CN114620687A - Continuous production method and application of iodine pentafluoride - Google Patents
Continuous production method and application of iodine pentafluoride Download PDFInfo
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Abstract
The invention discloses a continuous production method of iodine pentafluoride and application thereof, comprising the steps of continuously adding iodine into a closed mixer which is filled with inert gas and is filled with liquid mixture of antimony pentafluoride and iodine pentafluoride, and controlling the content of iodine in the mixture to be 10-18 wt%; and (2) enabling the mixture to circularly flow in a closed mixer and a closed reactor with a multi-channel gas inlet pipe arranged at the top, controlling the temperature of the mixture in the closed reactor to be 105-120 ℃, blowing the mixed gas of fluorine gas and inert gas into the surface of the liquid from the multi-channel gas inlet pipe, controlling the distance between the gas inlet of the multi-channel gas inlet pipe and the liquid level in the reactor to be 30-50mm, and continuously extracting the product gas obtained by reaction from the gas outlet arranged at the top of the reactor and carrying out post-treatment. The invention inhibits the strong heat release of the reaction by buffering the reaction system and circularly cooling the reaction system, thereby improving the yield; the reaction mass transfer efficiency is increased by using a multi-channel air inlet pipe; realize continuous feeding and output.
Description
Technical Field
The invention belongs to the technical field of iodine pentafluoride production, and particularly relates to a continuous production method of iodine pentafluoride and application thereof.
Background
Iodine pentafluoride has stronger oxidability and fluoridation capability, is the most widely used raw material for producing fluorine-containing surfactant and oil-proof and water-proof textile treating agent at present, is also used as a semiconductor etching agent, a mild fluoridation agent, a raw material for synthesizing fluorine-containing surfactant and a fluorine-containing textile finishing agent in the electronic industry, and has wide application in electronics, chemical synthesis and aerospace aviation.
In the prior art, the preparation method of iodine pentafluoride mainly comprises the following steps:
chinese patent application publication No. CN101528593 discloses a method for producing iodine pentafluoride, and specifically provides a method for producing iodine pentafluoride which can avoid the problems of the conventional methods for producing iodine pentafluoride as much as possible, smoothly carry out the reaction between fluorine and iodine, and as a result, can produce iodine pentafluoride more safely and with more excellent productivity; in a process for producing iodine pentafluoride by reacting fluorine and iodine, iodine is supplied to a gas phase adjacent to a liquid phase of iodine pentafluoride containing iodine, and the resulting liquid-phase iodine pentafluoride is continuously or intermittently taken out from a reactor.
Chinese patent application publication No. CN101920937A discloses a method and a reaction apparatus for preparing iodine pentafluoride, and specifically discloses a method for preparing iodine pentafluoride, which can perform continuous reaction, has high yield, mild reaction, complete reaction and extremely low pollution degree, wherein solid iodine is placed above a liquid iodine pentafluoride or iodine pentafluoride solution, fluorine gas is introduced into the liquid iodine pentafluoride or iodine pentafluoride solution, and iodine pentafluoride generated by the reaction between the solid iodine and fluorine dissolves part of iodine and then flows into the liquid iodine pentafluoride or iodine pentafluoride solution, and a reaction apparatus dedicated to the method.
The Chinese patent application with publication number CN102556974A discloses a method for continuously preparing iodine pentafluoride, which specifically adopts a multi-stage tower reactor series process flow, and the number of towers can be 1-N (N is more than or equal to 3) according to the process requirement; under the atmosphere containing sulfonyl fluoride RfSO2F, iodine pentafluoride solution and fluorine gas or fluorine-nitrogen mixed gas enter a multi-stage reaction tower from two ends respectively to flow in the reverse direction to react.
