A process and device for synthesizing sulfuryl fluoride from sulfuryl chloride and fluoride
Through the reaction of sulfanyl chloride fluorine and hydrogen fluoride in a fixed bed reactor, combined with potassium hydrofluoride or sodium hydrofluoride catalyst, the problems of high cost and environmental pollution in the sulfanyl fluoride synthesis process are solved, and high purity and high yield sulfur are achieved The production of acyl fluoride simplifies the process flow and improves the value of industrial applications.
Patent Information
- Application Number
- CN202411310445.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2044-09-20
AI Technical Summary
The existing sulfuryl fluoride synthesis process has problems such as high production costs, environmental pollution and high catalyst costs, and the catalyst is prone to poisoning and has many by-products, which affects industrial application.
Thioyl chloride fluoride and hydrogen fluoride are used in a fixed bed reactor, potassium hydrofluoride or sodium hydrofluoride is used as a catalyst to control the reaction temperature and pressure, purify sulfuryl fluoride through multiple treatments, reduce by-products, and improve raw material utilization. Catalyst Reusable.
It reduces the production cost of sulfuryl fluoride, reduces environmental pollution, improves the utilization rate, purity and yield of raw materials, simplifies the process flow, reduces the three wastes, and has high industrial production value.
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Figure CN118851100B_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of chemical product synthesis, and particularly relates to a process and a device for synthesizing sulfuryl fluoride from sulfuryl chloride and fluoride. Background Art
[0002] Sulfuryl fluoride (SO2F2) is a colorless and odorless gas at room temperature and pressure. It is chemically inert and easily decomposed at high temperatures. Sulfuryl fluoride is increasingly widely used in warehouses, cargo ships, containers, buildings, reservoir dams, termite control, and control of overwintering garden pests and living tree stem-boring pests because of its strong diffusion permeability, broad-spectrum insecticide, low dosage, low residue, fast insecticide speed, short gas dissipation time, low temperature use, no effect on germination rate, and low toxicity. In addition, when sulfuryl fluoride is used as an insecticide, fungicide, and fumigant, it will not damage the ozone layer of the atmosphere and is environmentally friendly. In recent years, sulfuryl fluoride has begun to be used as a raw material for the synthesis of lithium bis(fluorosulfonyl)imide. Lithium bis(fluorosulfonyl)imide is a new type of lithium salt electrolyte material for lithium-ion batteries with broad application prospects. In power batteries, it can improve the cycle performance and rate performance of power batteries. Therefore, sulfuryl fluoride also has very good development prospects in the field of lithium-ion batteries.
[0003] At present, the synthesis process of sulfuryl fluoride mainly includes the following methods:
[0004] The first is the direct fluorination method, which uses sulfur dioxide and fluorine gas as raw materials, and synthesizes in the presence of hydrogen fluoride and alkali metal fluoride (such as potassium fluoride), with a reaction temperature of -60-50°C. Although this process has a high yield, the production cost of fluorine gas is relatively high under the current circumstances, making the production cost of sulfuryl fluoride too high and lacking market competitiveness.
[0005] The second is the anhydrous hydrogen fluoride process, which uses sulfur dioxide, chlorine, and anhydrous hydrofluoric acid as raw materials, and is synthesized under the action of a catalyst at a reaction temperature of 150-200°C. Side reactions mainly occur significantly at lower temperatures. This process has the characteristics of low raw material cost, mild reaction conditions, and simple process operation. It is currently widely used in industrial production, among which the catalyst is the key factor affecting the cost.
[0006] The third is the fluorosulfonic acid method. This process also has the problem that the main raw material fluorosulfonic acid is difficult to obtain and is highly corrosive. It has high requirements on the material of the reactor and is not suitable for industrial production.
[0007] The fourth is the direct fluorination method of sulfuryl chloride, in which sulfuryl chloride and hydrogen fluoride are reacted at a temperature of 100-150°C to generate sulfuryl fluoride under palladium-carbon catalyst conditions. This method has a high temperature, sulfuryl chloride is easily decomposed at 100°C, the palladium in the catalyst is easily poisoned, and the catalyst cost is high.
