CN114950301A

CN114950301A - Iodine pentafluoride synthesizer

Info

Publication number: CN114950301A
Application number: CN202210609179.5A
Authority: CN
Inventors: 陈志斌; 马领军; 张龙; 李永琛; 董云龙; 李中佩; 朱书娴; 江晓玲
Original assignee: Peric Special Gases Co Ltd
Current assignee: Peric Special Gases Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-08-30
Anticipated expiration: 2042-05-31
Also published as: CN114950301B

Abstract

The invention provides an iodine pentafluoride synthesis device which comprises a reaction kettle, wherein an iodine inlet is formed in the reaction kettle, a fluorine gas inlet and an iodine pentafluoride outlet are formed in the bottom of the reaction kettle, a transverse screen is obliquely arranged in the reaction kettle, a baffle is vertically and fixedly installed in the reaction kettle, a vertical screen is arranged on the baffle, the reaction kettle is provided with the fluorine gas inlet, the outer side of the reaction kettle is wrapped with a jacket, and circulating water is introduced into the jacket. The device has the advantages of simple and reasonable structural design, scientific and practical performance, simple operation and low cost, and can effectively separate the produced iodine pentafluoride, raw material fluorine gas and iodine simple substance, effectively improve the purity of the product and reduce the output of reaction waste.

Description

Iodine pentafluoride synthesizer

Technical Field

The invention relates to chemical production reaction equipment, in particular to an iodine pentafluoride synthesis device.

Background

Iodine pentafluoride is generally generated by reacting fluorine gas with elemental iodine, and on one hand, the elemental iodine raw material is easy to mix into iodine pentafluoride liquid, so that the purity of the product is reduced; on the other hand, the high temperature generated by the reaction easily volatilizes iodine to generate iodine vapor, which causes pipeline blockage. Therefore, the development of a reaction kettle capable of effectively separating the raw material iodine from the product iodine pentafluoride is extremely important for the production of iodine pentafluoride.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an iodine pentafluoride synthesis device aiming at the defects of the prior art, the device has the advantages of simple and reasonable structure, good use effect, simple operation and low cost, and can effectively separate the produced iodine pentafluoride, raw material fluorine gas and iodine simple substance, effectively improve the purity of products and reduce the production of reaction waste.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides an iodine pentafluoride synthesizer, its characterized in that, includes reation kettle, iodine entry is seted up at reation kettle's top, first fluorine gas entry and iodine pentafluoride export are seted up to the reation kettle bottom, the second fluorine gas entry is seted up to reation kettle's one side, be provided with first screen cloth, second screen cloth and third screen cloth in the reation kettle.

Preferably, first screen cloth fixed mounting is on the baffle, and first screen cloth and the vertical setting of baffle are in reation kettle, second screen cloth and third screen cloth setting are in first screen cloth both sides, and second screen cloth and third screen cloth wholly constitute horizontal screen cloth, and horizontal screen cloth slope sets up in reation kettle. The first screen is arranged on the baffle plate, so that the fluorine gas and the iodine can be contacted to react and are not directly discharged from the iodine pentafluoride outlet.

Preferably, a jacket is fixed outside the reaction kettle in a wrapping manner, and circulating cooling water is introduced into the jacket.

Preferably, the iodine inlet and the first fluorine gas inlet are respectively positioned at the upper side and the lower side of the second screen, the second fluorine gas inlet and the iodine pentafluoride outlet are respectively positioned at the upper side and the lower side of the third screen, and a theta ring or a pall ring is filled in the inner cavity of the reaction kettle above the second screen to ensure that the fluorine gas and the iodine are fully contacted.

Preferably, the mesh number of the second screen is 300-400 meshes, which ensures that iodine can be blocked by fluorine gas, and the iodine pentafluoride liquid has high viscosity and cannot flow along the second screen only through the second screen with the largest mesh number, i.e. the smallest aperture. The mesh number of the third screen is 80-150 meshes, so that the iodine pentafluoride liquid can pass through but iodine simple substance cannot pass through. The mesh number of the first screen is 100-150 meshes, so that the iodine pentafluoride liquid can pass through but the iodine simple substance cannot pass through.

Preferably, the angle of inclination of the transverse screen formed by the second screen and the third screen is 30-35 °, and the second screen is positioned higher than the third screen.

Preferably, the temperature of the circulating water in the jacket is maintained within the range of 60-80 ℃ to ensure that the temperature in the reaction kettle is within a suitable range.

Compared with the prior art, the invention has the following advantages:

1. the invention has the advantages of simple and reasonable structure, reasonable design, full reaction and high reaction rate, effectively reduces the impurity content in the product, can improve the production efficiency of the iodine pentafluoride on the basis of reducing the cost, and can be popularized and used.

2. According to the invention, the iodine elementary substance is filtered twice through the first screen and the third screen, so that the content of iodine in the iodine pentafluoride liquid is reduced when the iodine pentafluoride liquid is discharged, the synthesis and the primary purification are carried out in the same container, the production efficiency is improved, and the cost investment is reduced.

3. According to the invention, the containing space of the iodine elementary substance leaked from the first screen is formed between the first screen and the third screen, and the iodine elementary substance reacts with fluorine gas introduced from the second fluorine gas inlet 5 to generate iodine pentafluoride, so that the impurity content in the product is reduced, and the utilization rate of the iodine elementary substance as a raw material is effectively improved.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the construction of the baffle and first screen in the present invention.

Description of reference numerals:

1-a reaction kettle; 2-an iodine inlet; 3 — a first fluorine inlet;

4-an iodine pentafluoride outlet; 5-a second fluorine gas inlet; 6-a first screen;

7-a second screen; 8-a third screen; 9-a baffle plate;

10-jacket.