The chinese patent application with publication number CN104326443A discloses a preparation method and production equipment of iodine pentafluoride, the preparation method comprises: 1) adding iodine pentafluoride and molten iodine into a first reaction kettle and a second reaction kettle respectively to form a mixed system, 2) introducing fluorine-nitrogen mixed gas into the first reaction kettle, introducing the residual mixed gas after reaction into the second reaction kettle to react, and then discharging the residual gas, 3) discharging the generated iodine pentafluoride after the reaction in the first reaction kettle is finished, and then preparing the mixed system, 4) introducing fluorine-nitrogen mixed gas into the second reaction kettle, introducing the residual mixed gas into the first reaction kettle to react, and then discharging the residual gas, 5) discharging the generated iodine pentafluoride after the reaction in the second reaction kettle is finished, and then preparing the mixed system, and 6) repeating the operations of the steps 2) to 5); the preparation method of the invention realizes the continuous production of iodine pentafluoride, improves the utilization rate of raw materials, has stable quality and high yield of the obtained product, and simultaneously avoids the waste of fluorine resources and environmental pollution.
The above-mentioned preparation methods have more or less the following problems: (1) in order to relieve the violent exothermic effect in the reaction process, the reaction rate is often controlled by low reaction temperature (10-50 ℃), which results in low unit production capacity; (2) the reactant (iodine) and the product (iodine pentafluoride) are mixed in a liquid phase form, the components of a reaction system need to be continuously monitored to determine a reaction end point, the separation is difficult, and the reaction process is difficult to continuously carry out; (3) the product purity is not high, and the high-purity product can be obtained only by subsequent refining treatment.
Therefore, it is urgently needed to provide an efficient continuous production process of high-purity iodine pentafluoride, so as to solve the problems of poor reaction speed, difficult separation, low purity and the like in the prior art for producing iodine pentafluoride.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a continuous production method of iodine pentafluoride and application thereof, which is characterized in that reaction heat release is inhibited by a buffer reaction system and a reaction system circulating cooling method, a reaction product is separated by a gas phase, and a high-purity product is adopted as a condensing medium to avoid pollution, so that the high-purity product is directly obtained.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a continuous process for the production of iodine pentafluoride comprising:
continuously adding iodine into a closed mixer which is filled with inert gas and is filled with liquid mixture of antimony pentafluoride and iodine pentafluoride at 50-70 ℃, and controlling the content of iodine in the mixture to be 10-18 wt%;
and (2) enabling the mixture to circularly flow in a closed mixer and a closed reactor with a multi-channel gas inlet pipe arranged at the top, controlling the temperature of the mixture in the closed reactor to be 105-120 ℃, blowing the mixed gas of fluorine gas and inert gas into the surface of the liquid from the multi-channel gas inlet pipe, controlling the distance between a gas inlet of the multi-channel gas inlet pipe and the liquid level in the reactor to be 30-50mm, and continuously extracting the product gas obtained by the reaction from a gas outlet arranged at the top of the reactor and carrying out aftertreatment.
In the technical scheme, the mass ratio of antimony pentafluoride to iodine pentafluoride in the liquid mixture is 0.5-1.5: 1.
Preferably, in the above technical solution, the purity of both the antimony pentafluoride and the iodine pentafluoride is greater than 99.5 wt%.
In the technical scheme, the temperature of the mixed gas is 70-90 ℃, and the content of fluorine gas in the mixed gas is 10-15 v%.
In the above technical solution, the number of the air inlets of the multi-channel air inlet pipe which are arranged downwards is 5-12/(m)2 Cross-sectional area of the closed reactor)。
In the technical scheme, the product gas is continuously extracted from the gas outlet arranged at the top of the reactor by adopting micro negative pressure of 40-80 kPa.
Further, in the above technical solution, the closed mixer and the closed reactor are both rectangular parallelepiped structures with a length of 1.8-2.5m, a width of 1.0-1.2m, and a height of 0.6-0.9 m.
In detail, in one embodiment of the invention, the addition amount of the iodine is 30-100Kg/h, the liquid level height of the mixture in the closed reactor is 450-550mm, and the blowing amount of the mixed gas is 120-350L/h.