[0008] The fifth is the sulfuryl chloride and hydrogen fluoride complex method, which uses sulfuryl chloride and hydrogen fluoride amine complexes (such as triethylamine hydrogen fluoride, pyridine hydrogen fluoride) as raw materials, and then adds an acid binding agent to generate sulfuryl fluoride. This method has mild reaction conditions, involves acid binding agent recovery, has a high production cost, and produces a large amount of by-product salt.
[0009] CN1308014A discloses a disproportionation reaction of sulfuryl chloride fluoride, in which sulfuryl chloride fluoride is disproportionated under the catalysis of activated carbon at a temperature above 130°C to generate sulfuryl fluoride, sulfur dioxide and chlorine. The utilization rate of the raw materials for the disproportionation decomposition of sulfuryl chloride fluoride in this method is low, and highly toxic chlorine is generated. Summary of the invention
[0010] The technical problem to be solved by the present invention is to overcome the above-mentioned defects of the prior art and provide a process for synthesizing sulfuryl fluoride from sulfuryl chloride and fluoride, which uses less raw materials, is low in price, saves costs, reduces environmental pollution, and the catalyst used can be reused. The present invention also provides a device for synthesizing sulfuryl fluoride from sulfuryl chloride and fluoride.
[0011] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride of the present invention comprises the following steps: heating sulfuryl chloride fluoride and hydrogen fluoride, mixing them in a mixer, introducing them into a fixed bed reactor, adding a catalyst in the fixed bed reactor, reacting, condensing the generated mixed gas, returning the unreacted sulfuryl chloride fluoride and hydrogen fluoride to the mixer, removing hydrogen chloride from the gas containing sulfuryl fluoride and hydrogen chloride, washing with alkali, and drying to obtain sulfuryl fluoride.
[0012] The sulfuryl chloride fluoride and hydrogen fluoride are heated to 100°C-200°C respectively.
[0013] The molar ratio of sulfuryl chloride fluoride to hydrogen fluoride is (1:1.1)-(1:2.05).
[0014] The reaction parameters of the fixed bed reactor are: reaction temperature 100°C-200°C, pressure 0.1Mpa-1.0MPa, and reaction material residence time 0.1h-0.8h.
[0015] The usage amount of the catalyst is 30%-70% of the volume of the fixed bed reactor; the catalyst is one of potassium bifluoride and sodium bifluoride.
[0016] The condensation temperature is -10°C to (-30°C).
[0017] The device adopted in the process of synthesizing sulfuryl fluoride from sulfuryl chloride and fluoride comprises a mixer, a fixed bed reactor, a condenser, an acid removal tower, an alkali washing tower and a dryer, wherein the mixer is connected to the fixed bed reactor, the fixed bed reactor is connected to the condenser, the condenser is connected to the acid removal tower, the acid removal tower is connected to the alkali washing tower, and the alkali washing tower is connected to the dryer.
[0018] The dryer is connected to the compressor, and the compressor is connected to the steel cylinder.
[0019] The mixer is connected to the hydrogen fluoride heater and the sulfuryl chloride fluoride heater respectively.
[0020] The liquid outlet of the condenser is connected to the mixer inlet through a condensate pipeline; the liquid outlet of the acid removal tower is connected to a dilute hydrochloric acid pipeline.
[0021] The mixer is a static gas mixer; the fixed bed reactor is a single-stage axial adiabatic fixed bed reactor or a multi-stage axial adiabatic fixed bed reactor; the acid removal tower absorbs hydrogen chloride gas by falling film with water or dilute hydrochloric acid to generate hydrochloric acid; the alkali washing tower uses 2%-5% alkali solution to remove residual acid gas of sulfuryl fluoride gas; the dryer is an adsorption gas dryer, and the adsorbent is preferably 3A, 4A, 5A molecular sieve.
