
(1) The fluorination reactor provided by the utility model overcomes the defects of a kettle type reactor, is easy to control reaction, has high safety, can accurately control reaction temperature, has low heat loss and has the effect of energy conservation;
(2) The microreactor has a microchannel structure, so that the reaction can be effectively promoted due to the bullet flow effect, and the reaction speed is high;
(3) The length of the micro-channel in the micro-reactor can be adjusted, so that the reaction time is easy to control;
(4) And a advection pump is introduced, so that the flow and the speed of the fluid can be accurately controlled, the reaction can be accurately controlled, and the reaction efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of a fluorination reactor according to the present utility model;
wherein, 1-material jar, 2-gas cylinder, 3-advection pump, 4-gas flowmeter, 5-micromixer, 6-microreactor, 7-constant temperature system, 8-separator, 9-absorption tank, 10-liquid storage tank.
Detailed Description
Example 1
The fluorination reactor for synthesizing the difluoro sulfimide comprises a material tank 1, a gas cylinder 2 and a micro-reaction system, wherein the material tank is connected with an inlet of the micro-reaction system through a advection pump 3, the inlet of the micro-reaction system is also connected with the gas cylinder 2 through a gas flowmeter 4, an outlet of the micro-reaction system is connected with a separation tower 8 for gas-liquid separation, the top end of the separation tower 8 is connected with an absorption tank 9 for absorbing tail gas, and the lower end of the separation tower 8 is connected with a liquid storage tank 10;
the micro-reaction system comprises a micro-mixer 5 and a micro-reactor 6 which are sequentially connected, wherein the micro-mixer 5 and the micro-reactor 6 are connected with a constant temperature system 7.
Example 2
On the basis of the embodiment 1, the number of the micro-reactors 5 is more than two, and the micro-reactors are connected in series, so that the reaction time can be prolonged, and the reaction yield can be improved.
Example 3
On the basis of the embodiment 1 or the embodiment 2, more than two groups of micro-reaction systems are arranged and connected in parallel, so that the processing capacity of materials can be increased, and the production efficiency can be improved.
Preferably, in the present utility model, the micromixer 5 is a jet dispersion type micromixer.
The inlet of the micromixer 5 is provided with a dispersion membrane which is 500-2000 mesh dispersion membrane.
A temperature detector, a heating device and a cooling device are arranged in the constant temperature system 7; the reaction temperature is precisely controlled.
In the utility model, a micro-reaction system comprises a micro-mixer 5 and a micro-reactor 6, wherein the raw material of the bischlorosulfimide stored in a material tank 1 is conveyed to the micro-mixer 5 by a horizontal pump 3, the hydrogen fluoride gas stored in a gas cylinder 2 is conveyed to the micro-mixer 5, the hydrogen fluoride gas is sprayed and dispersed in the micro-mixer 5 and fully mixed, the hydrogen fluoride gas enters the micro-reactor 6 to react, the micro-mixer 5 and the micro-reactor 6 are both connected with a constant temperature system 7, the temperature of the reaction system is accurately controlled, the reacted feed liquid enters a separation tower 8 to carry out gas-liquid separation, the reaction tail gas enters an absorption tank 9, and the liquid is the target product of the bisfluorosulfonimide and enters a liquid storage tank 10 for standby.

Claims (6)

1. The utility model provides a synthesize fluorination reactor of difluoro sulfimide, includes material jar (1) and gas bottle (2), its characterized in that: the device comprises a material tank (1), a gas cylinder (2), a material tank (8), a material tank (9) and a material tank (1), wherein the material tank is connected with an inlet of the material tank through a advection pump (3), the inlet of the material tank is connected with the gas cylinder (2) through a gas flowmeter (4), an outlet of the material tank is connected with the material tank, the top end of the material tank is connected with an absorption tank (9), and the low end of the material tank is connected with a liquid storage tank (10);
the micro-reaction system comprises a micro-mixer (5) and a micro-reactor (6) which are sequentially connected, wherein the micro-mixer (5) and the micro-reactor (6) are both connected with a constant temperature system (7).
2. The fluorination reactor for synthesizing bis-fluorosulfonyl imide according to claim 1, wherein: the number of the microreactors (6) is more than two, and the microreactors are mutually connected in series.
3. The fluorination reactor for synthesizing bis-fluorosulfonyl imide according to claim 1 or 2, characterized in that: the micro-reaction system is provided with more than two groups which are connected in parallel.
4. The fluorination reactor for synthesizing bis-fluorosulfonyl imide according to claim 1, wherein: the micromixer (5) is a jet dispersion type micromixer.
5. The fluorination reactor for synthesizing bis-fluorosulfonyl imide according to claim 4, wherein: the inlet of the micromixer (5) is provided with a dispersion membrane, and the dispersion membrane is 500-2000 meshes.
6. The fluorination reactor for synthesizing bis-fluorosulfonyl imide according to claim 1, wherein: a temperature detector, a heating device and a cooling device are arranged in the constant temperature system (7).
CN202320195702.4U 2023-02-13 2023-02-13 Fluorination reactor for synthesizing difluoro sulfimide Active CN219291378U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320195702.4U CN219291378U (en) 2023-02-13 2023-02-13 Fluorination reactor for synthesizing difluoro sulfimide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320195702.4U CN219291378U (en) 2023-02-13 2023-02-13 Fluorination reactor for synthesizing difluoro sulfimide

Publications (1)

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CN219291378U true CN219291378U (en) 2023-07-04

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