Still further, in the above technical solution, the post-processing includes:
keeping the temperature of the product gas at 120-140 ℃, introducing the product gas from the bottom of the first collector through a pipeline, performing countercurrent spray washing by using liquid iodine pentafluoride (20-30 ℃) with the content of more than 99.5 wt% introduced from the top of the first collector, cooling the gas to 90-105 ℃, condensing the contained antimony pentafluoride and iodine pentafluoride, introducing the condensed antimony pentafluoride and iodine pentafluoride into washing liquid, then leading out the washing liquid through a liquid outlet at the bottom of the first collector, and refluxing the washing liquid into the sealed reactor;
introducing tail gas in the first collector from the bottom of the second collector through a pipeline, performing countercurrent spray washing by using liquid iodine pentafluoride with the content of more than 99.5 wt% introduced from the top of the second collector, cooling the gas to 20-30 ℃, condensing the contained iodine pentafluoride, then leading out the condensed iodine pentafluoride through a liquid outlet at the bottom of the second collector, discharging one part of the condensed iodine pentafluoride as an iodine pentafluoride product, returning the rest of the condensed iodine pentafluoride to the top of the first collector for countercurrent spray washing, combining the tail gas in the second collector with mixed gas of fluorine gas and inert gas through the pipeline, and then blowing the combined tail gas into the surface of liquid in the closed reactor.
In a preferred embodiment of the present invention, the first collector and the second collector are both cylindrical structures with an inner diameter of 600-.
In detail, in another embodiment of the present invention, the iodine pentafluoride product is emitted in a yield of 50 to 170 kg/h.
In detail, in the embodiment of the invention, the purity of the iodine pentafluoride product can reach more than 99.95 wt%, and the yield of the iodine pentafluoride product is as high as 45 kg/(m)2 Cross sectional area of closed reactorH) above.
The invention also provides the application of the continuous production method of the iodine pentafluoride in preparing iodine pentafluoride (especially electronic grade iodine pentafluoride).
Compared with the prior art, the invention has the following advantages:
(1) the continuous production method of iodine pentafluoride provided by the invention inhibits the strong heat release process of the reaction process of fluorine gas and iodine through the buffer reaction system and the circulating cooling of the reaction system, so that the reaction process can be controllably operated at the temperature of more than 100 ℃, and the yield can reach 45 kg/(m)2 Cross-sectional area of the closed reactorH) above;
(2) in the continuous production method of iodine pentafluoride provided by the invention, the reaction mass transfer efficiency is increased by using the multi-channel air inlet pipe F2The conversion rate reaches more than 95 percent, and the tail gas is recycled;
(3) in the continuous production method of iodine pentafluoride provided by the invention, reaction gas reacts on the surface of a liquid mixture, and products are separated in a gas form, so that continuous feeding and output can be realized;
(4) the iodine pentafluoride product prepared by the continuous production method of iodine pentafluoride provided by the invention has high purity, and IF in the product5The content of (A) can reach more than 99.95 wt%.
Drawings
FIG. 1 is a process flow diagram for the continuous production of iodine pentafluoride in an embodiment of the present invention;
FIG. 2 is an enlarged view of a part of a closed reactor used in the example of the present invention;
in the figure:
a closed mixer 1, a closed reactor 2, a first collector 3 and a second collector 4.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the examples, the means used are conventional in the art unless otherwise specified.