[0022] Specifically, the process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 100°C-200°C by a heater, mixed by a mixer according to a molar ratio of (1:1.1)-(1:2.05), and then enter a fixed bed reactor filled with 30%-70% of potassium bifluoride or other catalysts for reaction, and the reaction temperature is controlled to be 100°C-200°C, the pressure is 0.1Mpa-1.0MPa, and the residence time of the reaction materials is 0.1h-0.8h to generate Sulfuryl fluoride and hydrogen chloride mixed gas; after the mixed gas is condensed by a -10℃-(-30℃) condenser, the unreacted sulfuryl fluoride and hydrogen fluoride are returned to the mixer and then to the fixed bed reactor for reaction. The gas containing sulfuryl fluoride and hydrogen chloride enters the deacidification tower to remove the hydrogen chloride gas, and the hydrogen chloride reacts with water to generate dilute hydrochloric acid as a by-product; the sulfuryl fluoride gas is further purified by the alkaline washing tower and then dried in a dryer to remove moisture. The purified sulfuryl fluoride gas is compressed by a compressor and then filled into a sulfuryl fluoride cylinder.
[0023] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride of the present invention adopts sulfuryl chloride fluoride (chlorofluorosulfonyl) as a raw material, and the structural formula is: , combined with potassium bifluoride catalyst, further react to synthesize sulfuryl fluoride. The reaction formula is: SO2ClF+HF2 - =SO2F2+HCl+F - ; F - +HF=HF2 - .
[0024] Compared with the prior art, the present invention has the following beneficial effects:
[0025] (1) The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride of the present invention uses sulfuryl chloride fluoride to produce sulfuryl fluoride with a wide range of uses, which not only solves the problem of sulfuryl chloride fluoride utilization, but also avoids the limitation caused by the use of expensive and limited fluorine resources, thereby reducing environmental pollution.
[0026] (2) The synthesis device of the present invention is combined with the synthesis method to improve the utilization rate of raw materials, simplify the process, reuse the catalyst, use only one by-product, dilute hydrochloric acid, reduce the three wastes, and have a higher industrial production value.
[0027] (3) The sulfuryl fluoride synthesized by the present invention has high purity and high yield. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 The schematic diagram of the device for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride of the present invention is shown in FIG.
[0029] Figure 1 In: 1. mixer; 2. fixed bed reactor; 3. condenser; 4. acid removal tower; 5. alkali washing tower; 6. dryer; 7. compressor; 8. cylinder; 9. hydrogen fluoride heater; 10. sulfuryl chloride heater; 11. dilute hydrochloric acid pipeline; 12. condensate pipeline.
[0030] Figure 2 The gas chromatogram of the sulfuryl fluoride product of Example 1 is shown in FIG. DETAILED DESCRIPTION
[0031] The present invention will be further described below in conjunction with specific embodiments.
[0032] The raw materials and additives used in the following examples and comparative examples are all commercially available products.
[0033] like Figure 1 As shown, the device used in the process of synthesizing sulfuryl fluoride from sulfuryl chloride fluoride includes a mixer 1, a fixed bed reactor 2, a condenser 3, an acid removal tower 4, an alkali washing tower 5, and a dryer 6. The mixer 1 is connected to the fixed bed reactor 2, the fixed bed reactor 2 is connected to the condenser 3, the condenser 3 is connected to the acid removal tower 4, the acid removal tower 4 is connected to the alkali washing tower 5, and the alkali washing tower 5 is connected to the dryer 6.
[0034] The dryer 6 is connected to the compressor 7, and the compressor 7 is connected to the steel cylinder 8.
[0035] The mixer 1 is connected to a hydrogen fluoride heater 9 and a sulfuryl chloride fluoride heater 10 respectively.
[0036] The liquid outlet of the condenser 3 is connected to the inlet of the mixer 1 through a condensate pipeline 12; the liquid outlet of the acid removal tower 4 is connected to a dilute hydrochloric acid pipeline 11.
