Reactor for synthesizing phosphorus pentachloride

A synthesis reactor, phosphorus pentachloride technology, applied in chemical/physical/physical-chemical nozzle reactors, chemical instruments and methods, phosphorus halides/oxyhalides, etc. High rate, high theoretical and practical value, and the effect of increasing the probability of collision

Inactive Publication Date: 2008-06-11
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

But this method synthesizes phosphorus pentachloride to directly condense on the vessel wall, and the product purity that obtains is lower, about 96%.

Method used

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  • Reactor for synthesizing phosphorus pentachloride

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Embodiment Construction

[0015] The main innovation point of the reactor shown in the figure of the present invention is the combined arrangement of inner and outer sleeve sleeves. Phosphorus pentachloride is synthesized with phosphorus trichloride and chlorine as raw materials, and Cl 2 Chlorine inlet 5 enters the inner sleeve 9 from the bottom of the reactor, PCl 3 The spray port 13 on the top of the reactor is sprayed into the inner sleeve 9 in the form of a mist. After contacting phosphorus trichloride with chlorine gas, it reacts quickly to form phosphorus pentachloride and releases the heat of reaction. Air convection is carried out, and the circulating cooling water is turned on to control the reaction temperature at 110-130° C. Most of the generated solid phosphorus pentachloride condenses on the inner wall of the inner sleeve 9 of the reactor. After the reaction is completed, reduce the flow rate of circulating cooling water in the interlayer 4 and 3 of the inner and outer sleeves to raise th...

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Abstract

The invention discloses a synthetic reactor of phosphorus pentachloride, which is composed of inner and outer cylinders with spraying hole of phsophorus trichloride on the top and chlorine inlet and outlet on the bottom, wherein the rack is supported in the middle of inner cylinder, which possesses cool water sandwich and inlet-to-outlet hole to increase collision frequency and contacting area of reactants.

Description

technical field [0001] The invention relates to a phosphorus pentachloride synthesis reactor, which belongs to the technical field of inorganic chemical synthesis and refining equipment. Background technique [0002] High-purity phosphorus pentachloride is widely used as chlorinating agent, catalyst, dehydrating agent, etc. in organic synthesis, and is characterized by fast reaction and high yield. It is mainly used in the synthesis of pharmaceutical intermediate 7-ACA and the production of lithium hexafluorophosphate (lithium battery). ShrOff et al PCl 3 Vaporize at a certain temperature, and then react with Cl 2 According to a certain proportion of reaction, the generated PCl 5 A crystalline precipitate forms on the wall of the condenser, and the PCl 5 Particles are scraped off the walls of the container and packaged under airtight conditions. The patent number is 93202993.0 "a device for preparing phosphorus pentachloride", which uses corrosion-resistant enamel mater...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/10B01J10/00B01J19/26
Inventor 任清亮魏福祥王金梅
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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