Synthesizer for sulfuryl fluoride

Abstract

The utility model belongs to the technical field of synthesizing devices, and particularly relates to a synthesizing device of sulfuryl fluoride. The sulfuryl fluoride synthesizer comprises a reaction kettle (1), a condenser (2) and a venturi reactor (3), the reaction kettle (1) is connected with the condenser (2), two pipelines are arranged at the top of the reaction kettle (1), one pipeline is connected with the bottom of the venturi reactor (3), the other pipeline is connected with the side face of the venturi reactor (3), and the venturi reactor (3) is connected with the condenser (2). And a pipeline at the bottom of the reaction kettle (1) is connected with the top of the Venturi reactor (3). The utility model provides a sulfuryl fluoride synthesizer, which is suitable for liquid phase reaction, further improves the conversion rate of reaction, improves the purity and yield of products, and is small in toxic and side effects, low in risk and environment-friendly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of synthetic device, concretely relates to the synthetic device of sulfuryl fluoride. BACKGROUND

[0002] Sulfuryl fluoride (SO2F2) is a colorless and odorless gas at normal temperature and pressure, and has chemical inertness and is easy to decompose at high temperature. Sulfuryl fluoride is widely used in warehouses, cargo ships, containers, buildings, reservoir dams, termite control, and the control of overwintering pests in gardens and live tree boring pests, etc. due to its strong diffusion and penetration, broad-spectrum insecticidal, low dosage, low residual, fast insecticidal speed, short gas dispersion time, low temperature use, no effect on germination rate, and low toxicity. When sulfuryl fluoride is used as an insecticide, a fungicide, and a fumigant, it does not destroy the ozone layer of the atmosphere, so sulfuryl fluoride is widely used in these fields. In recent years, sulfuryl fluoride has been used as a raw material for synthesizing lithium bisfluorosulfonylimide. Lithium bisfluorosulfonylimide is a new type of lithium salt electrolyte material for lithium ion batteries with wide application prospects. In power batteries, it can improve the cycle performance and rate performance of power batteries. Therefore, sulfuryl fluoride also has a very good development prospect in the field of lithium ion batteries.

[0003] At present, the device for synthesizing sulfuryl fluoride still has the problems of high toxicity, high risk, and low reaction conversion rate.

[0004] For example, CN218795799U discloses a kind of sulfuryl fluoride micro-pipeline reactor with sulfur dioxide and fluorine gas to generate sulfuryl fluoride, and CN220811869U discloses a kind of sulfuryl fluoride generating device, in which sulfuryl chloride and hydrogen fluoride generate sulfuryl fluoride under gas phase conditions. The above devices are all suitable for gas phase reaction and involve the problem of high toxicity. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned defects of the prior art, provide a synthetic device for sulfuryl fluoride, which is suitable for liquid phase reaction, further improves the conversion rate of reaction, improves the purity and yield of product, has small toxic and side effects, small risk, and is friendly to the environment.

[0006] The synthetic device for sulfuryl fluoride comprises a reaction kettle, a condenser, and a Venturi reactor. The reaction kettle is connected with the condenser. The top of the reaction kettle is provided with two pipelines, one of which is connected with the bottom of the Venturi reactor, and the other of which is connected with the side of the Venturi reactor. The bottom pipeline of the reaction kettle is connected with the top of the Venturi reactor to realize complex gas-liquid circulation and reaction control.

[0007] Preferably, the reaction kettle is provided with a feed pipe, and the feed pipe is connected with the bottom of the reaction kettle to ensure that the reactants can be uniformly and quickly mixed.

[0008] Preferably, the inside of the reaction kettle is provided with a stirring device for continuously stirring the reactants during the reaction, promoting uniform reaction and improving reaction efficiency.

[0009] Preferably, the outer wall of the reaction kettle is provided with a jacket, and the temperature in the reaction kettle can be controlled by circulating medium in the jacket to meet the temperature requirements of different reaction stages.