[0037] The mixer 1 is a static gas mixer; the fixed bed reactor 2 is a single-stage axial adiabatic fixed bed reactor or a multi-stage axial adiabatic fixed bed reactor; the acid removal tower 4 absorbs hydrogen chloride gas by falling film with water or dilute hydrochloric acid to generate hydrochloric acid; the alkali washing tower 5 removes residual acid gas of sulfuryl fluoride gas by 2%-5% alkali solution; the dryer 6 is an adsorption gas dryer, and the adsorbent is preferably 3A, 4A, 5A molecular sieve.
[0038] The following embodiments are all completed using the above device.
[0039] Example 1
[0040] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 150°C by a heater, mixed in a molar ratio of 1:1.1 by a mixer 1, and then enter a fixed bed reactor 2 filled with 50% potassium bifluoride catalyst for reaction, the reaction temperature is controlled at 150°C, the pressure is 0.5MPa, and the residence time of the reaction materials is 0.4h, to generate a mixed gas of sulfuryl fluoride and hydrogen chloride; after the mixed gas is condensed by a -20°C condenser 3, the unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer 1 and then to the fixed bed reactor 2 for reaction, the gas containing sulfuryl fluoride and hydrogen chloride enters the deacidification tower 4 to remove the hydrogen chloride gas, and the hydrogen chloride reacts with water to generate dilute hydrochloric acid as a by-product; the sulfuryl fluoride gas is further purified by an alkali washing tower 5, and then dried by a dryer 6 to remove moisture, and the purified sulfuryl fluoride gas is compressed by a compressor 7 and filled into a sulfuryl fluoride cylinder 8. The gas chromatogram for the purity detection of sulfuryl fluoride is shown as follows Figure 2 shown.
[0041] Example 2
[0042] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 140° C. by a heater, mixed in a molar ratio of 1:1.5 by a mixer 1, and then enter a fixed bed reactor 2 filled with 30% sodium bifluoride catalyst for reaction, the reaction temperature is controlled to be 100° C., the pressure is 0.1 MPa, and the reaction material residence time is 0.8 h to generate a mixed gas of sulfuryl fluoride and hydrogen chloride; after the mixed gas is condensed by a -20° C. condenser 3, unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer 1 and then to the fixed bed reactor 2 for reaction, the gas containing sulfuryl fluoride and hydrogen chloride enters an acid removal tower 4 to remove hydrogen chloride gas, and hydrogen chloride reacts with water to generate by-product dilute hydrochloric acid; after the sulfuryl fluoride gas is further purified by an alkali washing tower 5, it is dried by a dryer 6 to remove moisture, and the purified sulfuryl fluoride gas is compressed by a compressor 7 and filled into a sulfuryl fluoride cylinder 8.
[0043] Example 3
[0044] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 200° C. by a heater, mixed in a molar ratio of 1:2.05 by a mixer 1, and then enter a fixed bed reactor 2 filled with 70% potassium bifluoride catalyst for reaction, the reaction temperature is controlled to be 200° C., the pressure is 0.1 MPa, and the residence time of the reaction materials is 0.1 h, to generate a mixed gas of sulfuryl fluoride and hydrogen chloride; after the mixed gas is condensed by a -30° C. condenser 3, unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer 1 and then to the fixed bed reactor 2 for reaction, the gas containing sulfuryl fluoride and hydrogen chloride enters an acid removal tower 4 to remove hydrogen chloride gas, and hydrogen chloride reacts with water to generate by-product dilute hydrochloric acid; after the sulfuryl fluoride gas is further purified by an alkali washing tower 5, it is dried by a dryer 6 to remove moisture, and the purified sulfuryl fluoride gas is compressed by a compressor 7 and filled into a sulfuryl fluoride cylinder 8.
[0045] Example 4
[0046] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 100° C. by a heater, mixed in a molar ratio of 1:2 by a mixer 1, and then enter a fixed bed reactor 2 filled with 50% potassium bifluoride catalyst for reaction, the reaction temperature is controlled to be 100° C., the pressure is 0.8 MPa, and the reaction material residence time is 0.6 h to generate a mixed gas of sulfuryl fluoride and hydrogen chloride; after the mixed gas is condensed by a -10° C. condenser 3, unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer 1 and then to the fixed bed reactor 2 for reaction, the gas containing sulfuryl fluoride and hydrogen chloride enters an acid removal tower 4 to remove hydrogen chloride gas, and hydrogen chloride reacts with water to generate by-product dilute hydrochloric acid; after the sulfuryl fluoride gas is further purified by an alkali washing tower 5, it is dried by a dryer 6 to remove moisture, and the purified sulfuryl fluoride gas is compressed by a compressor 7 and filled into a sulfuryl fluoride cylinder 8.
