Sampling system of iodine pentafluoride or antimony fluoride

Abstract

The invention discloses a sampling system of iodine pentafluoride or antimony fluoride. The sampling system comprises a liquid storage pot, a nitrogen decompressor, a sampling bottle and a pumping negative pressure device, wherein the upper end of the liquid storage pot is provided with an air inlet / outlet, a material inlet / outlet, an inlet / outlet pipe; one end of the inlet / outlet pipe stretches into the liquid of the liquid storage pot, and the other end of the inlet / outlet pipe is connected with the material inlet / outlet; the nitrogen decompressor comprises a high pressure nitrogen cylinder and a gas dryer, one end of the gas dryer is communicated with an air outlet of the high pressure nitrogen cylinder through a pipeline, the other end of the gas dryer is communicated with the air inlet / outlet arranged on the liquid storage pot through the pipeline, and a bottle port of the sampling bottle is provided with a choke plug, a feeding pipe and an exhaust pipe are inserted on the choke plug, one end of the feeding pipe stretches into the bottom end of the sampling bottle, and the other end of the feeding pipe is communicated with the liquid storage pot through the pipeline; and the pumping negative pressure device comprises a vacuum machine and an air exhaust cover, the air exhaust cover is mutually communicated with a pumping port of the vacuum machine, and the air exhaust cover is positioned on the upper end of the sampling bottle. The sampling system provided by the invention has the advantages that the sampling is safe and reliable, the operation is easy, and the environment is not polluted.

Description

technical field [0001] The invention relates to a sampling system for iodine pentafluoride or antimony pentafluoride. Background technique [0002] 1. Iodine pentafluoride [0003] Properties: Under normal temperature and pressure, it is a corrosive, colorless and toxic liquid with a pungent smell. [0004] Solubility: It can be hydrolyzed quickly in water to generate hydrofluoric acid and iodic acid. [0005] Stability: Iodine pentafluoride has good thermal stability, and it will decompose into iodine and iodine heptafluoride only at a temperature greater than 400°C. Metals such as silver, magnesium, copper, and iron rarely interact with IF5 even if they are in contact for a long time. However, non-metallic sulfur, selenium, tellurium, phosphorus, silicon, arsenic, boron, etc. can react with IF5 to generate corresponding fluorides at room temperature. [0006] The toxicity of iodine pentafluoride is very similar to that of fluorine. Its vapor is very irritating. Inhal...

AI Technical Summary

Problems solved by technology

[0010] Since iodine pentafluoride and antimony pentafluoride are corrosive, colorless, and toxic liquids with pungent odors at normal temperature and pressure, they will release heat when heated or meet water, and emit toxic and corrosive fumes, which are corrosive, so in general sampling , will affect the safety of operators and pollute the environment

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