[0010] Preferably, the condenser is provided with a condensing medium inlet pipe and a condensing medium outlet pipe for introducing and discharging condensing medium to effectively cool the gas after reaction.

[0011] Preferably, the top of the condenser is provided with a sulfuryl fluoride gas collecting pipe.

[0012] Preferably, the pipeline connecting the top of the reaction kettle and the side of the venturi reactor is a gas phase material feeding pipe for transporting the unreacted gas or byproduct to the venturi reactor for further mixing reaction.

[0013] Preferably, the pipeline connecting the bottom of the reaction kettle and the top of the venturi reactor is a circulating pipe, and the circulating pipe is provided with a circulating pump for driving the reaction liquid to circulate between the reaction kettle and the venturi reactor, thereby enhancing the reaction effect.

[0014] The synthesis device of sulfuryl fluoride adds hydrogen fluoride complex and acid binding agent into the reaction kettle, adds sulfuryl chloride into the reaction kettle in liquid phase, controls the stirring and temperature control of the reaction material, condenses the unreacted sulfuryl chloride and the generated intermediate product sulfuryl chloride fluoride through the condenser, and the venturi reactor carries out gas-liquid mixing reaction of the liquid phase material of the reaction kettle and the upper gas phase material, mainly to make the unreacted sulfuryl chloride and sulfuryl chloride fluoride further react with the hydrogen fluoride complex.

[0015] Compared with the prior art, the synthesis device of sulfuryl fluoride has the beneficial effects that:

[0016] The synthesis device of sulfuryl fluoride of the utility model realizes efficient mixing and reaction of the reactants by the introduction of the venturi reactor, improves the yield and purity of sulfuryl fluoride, realizes effective cooling and separation of the gas after reaction by the design of the condenser and the gas collecting pipe, and is convenient for subsequent processing and collection, realizes recycling of the unreacted gas by the design of the gas phase material feeding pipe and the circulating pipe, and reduces raw material consumption and environmental pollution. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic view of the synthesis device of sulfuryl fluoride of the utility model.

[0018] In the figure: 1, reaction kettle; 2, condenser; 3, Venturi reactor; 4, condensing medium inlet pipe; 5, feed pipe; 6, condensing medium outlet pipe; 7, sulfuryl fluoride gas collection pipe; 8, circulating pump; 9, circulating pipe; 10, gas phase material feed pipe; 11, stirring device; 12, jacket. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with specific embodiments.

[0020] As Figure 1 shown, the synthesis device of sulfuryl fluoride, comprising reaction kettle 1, condenser 2, Venturi reactor 3, the reaction kettle 1 is connected with condenser 2, the reaction kettle 1 top is provided with two pipe lines, one is connected with the bottom of Venturi reactor 3, another is connected with the side of Venturi reactor 3, the bottom pipe line of reaction kettle 1 is connected with the top of Venturi reactor 3, to realize complex gas-liquid circulation and reaction control.

[0021] The reaction kettle 1 is provided with feed pipe 5, and the feed pipe 5 is connected to the bottom of the reaction kettle 1, to ensure that the reactants can be uniformly and quickly mixed.

[0022] The reaction kettle 1 is provided with stirring device 11 inside, for continuously stirring the reactants during the reaction, promoting the uniform reaction, and improving the reaction efficiency.

[0023] The outer wall of the reaction kettle 1 is provided with jacket 12, and the temperature in the reaction kettle 1 can be controlled by the circulating medium in the jacket 12, to adapt to the temperature requirement of different reaction stages.

[0024] The condenser 2 is provided with condensing medium inlet pipe 4 and condensing medium outlet pipe 6, for feeding and discharging condensing medium, to realize effective cooling of the gas after reaction.

[0025] The top of the condenser 2 is provided with sulfuryl fluoride gas collection pipe 7.

[0026] The pipe line of the top of the reaction kettle 1 and the side of the Venturi reactor 3 is gas phase material feed pipe 10, for conveying the unreacted gas or byproduct to the Venturi reactor for further treatment or recycling.