[0047] Comparative Example 1
[0048] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 150° C. by a heater, mixed in a molar ratio of 1:1.1 by a mixer 1, and then enter a fixed bed reactor 2 not filled with a catalyst for reaction, the reaction temperature is controlled to be 150° C., the pressure is 0.5 MPa, and the residence time of the reaction materials is 0.4 h, to generate a mixed gas of sulfuryl fluoride and hydrogen chloride; after the mixed gas is condensed by a -20° C. condenser 3, unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer 1 and then to the fixed bed reactor 2 for reaction, the gas containing sulfuryl fluoride and hydrogen chloride enters an acid removal tower 4 to remove hydrogen chloride gas, and hydrogen chloride reacts with water to generate by-product dilute hydrochloric acid; after the sulfuryl fluoride gas is further purified by an alkali washing tower 5, it is dried by a dryer 6 to remove moisture, and the purified sulfuryl fluoride gas is compressed by a compressor 7 and filled into a sulfuryl fluoride steel cylinder 8.
[0049] Comparative Example 2
[0050] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 60° C. by a heater, mixed in a molar ratio of 1:1.1 by a mixer 1, and then enter a fixed bed reactor 2 filled with 50% potassium bifluoride catalyst for reaction, the reaction temperature is controlled to be 60° C., the pressure is 0.5 MPa, and the reaction material residence time is 0.4 h to generate a mixed gas of sulfuryl fluoride and hydrogen chloride; after the mixed gas is condensed by a -20° C. condenser 3, unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer 1 and then to the fixed bed reactor 2 for reaction, the gas containing sulfuryl fluoride and hydrogen chloride enters an acid removal tower 4 to remove hydrogen chloride gas, and hydrogen chloride reacts with water to generate by-product dilute hydrochloric acid; after the sulfuryl fluoride gas is further purified by an alkali washing tower 5, it is dried by a dryer 6 to remove moisture, and the purified sulfuryl fluoride gas is compressed by a compressor 7 and filled into a sulfuryl fluoride steel cylinder 8.
[0051] Comparative Example 3
[0052] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 150° C. by a heater, mixed in a molar ratio of 1:1.1 by a mixer 1, and then enter a fixed bed reactor 2 filled with 50% potassium bifluoride catalyst for reaction, the reaction temperature is controlled to be 150° C., the pressure is 0 MPa (the fixed bed is not pressurized), the reaction material residence time is 0.4 h, and a mixed gas of sulfuryl fluoride and hydrogen chloride is generated; after the mixed gas is condensed by a -20° C. condenser 3, unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer 1 and then to the fixed bed reactor 2 for reaction, the gas containing sulfuryl fluoride and hydrogen chloride enters an acid removal tower 4 to remove hydrogen chloride gas, and hydrogen chloride reacts with water to generate by-product dilute hydrochloric acid; after the sulfuryl fluoride gas is further purified by an alkali washing tower 5, it is dried by a dryer 6 to remove moisture, and the purified sulfuryl fluoride gas is compressed by a compressor 7 and filled into a sulfuryl fluoride steel cylinder 8.
