Vertical continuous production equipment for phosphorus pentafluoride

Abstract

The invention discloses vertical continuous production equipment for phosphorus pentafluoride. The equipment comprises a vertical reaction container, the bottom of the vertical reaction container is provided with an air inlet, and the top is provided with an exhaust port, and the side wall of the vertical reaction container below the exhaust port is provided with an atomizing nozzle, the outlet ofwhich faces downward. Based on the existing material handling technological level, the transportation of liquid and gas materials becomes easier, and the control of flow and pressure becomes more precise. Therefore, the equipment provided by the invention adopts liquid yellow phosphorus as the raw material, and can accurately control the feed flow and pressure of liquid yellow phosphorus and fluorine gas, more accurately control the reaction rate of yellow phosphorus and fluorine gas, ensure stable reaction, avoid explosion accident caused by drastic reaction and lower the security risk.

Description

technical field [0001] The invention relates to the field of reactors, in particular to a vertical continuous production device for phosphorus pentafluoride. Background technique [0002] Phosphorus pentafluoride is an important inorganic fluoride, which can be used in the electronics industry, polymer materials and organic synthesis catalysts. At present, there are two main processes for industrialized production of high-purity phosphorus pentafluoride, one is to use phosphorus pentachloride to react with hydrogen fluoride to generate phosphorus pentafluoride and hydrogen chloride, and the other is to use fluorine gas to react with yellow phosphorus , generating phosphorus pentafluoride. [0003] The existing equipment or process for preparing phosphorus pentafluoride by reacting fluorine gas with yellow phosphorus can refer to the invention patent with application number 201210113224.4, or the invention patent with application number 201210557911.5. These existing prepara...

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Problems solved by technology

[0003] The existing equipment or process for preparing phosphorus pentafluoride by reacting fluorine gas with yellow phosphorus can refer to the invention patent with application number 201210113224.4, or the invention patent with application number 201210557911.5. These existing preparation processes or equipment all use solid yellow Phosphorus is used as a raw material, and solid yellow phosphorus is particles with different surface areas. The contact area between yellow phosphorus and fluorine gas fed into the reactor at different times cannot be kept consistent, resulting in large fluctuations in the reaction rate, which is not conducive to stable and accurate control. Reaction rate, because the reaction between yellow phosphorus and fluorine gas will release a large amount of heat, when the reaction rate fluctuates greatly, it is easy to have a reaction out of control and cause an explosion accident, which poses a greater safety risk

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