Process method for purifying iodine pentafluoride

A technology of iodine pentafluoride and process methods, applied in the direction of interhalogen compounds, etc., can solve problems affecting product purity and application fields, and achieve the effects of reducing the content of impurities, convenient operation, and simple equipment

Active Publication Date: 2013-12-18
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the directly prepared crude iodine pentafluoride contains a large amount of impurities, which affects the purity and application field of the p

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] After passing the evaporator seal leak test, evacuate to -0.08MPa, control the pressure inside the evaporator to be lower than the pressure of the iodine pentafluoride raw material bottle, and add 200g of iodine pentafluoride raw material into the evaporator.

[0032] Heating the evaporator, the temperature of the evaporator is 30°C, the light component impurities in iodine pentafluoride such as N 2 , O 2 , HF, etc. are gasified from the top of the evaporator through the gas phase buffer, and then enter the tail gas treatment system for treatment.

[0033] Continue to heat the evaporator and control the temperature of the evaporator to 90°C. The iodine pentafluoride in the evaporator is vaporized and enters the condenser from the top of the evaporator. Control the temperature of the condenser to 60°C, the iodine pentafluoride gas is condensed and liquefied, and enters the product collector.

[0034] When the evaporator temperature is 140°C, stop heating the evapor...

Embodiment 2

[0036] After the evaporator is sealed and tested for leaks, evacuate to -0.09MPa, control the pressure inside the evaporator to be lower than the pressure of the iodine pentafluoride raw material bottle, and add 200g of iodine pentafluoride raw material into the evaporator. Heating the evaporator, the evaporator temperature is 45°C, the light components impurities in iodine pentafluoride such as N 2 , O 2 , HF, etc. are gasified from the top of the evaporator through the gas phase buffer, enter the tail gas treatment system for treatment, and then empty.

[0037] Continue to heat the evaporator and control the temperature of the evaporator to 110°C. The iodine pentafluoride in the evaporator is vaporized and enters the condenser from the top of the evaporator. Control the temperature of the condenser to 70°C, the iodine pentafluoride gas is condensed and liquefied, and enters the product collector.

[0038] When the evaporator temperature is 140°C, stop heating the evapo...

Embodiment 3

[0041] After the device is sealed and tested for leaks, the device is evacuated to -0.10MPa, the pressure in the evaporator is controlled to be lower than the pressure of the iodine pentafluoride raw material bottle, and 200g of iodine pentafluoride raw material is added to the evaporator. Heating the evaporator, the evaporator temperature is 60°C, the light components impurities in iodine pentafluoride such as N 2 , O 2 , HF, etc. are gasified from the top of the evaporator through the gas phase buffer, enter the tail gas treatment system for treatment, and then empty.

[0042] Continue to heat the evaporator and control the temperature of the evaporator to 130°C. The iodine pentafluoride in the evaporator is vaporized and enters the condenser from the top of the evaporator. Control the temperature of the condenser to 80°C, the iodine pentafluoride gas is condensed and liquefied, and enters the product collector.

[0043] When the evaporator temperature is 140°C, stop h...

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PUM

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Abstract

The technical scheme of the invention is to provide a process method for purifying iodine pentafluoride. The process method comprises the following steps of: (i) evacuating an evaporator until the pressure is between -0.08MPa and -0.10MPa; (ii) adding an iodine pentafluoride raw material into the evaporator; (iii) heating the evaporator, and controlling the temperature of the evaporator to be 30-60 DEG C to ensure that light component impurities such as N2, O2, HF and the like in the iodine pentafluoride are gasified and separated out; (iv) controlling the temperature of the evaporator to be 90-130 DEG C to ensure that the iodine pentafluoride in the evaporator is gasified and the gasified iodine pentafluoride enters a condenser, and controlling the temperature of the condenser to be 60-80 DEG C to ensure that the iodine pentafluoride gas is condensed and liquefied; (v) removing deposited substances such as KF, FeF2 and other heavy components in an iodine pentafluoride crude product. The process method provided by the invention is simple in equipment, convenient in operation and safe in equipment running, the content of the impurities in the iodine pentafluoride is effectively reduced, and the product purity reaches more than 99.5%.

Description

technical field [0001] The invention belongs to a process method for purifying iodine pentafluoride, in particular to a process method for removing impurities in iodine pentafluoride by distillation. Background technique [0002] Iodine pentafluoride (IF 5 ) is a general fluorinating agent and strong oxidizing agent, mainly used in the field of organic synthesis. Due to its excellent and unique properties such as high surface activity, high heat resistance stability, high chemical stability and water and oil repellency, iodine pentafluoride can be used as a raw material for the synthesis of fluorine-containing surfactants and fluorine-containing fabric finishing agents. At the same time, due to the specific biological activity and biological adaptability of fluorine-containing organic compounds, iodine pentafluoride is also used in the field of medicine. [0003] At present, the directly prepared crude iodine pentafluoride contains a large amount of impurities, which affec...

Claims

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Application Information

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IPC IPC(8): C01B7/24
Inventor 崔学文郝树海张春芳刘春雪刘永生
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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