Horizontal type continuous production device for phosphorus pentafluoride

Abstract

The invention discloses a horizontal type continuous production device for phosphorus pentafluoride. The horizontal type continuous production device comprises a horizontal type reaction vessel, wherein a liquid level holding section in certain height is formed in an inner chamber of the horizontal type reaction vessel; the areas of horizontal sections of the liquid level holding section at any altitudes are equal to each other; a liquid feeding channel is arranged under the liquid level holding section; a gas feeding channel is arranged on one end of the horizontal type reaction vessel abovethe liquid level holding section while an exhaust channel is arranged on the other end of the horizontal type reaction vessel. The horizontal type continuous production device for phosphorus pentafluoride is capable of accurately and easily controlling the reaction rate of yellow phosphorus and fluorine, stabilizing the reaction process and reducing the safety risk of explosion caused by ultrahighreaction rate.

Description

technical field [0001] The invention relates to the field of phosphorus pentafluoride preparation equipment, in particular to a horizontal continuous production equipment 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 nu...

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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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