The terms "comprises," "comprising," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
A continuous production method of iodine pentafluoride, as shown in fig. 1, specifically comprising:
(1) antimony pentafluoride and iodine pentafluoride with the purity of more than 99.8 wt% are mixed according to the mass ratio of 0.5: 1 is added into a closed mixer 1 with a cuboid structure with the length of 1.8m, the width of 1.0m and the height of 0.6m, nitrogen is filled in the closed mixer 1 for protection, the temperature of the mixture of antimony pentafluoride and iodine pentafluoride is controlled to be 50 ℃, the mixture of the antimony pentafluoride and the iodine pentafluoride is melted into liquid, iodine with the purity of more than 99 wt% is continuously added into the liquid mixture of the antimony pentafluoride and the iodine pentafluoride in the closed mixer at the speed of 30Kg/h from a sealed feed inlet arranged at the top of the closed mixer 1, and the content of the iodine in the mixture is controlled to be 18 wt%;
(2) continuously introducing the mixture in the closed mixer 1 into a closed reactor 2 with a cuboid structure with the length of 1.8m, the width of 1.0m and the height of 0.6m, controlling the temperature of the mixture in the closed reactor 2 to be 105 ℃, communicating the closed mixer 1 with the closed reactor 2 through a pipeline, enabling the mixture to circularly flow in the closed mixer 1 and the closed reactor 2, controlling the liquid level height of the mixture in the closed reactor 2 to be 450mm, blowing mixed gas of fluorine gas and nitrogen gas (the volume ratio is 10: 90, the temperature is 70 ℃) into the surface of liquid from a multi-channel gas inlet pipe arranged at the top of the closed reactor 2 at the speed of 137L/h, wherein the number of downwards arranged gas inlets of the multi-channel gas inlet pipe is 5/(m2 Cross sectional area of closed reactor) Controlling the distance between the air inlet of the multi-channel air inlet pipe and the liquid level in the closed reactor 2 to be 30mm (as shown in figure 2), and simultaneously continuously extracting the product gas obtained by reaction from an air outlet arranged at the top of the closed reactor 2 by adopting 40kPa micro negative pressure;
(3) keeping the product gas at 120 ℃, leading the product gas into a first collector 3 with a cylindrical structure with the inner diameter of 600mm and the height of 2000mm from the bottom through a pipeline, leading liquid iodine pentafluoride (30 ℃) with the content of more than 99.96 wt% from the top of the first collector 3, reducing the temperature of the product gas to 90 ℃ through countercurrent spray washing, condensing antimony pentafluoride and iodine pentafluoride contained in the product gas, leading the antimony pentafluoride and the iodine pentafluoride into washing liquid, leading the washing liquid out through a liquid outlet at the bottom of the first collector 3, and then refluxing the washing liquid into a closed reactor 2;
(4) leading tail gas in the first collector 3 into the bottom of the second collector 4 through a pipeline, leading liquid iodine pentafluoride with the content of more than 99.96 wt% into the top of the second collector 4, cooling the gas to 20 ℃ through countercurrent spray washing, condensing the contained iodine pentafluoride, and then leading out the iodine pentafluoride through a liquid outlet in the bottom of the second collector 4, wherein the tail gas is discharged as an iodine pentafluoride product at the flow rate of 50Kg/h, returning the rest part to the top of the first collector 3 for countercurrent spray washing, and blowing the tail gas in the second collector 4 into the surface of liquid in the closed reactor 2 after being combined with mixed gas of fluorine gas and inert gas (nitrogen) through a pipeline.
The detection and calculation result shows that the productivity of the reactor is 46 kg/(m)2 Cross sectional area of closed reactorH), wherein: the mass fraction of the iodine pentafluoride product was 99.96 wt%, and the conversion of fluorine gas was 97.1%.