Detailed Description

As shown in fig. 1 and 2, the present invention includes a reaction kettle 1, an iodine inlet 2 is provided on the left side of the top of the reaction kettle 1, a first fluorine gas inlet 3 is provided on the left side of the bottom of the reaction kettle 1, an iodine pentafluoride outlet 4 is provided on the right side of the bottom of the reaction kettle 1, a second fluorine gas inlet 5 is provided on the upper portion of the right side wall of the reaction kettle 1, and a first screen 6, a second screen 7 and a third screen 8 are provided in the reaction kettle 1.

In this embodiment, the first screen 6 is fixedly installed on the baffle 9, the first screen 6 and the baffle 9 are vertically arranged at the central position in the reaction kettle 1, the second screen 7 is arranged at the left side of the first screen 8, the third screen 8 is arranged at the right side of the first screen 6, the second screen 7 and the third screen 8 integrally form a transverse screen, and the transverse screen is obliquely arranged in the reaction kettle 1 in a high-right direction. The first screen 6 is arranged on the baffle 9 to ensure that the fluorine gas and the iodine can contact and react and are not directly discharged from the iodine pentafluoride outlet 4.

In this embodiment, a jacket 10 is fixed outside the reaction kettle 1, and circulating cooling water is introduced into the jacket 10.

In this embodiment, the iodine inlet 2 and the first fluorine gas inlet 3 are respectively located at the upper and lower sides of the second sieve 7, the second fluorine gas inlet 5 and the iodine pentafluoride outlet 4 are respectively located at the upper and lower sides of the third sieve 8, and a θ ring or a pall ring is filled in the inner cavity of the reaction kettle 1 above the second sieve 7 to ensure sufficient contact between the fluorine gas and the iodine.

In this embodiment, the mesh number of the second mesh 7 is 350 meshes, so that it is ensured that the iodine and iodine pentafluoride liquid can be blocked by the fluorine gas. The mesh number of the third screen 8 is 140 meshes, so that the iodine pentafluoride liquid can pass through, but the iodine simple substance cannot pass through. The mesh number of the first screen 6 is 110 meshes, so that the iodine pentafluoride liquid can pass through but the iodine simple substance cannot pass through.

In this embodiment, the inclination angle that second screen 7 and third screen 8 are constituteed is 30, and the position of second screen 7 is higher than third screen 8.

In this embodiment, a cavity is provided in the jacket 10, and the cavity is connected to an external cooling water circulation device through a water inlet and a water outlet, so as to maintain the temperature of the circulating water in the jacket 10 within a range of 60 to 80 ℃, and ensure that the temperature in the reaction kettle 1 is within a proper range.

The working process of the invention is as follows:

s1, adding 50kg of iodine elementary substance into a reaction kettle 1 through an iodine inlet 2, introducing fluorine gas into the reaction kettle 1 through a first fluorine gas inlet 3 through a membrane press, wherein the outlet pressure of the membrane press is 0.1Mpa, the fluorine gas rises in the reaction kettle 1 and passes through a second screen 7 to be in contact with the iodine elementary substance for reaction to generate iodine pentafluoride liquid, the iodine pentafluoride liquid flows along the second screen 7 with the smallest aperture to the right side, and part of the iodine elementary substance mixed in the iodine pentafluoride liquid is filtered and intercepted when passing through a first screen 6;

s2, discharging the iodine pentafluoride liquid flowing into the right side of the reaction kettle 1 through a third screen 8 through an iodine pentafluoride outlet 4, and collecting the iodine pentafluoride liquid through a collecting tank, wherein the third screen 8 continuously filters iodine simple substances mixed in the iodine pentafluoride liquid;

s3, when enough iodine elementary substances are filtered and retained on the third screen 8, fluorine gas is introduced into the second fluorine gas inlet 5, the iodine elementary substances on the third screen 8 and the newly introduced fluorine gas are fully reacted to generate iodine pentafluoride, and the generated iodine pentafluoride liquid passes through the third screen 8 and is discharged from the iodine pentafluoride outlet 4.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.

Claims

1. The utility model provides an iodine pentafluoride synthesizer, its characterized in that, includes reation kettle (1), iodine entry (2) are seted up at the top of reation kettle (1), first fluorine gas entry (3) and iodine pentafluoride export (4) are seted up to reation kettle (1) bottom, second fluorine gas entry (5) are seted up to one side of reation kettle (1), be provided with first screen cloth (6), second screen cloth (7) and third screen cloth (8) in reation kettle (1).

2. The iodine pentafluoride synthesizer of claim 1, wherein the first screen (6) is fixedly arranged on the baffle (9), the first screen (6) and the baffle (9) are vertically arranged in the reaction kettle (1), the second screen (7) and the third screen (8) are fixedly arranged on two sides of the first screen (6), the second screen (7) and the third screen (8) integrally form a transverse screen, and the transverse screen is obliquely arranged in the reaction kettle (1).

3. The iodine pentafluoride synthesis device of claim 1, wherein a jacket (10) is fixed outside the reaction kettle (1) in a wrapping manner, and circulating cooling water is introduced into the jacket (10).

4. The iodine pentafluoride synthesis device according to claim 1, wherein the iodine inlet (2) and the first fluorine gas inlet (3) are respectively positioned at the upper side and the lower side of the second screen (7), the second fluorine gas inlet (5) and the iodine pentafluoride outlet (4) are respectively positioned at the upper side and the lower side of the third screen (8), and a theta ring or a pall ring is filled in the inner cavity of the reaction kettle (1) above the second screen (7).