[0053] Comparative Example 4
[0054] The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride comprises the following steps: sulfuryl chloride fluoride and hydrogen fluoride are heated to 150° C. by a heater, mixed in a molar ratio of 1:1.1 by a mixer 1, and then enter a fixed bed reactor 2 filled with 50% potassium bifluoride catalyst for reaction, the reaction temperature is controlled to be 150° C., the pressure is 0.5 MPa, and the reaction material residence time is 60 seconds to generate a mixed gas of sulfuryl fluoride and hydrogen chloride; after the mixed gas is condensed by a -20° C. condenser 3, unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer 1 and then to the fixed bed reactor 2 for reaction, the gas containing sulfuryl fluoride and hydrogen chloride enters an acid removal tower 4 to remove hydrogen chloride gas, and hydrogen chloride reacts with water to generate by-product dilute hydrochloric acid; after the sulfuryl fluoride gas is further purified by an alkali washing tower 5, it is dried by a dryer 6 to remove moisture, and the purified sulfuryl fluoride gas is compressed by a compressor 7 and filled into a sulfuryl fluoride steel cylinder 8.
[0055] The purity of the sulfuryl fluoride prepared in the above examples and comparative examples was measured by gas chromatography, and the yield was calculated. The yield was calculated as (mol amount of sulfuryl fluoride generated / mol amount of sulfuryl chloride added)×100%. The test results are shown in Table 1.
[0056] Table 1 Test results
[0057]
[0058] As can be seen from the above, the sulfuryl fluoride synthesized by the process of the present invention has not only high purity but also high yield. However, when there is no catalyst in Comparative Example 1, the reaction yield is the lowest at 8.12%, which has the greatest impact. In Comparative Example 2, changing the reaction temperature has a great impact on the reaction, and the reaction yield at 60°C is 15.10%. In Comparative Example 3, changing the reaction pressure has a great impact on the reaction, and the reaction yield at normal pressure is 20.58%. In Comparative Example 4, changing the reaction time has a great impact on the reaction, and the reaction yield for 60s is 30.07%.
Claims
1. A process for synthesizing sulfuryl fluoride from sulfuryl chloride and fluoride, Features: The sulfuryl chloride fluoride and hydrogen fluoride are heated and mixed in a mixer, and then introduced into a fixed bed reactor, a catalyst is added in the fixed bed reactor, and a reaction is carried out, and the generated mixed gas is condensed, and the unreacted sulfuryl chloride fluoride and hydrogen fluoride are returned to the mixer, and the gas containing sulfuryl fluoride and hydrogen chloride is subjected to alkali washing and drying after hydrogen chloride is removed, so as to obtain sulfuryl fluoride; The reaction parameters of the fixed bed reactor are: reaction temperature 100°C-200°C, pressure 0.1MPa-1.0MPa, and reaction material residence time 0.1h-0.8h; The usage amount of the catalyst is 30%-70% of the volume of the fixed bed reactor; the catalyst is one of potassium bifluoride and sodium bifluoride; The device for synthesizing sulfuryl fluoride from sulfuryl chloride and fluoride comprises a mixer (1), a fixed bed reactor (2), a condenser (3), an acid removal tower (4), an alkali washing tower (5), and a dryer (6). The mixer (1) is connected to the fixed bed reactor (2), the fixed bed reactor (2) is connected to the condenser (3), the condenser (3) is connected to the acid removal tower (4), the acid removal tower (4) is connected to the alkali washing tower (5), and the alkali washing tower (5) is connected to the dryer (6).
2. The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride according to claim 1, Features: The sulfuryl chloride fluoride and hydrogen fluoride are heated to 100°C-200°C respectively.
3. The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride according to claim 1, Features: The molar ratio of sulfuryl chloride fluoride to hydrogen fluoride is (1:1.1)-(1:2.05).
4. The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride according to claim 1, Features: The condensation temperature is -10°C to (-30°C).
5. The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride according to claim 1, Features: The dryer (6) is connected to the compressor (7), and the compressor (7) is connected to the steel cylinder (8).
6. The process for synthesizing sulfuryl fluoride from sulfuryl chloride fluoride according to claim 1, Features: The mixer (1) is connected to a hydrogen fluoride heater (9) and a sulfuryl chloride heater (10) respectively.
7. The process for synthesizing sulfuryl fluoride from sulfuryl chloride and fluoride according to claim 1, Features: The liquid outlet of the condenser (3) is connected to the inlet of the mixer (1) via a condensate pipeline (12); and the liquid outlet of the acid removal tower (4) is connected to a dilute hydrochloric acid pipeline (11).