Example 2
A continuous production method of iodine pentafluoride, similar to example 1, specifically comprising:
(1) antimony pentafluoride and iodine pentafluoride with the purity of more than 99.5 wt% are mixed according to the mass ratio of 1.5: 1 is added into a closed mixer 1 with a cuboid structure with the length of 2.5m, the width of 1.2m and the height of 0.9m, nitrogen is filled in the closed mixer 1 for protection, the temperature of the mixture of antimony pentafluoride and iodine pentafluoride is controlled to be 70 ℃, the mixture of the antimony pentafluoride and the iodine pentafluoride is melted into liquid, iodine with the purity of more than 99 wt% is continuously added into the liquid mixture of the antimony pentafluoride and the iodine pentafluoride in the closed mixer at the speed of 100Kg/h from a sealed feed inlet arranged at the top of the closed mixer 1, and the content of the iodine in the mixture is controlled to be 10 wt%;
(2) continuously introducing the mixture in the closed mixer 1 into a closed reactor 2 with a cuboid structure with the length of 2.5m, the width of 1.2m and the height of 0.9m, controlling the temperature of the mixture in the closed reactor 2 to be 120 ℃, communicating the closed mixer 1 with the closed reactor 2 through a pipeline, enabling the mixture to circularly flow in the closed mixer 1 and the closed reactor 2, controlling the liquid level height of the mixture in the closed reactor 2 to be 550mm, blowing a mixed gas of fluorine gas and nitrogen gas (the volume ratio is 15: 85 and the temperature is 90 ℃) to the surface of liquid from a multi-channel gas inlet pipe arranged at the top of the closed reactor 2 at the speed of 310L/h, and blowing the number of gas inlets downwards arranged on the multi-channel gas inlet pipe into the surface of the liquidThe amount is 12/(m)2 Cross sectional area of closed reactor) Controlling the distance between the air inlet of the multi-channel air inlet pipe and the liquid level in the closed reactor 2 to be 50mm (as shown in figure 2), and simultaneously continuously extracting the product gas obtained by reaction from an air outlet arranged at the top of the closed reactor 2 by adopting 80kPa micro negative pressure;
(3) keeping the product gas at 140 ℃ and leading the product gas into a first collector 3 with a cylindrical structure with the inner diameter of 1000mm and the height of 3000mm from the bottom through a pipeline, leading liquid iodine pentafluoride (30 ℃) with the content of more than 99.92 wt% from the top of the first collector 3, reducing the temperature of the product gas to 105 ℃ through countercurrent spray washing, condensing antimony pentafluoride and iodine pentafluoride contained in the product gas into washing liquid, leading the antimony pentafluoride and the iodine pentafluoride out through a liquid outlet at the bottom of the first collector 3, and then refluxing the antimony pentafluoride and the iodine pentafluoride into a closed reactor 2;
(4) leading tail gas in the first collector 3 into the bottom of the second collector 4 through a pipeline, leading liquid iodine pentafluoride with the content of more than 99.92 wt% into the top of the second collector 4, cooling the gas to 30 ℃ through countercurrent spray washing, condensing the contained iodine pentafluoride, and then leading out the iodine pentafluoride through a liquid outlet in the bottom of the second collector 4, wherein the tail gas is discharged as an iodine pentafluoride product at the flow rate of 170Kg/h, returning the rest part to the top of the first collector 3 for countercurrent spray washing, and blowing the tail gas in the second collector 4 into the surface of liquid in the closed reactor 2 after being combined with mixed gas of fluorine gas and inert gas (nitrogen) through a pipeline.
Through detection and calculation, the productivity of the reactor is 63 kg/(m)2 Cross sectional area of closed reactorH), wherein: the mass fraction of the iodine pentafluoride product was 99.92 wt%, and the conversion of fluorine gas was 95.1%.