[0027] The pipe line of the bottom pipe line of the reaction kettle 1 and the top of the Venturi reactor 3 is circulating pipe 9, and the circulating pump 8 is arranged on the circulating pipe 9, and the circulating pump 8 is arranged on the pipe line, to drive the reaction liquid to circulate between the reaction kettle 1 and the Venturi reactor 3, to enhance the reaction effect.

[0028] The utility model discloses a synthesis device of sulfuryl fluoride, adds hydrogen fluoride complex and acid binding agent in the reaction kettle 1, and the sulfuryl chloride is added to the reaction kettle material in liquid phase, and the stirring of reactant material is controlled and temperature control, the unreacted sulfuryl chloride and the generated intermediate product sulfuryl chloride fluoride are condensed through the condenser, and the liquid -gas mixed reaction of the liquid phase material of reaction kettle 1 and the upper gas phase material is carried out in venturi reactor 3, and the unreacted sulfuryl chloride and sulfuryl chloride fluoride and hydrogen fluoride complex are further reacted mainly.

[0029] The utility model generates sulfuryl fluoride, sulfuryl chloride fluoride and hydrogen chloride in the reaction kettle 1 to the complex of liquid phase sulfuryl chloride and hydrogen fluoride, and the salt is generated under the action of acid binding agent, and the part unreacted sulfuryl chloride generates sulfuryl chloride gas, and the gas generated in the reaction has sulfuryl fluoride, sulfuryl chloride fluoride and sulfuryl chloride, and is condensed after the action of condenser 2 and returns to the reaction kettle 1, and the unreacted sulfuryl chloride and sulfuryl chloride fluoride are further reacted to generate sulfuryl fluoride through the gas -liquid phase mixing of venturi reactor 3, and the reaction device of the utility model generates sulfuryl fluoride as gas.

[0030] Of course, the above content is only the preferred embodiment of the utility model, and can not be considered for limiting the scope of the embodiment of the utility model. The utility model also is not limited to the above example, and the equal change and improvement of the ordinary skill in the art within the essential range of the utility model, all should be attributed to the patent coverage range of the utility model.

Claims

1. An apparatus for the synthesis of sulfuryl fluoride, characterized by: The utility model relates to a reaction kettle (1), condenser (2), venturi reactor (3), the reaction kettle (1) be connected with condenser (2), the reaction kettle (1) top is provided with two pipelines, one is connected with venturi reactor (3) bottom, another is connected with the lateral surface of venturi reactor (3), the bottom pipeline of reaction kettle (1) is connected with the top of venturi reactor (3).

2. The apparatus for synthesis of sulfuryl fluoride according to claim 1, characterized in that: The reaction kettle (1) is provided with a feed pipe (5), and the feed pipe (5) is connected to the bottom of the reaction kettle (1).

3. The apparatus for synthesis of sulfuryl fluoride according to claim 1, wherein: The reaction kettle (1) is provided with a stirring device (11) inside.

4. The apparatus for synthesis of sulfuryl fluoride according to claim 1, wherein: The reaction kettle (1) is provided with a jacket (12) on the outer wall.

5. The apparatus for synthesis of sulfuryl fluoride according to claim 1, wherein: The condenser (2) is provided with a condensing medium inlet pipe (4) and a condensing medium outlet pipe (6).

6. The apparatus of claim 1, wherein: The top of the condenser (2) is provided with a sulfuryl fluoride gas collecting pipe (7).

7. The apparatus of claim 1, wherein: The top of the reaction kettle (1) is connected to the lateral surface of the venturi reactor (3) through a gas-phase material feeding pipe (10).

8. The apparatus of claim 1, wherein: The bottom pipeline of the reaction kettle (1) is connected to the top of the venturi reactor (3) through a circulating pipe (9), and the circulating pipe (9) is provided with a circulating pump (8).

Images