Example 3
A continuous production method of iodine pentafluoride, similar to example 1, specifically comprising:
(1) antimony pentafluoride and iodine pentafluoride with the purity of more than 99.6 wt% are added into a closed mixer 1 with a cuboid structure with the length of 2m, the width of 1m and the height of 0.75m according to the mass ratio of 1: 1, nitrogen is filled in the closed mixer 1 for protection, the temperature of the mixture of the antimony pentafluoride and the iodine pentafluoride is controlled to be 60 ℃, the mixture of the antimony pentafluoride and the iodine pentafluoride is melted into a liquid state, iodine with the purity of more than 99 wt% is continuously added into the liquid mixture of the antimony pentafluoride and the iodine pentafluoride in the closed mixer from a sealed feeding port arranged at the top of the closed mixer 1 according to the speed of 60Kg/h, and the content of the iodine in the mixture is controlled to be 15 wt%;
(2) continuously introducing the mixture in the closed mixer 1 into a closed reactor 2 with a cuboid structure with the length of 2m, the width of 1.1m and the height of 0.75m, controlling the temperature of the mixture in the closed reactor 2 to be 110 ℃, communicating the closed mixer 1 with the closed reactor 2 through a pipeline, enabling the mixture to circularly flow in the closed mixer 1 and the closed reactor 2, controlling the liquid level height of the mixture in the closed reactor 2 to be 500mm, blowing a mixed gas of fluorine gas and nitrogen gas (the volume ratio is 12: 88 and the temperature is 80 ℃) from a multi-channel gas inlet pipe arranged at the top of the closed reactor 2 to the surface of liquid at the speed of 230L/h, wherein the number of the downwardly arranged gas inlets of the multi-channel gas inlet pipe is 8/(m)2 Cross sectional area of closed reactor) Controlling the distance between the air inlet of the multi-channel air inlet pipe and the liquid level in the closed reactor 2 to be 35mm (as shown in figure 2), and simultaneously continuously extracting product gas obtained by reaction from an air outlet arranged at the top of the closed reactor 2 by adopting 80kPa micro negative pressure;
(3) keeping the product gas at 130 ℃ and leading the product gas into a first collector 3 with a cylindrical structure with the inner diameter of 800mm and the height of 2500mm from the bottom through a pipeline, leading liquid iodine pentafluoride (30 ℃) with the content of more than 99.95 weight percent into the first collector 3 from the top, reducing the temperature of the product gas to 95 ℃ through countercurrent spray washing, condensing antimony pentafluoride and iodine pentafluoride contained in the product gas into washing liquid, leading the washing liquid out through a liquid outlet at the bottom of the first collector 3, and then refluxing the washing liquid into a closed reactor 2;
(4) leading tail gas in the first collector 3 into the bottom of the second collector 4 through a pipeline, leading liquid iodine pentafluoride with the content of more than 99.95 wt% into the top of the second collector 4, cooling the gas to 25 ℃ through countercurrent spray washing, condensing the contained iodine pentafluoride, and then leading out the iodine pentafluoride through a liquid outlet in the bottom of the second collector 4, wherein the tail gas is discharged as an iodine pentafluoride product according to the flow of 100Kg/h, and the rest part returns to the top of the first collector 3 for countercurrent spray washing, and the tail gas in the second collector 4 is combined with mixed gas of fluorine gas and inert gas (nitrogen gas) through a pipeline and then is blown into the surface of liquid in the closed reactor 2.
Through detection and calculation, the productivity of the reactor is 61 kg/(m)2 Cross sectional area of closed reactorH), wherein: the mass fraction of the iodine pentafluoride product was 99.95 wt%, and the conversion of fluorine gas was 96%.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention.
It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. A continuous process for the production of iodine pentafluoride comprising:
continuously adding iodine into a closed mixer which is filled with inert gas and is filled with liquid mixture of antimony pentafluoride and iodine pentafluoride at 50-70 ℃, and controlling the content of iodine in the mixture to be 10-18 wt%;
and (2) enabling the mixture to circularly flow in a closed mixer and a closed reactor with a multi-channel gas inlet pipe arranged at the top, controlling the temperature of the mixture in the closed reactor to be 105-120 ℃, blowing the mixed gas of fluorine gas and inert gas into the surface of the liquid from the multi-channel gas inlet pipe, controlling the distance between a gas inlet of the multi-channel gas inlet pipe and the liquid level in the reactor to be 30-50mm, and continuously extracting the product gas obtained by the reaction from a gas outlet arranged at the top of the reactor and carrying out aftertreatment.
2. The continuous production process of iodine pentafluoride according to claim 1,
in the liquid mixture, the mass ratio of antimony pentafluoride to iodine pentafluoride is 0.5-1.5: 1;
preferably, the antimony pentafluoride and the iodine pentafluoride each have a purity of greater than 99.5 wt%.
3. The continuous production process of iodine pentafluoride according to claim 1,
the temperature of the mixed gas is 70-90 ℃, and the content of fluorine gas in the mixed gas is 10-15 v%;
and/or the number of the downward arranged air inlets of the multi-channel air inlet pipe is 5-12/(m)2 Cross sectional area of closed reactor)；
And/or the product gas is continuously extracted from a gas outlet arranged at the top of the reactor by using micro negative pressure of 40-80 kPa.
4. The continuous production process of iodine pentafluoride according to any one of claims 1 to 3, characterized in that,
the closed mixer and the closed reactor are both rectangular structures with the length of 1.8-2.5m, the width of 1.0-1.2m and the height of 0.6-0.9 m.
5. The continuous production process of iodine pentafluoride according to claim 4, characterized in that,
the addition amount of the iodine is 30-100Kg/h, the liquid level height of the mixture in the closed reactor is 450-550mm, and the blowing amount of the mixed gas is 120-350L/h.
6. The continuous production process of iodine pentafluoride according to any one of claims 1 to 5, characterized in that,
the post-processing comprises:
keeping the product gas at the temperature of 120-140 ℃, introducing the product gas from the bottom of the first collector through a pipeline, performing countercurrent spray washing by using liquid iodine pentafluoride with the content of more than 99.5 wt% introduced from the top of the first collector, cooling the gas to the temperature of 90-105 ℃, condensing the contained antimony pentafluoride and iodine pentafluoride, introducing the condensed antimony pentafluoride and iodine pentafluoride into washing liquid, and then leading out the washing liquid through a liquid outlet at the bottom of the first collector and refluxing the washing liquid into the closed reactor;
leading in the tail gas in the first collector from the bottom of the second collector through a pipeline, carrying out countercurrent spray washing by using liquid iodine pentafluoride with the content of more than 99.5 wt% led in from the top of the second collector, cooling the gas to 20-30 ℃, condensing the contained iodine pentafluoride, leading out the condensed iodine pentafluoride through a liquid outlet at the bottom of the second collector, discharging one part of the condensed iodine pentafluoride as an iodine pentafluoride product, returning the rest part of the condensed iodine pentafluoride product to the top of the first collector for countercurrent spray washing, combining the tail gas in the second collector with the mixed gas of fluorine gas and inert gas through a pipeline, and then blowing the combined gas on the surface of the liquid in the closed reactor.
7. The continuous production process of iodine pentafluoride according to claim 6,
the first collector and the second collector are both cylindrical structures with the inner diameter of 600 plus 1000mm and the height of 2000 plus 3000 mm.
8. The continuous production process of iodine pentafluoride according to claim 7, characterized in that,
the iodine pentafluoride product is discharged with a yield of 50-170 kg/h.
9. The continuous production process of iodine pentafluoride according to any one of claims 1 to 8, characterized in that,
the purity of the iodine pentafluoride product is more than 99.95 wt%, and the yield of the iodine pentafluoride product is as high as 45 kg/(m)2 Cross sectional area of closed reactorH) above.
10. Use of the continuous process for the production of iodine pentafluoride according to any one of claims 1 to 9 in the preparation of iodine pentafluoride.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114655982A (en) * | 2022-04-07 | 2022-06-24 | 九江诺尔新材料科技有限公司 | Continuous production method and application of antimony pentafluoride |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114655982A (en) * | 2022-04-07 | 2022-06-24 | 九江诺尔新材料科技有限公司 | Continuous production method and application of antimony pentafluoride |
| CN114655982B (en) * | 2022-04-07 | 2023-09-08 | 九江诺尔新材料科技有限公司 | Continuous production method and application of antimony pentafluoride |
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